start-ver=1.4
cd-journal=joma
no-vol=19
cd-vols=
no-issue=1
article-no=
start-page=36
end-page=43
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2025
dt-pub=2025
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Evaluation of the temporal behavior of fulvic acid iron in Asahi River, Okayama, Japan
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Iron is essential for biogeochemical processes in aquatic ecosystems, but its riverine concentration can be affected by environmental conditions. This study assessed weekly fulvic acid iron (FAFe) concentration at a single sampling site in Asahi River from 2022?2023 to explore the differences in the temporal scales. The objectives of this study were to evaluate the effects of physicochemical properties of the river on the concentration of FAFe, analyze the concentration of FAFe in spring, summer, autumn and winter, and assess the relationship between FAFe concentration and land use types of the watershed. The results indicated that physicochemical parameters, such as pH and surface water temperature (SWT) seemed to influence FAFe concentration (p < 0.05). Hydrological dynamics influenced FAFe concentration and transport, revealing an increasing trend during spring (p < 0.001) and summer (p = 0.05), with non-significant trends during autumn and winter (p > 0.05). FAFe exhibited a strong positive correlation with total organic carbon (TOC) (p < 0.001). Upland fields significantly influenced FAFe concentration (p < 0.01) through runoff with abundant NO3? and PO43? into the river. Thus, FAFe concentration in Asahi River was influenced by pH, SWT, TOC, hydrological regime, and agricultural runoff.
en-copyright=
kn-copyright=

en-aut-name=YengehRohdof Lactem
en-aut-sei=Yengeh
en-aut-mei=Rohdof Lactem
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=SomuraHiroaki
en-aut-sei=Somura
en-aut-mei=Hiroaki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=MoroizumiToshitsugu
en-aut-sei=Moroizumi
en-aut-mei=Toshitsugu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=MoriYasushi
en-aut-sei=Mori
en-aut-mei=Yasushi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=MaedaMorihiro
en-aut-sei=Maeda
en-aut-mei=Morihiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=4
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=5
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
en-keyword=dissolved iron
kn-keyword=dissolved iron
en-keyword=seasonal variation
kn-keyword=seasonal variation
en-keyword=dissolved organic matter
kn-keyword=dissolved organic matter
en-keyword=fulvic acid iron
kn-keyword=fulvic acid iron
END

start-ver=1.4
cd-journal=joma
no-vol=14
cd-vols=
no-issue=2
article-no=
start-page=217
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2025
dt-pub=20250121
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Interchangeability of Cross-Platform Orthophotographic and LiDAR Data in DeepLabV3+-Based Land Cover Classification Method
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Riverine environmental information includes important data to collect, and the data collection still requires personnel's field surveys. These on-site tasks still face significant limitations (i.e., hard or danger to entry). In recent years, as one of the efficient approaches for data collection, air-vehicle-based Light Detection and Ranging technologies have already been applied in global environmental research, i.e., land cover classification (LCC) or environmental monitoring. For this study, the authors specifically focused on seven types of LCC (i.e., bamboo, tree, grass, bare ground, water, road, and clutter) that can be parameterized for flood simulation. A validated airborne LiDAR bathymetry system (ALB) and a UAV-borne green LiDAR System (GLS) were applied in this study for cross-platform analysis of LCC. Furthermore, LiDAR data were visualized using high-contrast color scales to improve the accuracy of land cover classification methods through image fusion techniques. If high-resolution aerial imagery is available, then it must be downscaled to match the resolution of low-resolution point clouds. Cross-platform data interchangeability was assessed by comparing the interchangeability, which measures the absolute difference in overall accuracy (OA) or macro-F1 by comparing the cross-platform interchangeability. It is noteworthy that relying solely on aerial photographs is inadequate for achieving precise labeling, particularly under limited sunlight conditions that can lead to misclassification. In such cases, LiDAR plays a crucial role in facilitating target recognition. All the approaches (i.e., low-resolution digital imagery, LiDAR-derived imagery and image fusion) present results of over 0.65 OA and of around 0.6 macro-F1. The authors found that the vegetation (bamboo, tree, grass) and road species have comparatively better performance compared with clutter and bare ground species. Given the stated conditions, differences in the species derived from different years (ALB from year 2017 and GLS from year 2020) are the main reason. Because the identification of clutter species includes all the items except for the relative species in this research, RGB-based features of the clutter species cannot be substituted easily because of the 3-year gap compared with other species. Derived from on-site reconstruction, the bare ground species also has a further color change between ALB and GLS that leads to decreased interchangeability. In the case of individual species, without considering seasons and platforms, image fusion can classify bamboo and trees with higher F1 scores compared to low-resolution digital imagery and LiDAR-derived imagery, which has especially proved the cross-platform interchangeability in the high vegetation types. In recent years, high-resolution photography (UAV), high-precision LiDAR measurement (ALB, GLS), and satellite imagery have been used. LiDAR measurement equipment is expensive, and measurement opportunities are limited. Based on this, it would be desirable if ALB and GLS could be continuously classified by Artificial Intelligence, and in this study, the authors investigated such data interchangeability. A unique and crucial aspect of this study is exploring the interchangeability of land cover classification models across different LiDAR platforms.
en-copyright=
kn-copyright=

en-aut-name=PanShijun
en-aut-sei=Pan
en-aut-mei=Shijun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=YoshidaKeisuke
en-aut-sei=Yoshida
en-aut-mei=Keisuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=NishiyamaSatoshi
en-aut-sei=Nishiyama
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=KojimaTakashi
en-aut-sei=Kojima
en-aut-mei=Takashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=HashimotoYutaro
en-aut-sei=Hashimoto
en-aut-mei=Yutaro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=4
en-affil=TOKEN C. E. E. Consultants Co., Ltd.
kn-affil=

affil-num=5
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
en-keyword=airborne LiDAR bathymetry
kn-keyword=airborne LiDAR bathymetry
en-keyword=cross-platform
kn-keyword=cross-platform
en-keyword=deep learning
kn-keyword=deep learning
en-keyword=green LiDAR system
kn-keyword=green LiDAR system
en-keyword=riverine land cover classification
kn-keyword=riverine land cover classification
END

start-ver=1.4
cd-journal=joma
no-vol=60
cd-vols=
no-issue=
article-no=
start-page=104813
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=202412
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Petrological characterization for material provenance of haniwa earthenware from mounded tombs in the Kibi region, Japan
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=To determine the provenance of the materials used in the production of haniwa earthenware unearthed from mounded tombs (kofun) in the Kibi region (modern Okayama Prefecture) during the Kofun period (late 3rd ? 6th century CE) of Japan, we carried out petrological analyses of haniwa sherds, including optical microscopy, X-ray diffractometry, X-ray fluorescence spectroscopy, and electron-probe analysis. The 25 haniwa sherds analyzed from 12 representative mounded tombs are composed of mineral and rock inclusions with variable grain size set in a clay matrix. The dominant inclusions are quartz, K-feldspar, and plagioclase, associated with minor amounts of amphibole, volcanic glass, and granitic rocks in all the haniwa sherds, and small amounts of hornfels, quartz rock, and accessory minerals, including mica, ilmenite, and chromite, in some of the sherds. Amphibole and plagioclase have compositional variations indicative of the mixing of tephra and granitic components. The compositions of volcanic glass inclusions are similar to those of the Aira-Tanzawa and Kikai-Akahoya tephras widely distributed in southwestern Japan. Bulk chemical compositions show magmatic differentiation trends, which are variable between individual tombs. From these results, it is concluded that the paste materials of haniwa in the Kibi region were commonly derived from weathered granitic rocks mixed with minor amounts of three widespread tephras. The variations of chemical and mineralogical compositions are probably the reflection of local geologic settings, suggesting the presence of specific mining sites of paste materials around each tomb. The mining sites could be located at the bases of hills of granitic rocks covered by widespread tephras and in some cases, near the flood plain of big river systems.
en-copyright=
kn-copyright=

en-aut-name=NozakaToshio
en-aut-sei=Nozaka
en-aut-mei=Toshio
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OhbayashiNaoya
en-aut-sei=Ohbayashi
en-aut-mei=Naoya
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=TodaYuki
en-aut-sei=Toda
en-aut-mei=Yuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=SugiuraKanako
en-aut-sei=Sugiura
en-aut-mei=Kanako
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=NozakiTakahiro
en-aut-sei=Nozaki
en-aut-mei=Takahiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=KimuraOsamu
en-aut-sei=Kimura
en-aut-mei=Osamu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=MatsumotoNaoko
en-aut-sei=Matsumoto
en-aut-mei=Naoko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=SeikeAkira
en-aut-sei=Seike
en-aut-mei=Akira
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

affil-num=1
en-affil=Department of Earth Sciences, Okayama University
kn-affil=

affil-num=2
en-affil=Department of Earth Sciences, Okayama University
kn-affil=

affil-num=3
en-affil=Department of Earth Sciences, Okayama University
kn-affil=

affil-num=4
en-affil=Department of Archaeology, Okayama University
kn-affil=

affil-num=5
en-affil=Research Institute for the Dynamics of Civilizations, Okayama University
kn-affil=

affil-num=6
en-affil=Research Institute for the Dynamics of Civilizations, Okayama University
kn-affil=

affil-num=7
en-affil=Research Institute for the Dynamics of Civilizations, Okayama University
kn-affil=

affil-num=8
en-affil=Department of Archaeology, Okayama University
kn-affil=
en-keyword=Haniwa
kn-keyword=Haniwa
en-keyword=Paste material
kn-keyword=Paste material
en-keyword=Provenance
kn-keyword=Provenance
en-keyword=Kofun
kn-keyword=Kofun
en-keyword=Kibi
kn-keyword=Kibi
en-keyword=Japan
kn-keyword=Japan
END

start-ver=1.4
cd-journal=joma
no-vol=18
cd-vols=
no-issue=4
article-no=
start-page=87
end-page=94
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=2024
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Evaluation and selection of a set of CMIP6 GCMs for water resource modeling in the poorly gauged complex terrain of the Tana River basin in Kenya
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The Tana River basin is among the least monitored in terms of meteorological data in Kenya. The Kenya Meteorological Department (KMD) provided data on a ten-day timescale, which is not adequate for water resource evaluation. To bridge this data gap, there is a growing need to leverage General Circulation Models (GCMs) and global datasets to assess current and future water resources in this basin. This study focused on evaluating the performance of 19 CMIP6 GCMs concerning precipitation (pr), maximum temperature (tasmax), and minimum temperature (tasmin) for the complex terrain of the Tana River basin. This involved a rigorous process of disaggregating the data provided by the KMD into a daily timescale for downscaling. The GCMs’ historical output was prepared using the Climate Data Operator (CDO) in Cygwin. The Kling Gupta Efficiency (KGE) was computed for each variable at three stations: Nyeri (upstream), Kitui (midstream), and Bura (downstream). The KGE results were validated using Taylor statistics. Five GCMs, CMCC-ESM2, MPI-ESM1-2-HR, ACCESS-CM2, NorESM2-MM, and GFDL-ESM4, performed best with a multivariable Multi-station KGE statistic of 0.455?0.511. The outputs from these selected GCMs were subsequently downscaled for later use in assessing the water resources and crop water demand in the basin.
en-copyright=
kn-copyright=

en-aut-name=Mwendwa WambuaDaniel
en-aut-sei=Mwendwa Wambua
en-aut-mei=Daniel
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=SomuraHiroaki
en-aut-sei=Somura
en-aut-mei=Hiroaki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=MoroizumiToshitsugu
en-aut-sei=Moroizumi
en-aut-mei=Toshitsugu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
en-keyword=climate change
kn-keyword=climate change
en-keyword=adaptation
kn-keyword=adaptation
en-keyword=scenarios
kn-keyword=scenarios
en-keyword=downscaling
kn-keyword=downscaling
en-keyword=disaggregation
kn-keyword=disaggregation
en-keyword=temporal
kn-keyword=temporal
END

start-ver=1.4
cd-journal=joma
no-vol=8
cd-vols=
no-issue=9
article-no=
start-page=471
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=20240909
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Generating 3D Models for UAV-Based Detection of Riparian PET Plastic Bottle Waste: Integrating Local Social Media and InstantMesh
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In recent years, waste pollution has become a severe threat to riparian environments worldwide. Along with the advancement of deep learning (DL) algorithms (i.e., object detection models), related techniques have become useful for practical applications. This work attempts to develop a data generation approach to generate datasets for small target recognition, especially for recognition in remote sensing images. A relevant point is that similarity between data used for model training and data used for testing is crucially important for object detection model performance. Therefore, obtaining training data with high similarity to the monitored objects is a key objective of this study. Currently, Artificial Intelligence Generated Content (AIGC), such as single target objects generated by Luma AI, is a promising data source for DL-based object detection models. However, most of the training data supporting the generated results are not from Japan. Consequently, the generated data are less similar to monitored objects in Japan, having, for example, different label colors, shapes, and designs. For this study, the authors developed a data generation approach by combining social media (Clean-Up Okayama) and single-image-based 3D model generation algorithms (e.g., InstantMesh) to provide a reliable reference for future generations of localized data. The trained YOLOv8 model in this research, obtained from the S2PS (Similar to Practical Situation) AIGC dataset, produced encouraging results (high F1 scores, approximately 0.9) in scenario-controlled UAV-based riparian PET bottle waste identification tasks. The results of this study show the potential of AIGC to supplement or replace real-world data collection and reduce the on-site work load.
en-copyright=
kn-copyright=

en-aut-name=PanShijun
en-aut-sei=Pan
en-aut-mei=Shijun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=YoshidaKeisuke
en-aut-sei=Yoshida
en-aut-mei=Keisuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=ShimoeDaichi
en-aut-sei=Shimoe
en-aut-mei=Daichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=KojimaTakashi
en-aut-sei=Kojima
en-aut-mei=Takashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=NishiyamaSatoshi
en-aut-sei=Nishiyama
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=4
en-affil=TOKEN C.E.E. Consultants Co., Ltd.
kn-affil=

affil-num=5
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
en-keyword=generative artificial intelligence
kn-keyword=generative artificial intelligence
en-keyword=InstantMesh
kn-keyword=InstantMesh
en-keyword=riparian waste
kn-keyword=riparian waste
en-keyword=SNS
kn-keyword=SNS
en-keyword=3D model
kn-keyword=3D model
END

start-ver=1.4
cd-journal=joma
no-vol=15
cd-vols=
no-issue=1
article-no=
start-page=4535
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=20240528
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Structure and distinct supramolecular organization of a PSII-ACPII dimer from a cryptophyte alga Chroomonas placoidea
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Cryptophyte algae are an evolutionarily distinct and ecologically important group of photosynthetic unicellular eukaryotes. Photosystem II (PSII) of cryptophyte algae associates with alloxanthin chlorophyll a/c-binding proteins (ACPs) to act as the peripheral light-harvesting system, whose supramolecular organization is unknown. Here, we purify the PSII-ACPII supercomplex from a cryptophyte alga Chroomonas placoidea (C. placoidea), and analyze its structure at a resolution of 2.47 & Aring; using cryo-electron microscopy. This structure reveals a dimeric organization of PSII-ACPII containing two PSII core monomers flanked by six symmetrically arranged ACPII subunits. The PSII core is conserved whereas the organization of ACPII subunits exhibits a distinct pattern, different from those observed so far in PSII of other algae and higher plants. Furthermore, we find a Chl a-binding antenna subunit, CCPII-S, which mediates interaction of ACPII with the PSII core. These results provide a structural basis for the assembly of antennas within the supercomplex and possible excitation energy transfer pathways in cryptophyte algal PSII, shedding light on the diversity of supramolecular organization of photosynthetic machinery.
en-copyright=
kn-copyright=

en-aut-name=MaoZhiyuan
en-aut-sei=Mao
en-aut-mei=Zhiyuan
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=LiXingyue
en-aut-sei=Li
en-aut-mei=Xingyue
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=LiZhenhua
en-aut-sei=Li
en-aut-mei=Zhenhua
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=ShenLiangliang
en-aut-sei=Shen
en-aut-mei=Liangliang
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=LiXiaoyi
en-aut-sei=Li
en-aut-mei=Xiaoyi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=YangYanyan
en-aut-sei=Yang
en-aut-mei=Yanyan
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=WangWenda
en-aut-sei=Wang
en-aut-mei=Wenda
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=KuangTingyun
en-aut-sei=Kuang
en-aut-mei=Tingyun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

en-aut-name=ShenJian-Ren
en-aut-sei=Shen
en-aut-mei=Jian-Ren
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=

en-aut-name=HanGuangye
en-aut-sei=Han
en-aut-mei=Guangye
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=

affil-num=1
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=2
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=3
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=4
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=5
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=6
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=7
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=8
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=9
en-affil=Institute for Interdisciplinary Science, and Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=10
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=5
article-no=
start-page=877
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=20240427
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Isolation of Vibrio cholerae and Vibrio vulnificus from Estuarine Waters, and Genotyping of V. vulnificus Isolates Using Loop-Mediated Isothermal Amplification
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Bacteria in the genus Vibrio are ubiquitous in estuarine and coastal waters. Some species (including Vibrio cholerae and Vibrio vulnificus) are known human pathogens causing ailments like cholera, diarrhea, or septicemia. Notably, V. vulnificus can also cause a severe systemic infection (known as vibriosis) in eels raised in aquaculture facilities. Water samples were periodically collected from the estuary of the Asahi River, located in the southern part of Okayama City, Japan. These samples were directly plated onto CHROMagar Vibrio plates, and colonies displaying turquoise-blue coloration were selected. Thereafter, polymerase chain reaction was used to identify V. cholerae and V. vulnificus. A total of 30 V. cholerae strains and 194 V. vulnificus strains were isolated during the warm season when the water temperature (WT) was higher than 20 degrees C. Concurrently, an increase in coliforms was observed during this period. Notably, V. vulnificus has two genotypes, designated as genotype 1 and genotype 2. Genotype 1 is pathogenic to humans, while genotype 2 is pathogenic to both humans and eels. The loop-mediated isothermal amplification method was developed to rapidly determine genotypes at a low cost. Of the 194 strains isolated, 80 (41.2%) were identified as genotype 1 strains. Among the 41 strains isolated when the WTs were higher than 28 degrees C, 25 strains (61.0%) belonged to genotype 1. In contrast, of the 32 strains isolated when the WTs were lower than 24 degrees C, 27 strains (84.4%) belonged to genotype 2. These results suggest that the distribution of the two genotypes was influenced by WT.
en-copyright=
kn-copyright=

en-aut-name=MiyoshiShin-Ichi
en-aut-sei=Miyoshi
en-aut-mei=Shin-Ichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=KurataMegumi
en-aut-sei=Kurata
en-aut-mei=Megumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=HiroseRiho
en-aut-sei=Hirose
en-aut-mei=Riho
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=YoshikawaMasaya
en-aut-sei=Yoshikawa
en-aut-mei=Masaya
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=LiangYong
en-aut-sei=Liang
en-aut-mei=Yong
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=YamagishiYosuke
en-aut-sei=Yamagishi
en-aut-mei=Yosuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=MizunoTamaki
en-aut-sei=Mizuno
en-aut-mei=Tamaki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

affil-num=1
en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=3
en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=4
en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=5
en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=6
en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=7
en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
en-keyword=Vibrio cholerae
kn-keyword=Vibrio cholerae
en-keyword=Vibrio vulnificus
kn-keyword=Vibrio vulnificus
en-keyword=genotype
kn-keyword=genotype
en-keyword=LAMP
kn-keyword=LAMP
en-keyword=water temperature
kn-keyword=water temperature
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=20240325
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=包括型洪水氾濫解析を用いた防災・減災に向けた数値解析技術の開発と現地適用
kn-title=Development of numerical technique and field application using integrated simulation of river flooding and inundation for disaster prevention and mitigation
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=HUAWEIJIAN
en-aut-sei=HUA
en-aut-mei=WEIJIAN
kn-aut-name=華威鑒
kn-aut-sei=華
kn-aut-mei=威鑒
aut-affil-num=1
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=岡山大学大学院環境生命科学研究科
END

start-ver=1.4
cd-journal=joma
no-vol=78
cd-vols=
no-issue=2
article-no=
start-page=163
end-page=170
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=202404
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=The Impact of Light Touch and Pin Prick on Functional Outcomes in Patients with Traumatic Spinal Cord Injury
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A spinal cord injury (SCI) can cause severe lifelong functional disability and profoundly affect an individual’s daily life. We investigated the prediction of patients’ post-SCI functional outcomes by evaluating sensory scores rather than motor scores, as the latter’s association with functional outcomes is well established. We examined patients’ responses to a light touch (LT) and pin prick (PP) at admission and the response data’s usefulness as predictors of functional outcomes (i.e., ability to perform activities of daily living) at discharge. This exploratory observational study used data from the Japanese National Spinal Cord Injury Database (SCI-J). Data from 3,676 patients who met the inclusion criteria and were admitted for an SCI between 1997 and 2020 were analyzed. The motor score of the Functional Independence Measure (mFIM) at discharge was used as an index of functional outcome. A multiple regression analysis revealed that the mFIM was associated with both the LT response (β=0.07 (0.01), p<0.001) and the PP response (β=0.07 (0.01), p<0.001) at admission. The false discovery rate log-worth values for LT and PP were 6.6 and 8.5, respectively. Our findings demonstrate that LT and PP scores at admission can help predict patients’ functional outcomes after an SCI, although the magnitude of their contributions is not high.
en-copyright=
kn-copyright=

en-aut-name=DeguchiTakayuki
en-aut-sei=Deguchi
en-aut-mei=Takayuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=KandaKanae
en-aut-sei=Kanda
en-aut-mei=Kanae
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=FurusawaKazunari
en-aut-sei=Furusawa
en-aut-mei=Kazunari
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=Nlandu Roger Ngatu
en-aut-sei=Nlandu Roger Ngatu
en-aut-mei=
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=HiraoTomohiro
en-aut-sei=Hirao
en-aut-mei=Tomohiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=Department of Rehabilitation, Kagawa Rosai Hospital
kn-affil=

affil-num=2
en-affil=Department of Public Health, Faculty of Medicine, Kagawa University
kn-affil=

affil-num=3
en-affil=Department of Rehabilitation Medicine, Kibikogen Rehabilitation Center for Employment Injuries
kn-affil=

affil-num=4
en-affil=Department of Public Health, Faculty of Medicine, Kagawa University
kn-affil=

affil-num=5
en-affil=Department of Public Health, Faculty of Medicine, Kagawa University
kn-affil=
en-keyword=functional independence measure
kn-keyword=functional independence measure
en-keyword=light touch
kn-keyword=light touch
en-keyword=pin prick
kn-keyword=pin prick
en-keyword=spinal cord injury
kn-keyword=spinal cord injury
en-keyword=Japanese National Spinal Cord Injury Database
kn-keyword=Japanese National Spinal Cord Injury Database
END

start-ver=1.4
cd-journal=joma
no-vol=14
cd-vols=
no-issue=1
article-no=
start-page=8164
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20231209
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Structural insights into photosystem II supercomplex and trimeric FCP antennae of a centric diatom Cyclotella meneghiniana
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Diatoms are dominant marine algae and contribute around a quarter of global primary productivity, the success of which is largely attributed to their photosynthetic capacity aided by specific fucoxanthin chlorophyll-binding proteins (FCPs) to enhance the blue-green light absorption under water. We purified a photosystem II (PSII)-FCPII supercomplex and a trimeric FCP from Cyclotella meneghiniana (Cm) and solved their structures by cryo-electron microscopy (cryo-EM). The structures reveal detailed organizations of monomeric, dimeric and trimeric FCP antennae, as well as distinct assemblies of Lhcx6_1 and dimeric FCPII-H in PSII core. Each Cm-PSII-FCPII monomer contains an Lhcx6_1, an FCP heterodimer and other three FCP monomers, which form an efficient pigment network for harvesting energy. More diadinoxanthins and diatoxanthins are found in FCPs, which may function to quench excess energy. The trimeric FCP contains more chlorophylls c and fucoxanthins. These diversified FCPs and PSII-FCPII provide a structural basis for efficient light energy harvesting, transfer, and dissipation in C. meneghiniana.
en-copyright=
kn-copyright=

en-aut-name=ZhaoSonghao
en-aut-sei=Zhao
en-aut-mei=Songhao
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=ShenLili
en-aut-sei=Shen
en-aut-mei=Lili
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=LiXiaoyi
en-aut-sei=Li
en-aut-mei=Xiaoyi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=TaoQiushuang
en-aut-sei=Tao
en-aut-mei=Qiushuang
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=LiZhenhua
en-aut-sei=Li
en-aut-mei=Zhenhua
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=XuCaizhe
en-aut-sei=Xu
en-aut-mei=Caizhe
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=ZhouCuicui
en-aut-sei=Zhou
en-aut-mei=Cuicui
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=YangYanyan
en-aut-sei=Yang
en-aut-mei=Yanyan
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

en-aut-name=SangMin
en-aut-sei=Sang
en-aut-mei=Min
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=

en-aut-name=HanGuangye
en-aut-sei=Han
en-aut-mei=Guangye
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=

en-aut-name=YuLong-Jiang
en-aut-sei=Yu
en-aut-mei=Long-Jiang
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=11
ORCID=

en-aut-name=KuangTingyun
en-aut-sei=Kuang
en-aut-mei=Tingyun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=12
ORCID=

en-aut-name=ShenJian-Ren
en-aut-sei=Shen
en-aut-mei=Jian-Ren
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=13
ORCID=

en-aut-name=WangWenda
en-aut-sei=Wang
en-aut-mei=Wenda
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=14
ORCID=

affil-num=1
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=2
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=3
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=4
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=5
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=6
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=7
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=8
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=9
en-affil=China National Botanical Garden
kn-affil=

affil-num=10
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=11
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=12
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=

affil-num=13
en-affil=Research Institute for Interdisciplinary Science, Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=14
en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=3
cd-vols=
no-issue=
article-no=
start-page=67
end-page=78
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=20240325
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Disaster information and documentation in the Meiji period
kn-title=明治期の災害情報と記録化―遠藤允信の情報活動とその背景―
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=This paper focuses on the recording and transmission of disaster information, and examines the accumulation of disaster information, its trends, and the intentions behind its accumulation through a survey of information records accumulated by individuals during the Meiji period. End? Sanenobu, the subject of this paper, was active mainly in Kyoto during the Meiji period (1868-1912), and in the course of his activities, he accumulated a vast amount of information records called the Seizan Manroku (静山漫録), including records of his investigations of ancient documents handed down in various places and verification records of folk tales and customs passed down in various places. In the course of accumulating such information, he became increasingly interested in disaster information after the Yodogawa river flood in Osaka in 1885, and eventually began to compile a series of Suiin Hikkai（酔蚓筆芥）on disaster information as his main theme. The series of information activities by Sanenobu were also supported by the development and diffusion of information media during that period. At the same time, the fact that Sanenobu paid attention to disaster information among various types of information suggests that he regarded disasters as an important turning point in his understanding of national and social changes. Through this information, the reality of people's social perceptions formed by the media will be revealed.
en-copyright=
kn-copyright=

en-aut-name=AMANOMasashi
en-aut-sei=AMANO
en-aut-mei=Masashi
kn-aut-name=天野真志
kn-aut-sei=天野
kn-aut-mei=真志
aut-affil-num=1
ORCID=

affil-num=1
en-affil=National Museum of Japanese History
kn-affil=
en-keyword=the Yodogawa river
kn-keyword=the Yodogawa river
en-keyword=disaster information
kn-keyword=disaster information
en-keyword=information gathering
kn-keyword=information gathering
en-keyword=historical awareness
kn-keyword=historical awareness
END

start-ver=1.4
cd-journal=joma
no-vol=3
cd-vols=
no-issue=
article-no=
start-page=60
end-page=66
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=20240325
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=The formation of sandbanks and regional transformation in the Late Medieval period
kn-title=中洲の形成と中世後期の地域変容
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The purpose of this paper is to clarify how a harbor city established in a sandbank inlet transformed a local area. In the Later Medieval period, the harbor city of Nakamura was established in the lower part of the Chikusa river. In the late 15th century, the Ei?ji temple of J?do Shinsh? Buddhism was constructed in the harbor city of Nakamura. Nakamura used Sagoshinosh? as a local name. In the 16th century, the harbor city of Kariya on the west coast of the Chikusa river also used the local name of Sagoshinosh?. In the early modern period, villages to the west of the mouth of the Chikusa river came to use the local name of Sagoshinosh?. While the local name of the west coastal area of the Chikusa river mouth had been Ak?nosh?, it changed to Sagoshinosh?. Areas where local names may have changed also include Shikatanosh? and Mikuriyanosh? elsewhere in the Later Medieval period.
en-copyright=
kn-copyright=

en-aut-name=YATAToshifumi
en-aut-sei=YATA
en-aut-mei=Toshifumi
kn-aut-name=矢田俊文
kn-aut-sei=矢田
kn-aut-mei=俊文
aut-affil-num=1
ORCID=

affil-num=1
en-affil=Niigata University, Humanities and Social Sciences
kn-affil=
en-keyword=sandbank
kn-keyword=sandbank
en-keyword=the Chikusa river
kn-keyword=the Chikusa river
en-keyword=harbor city
kn-keyword=harbor city
en-keyword=temple of J?do Shinsh? Buddhism
kn-keyword=temple of J?do Shinsh? Buddhism
en-keyword=local names
kn-keyword=local names
END

start-ver=1.4
cd-journal=joma
no-vol=77
cd-vols=
no-issue=3
article-no=
start-page=263
end-page=272
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=202306
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Early Fluid Balance Is Associated with 90-Day Mortality in Patients Receiving Continuous Renal Replacement Therapy
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Continuous renal replacement therapy (CRRT) is widely used to control fluid balance, but the optimal fluid balance to improve the prognosis of patients remains debated. Appropriate fluid management may depend on hemodynamic status. We investigated the association between 90-day mortality and fluid balance/mean arterial pressure (MAP) in patients receiving CRRT. This single-center retrospective study was conducted between May 2018 and March 2021. Based on the cumulative fluid balance at 72 h after initiation of CRRT, the cases were divided into negative (< 0 mL) and positive (> 0 mL) fluid balance groups. Ninety-day mortality was higher in the positive fluid balance group (p=0.009). At 4 h before and after CRRT initiation, the mean MAP was lower in the positive fluid balance group (p<0.05). After multivariate cox adjustment, 72-h positive fluid balance was independently associated with 90-day mortality (p=0.004). In addition, the cumulative fluid balance was associated with 90-day mortality (p<0.05) in cases without shock, high APACHE II score, sepsis, dialysis dependence, or vasopressor use. A 72-h positive fluid balance was associated with 90-day mortality in patients receiving CRRT.
en-copyright=
kn-copyright=

en-aut-name=GuoYusheng
en-aut-sei=Guo
en-aut-mei=Yusheng
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=KosakaJunko
en-aut-sei=Kosaka
en-aut-mei=Junko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=MorimatsuHiroshi
en-aut-sei=Morimatsu
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

affil-num=1
en-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=

affil-num=2
en-affil=Department of Anesthesiology and Resuscitology, Okayama University Hospital
kn-affil=

affil-num=3
en-affil=Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
en-keyword=fluid management
kn-keyword=fluid management
en-keyword=continuous renal replacement therapy
kn-keyword=continuous renal replacement therapy
en-keyword=mortality
kn-keyword=mortality
en-keyword=mean arterial pressure
kn-keyword=mean arterial pressure
en-keyword=daily cumulative fluid balance
kn-keyword=daily cumulative fluid balance
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20220922
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=ベトナム中部高原セサン川上流域の水資源に対する干ばつ，土地利用政策，人為的活動の影響評価
kn-title=The impacts of droughts, local land-use policies, and anthropogenic activities against water resources in the upstream Sesan river basin, Central Highlands of Vietnam
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=VO NGOC QUYNH TRAM
en-aut-sei=VO NGOC QUYNH TRAM
en-aut-mei=
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=岡山大学大学院環境生命科学研究科
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20220922
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=航空レーザー測深を用いた水環境特性のリモートセンシング技術の開発と河川実務のための水理モデリングへの応用
kn-title=Development of remote sensing of hydro-environmental attributes using airborne topo-bathymetric LiDAR and their application to hydraulic modeling for river management tasks
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=MD. TOUHIDUL ISLAM
en-aut-sei=MD. TOUHIDUL ISLAM
en-aut-mei=
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=岡山大学大学院環境生命科学研究科
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20220922
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=吉井川及び旭川の汽水域における干潟造成に向けた物理環境特性の検討
kn-title=Investigation of the physical environmental characteristics for tidal flat creation in brackish water areas of the Yoshii river and the Asahi river
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=AL-BAGHDADI Mohammed Baqer Naji
en-aut-sei=AL-BAGHDADI Mohammed Baqer Naji
en-aut-mei=
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=岡山大学大学院環境生命科学研究科
END

start-ver=1.4
cd-journal=joma
no-vol=44
cd-vols=
no-issue=
article-no=
start-page=101225
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=202212
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Effects of local land-use policies and anthropogenic activities on water quality in the upstream Sesan River Basin, Vietnam
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Study region: This study focuses on the upstream Sesan River Basin in the Central Highlands of Vietnam. Study focus: Local land-use policies and human activities can significantly affect hydrology and increase the magnitude of erosion and nutrients in downstream areas. The effects in terrestrial regions on water quality of the target area were evaluated during the 2000-2018 period using the SWAT (Soil and Water Assessment Tool) with updated land-use conditions following the local policy decisions and agricultural practices in different periods. New hydrological insights for the regions: This study indicates that the implementation of the local land-use policies, along with extensive anthropogenic activities, has had significant effects on the downstream aquatic environment as compared with the period before the implementation of the land-use policies. Higher annual sediment, total nitrogen (TN), and total phosphorus (TP) load-ings were found upstream from the Poko Watershed, where range land predominated, and in southern and southwestern Dakbla Watershed, where arable land and permanent cropland pre-dominated. Arable land had the highest proportion of sediment and nutrient loadings into the reach, especially in the 2005-2009 period (conducting afforestation, agricultural expansion, and urbanization) and in the 2010-2014 period (applying crop conversion policy involving a shift from mixed forests to rubber forests). Understanding the watershed characteristics along with the combination of spatial land use, local land-use policies, and agricultural practices will support the implementation of regional land use and water resources management strategies more comprehensively.
en-copyright=
kn-copyright=

en-aut-name=TramVo Ngoc Quynh
en-aut-sei=Tram
en-aut-mei=Vo Ngoc Quynh
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=SomuraHiroaki
en-aut-sei=Somura
en-aut-mei=Hiroaki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=MoroizumiToshitsugu
en-aut-sei=Moroizumi
en-aut-mei=Toshitsugu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=MaedaMorihiro
en-aut-sei=Maeda
en-aut-mei=Morihiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=4
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
en-keyword=Land-use policies
kn-keyword=Land-use policies
en-keyword=Land-use changes
kn-keyword=Land-use changes
en-keyword=Agricultural practices
kn-keyword=Agricultural practices
en-keyword=Water resources management
kn-keyword=Water resources management
en-keyword=Hilly areas
kn-keyword=Hilly areas
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20220101
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Airborne LiDAR-assisted deep learning methodology for riparian land cover classification using aerial photographs and its application for flood modelling
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In response to challenges in land cover classification (LCC), many researchers have experimented recently with classification methods based on artificial intelligence techniques. For LCC mapping of the vegetated Asahi River in Japan, the current study uses deep learning (DL)-based DeepLabV3+ module for image segmentation of aerial photographs. We modified the existing model by concatenating data on its resultant output port to access the airborne laser bathymetry (ALB) dataset, including voxel-based laser points and vegetation height (i.e. digital surface model data minus digital terrain model data). Findings revealed that the modified approach improved the accuracy of LCC greatly compared to our earlier unsupervised ALB-based method, with 25 and 35% improvement, respectively, in overall accuracy and the macro F1-score for November 2017 dataset (no-leaf condition). Finally, by estimating flow-resistance parameters in flood modelling using LCC mapping-derived data, we conclude that the upgraded DL methodology produces better fit between numerically analyzed and observed peak water levels.
en-copyright=
kn-copyright=

en-aut-name=YoshidaKeisuke
en-aut-sei=Yoshida
en-aut-mei=Keisuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=PanShijun
en-aut-sei=Pan
en-aut-mei=Shijun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=TaniguchiJunichi
en-aut-sei=Taniguchi
en-aut-mei=Junichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=NishiyamaSatoshi
en-aut-sei=Nishiyama
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=KojimaTakashi
en-aut-sei=Kojima
en-aut-mei=Takashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=IslamTouhidul
en-aut-sei=Islam
en-aut-mei=Touhidul
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=TOKEN C.E.E. Consultants Co., Ltd.
kn-affil=

affil-num=4
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=5
en-affil=TOKEN C.E.E. Consultants Co., Ltd.
kn-affil=

affil-num=6
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
en-keyword=airborne laser bathymetry
kn-keyword=airborne laser bathymetry
en-keyword=deep learning
kn-keyword=deep learning
en-keyword=flow-resistance parameterization
kn-keyword=flow-resistance parameterization
en-keyword=riparian land cover classification
kn-keyword=riparian land cover classification
en-keyword=semantic segmentation
kn-keyword=semantic segmentation
END

start-ver=1.4
cd-journal=joma
no-vol=17
cd-vols=
no-issue=1
article-no=
start-page=014010
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=20211229
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Evaluation of nitrogen loading in the last 80 years in an urbanized Asian coastal catchment through the reconstruction of severe contamination period
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Most semi-enclosed seas have experienced severe eutrophication owing to high nutrient loading from rivers during rapid population growth periods. In Japan, the coastal areas of some megacities (e.g. Tokyo and Osaka) experienced considerable economic growth during the 1960s-1970s. Therefore, determining the amount of nutrient loading during this period is essential to undertake measures for the conservation of coastal environments. However, determining the nutrient loading that occurred several decades ago is generally difficult owing to lacking water quality records. In this study, the nitrogen loading in the Yamato River catchment, an urbanized coastal catchment in Asia, for 80 years from the 1940s to the 2010s is reconstructed using the Soil and Water Assessment Tool. We considered factors such as population growth, wastewater treatment plant (WWTP) construction, and changes in land and fertilizer usage in different urbanization stages. Results show that the total nitrogen loading in the catchment peaked in the 1970s at 6616 tons yr(-1) owing to untreated wastewater discharge and rapid increase in population growth. By reducing 57% of the nitrogen loading in the 2010s from the catchment, WWTPs have been instrumental in improving the water environment. The decrease in and integration of agricultural land has reduced nitrogen loading attributed to nonpoint sources; however, this reduction was not obvious because of the high fertilizer usage before the 2000s. Overall, the findings of this study provide a comprehensive understanding of the impact of rapid urbanization in an Asian coastal catchment on nitrogen loading during the high economic growth period in the past. This study will be useful for the long-term assessment of nutrient loading in other.
en-copyright=
kn-copyright=

en-aut-name=WangKunyang
en-aut-sei=Wang
en-aut-mei=Kunyang
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OnoderaShin-Ichi
en-aut-sei=Onodera
en-aut-mei=Shin-Ichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=SaitoMitsuyo
en-aut-sei=Saito
en-aut-mei=Mitsuyo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

affil-num=1
en-affil=Graduate School of Integrated Arts and Sciences, Hiroshima University
kn-affil=

affil-num=2
en-affil=Graduate School of Advanced Science and Engineering, Hiroshima University
kn-affil=

affil-num=3
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
en-keyword=long-term
kn-keyword=long-term
en-keyword=nitrogen loading
kn-keyword=nitrogen loading
en-keyword=rapid urbanization
kn-keyword=rapid urbanization
en-keyword=popilation growth
kn-keyword=popilation growth
en-keyword=land use change
kn-keyword=land use change
en-keyword=wastewater treatment plant
kn-keyword=wastewater treatment plant
END

start-ver=1.4
cd-journal=joma
no-vol=36
cd-vols=
no-issue=
article-no=
start-page=100843
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=202108
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Environmental flow sustainability in the Lower Limpopo River Basin, Mozambique
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Study region: This study focuses on the Lower Limpopo River basin (LLRB) in Mozambique, Africa. Study focus: Maintaining environmental flows necessary for ecosystem sustainability represents a significant challenge to water resource management. In this study the sustainability of LLRB was evaluated by comparing hydrologic availability with ecological and anthropogenic needs. Current river ecological status was scored with a habitat integrity index verified through ground-truthing field surveys and aerial imagery data. Local stakeholder interviews were used to further evaluate the habitat index scores. Deficiencies between water availability and ecological-human requirements were assessed with a water scarcity index.<br>
 New Hydrological Insights for the Region: Four environmental flow categories defined as "Excellent", "Fair", "Poor", and "Degraded" coincided to approximately 50 %, 39 %, 27 %, and 14 % of the natural mean annual flow, respectively. Stakeholder interview responses indicated annual water shortages currently occur between August and November and coincide with "Poor" and "Degraded" environmental flow conditions. Water supplies appear to meet consumption needs when calculated on an annual basis with the water scarcity index. However, when calculated monthly, there is not enough to meet human water demand between August and October. This deficit period will likely expand from June to November due to projected increases in future water demands. As the greatest water use in the basin is agricultural irrigation, long-term environmental flows sustainability will likely depend upon effective irrigation management.
en-copyright=
kn-copyright=

en-aut-name=Zefanias NhassengoOsvaldo Silva
en-aut-sei=Zefanias Nhassengo
en-aut-mei=Osvaldo Silva
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=SomuraHiroaki
en-aut-sei=Somura
en-aut-mei=Hiroaki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=WolfeJune III
en-aut-sei=Wolfe
en-aut-mei=June III
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

affil-num=1
en-affil=Escola Superior de Neg´ocios e Empreendedorismo de Chibuto, Universidade Eduardo Mondlane
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=Texas A&M AgriLife, Blackland Research & Extension Center
kn-affil=
en-keyword=Ecosystem sustainability
kn-keyword=Ecosystem sustainability
en-keyword=Environmental flow requirement
kn-keyword=Environmental flow requirement
en-keyword=Small scale irrigation
kn-keyword=Small scale irrigation
en-keyword=Water demand
kn-keyword=Water demand
en-keyword=Water scarcity
kn-keyword=Water scarcity
END

start-ver=1.4
cd-journal=joma
no-vol=27
cd-vols=
no-issue=1
article-no=
start-page=19
end-page=27
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=20210331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=The Kibi Plateau Surface ― relationship with the Paleogene and Miocene deposits in middle western part of Okayama Prefecture, Japan ―
kn-title=新・古第三系の分布に着目した岡山県中西部における 吉備高原地域の地形特性
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The Kibi Plateau Surface is associated with the Paleogene gravel river bed deposits of the Kibi Group and the Miocene marine deposits of the Katsuta Group and the Bihoku Group. These Paleogene and Miocene units are valley fill deposits. The Kibi Group is composed of formations which is deposited by more than 7 different depositional events during earliest to latest Paleogene Period. Repeated cycles of “erosion - formation of new valley system - deposition and fill up the valley” created the low relief topographic surface. The deposition of
the Miocene deposits might complete the Kibi Plateau Surface. Detailed field works have done in middle western part of Okayama Prefecture. The Kibi Plateau Surface in study area is gently dipping from NW (about 600m high) to SE (about 100m high). The distributions of the Paleogene and Miocene deposits fit the surface.
At the southern margin of the Kibi Plateau, the surface is a little inclined (from 400m high to 100m high) where the bottom of paleo-valleys of the Paleogene deposits are subparallel to the surface. It suggests that the gentle tilting of the Kibi Plateau is caused by an up-warping.
en-copyright=
kn-copyright=

en-aut-name=TanakaHajime 
en-aut-sei=Tanaka
en-aut-mei=Hajime 
kn-aut-name=田中元
kn-aut-sei=田中
kn-aut-mei=元
aut-affil-num=1
ORCID=

en-aut-name=SuzukiShigeyuki
en-aut-sei=Suzuki
en-aut-mei=Shigeyuki
kn-aut-name=鈴木茂之
kn-aut-sei=鈴木
kn-aut-mei=茂之
aut-affil-num=2
ORCID=

affil-num=1
en-affil=Fukken Co., Ltd., Okayama branch office
kn-affil=復建調査設計株式会社岡山支社

affil-num=2
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=岡山大学大学院自然科学研究科
en-keyword=Kibi Plateau Surface
kn-keyword=Kibi Plateau Surface
en-keyword=Paleogene
kn-keyword=Paleogene
en-keyword=Neogene
kn-keyword=Neogene
en-keyword=Miocene
kn-keyword=Miocene
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=376
end-page=382
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=20210201
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Swarming and mating behavior in Ephemera orientalis Mclachlan, 1875 (Ephemeroptera: Ephemeridae) with morphological analyses
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Swarming and mating behaviors of a mayfly species, Ephemera orientalis Mclachlan, 1875 were observed in 2015, 2016, and 2018 at a river bank of the Asahi River, Japan. Males started to make swarms between late April and middle May in 2016 and 2018. The numbers of mated pairs in a swarm correlated with the numbers of flying males in a swarm in 2016 and 2018. Swarms were formed during a limited period at dusk most probably because that interval is free from natural enemies. Males competed with each other to copulate with females in swarms. We clarified the function of the forelegs of males, which are significantly longer than those of females. Males used their forelegs to hold up a female from below. Besides forelegs, males have longer tails than females. We will discuss why sexual differences are found in these traits. Our results represent the first observation of swarm mating behavior in E. orientalis.
en-copyright=
kn-copyright=

en-aut-name=MiyatakeTakahisa
en-aut-sei=Miyatake
en-aut-mei=Takahisa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=SugeTaichi
en-aut-sei=Suge
en-aut-mei=Taichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=SuzakiShunsuke
en-aut-sei=Suzaki
en-aut-mei=Shunsuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=TanabeShintaro
en-aut-sei=Tanabe
en-aut-mei=Shintaro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=IshiharaRyo
en-aut-sei=Ishihara
en-aut-mei=Ryo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=MatsumuraKentarou
en-aut-sei=Matsumura
en-aut-mei=Kentarou
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=4
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=5
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=6
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
en-keyword=Aquatic insect
kn-keyword=Aquatic insect
en-keyword=Emergence
kn-keyword=Emergence
en-keyword=Copulation
kn-keyword=Copulation
en-keyword=Foreleg
kn-keyword=Foreleg
en-keyword=Mayfly
kn-keyword=Mayfly
en-keyword=Swarm
kn-keyword=Swarm
END

start-ver=1.4
cd-journal=joma
no-vol=26
cd-vols=
no-issue=1
article-no=
start-page=1
end-page=5
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=202103
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Estimation of actual evapotranspiration in 3 river basins in Okayama prefecture - Comparison of Morton method and modified Brutsaert & Stricker method -
kn-title=岡山県3河川流域における実蒸発散量の推定 : Morton 法と修正 Brutsaert and Stricker 法の比較
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract= In the study, the actual evaporation was estimated in the Asahi River, the Takahashi River, and the Yoshii River basins in Okayama prefecture for four years from January 1999 to December 2002. The Morton method and the modified Brutsaert and Stricker (B & S) method were applied to the three river basins to estimate the actual evapotranspiration and compare the two methods.</br>
 As a result, the actual evapotranspiration by the Morton method was all almost equal to that by the Penman’s potential evapotranspiration, and the evapotranspiration was overestimated rather than the actual evapotranspiration. The actual evapotranspiration by the modified B & S method was below the Penman’s potential evapotranspiration throughout the year, and the total annual amount was about 80% of the potential evapotranspiration. In addition, the modified B & S method showed the general tendency that the actual evapotranspiration was lower in urban area than in the hilly and mountainous areas. 
en-copyright=
kn-copyright=

en-aut-name=MOROIZUMIToshitsugu
en-aut-sei=MOROIZUMI
en-aut-mei=Toshitsugu
kn-aut-name=諸泉利嗣
kn-aut-sei=諸泉
kn-aut-mei=利嗣
aut-affil-num=1
ORCID=

en-aut-name=MIURATakeshi
en-aut-sei=MIURA
en-aut-mei=Takeshi
kn-aut-name=三浦健志
kn-aut-sei=三浦
kn-aut-mei=健志
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学大学院環境生命科学研究科

affil-num=2
en-affil=
kn-affil=岡山大学大学院環境生命科学研究科（名誉教授）
en-keyword=Complementary relationship
kn-keyword=Complementary relationship
en-keyword=Actual evapotranspiration
kn-keyword=Actual evapotranspiration
en-keyword=Potential evapotranspiration
kn-keyword=Potential evapotranspiration
END

start-ver=1.4
cd-journal=joma
no-vol=14
cd-vols=
no-issue=4
article-no=
start-page=143
end-page=149
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=2020
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Estimation of long-term external nutrient loading from watersheds to Lake Biwa by a combined rainfall-runoff model and loading-discharge curve approach
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=External nutrient loadings to Lake Biwa were estimated using a combined tank model and loading-discharge curve approach. The model was applied to collective drainage basins of the lake’s Imazu (northwest), Hikone (northeast), and Otsu (south) areas. The hourly model was conducted using particular discharges from Kita (Ado) river, Takatoki (Ane) river, and Yasu River to obtain loading curves for phosphate (PO4) and silica (SiO2) by assimilating measured concentrations (2002?2003). The tank model was updated by adding an evapotranspiration routine and direct paths of groundwater discharges to the lake floor. The daily model was calibrated through analysis of water budget among the basin, inflow, lake and outflow, and then validated. The model was established and combined into a loading-discharge curve to determine the long-term external nutrient loadings entering the lake (1980?2017). Seasonal variation in nutrient loadings increased during spring and summer and decreased during winter. Annual phosphate-phosphorus (PO4-P) loading ranged from 217 to 296 tons yr?1 in the North Basin and 45 to 76 tons yr?1 in the South Basin, while SiO2 loading fluctuated from 16,027 to 32,655 tons yr?1 and 2,518 to 5,490 tons yr?1 in the North and South Basins, respectively.
en-copyright=
kn-copyright=

en-aut-name=Le TienHuu
en-aut-sei=Le Tien
en-aut-mei=Huu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OkuboKenji
en-aut-sei=Okubo
en-aut-mei=Kenji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=Ho ThiPhuong
en-aut-sei=Ho Thi
en-aut-mei=Phuong
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=SaitoMitsuyo
en-aut-sei=Saito
en-aut-mei=Mitsuyo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

affil-num=1
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=School of Chemical, Biological and Environmental Technologies, Vinh University
kn-affil=

affil-num=4
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=75
cd-vols=
no-issue=1
article-no=
start-page=63
end-page=69
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=202102
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=The Optimal Prepregnancy Body Mass Index for Lactation in Japanese Women with Neonatal Separation as Analyzed by a Differential Equation
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=We used a differential equation to identify the biological relationship between the maternal prepregnancy body mass index (BMI) and lactation on postpartum day 4 in Japanese women with neonatal separation. This retro-spective observational study included 252 mothers (135 primiparas, 117 multiparas) whose singleton neonates were admitted to a neonatal ICU. We formulated hypotheses based on breast anatomy to analyze the relation-ship between the expressed milk obtained on postpartum day 4 and the maternal prepregnancy BMI with the following differential equation: y’(x) = k y(x)/x, where k is the constant, x is the prepregnancy BMI, and y is the expressed milk volume. The formula was then obtained as y(x) = axk, where a is the constant. The Akaike information criterion (AIC) was used to estimate the regression equation with the maximum likelihood for primiparas and multiparas. The best criteria for BMI determined by the AIC were 20.89 kg/m2 in primiparas and 20.19 kg/m2 in multiparas. These were the optimal BMI values for lactation, coinciding with the median prepregnancy BMI in the study population (20.78 kg/m2 in primiparas and 20.06 kg/m2 in multiparas). The formula based on biomathematics might help establish the biological relationship between prepregnancy BMI and breastmilk volume.
en-copyright=
kn-copyright=

en-aut-name=TadaKatsuhiko
en-aut-sei=Tada
en-aut-mei=Katsuhiko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=MiyagiYasunari
en-aut-sei=Miyagi
en-aut-mei=Yasunari
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=NakamuraKazue
en-aut-sei=Nakamura
en-aut-mei=Kazue
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=YorozuMoe
en-aut-sei=Yorozu
en-aut-mei=Moe
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=FukushimaEmi
en-aut-sei=Fukushima
en-aut-mei=Emi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=KumazawaKazumasa
en-aut-sei=Kumazawa
en-aut-mei=Kazumasa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=NakamuraMakoto
en-aut-sei=Nakamura
en-aut-mei=Makoto
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=KageyamaMisao
en-aut-sei=Kageyama
en-aut-mei=Misao
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

affil-num=1
en-affil=Department of Obstetrics and Gynecology, National Hospital Organization, Okayama Medical Center
kn-affil=

affil-num=2
en-affil=Miyake Ofuku Clinic
kn-affil=

affil-num=3
en-affil=Department of Neonatology, National Hospital Organization, Okayama Medical Center
kn-affil=

affil-num=4
en-affil=Department of Obstetrics and Gynecology, National Hospital Organization, Okayama Medical Center
kn-affil=

affil-num=5
en-affil=Department of Nursing, National Hospital Organization, Okayama Medical Center
kn-affil=

affil-num=6
en-affil=Department of Obstetrics and Gynecology, National Hospital Organization, Okayama Medical Center
kn-affil=

affil-num=7
en-affil=Department of Neonatology, National Hospital Organization, Okayama Medical Center
kn-affil=

affil-num=8
en-affil=Department of Neonatology, National Hospital Organization, Okayama Medical Center
kn-affil=
en-keyword=biomathematics
kn-keyword=biomathematics
en-keyword=body mass index
kn-keyword=body mass index
en-keyword=expressed milk
kn-keyword=expressed milk
en-keyword=lactation
kn-keyword=lactation
END

start-ver=1.4
cd-journal=joma
no-vol=15
cd-vols=
no-issue=10
article-no=
start-page=e0241120
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=20211022
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Local perspectives on Ebola during its tenth outbreak in DR Congo: A nationwide qualitative study
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background</br>
The Democratic Republic of Congo (DR Congo) struggled to end the tenth outbreak of Ebola virus disease (Ebola), which appeared in North Kivu in 2018. It was reported that rumors were hampering the response effort. We sought to identify any rumors that could have influenced outbreak containment and affected prevention in unaffected areas of DR Congo.</br> 
Methods</br>
We conducted a qualitative study in DR Congo over a period of 2 months (from August 1 to September 30, 2019) using in-depth interviews (IDIs) and focus group discussions (FGDs). The participants were recruited from five regional blocks using purposeful sampling. Both areas currently undergoing outbreaks and presently unaffected areas were included. We collected participants’ opinions, views, and beliefs about the Ebola virus. The IDIs (n = 60) were performed with key influencers (schoolteachers, religious and political leaders/analysts, and Ebola-frontline workers), following a semi-structured interview guide. FGDs (n = 10) were conducted with community members. Interviews were recorded with a digital voice recorder and simultaneous note-taking. Participant responses were categorized in terms of their themes and subthemes.</br> 
Results</br>
We identified 3 high-level themes and 15 subthemes (given here in parentheses): (1) inadequate knowledge of the origin or cause of Ebola (belief in a metaphysical origin, insufficient awareness of Ebola transmission via an infected corpse, interpretation of disease as God’s punishment, belief in nosocomial Ebola, poor hygiene, and bathing in the Congo River). Ebola was interpreted as (2) a plot by multinational corporations (fears of genocide, Ebola understood as a biological weapon, concerns over organ trafficking, and Ebola was taken to be the result of business actions). Finally Ebola was rumored to be subject to (3) politicization (political authorities seen as ambivalent, exclusion of some community leaders from response efforts, distrust of political authorities, and distrust in the healthcare system).</br>
Conclusions</br>
Due to the skepticism against Ebola countermeasures, it is critical to understand widespread beliefs about the disease to implement actions that will be effective, including integrating response with the unmet needs of the population.
en-copyright=
kn-copyright=

en-aut-name=MuzemboBasilua Andre
en-aut-sei=Muzembo
en-aut-mei=Basilua Andre
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=NtontoloNgangu Patrick
en-aut-sei=Ntontolo
en-aut-mei=Ngangu Patrick
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=NgatuNlandu Roger
en-aut-sei=Ngatu
en-aut-mei=Nlandu Roger
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=KhatiwadaJanuka
en-aut-sei=Khatiwada
en-aut-mei=Januka
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=NgombeKabamba Leon
en-aut-sei=Ngombe
en-aut-mei=Kabamba Leon
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=NumbiOscar Luboya
en-aut-sei=Numbi
en-aut-mei=Oscar Luboya
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=NzajiKabamba Michel
en-aut-sei=Nzaji
en-aut-mei=Kabamba Michel
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=MaotelaKabinda Jeff
en-aut-sei=Maotela
en-aut-mei=Kabinda Jeff
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

en-aut-name=NgoyiMukonkole Jean
en-aut-sei=Ngoyi
en-aut-mei=Mukonkole Jean
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=

en-aut-name=SuzukiTomoko
en-aut-sei=Suzuki
en-aut-mei=Tomoko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=

en-aut-name=WadaKoji
en-aut-sei=Wada
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=11
ORCID=

en-aut-name=IkedaShunya
en-aut-sei=Ikeda
en-aut-mei=Shunya
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=12
ORCID=

affil-num=1
en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=2
en-affil=Department of Family Medicine and Primary health, Protestant University of Congo
kn-affil=

affil-num=3
en-affil=Department of Public Health, Kagawa University Faculty of Medicine
kn-affil=

affil-num=4
en-affil=Department of Public Health, School of Medicine, International University of Health and Welfare
kn-affil=

affil-num=5
en-affil=Department of Public Health, University of Kamina
kn-affil=

affil-num=6
en-affil=School of Public Health, University of Lubumbashi
kn-affil=

affil-num=7
en-affil=School of Public Health, University of Lubumbashi
kn-affil=

affil-num=8
en-affil=Centre National de Transfusion Sanguine
kn-affil=

affil-num=9
en-affil=Research Unit, ISTM-Lubumbashi
kn-affil=

affil-num=10
en-affil=Department of Public Health, School of Medicine, International University of Health and Welfare
kn-affil=

affil-num=11
en-affil=Department of Public Health, School of Medicine, International University of Health and Welfare
kn-affil=

affil-num=12
en-affil=Department of Public Health, School of Medicine, International University of Health and Welfare
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=60
cd-vols=
no-issue=1
article-no=
start-page=300
end-page=314
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=20200229
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Disaster report of 2018 July heavy rain for geo-structures and slopes in Okayama
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In July 2018, heavy rain and a large amount of damage to geo-structures and natural slopes were reported in Okayama, Japan. In particular, in the area surrounding the Oda River System, 52 people drowned due to the breach of river banks. Besides the flooding of rivers, the earth-fill dams of many water reservoirs were damaged. The stability of the large number of earth-fill dams in the Setouchi area is very important. Heavy rain is often associated with the collapse of slopes. In Okayama, many shallow slope failures or debris flows occurred over a wide area, particularly in the western part of the prefecture. Through detailed investigations, the mechanism of this geo-disaster was clarified.
en-copyright=
kn-copyright=

en-aut-name=NishimuraS.
en-aut-sei=Nishimura
en-aut-mei=S.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=TakeshitaY.
en-aut-sei=Takeshita
en-aut-mei=Y.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=NishiyamaS.
en-aut-sei=Nishiyama
en-aut-mei=S.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=SuzukiS.
en-aut-sei=Suzuki
en-aut-mei=S.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=ShibataT.
en-aut-sei=Shibata
en-aut-mei=T.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=ShukuT.
en-aut-sei=Shuku
en-aut-mei=T.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=KomatsuM.
en-aut-sei=Komatsu
en-aut-mei=M.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=KimB.
en-aut-sei=Kim
en-aut-mei=B.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

affil-num=1
en-affil=Okayama University
kn-affil=

affil-num=2
en-affil=Okayama University
kn-affil=

affil-num=3
en-affil=Okayama University
kn-affil=

affil-num=4
en-affil=Okayama University
kn-affil=

affil-num=5
en-affil=Okayama University
kn-affil=

affil-num=6
en-affil=Okayama University
kn-affil=

affil-num=7
en-affil=Okayama University
kn-affil=

affil-num=8
en-affil=Okayama University
kn-affil=
en-keyword=2018 July heavy rain
kn-keyword=2018 July heavy rain
en-keyword=BreachRiver bank
kn-keyword=BreachRiver bank
en-keyword=Bank of reservoir
kn-keyword=Bank of reservoir
en-keyword=Earth-fill dam
kn-keyword=Earth-fill dam
en-keyword=Slope failure
kn-keyword=Slope failure
en-keyword=Heavy rain disaster
kn-keyword=Heavy rain disaster
en-keyword=Debris flow
kn-keyword=Debris flow
en-keyword=Overflow
kn-keyword=Overflow
en-keyword=Erosion
kn-keyword=Erosion
END

start-ver=1.4
cd-journal=joma
no-vol=247
cd-vols=
no-issue=
article-no=
start-page=125933
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=20200116
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Application of the cellular oxidation biosensor to Toxicity Identification Evaluations for high-throughput toxicity assessment of river water
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Toxicity Identification Evaluation (TIE) is a useful method for the classification and identification of toxicants in a composite environment water sample. However, its extension to a larger sample size has been restrained owing to the limited throughput of toxicity bioassays. Here we reported the development of a high-throughput method of TIE Phase I. This newly developed method was assisted by the fluorescence-based cellular oxidation (CO) biosensor fabricated with roGFP2-expressing bacterial cells in 96-well microplate format. The assessment of four river water samples from Langat river basin by this new method demonstrated that the contaminant composition of the four samples can be classified into two distinct groups. The entire toxicity assay consisted of 2338 tests was completed within 12 h with a fluorescence microplate reader. Concurrently, the sample volume for each assay was reduced to 50 μL, which is 600 to 4700 times lesser to compare with conventional bioassays. These imply that the throughput of the CO biosensor-assisted TIE Phase I is now feasible for constructing a large-scale toxicity monitoring system, which would cover a whole watershed scale.
en-copyright=
kn-copyright=

en-aut-name=OoiLia
en-aut-sei=Ooi
en-aut-mei=Lia
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OkazakiKeisuke
en-aut-sei=Okazaki
en-aut-mei=Keisuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=Arias-BarreiroCarlos R.
en-aut-sei=Arias-Barreiro
en-aut-mei=Carlos R.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=HengLee Yook
en-aut-sei=Heng
en-aut-mei=Lee Yook
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=MoriIzumi C.
en-aut-sei=Mori
en-aut-mei=Izumi C.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil= Institute of Plant Science and Resources, Okayama University
kn-affil=

affil-num=2
en-affil=Institute of Plant Science and Resources, Okayama University
kn-affil=

affil-num=3
en-affil=nstitute of Plant Science and Resources, Okayama University
kn-affil=

affil-num=4
en-affil=Southeast Asia Disaster Prevention Research Initiative (SEADPRI-UKM), Institute for Environment and Development (LESTARI), The National University of Malaysia
kn-affil=

affil-num=5
en-affil=Institute of Plant Science and Resources, Okayama University
kn-affil=
en-keyword=High-throughput cytotoxicity biosensor
kn-keyword=High-throughput cytotoxicity biosensor
en-keyword=Toxicity identification evaluation
kn-keyword=Toxicity identification evaluation
en-keyword=River water pollution
kn-keyword=River water pollution
en-keyword=Ecotoxicity management
kn-keyword=Ecotoxicity management
en-keyword=Integrated watershed management
kn-keyword=Integrated watershed management
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=6
article-no=
start-page=063H03
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2019
dt-pub=20190629
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Development of a method for measuring rare earth elements in the environment for future experiments with gadolinium-loaded detectors
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Demand to use gadolinium (Gd) in detectors is increasing in the field of elementary particle physics, especially in neutrino measurements and dark matter searches. Large amounts of Gd are used in these experiments. To assess the impact of Gd on the environment it is becoming important to measure the baseline concentrations of Gd. Such measurement, however, is not easy due to interference by other elements. In this paper a method for measuring the concentrations of rare earth elements, including Gd, is proposed. In the method, inductively coupled plasma-mass spectrometry is utilized after collecting the dissolved elements in chelating resin. Results of the ability to detect anomalous concentrations of rare earth elements in river water samples in the Kamioka and Toyama areas are also reported.
en-copyright=
kn-copyright=

en-aut-name=ItoS.
en-aut-sei=Ito
en-aut-mei=S.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OkadaT.
en-aut-sei=Okada
en-aut-mei=T.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=TakakuY.
en-aut-sei=Takaku
en-aut-mei=Y.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=HaradaM.
en-aut-sei=Harada
en-aut-mei=M.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=IkedaM.
en-aut-sei=Ikeda
en-aut-mei=M.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=KishimotoY.
en-aut-sei=Kishimoto
en-aut-mei=Y.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=KoshioY.
en-aut-sei=Koshio
en-aut-mei=Y.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=NakahataM.
en-aut-sei=Nakahata
en-aut-mei=M.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

en-aut-name=NakajimaY.
en-aut-sei=Nakajima
en-aut-mei=Y.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=

en-aut-name=SekiyaH.
en-aut-sei=Sekiya
en-aut-mei=H.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=

affil-num=1
en-affil=Okayama University, Faculty of Science
kn-affil=

affil-num=2
en-affil=Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
kn-affil=

affil-num=3
en-affil=Institute for Environmental Sciences, Department of Radioecology
kn-affil=

affil-num=4
en-affil=Okayama University, Faculty of Science
kn-affil=

affil-num=5
en-affil=Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
kn-affil=

affil-num=6
en-affil=Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
kn-affil=

affil-num=7
en-affil=Okayama University, Faculty of Science
kn-affil=

affil-num=8
en-affil=Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
kn-affil=

affil-num=9
en-affil=Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
kn-affil=

affil-num=10
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2019
dt-pub=20190925
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=ベトナム中北部カー川流域の物質輸送モデルに関する研究
kn-title=Synoptic transport modeling in the Ca River Basin, North Central Vietnam
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=HO THI PHUONG
en-aut-sei=HO THI PHUONG
en-aut-mei=
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=Okayama University
kn-affil=岡山大学大学院
END

start-ver=1.4
cd-journal=joma
no-vol=25
cd-vols=
no-issue=1
article-no=
start-page=39
end-page=48
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2018
dt-pub=20181227
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=U-Pb single grain zircon ages for Sanbagawa Metamorphic Rocks in central Shikoku (Japan): the Sanbagawa Belt re-united
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract= The high-P/low-T Sanbagawa Metamorphic Belt that traverses SW Japan, has been subdivided into two belts thought to have been metamorphosed at ca. 120 Ma and at ca. 65 Ma (‘Sanbagawa Metamorphic Rocks’ and ‘Shimanto Metamorphic Rocks’). The subdivision was based on the assumption that metamorphism occurred at ca. 116 Ma, largely based on an early Rb-Sr isotope study and zircon data obtained for the eclogite unit of the Sanbagawa Belt, whereas in some parts of the belt detrital zircons of late Cretaceous age (90-80 Ma) were discovered. Analysis of detrital zircons sampled from two sites within the area considered to expose the older ‘Sanbagawa Metamorphic Rocks’, including the area investigated by the Rb-Sr study, reveals the presence of zircons younger than 95 Ma in all samples and some grains as young as 80 ± 4 Ma. It is therefore concluded that the Sanbagawa Belt is one single tectonic entity that formed in the Late Cretaceous though it contains older components, including fossiliferous clasts, older basic meta-volcanics and eclogite units that may record earlier metamorphic events.
en-copyright=
kn-copyright=

en-aut-name=KnittelUlrich
en-aut-sei=Knittel
en-aut-mei=Ulrich
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=WaliaMonika
en-aut-sei=Walia
en-aut-mei=Monika
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=SuzukiShigeyuki
en-aut-sei=Suzuki
en-aut-mei=Shigeyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=LeeYuan-Hsi
en-aut-sei=Lee
en-aut-mei=Yuan-Hsi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

affil-num=1
en-affil=Clay and Interface Mineralogy, RWTH Aachen University
kn-affil=

affil-num=2
en-affil=Department of Geosciences, National Taiwan University
kn-affil=

affil-num=3
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=4
en-affil=Department of Earth and Environmental Sciences, National Chung-Cheng University
kn-affil=
en-keyword=U-Pb zircon dating
kn-keyword=U-Pb zircon dating
en-keyword=Sanbagawa Metamorphic Belt
kn-keyword=Sanbagawa Metamorphic Belt
en-keyword=Late Cretaceous
kn-keyword=Late Cretaceous
en-keyword=Asemi River
kn-keyword=Asemi River
END

start-ver=1.4
cd-journal=joma
no-vol=45
cd-vols=
no-issue=
article-no=
start-page=1
end-page=14
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2018
dt-pub=20180331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ヘミングウエイの短編 “Big Two-Hearted River” : Part I 冒頭部 : 教育的文体論を活用した教材
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=小迫勝
kn-aut-sei=小迫
kn-aut-mei=勝
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学名誉教授
END

start-ver=1.4
cd-journal=joma
no-vol=924
cd-vols=
no-issue=
article-no=
start-page=60
end-page=67
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2016
dt-pub=20160614
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Chelate titrations of Ca2+ and Mg2+ using microfluidic paper-based analytical devices
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=We developed microfluidic paper-based analytical devices (μPADs) for the chelate titrations of Ca2+ and Mg2+ in natural water. The μPAD consisted of ten reaction zones and ten detection zones connected through narrow channels to a sample zone located at the center. Buffer solutions with a pH of 10 or 13 were applied to all surfaces of the channels and zones. Different amounts of ethylenediaminetetraacetic acid (EDTA) were added to the reaction zones and a consistent amount of a metal indicator (Eriochrome Black T or Calcon) was added to the detection zones. The total concentrations of Ca2+ and Mg2+ (total hardness) in the water were measured using a μPAD containing a buffer solution with a pH of 10, whereas only Ca2+ was titrated using a μPAD prepared with a potassium hydroxide solution with a pH of 13. The μPADs permitted the determination of Ca2+ and Mg2+ in mineral water, river water, and seawater samples within only a few minutes using only the naked eye?no need of instruments.
en-copyright=
kn-copyright=

en-aut-name=KaritaShingo
en-aut-sei=Karita
en-aut-mei=Shingo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=KanetaTakashi
en-aut-sei=Kaneta
en-aut-mei=Takashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

affil-num=1
en-affil=Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University
kn-affil=岡山大学大学院自然科学研究科

affil-num=2
en-affil=Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University
kn-affil=岡山大学大学院自然科学研究科
en-keyword=Chelate titration
kn-keyword=Chelate titration
en-keyword=Microfluidic paper-based analytical device
kn-keyword=Microfluidic paper-based analytical device
en-keyword=Hardness
kn-keyword=Hardness
en-keyword=Calcium
kn-keyword=Calcium
en-keyword=Magnesium
kn-keyword=Magnesium
en-keyword=Natural water
kn-keyword=Natural water
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=121
end-page=131
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2014
dt-pub=201406
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Water quality affects diatom diversity in Finnish rivers
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=ODAMakiko
en-aut-sei=ODA
en-aut-mei=Makiko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=LEPP?NENMatti
en-aut-sei=LEPP?NEN
en-aut-mei=Matti
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=KARJALAINENAnna
en-aut-sei=KARJALAINEN
en-aut-mei=Anna
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=KARJALAINENSatu-Maaria
en-aut-sei=KARJALAINEN
en-aut-mei=Satu-Maaria
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=SUITOHiroshi
en-aut-sei=SUITO
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=HUTTULATimo
en-aut-sei=HUTTULA
en-aut-mei=Timo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

affil-num=1
en-affil=
kn-affil=

affil-num=2
en-affil=
kn-affil=

affil-num=3
en-affil=
kn-affil=

affil-num=4
en-affil=
kn-affil=

affil-num=5
en-affil=
kn-affil=

affil-num=6
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=58
end-page=68
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2014
dt-pub=201406
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Transport model application in River Vuoksi
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=ROPPONENJanne
en-aut-sei=ROPPONEN
en-aut-mei=Janne
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=HUTTULATimo
en-aut-sei=HUTTULA
en-aut-mei=Timo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=

affil-num=2
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=56
cd-vols=
no-issue=2
article-no=
start-page=220
end-page=201
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20070131
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Case concerning Pulp Mills on the River Uruguay, Request for the Indication of Provisional Measures, Order of 13 July 2006.
kn-title=国際司法裁判所　ウルグアイ河のパルプ工場事件 （仮保全措置命令 2006年7月13日）
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=TamadaD.
en-aut-sei=Tamada
en-aut-mei=D.
kn-aut-name=玉田大
kn-aut-sei=玉田
kn-aut-mei=大
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学大学院社会文化科学研究科
END

start-ver=1.4
cd-journal=joma
no-vol=59
cd-vols=
no-issue=4
article-no=
start-page=229
end-page=237
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1982
dt-pub=19820327
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Anionic surfactant concentration in water of Lake Kojima and influent rivers
kn-title=児島湖および流入河川水中の陰イオン界面活性剤濃度
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=MuramotoS.
en-aut-sei=Muramoto
en-aut-mei=S.
kn-aut-name=村本茂樹
kn-aut-sei=村本
kn-aut-mei=茂樹
aut-affil-num=1
ORCID=

en-aut-name=AoyamaI.
en-aut-sei=Aoyama
en-aut-mei=I.
kn-aut-name=青山勲
kn-aut-sei=青山
kn-aut-mei=勲
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=

affil-num=2
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=55
cd-vols=
no-issue=3
article-no=
start-page=103
end-page=144
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1976
dt-pub=19760228
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Chemical investigation on the quality and characteristics of river waters in the Tohoku district
kn-title=東北地方の河川水質について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KobayashiJ.
en-aut-sei=Kobayashi
en-aut-mei=J.
kn-aut-name=小林純
kn-aut-sei=小林
kn-aut-mei=純
aut-affil-num=1
ORCID=

en-aut-name=MoriiF.
en-aut-sei=Morii
en-aut-mei=F.
kn-aut-name=森井ふじ
kn-aut-sei=森井
kn-aut-mei=ふじ
aut-affil-num=2
ORCID=

en-aut-name=MuramotoS.
en-aut-sei=Muramoto
en-aut-mei=S.
kn-aut-name=村本茂樹
kn-aut-sei=村本
kn-aut-mei=茂樹
aut-affil-num=3
ORCID=

en-aut-name=NakashimaS.
en-aut-sei=Nakashima
en-aut-mei=S.
kn-aut-name=中島進
kn-aut-sei=中島
kn-aut-mei=進
aut-affil-num=4
ORCID=

en-aut-name=UrakamiY.
en-aut-sei=Urakami
en-aut-mei=Y.
kn-aut-name=浦上佳子
kn-aut-sei=浦上
kn-aut-mei=佳子
aut-affil-num=5
ORCID=

en-aut-name=NishizakiH.
en-aut-sei=Nishizaki
en-aut-mei=H.
kn-aut-name=西崎日佐夫
kn-aut-sei=西崎
kn-aut-mei=日佐夫
aut-affil-num=6
ORCID=

en-aut-name=TeraokaH.
en-aut-sei=Teraoka
en-aut-mei=H.
kn-aut-name=寺岡久之
kn-aut-sei=寺岡
kn-aut-mei=久之
aut-affil-num=7
ORCID=

en-aut-name=NagaoN.
en-aut-sei=Nagao
en-aut-mei=N.
kn-aut-name=長尾憲人
kn-aut-sei=長尾
kn-aut-mei=憲人
aut-affil-num=8
ORCID=

affil-num=1
en-affil=
kn-affil=

affil-num=2
en-affil=
kn-affil=

affil-num=3
en-affil=
kn-affil=

affil-num=4
en-affil=
kn-affil=

affil-num=5
en-affil=
kn-affil=

affil-num=6
en-affil=
kn-affil=

affil-num=7
en-affil=
kn-affil=

affil-num=8
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=57
cd-vols=
no-issue=1
article-no=
start-page=17
end-page=54
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1978
dt-pub=197802
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Chemical investigations on the quality and charateristics of river water in the Hokkaido district
kn-title=北海道地方の河川水質について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KobayashiJ.
en-aut-sei=Kobayashi
en-aut-mei=J.
kn-aut-name=小林純
kn-aut-sei=小林
kn-aut-mei=純
aut-affil-num=1
ORCID=

en-aut-name=MoriiF.
en-aut-sei=Morii
en-aut-mei=F.
kn-aut-name=森井ふじ
kn-aut-sei=森井
kn-aut-mei=ふじ
aut-affil-num=2
ORCID=

en-aut-name=MuramotoS.
en-aut-sei=Muramoto
en-aut-mei=S.
kn-aut-name=村本茂樹
kn-aut-sei=村本
kn-aut-mei=茂樹
aut-affil-num=3
ORCID=

en-aut-name=NakashimaS.
en-aut-sei=Nakashima
en-aut-mei=S.
kn-aut-name=中島進
kn-aut-sei=中島
kn-aut-mei=進
aut-affil-num=4
ORCID=

en-aut-name=UrakamiY.
en-aut-sei=Urakami
en-aut-mei=Y.
kn-aut-name=浦上佳子
kn-aut-sei=浦上
kn-aut-mei=佳子
aut-affil-num=5
ORCID=

en-aut-name=NishizakiH.
en-aut-sei=Nishizaki
en-aut-mei=H.
kn-aut-name=西崎日佐夫
kn-aut-sei=西崎
kn-aut-mei=日佐夫
aut-affil-num=6
ORCID=

en-aut-name=TeraokaH.
en-aut-sei=Teraoka
en-aut-mei=H.
kn-aut-name=寺岡久之
kn-aut-sei=寺岡
kn-aut-mei=久之
aut-affil-num=7
ORCID=

en-aut-name=NagaoN.
en-aut-sei=Nagao
en-aut-mei=N.
kn-aut-name=長尾憲人
kn-aut-sei=長尾
kn-aut-mei=憲人
aut-affil-num=8
ORCID=

affil-num=1
en-affil=
kn-affil=

affil-num=2
en-affil=
kn-affil=

affil-num=3
en-affil=
kn-affil=

affil-num=4
en-affil=
kn-affil=

affil-num=5
en-affil=
kn-affil=

affil-num=6
en-affil=
kn-affil=

affil-num=7
en-affil=
kn-affil=

affil-num=8
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=51
cd-vols=
no-issue=1-2
article-no=
start-page=111
end-page=127
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1965
dt-pub=196512
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Quantities of nitrate，ammonium，nitrite, and phosphate carried into the Bay of Ise through the Kiso, Nagara, and Ibi rivers.
kn-title=木曽三川河口部および北伊勢湾における栄養塩類の研究(第1報) 三川による硝酸,アンモニア,亜硝酸及び燐酸塩類の伊勢湾への供給量について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KobayashiJ.
en-aut-sei=Kobayashi
en-aut-mei=J.
kn-aut-name=小林純
kn-aut-sei=小林
kn-aut-mei=純
aut-affil-num=1
ORCID=

en-aut-name=HarunaS.
en-aut-sei=Haruna
en-aut-mei=S.
kn-aut-name=春名幸子
kn-aut-sei=春名
kn-aut-mei=幸子
aut-affil-num=2
ORCID=

en-aut-name=HattoriH.
en-aut-sei=Hattori
en-aut-mei=H.
kn-aut-name=服部浩子
kn-aut-sei=服部
kn-aut-mei=浩子
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=

affil-num=2
en-affil=
kn-affil=

affil-num=3
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=48
cd-vols=
no-issue=2
article-no=
start-page=63
end-page=106
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1961
dt-pub=196102
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=A chemical study on the average quality and characteristics of river waters of Japan.
kn-title=日本の河川の平均水質とその特徴に関する研究
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KobayashiJ.
en-aut-sei=Kobayashi
en-aut-mei=J.
kn-aut-name=小林純
kn-aut-sei=小林
kn-aut-mei=純
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=41
cd-vols=
no-issue=1
article-no=
start-page=27
end-page=49
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1953
dt-pub=19530331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Chemical Investigation on the water of Rivers in Japan. II, On the Quality of Water in the Kyushu District, (A).
kn-title=本邦河川の化學的研究　第2報　九州地方の水質について　前篇
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KobayashiJun
en-aut-sei=Kobayashi
en-aut-mei=Jun
kn-aut-name=小林純
kn-aut-sei=小林
kn-aut-mei=純
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=11
cd-vols=
no-issue=1
article-no=
start-page=12
end-page=21
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1957
dt-pub=1957
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=ON GEOGRAPHICAL RELATIONSHIP BETWEEN THE CHEMICAL NATURE OF RIVER WATER AND DEATH-RATE FROM APOPLEXY (Preliminary Report)
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KobayashiJun
en-aut-sei=Kobayashi
en-aut-mei=Jun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=11
cd-vols=
no-issue=2
article-no=
start-page=167
end-page=233
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1959
dt-pub=1959
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=CHEMICAL INVESTIGATION ON RIVER WATERS OF SOUTHEASTERN ASIATIC COUNTRIES (Report I.) THE QUALITY OF WATERS OF THAILAND
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KobayashiJ.
en-aut-sei=Kobayashi
en-aut-mei=J.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=11
cd-vols=
no-issue=3
article-no=
start-page=313
end-page=357
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1960
dt-pub=1960
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=A CHEMICAL STUDY OF THE AVERAGE QUAUTY AND CHARACTERISTICS OF RIVER WATERS OF JAPAN
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KobayashiJun
en-aut-sei=Kobayashi
en-aut-mei=Jun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=9
cd-vols=
no-issue=3
article-no=
start-page=329
end-page=356
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1951
dt-pub=1951
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Chemical Investigation on the Water of Rivers in japan. I. On the Quality of Water in Akita Prefecture.
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KobayashiJun
en-aut-sei=Kobayashi
en-aut-mei=Jun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=60
cd-vols=
no-issue=4
article-no=
start-page=452
end-page=459
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=201112
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Analysis of the effectiveness of control measures against Schistosoma mekongi using an intra- and inter-village model in Champasak Province, Lao PDR
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Schistosomiasis mekongi is prevalent in the Khong district of Lao PDR, made up of one big island. Khong, and numerous small islands in the Mekong River. Schistosoma mekongi is spread by Neotricula aperta as the intermediate host along the Mekong River. Therefore, even if an epidemic of S. mekongi were stamped out in a certain village, infection may recur if the source of infection is a village located in the upper reaches of the Mekong River. The purpose of this study was to construct a mathematical model for the transmission of S. mekongi among villages from the upper to lower Mekong River to estimate the effect of control measures against it. The chief characteristic of the present model is competence in dealing with the spread of infection among villages through the Mekong River in consideration of the reduction in longevity of cercariae and miracidia and their diffusion in the river. The model also takes into account seasonal fluctuation in the water level of the Mekong River, which affects human behavior in terms of water contact. The results of simulations indicated that the prevalence of schistosomiasis mekongi would be suppressed to a low level for a long time in a village further downstream when universal mass treatment is performed in villages further upstream simultaneously.
en-copyright=
kn-copyright=

en-aut-name=FukuharaKazuma
en-aut-sei=Fukuhara
en-aut-mei=Kazuma
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=PhompidaSamlane
en-aut-sei=Phompida
en-aut-mei=Samlane
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=InsisiengmaySithat
en-aut-sei=Insisiengmay
en-aut-mei=Sithat
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=KirinokiMasashi
en-aut-sei=Kirinoki
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=ChigusaYuichi
en-aut-sei=Chigusa
en-aut-mei=Yuichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=NakamuraSatoshi
en-aut-sei=Nakamura
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=MatsudaHajime
en-aut-sei=Matsuda
en-aut-mei=Hajime
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=IshikawaHirofumi
en-aut-sei=Ishikawa
en-aut-mei=Hirofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

affil-num=1
en-affil=
kn-affil=Department Human Ecology, Graduate School of Environmental Science, Okayama University

affil-num=2
en-affil=
kn-affil=National Centre of Malariology, Parasitology and Entomology, Ministry of Health, Lao PDR

affil-num=3
en-affil=
kn-affil=Pasteur Institute of Laos, Ministry of Health, Lao PDR

affil-num=4
en-affil=
kn-affil=Laboratory of Tropical Medicine and Parasitology, Dokkyo Medical University

affil-num=5
en-affil=
kn-affil=Laboratory of Tropical Medicine and Parasitology, Dokkyo Medical University

affil-num=6
en-affil=
kn-affil=Department of Tropical Medicine and Malaria, Research Institute, National Center for Global Health and Medicine

affil-num=7
en-affil=
kn-affil=Institute of International Education and Research, Dokkyo Medical University

affil-num=8
en-affil=
kn-affil=Department Human Ecology, Graduate School of Environmental Science, Okayama University
en-keyword=Schistosoma mekongi
kn-keyword=Schistosoma mekongi
en-keyword=Khong; Mekong River
kn-keyword=Khong; Mekong River
en-keyword=Mathematical model
kn-keyword=Mathematical model
en-keyword=Universal mass treatment (UT)
kn-keyword=Universal mass treatment (UT)
END

start-ver=1.4
cd-journal=joma
no-vol=39
cd-vols=
no-issue=444
article-no=
start-page=124
end-page=132
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1927
dt-pub=19270131
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=The geographical distribution of the first intermediate host, "Bythinia striatula var. Japonica", in Okayama prefecture
kn-title=岡山縣下ニ於ケル肝臟「ヂストマ」第一中間宿主「マメタニシ」ノ分布ニ就テ
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In order to determine the infected or susceptible areas from Clonorchis sinensis, the author has, during the past one and a half years, investigated the geographical distribution of Bythiniae, covering 266 different towns and villages out of 398 in the whole prefecture, and come to the following conclusions:- 1. The area in which Bythiniae live is the south-western part of the prefecture, i. e., along the down-streams of the three largest rivers; the area is oblong, its diameter being about 60 k. m. from east to west and about 16 k. m. from south to north. Across this area runs the Sanyo Railway Line. The north, east and south boundaries are surrounded by a doubtful zone of about 4 k. m. in width, while the west boundary reaches to a slightly affected area of the neighbouring prefecture, Hiroshima.
The severely infected region, located nearly centrally, is a lowland of clayey soil along the shore of the Kojima Bay, with many canals in which the water flows very slowly or is rather stagnant. In these canals, there are many kinds of water plants growing abundantly, and there can be seen numberless fresh-water fish such as Pseudorasbora parva living. The most severely affected area lies within about 3 k. m. from the shore. In this district, it is not difficult, during the summer time, to catch several hundreds of Bythiniae by a few scoops of a net having a diameter of two-thirds of one meter. 2. The density of Bythiniae is nearly in inverse proportion to the distance from the severest center. On the contrary, it is nearly in direct proportion to the number of Clonorchis cysts in a second intermediate host, and to the number of cases of the fluke carriers, and furthermore to the extent of clayey soil, and accordingly to the activity of rush cultivation, the cultivation being made practically in clayey soil. The original paper contains the outline map, the explanation of which will be: Dotted………………doubtful zone 
Lined………………slight or moderate zone 
Cross-lined…………severe zone 
Black triangle……name of county
◎……………………city of Okayama
en-copyright=
kn-copyright=

en-aut-name=NaganoKanji
en-aut-sei=Nagano
en-aut-mei=Kanji
kn-aut-name=長野寛治
kn-aut-sei=長野
kn-aut-mei=寛治
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山醫科大學解剖學教室
END

start-ver=1.4
cd-journal=joma
no-vol=36
cd-vols=
no-issue=1
article-no=
start-page=17
end-page=28
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2001
dt-pub=200112
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Application of Dead Beat Control method to the Water Level Control of Small-scale Hydroelectric Power Plant
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Small Scale Hydroelectric Power Generation is made using the water drop caused by the gradient difference between that of the river and that of the penstock. The water flow in this system apt to vary with time. Especially, at the time of the flood or that of the dry, the flow in the water stream varies largely. To realize the stable generation, it is necessary to maintain the water level in the head tank located in the mid way in the stream channel at a constant level. In this paper, variation of water level is forecasted using two-tank model for the penstock and the head tank and the water level control algorithm is proposed by deadbeat control. The effectiveness of the algorithm is evaluated beforehand using the simulation program of the water environment for the hydroelectric generation system.
en-copyright=
kn-copyright=

en-aut-name=EndoShinichiro
en-aut-sei=Endo
en-aut-mei=Shinichiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=KonishiMasami
en-aut-sei=Konishi
en-aut-mei=Masami
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Dept. Electronic Control Engineering Gifu National College of Technology

affil-num=2
en-affil=
kn-affil=Dept. Electrical and Electronic Engineering Okayama Univerisity
END

start-ver=1.4
cd-journal=joma
no-vol=25
cd-vols=
no-issue=
article-no=
start-page=31
end-page=34
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2009
dt-pub=200903
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Migration limited in fresh water and adaptation to flood area of kissing loach - Ecological study of kissing loach in Yoshii River system, Okayama -
kn-title=アユモドキの“淡水回遊”と氾濫原環境への適応〜吉井川水系における生態学的研究〜
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=AbeTsukasa
en-aut-sei=Abe
en-aut-mei=Tsukasa
kn-aut-name=阿部司
kn-aut-sei=阿部
kn-aut-mei=司
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学大学院自然科学研究科牛窓臨海実験所
END

start-ver=1.4
cd-journal=joma
no-vol=49
cd-vols=
no-issue=3
article-no=
start-page=635
end-page=642
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1937
dt-pub=19370331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=About the Epidemic of a Kind of Feveric Jaundice occurred in some Parts of Okayama City during the later Summer 1935
kn-title=昭和10年晩夏岡山市地方ニ流行シタルー熱性黄疸病ニ就テ
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=There occurred an epidemic of a kind of feveric jaundice in some parts of Okayama City and its vicinity from the later part of Summer till early autumn 1935. As we had never learned such an outbreak of such an epidemic in these districts, we wished to make it clear. We have studied it under the guidance of Prof. M. Suzuki and our study as a whole resulted as follows: 1) To our regret, we could not succeed in isolating the causal agent. This may be we think, for when we set about the study, the epidemic had already come to its closing period. 2) The clinical symptoms of this disease, we observed, were quite identical with those of the Sakushu fever. 3) And as the serological tests we examined the Pfeiffers phenomenon test and the agglomeration reaction on 12 cases and obtained: 7 positive reaction with Akiyami repto. type A. 3 positive reaction with Akiyami repto. type B. these 10 negative reaction with repto. ict. haemorrha. and the rest 2 of 12 cases gave negative reaction with any of these reptospiras. 4) We cannot yet dare to describe clearly from the epidemiological point of view why such a prevalence of this disease broke out in 1935, but it might be regarded as remarkable facts to indicate some relationship between the great inundation and the epidemic that the infected locality was visited by a disastrous inundation in the preceding year, that the upper course district of the flooded river Asahi was known as the region influenced by the Sakushu fever, and that the infected parts of Okayama City borders the suburbs where a great number of the rats, regarded as the mediators of the Sakushu fever are living, etc.
You will have still more reports after our further study in the future.
en-copyright=
kn-copyright=

en-aut-name=MurakamiS.
en-aut-sei=Murakami
en-aut-mei=S.
kn-aut-name=村上榮
kn-aut-sei=村上
kn-aut-mei=榮
aut-affil-num=1
ORCID=

en-aut-name=MikiY.
en-aut-sei=Miki
en-aut-mei=Y.
kn-aut-name=三木行治
kn-aut-sei=三木
kn-aut-mei=行治
aut-affil-num=2
ORCID=

en-aut-name=AbeT.
en-aut-sei=Abe
en-aut-mei=T.
kn-aut-name=阿部高知
kn-aut-sei=阿部
kn-aut-mei=高知
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山醫科大學細菌學教室

affil-num=2
en-affil=
kn-affil=岡山醫科大學細菌學教室

affil-num=3
en-affil=
kn-affil=岡山醫科大學細菌學教室
END

start-ver=1.4
cd-journal=joma
no-vol=100
cd-vols=
no-issue=
article-no=
start-page=53
end-page=59
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2011
dt-pub=20110201
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Mekong - Sight of Agriculture and Food -
kn-title=メコン　その農と食
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The author has had the opportunity to be engaged in field work in the Mekong River basin for forty years. In this report, the variety of agriculture and food of the Mekong River basin are described, based on that experience. The Mekong River is the biggest river in Southeast Asia. The source of the Mekong River is Tibet. The river flows through Chinese Yunnan, through Myanmar, Laos, Thailand, and Cambodia, forming a delta in Vietnam where it comes out into the sea. There live many people in that basin, and various agricultural elements of cultural complexity are found. Food culture also varies throughout this area. The author divided the whole basin into seven agriculture zones. The key words indicating the various forms of agriculture and food cultures recognized in the Mekong River basin are listed, illustrated by photographs. It has been said that Chinese ancient civilization was started from the Yellow River civilization. The Chang Jiang civilization now comes to the fore, which started before the Yellow River civilization. It is just now being admitted that the Chang Jiang civilization is equal to the four big civilizations of the world. It is just now being recognized that the Chang Jiarg civilization is on a par with the four big civilization of the word. According to the author’s supposition, not only Chang Jiang but also Mekong, Thanlwin and Huang river constituted a Asian Big civilization. The author predicts whether a time will come when the existence of a “Asian Big River civilization” will come to be explained.
en-copyright=
kn-copyright=

en-aut-name=KurodaToshiro
en-aut-sei=Kuroda
en-aut-mei=Toshiro
kn-aut-name=黒田俊郎
kn-aut-sei=黒田
kn-aut-mei=俊郎
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=応用植物科学コース
en-keyword=Asian Big River civilization
kn-keyword=Asian Big River civilization
en-keyword=Chang Jiang civilization
kn-keyword=Chang Jiang civilization
en-keyword=Chinese ancient civilization
kn-keyword=Chinese ancient civilization
en-keyword=Mekong
kn-keyword=Mekong
en-keyword=Southeast Asia
kn-keyword=Southeast Asia
END

start-ver=1.4
cd-journal=joma
no-vol=18
cd-vols=
no-issue=1
article-no=
start-page=1
end-page=28
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1986
dt-pub=19860621
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Rural Life In the Saku Districts of Nagano Prefec'ture in the Essay ; Chi kumagawa no Sketch (A Sketch of the Chikuma River) by Touson Simazaki
kn-title=島崎藤村 『千曲川のスケッチ』 における佐久の村々
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KandatsuHaruki
en-aut-sei=Kandatsu
en-aut-mei=Haruki
kn-aut-name=神立春樹
kn-aut-sei=神立
kn-aut-mei=春樹
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=
article-no=
start-page=11
end-page=14
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1953
dt-pub=195309
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=CHEMICAL STUDIES ON THERMAL ALGAE (I) ON INORGANIC CONSTUENTS (1)
kn-title=温泉植物成分の化学的研究（第1報）無機成分について（その1）
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The thermal algae which grew in the thermal water of Misasa Hot Springs, namely Mastigocladus laminosus Cohn (1), Phormidium ambiguum Gomont (2), Oscillatoria Cortiana (Menegh.) Gomont (3) and the fresh water alga which grew in the River Misasa, namely Rhizocolonium hieroglyphicum (4) were collected. The spectrographic analysis and quantitative chemical analanalysis of the ashes of the algae gave the following results : 1. All four algae contained Cu, Zn, Al, Pb, Mn, Mo besides the phisiological elements. 2. Two algae, (1) and (2) which grew in thermal water rarely mixed with the river water, contained Ti and considerable amount of Ge. 3. The highest content of Si and highest value of ash per cent were those of (1), and their values were 27.22 % and 26.44 %. 4. The highest content of Fe and Mn were those of (2), and their values were 17.80 %
and 3.27 %. 5. Great difference was not detected between the ratios of MgO/CaO of (1) and (2), and their values were 0.13 (1) and 0.14 (2).
en-copyright=
kn-copyright=

en-aut-name=UmemotoShunji
en-aut-sei=Umemoto
en-aut-mei=Shunji
kn-aut-name=梅本春次
kn-aut-sei=梅本
kn-aut-mei=春次
aut-affil-num=1
ORCID=

en-aut-name=MifuneMasaaki
en-aut-sei=Mifune
en-aut-mei=Masaaki
kn-aut-name=御船政明
kn-aut-sei=御船
kn-aut-mei=政明
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学温泉研究所化学部

affil-num=2
en-affil=
kn-affil=岡山大学温泉研究所化学部
END

start-ver=1.4
cd-journal=joma
no-vol=10
cd-vols=
no-issue=
article-no=
start-page=3
end-page=9
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1953
dt-pub=195303
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=CHEMICAL STUDIES ON THE SPRINGS IN SANYO DISTRICT (II)
kn-title=山陽地方の温泉の化学的研究（第2報）
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The author determined the radon contents of spring waters in the eastern part of Hiroshima Prefecture. In this district granite is distributed, and radon was found in most of the spring waters, although their content was variable. The results are as follows: 1) The highest radon content was 172 Mache (626×10(-10) Curie/?) of Harada Spring. Such a high mdon content is rare in the spring waters of Sanyo District. 2) Kanae Spring showed 73.2 Mache (266.4×10(-10) Curie/?) and the well waters near by it showed also comparatively high radon content. 3) The radon contents of the springs of Niwakayama, Immyoseki and No.1 of Hongo, and
Takasu water were 44.6 (162.3), 23.2 (84.5), 7.5 (27.3) and 14.7 (53.5) Mache (×10(-10) Curie/?) respectively. 4) The radon contents of rain, river and sea waters could not be determined by the I. M. fontactoscopeon account of its low values.
en-copyright=
kn-copyright=

en-aut-name=SugiharaTakeshi
en-aut-sei=Sugihara
en-aut-mei=Takeshi
kn-aut-name=杉原健
kn-aut-sei=杉原
kn-aut-mei=健
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学温泉研究所化学部
END

start-ver=1.4
cd-journal=joma
no-vol=9
cd-vols=
no-issue=
article-no=
start-page=43
end-page=48
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1953
dt-pub=195301
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=CHEMICAL STUDTES ON THE RIVER WATERS IN THE INFECTED LOCALITIES WITH KATAYAMA-DISEASE (II)
kn-title=片山病発生地域の地表水の化学的研究-2-
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In the previous report, one of the authors, T. Sugihara, discussed the results of chemical analysis of waters in the infected localites with Katayama-disease in the whole neighbourllood of Kannabe-cho, Fukayasu-distriict, Hiroshima-Prefecture. In this report, the authors discussed the results obtained in Yamanashi prefecture, and in the area drained by Chikugo River, and found the following facts: 1) The amount of KMnO(4) consumed and the copper content were high as in the previous report. 2) The calcium content was 7.3~22.2 mg/? in the river waters of this report, but it was 18.7~38.2 mg/? in the waters in the places of the previous paper. And in the previous report the author pointed out that the calcium content was fairly higher in the waters in the infected localities with Katayama disease than in the non-infected localities. But as the
calcium content was relatively lower this time than in the previous investigation, more research is intended to reach definite conclusion.
en-copyright=
kn-copyright=

en-aut-name=SugiharaTakeshi
en-aut-sei=Sugihara
en-aut-mei=Takeshi
kn-aut-name=杉原健
kn-aut-sei=杉原
kn-aut-mei=健
aut-affil-num=1
ORCID=

en-aut-name=AkashiTsutomu
en-aut-sei=Akashi
en-aut-mei=Tsutomu
kn-aut-name=明石務
kn-aut-sei=明石
kn-aut-mei=務
aut-affil-num=2
ORCID=

en-aut-name=YokoiShin
en-aut-sei=Yokoi
en-aut-mei=Shin
kn-aut-name=横井信
kn-aut-sei=横井
kn-aut-mei=信
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学?泉研究所化學部

affil-num=2
en-affil=
kn-affil=岡山大学?泉研究所化學部

affil-num=3
en-affil=
kn-affil=岡山大学?泉研究所化學部
END

start-ver=1.4
cd-journal=joma
no-vol=14
cd-vols=
no-issue=
article-no=
start-page=15
end-page=21
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1954
dt-pub=195403
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=EFFECT OF WATER LEVEL OF RIVER ON MINERAL SPRING
kn-title=河川の水位が温泉に及ぼす影響について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=From June 1953 to January 1954, the water temperature and amount of flow of a spring called IITanaka-no-Yu", Misasa Hot Springs, Tottori Prefecture, were observed continuously. It issues 10 metres north of the riverside of the River Misasa and a stream runs 3 metres south of it. The water level of the River and the stream were also observed. The water level of the stream have close connection with the water volume of rice-field which surround that spring, because it is a watercourse of irrigation to rice-field. It was found that when the amount of flow increased, the water temperature rose, namely there was a positive correlation between them, and the correlation coefficient was 0.952 (highly significant). The analysis of variance showed that the amount of flow would be affected by the water level of the River but would not be severely affected by that of the stream. The correlation between the amount of flow and the water level of the River was also positive and the correlation coefficient was 0.731 (highly significant). As a result of the analysis of variance, the computation of confidence limit and the analysis of covariance, in summer the averages of the amount of flow and the water temperature would be higher than those in autumn
and winter. This difference was seemed to be induced by the water level of the stream. The end of the observation, a dam had been constructed 20 metres down (west) the River and she rised, but the effect of it must be observed after this.
en-copyright=
kn-copyright=

en-aut-name=UmemotoShunji
en-aut-sei=Umemoto
en-aut-mei=Shunji
kn-aut-name=梅本春次
kn-aut-sei=梅本
kn-aut-mei=春次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学温泉研究所化学部
END

start-ver=1.4
cd-journal=joma
no-vol=20
cd-vols=
no-issue=
article-no=
start-page=55
end-page=61
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1958
dt-pub=195801
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=On the Underground Temperatures and Radioactivities at One Meter Depth in the Misasa Hot Spring Area
kn-title=三朝温泉地域の地下1m深さにおける温度分布並びに放射能について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Methods and Results of Measurements:-- A stick of steel was driven into the ground down to one meter depth, and a narrow pipe of aluminum or brass, closed at the upper end, was inserted and the hole covered by a board and earth. (See
Fig.3.) In Fig.2 the locations for the experiments are shown by x. Fig.1 gives the atmospheric temperatures at noon, October4-21,1955, when the experiments were carried out. About three hours after the above setting had been done, the gas in the hole was replaced by a bottle of water, and was collected, by driving sprayer for five minutes with apparatus as shown in Fig.5, in a can in which an autoradiographic plate was set. (See Fig.6.) The temperature in the hole was read by means of a maximum thermometer hung in the hole for ten minutes at one meter depth. Fig.7 shows the distribution of temperatures at one meter depth thus observed. Exactly twenty four hours after the above setting, the autoradiographic plate in the can (a quarter sized Fuji ET-2E plate, 15μ thick, for contact method) was developed. For developing, the plate was immersed in Ilford D-19 for fifteen minutes, then fixed with Fuji-fix for fifteen minutes, washed with running water for forty minutes, and dried. Then those autoradiographic plate was examined under the microscope of magnification ×280, to count the number of tracks of a-particles. The results obtained are shown in Fig.8. Underground Temperature Distribution:-- On the basis of the distribution of temperatures at one meter depth (Fig.7) and of other available boring data, the distribution of undergound temperatures is estimated as shown in Fig.9 (vertical section along the Misasa river).
en-copyright=
kn-copyright=

en-aut-name=SomaTokuzo
en-aut-sei=Soma
en-aut-mei=Tokuzo
kn-aut-name=相馬徳蔵
kn-aut-sei=相馬
kn-aut-mei=徳蔵
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学温泉研究所
END

start-ver=1.4
cd-journal=joma
no-vol=57
cd-vols=
no-issue=3
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2008
dt-pub=20080903
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=The evaluation of control measures against Schistosoma mekongi in Cambodia by a mathematical model
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>We constructed a mathematical model for the transmission of Schistosoma mekongi in Cambodia. The simulation of the model will be instrumental in planning schistosomiasis control measures. The model includes two definitive hosts, humans and dogs, as animal reservoirs. Dogs are recognized to play an important role in schistosomiasis transmission in Cambodia. For the purpose of dealing with age-specific prevalence and intensity of infection, the human population was classified into eight age categories in the model. To describe the seasonal fluctuation of the intermediate host population of S. mekongi, the "Post-Spate Survival" hypothesis was adopted for the population dynamics of Neotricula aperta present in the Mekong River. We carried out simulations to evaluate the effect of universal treatment (UT) and targeted mass treatment (TT) with praziquantel on the reduction in prevalence of S. mekongi. The simulations indicated that biyearly UT for 8 years or yearly TT for 5 years after three courses of yearly UT could reduce the prevalence to below 5% when a UT or TT coverage of 85% of inhabitants was achieved. The simulation suggested that the suppression of S. mekongi in Cambodia would be possible by UT or TT with a high coverage rate.</p>
en-copyright=
kn-copyright=

en-aut-name=HisakaneNaoto
en-aut-sei=Hisakane
en-aut-mei=Naoto
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=KirinokiMasashi
en-aut-sei=Kirinoki
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=ChigusaYuichi
en-aut-sei=Chigusa
en-aut-mei=Yuichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=SinuonMuth
en-aut-sei=Sinuon
en-aut-mei=Muth
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=SocheatDuong
en-aut-sei=Socheat
en-aut-mei=Duong
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=MatsudaHajime
en-aut-sei=Matsuda
en-aut-mei=Hajime
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=IshikawaHirofumi
en-aut-sei=Ishikawa
en-aut-mei=Hirofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Human Ecology, Graduate School of Environmental Science, Okayama University

affil-num=2
en-affil=
kn-affil=Center for Tropical Medicine and Parasitology, Dokkyo Medical University School of Medicine

affil-num=3
en-affil=
kn-affil=Center for Tropical Medicine and Parasitology, Dokkyo Medical University School of Medicine

affil-num=4
en-affil=
kn-affil=National Center for Parasitology, Entomology and Malaria Control, Ministry of Health

affil-num=5
en-affil=
kn-affil=National Center for Parasitology, Entomology and Malaria Control, Ministry of Health

affil-num=6
en-affil=
kn-affil=Institute of International Education and Research, Dokkyo Medical University School of Medicine

affil-num=7
en-affil=
kn-affil=Department of Human Ecology, Graduate School of Environmental Science, Okayama University,
en-keyword=Schistosoma mekongi
kn-keyword=Schistosoma mekongi
en-keyword=Cambodia
kn-keyword=Cambodia
en-keyword=mathematical model
kn-keyword=mathematical model
en-keyword=Neotricula aperta
kn-keyword=Neotricula aperta
en-keyword=Mekong River
kn-keyword=Mekong River
END

start-ver=1.4
cd-journal=joma
no-vol=68
cd-vols=
no-issue=2
article-no=
start-page=388
end-page=393
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2005
dt-pub=20051013
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>On-line preconcentration system for the selective, sensitive and simultaneous determination of chromium species was investigated. Dual minicolumns containing chelating resin were utilized for the speciation and preconcentration of Cr(III) and Cr(VI) in water samples. In this system, Cr(III) was collected on first column packed with iminodiacetate resin. Cr(VI) in the effluent from the first column was reduced to Cr(III), which was collected on the second column packed with iminodiacetate resin. Hydroxyammonium chloride was examined as a potential reducing agent for Cr(VI) to Cr(III).

The effects of pH, sample flow rate, column length, and interfering ions on the recoveries of Cr(III) were carefully studied. Five millilitres of a sample solution was introduced into the system. The collected species were then sequentially washed by 1 M ammonium acetate, eluted by 2 M nitric acid and measured by ICP-AES. The detection limit for Cr(III) and Cr(VI) was 0.08 and 0.15 mu g l-1, respectively. The total analysis time was about 9.4 min.

The developed method was successfully applied to the speciation of chromium in river, tap water and wastewater samples with satisfied results. </p>
en-copyright=
kn-copyright=

en-aut-name=SumidaTakashi
en-aut-sei=Sumida
en-aut-mei=Takashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=IkenoueTamami
en-aut-sei=Ikenoue
en-aut-mei=Tamami
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=HamadaKazuhide
en-aut-sei=Hamada
en-aut-mei=Kazuhide
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=SabarudinAkhmad
en-aut-sei=Sabarudin
en-aut-mei=Akhmad
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=5
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=6
ORCID=

affil-num=1
en-affil=
kn-affil=Industrial Technology Center of Kochi Prefecture

affil-num=2
en-affil=
kn-affil=Industrial Technology Center of Kochi Prefecture

affil-num=3
en-affil=
kn-affil=Industrial Technology Center of Kochi Prefecture

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=5
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=6
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=speciation
kn-keyword=speciation
en-keyword=chromium
kn-keyword=chromium
en-keyword=on-line preconcentration
kn-keyword=on-line preconcentration
en-keyword=ICP-AES
kn-keyword=ICP-AES
en-keyword=chelating resin
kn-keyword=chelating resin
END

start-ver=1.4
cd-journal=joma
no-vol=558
cd-vols=
no-issue=1-2
article-no=
start-page=246
end-page=253
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2006
dt-pub=20060203
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Synthesis of a chitosan-based chelating resin and its application to the selective concentration and ultratrace determination of silver in environmental water samples
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A novel chelating resin using chitosan as a base material, ethylenediamine-type chitosan, has been synthesized for the first time in the present study, and applied to the collection/concentration of ultratrace amounts of silver in environmental water samples. In the present study, ultratrace amounts of silver collected on the resin were eluted and determined by ICP-MS. The resin packed in a 1 mL mini column could adsorb silver selectively and quantitatively at a flow rate of 2 mL min(-1) in the wide pH range from 1 to 8, and silver adsorbed on the resin could be easily recovered by passing 1 M nitric acid as an eluent into the column. High adsorption capacity for silver at pH 5, 0.37 mmol mL(-1) of the resin, was achieved, and t(1/2) of the adsorption is less than 5 min. The effect of chloride on the collection of silver was examined by varying chloride concentrations from 10(-4) to 0.75 M; the results showed that the present resin can be used for the collection/concentration of ultratrace amounts of silver in natural waters, as well as seawater. To ensure the accuracy and the precision of the method, CASS-4 near shore seawater reference material from the NRCC has been analyzed. This is not a certified SRM for silver, but has been used for comparative silver analysis by several groups, who report very similar results to those that are reported here. The developed method using ethylenediamine-type chitosan resin gives 0.7 pg mL(-1) of the detection limit when 50-fold enrichment was used. The proposed method was successfully applied to the determination of silver in tap, river, and seawater samples.
en-copyright=
kn-copyright=

en-aut-name=KatarinaRosi Ketrin
en-aut-sei=Katarina
en-aut-mei=Rosi Ketrin
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=TakayanagiToshio
en-aut-sei=Takayanagi
en-aut-mei=Toshio
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=Chelating resin
kn-keyword=Chelating resin
en-keyword=Chitosan
kn-keyword=Chitosan
en-keyword=Determination of silver
kn-keyword=Determination of silver
en-keyword=Environmental water samples
kn-keyword=Environmental water samples
en-keyword=ICP-MS
kn-keyword=ICP-MS
END

start-ver=1.4
cd-journal=joma
no-vol=581
cd-vols=
no-issue=2
article-no=
start-page=214
end-page=220
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20070109
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Functionalization of chitosan with 3,4-dihydroxybenzoic acid for the adsorption/collection of uranium in water samples and its determination by inductively coupled plasma-mass spectrometry
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A chitosan resin derivatized with 3,4-dihydroxybenzoic acid moiety (CCTS-DHBA resin) was newly synthesized for the collection/concentration of trace uranium by using cross-linked chitosan (CCTS) as base material, and the adsorption behavior of uranium as well as 60 elements on the resin was examined by passing the sample solutions through a mini-column packed with the resin. After the elution of the collected elements on the resin with 1M HNO3, the eluates were measured by inductively coupled plasma-mass spectrometry (ICP-MS). The CCTS-DHBA resin can adsorb several metal cations and several oxoanionic elements at appropriate pH. Among these metal ions, uranium shows an excellent adsorption behavior on this resin. Uranium as UO22+ species can be adsorbed on the resin by chelating mechanism with adsorption capacity of 330 mg g(-1) resin. Through the column treatment, the complete removal of large amounts of alkali and alkaline earth matrices without any loss of adsorption efficiency over prolonged usage were achieved with this resin. The CCTS-DHBA resin was applied to the adsorption/collection of uranium in tap water, river water and seawater samples with satisfactory results. The validation of the proposed method was carried out by analyzing uranium in the standard reference materials of SLRS-4, CASS-4, and NASS-5 after passing through the CCTS-DHBA resin, and the results showed good agreement with the certified values.
en-copyright=
kn-copyright=

en-aut-name=SabarudinAkhmad
en-aut-sei=Sabarudin
en-aut-mei=Akhmad
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=TakayanagiToshio
en-aut-sei=Takayanagi
en-aut-mei=Toshio
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=HakimLukman
en-aut-sei=Hakim
en-aut-mei=Lukman
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=OshitaKoji
en-aut-sei=Oshita
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=GaoYun Hua
en-aut-sei=Gao
en-aut-mei=Yun Hua
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=7
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=5
en-affil=
kn-affil=Department of International Conservation Studies, Faculty of International and Industrial Studies, Kibi International University

affil-num=6
en-affil=
kn-affil=Technical Institute of Physics and Chemistry, Chinese Academy of Sciences

affil-num=7
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=Chitosan resin
kn-keyword=Chitosan resin
en-keyword=3,4-dihydroxybenzoic acid
kn-keyword=3,4-dihydroxybenzoic acid
en-keyword=Uranium
kn-keyword=Uranium
en-keyword=Adsorption
kn-keyword=Adsorption
en-keyword=Water
kn-keyword=Water
en-keyword=Inductively coupled plasma-mass spectrometry
kn-keyword=Inductively coupled plasma-mass spectrometry
END

start-ver=1.4
cd-journal=joma
no-vol=588
cd-vols=
no-issue=1
article-no=
start-page=73
end-page=81
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20070404
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Synthesis of novel chitosan resin derivatized with serine diacetic acid moiety and its application to on-line collection/concentration of trace elements and their determination using inductively coupled plasma-atomic emission spectrometry
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A novel chelating resin functionalized with serine diacetic acid moiety was synthesized by using chitosan as base material, and applied to the collection/concentration of trace elements in environmental water samples, followed by the determination using inductively coupled plasma-atomic emission spectrometer (ICP-AES). The synthesized resin, crosslinked chitosan serine diacetic acid (CCTS-SDA), showed good adsorption behavior toward trace amounts of Cd, Pb, Cu, Ni, V, Ga, Sc, In, and Th in a wide pH range. Additionally, rare earth elements also can be retained on the resin at neutral pH region. The adsorbed elements can be easily eluted with 1 mol L-1 of nitric acid, and their recoveries were found to be 90-100%. The CCTS-SDA was packed in a mini-column, which was then installed in a cornputer-controlled auto-pretreatment system (Auto-Pret System) for on-line trace elements collection and determination with ICP-AES. Experimental parameters which related to the improvement of sensitivity and reproducibility were optimized. The limits of detection (LOD) for 13 elements were found to be in sub-ppb level. The proposed method with CCTS-SDA resin was successfully applied to the determination of trace elements in river water samples. The method was validated by determining a certified reference material of river water, SLRS-4.
en-copyright=
kn-copyright=

en-aut-name=LukmanHakim
en-aut-sei=Lukman
en-aut-mei=Hakim
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=SabarudinAkhmad
en-aut-sei=Sabarudin
en-aut-mei=Akhmad
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=chelating resin
kn-keyword=chelating resin
en-keyword=chitosan
kn-keyword=chitosan
en-keyword=serine diacetic acid moiety
kn-keyword=serine diacetic acid moiety
en-keyword=trace elements
kn-keyword=trace elements
en-keyword=on-line pretreatment
kn-keyword=on-line pretreatment
en-keyword=computer control
kn-keyword=computer control
en-keyword=inductively coupled plasma-atomic emission spectrometry
kn-keyword=inductively coupled plasma-atomic emission spectrometry
en-keyword=SLRS-4
kn-keyword=SLRS-4
END

start-ver=1.4
cd-journal=joma
no-vol=542
cd-vols=
no-issue=2
article-no=
start-page=207
end-page=215
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2005
dt-pub=20050629
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Synthesis of chitosan resin possessing 3,4-diamino benzoic acid moiety for the collection/concentration of arsenic and selenium in water samples and their measurement by inductively coupled plasma-mass spectrometry
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A chitosan resin functionalized with 3,4-diamino benzoic acid (CCTS-DBA resin) was newly synthesized by using a cross-linked chitosan (CCTS) as base material. The adsorption behavior of trace amounts of elements on the CCTS-DBA resin was examined by the pretreatment with a mini-column and measurement of the elements by inductively coupled plasma-Mass spectrometry (ICP-MS). Arsenic(V) could be retained on the CCTS-DBA resin at pH 3 as an oxoanion of H(2)ASO(4)(-). Selenium(VI) is strongly adsorbed at pH 2 and pH 3 as an oxoanion of SeO42-. while selenium(IV) as HSeO3- is adsorbed on the resin at pH 3. The sorption capacities are 82, 64, and 88 mg g(-1) resin for As(V), Se(IV), and Se(VI), respectively. The effect of common anions and cations on the adsorption of As(V), Se(IV), and Se(VI) were studied; there was no interference from such anionic matrices as chloride, sulfate, phosphate, and nitrate up to 20 ppm, as well as from such artificial river water matrices as Na, K, Mg, and Ca after passing samples through the mini-column containing the resin. The CCTS-DBA resin was applied to the collection of arsenic and selenium species in bottled drinking water, tap water, and river water.
en-copyright=
kn-copyright=

en-aut-name=SabarudinAkhmad
en-aut-sei=Sabarudin
en-aut-mei=Akhmad
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OshitaKoji
en-aut-sei=Oshita
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=Cross-linked chitosan
kn-keyword=Cross-linked chitosan
en-keyword=3,4-diamino benzoic acid
kn-keyword=3,4-diamino benzoic acid
en-keyword=Arsenic
kn-keyword=Arsenic
en-keyword=Selenium
kn-keyword=Selenium
en-keyword=ICP-MS
kn-keyword=ICP-MS
END

start-ver=1.4
cd-journal=joma
no-vol=72
cd-vols=
no-issue=5
article-no=
start-page=1675
end-page=1680
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20070201
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Flow-Injection Spectrofluorometric Determination of Trace Amounts of Formaldehyde in Water after Derivatization with Acetoacetanilide
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>A novel fluorophotometric method for formaldehyde determination in environmental waters was developed: the method does not require any enrichment procedures. A flow-injection analysis method for the spectrofluorometric determination of formaldehyde in waters, which is based on the reaction of formaldehyde with acetoacetanilide and ammonia, is proposed. The proposed method shows a good linearity from 0.50 to 40 x 10(-7) M, and the limit of detection (LOD) of 3 x 10(-9) M (0.09 ppb) is achievable. The sample throughput is 15 h(-1). One of the main advantages in the proposed method is that the reaction can be carried out at room temperature without any heating system. The effect of various interferences possibly present in the real water samples was investigated. Most cations and anions, as well as organic compounds, do not interfere with the determination of formaldehyde in environmental water samples. The proposed method is very simple, rapid, less expensive, and highly sensitive, and can be applied to the environmental water samples, such as rain, tap water and river water, at low concentration levels without any enrichment procedure. </p>
en-copyright=
kn-copyright=

en-aut-name=LiQiong
en-aut-sei=Li
en-aut-mei=Qiong
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=Spectrofluorometric
kn-keyword=Spectrofluorometric
en-keyword=Water samples
kn-keyword=Water samples
en-keyword=Flow-injection
kn-keyword=Flow-injection
en-keyword=Formaldehyde determination
kn-keyword=Formaldehyde determination
en-keyword=Acetoacetanilide
kn-keyword=Acetoacetanilide
END

start-ver=1.4
cd-journal=joma
no-vol=73
cd-vols=
no-issue=5
article-no=
start-page=831
end-page=837
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20070522
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Functionalization of chitosan with 3-nitro-4-amino benzoic acid moiety and its application to the collection/concentration of molybdenum in environmental water samples
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>A chitosan resin functionalized with 3-nitro-4-amino benzoic acid moiety (CCTS-NABA resin) was newly synthesized for the collection/concentration of trace molybdenum by using cross-linked chitosan (CCTS) as base material. The carboxyl group of the moiety was chemically attached to amino group of cross-linked chitosan through amide bond formation. The adsorption behavior of molybdenum as well as other 60 elements on the resin was examined by passing the sample solutions through a mini-column packed with the resin. After the elution of the elements collected on the resin with 1 M HNO3, the eluates were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS) and atomic emission spectrometry (ICP-AES).
<br />
The CCTS-NABA resin can adsorb several metal ions, such as vanadium, gallium, arsenic, selenium, silver, bismuth, thorium, tungsten, tin, tellurium, copper, and molybdenum at appropriate pHs. Among these metal ions, only molybdenum could be adsorbed almost completely on the resin at acidic regions. An excellent selectivity toward molybdenum could be obtained at pH 3-4. The adsorption capacity of CCTS-NABA resin for Mo(VI) was 380 mg g(-1) resin. Through the column pretreatment, alkali and alkaline earth metals in river water and seawater samples were successfully removed.
<br />
The CCTS-NABA resin was applied to the adsorption/collection of molybdenum in river water and seawater samples. The concentrations of molybdenum in river water samples were found in the range of 0.84 and 0.95 ppb (ng g(-1)), whereas molybdenum in seawater was about 9 ppb. The validation of the proposed method was carried out by determining molybdenum in the certified reference materials of SLRS-4, CASS-4, and NASS-5 after passing through the CCTS-NABA resin; the results showed good agreement with the certified-values. </p>
en-copyright=
kn-copyright=

en-aut-name=SabarudinAkhmad
en-aut-sei=Sabarudin
en-aut-mei=Akhmad
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=NoguchiOsamu
en-aut-sei=Noguchi
en-aut-mei=Osamu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Brawijaya University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=chitosan resin
kn-keyword=chitosan resin
en-keyword=3-nitro-4-amino benzoic acid
kn-keyword=3-nitro-4-amino benzoic acid
en-keyword=molybdenum
kn-keyword=molybdenum
en-keyword=adsorption behavior
kn-keyword=adsorption behavior
en-keyword=water and seawater
kn-keyword=water and seawater
en-keyword=ICP-MS
kn-keyword=ICP-MS
en-keyword=ICP-AES
kn-keyword=ICP-AES
en-keyword=certified reference materials
kn-keyword=certified reference materials
END

start-ver=1.4
cd-journal=joma
no-vol=72
cd-vols=
no-issue=5
article-no=
start-page=1609
end-page=1617
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20070118
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Sequential-injection on-line preconcentration using chitosan resin functionalized with 2-amino-5-hydroxy benzoic acid for the determination of trace elements in environmental water samples by inductively coupled plasma-atomic emission spectrometry
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>A new chelating resin using chitosan as a base material was synthesized. Functional moiety of 2-amino-5-hydroxy benzoic acid (AHBA) was chemically bonded to the amino group of cross-linked chitosan (CCTS) through the arm of chloromethyloxirane (CCTS-AHBA resin). Several elements, such as Ag, Be, Cd, Co, Cu, Ni, Ph, U, V, and rare earth elements (REEs), could be adsorbed on the resin. To use the resin for on-line pretreatment, the resin was packed in a mini-column and installed into a sequential-injection/automated pretreatment system (Auto-Pret System) coupled with inductively coupled plasma-atomic emission spectrometry (ICP-AES). The sequential-injection/automated pretreatment system was a laboratory-assembled, and the program was written using Visual Basic software. This system can provide easy operation procedures, less reagent consumption, as well as less waste production.

Experimental variables considered as effective factors in the improvement sensitivity, such as an eluent concentration, a sample and an eluent flow rate, pH of samples, and air-sandwiched eluent were carefully optimized. The proposed system provides excellent on-line collection efficiency, as well as high concentration factors of analytes in water samples, which results in highly sensitive detection of ultra-trace and trace analysis. Under the optimal conditions, the detection limits of 24 elements examined are in the range from ppt to sub-ppb levels. The proposed method was validated by using the standard reference material of a river water, SLRS-4, and the applicability was further demonstrated to the on-line collection/concentration of trace elements, such as Ag, Be, Cd, Co, Cu, Ni, Ph, U, V, and REEs in water samples.</p>
en-copyright=
kn-copyright=

en-aut-name=SabarudinAkhmad
en-aut-sei=Sabarudin
en-aut-mei=Akhmad
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=LenghorNarong
en-aut-sei=Lenghor
en-aut-mei=Narong
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=HakimLukman
en-aut-sei=Hakim
en-aut-mei=Lukman
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=TakayanagiToshio
en-aut-sei=Takayanagi
en-aut-mei=Toshio
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=GaoYun-Hua
en-aut-sei=Gao
en-aut-mei=Yun-Hua
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=7
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=5
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=6
en-affil=
kn-affil=Technical Institute of Physics and Chemistry, Chinese Academy of Sciences (CAS)

affil-num=7
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=sequential-injection
kn-keyword=sequential-injection
en-keyword=on-line preconcentration
kn-keyword=on-line preconcentration
en-keyword=trace elements
kn-keyword=trace elements
en-keyword=ICP-AES
kn-keyword=ICP-AES
en-keyword=chitosan resin
kn-keyword=chitosan resin
END

start-ver=1.4
cd-journal=joma
no-vol=23
cd-vols=
no-issue=10
article-no=
start-page=1203
end-page=1208
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20071010
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Synthesis of cross-linked chitosan modified with the glycine moiety for the collection/concentration of bismuth in aquatic samples for ICP-MS determination
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>A chelating resin, cross-linked chitosan modified with the glycine moiety (glycine-type chitosan resin), was developed for the collection and concentration of bismuth in aquatic samples for ICP-MS measurements. The adsorption behavior of bismuth and 55 elements on glycine-type chitosan resin was systematically examined by passing a sample solution containing 56 elements through a mini-column packed with the resin (wet volume; I ml). After eluting the elements adsorbed on the resin with nitric acid, the eluates were measured by ICP-MS. The glycine-type chitosan resin could adsorb several cations by a chelating mechanism and several oxoanions by an anion-exchange mechanism. Especially, the resin could adsorb almost 100% Bi(III) over a wide pH region from pH 2 to 6. Bismuth could be strongly adsorbed at pH 3, and eluted quantitatively with 10 ml of 3 M nitric acid. A column pretreatment method with the glycine-type chitosan resin was used prior to removal of high concentrations of matrices in a seawater sample and the preconcentration of trace bismuth in river water samples for ICP-MS measurements. The column pretreatment method was also applied to the determination of bismuth in real samples by ICP-MS. The LOD of bismuth was 0.1 pg ml(-1) by 10-fold column preconcentration for ICP-MS measurements. The analytical results for bismuth in sea and river water samples by ICP-MS were 22.9 +/- 0.5 pg ml(-1) (RSD, 2.2%) and 2.08 +/- 0.05 pg ml(-1) (RSD, 2.4%), respectively.</p>
en-copyright=
kn-copyright=

en-aut-name=OshitaKoji
en-aut-sei=Oshita
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=NoguchiOsamu
en-aut-sei=Noguchi
en-aut-mei=Osamu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of International Conservation Studies for Cultural Properties, Faculty of Cultural Properties, Kibi International University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
END

start-ver=1.4
cd-journal=joma
no-vol=39
cd-vols=
no-issue=6
article-no=
start-page=669
end-page=682
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2006
dt-pub=20061201
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Automated online preconcentration system for the determination of trace amounts of lead using Pb-selective resin and inductively coupled plasma-atomic emission spectrometry
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>An automated sequential-injection online preconcentration system was developed for the determination of lead by inductively coupled plasma - atomic emission spectrometry (ICP-AES). The preconcentration of lead was performed with a minicolumn containing a lead-selective resin, Analig Pb-01, which was installed between a selection and a switching valve. In an acidic condition ( pH 1), lead could be adsorbed on the resin. The concentrated lead was afterward eluted with 25 mu L of 0.06 M nitrilotriacetic acid (NTA) solution ( pH 9) and was subsequently transported into the nebulizer of ICP-AES for quantification. The selectivity of the resin toward lead was examined using a solution containing a mixture of 61 elements. When a sample volume of 5 mL was used, the quantitative collection of lead ( &#62;= 97%) was achieved, along with an enrichment factor of 19, a sampling frequency of 12 samples hr(-1), a detection limit of 70 pg mL(-1), and a lowest quantification limit of 100 pg mL(-1). The linear dynamic range was 0.1 to 5 ng mL(-1), and the relative standard deviation (n = 9) was 0.5% at a 5 ng mL(-1) Pb level. The detection limit of 30 pg mL(-1) and lowest quantification limit of 50 pg mL(-1) could be achieved when 10 mL of sample volume was used. The accuracy of the proposed method was validated by determining lead in the standard reference material of river water (SLRS-4), and its applicability to the determination of lead in environmental river water samples was demonstrated.</p>

en-copyright=
kn-copyright=

en-aut-name=SabarudinA.
en-aut-sei=Sabarudin
en-aut-mei=A.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=LenghorN.
en-aut-sei=Lenghor
en-aut-mei=N.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=LipingY.
en-aut-sei=Liping
en-aut-mei=Y.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=FurushoY.
en-aut-sei=Furusho
en-aut-mei=Y.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Center Laboratory, Faculty of Science, JiangXi Agricultural University

affil-num=4
en-affil=
kn-affil=GL Sciences, Inc.

affil-num=5
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=nline prdetermination of lead
kn-keyword=nline prdetermination of lead
en-keyword=ICP-AES
kn-keyword=ICP-AES
en-keyword=oeconcentration
kn-keyword=oeconcentration
en-keyword=Pb-selective resin
kn-keyword=Pb-selective resin
en-keyword=sequential injection
kn-keyword=sequential injection
END

start-ver=1.4
cd-journal=joma
no-vol=66
cd-vols=
no-issue=1
article-no=
start-page=136
end-page=144
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2004
dt-pub=20041208
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Synthesis of cross-linked chitosan possessing N-methyl-D-glucamine moiety (CCTS-NMDG) for adsorption/concentration of boron in water samples and its accurate measurement by ICP-MS and ICP-AES
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>A chitosan resin derivatized with N-methyl-(D)-glucamine (CCTS-NMDG) was synthesized by using a cross-linked chitosan (CCTS) as base material. The N-methyl-D-glucamine (NMDG) moiety was attached to the amino group of CCTS through the arm of chloromethyloxirane. The adsorption behavior of 59 elements on the synthesized resin was systematically examined by using the resin packed in a mini-column, passing water samples through it and measuring the adsorbed elements in eluates by ICP-MS. The CCTS-NMDG resin shows high ability in boron sorption with the capacity of 0.61 mmol ml(-1) (= 2.1 mmol g(-1)). The sorption kinetics of this resin was faster than that of the commercially available resins. Other advantages of the synthesized resin are: (1) quantitative collection of boron at neutral pH regions; (2) complete removal of large amounts of matrices; (3) no loss of efficiency over prolonged usage; (4) effective collection of boron in wide range concentration using a mini column containing 1 ml resin; (5) complete elution of boron with 1 mol 1(-1) nitric acid. The resin was applied to the collection/concentration of boron in water samples. Boron in tap water and river water was found to be in the range of 6-8 mu g 1(-1). The limit of detection (LOD) of boron after pretreatment with CCTS-NMDG resin and measurement by ICP-MS was 0.07 mu g 1(-1) and the limit of quantification (LOQ) was 0. 14 mu g 1(-1) when the volume of each sample and eluent was 10 ml.</p>
en-copyright=
kn-copyright=

en-aut-name=SabarudinAkhmad
en-aut-sei=Sabarudin
en-aut-mei=Akhmad
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OshitaKoji
en-aut-sei=Oshita
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=chitosan resin
kn-keyword=chitosan resin
en-keyword=N-methyl-D-glucamine
kn-keyword=N-methyl-D-glucamine
en-keyword=boron
kn-keyword=boron
en-keyword=adsorption
kn-keyword=adsorption
en-keyword=ICP-MS/AES
kn-keyword=ICP-MS/AES
END

start-ver=1.4
cd-journal=joma
no-vol=159
cd-vols=
no-issue=3-4
article-no=
start-page=341
end-page=348
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20070426
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Application of chitosan functionalized with 3,4-dihydroxy benzoic acid moiety for on-line preconcentration and determination of trace elements in water samples
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>Chitosan resin functionalized with 3,4-dihydroxy benzoic acid (CCTS-DHBA resin) was used as a packing material for flow injection (FI) on-line mini-column preconcentration in combination with inductively coupled plasma-atomic emission spectrometry (ICP-AES) for the determination of trace elements such as silver, bismuth, copper, gallium, indium, molybdenum, nickel, uranium, and vanadium in environmental waters. A 5-mL aliquot of sample (pH 5.5) was introduced to the minicolumn for the adsorption/preconcentration of the metal ions, and the collected analytes on the mini-column were eluted with 2 M HNO3, and the eluates was subsequently transported via direct injection to the nebulizer of ICP-AES for quantification. The parameters affecting on the sensitivity, such as sample pH, sample flow rate, eluent concentration, and eluent flow rate, were carefully examined. Alkali and alkaline earth metal ions commonly existing in river water and seawater did not affect the analysis of metals. Under the optimum conditions, the method allowed the determination of metal ions with detection limits of 0.08 ng mL(-1) (Ag), 0.9 ng mL(-1) (Bi), 0.07 ng mL(-1) (Cu), 0.9 ng mL(-1) (Ga), 0.9 ng mL(-1) (In), 0.08 ng mL(-1) (Mo), 0.09 ng mL(-1) (Ni), 0.9 ng mL(-1) (U), and 0.08 ng mL(-1) (V). By using 5 mL of sample solution, the enrichment factor and collection efficiency were 8-12 fold and 96-102%, respectively, whereas the sample throughput was 7 samples/hour. The method was validated by determining metal ions in certified reference material of river water (SLRS-4) and nearshore seawater (CASS-4), and its applicability was further demonstrated to river water and seawater samples.</p>
en-copyright=
kn-copyright=

en-aut-name=SabarudinAkhmad
en-aut-sei=Sabarudin
en-aut-mei=Akhmad
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=NoguchiOsamu
en-aut-sei=Noguchi
en-aut-mei=Osamu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=HiguchiKeiro
en-aut-sei=Higuchi
en-aut-mei=Keiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=5
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=FIA Instruments Division, Ogawa and Co.

affil-num=5
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=flow injection
kn-keyword=flow injection
en-keyword=chitosan resin
kn-keyword=chitosan resin
en-keyword=on-line preconcentration
kn-keyword=on-line preconcentration
en-keyword=3
kn-keyword=3
en-keyword=4-dihydroxy benzoic acid
kn-keyword=4-dihydroxy benzoic acid
en-keyword=ICP-AES
kn-keyword=ICP-AES
END

start-ver=1.4
cd-journal=joma
no-vol=62
cd-vols=
no-issue=6
article-no=
start-page=363
end-page=371
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2008
dt-pub=200812
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Toxin Production by Aeromonas sobria in Natural Environments: River Water vs. Seawater
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>Aeromonas are water-borne pathogens. They are halotolerant, which means that they can survive in environments whose salt content corresponds to that of seawater (3.0% NaCl). However, the presence of Aeromonas in seawater is extremely rare compared with that in river water. In this study, we tested the ability of Aeromonas sobria to produce toxins in river water and seawater. First, we cultured
A. sobria on skim milk agar plates supplemented with either river water (SARW) or seawater (SASW). The bacteria grew on both plates. A clear zone around the bacteria was generated in SARW. However, such a zone was not observed in SASW, suggesting that proteases were not generated in SASW. Subsequently, we cultured A. sobria in a nutrient broth supplemented with either river water (NRW) or with seawater (NSW), and examined the protease activity of their culture supernatants. The protease activity of the culture supernatant from NSW was extremely low compared to that from NRW. The immunoblotting analysis showed that serine protease (ASP) was not produced by the culture
in NSW. By contrast, aerolysin-like hemolysin was produced in all conditions examined in this study. This indicates that the salinity of water is deeply involved in the production of ASP by A. sobria.</p>
en-copyright=
kn-copyright=

en-aut-name=KhanRasel
en-aut-sei=Khan
en-aut-mei=Rasel
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=TakahashiEizo
en-aut-sei=Takahashi
en-aut-mei=Eizo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=NakuraHironori
en-aut-sei=Nakura
en-aut-mei=Hironori
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=AnsaruzzamanMohammad
en-aut-sei=Ansaruzzaman
en-aut-mei=Mohammad
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=BanikSukalyani
en-aut-sei=Banik
en-aut-mei=Sukalyani
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=RamamurthyThandavarayan
en-aut-sei=Ramamurthy
en-aut-mei=Thandavarayan
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=OkamotoKeinosuke
en-aut-sei=Okamoto
en-aut-mei=Keinosuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

affil-num=1
en-affil=
kn-affil=Laboratory of Protein Function, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences

affil-num=2
en-affil=
kn-affil=Laboratory of Protein Function, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences

affil-num=3
en-affil=
kn-affil=Laboratory of Protein Function, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences

affil-num=4
en-affil=
kn-affil=Laboratory Sciences Division, ICDDR, B (International Centre for Diarrhoeal Diseases Research, Bangladesh), Centre for Health and Population Research

affil-num=5
en-affil=
kn-affil=Laboratory of Protein Function, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences

affil-num=6
en-affil=
kn-affil=Collaborative Research Center of Okayama University for Infectious Diseases in India

affil-num=7
en-affil=
kn-affil=Laboratory of Protein Function, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
en-keyword=Aeromonas
kn-keyword=Aeromonas
en-keyword=water
kn-keyword=water
en-keyword=toxin
kn-keyword=toxin
en-keyword=salinity
kn-keyword=salinity
END

start-ver=1.4
cd-journal=joma
no-vol=49
cd-vols=
no-issue=
article-no=
start-page=7
end-page=13
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1979
dt-pub=19790925
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Ammonium content of Archean rocks of the Superior Province
kn-title=始生代スペリオル区の岩石のアンモニウム
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Ammonium contents were determined for clastic sediments and associated volcanic rocks of the Kirkland Lake area, Abitibi greenstone- granite belt and metamorphic, migmatitic and granitic rocks of the Ear Falls-Dryden area, English River gneiss-granite belt. The NH(4) centents of Archean volcanic rocks (2700~2710m.y.) are very low (0~6 ppm) and immature argillites have also low contents of NH(4) (27~43ppm). On the other hand, a black shale from the Timiskaming Group (2100m.y.) are rich in graphite and pyrite and contain much NH4 (130ppm), providing a firm evidence of relatively abundant presence of an Archean biota compared with a sparcity of morphological record of Archean fossils. The NH(4) content of the rock mentioned above is about a third of those of the upper Proterozoic sediments and it remains to be established whether it reflects the abrupt break in the evolution of life near the Archean-Proterozoic boundary or not. A considerable amount of NH(4) is inherited by highly metamorphic pelitic gneisses and there may be a possibility for indirect prospection of early life by a study of NH(4) in highly metamorphic rocks of the early Archean. It was also found that the gneissic granitoid has much higher content of NH(4) than the post? kinematic massive granitoid.
en-copyright=
kn-copyright=

en-aut-name=HonmaHiroji
en-aut-sei=Honma
en-aut-mei=Hiroji
kn-aut-name=本間弘次
kn-aut-sei=本間
kn-aut-mei=弘次
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=SchwarczHenry P.
kn-aut-sei=Schwarcz
kn-aut-mei=Henry P.
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学温泉研究所地質学部門

affil-num=2
en-affil=
kn-affil=Department of Geology, Mc Master University
END

start-ver=1.4
cd-journal=joma
no-vol=17
cd-vols=
no-issue=
article-no=
start-page=49
end-page=55
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1995
dt-pub=19951220
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Determination of Inorganic Anions in Environmental Samples by Capillary Electrophoresis
kn-title=キャピラリー電気泳動法による環境試料中の無機陰イオンの定量
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Several inorganic anions in environmental water samples, such as river, rain, tap, and waste waters, were determined by capillary electrophoresis with indirect photometric UV detection. In this study, the use of a polymer coated silica capillary and an anionic organic photometric reagent realized a stable baseline and short analytical time. Nine kinds of anions, Cl(-), Br(-), NO(3)(-), SO(4)(2-), C(2)O(4)(2-), ClO(4)(-), F(-), HPO(4)(2-), and HCO(3)(-), were well separated and detected within 12 minutes. Calibration graphs for the anions showed a good linearity in the range of 0 to 4x10(-4) mol dm(-3). Detection limits of the anions were 2x10(-6) mol dm(-3) (HPO(4)(2-)) to 4x10(-5) mol dm(-3) (NO(2)(-)). Anions in river water (Zasu river) and waste water (Okayama University, North district) were measured over 5 days. The waste water contained various kinds of anions, at high concentrations with its large variation, when compared with the river water. The proposed method offers a simple, rapid, and accurate analysis of anions in water samples.
en-copyright=
kn-copyright=

en-aut-name=TakayanagiToshio
en-aut-sei=Takayanagi
en-aut-mei=Toshio
kn-aut-name=高柳俊夫
kn-aut-sei=高柳
kn-aut-mei=俊夫
aut-affil-num=1
ORCID=

en-aut-name=WadaEiko
en-aut-sei=Wada
en-aut-mei=Eiko
kn-aut-name=和田栄子
kn-aut-sei=和田
kn-aut-mei=栄子
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=3
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=4
en-affil=
kn-affil=岡山大学理学部化学科
END

start-ver=1.4
cd-journal=joma
no-vol=21
cd-vols=
no-issue=
article-no=
start-page=4
end-page=10
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1999
dt-pub=199908
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Determination of trace metals in environmental water samples by inductively coupled plasma - mass spectrometry (ICP-MS)
kn-title=誘導結合プラズマ―質量分析法による環境水中の微量金属の定量
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Trace metals in water samples, such as tap water, river water, and sea water, were determined by inductively coupled plasma-mass spectrometry (ICP-MS). ICP-MS has sufficient sensitivity to detect even below the concentrations of ppt level, and therefore the samples were not pretreated with a concentration column. Practical samples were diluted by lo-fold with ultrapure water and measured directly by ICP-MS. The measuring time of one sample was 2.5 min, and the data for 30 elements were obtained simultaneously. The concentrations of heavy metals, such as Cr, Mn, Co, Ni, Cu, Zn, As, Cd, Sb, and Pb, in the water samples were in the ranges of 0.05~82ng/ml. Zasu river and Sibukawa (sea water) contained various kinds of metals, and the concentration ranges were spread in a wide range; for example, Mg was 25700 ppb and In was 2 ppt. ICP-MS is found to be a useful and a powerful instrument for trace amounts of elements, and can be applied satisfactorily to the environmental water analysis.
en-copyright=
kn-copyright=

en-aut-name=LeeKyue-Hyung
en-aut-sei=Lee
en-aut-mei=Kyue-Hyung
kn-aut-name=李啓?
kn-aut-sei=李
kn-aut-mei=啓?
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=TakayanagiToshio
en-aut-sei=Takayanagi
en-aut-mei=Toshio
kn-aut-name=高柳俊夫
kn-aut-sei=高柳
kn-aut-mei=俊夫
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=3
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=4
en-affil=
kn-affil=岡山大学理学部化学科
END

start-ver=1.4
cd-journal=joma
no-vol=19
cd-vols=
no-issue=
article-no=
start-page=23
end-page=27
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2002
dt-pub=200209
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Evaluations of River-eco charcoal on the blood routine
and blood biochemical values in rats
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=KurabayashiYuzuru
en-aut-sei=Kurabayashi
en-aut-mei=Yuzuru
kn-aut-name=倉林譲
kn-aut-sei=倉林
kn-aut-mei=譲
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=TangJ.M.
kn-aut-sei=Tang
kn-aut-mei=J.M.
aut-affil-num=2
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=YangG.J.
kn-aut-sei=Yang
kn-aut-mei=G.J.
aut-affil-num=3
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=LiuE.Q.
kn-aut-sei=Liu
kn-aut-mei=E.Q.
aut-affil-num=4
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=YamaguchiYasuyuki
kn-aut-sei=Yamaguchi
kn-aut-mei=Yasuyuki
aut-affil-num=5
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=YamadaSumio
kn-aut-sei=Yamada
kn-aut-mei=Sumio
aut-affil-num=6
ORCID=

affil-num=1
en-affil=
kn-affil=Okayama University Medical School

affil-num=2
en-affil=
kn-affil=Shanghai Transgenic Research Center

affil-num=3
en-affil=
kn-affil=Beijing University Medical College

affil-num=4
en-affil=
kn-affil=Xi-an Jiao-tong University Medical College

affil-num=5
en-affil=
kn-affil=Kawasaki Seitetsu Co. Ltd.

affil-num=6
en-affil=
kn-affil=Kawasaki Seitetsu Co. Ltd.
END

start-ver=1.4
cd-journal=joma
no-vol=2
cd-vols=
no-issue=5
article-no=
start-page=493
end-page=494
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1986
dt-pub=1986
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Determination of Potassium in River Water by Solvent Extraction- Flow Injection Analysis
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=IwachidoTadashi
en-aut-sei=Iwachido
en-aut-mei=Tadashi
kn-aut-name=岩知道正
kn-aut-sei=岩知道
kn-aut-mei=正
aut-affil-num=1
ORCID=

en-aut-name=OnodaMinoru
en-aut-sei=Onoda
en-aut-mei=Minoru
kn-aut-name=小野田稔
kn-aut-sei=小野田
kn-aut-mei=稔
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=Potassium
kn-keyword=Potassium
en-keyword=4-[[4-(phenylamino)phenyl]azo]-2,5-dichlorobenzenesulfonic acid
kn-keyword=4-[[4-(phenylamino)phenyl]azo]-2,5-dichlorobenzenesulfonic acid
en-keyword=extraction
kn-keyword=extraction
en-keyword=flow injection analysis
kn-keyword=flow injection analysis
END

start-ver=1.4
cd-journal=joma
no-vol=3
cd-vols=
no-issue=3
article-no=
start-page=265
end-page=269
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1987
dt-pub=19870610
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Spectrophotometric Determination of Anionic Surfactants in River Water with Cationic AZO Dye by Solvent Extraction- Flow Injection Analysis
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Anionic surfactants in water were determined by a spectrophotometric flow injection technique coupled with solvent extraction. The ion associate which formed between an anionic surfactant and an cationic azo dye was extracted into an organic solvent and the absorbance was measured. The carrier was distilled water, and the reagent solution contained an cationic azo dye and sodium sulfate, the pH of which being adjusted to 5 with acetate buffer. A phase separator with a poly(tetrafluoroethylene) porous membrane (0.8μm pore size) was used to separate the organic phase. Six derivatives of cationic azo dyes and several extracting solvents were examined; a pair of 1-methyl-4-(4-diethylaminophenylazo)- pyridinium cation and chloroform turned out best. The sampling rate was 30 samples per hour. Calibration graphs were linear up to 2×10(-6)M or 3×10(-5)M of anionic surfactant when injection volume was 300 or 100μl, respectively. The relative standard deviation(n=10) was 1.5% for 300μl of 1×10(-6)M sodium dodecylsulfate. The detection limit was as little as 1×10(-8)M of anionic surfactant. Anionic surfactants in river water were determined satisfactorily.
en-copyright=
kn-copyright=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=1
ORCID=

en-aut-name=HazakiYoshito
en-aut-sei=Hazaki
en-aut-mei=Yoshito
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=ToeiKyoji
en-aut-sei=Toei
en-aut-mei=Kyoji
kn-aut-name=桐栄恭二
kn-aut-sei=桐栄
kn-aut-mei=恭二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学
en-keyword=Anionic surfactant determination
kn-keyword=Anionic surfactant determination
en-keyword=cationic azo dye
kn-keyword=cationic azo dye
en-keyword=ion associate extraction
kn-keyword=ion associate extraction
en-keyword=spectrophotometry
kn-keyword=spectrophotometry
en-keyword=flow injection analysis
kn-keyword=flow injection analysis
END

start-ver=1.4
cd-journal=joma
no-vol=4
cd-vols=
no-issue=1
article-no=
start-page=81
end-page=85
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1988
dt-pub=19880210
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Simultaneous Determination of Sodium and Potassium Ions in River Water by Ion Chromatography Using Silica Gels as a Stationary Phase
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Alkali metal cations were shown to be separable on a silica gel column by cation exchange. Factors affecting the separation of these cations were investigated. Among them, type and concentration of the mobile phase electrolytes profoundly affected the retention of the analyte. The alkali metal cations were well separated on a 150 mm long Zorbax SIL column with 2.1mm i.d., using an aqueous 0.01mol dm(-3) lithium acetate as the mobile phase. Sodium and potassium in river water were determined rapidly with satisfactory accuracy.
en-copyright=
kn-copyright=

en-aut-name=IwachidoTadashi
en-aut-sei=Iwachido
en-aut-mei=Tadashi
kn-aut-name=岩知道正
kn-aut-sei=岩知道
kn-aut-mei=正
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=IshimaruKenji
kn-aut-sei=Ishimaru
kn-aut-mei=Kenji
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=Alkali metals
kn-keyword=Alkali metals
en-keyword=silica gel column
kn-keyword=silica gel column
en-keyword=simultaneous determination
kn-keyword=simultaneous determination
en-keyword=sodium
kn-keyword=sodium
en-keyword=potassium
kn-keyword=potassium
en-keyword=river water
kn-keyword=river water
en-keyword=ion chromatography
kn-keyword=ion chromatography
END

start-ver=1.4
cd-journal=joma
no-vol=5
cd-vols=
no-issue=1
article-no=
start-page=85
end-page=88
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19890210
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Spectrophotometric Determination of Silicate in Water with Molybdate and Malachite Green
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=On the basis of the coloration formed with molybdosilicate and Malachite Green in aqueous solution, trace amounts of silicate were determined. In an acidic medium, silicate reacted with molybdate to form molybdosilicate, which reacted with Malachite Green to form a colored ion association complex. The color was stabilized by adding poly(vinyl alcohol). The molar absorptivity was 1.0×10(5)mol(-1)cm(-1) at 595nm, and the absorbance of the reagent blank was 0.089. The recommended concentration range of silicon was 0.1-5μg and the limit of detection was 0.01μg of silicon. Silicate in river and tap waters was determined.
en-copyright=
kn-copyright=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=OjimaYuka
en-aut-sei=Ojima
en-aut-mei=Yuka
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=Spectrophotometry
kn-keyword=Spectrophotometry
en-keyword=silicate determination
kn-keyword=silicate determination
en-keyword=molybdate
kn-keyword=molybdate
en-keyword=Malachite Green
kn-keyword=Malachite Green
en-keyword=ion association complex
kn-keyword=ion association complex
END

start-ver=1.4
cd-journal=joma
no-vol=6
cd-vols=
no-issue=5
article-no=
start-page=705
end-page=709
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1990
dt-pub=19901010
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Batchwise and Flow-Injection Methods for the Spectrophotometric Determination of Anionic Surfactants with 4-(4-N, N-Dimethyl- aminophenylazo)-2-methylquinoline
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=solvent-extraction Spectrophotometric method for the determination of anionic surfactants in water was developed with -(4-N, N-dimethylaminophenylazo)-2-methylquinoline (MQ) by batchwise and flow-injection techniques. The ion associates of MQ with anionic surfactants extracted into an organic phase showed a blue shift of the maximum absorption wavelength; their molar absorptivities were 4.5×10(4)l mol(-1) cm(-1) at 560nm. In the batchwise method, a 40-fold extraction concentration was possible. In the 20-fold concentration, the calibration graph was linear at concentration ranging from 1×10(-8)M to 7.5×10(-7)M of anionic surfactants, and the mean absorbances of the reagent blank and the 5×10(-7)M anionic surfactant (dodecylsulfate : LS(-)) were 0.024 and 0.518, respectively; the relative standard deviation for 10 measurements of 5×10(-7)M LS(-) was 0.28%. Foreign ions generally existing in river water did not interfere with the determination. This solvent-extraction spectrophotometric method was satisfactorily applied to a flow-injection method. The reagent MQ was recycled and repeatedly used at least for 7 months, and the efficiency of the reagent has not changed during at least this period.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=KubotaHiroki
kn-aut-sei=Kubota
kn-aut-mei=Hiroki
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=KatsukiMiki
kn-aut-sei=Katsuki
kn-aut-mei=Miki
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=Spectrophotometry
kn-keyword=Spectrophotometry
en-keyword=ion association extraction
kn-keyword=ion association extraction
en-keyword=anionic surfactants
kn-keyword=anionic surfactants
en-keyword=4-(4-N,N-dimethylaminophenylazo)-2-methylquinoline
kn-keyword=4-(4-N,N-dimethylaminophenylazo)-2-methylquinoline
en-keyword=batchwise method
kn-keyword=batchwise method
en-keyword=flow-injection method
kn-keyword=flow-injection method
END

start-ver=1.4
cd-journal=joma
no-vol=6
cd-vols=
no-issue=2
article-no=
start-page=215
end-page=220
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1990
dt-pub=19900410
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Spectrophotometric Determination of Calcium with Dicyclohexano- 24-crown-8 and Propyl Orange by Solvent Extraction/Flow Injection Method
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Calcium in water was determined by a spectrophotometric method involving flow injection coupled with solvent extraction. An ion association complex which formed between a calcium-crown complex ion and a dye anion was extracted into an organic solvent and the absorbance of the organic phase was measured after phase separation. Six derivatives of alkylaminophenylazobenzene sulfonic acid and tetrabromophenolphthalein ethylester were examined as counter anions with dicyclohexano-24-crown-8, and a mixture of benzene and chlorobenzene was examined as an extraction solvent. A suitable method for calcium determination in water was one with Propyl Orange and a (1+1 v/v) mixture of benzene and chlorobenzene. The carrier stream was distilled water, while the reagent stream was comprised of a dye anion and lithium hydroxide. The sampling rate was 20-30 per hour. The calibration graph was linear at concentrations up to 10(-4)M using samples of 100μl. The detection limit corresponding to a signal-to-noise ratio of 3 was 2×10(-7)M; the relative standard deviation was 0.99% for 10 injections of 5×10(-5)M calcium solution. Calcium in river water was determined satisfactorily by the proposed method.
en-copyright=
kn-copyright=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=YonedaNaomi
en-aut-sei=Yoneda
en-aut-mei=Naomi
kn-aut-name=米田直生
kn-aut-sei=米田
kn-aut-mei=直生
aut-affil-num=3
ORCID=

en-aut-name=IwashidoTadashi
en-aut-sei=Iwashido
en-aut-mei=Tadashi
kn-aut-name=岩知道正
kn-aut-sei=岩知道
kn-aut-mei=正
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学
en-keyword=Calcium, Propyl Orange
kn-keyword=Calcium, Propyl Orange
en-keyword=dicyclohexano-24-crown-8
kn-keyword=dicyclohexano-24-crown-8
en-keyword=spectrophotometry
kn-keyword=spectrophotometry
en-keyword=solvent extraction
kn-keyword=solvent extraction
en-keyword=flow-injection method
kn-keyword=flow-injection method
END

start-ver=1.4
cd-journal=joma
no-vol=8
cd-vols=
no-issue=5
article-no=
start-page=619
end-page=625
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1992
dt-pub=19921010
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Separation and Determination of Alkaline-Earth Metal Ions as UV- Absorbing Chelates with EDTA by Capillary Electrophoresis. Determination of Calcium and Magnesium in Water and Serum Samples
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Capillary electrophoresis of alkaline-earth metal ions was examined with a UV-absorbing chelating agent. The metal1 chelates separated in a capillary were measured by on-column UV-absorptive detection. When ethylenediamine-tetraacetic acid (EDTA) was used as an chelating agent in a carrier solution (pH 9.2), the order of the migration time (t(m)) of metal ions was as follows: Ba(2+)<Sr(2+)<Ca(2+)<Mg(2+) (Be(2+) could not be detected). These four ions were separated within 16min using a capillary (50μm i.d.) of 75-cm effective length (L(D)) at an applied voltage of 30kV, and calcium and magnesium ions were separated within 4min using a 25-cm capillary at an applied voltage of 20kV. By using a 50-cm or 25-cm capillary, Ca(2+) and Mg(2+) in river, tap and underground water samples were determined; the detection limits of metal ions were about .10(-5)M (1M=mol dm(-3)), and the relative standard deviations for the determination of around 10(-4)M of the metal ions were less than 2.0%. The method was also applied to the determination of Ca(2+) and Mg(2+) in a standard serum sample.
en-copyright=
kn-copyright=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=MatsudaShin-ya
en-aut-sei=Matsuda
en-aut-mei=Shin-ya
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=ObataYoshimitsu
en-aut-sei=Obata
en-aut-mei=Yoshimitsu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=TanakaHiroshi
en-aut-sei=Tanaka
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学

affil-num=5
en-affil=
kn-affil=Applied Biosystems Japan, Inc.
en-keyword=Alkaline-earth metal ion
kn-keyword=Alkaline-earth metal ion
en-keyword=water sample
kn-keyword=water sample
en-keyword=serum sample
kn-keyword=serum sample
en-keyword=EDTA
kn-keyword=EDTA
en-keyword=capillary electrophoresis
kn-keyword=capillary electrophoresis
en-keyword=on-column UV detection
kn-keyword=on-column UV detection
END

start-ver=1.4
cd-journal=joma
no-vol=14
cd-vols=
no-issue=5
article-no=
start-page=941
end-page=946
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1998
dt-pub=19981010
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=On-Line Photo-Oxidative Decomposition of Phosphorus Compounds to Orthophosphate and Its Application to Flow Injection Spectrophotometric Determinations of Total Phosphorus in River and Waste Waters
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A simple and mild on-line photo-oxidative decomposition method for the highly sensitive flow-injection spectrophotometric determination of total phosphorus in river and waste waters was developed for the first time by using low pressure mercury lamps. Organic and inorganic phosphorus compounds in sample solutions were injected into a carrier solution, which merged with the decomposition solution containing sulfuric acid and potassium peroxodisulfate. The solution components were decomposed oxidatively to orthophosphate while flowing in a photo-reactor. After the decomposition, orthophosphate was determined spectrophotometrically based on the formation of Molybdenum Blue. The photo-reactor consisted of two low pressure mercury lamps, a poly(terafluoroethylene) (PTFE) tubing and a reflection mirror. The PTFE tubing was wound directly around the mercury lamps, which were covered with reflection mirror. The detection limit for phosphorus was about 0.001 mg l(-1), and the sample throuphput was about 20 samples per hour for total phosphorus determination. By using the photo-reactor, most of the phosphorus compounds were decomposed completely, whereas some condensed phosphates were less susceptible to photo-oxidation. The analytical results for practical samples obtained by the proposed method showed a good correlation with those obtained by using a heat-oxidation method, which indicates that the content of the condensed phosphates difficult to be decomposed was very scarce in the practical samples.
en-copyright=
kn-copyright=

en-aut-name=HiguchiKeiro
en-aut-sei=Higuchi
en-aut-mei=Keiro
kn-aut-name=樋口慶郎
kn-aut-sei=樋口
kn-aut-mei=慶郎
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=TamanouchiHiromitsu
kn-aut-sei=Tamanouchi
kn-aut-mei=Hiromitsu
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=Tokyo Kasei Kogyo Co. Ltd.

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=Photo-oxidative decomposition
kn-keyword=Photo-oxidative decomposition
en-keyword=total phosphorus determination
kn-keyword=total phosphorus determination
en-keyword=flow injection analysis
kn-keyword=flow injection analysis
en-keyword=Molybdenum Blue
kn-keyword=Molybdenum Blue
END

start-ver=1.4
cd-journal=joma
no-vol=33
cd-vols=
no-issue=2
article-no=
start-page=116
end-page=119
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1984
dt-pub=19840205
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Continuous flow method for the determination of phosphorus using the fluorescence quenching of Rhodamine 6 G with molybdophosphate
kn-title=モリブドリン酸によるローダミン6Gの消蛍光を利用するリンの連続流れ定量法
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Continuous flow method was examined for the determination of phosphorus. The molybdophosphate formed between orthophosphate and molybdate in hydrochloric acid medium diminished the fluorescence of Rhodamine 6 G. Carrier solution (distilled water) and reagent solution were propelled by double plunger pump P(1) and P(2) (flow rate : 0.98 ml/min), and sample solution(160μl) was injected into the carrier stream. The two streams were mixed in 20 cm long Teflon tubing (1 mm i.d.), and the mixture was flowed through a flow cell(18μl), at which the fluoresence of Rhodamine 6 G was detected(λ(ex) =350 nm, λ(em)=580 nm). The reagent solution consists of 0.035 M molybdenum and 1×10(-5) M Rhodamine 6 G in 0.8 M hydrochloric acid. Co-existing ions generally existing in river and sea waters did not interfere the determination of phosphorus. The calibration curve was linear from 0 to 45 ppb of phosphorus. The method was applied to sea water. The sampling rate was 20 samples per hour.
en-copyright=
kn-copyright=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=1
ORCID=

en-aut-name=MikasaHiroshi
en-aut-sei=Mikasa
en-aut-mei=Hiroshi
kn-aut-name=三笠博司
kn-aut-sei=三笠
kn-aut-mei=博司
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=ToeiKyoji
en-aut-sei=Toei
en-aut-mei=Kyoji
kn-aut-name=桐栄恭二
kn-aut-sei=桐栄
kn-aut-mei=恭二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学
en-keyword=continuous flow analysis of phosphorus by fluorophotometry
kn-keyword=continuous flow analysis of phosphorus by fluorophotometry
en-keyword=fluorescence quenching of Rhodamine 6 G with molybdophosphate
kn-keyword=fluorescence quenching of Rhodamine 6 G with molybdophosphate
en-keyword=sea water
kn-keyword=sea water
END

start-ver=1.4
cd-journal=joma
no-vol=34
cd-vols=
no-issue=8
article-no=
start-page=518
end-page=521
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1985
dt-pub=19850805
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Fluorometric determination of ammonia in river water by flow injection analysis
kn-title=フローインジェクション-蛍光法による河川水中のアンモニアの定量
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Flow injection analysis(FIA) was examined for the fluorometric determination of ammonia in river water. Ammonia reacted with ο-phthalaldehyde(OPA) in the presence of 2-mercaptoethanol(ME) to form a fluorescent substance at pH 9.5. The reagent solution containing 10(-2) M OPA and 10(-3) M ME and the carrier fluid(distilled water) were propelled by a double plunger pump at a rate of 1.2 ml/min. The 40μl sample solution, injected into the carrier stream, was mixed with the reagent solution in a Teflon tubing (3 m, 0.5 mm i.d.) and led to a flow cell(18 μl). Fluorescence excited at λ(ex)=350 nm was measured at λ(em)=486 nm. Ions present commonly in river waters did not interfere with the determination of ammonia. An anion exchange column installed just behind a sample injection valve in the flow system was effective in eliminating interferences with amino acids. Using the proposed FIA system, trace amounts of ammonia(3150 ppb as nitrogen) in river water were determined in the rate of 40 samples per h.
en-copyright=
kn-copyright=

en-aut-name=MikasaHiroshi
en-aut-sei=Mikasa
en-aut-mei=Hiroshi
kn-aut-name=三笠博司
kn-aut-sei=三笠
kn-aut-mei=博司
aut-affil-num=1
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=2
ORCID=

en-aut-name=ToeiKyoji
en-aut-sei=Toei
en-aut-mei=Kyoji
kn-aut-name=桐栄恭二
kn-aut-sei=桐栄
kn-aut-mei=恭二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=flow injection analysis of ammonia
kn-keyword=flow injection analysis of ammonia
en-keyword=reaction of ammonia with ο-phthalaldehyde and 2-mercaptoethanol
kn-keyword=reaction of ammonia with ο-phthalaldehyde and 2-mercaptoethanol
en-keyword=ammonia-nitrogen in waters by fluorophotometry
kn-keyword=ammonia-nitrogen in waters by fluorophotometry
END

start-ver=1.4
cd-journal=joma
no-vol=36
cd-vols=
no-issue=3
article-no=
start-page=207
end-page=209
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1987
dt-pub=19870305
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Spectrophotometric determination of nitrate ion using nitrosation/FIA
kn-title=ニトロソ化反応を利用する硝酸イオンのフローインジェクション/吸光光度法
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=N, N-Bis (2-hydroxypropyl) aniline (BHPA) reacts with nitrite ion in an acidic medium to form a red product, which has the maximum absorption at 500 nm. On the basis of this color reaction, FIA of nitrate was established. Nitrate ion could be reduced to nitrite ion by passing through the reduction column(2 mm×30 cm) packed with copperized cadmium {Cu(Cd) : particle size, about 0.5 mm}, which was installed just behind the sample injection valve. The carrier solution(10(-3) M EDTA, pH 8) and the reagent solution (8×10(-4) M BHPA, 0.35 M HCl, 0.15 M H(3)PO(4)) were propelled at the flow rate of 0.7 ml/min by using a double-plunger pump. The sample(120 μl) was injected into the carrier stream by using a 6-way injection valve. The reaction coil(0.5 mm×2 m) was kept in a thermostatically controlled water bath(80℃). The cooling coil(0.5 mm×50 cm), which was installed just behind the reaction coil, was kept in a water bath (tap water temperature). A calibration curve was linear up to 2×10(-4) M nitrate. The detection limit corresponding to S/N=2 was 10(-6) M nitrate, and the relative standard deviation (10 injections) was 0.4%, and the sampling rate was 40 samples per hour. Nitrate in river water at concentrations of 10(-5) M level was determined.
en-copyright=
kn-copyright=

en-aut-name=ShiCheng Rui
en-aut-sei=Shi
en-aut-mei=Cheng Rui
kn-aut-name=石成瑞
kn-aut-sei=石
kn-aut-mei=成瑞
aut-affil-num=1
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=2
ORCID=

en-aut-name=ToeiKyoji
en-aut-sei=Toei
en-aut-mei=Kyoji
kn-aut-name=桐栄恭二
kn-aut-sei=桐栄
kn-aut-mei=恭二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=FIA of nitrate
kn-keyword=FIA of nitrate
en-keyword=reduction of nitrate to nitrite on Cu (Cd) column
kn-keyword=reduction of nitrate to nitrite on Cu (Cd) column
en-keyword=color reaction of nitrite with N
kn-keyword=color reaction of nitrite with N
END

start-ver=1.4
cd-journal=joma
no-vol=16
cd-vols=
no-issue=12
article-no=
start-page=1303
end-page=1308
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2000
dt-pub=20001210
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Adsorption Behavior of Metal Ions on Cross-linked Chitosan and the Determination of Oxoanions after Pretreatment with a Chitosan Column
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The adsorption behavior of 60 elements at the 10 ng ml(-1) level on high-porous cross-linked chitosan in a packed mini-column was systematically examined. The chitosan used could adsorb anionic species quantitatively as oxoanions or chloro complex anions of metals, such as Ti, V, Mo, W, Ga, Bi, Au(III), Pt(IV) and Pd(II), in sample solutions by an ion-exchange mechanism, and could adsorb some metal ions by a chelating mechanism. Most of the metal ions adsorbed on the chitosan were eluted with 1 M nitric acid, and other noble metals, such as Au, Pt and Pd, were eluted by a solution containing 1 M hydrochloric acid and 0.05 M thiourea. The adsorption fraction of metal ions was investigated by measuring metal ions in eluates by ICP-MS. By using the proposed column pretreatment method, metal ions present as their oxoanions in river-water samples, such as Ti, V, Mo, W, Ga and Bi, were collected on the cross-linked chitosan, eluted and determined. The method was applied to an analysis of reference materials distributed by the Japan Society for Analytical Chemistry: JAC 0031 and JAC 0032. The analytical results agreed closely with other reference values.
en-copyright=
kn-copyright=

en-aut-name=GaoYunhua
en-aut-sei=Gao
en-aut-mei=Yunhua
kn-aut-name=高雲華
kn-aut-sei=高
kn-aut-mei=雲華
aut-affil-num=1
ORCID=

en-aut-name=LeeKyue-Hyung
en-aut-sei=Lee
en-aut-mei=Kyue-Hyung
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学
END

start-ver=1.4
cd-journal=joma
no-vol=16
cd-vols=
no-issue=7
article-no=
start-page=731
end-page=738
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2000
dt-pub=20000710
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Simultaneous Determination of Trace Elements in River-water Samples by ICP-MS in Combination with a Discrete Microsampling Technique after Enrichment with a Chitosan-based Chelating Resin
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A new technique for the preconcentration of trace elements and matrix elimination with a chitosan-based chelating resin was proposed as a useful pretreatment prior to a measurement by inductively coupled plasma-mass spectrometry (ICP-MS). A small volume of the sample solution (80 ?l) was discretely introduced into a nebulizer of ICP-MS using a segmented flow injection (SFI) system; a maximum of fifteen elements were simultaneously measured by a single injection. A chitosan-based chelating resin containing iminodiacetate (IDA) functional groups was used for matrix elimination and enrichment of analyte metal ions. Several metal ions, such as Al, Fe, Ni, Co, Cu, Zn, Ag, Cd, Pb and U, were quantitatively retained on the IDA chelating resin in a micro-column (resin: 1 ml) at pH 6, whereas Na, K, Mg and Ca were completely eluted from the column by washing with an ammonium acetate solution. The concentrations of 24 and 26 elements in river water certified reference materials, JAC 0031 and JAC 0032, respectively, were determined by the proposed SFI/ICP-MS system after pretreating the samples with the proposed technique, as well as without any pretreatment. The thus-obtained analytical data were evaluated by comparing them with the reference values, as well as with those obtained in other studies.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=LeeKyue-Hyung
kn-aut-sei=Lee
kn-aut-mei=Kyue-Hyung
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=TakayanagiToshio
en-aut-sei=Takayanagi
en-aut-mei=Toshio
kn-aut-name=高柳俊夫
kn-aut-sei=高柳
kn-aut-mei=俊夫
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学
END

start-ver=1.4
cd-journal=joma
no-vol=17
cd-vols=
no-issue=11
article-no=
start-page=1285
end-page=1290
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2001
dt-pub=20011110
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Highly Sensitive Determination Method for Total Carbonate in Water Samples by Flow Injection Analysis Coupled with Gas-Diffusion Separation
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A spectrophotometric method for the determination of total carbonate in water samples was developed. The method is based on the color change of an acid-base indicator in relation to the concentration of permeable gas substances through a membrane. By using a new portable FIA system equipped with a gas-diffusion unit, a highly sensitive and on-site determination of total carbonate in aqueous solutions was investigated. A new color-change system with 4-(2',4'-dinitrophenylazo)-1-naphthol-5-sulfonic acid (DNN5S) was developed. Absorbance changes of the reagent solution were measured at 450 nm with a light-emitting diode (LED) as a light source. A new type of gas-diffusion unit was used, and was constructed with double tubing: the inner tubing was a micro porous PTFE (polytetrafluoroethylene) tubing (1.0 mm inner diameter and 1.8 mm outer diameter, pore size 2 μm, porosity 50%); the outer tubing was made of glass with 2.0 mm inner diameter. The optimized system conditions were as follows: the sample size was 200 μl, the temperature of the air bath for the gas-diffusion unit was 25℃, and the length of the gas-diffusion unit was 15 cm; each flow rate was 0.3 ml min(-1). For measuring carbonate at low concentrations, a method for preparing water with less carbonate was proposed: the carbonate content of the water was decreased down to 5×10(-7) M. The calibration graph was rectilinear from 1×10(-6) M to 10(-3) M, and the detection limit (corresponding to a signal-to-noise ratio of 3) was 1×10(-6) M of carbonate. The relative standard deviation (RSD) of ten measurements of 2.3×10(-5) M Na(2)CO(3) solution was 1.9%. The total carbonate in various kinds of water (such as river, sea, rain, distilled and ultra purified) was determined.
en-copyright=
kn-copyright=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=1
ORCID=

en-aut-name=WeiYanlin
en-aut-sei=Wei
en-aut-mei=Yanlin
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=YamamotoMasaki
en-aut-sei=Yamamoto
en-aut-mei=Masaki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=TanakaHiroki
en-aut-sei=Tanaka
en-aut-mei=Hiroki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=TakayanagiToshio
en-aut-sei=Takayanagi
en-aut-mei=Toshio
kn-aut-name=高柳俊夫
kn-aut-sei=高柳
kn-aut-mei=俊夫
aut-affil-num=5
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=6
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学

affil-num=5
en-affil=
kn-affil=岡山大学

affil-num=6
en-affil=
kn-affil=岡山大学
END

start-ver=1.4
cd-journal=joma
no-vol=35
cd-vols=
no-issue=4
article-no=
start-page=344
end-page=348
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1986
dt-pub=19860405
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Spectrophotometric determination of boron by flow injection analysis
kn-title=フローインジェクション分析法によるホウ素の吸光光度定量
en-subtitle=
kn-subtitle=
en-abstract=Spectrophotometric determination of boron existing as boric acid in water was examined with H-resorcinol {1-(2, 4-dihydroxy-1-phenylazo)-8-hydroxynaphthalene-3, 6-disulfonic acid} by flow injection analysis. Carrier solution (deionized water) and reagent solution were propelled by double plunger pump (flow rate : 0.6 ml/min), and sample solution (320 μl) was injected into a carrier stream. The reagent solution was prepared by dissolving 0.096 g of H-resorcinol in 1 1 of ammonium acetate buffer solution (50 g/l, pH 5.5) containing 3.72 g of EDTA. The two streams were mixed in 16 m long Teflon tubing (0.5 mm i.d.), and the mixture was flowed through a flow cell (36 μl; 1.5 mm i.d.×20 mm), at which the absorbance of boron-H-resorcinol complex was detected (λ=510 nm). The linear relationship between the peak height and concentration of boron was obtained in the range of 0 to 1 ppm. The detection limit was 5 ppb (S/N=2). The sampling rate was 30 samples per hour. Generally ions co-existing in river and sea waters did not interfere with the determination of boron by adding EDTA solution.
kn-abstract=H-レゾルシノール{1-(2,4-ジヒドロキシ-1-フェニルアゾ)-8-ヒドロキシナフタレン-3,6-ジスルホン酸}とホウ酸との反応を利用したホウ素の吸光光度フローインジェクション分析について検討した.ダブルプランジャー型ポンプを用い,一方にキャリヤー液(イオン交換水)を流し,もう一方に反応試薬溶液(H-レゾルシノールとEDTAを含むpH5.5の酢酸アンモニウム緩衝液)を流し,キャリヤー液流中に試料水を注入した.キャリヤー液と反応試薬液は反応コイル中で混合した.錯体の生成を促進するために,反応コイルを恒温槽中(100℃)で加熱する.その後混合液はフローセル(36μl)に導かれ,ホウ素錯体の吸光度を測定した(波長510nm).ホウ酸と反応する試薬についてはH酸(1-アミノ-8-ヒドロキシナフタレン-3,6-ジスルホン酸)誘導体14種類について検討した結果,温レゾルシノールを用いることにした.河川水,海水中に普通存在する程度の金属イオン及び無機陰イオンは定量を妨害しない.0.1M程度のナトリウムイオン,カリウムイオンは負の誤差を与えるが,海水は20倍に希釈して測定するのでこれらイオンの妨害は問題とはならなかった.検量線は0〜夏PP田の範囲で直線性を示し,検出限界は5ppb(S/N=2)であった.又ホウ素108ppbでの10回繰り返し実験の相対標準偏差は0.53%であった.毎分0.6mlで送液し試料注入量320μl,反応コイル0.5mm i.d.×16mとしたときの分析速度は1時間当たり約30試料である.
en-copyright=
kn-copyright=

en-aut-name=ToeiKyoji
en-aut-sei=Toei
en-aut-mei=Kyoji
kn-aut-name=桐栄恭二
kn-aut-sei=桐栄
kn-aut-mei=恭二
aut-affil-num=1
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=OnodaMinoru
en-aut-sei=Onoda
en-aut-mei=Minoru
kn-aut-name=小野田稔
kn-aut-sei=小野田
kn-aut-mei=稔
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学
en-keyword=spectrophotometry of boron with H-resorcinol by flow injection analysis
kn-keyword=spectrophotometry of boron with H-resorcinol by flow injection analysis
en-keyword=water samples
kn-keyword=water samples
END

start-ver=1.4
cd-journal=joma
no-vol=36
cd-vols=
no-issue=8
article-no=
start-page=503
end-page=507
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1987
dt-pub=19870805
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Determination of total carbonate-carbon in river water by ion chromatography with photometric detection
kn-title=吸光光度検出イオンクロマトグラフィーによる河川水中の総炭酸の定量
en-subtitle=
kn-subtitle=
en-abstract=Determination of total carbonate-carbon in river water was achieved by ion chromatography with an ultraviolet photometric detector and an anion exchange column(TSK gel IC-Anion PW, 4.6 mm i.d.×50 mm). Trimellitate (1,2,4-benzenetricarboxylate, 4×10(-4) M) solution(pH 7.5) was used as an eluent. Ten microliters of sample solution was injected and decrease in absorbance of the trimellitate eluent at 270 nm was detected. Calcium and magnesium ions interfere with the determination of total carbonate-carbon. These could be removed completely by passing the sample solution through a cation exchange-type pretreatment cartridge column (sodium type). The expelled trimellitate ion from the column by anions (chloride, sulfate and nitrate ions) in sample solution decreased the peak height of hydrogen carbonate ion. This interference could be corrected by using the summation of peak areas of coexisting anions. By the proposed method, total carbonate-carbon in river water was determined. For total carbonate-carbon, the results were in good agreement with the values obtained by FIA.
kn-abstract=吸光光度検出器を用いたイオンクロマトグラフィーによる,河川水中の総炭酸(炭酸,炭酸水素イオン及び炭酸イオンの合量)の定量法が検討された.吸収を示す溶離イオンとしては,トリメリット酸イオン(1,2,4-ベンゼントリカルボン酸イオン)を用い,陰イオン交換カラム(TSK gel IC-Anion-PW, 4.6mm i.d.×50mm)を用いた.試料中のカルシウム,マグネシウムイオンは,溶離イオンのカルボン酸イオンと反応し,総炭酸の定量に影響を与える.この妨害は,Na型に変えたイオン交換型試料前処理カートリッジカラム(Toyopak IC-SPM)に試料を通すことにより完全に除くことができた.試料中の陰イオンにより,追い出されてきたトリメリテートイオンの吸収は炭酸水素イオンのピークに影響を与え,負の誤差を生じる.この誤差は,試料中に共存する陰イオンのピークの面積の和を用いることにより補正可能であることが分かった.河川水中の総炭酸の定量を行ったところ,FIAにより得られた値と良く一致した.
en-copyright=
kn-copyright=

en-aut-name=HironakaTakashi
en-aut-sei=Hironaka
en-aut-mei=Takashi
kn-aut-name=弘中孝志
kn-aut-sei=弘中
kn-aut-mei=孝志
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=indirect photometric ion chromatography
kn-keyword=indirect photometric ion chromatography
en-keyword=hydrogen carbonate ion in river water
kn-keyword=hydrogen carbonate ion in river water
en-keyword=elution with 1, 2
kn-keyword=elution with 1, 2
END

start-ver=1.4
cd-journal=joma
no-vol=36
cd-vols=
no-issue=2
article-no=
start-page=77
end-page=81
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1987
dt-pub=19870205
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Comparison of separation efficiency of benzene carboxylate derivatives for the determination of chloride, sulfate and nitrate ions in river water by indirect photometric ion chromatography
kn-title=間接吸光検出イオンクロマトグラフィーによる河川水中の塩化物イオン,硫酸イオン及び硝酸イオン定量のためのベンゼンカルボン酸誘導体の分離能の比較
en-subtitle=
kn-subtitle=
en-abstract=Rapid and sensitive determination of chloride, sulfate and nitrate ions in river water was achieved by ion chromatography with UV photometric detector. Comparison of elution ability of eluent ions was made by using phthalate, hemimellitate, trimellitate, trimesate and pyromellitate ions at pH 7.5. Trimellitate solution (1,2,4-benzenetricarboxylate, 4×10(-4) M) is superior to other eluent ions because of its strong light-absorption at longer wavelength beyond 250 nm, suitable ability of elution for chloride, sulfate and nitrate ions, low price, high purity and easy availability. An anion exchange column (TSK gel IC-Anion-PW, 4.6 mm i.d.×50 mm) was used. Twenty microliters of sample solution was injected and decrease in absorbance of the trimellitate eluent at 250300 nm was detected. The calibration curves were linear in the range of (0.810)×10(-4) M for chloride, (0.44)×10(-4) M for sulfate and (0.120)×10(-4) M for nitrate. By the proposed method, chloride, sulfate and nitrate in river water were determined within four min. The relative standard deviations of ten measurements of tap water were 0.35% for chloride, 0.56% for sulfate and 1.3% for nitrate, respectively.
kn-abstract=吸光光度検出器を用いたイオンクロマトグラフィーによる河川水中の塩化物イオン,硫酸イオン及び硝酸イオンの分析を目的とし本研究を行った.溶離イオンとして,2価,3価及び4価のベンゼンカルボン酸誘導体を比較した.河川水に含まれる程度の塩化物,硫酸,硝酸イオンの定量のためにはトリメリテートイオン(1,2,4-ベンゼントリカルボン酸イオン)が有用であることが分かった.陰イオン交換カラム(TSK gel IC-Anion-PW,4.6mmi.d×50mm)を用いることにより,塩化物,硫酸,硝酸イオンを約4分で分離定量できた.検量線は塩化物イオン(0.8~10)×10(-4)M,硫酸イオン(4.4~4)×10(-4)M,硝酸イオン(0.1~20)×10(-4)Mの範囲で良好な直線となった.普通河川水中に存在する程度のイオソは定量を妨害しない.再現性は各イオンとも相対標準偏差で1.5%以内であった.検出限界は塩化物イオン0.1ppm,硫酸イオソ0.2ppm,硝酸イオン0.1ppmであった.実際試料(河川水,水道水)に応用し,満足のいく結果を得た.
en-copyright=
kn-copyright=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=1
ORCID=

en-aut-name=SawataniIkuo
en-aut-sei=Sawatani
en-aut-mei=Ikuo
kn-aut-name=沢谷郁夫
kn-aut-sei=沢谷
kn-aut-mei=郁夫
aut-affil-num=2
ORCID=

en-aut-name=HironakaTakashi
en-aut-sei=Hironaka
en-aut-mei=Takashi
kn-aut-name=弘中孝志
kn-aut-sei=弘中
kn-aut-mei=孝志
aut-affil-num=3
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=4
ORCID=

en-aut-name=ToeiKyoji
en-aut-sei=Toei
en-aut-mei=Kyoji
kn-aut-name=桐栄恭二
kn-aut-sei=桐栄
kn-aut-mei=恭二
aut-affil-num=5
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学

affil-num=5
en-affil=
kn-affil=岡山大学
en-keyword=ion chromatography with photometric detector
kn-keyword=ion chromatography with photometric detector
en-keyword=comparison of eluent ions
kn-keyword=comparison of eluent ions
en-keyword=elution with trimellitate solution
kn-keyword=elution with trimellitate solution
en-keyword=determination of chloride
kn-keyword=determination of chloride
END

start-ver=1.4
cd-journal=joma
no-vol=40
cd-vols=
no-issue=7
article-no=
start-page=355
end-page=360
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1991
dt-pub=19910705
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Indirect photometric ion chromatography of inorganic anions, calcium and magnesium ions with 1, 5-naphthalenedisulfonate as an eluent
kn-title=1,5-ナフタレンジスルホン酸イオンを溶離イオンとして用いる無機陰イオン及びカルシウム,マグネシウムイオンの間接吸光検出イオンクロマトグラフィー
en-subtitle=
kn-subtitle=
en-abstract=Ion chromatography by indirect photometric detection was studied with 1,5-naphthalenedisulfonate (1,5-NDS) as an eluent ion. The advantages of 1,5-NDS are: (1) UV light absorption at longer wavelength near 300 nm, (2) adequate strength of elution ability for analysis of environmental waters, (3) little interference from pH change, and (4) stable, low cost and commercially available reagent. Chloride, nitrate and sulfate ions in river, spring and tap waters were determined with 4×10(-4) M 1,5-NDS by injecting 20 μl of sample solution. By injecting 100 μl of sample solution, these anions in rain water were determined with 2×10(-4) M eluent. When Ca(2+) and Mg(2+) coexist at concentrations above 10(-3) M, pretreatment with cartridge-type cation exchanger column is useful. Calcium(II) and manganese(II) ions were simultaneously determined with the other anions using the eluent containing 1×10(-4) M 1,5-NDS, 5×10(-5) M EDTA and 1×10(-4) M acetate buffer solution (pH 6).
kn-abstract=溶離イオンとして1,5-ナフタレンジスルホン酸イオン(1,5-NDS)を用いる間接吸光検出イオンクロマトグラフィーによる無機陰イオン及びカルシウムイオン,マグネシウムイオンの同時定量法について検討した.1,5-NDSの主な利点は,(1)長波長側の300nm付近で高感度な定量が可能である,(2)溶離能が適度に強く,分離分析濃度範囲が環境水中の陰イオンの定量に適当である,(3)試料溶液のpHの影響を受けにくく,溶離液は広いpH範囲で使用できる,(4)試薬が安定であり,安価で入手しやすいなどである.又溶離液にEDTAを加えてCa(2+),Mg(2+)をキレート陰イオンとすることにより,無機陰イオンと同時定量が可能となった.本法により河川水,雨水中の無機陰イオン(Cl(-),NO(3)(-),SO(4)(2-))及びCa(2+),Mg(2+)の定量を行ったところ,良好な結果が得られた.
en-copyright=
kn-copyright=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=HironakaTakashi
en-aut-sei=Hironaka
en-aut-mei=Takashi
kn-aut-name=弘中孝志
kn-aut-sei=弘中
kn-aut-mei=孝志
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=indirect photometric ion chromatography
kn-keyword=indirect photometric ion chromatography
en-keyword=1,5-naphthalenedisulfonate
kn-keyword=1,5-naphthalenedisulfonate
en-keyword=determination of inorganic anions
kn-keyword=determination of inorganic anions
END

start-ver=1.4
cd-journal=joma
no-vol=40
cd-vols=
no-issue=5
article-no=
start-page=T107
end-page=T112
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1991
dt-pub=19910505
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Spectrophotometric determination of sodium and potassium by FIA after separation on a cation exchanger column and solvent extraction
kn-title=陽イオン交換カラム分離/溶媒抽出法を用いるナトリウム及びカリウムイオンのフローインジェクション吸光光度法
en-subtitle=
kn-subtitle=
en-abstract=Sodium and potassium ions were spectrophotometrically determined by a solvent extraction/flow injection method incorporated with a cation exchanger column. The ion association complexes which formed between alkali metal-crown ether complexes and anionic dye were extracted into an organic phase, and the absorbance of the organic phase was measured after the phase separation by a phase separator with poly (tetrafluoroethylene) porous membrane. The manifold was composed of three streams: 1. a carrier stream, 2. an eluent stream, and 3. an extraction solvent stream. The eluent contained 4×10(-3)M EDTA?3Li. The extraction solvent (1+1 mixture of benzene and chlorobenzene) contained 3×10(-3)M tetrabromophenolphthalein ethyl ester and 2×10(-3)M dicyclohexano-18-crown-6. Sodium and potassium ions were separated on a cation exchanger column (2.5mm i.d.×12mm). The eluent was made alkaline (pH 10) by passing through the anion exchanger membrane tubing which was kept in a 0.1M LiOH solution. The absorbance of the organic phase was measured at 615nm. Calibration graphs were linear up to 5×10(-4)M for Na(+) and 8×10(-5)M for K(+), respectively. The sample throughput was 12h(-1). The procedure was applicable to river and tap water samples.
kn-abstract=Na(+), K(+)の溶媒抽出/吸光光度定量をFIAにより行った.両イオンの分離は低交換容量の陽イオン交換樹脂カラムにより行った.イオン交換樹脂は内径2.5mm,長さ12mmの樹脂製カラムに充てんして用いた.流れ系はキャリヤー,溶離液,抽出液の3流路を用い,試料はキャリヤーに注入した.キャリヤーは溶離液と合流し,カラムでNa(+)とK(+)は分離された.溶離液には4×10(-4)M EDTA・3Liを使用した.分析イオンを含む溶出液は,陰イオン交換膜チューブでアルカリ性となり,T字型セグメンターで有機相と合流し,抽出コイル内でNa(+), K(+)の抽出が行われた.有機相はイオン会合体形成用の染料陰イオンTBPE(テトラブロモフェノールフタレインエチルエステル)とクラウン化合物を含むベンゼン,クロロベンゼン(1+1)の混合溶媒である.ポリテトラフルオロエチレン膜を備えた相分離器により分離された有機相の吸光度は615nmで測定された. 5×10(-4)M以下のNa(+), 8×10(-5)M以下のK(+)に対して検量線は直線関係を示した.又本法による分析速度は毎時12試料であった.
en-copyright=
kn-copyright=

en-aut-name=YoshidaKo
en-aut-sei=Yoshida
en-aut-mei=Ko
kn-aut-name=吉田耕
kn-aut-sei=吉田
kn-aut-mei=耕
aut-affil-num=1
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学
en-keyword=sodium and potassium determination
kn-keyword=sodium and potassium determination
en-keyword=spectrophotometry
kn-keyword=spectrophotometry
en-keyword=solvent extraction/flow injection analysis
kn-keyword=solvent extraction/flow injection analysis
en-keyword=cation exchanger column
kn-keyword=cation exchanger column
en-keyword=dicyclohexano-18-crown-6
kn-keyword=dicyclohexano-18-crown-6
en-keyword=tetrabromophenolphthalein ethyl ester
kn-keyword=tetrabromophenolphthalein ethyl ester
END

start-ver=1.4
cd-journal=joma
no-vol=42
cd-vols=
no-issue=9
article-no=
start-page=T123
end-page=T128
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1993
dt-pub=19930905
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Assembly of a new gas-diffusion unit and its application to the determination of total carbonate and ammoniacal nitrogen by FIA.
kn-title=新規ガス透過装置の試作とそれを用いるフローインジェクション分析法による天然水中の総炭酸及びアンモニア態窒素の吸光光度定量
en-subtitle=
kn-subtitle=
en-abstract=A new gas-diffusion unit was constructed and applied to determine total carbonate or ammoniacal nitrogen in water by spectrophotometric FIA. The gas diffusion unit, which was constructed without any glue, could be assembled easily by fastening the screws to tee connectors with ferrules. The new gas-diffusion unit was improved to decrease the dead volume. The unit gave sharper peaks than the previous one, and peaks higher by 10% in the case of CO(2) determination. The gas-diffusion part consisted of an inner microporous polytetrafluoroethylene (PTFE) tube (GORE-TEX?, 1.0 mm i.d., 1.8 mm o.d., pore size 2.0 μm, porosity 50%) and an outer PTFE tube (2.0 mm i.d., 3.0 mm o.d.). Sample solution was injected into the carrier solution (CS), in which the analyte was converted to a gaseous substance which passed through the microporous PTFE membrane to be mixed with the reagent solution (RS) flowing in the space between the outer and the inner tubings. The resulting pH shift caused the color of the indicator in RS to change. The conditions for the determination of total carbonate are as folows; CS was 1.8X×10(-3) mol dm(-3) H(2)SO(4), RS contained Cresol Red (at pH 9.0) and the detection wavelength was 410 nm. The detection limit was 0.96 mg dm(-3) CO(2) (S/N=3), the response was linear up to 172 mg dm(-3), and the sampling rate was 20 h(-1). For ammoniacal nitrogen, CS was 10(-2) mol dm(-3) NaOH, RS contained Cresol Red (pH 7.0) and absorbance was measured at 550 nm. The detection limit was 30μg dm(-3)NH(4)(+)-N (S/N=3), the response was linear up to 3.5 mg dm(-3), and the sampling rate was 30 h(-1). Total carbonate and ammoniacal nitrogen in river and seawater samples were determined satisfactorily.
kn-abstract=今回新たに多孔質PTFE(polytetrafluoroethylene)チューブを分離膜とするガス透過装置を試作し,その性能について総炭酸定量用FIA装置を用いて検討した.新しいガス透過装置は組み立てが簡単で,前回製作のものに比べ,約10%の感度向上が達成され,更にピークのテイリングも減少した.本装置を組み込んだFIAにより環境水中の総炭酸,アンモニア態窒素の定量が可能である.いずれの場合もpH変化に伴うクレゾールレッドの呈色変化を測定に利用した.本法によれば多孔質ガス透過チューブ長8cmのとき,172mg dm(-3)(4×10(-3)mol dm(-3))以下の総炭酸を1時間当たり20試料,3.6mg dm(-3)(2.6×10(-4)mol dm(-3))以下のアンモニア態窒素を1時間当たり30試料の速さで測定できた.この際の検出限界(S/N=3に相当)は総炭酸の場合,0.96mg dm(-3)(2×10(-5)mol dm(-3)),アンモニア態窒素の場合は30μg dm(-3)(2×10(-6)mol dm(-3))であった.
en-copyright=
kn-copyright=

en-aut-name=SanadaMasahiro
en-aut-sei=Sanada
en-aut-mei=Masahiro
kn-aut-name=真田昌宏
kn-aut-sei=真田
kn-aut-mei=昌宏
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=FIA with gas-diffusion unit
kn-keyword=FIA with gas-diffusion unit
en-keyword=tubular microporous polytetrafluoroethylene
kn-keyword=tubular microporous polytetrafluoroethylene
en-keyword=determination of total carbonate and ammoniacal nitrogen
kn-keyword=determination of total carbonate and ammoniacal nitrogen
END

start-ver=1.4
cd-journal=joma
no-vol=42
cd-vols=
no-issue=12
article-no=
start-page=873
end-page=880
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1993
dt-pub=19931205
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Separation of metal ions and the determination of calcium and magnesium ions with N, N'-di(2-hydroxybenzyl)ethylenediamine-N, N'-diacetic acid by high-performance capillary electrophoresis
kn-title=キャピラリー電気泳動によるN,N'-ジ(2-ヒドロキシベンジル)エチレンジアミン-N,N'-二酢酸を用いる金属イオンの分離とカルシウム及びマグネシウムイオンの定量
en-subtitle=
kn-subtitle=
en-abstract=The capillary electrophoresis study was carried out by using HBED as a chelating and coloring agent. The title compound HBED(H(4)Y) reacts with divalent (M(2+)) and trivalent metal ions (M(3+)) to form chelate anions MY(2-) and MY(-), respectively. Eleven divalent metal ions and three trivalent metal ions were detected as peaks at pH 9.3. When a carrier containing 2 × 10(-3) M HBED (pH 10.5) and sample solutions containing 1 × 10(-4) M HBED were used, the mobilities of the metal ions (absolute value) increased in the following order: Co(2+) (Co(3+)) (2.05) < Mn(2+) (2.10) < Al(3+) (2.12) < Fe(3+) (2.15) < Pb(2+) (2.64)<Hg(2+) (3.20)<Cd(2+) (3.21)<Ca(2+) (3.26)<Ni(2+) (3.34)<Cu(2+)(3.42)<Zn(2+) (3.52) < Pd(2+) (3.60)< HBED(3.74). Most of the metal ions form stable chelates at about pH 10. HBED chelates absorb UV light strongly at longer wavelenghs near to 294 nm, compared with EDTA chelates; highly sensitive detection of metal ions could be achieved with HBED. The proposed method with HBED was applied to the determination of calcium and magnesium ions in river water and serum samples.
kn-abstract=表題のEDTA類縁試薬(HBEDと略記)を用いて金属イオンのキャピラリー電気泳動について検討した.HBED(H(4)Y)は二価及び三価金属イオン(Mn+)と反応し,MY(2-),MY(-)型キレート陰イオンを形成する.pH9〜10で11種の二価金属イオンと2種の三価金属イオンのピークを得た.2×10(-3)M HBEDを含むpH10.5の泳動液を用いた場合,金属イオンの移動度(絶対値)は次の順に大きくなる(見掛けのイオン移動度):Co(2+)(2.05)<Mn(2+)(2.10)<Al(3+)(2.12)<Fe(3+)(2.15)<Pb(2+)(2.64)<Hg(2+)(3.20)<Cd(2+)(3.21)<Ca(2+)(3.26)<Ni(2+)(3.34)<Cu(2+)(3.42)<Zn(2+)(3.52)<Pd(2+)(3.60)<HBED(3.74).イオン移動度に及ぼすpHの影響から,大部分の金属イオンはpH10付近で安定なキレートを生成することが分かった.HBEDキレートは,EDTAに比べ,長波長(294nm付近)に強い吸収を示し高感度定量が可能である.本法を河川水,血清中のCa(2+),Mg(2+)の定量に応用し,良好な結果を得た.
en-copyright=
kn-copyright=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=1
ORCID=

en-aut-name=MorimotoKouji
en-aut-sei=Morimoto
en-aut-mei=Kouji
kn-aut-name=森本浩司
kn-aut-sei=森本
kn-aut-mei=浩司
aut-affil-num=2
ORCID=

en-aut-name=KuwabaraMasayoshi
en-aut-sei=Kuwabara
en-aut-mei=Masayoshi
kn-aut-name=桑原正良
kn-aut-sei=桑原
kn-aut-mei=正良
aut-affil-num=3
ORCID=

en-aut-name=ObataYoshimitsu
en-aut-sei=Obata
en-aut-mei=Yoshimitsu
kn-aut-name=小畑義光
kn-aut-sei=小畑
kn-aut-mei=義光
aut-affil-num=4
ORCID=

en-aut-name=IzumiKunitatsu
en-aut-sei=Izumi
en-aut-mei=Kunitatsu
kn-aut-name=泉国辰
kn-aut-sei=泉
kn-aut-mei=国辰
aut-affil-num=5
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=アプライドバイオシステムズ

affil-num=5
en-affil=
kn-affil=アプライドバイオシステムズ
en-keyword=high-performance capillary electrophoresis
kn-keyword=high-performance capillary electrophoresis
en-keyword=separation of metal ions
kn-keyword=separation of metal ions
en-keyword=determination of calcium and magnesium
kn-keyword=determination of calcium and magnesium
en-keyword=N, N'-di(2-hydroxybenzyl)ethylenediamine-N
kn-keyword=N, N'-di(2-hydroxybenzyl)ethylenediamine-N
END

start-ver=1.4
cd-journal=joma
no-vol=47
cd-vols=
no-issue=8
article-no=
start-page=513
end-page=517
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1998
dt-pub=19980805
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Highly sensitive graphite-furnace AAS of lead using a miniaturemembrane concentration/dissolution method
kn-title=微小膜濃縮/黒鉛炉原子吸光法による鉛の高感度定量
en-subtitle=
kn-subtitle=
en-abstract=極微量の鉛イオンを定量するための濃縮法として,膜濾過捕集系を改良し,微小膜捕集濃縮/溶解法を用い,黒鉛炉AASにより測定する鉛の高感度定量法を開発した.試料溶液に3.5×10(-5)Mゼフィラミンを加えた後,鉛イオンをピロリジンジチオカルバミン酸イオンと錯形成させ,微小メンブランフィルター(MF)を用いて濾過し,膜捕集濃縮する.用いたMFは膜直径5mm,濾過有効径2mm,孔径0.2μmのニトロセルロース製であり,鉛キレートを捕集後,MFをポンチで3mmにカットして用いた.これにより,膜溶解溶媒であるメチルセロソルブの量を100μlまで減少させることができ,高倍率濃縮を達成することができた.試料量10mlの濾過時間は15分であった.試料10mlを用い,メチルセロソルブ200μlに溶解したときの鉛の定量下限は,10 pptであり,鉛40pptを含む試料を用いたときの相対標準偏差は4.51%(n=4)であった.本法により,水道水,河川水中の鉛を定量した.
kn-abstract=Ultra-trace amounts of lead were determined by graphite-furnace AAS (GF-AAS) after miniature-membrane filter (MF) concentration/dissolution. Lead was concentrated as a pyrrolidinedithiocarbamate (APDC) chelate on a miniature MF, which was 5mm in diameter, 2mm in effective filtering diameter and 0.2 μm in pore size. After collection of the lead chelate on MF, the MF was cut so as to be 3mm in diameter using a punch. This tiny MF was dissolved in 100 μl of a dissolution solvent (methyl cellosolve), which resulted in a high concentration efficiency. When 10 ml of a sample was used, the concentration ratio was 100. The addition of 5 × 10(-5) M Zephiramine to the sample solution before chelation was effective for collecting lead; the recovery was almost 100%. The filtering time was 15 min for a 10 ml sample solution. The detection limit was 10 ppt when a 10 ml of sample solution was concentrated in 200 μl of methyl cellosolve. Measurements by GF-AAS were carried out using 40 μl of a methyl cellosolve solution. The relative standard deviation for 40 ppt of lead was 4.51% (n= 4). This method was applied to both river- and tap-water samples.
en-copyright=
kn-copyright=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=1
ORCID=

en-aut-name=OhsakiTakashi
en-aut-sei=Ohsaki
en-aut-mei=Takashi
kn-aut-name=大崎隆史
kn-aut-sei=大崎
kn-aut-mei=隆史
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=lead
kn-keyword=lead
en-keyword=miniature membrane filter concentration/dissolution
kn-keyword=miniature membrane filter concentration/dissolution
en-keyword=ammonium pyrrolidinedithiocarbamate
kn-keyword=ammonium pyrrolidinedithiocarbamate
en-keyword=graphite furnace AAS
kn-keyword=graphite furnace AAS
END

start-ver=1.4
cd-journal=joma
no-vol=47
cd-vols=
no-issue=6
article-no=
start-page=375
end-page=380
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1998
dt-pub=19980605
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Simultaneous determination of nitrate and nitrite ion by micro-flow injection analysis
kn-title=マイクロフローインジェクション分析法による硝酸,亜硝酸イオンの同時定量
en-subtitle=
kn-subtitle=
en-abstract=試薬,試料量の低減化とオンサイト分析を目的として,マイクロフロー方式FIA(μFIA)による硝酸イオン,亜硝酸イオンの定量について検討した.流路は二流路とし,ダブルプランジャー型マイクロポンプを用い,吐出量は2.5μl stroke-1,流量は50μl min-1とした.吸光検出反応には,スルファニルアミドと2-ナフチルエチレンジアミンを用いるジアゾ化-カップリング反応を用い,538nmで測定した.試料注入量20μlで,内径0.25mm,長さ75 cmの反応コイルを用いれば,通常の河川水程度の硝酸,亜硝酸イオンの定量が可能である.μFIA用のCd/Cu還元ミニカラムは,カドミウムパウダー(60〜80メッシュ)を銅コーティングし,内径0.53mmのシリカチューブ(長さ5cm)に詰めて作製した.本ミニカラムによる硝酸イオンの亜硝酸イオンへの還元効率は99%以上であった.スプリット方式により,硝酸亜硝酸イオンの同時定量用流路を構築した.実際試料のオンサイト分析装置には,発光ダイオード(LED)を川いて,消費電力の低減化を計った.硝酸,亜硝酸イオンを単独に定量する場合の検出限界はそれぞれ約2×10(-8)Mであり,同時定量の場合には約10(-7)Mであった.河川水中の硝酸,亜硝酸イオンの同時定量にも応用できることが分かった.
kn-abstract=To minimize the sample size, reagent consumption and waste, a micro-flow injection analysis (μFIA) was investigated and applied to the simultaneous determination of nitrate and nitrite ion in water samples. A double-plunger micropump was used to propel a carrier and a chromogenic solution; each flow rate was 50 μl min(-1), and the delivery volume was 2.5 μl per stroke. Nitrate was reduced to nitrite on line by passing through a mini column (0.53 mm i.d.×5 cm) packed with powdered Cd/Cu (6080 mesh). The reduction efficiency was 99% using this reduction column. Detection was carried out at 538 nm with a light-emitting diode used as an azo dye. The carrier solution contained EDTA and NaCl (pH 8.18.4) and the reagent solution contained sulfanilamide, N-(1-naphthyl)ethylenediamine and HCl. For a simultaneous determination, the sample injected into the carrier stream was split into two streams: one passed through the mini Cd/Cu column ; the other passed through a bypass column packed with glass beads. The sample zone passing through the bypass column gave a first peak derived from nitrite; the other sample zone passing through the reduction column gave the second peak derived from nitrate and nitrite. The detection limits of nitrate and nitrite were about 1×10(-7) M using the proposed simultaneous determination system.
en-copyright=
kn-copyright=

en-aut-name=MaLan
en-aut-sei=Ma
en-aut-mei=Lan
kn-aut-name=馬蘭
kn-aut-sei=馬
kn-aut-mei=蘭
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

en-aut-name=HattoriTakayasu
en-aut-sei=Hattori
en-aut-mei=Takayasu
kn-aut-name=服部隆康
kn-aut-sei=服部
kn-aut-mei=隆康
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=旭テクネイオン(株)
en-keyword=micro-flow injection analysis
kn-keyword=micro-flow injection analysis
en-keyword=river water, nitrate and nitrite
kn-keyword=river water, nitrate and nitrite
en-keyword=simultaneous determination
kn-keyword=simultaneous determination
en-keyword=mini Cd/Cu reduction column
kn-keyword=mini Cd/Cu reduction column
END

start-ver=1.4
cd-journal=joma
no-vol=48
cd-vols=
no-issue=2
article-no=
start-page=253
end-page=259
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1999
dt-pub=19990205
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Development of a new gas-permeation system and its application to the spectrophotometric determination of ammonium ion by FIA
kn-title=精密分析用ガス透過システムの設計とガス透過/フローインジェクション法によるアンモニア態窒素の吸光光度定量
en-subtitle=
kn-subtitle=
en-abstract=ガス透過分離におけるガス透過の長期間の安定性と高効率化,更にガス透過効率の長期間の再現性を向上させた,新しいオンラインガス透過システムを構築した.このシステムでは新しく設計・製作したガス透過ユニットを組み込み,ユニット中を溶液が下方から上方に流れるようにし,気泡の発生を防ぐ工夫がほどこされ,更に測定後にガス透過ユニット内に滞留する溶液を排除するために2個の六方切り替えバルブを内蔵させている.ガスの安定的透過のために温度制御できる小型恒温槽を装着した.この装置中にガス透過ユニット,アンモニウムイオン定量用の反応コイルなどを組み入れ,精密測定の向上を目指した.ガス透過ユニットは,多孔質ポリテトラフルオロエチレン(PTFE)チューブとガラス管からなり,接続には樹脂製フェラル及びO-リングを用い,組み立てを容易にし,デッドボリュームも小さくした.ガス透過ユニット,反応コイル及び試料注入器などを恒温槽の中で一定温度に保つことにより,安定した再現性の良い測定が可能となった.ガス透過ユニット内に滞留する溶液を簡単かつ迅速に強制排除する機能も備えており,測定後はガス透過ユニット中の溶液を除いておくことにより,多孔質チューブの透過性能が長期間維持され,再活性化の操作をすることなく,高いガス透過効率を維持することができた.本システムを用いると,検量線は0〜10,0〜1.0ppmの範囲で良好な直線性を示し,1時間当たり30試料の分析が可能となった.実際に,河川水中のアンモニウムイオンの定量を行ったところ,インドフェノール誘導体/FIA/吸光光度法による定量値と良く一致し,試料に対する相対標準偏差は0.51,0.83%で,回収率は97〜98%と良好であった.
kn-abstract=A new on-line gas-permeation system was developed to enhance the efficiency and stability of gas permeation for a long time, and was applied to the determination of ammonium ion in river-water samples by the flow- injection method. The proposed gas-permeation system consists of a newly designed gas-permeation unit, a sample injection valve, a reaction coil and two six-way rotary valves in a constant-temperature oven. The gas- permeation unit was assembled using an inner micro porous polytetrafluoroethylene (PTFE) membrane tubing and an outer glass tube, which could be easily connected with one another using connectors with ferrules and o-rings. A sample solution was injected into a carrier containing 0.02 M sodium hydroxide, in which ammonium ion was converted to gaseous ammonia. The gaseous ammonia generated in the carrier passed through the micro porous PTFE membrane, was absorbed in a reagent solution and changed the pH of the reagent solution, which resulted in a color change to cresol red. The absorbance change of cresol red at 550 nm was measured using a visible detector with a flow cell (8μl, 10mm path). After the measurement, two six-way rotary valves were switched over from the flowing state to the drain state of the gas-permeation unit, and the residual solutions in the gas-permeation unit were removed and the PTFE membrane tubing was dried. By keeping the temperature of the oven at 40℃, the sensitivity and the reproducibility for the determination of ammonium ion was improved. Furthermore, the efficiency of gas permeation through the inner tubing could be kept high and constant for a long period without any procedure for reactivating the porous PTFE membrane tubing. Calibration graphs for ammonium ion were liner over ranges of 0 to 10 ppm and 0 to 1.0 ppm of N-NH(4)(+), and the sampling rate was 30 samples per hour. The detection limit for N-NH(4)(+) was about 0.01 ppm when the effective length of the membrane tubing was 5 cm. By using the proposed FIA system, ammonium ion in river-water samples was determined. The analytical results obtained by the proposed method showed a good correlation with those obtained using the indophenol derivatization/FIA method. The relative standard deviations of ten injections were 0.51% and 0.83% with concentrations of 2.73 ppm and 4.11 ppm, respectively. The recoveries of ammonium ion were found to be 97〜98%.
en-copyright=
kn-copyright=

en-aut-name=HiguchiKeiro
en-aut-sei=Higuchi
en-aut-mei=Keiro
kn-aut-name=樋口慶郎
kn-aut-sei=樋口
kn-aut-mei=慶郎
aut-affil-num=1
ORCID=

en-aut-name=InoueAkiko
en-aut-sei=Inoue
en-aut-mei=Akiko
kn-aut-name=井上亜希子
kn-aut-sei=井上
kn-aut-mei=亜希子
aut-affil-num=2
ORCID=

en-aut-name=TsuboiTomonori
en-aut-sei=Tsuboi
en-aut-mei=Tomonori
kn-aut-name=坪井知則
kn-aut-sei=坪井
kn-aut-mei=知則
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=東京化成工業(株)FIA研究グループ

affil-num=3
en-affil=
kn-affil=中国電力(株)技術研究センター

affil-num=4
en-affil=
kn-affil=岡山大学
en-keyword=gas permeation system
kn-keyword=gas permeation system
en-keyword=microporous polytetrafluoroethylene membrane tubing
kn-keyword=microporous polytetrafluoroethylene membrane tubing
en-keyword=FIA with gas permeation method
kn-keyword=FIA with gas permeation method
en-keyword=determination of ammonium ion
kn-keyword=determination of ammonium ion
en-keyword=river water sample
kn-keyword=river water sample
END

start-ver=1.4
cd-journal=joma
no-vol=99
cd-vols=
no-issue=1
article-no=
start-page=21
end-page=26
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2010
dt-pub=20100201
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=FFC Ceramic Water(TM) Enhances Plant Apyrase Activity
kn-title=FFC セラミック水(TM)による植物アピラーゼの活性化作用
en-subtitle=
kn-subtitle=
en-abstract=本報は，FFC セラミックス(TM)（�潟Gフエフシー・ジャパン）で調製した FFC セラミック水（FFC 水）の植物アピラーゼ（EC 3.6.1.5）の活性に及ぼす直接的な作用について調べたものである．FFC 水はアピラーゼがもつ ATP加水分解活性を促進し，その作用は反応液への添加量に依存した．先の無機元素分析結果から，FFC 水に含まれる主要な塩類はCa(2＋)であることが判明している．そこで，Ca(2＋)キレート剤EGTAを反応液へ加え，その影響について調べたところ，FFC 水による活性化作用は消失することが明らかとなった．また，FFC 水と類似の作用は，硫酸カルシウム，塩化カルシウムまたは硝酸カルシウムの添加で認められ，陰イオンの種類によって明確な違いはなかった．これらの結果から，FFC 水が植物アピラーゼに及ぼす活性化作用の一因は，セラミックスから遊離する Ca(2＋)に依存しているものと推察された．一方，アピラーゼ活性を指標として，使用済のセラミックスから調製した FFC 水の効果について検討したところ，未使用からの水と比べて，カルシウム濃度ならびに活性化作用の顕著な低下が認められた．このことは，継続的な使用によってセラミックスから遊離する塩類，特にカルシウムの溶出量が大きく変わることを意味し，アピラーゼを用いた本検定が，FFC 水の効果を定量的に確かめる方法の一つとして利用できると考えられた．以上，これらの結果を総合して，FFC水の植物酵素への直接的作用，ならびに植物への施用によって効果が現れる耐病性獲得作用との関連について考察した．
kn-abstract=The FFC ceramics(TM) from FFC Japan Co., Ltd. are now widely used in the fields of agriculture, fishery and food industry in Japan. Recently the FFC ceramic beads-based technology has been also applied to meet several environmental problems including pollution in sea, lakes and rivers. In this study the FFC ceramic water was tested for effect on plant enzyme, potato apyrase (EC 3.6.1.5; ATP-diphosphohydrolase), which hydrolyses nucleoside triphosphate (NTP) and -diphosphate (NDP) to produce corresponding nucleoside monophosphate (NMP) and inorganic phosphate (Pi). Addition of the FFC ceramic water to the enzyme reaction mixture markedly enhanced ATP-hydrolyzing activity, when used as ATP as substrate. However, the concomitant presence of Ca(2+) chelator, EGTA (O,O'-bis(2-aminoethyl)ethyleneglycol-N,N,N',N'-tetraacetic acid) with the FFC ceramic water, completely abolished the enzyme activation. In fact, exogenous calcium ion such as CaSO4 mimicked the FFC ceramic water. These results indicate that apyrase activation by the FFC ceramic water largely depends on calcium ions. On the other hand, when the FFC ceramic water prepared from "used" ceramics was tested for the apyrase activity, the enhanced effect on apyrase was decreased compared to the FFC ceramic water from "new" ones. This result, consistent with our present data covering concentration of calcium ions and conductivity, indicates that long and/or successive usage of the ceramic beads results in decrease of contents of released minerals, especially calcium ions. The apyrase-based enzyme assay presented here is probably applicable to estimate and quantify the effect of FFC ceramic water.
en-copyright=
kn-copyright=

en-aut-name=ToyodaKazuhiro
en-aut-sei=Toyoda
en-aut-mei=Kazuhiro
kn-aut-name=豊田和弘
kn-aut-sei=豊田
kn-aut-mei=和弘
aut-affil-num=1
ORCID=

en-aut-name=MatsuokaSachiko
en-aut-sei=Matsuoka
en-aut-mei=Sachiko
kn-aut-name=松岡祥子
kn-aut-sei=松岡
kn-aut-mei=祥子
aut-affil-num=2
ORCID=

en-aut-name=MeguroAkane
en-aut-sei=Meguro
en-aut-mei=Akane
kn-aut-name=目黒あかね
kn-aut-sei=目黒
kn-aut-mei=あかね
aut-affil-num=3
ORCID=

en-aut-name=HasegawaSachiko
en-aut-sei=Hasegawa
en-aut-mei=Sachiko
kn-aut-name=長谷川幸子
kn-aut-sei=長谷川
kn-aut-mei=幸子
aut-affil-num=4
ORCID=

en-aut-name=NishimuraTomio
en-aut-sei=Nishimura
en-aut-mei=Tomio
kn-aut-name=西村富生
kn-aut-sei=西村
kn-aut-mei=富生
aut-affil-num=5
ORCID=

en-aut-name=KunohHitoshi
en-aut-sei=Kunoh
en-aut-mei=Hitoshi
kn-aut-name=久能均
kn-aut-sei=久能
kn-aut-mei=均
aut-affil-num=6
ORCID=

en-aut-name=ShiraishiTomonori
en-aut-sei=Shiraishi
en-aut-mei=Tomonori
kn-aut-name=白石友紀
kn-aut-sei=白石
kn-aut-mei=友紀
aut-affil-num=7
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=赤塚植物園生物機能開発研究所

affil-num=4
en-affil=
kn-affil=赤塚植物園生物機能開発研究所

affil-num=5
en-affil=
kn-affil=赤塚植物園生物機能開発研究所

affil-num=6
en-affil=
kn-affil=岡山大学

affil-num=7
en-affil=
kn-affil=岡山大学
en-keyword=apyrase
kn-keyword=apyrase
en-keyword=ATP-diphosphohydrolase
kn-keyword=ATP-diphosphohydrolase
en-keyword=calcium ion
kn-keyword=calcium ion
en-keyword=FFC ceramic(TM)
kn-keyword=FFC ceramic(TM)
en-keyword=FFC ceramic water(TM)
kn-keyword=FFC ceramic water(TM)
END

start-ver=1.4
cd-journal=joma
no-vol=4
cd-vols=
no-issue=1
article-no=
start-page=93
end-page=100
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1999
dt-pub=19990226
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Dynamic Behavior of Bed Material around Bridge Pier under Abrupt Change of Water Pressure
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Major failure of structures usually occurs during flood flows due to scourin, sinking and sliding. These types of failure are considered to be in close relation to the dynamic behavior of bed material around the structures. Failure of bridges due to the phenomenon of scouring around piers is a common, natural problem of river hydraulics. Experiments were carried out to investigate the characteristics of pore water pressure and effective stresses in the bed material around a circular bridge pier under abrupt change of water pressure. A laboratory model was used to clarify the effect of the variation of water pressure to determine the mechanism of the collapse of circular bridge pier during flood or storm waves. The experimental results showed that the bed material under suddeen change in drop of water pressure near the pier was weakenend by an increase in excess pore pressure, followed by a considerable quick removal of bed material.
en-copyright=
kn-copyright=

en-aut-name=NagoHiroshi
en-aut-sei=Nago
en-aut-mei=Hiroshi
kn-aut-name=名合宏之
kn-aut-sei=名合
kn-aut-mei=宏之
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=MiaFaruque
kn-aut-sei=Mia
kn-aut-mei=Faruque
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学
en-keyword=Pore pressure
kn-keyword=Pore pressure
en-keyword=Effective stress
kn-keyword=Effective stress
en-keyword=Abrupt water pressure change
kn-keyword=Abrupt water pressure change
en-keyword=Scour
kn-keyword=Scour
en-keyword=Bridge pier
kn-keyword=Bridge pier
END

start-ver=1.4
cd-journal=joma
no-vol=15
cd-vols=
no-issue=
article-no=
start-page=11
end-page=15
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1955
dt-pub=19550325
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=EFFECT OF WATER LEVEL OF RIVER ON MINERAL SPRING (Continued)
kn-title=河川の水位が?泉に及ぼす影響について（続報）
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=From February to September 1954, observations were　made of the rates of flow and the water temperatures at a spring called　"Tanaka-no-Yu", Misasa Hot Springs, Tottori Prefecture. Simultaneously with these observations, the water level of the River Misasa and that of an irrigation　stream nearby were also determined. The procedures for the observations were the same as in the previous report. Comparing the results here obtaind wite those previously obtaind, and referring to the conclusions in the previous　report, the author has been led to the following conclusions. From the observations in the period from February to September, 1954, as from those in the period from June, 1953 to　January, 1954, a positive correlation　was found between the rate of flow and the water teperature, the correlarion coefficient being 0.828 (highly significant). The analsis of variance of the obseryed results showed that the rate of flow and the water temperature appear to be affected by the water levels of the River and of the irrigation stream, and also　by their interaction. This conclusion supports what was deduced in the previous report. The average water levels of the River and of the irrigation stream, the average
rates of flow and the average water temperatures, for the　period from June to September in 1953, were compared with　those for the period from June to September in 1954. The differences in the average water levels of the River, the average rates of flow and the average water temperatures are significant; while that in average water levels of the　stream is not significant. From this it may be concluded that the increase in the rate of flow and the rise of the water temperature were resulted from the upheaval of the water level of the River, which followed the construction of a dam there.
en-copyright=
kn-copyright=

en-aut-name=UmemotoShunji
en-aut-sei=Umemoto
en-aut-mei=Shunji
kn-aut-name=梅本春次
kn-aut-sei=梅本
kn-aut-mei=春次
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学温泉研究所化学部
END

start-ver=1.4
cd-journal=joma
no-vol=7
cd-vols=
no-issue=
article-no=
start-page=12
end-page=14
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1952
dt-pub=195208
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=FLUORINE CONTENT OF THERMAL WATERS IN TOTTORI PREFECTURE AND ITS RELATION TO MOTTLED TOOTH AND GOITER (2nd REPORT)
kn-title=温泉のフッ素合有量と斑状歯並に甲状腺腫の関係-2-
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The fluorine content of 67 samples of mineral waters in Misasa, Asozu, Togo, Hamamura, and Iwai Hot Springs was investigated by Zirconium-Alizarine Sulfonate method. It ranged from 1.5 to 15 mg. per liter, 3-6mg. per liter in the majority. Most of the river and well waters in the same districts contained no measurable amount of fluorifle．
In Misasa, Asozu, Togo and Hamamura Hot Springs 68-83 per　cent of the schoolchildren who take thermal waters habitually as drinking water suffer from mottled tooth. On　the contrary 2-10 per cent of the schoolchildren who do not drink thermal waters habitually showed mottled tooth. In Iwai no inhabitant uses thermal water as drinking water, so that the incidence of mottled tooth among them was only 2.8 per cent. Concerning the incidence of struma in the schoolchildren no relationship was proved between the occurrence of mottled tooth or fluorine content of thermal waters.
en-copyright=
kn-copyright=

en-aut-name=OndaSakue
en-aut-sei=Onda
en-aut-mei=Sakue
kn-aut-name=音田作衛
kn-aut-sei=音田
kn-aut-mei=作衛
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学温泉研究所内科
END

start-ver=1.4
cd-journal=joma
no-vol=29
cd-vols=
no-issue=1
article-no=
start-page=23
end-page=34
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1994
dt-pub=19941130
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Study on Water Quality of Surface Runoff and Groundwater Runoff on the Basis of Separation by a Numerical Filter
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In this study we investigated the water quality of surface runoff and groundwater runoff from the basins of the Yodo River and the Asahi River based on that separated by a numerical filter. The water quality of the surface runoff is greatly different from the groundwater runoff. The tendency of concentration change in accordance with river discharges is different from each other. The water qtiality of groundwater runoff changes with river discharges clockwise in many cases. The differences of COD and SS originating from those of population and industrial activities in each basin are found in the lower SS concentrations of the surface runoff and the COD cencentrations of the groundwater runoff. The nutrients and chlorine ion were investigated, too.
en-copyright=
kn-copyright=

en-aut-name=KawaraOsami
en-aut-sei=Kawara
en-aut-mei=Osami
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=FukumotoKohji
kn-aut-sei=Fukumoto
kn-aut-mei=Kohji
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Environmental and Civil Engineering, Faculty of Environmental Science and Technology

affil-num=2
en-affil=
kn-affil=Tottori Prefectural Office
END

start-ver=1.4
cd-journal=joma
no-vol=71
cd-vols=
no-issue=4-2
article-no=
start-page=1929
end-page=1936
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1959
dt-pub=19590405
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=The Experimental Studies on the Changes by Death, of the Vegetative Plankton (Diatoms) in the Organs of Drowned Bodies Report �V The Experimental Studies on the Changes by Death, of the Vegetative Plankton (Diatoms) in the Organs of Drowne Bodies at Winter
kn-title=溺死体臓器における植物性Plankton珪藻の死後における消長に関する実験的研究 第�V編 冬季における溺死体臓器における植物性Plankton珪藻の死後における消長について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The author has had an experiment on the changes by death, of the vegetative Plankton (diatoms) in the organs of drowned bodies at winter, and has acquired the following results: 1) There were the 11 Diatoms were found in the water of the river used for this exepriment. 2) Most Diatoms were found in the lung and femur even two months after death but in the heart, liver and kidney in which each organs became softon, found the Diatoms only one month after death. Even after treating those organs, just a few Diatoms could be found. 3) Among 11 Diatoms, Cymbells parva, Melosira islandica and Cyclotella comta were considered in the strength for resisting to decomposition; and it was Tabellaria fenestrata which was not found at the earliest time.
en-copyright=
kn-copyright=

en-aut-name=ShiragamiKiyotoshi
en-aut-sei=Shiragami
en-aut-mei=Kiyotoshi
kn-aut-name=白神清敏
kn-aut-sei=白神
kn-aut-mei=清敏
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部法医学教室
END

start-ver=1.4
cd-journal=joma
no-vol=71
cd-vols=
no-issue=2-2
article-no=
start-page=833
end-page=840
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1959
dt-pub=19590228
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=The Experimental Studies on the Changes by Death of the Vegetative Plankton (Diatoms) in the Organs of Drowned Bodies Report 2. The Experimental Studeis on the Changes by Death of the Vegetative Plankton (Diatoms) in the Organs of Drowned Bodies in Summar
kn-title=溺死体臓器における植物性Plankton珪藻の死後における浩長に関する実験的研究 第�U編 夏季の溺死体臓器における植物性Plankton珪藻の死後における消長について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The author, continuing the experiment of spring and autumn, had an experiment on the changes by death, of the vegetative Plankton (diatoms) in the organs of drowned bodies in summar, and has obtained the following results: 1. There were 11 diatoms from the water of the river as well as the experiments of spring and autumn. 2. There were 8 among 11 kinds of diatoms which were found in the lung for three days after death, the utmost limited time for use. 3. There were 3 among 11 kinds of diatoms which were found in the heart, liver and kidney for three days after death, the utmost limited time for use, they are Cymbella parva, Melosira islandica and Cyclotella comta which have been considered to have strength for resisting to decomposition. 4. Among these 11, 5 diatoms such as Cymbella parva, Navicula radiosa, Melosira islandica, Cyclotella comta, and Rhopalodia giba were found in the femur even two months after death. 5. From the experiment above, the author has come to the conclusions. In summar when the progress of decomposition is quick, the organs of drowned bodies melt and it is for use, the diatoms stay in the femur for the long term; this can be said to be the basis in the explanation whether drowning is the cause of death.
en-copyright=
kn-copyright=

en-aut-name=ShiragamiKiyotoshi
en-aut-sei=Shiragami
en-aut-mei=Kiyotoshi
kn-aut-name=白神清敏
kn-aut-sei=白神
kn-aut-mei=清敏
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部法医学教室
END

start-ver=1.4
cd-journal=joma
no-vol=71
cd-vols=
no-issue=1
article-no=
start-page=295
end-page=303
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1959
dt-pub=19590131
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=The Experimental Studies on the Changes by Death, of the Vegetative Plankton (Diatoms) in the Organs of Drowned Bodies Report 1 The Experimental Studies on the Changes by Death, of the Vegetative Plankton (Diatoms) in the Organs of Drowned Bodies at Spring and Autumn
kn-title=溺死体臓器における植物性Plankton珪藻の死後における消長に関する実験的研究 第�T編 春秋季における溺死体臓器における植物性Plankton珪藻の死後における消長について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The author has had an experiment on the changes by death, of the vegetative Plankton (Diatoms) in the organs of drowned bodies at spring and autumn, and has acquired the following results: 1) There were 11 diatoms from the water of the river which has been had for this experiment. Among these 11, 8 diatoms such as Cymbella naviculiformis, Cymbella parva, Navicula Placentula, Navicula radiosa, Nitzschia filiformis, Melosira islandica, Cyclotella comta and Rhopalodia gibba were found in the lung on the 20th day after death and in the femur on 60th day. 2) There were 2〜4 among 11 kinds of diatoms which were found in the heart, liver and kidney on the 20th day after death, the utmost limited time for use. 3) The diatoms which has been considered in the strength for resisting to decomposition were Cymbella parva, Melosira islandica, Cyclotella comta and Rhopalodia gibba. 4) From the results of these observations, the author has acquired the knowledges, which discovered the diatoms from the organs such as lung, heart, liver, kidney and femur of drowned bodies as far as they can be taken (used). This is supposed to be the basis in determining whether drowning is the cause of death.
en-copyright=
kn-copyright=

en-aut-name=ShiragamiKiyotoshi
en-aut-sei=Shiragami
en-aut-mei=Kiyotoshi
kn-aut-name=白神清敏
kn-aut-sei=白神
kn-aut-mei=清敏
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部法医学教室
END

start-ver=1.4
cd-journal=joma
no-vol=73
cd-vols=
no-issue=10-12
article-no=
start-page=749
end-page=758
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1961
dt-pub=19611230
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Studies on Diagnosis of Death from Drowning, by Means of Detection of the Vegetative Planktons (Diatoms) Part 1 Detection of the Vegetative Planktons (Diatoms) from Organs and Bones of the Rabbits That Were Drowned to Death after Injured on the Carotid Artery, during the Terminal Breathing by Strangulation and Concussion of the Brain
kn-title=植物性プランクトン珪藻の検出による溺死の研究補遺 第1編 頸動脈切傷による出血時,頭部打撲による脳震盪時および絞頸における終末呼吸時において河中に投じ死亡させたウサギの死体臓器ならびに骨から珪藻の検出について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The authors have experimented to detect the planktons from the drowned dead bodies under the special conditions. Rabbits were thrown into the ditch water after they were injured the carotid artery, during the terminal breathing by strangulation and concussion of the brain. It was tried to detect the planktons after the incinaration of organs and bones. Results are following; 1) Planktons could not be detected from organs and bones of rabbits that were put the ditch water into stomach with catheterization. 2) Planktons could be detected from the organs and bones of rabbits that were drowned to death after injured to the carotid artery, but longer the time after injured, lesser the plankton can be detected. 3) Excepting lung, there were no planktons in the organs and bones of the rabbits that were thrown into the river after death by bleeding. 4) From the organs and bones of the rabbits that were thrown into the river under standstill of therminal breathing by strangulation, several plankton could be detected though in small number. 5) Planktons could be detected from organs and bones of the rabbits that were drowned to death in the river under concussion of the brain.
en-copyright=
kn-copyright=

en-aut-name=KandaMizuho
en-aut-sei=Kanda
en-aut-mei=Mizuho
kn-aut-name=神田瑞穂
kn-aut-sei=神田
kn-aut-mei=瑞穂
aut-affil-num=1
ORCID=

en-aut-name=OkuyamaMasami
en-aut-sei=Okuyama
en-aut-mei=Masami
kn-aut-name=奥山正己
kn-aut-sei=奥山
kn-aut-mei=正己
aut-affil-num=2
ORCID=

en-aut-name=KamimuraOsamu
en-aut-sei=Kamimura
en-aut-mei=Osamu
kn-aut-name=上村修
kn-aut-sei=上村
kn-aut-mei=修
aut-affil-num=3
ORCID=

en-aut-name=HattoriHisashi
en-aut-sei=Hattori
en-aut-mei=Hisashi
kn-aut-name=服部久
kn-aut-sei=服部
kn-aut-mei=久
aut-affil-num=4
ORCID=

en-aut-name=TakemaruHideo
en-aut-sei=Takemaru
en-aut-mei=Hideo
kn-aut-name=竹丸英夫
kn-aut-sei=竹丸
kn-aut-mei=英夫
aut-affil-num=5
ORCID=

en-aut-name=ShiraishiMasumi
en-aut-sei=Shiraishi
en-aut-mei=Masumi
kn-aut-name=白石真澄
kn-aut-sei=白石
kn-aut-mei=真澄
aut-affil-num=6
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部法医学教室

affil-num=2
en-affil=
kn-affil=岡山大学医学部法医学教室

affil-num=3
en-affil=
kn-affil=岡山大学医学部法医学教室

affil-num=4
en-affil=
kn-affil=岡山大学医学部法医学教室

affil-num=5
en-affil=
kn-affil=岡山大学医学部法医学教室

affil-num=6
en-affil=
kn-affil=岡山大学医学部法医学教室
END

start-ver=1.4
cd-journal=joma
no-vol=73
cd-vols=
no-issue=4-6
article-no=
start-page=251
end-page=256
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1961
dt-pub=19610630
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Two Autopsy Cases That Were Hardly to Determine the Cause of Death for High Degree of Putrefaction
kn-title=腐敗が高度で死因の判定が困難であつた水死体の2鑑定例
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Authors have had occasions to perform autopsy on two bodies that were hardly to determine the cause of death for the high degree of putrefaction. One corpse. covered with flanket, was laid on ford and the other was discovered at the river side. In each instance, we could succeed the detection of vegetative plankton in the organs of general circulatory system. and then revealed that the cause of death were attributed to drowning.
en-copyright=
kn-copyright=

en-aut-name=KandaMizuho
en-aut-sei=Kanda
en-aut-mei=Mizuho
kn-aut-name=神田瑞穂
kn-aut-sei=神田
kn-aut-mei=瑞穂
aut-affil-num=1
ORCID=

en-aut-name=KamimuraOsamu
en-aut-sei=Kamimura
en-aut-mei=Osamu
kn-aut-name=上村修
kn-aut-sei=上村
kn-aut-mei=修
aut-affil-num=2
ORCID=

en-aut-name=OkuyamaMasami
en-aut-sei=Okuyama
en-aut-mei=Masami
kn-aut-name=奥山正己
kn-aut-sei=奥山
kn-aut-mei=正己
aut-affil-num=3
ORCID=

en-aut-name=HattoriHisashi
en-aut-sei=Hattori
en-aut-mei=Hisashi
kn-aut-name=服部久
kn-aut-sei=服部
kn-aut-mei=久
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部法医学教室

affil-num=2
en-affil=
kn-affil=岡山大学医学部法医学教室

affil-num=3
en-affil=
kn-affil=岡山大学医学部法医学教室

affil-num=4
en-affil=
kn-affil=岡山大学医学部法医学教室
END

start-ver=1.4
cd-journal=joma
no-vol=79
cd-vols=
no-issue=1-2
article-no=
start-page=43
end-page=49
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1967
dt-pub=19670228
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Studies on Genus Metagonimus
kn-title=メタゴニムス属吸虫に関する研究
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=1. By feeding Tribolodon hakonensis (Grunther), small fresh water fish caught in the Chikugo River, to dogs, it has been demonstrated that both Metagonimus yokogawai Katsurada and Metagonimus yokogawai var. takahashii Suzuki co-exist on this fish as parasites. In the feeding tests conducted with Tribolodon hakonensis caught in the Kando River it has been confirmed that Metagonimus yokogawai Katsurada alone lives on this fish as its host. From these findings, it is assumed that Tribolodon hakonensis proves to be the second intermediate host to Metagonimus yokogawai Katsurada and sometimes to Metagonimus yokogawai var. takahashii Suzuki as well. 2. By feeding tests with Plecoglossus altivelis (Tenminch & Schlegel) caught in the Takatsu River, it has also been proven that both Metagonimus yokogawai Katsurada and Metagonimus yakogawai var. takahashii Suzuki coexist on this fish as parasites. In the feeding tests conducted separately with Plecoglossus altivelis caught in the Kando River and the Chikugo River, it has been found that Metagonimus yokogawai Katsurada alone dwells on this fish as parasite. Judging from these, Plecoglossus altivelis can be the principal, second intermediate host to Metagonimus yokogawai Katsurada and also the same to Metagonimus yokogawai var. takahashii Suzuki. 3. By feeding tests with Salangichthys microdon Blecker caught at Kasumiga-ura Lake, it has been verified that both Metagonimus yokogawai Katsurada and Metagonimus yokogawai var. takahashii Suzuki live on this fish simultaneously.
en-copyright=
kn-copyright=

en-aut-name=TakahashiShozo
en-aut-sei=Takahashi
en-aut-mei=Shozo
kn-aut-name=高橋昌造
kn-aut-sei=高橋
kn-aut-mei=昌造
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=
END

start-ver=1.4
cd-journal=joma
no-vol=91
cd-vols=
no-issue=1-2
article-no=
start-page=183
end-page=196
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1979
dt-pub=19790228
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Bioassay by sea urchin eggs for heavy metal pollution
kn-title=ウニ卵を用いての重金属汚染の測定
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The effects of HgCl(2), CuCl(2),CdCl(2) and ZnCl(2) on the fertilization, cell division and pluteus formation of eggs from the sea urchins, Hemicentrotus purcherrimus and Temnopleurus toreumatics, were studied. Inhibition of the development of sea urchin eggs by these heavy metals was ameliorized by slag from both paper manufacturing effluent and the ended at the river mouth. The development of sea urchin eggs was completely inhibited by HgCl(2) at 10(-6)M. A concentration of 10(-4)M was needed for this inhibitory effect after HgCl(2) had been mixed with slag. Abnormalities of larvae were not observed with a concentration of 10(-4)M. The critical concentration of CuCl(2) was 10(-5)M. This dose to 10(-4)M after treatment with slag. CdCl(2) caused complete inhibition of spicule formation at 10(-5)M, resulting in the formation of permanent blastulae. A concentration of 10(-4)M was needed to obtain the same effects after slag treatment. The critical concentration of ZnCl(2) was 10(-5)M. The same effect was obtained with this concentration even after the addition of slag from river mouth slag, whereas after the addition of paper mill effluent, a concentration of 10(-4)M was needed.
en-copyright=
kn-copyright=

en-aut-name=KisidaAkira
en-aut-sei=Kisida
en-aut-mei=Akira
kn-aut-name=岸田昭
kn-aut-sei=岸田
kn-aut-mei=昭
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部第一生理学教室
END

start-ver=1.4
cd-journal=joma
no-vol=95
cd-vols=
no-issue=9-10
article-no=
start-page=1053
end-page=1062
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1983
dt-pub=19831030
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Studies on the availability of enterococci as an indicator of water pollution.
kn-title=腸球菌の水質汚染指標性に関する検討
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The MPN test of coli-form group is used as a biological indicator, but, as the bacteria designated in the coli-form group are not always derived from feces, the number of coli-form group bacteria obtained by the standard method results in a much higher count than expected. On the contrary, enterococci which are mostly derived from feces are thought to be more useful as pollution indicators. In the present work, the availability of enterococci as a biological indicator was studied. No enterococcus was detected in water which was assumed not to be pollution by feces of human or animal origin. Enterococci did not grow in river water under any condition, and died in river water much faster than the coli-form group. As the enterococci numbered as much as one-half to one twentieth of coli-form group in human feces, the author standardized the numbers of enterococci for the grades of water environment as one tenth of the coli-form group, and applied the system to field work. From the results in the field, it can be concluded that enterococci are more useful as a biological indicator of water pollution than the coli-form group.
en-copyright=
kn-copyright=

en-aut-name=MoriYasumi
en-aut-sei=Mori
en-aut-mei=Yasumi
kn-aut-name=森康巳
kn-aut-sei=森
kn-aut-mei=康巳
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部細菌学教室
en-keyword=Enterococcus
kn-keyword=Enterococcus
en-keyword=Coli-form group
kn-keyword=Coli-form group
en-keyword=Water pollution
kn-keyword=Water pollution
en-keyword=Biological indicator
kn-keyword=Biological indicator
END

start-ver=1.4
cd-journal=joma
no-vol=96
cd-vols=
no-issue=3-4
article-no=
start-page=377
end-page=384
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1984
dt-pub=19840430
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Studies on the applicability of enterococci and coli-form groups as indicators of water pollution
kn-title=腸球菌および糞便性大腸菌の水質汚染指標性に関する検討
en-subtitle=
kn-subtitle=
en-abstract=The applicability of using enterococci and coli-form groups as indicators of water pollution was assessed. In human feces, enterococci were 10 times more numerous than coli-forms. Suspension of feces in sterile 0.85% NaCl solution at 25℃ did not result in enterococci growth. Coli-form groups, however, grew remarkably well. Enterococci were incapable of growth and died in filtration-sterilized river water. On the contrary, coli-form groups demonstrated significant growth. Tre pathogeneic enterobacteria (Sal. typhi, Sh. sonnei) died within four days, faster than enterococci. A 50-case field sample presented a correlation coefficient of +0.71 between the number of enterococci and coli-form groups. This indicated that enterococci and coli-form groups both serve as indicators of fecal water pollution. Enterococci numbered 2.3 times more than coli-forms. Coli-form group detection was not suitable for routine work, as it requires incubation at 45.5℃. These results indicate that enterococci are applicable for the indication of water pollution and more available than coli-form groups.
kn-abstract=腸球菌および糞便性大腸菌の水質汚染指標性の検討を行ない次のようなことが判明した.○人糞便中に腸球菌は糞便性大腸菌の約10倍多く存在していた.○糞便水を25℃におくと糞便性大腸菌は増殖したが,腸球菌は増殖しなかった.○メンブランフィルター濾過滅菌河川水中でE. coliは微小濃度の栄養源を利用しているものと考えられる増殖を示した.一方,消化器系 病原菌(Sal. typhi, Sh. sonnei)は4日程度ですみやかに死滅するが,腸球菌はそれよりやや遅く死滅する良好な生残性を示した.○野外調査を行ない河川水から腸球菌・糞便性大腸菌の検出を行なった結果, 50例による両者の相関係数は+0.71で糞便汚染指標菌として相関性があることが示され,量的には腸球菌が糞便性大腸菌の2.3倍多く検出された.○検査における手技の簡便性を考察すると糞便性大腸菌の検出は培養温度(44.5℃)の管理がわずらわしく,ルチンとしては不向きであると考えられた.以上のことから腸球菌は糞便性大腸菌よりも公共用水の汚染指標として有用であると結論された.
en-copyright=
kn-copyright=

en-aut-name=KoujimaIzumi
en-aut-sei=Koujima
en-aut-mei=Izumi
kn-aut-name=国府島泉
kn-aut-sei=国府島
kn-aut-mei=泉
aut-affil-num=1
ORCID=

en-aut-name=KanataniTomohisa
en-aut-sei=Kanatani
en-aut-mei=Tomohisa
kn-aut-name=金谷誠久
kn-aut-sei=金谷
kn-aut-mei=誠久
aut-affil-num=2
ORCID=

en-aut-name=KumodeAkira
en-aut-sei=Kumode
en-aut-mei=Akira
kn-aut-name=口分田晃
kn-aut-sei=口分田
kn-aut-mei=晃
aut-affil-num=3
ORCID=

en-aut-name=NodaYasuko
en-aut-sei=Noda
en-aut-mei=Yasuko
kn-aut-name=野田泰子
kn-aut-sei=野田
kn-aut-mei=泰子
aut-affil-num=4
ORCID=

en-aut-name=FukuharaAkihiro
en-aut-sei=Fukuhara
en-aut-mei=Akihiro
kn-aut-name=福原明宏
kn-aut-sei=福原
kn-aut-mei=明宏
aut-affil-num=5
ORCID=

en-aut-name=MoriNoriko
en-aut-sei=Mori
en-aut-mei=Noriko
kn-aut-name=森徳子
kn-aut-sei=森
kn-aut-mei=徳子
aut-affil-num=6
ORCID=

en-aut-name=KanemasaYasuhiro
en-aut-sei=Kanemasa
en-aut-mei=Yasuhiro
kn-aut-name=金政泰弘
kn-aut-sei=金政
kn-aut-mei=泰弘
aut-affil-num=7
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=2
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=3
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=4
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=5
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=6
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=7
en-affil=
kn-affil=岡山大学医学部細菌学教室
en-keyword=Enterococcus
kn-keyword=Enterococcus
en-keyword=Fecal coli-form
kn-keyword=Fecal coli-form
en-keyword=Water pollution
kn-keyword=Water pollution
en-keyword=Biological indicator
kn-keyword=Biological indicator
END

start-ver=1.4
cd-journal=joma
no-vol=95
cd-vols=
no-issue=9-10
article-no=
start-page=863
end-page=869
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1983
dt-pub=19831030
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Fundamental studies on enterococci as a pollution indicator of water
kn-title=公共用水中の腸球菌測定法に関する基礎的検討
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In order to develop an enterococci assay method as a pollution indicator of water or waste water, the most probable number (MPN) method using BTB azide dextrose and the membrane filter (MF) method using m-enterococcus agar were compared as to usefulness and simplicity. The appropriate concentration of NaN(3) in the media to permit selective growth of enterococci was determined to be 0.025% NaN(3) in the case of the MPN method, and 0.04% in the case of the MF method. Three hundred specimens from river water were tested by the MPN and MF methods. The correlation coefficient between the results was high enough to draw the conclusion that both methods were useful. The MPN method can be recommended as a simple procedure, and the MF method as an accurate assay, especially when specimens contain small numbers of bacteria.
en-copyright=
kn-copyright=

en-aut-name=KoujimaIzumi
en-aut-sei=Koujima
en-aut-mei=Izumi
kn-aut-name=国府島泉
kn-aut-sei=国府島
kn-aut-mei=泉
aut-affil-num=1
ORCID=

en-aut-name=MoriYasumi
en-aut-sei=Mori
en-aut-mei=Yasumi
kn-aut-name=森康巳
kn-aut-sei=森
kn-aut-mei=康巳
aut-affil-num=2
ORCID=

en-aut-name=ShiodeJunji
en-aut-sei=Shiode
en-aut-mei=Junji
kn-aut-name=塩出純二
kn-aut-sei=塩出
kn-aut-mei=純二
aut-affil-num=3
ORCID=

en-aut-name=NakamuraTomoaki
en-aut-sei=Nakamura
en-aut-mei=Tomoaki
kn-aut-name=中村知明
kn-aut-sei=中村
kn-aut-mei=知明
aut-affil-num=4
ORCID=

en-aut-name=TerasakaKaoru
en-aut-sei=Terasaka
en-aut-mei=Kaoru
kn-aut-name=寺坂薫
kn-aut-sei=寺坂
kn-aut-mei=薫
aut-affil-num=5
ORCID=

en-aut-name=ShidaKentaro
en-aut-sei=Shida
en-aut-mei=Kentaro
kn-aut-name=志田健太郎
kn-aut-sei=志田
kn-aut-mei=健太郎
aut-affil-num=6
ORCID=

en-aut-name=HiraiYoshikazu
en-aut-sei=Hirai
en-aut-mei=Yoshikazu
kn-aut-name=平井義一
kn-aut-sei=平井
kn-aut-mei=義一
aut-affil-num=7
ORCID=

en-aut-name=KanemasaYasuhiro
en-aut-sei=Kanemasa
en-aut-mei=Yasuhiro
kn-aut-name=金政泰弘
kn-aut-sei=金政
kn-aut-mei=泰弘
aut-affil-num=8
ORCID=

en-aut-name=AkatsukaKazuya
en-aut-sei=Akatsuka
en-aut-mei=Kazuya
kn-aut-name=赤塚和也
kn-aut-sei=赤塚
kn-aut-mei=和也
aut-affil-num=9
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=2
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=3
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=4
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=5
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=6
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=7
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=8
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=9
en-affil=
kn-affil=岡山大学医学部附属臨床検査技師学校
en-keyword=Enterococcus
kn-keyword=Enterococcus
en-keyword=Coli-form group
kn-keyword=Coli-form group
en-keyword=Water pollution
kn-keyword=Water pollution
en-keyword=Biological indicator
kn-keyword=Biological indicator
END

start-ver=1.4
cd-journal=joma
no-vol=97
cd-vols=
no-issue=11-12
article-no=
start-page=1001
end-page=1007
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1985
dt-pub=19851230
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Studies on the fecal E. coli-form in the environmental waters III. Evaluation as an indicator of water pollution using the fecal E. coli-form
kn-title=環境水域における糞便性大腸菌群に関する研究 第III報 糞便性大腸菌群を用いた汚染指標とその評価
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=There was no distinct differnce between the two regression lines of total E. coli-form and fecal E. coli-form investigated from 1978 to 1980 and in 1985. Target value of fecal E. coli-form decided in the investigation from 1978 to 1980 was applied to the investigation in 1985, which was recognized to be appropriate. Sampling stations where the ratio (%) of fecal E. coli-form against total E. coli-form is high are located in the suburbs of small and middle cities without river basin sewerage system. At present, even in a case having attained the quality standard value of total E. coli-form, the same disposition as that for the unattained should be done if the case has not attained the quality value of fecal E. coli-form.
en-copyright=
kn-copyright=

en-aut-name=TanimotoHirokazu
en-aut-sei=Tanimoto
en-aut-mei=Hirokazu
kn-aut-name=谷本浩一
kn-aut-sei=谷本
kn-aut-mei=浩一
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部公衆衛生学教室
en-keyword=Fecal E. coli-form
kn-keyword=Fecal E. coli-form
en-keyword=water pollution
kn-keyword=water pollution
en-keyword=Biological indicator
kn-keyword=Biological indicator
en-keyword=Evaluation
kn-keyword=Evaluation
END

start-ver=1.4
cd-journal=joma
no-vol=97
cd-vols=
no-issue=7-8
article-no=
start-page=567
end-page=572
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1985
dt-pub=19850830
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Classification of fecal streptococci isolated from river water
kn-title=河川水汚染指標としての糞便レンサ球菌の菌種分類
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The authors classified the streptococci isolated from river water. Three hundred ninety strains of cocci were isolated from river water and classified. Of them, 362 strains (93%) proved to be enterococci derived from human and cattle feces. Only 28 strains, 7% of the isolates, were identified as S. faecalis subsp. liquefaciens which can be thought to be derived from insects. The results indicate that the classification of fecal streptococci is a reliable and useful indicator of water pollution.
en-copyright=
kn-copyright=

en-aut-name=KoujimaIzumi
en-aut-sei=Koujima
en-aut-mei=Izumi
kn-aut-name=国府島泉
kn-aut-sei=国府島
kn-aut-mei=泉
aut-affil-num=1
ORCID=

en-aut-name=OnoKeiji
en-aut-sei=Ono
en-aut-mei=Keiji
kn-aut-name=小野敬治
kn-aut-sei=小野
kn-aut-mei=敬治
aut-affil-num=2
ORCID=

en-aut-name=MoriYasumi
en-aut-sei=Mori
en-aut-mei=Yasumi
kn-aut-name=森康巳
kn-aut-sei=森
kn-aut-mei=康巳
aut-affil-num=3
ORCID=

en-aut-name=KanemasaYasuhiro
en-aut-sei=Kanemasa
en-aut-mei=Yasuhiro
kn-aut-name=金政泰弘
kn-aut-sei=金政
kn-aut-mei=泰弘
aut-affil-num=4
ORCID=

en-aut-name=OkabeAkinobu
en-aut-sei=Okabe
en-aut-mei=Akinobu
kn-aut-name=岡部昭延
kn-aut-sei=岡部
kn-aut-mei=昭延
aut-affil-num=5
ORCID=

affil-num=1
en-affil=
kn-affil=就実短期大学

affil-num=2
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=3
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=4
en-affil=
kn-affil=岡山大学医学部細菌学教室

affil-num=5
en-affil=
kn-affil=香川医科大学微生物学教室
en-keyword=Fecal streptococci
kn-keyword=Fecal streptococci
en-keyword=Enterococci
kn-keyword=Enterococci
en-keyword=Water pollution
kn-keyword=Water pollution
en-keyword=Biological indicator
kn-keyword=Biological indicator
END

start-ver=1.4
cd-journal=joma
no-vol=21
cd-vols=
no-issue=2
article-no=
start-page=9
end-page=19
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1987
dt-pub=19870305
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Influence of Sewage Treatment System on Water Quality in Kojima Lake
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=This study dealt with the characteristics of hydrodynamics of Kojima Lake and the influence of a regional sewage treatment system in construction on the lake. Clockwise and anticlockwise circulations are caused by seasonal winds in summer and winter, respectively. The distribution of a conservative material continuously discharged off the shore of the sewage treatment plant is scarcely affected by seasonal winds and river discharges. The sewage treatment system improves the water quality of the lake except T-N.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=KawaraOsami
kn-aut-sei=Kawara
kn-aut-mei=Osami
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=NasuKiyotaka
kn-aut-sei=Nasu
kn-aut-mei=Kiyotaka
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Civil Engineering

affil-num=2
en-affil=
kn-affil=Tokyo Construction Consultants co.,Ltd.
END

start-ver=1.4
cd-journal=joma
no-vol=16
cd-vols=
no-issue=1
article-no=
start-page=65
end-page=89
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1982
dt-pub=19820301
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Determination of Diffusion and Dispersion Parameters for Flow in Porous Media
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The purposes of this research is an investigation of the intrusion of sea water into coastal aquifers. For this subject, this paper deals with proposing rational methods of getting diffusion coefficient and dispersion parameter for flow in porous media in a laboratory. These parameters of soil are indispensable in order to apply an analytical approach or a numerical approach to actual salt water intrusion problems. Experimental apparatuses were constructed and test procedures were also developed to measure concentration behaviors in a saturated porous media by using electro conductivity probe. As the results, the diffusion coefficients for the Toyoura standard sand and the Asahi river sand determined by two methods, that is,
"Boltzman's transformation method" and "Instantaneous profile analysis method". The longitudinal coefficient of dispersion for one-dimensional flow was also determined by the least squares curve fitting method with a function of a certain range of seepage velocity.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=KohnoIichiro
kn-aut-sei=Kohno
kn-aut-mei=Iichiro
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=NishigakiMakoto
kn-aut-sei=Nishigaki
kn-aut-mei=Makoto
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Civil Engineering

affil-num=2
en-affil=
kn-affil=Department of Civil Engineering
END

start-ver=1.4
cd-journal=joma
no-vol=15
cd-vols=
no-issue=2
article-no=
start-page=147
end-page=164
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1981
dt-pub=19810330
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Hydraulics and Water Quality in Kojima Bay
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In this paper, characteristics of hydraulics and water quality in Kojima Bay are discussed based on field observations. The main results obtained are as follows. (1) The variation of flow rate in Kojima Bay has periods for 30 minutes to 2 hours. This characteristic is represented by a two-dimensional numerical simulation fairly well. (2) The local distributions of salinity and suspended solids show increase in the direction to the mouth of Kojima Bay. On the other hand, the distribution of COD(Mn) is nearly uniform in the whole area of the bay. Salinity appears to be influenced by river discharge sensitively but suspended solids does not. (3) The vertical distributions of salinity and suspended solids are similar. There are similar points between the cross-sectional average of water quality and surface water quality. (4) The surface water quality seems to be influenced by the variation of velocity.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=NagoHiroshi
kn-aut-sei=Nago
kn-aut-mei=Hiroshi
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=KawaraOsami
kn-aut-sei=Kawara
kn-aut-mei=Osami
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Civil Engineering

affil-num=2
en-affil=
kn-affil=Department of Civil Engineering
END

start-ver=1.4
cd-journal=joma
no-vol=6
cd-vols=
no-issue=
article-no=
start-page=15
end-page=19
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1952
dt-pub=195203
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=DIRECT COLORIMETRIC AND DIRECT TITRIMETRIC DETERMINATION OF CALCIUM WITH NEW REAGENT (SUPPLEMENTARY REPORT)
kn-title=新しい試薬によるカルシウムの直接比色定量法及び直接摘定法-続報-
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The author improved the accuracy of the direct colori metric method of calcium determination with azocal-A using an electrophotometer and made an investigation of interfering ions concerning this method. With this improved method calcium content of 0.2-several mgs per liter can be determined using only 5cc. of river water sample with an error of 土10%. Only 2 minutes are enough for a single determination and this method surpassed the ordinary oxalate method in accuracy.
en-copyright=
kn-copyright=

en-aut-name=AshizawaTakashi
en-aut-sei=Ashizawa
en-aut-mei=Takashi
kn-aut-name=芦沢峻
kn-aut-sei=芦沢
kn-aut-mei=峻
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学温泉研究所化学部
END

start-ver=1.4
cd-journal=joma
no-vol=22
cd-vols=
no-issue=
article-no=
start-page=45
end-page=62
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1988
dt-pub=19880331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=An Experimental Study on Levee Failure Caused by Seepage and Preventive Measures
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=There are two classifications of the mechanism of levee failure caused by floods; local seepage failure and progressive failure. The fundamental causes of levee failure produced by piping and erosion were studied and the safety of river leves during floods evaluated in terms of soil machanics. The critical hydraulic gradient and the process of progressive failure were obtained from one- and two- dimensional model experiments for piping and erosion. Problems inherent in and preventive measures against levee failure are discussed. In particular, effects of the Tsukinowa method, the most representative Japanese flood fighting method, were studied experimentally and improvements proposed.
en-copyright=
kn-copyright=

en-aut-name=KohnoIichiro
en-aut-sei=Kohno
en-aut-mei=Iichiro
kn-aut-name=河野伊一郎
kn-aut-sei=河野
kn-aut-mei=伊一郎
aut-affil-num=1
ORCID=

en-aut-name=NishigakiMakoto
en-aut-sei=Nishigaki
en-aut-mei=Makoto
kn-aut-name=西垣誠
kn-aut-sei=西垣
kn-aut-mei=誠
aut-affil-num=2
ORCID=

en-aut-name=TakeshitaYuji
en-aut-sei=Takeshita
en-aut-mei=Yuji
kn-aut-name=竹下祐二
kn-aut-sei=竹下
kn-aut-mei=祐二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Civil Engineering

affil-num=2
en-affil=
kn-affil=Department of Civil Engineering

affil-num=3
en-affil=
kn-affil=Department of Civil Engineering
END

start-ver=1.4
cd-journal=joma
no-vol=26
cd-vols=
no-issue=1
article-no=
start-page=61
end-page=73
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1991
dt-pub=19911130
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=The Model of Water Quality Management for the Hino River
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Lake Biwa is the largest lake in Japan, and one of the most important fresh water resources. The Hino River is the fourth largest river among the rivers which flow into Lake Biwa. The eutrophication of the lake has been warned since the 1960s. In order to improve the water quality of the lake, to decrease the loads through rivers is inevitable. Therefore, it is needed to predict the effects of measures to control pollutant loads and the influence of development in the basin on the loads from rivers before developing the basin and taking measures. This paper deals mainly with the model of water quality management for the Hino River and the effects of the development in the basin on the water quality. The model was formulated considering loads from forests, rice paddy fields, households, housing land, industrial factories. Using this model, a calculation system by a microcomputer was developed and the influence of urbanization of the basin was discussed.
en-copyright=
kn-copyright=

en-aut-name=KawaraOsami
en-aut-sei=Kawara
en-aut-mei=Osami
kn-aut-name=河原長美
kn-aut-sei=河原
kn-aut-mei=長美
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=DannoHideki
kn-aut-sei=Danno
kn-aut-mei=Hideki
aut-affil-num=2
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=KunimatsuTakao
kn-aut-sei=Kunimatsu
kn-aut-mei=Takao
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Civil Engineering

affil-num=2
en-affil=
kn-affil=Tohre Engineering, Ltd.

affil-num=3
en-affil=
kn-affil=Faculty of Agriculture, Shiga Prefectural Junior College
END

start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=1
article-no=
start-page=15
end-page=18
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2001
dt-pub=20011225
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Detection of metacercariae of Spelotrema capellae in crabs from Sanyo District, Japan
kn-title=山陽地方のカニにおける吸虫Spelotrema capellaeのメタセルカリアの感染状況
en-subtitle=
kn-subtitle=
en-abstract=The detection of metacercariae of Spelotrema capellae was investigated in crabs that inhabited the river mouth in the Sanyo District, Japan. The metacercaria was detected in crabs from 4 areas of the Hiroshima Prefecture and from 1 area of the Okayama Prefecture. From 2 areas in the Hiroshima Prefecture, the crab, Hemigrapsus penicillatus, showed the high prevalence of metacercariae. This crab could be a source of infection by Spelotrema capellae in domestic cats in these areas.
kn-abstract=吸虫Spelotrema capellaeの飼い猫への感染源を調べるために,広島県福山市を中心とした瀬戸内沿岸の河口域に生息するカニにおけるメタセルカリアの感染状況を調査した｡調査地のうち広島児内の4ヵ所と岡山県内の1ヵ所のケフサイソガニHemigrapsus PenicillatusからS. capellaeのメタセルカリアが検出された｡特に,過去に症例報告のあった猫の行動圏内にある福山市の2ヵ所のケフサイソガニからは高率に検出された｡したがってこれらの地方においては飼い猫へのS. capellaeの感染源は河口産のケフサイソガニであることが強く示唆された｡
en-copyright=
kn-copyright=

en-aut-name=SaitoTetsuro
en-aut-sei=Saito
en-aut-mei=Tetsuro
kn-aut-name=斎藤哲郎
kn-aut-sei=斎藤
kn-aut-mei=哲郎
aut-affil-num=1
ORCID=

en-aut-name=KuyaMitsuo
en-aut-sei=Kuya
en-aut-mei=Mitsuo
kn-aut-name=久家光雄
kn-aut-sei=久家
kn-aut-mei=光雄
aut-affil-num=2
ORCID=

en-aut-name=HashiguchiMasahiro
en-aut-sei=Hashiguchi
en-aut-mei=Masahiro
kn-aut-name=橋口正大
kn-aut-sei=橋口
kn-aut-mei=正大
aut-affil-num=3
ORCID=

en-aut-name=IkedaFumio
en-aut-sei=Ikeda
en-aut-mei=Fumio
kn-aut-name=池田文雄
kn-aut-sei=池田
kn-aut-mei=文雄
aut-affil-num=4
ORCID=

en-aut-name=YamaguchiHiroyuki
en-aut-sei=Yamaguchi
en-aut-mei=Hiroyuki
kn-aut-name=山口裕之
kn-aut-sei=山口
kn-aut-mei=裕之
aut-affil-num=5
ORCID=

en-aut-name=YoshidaKunie
en-aut-sei=Yoshida
en-aut-mei=Kunie
kn-aut-name=吉田邦恵
kn-aut-sei=吉田
kn-aut-mei=邦恵
aut-affil-num=6
ORCID=

en-aut-name=TonguYasumasa
en-aut-sei=Tongu
en-aut-mei=Yasumasa
kn-aut-name=頓宮廉正
kn-aut-sei=頓宮
kn-aut-mei=廉正
aut-affil-num=7
ORCID=

affil-num=1
en-affil=
kn-affil=斎藤獣医科病院

affil-num=2
en-affil=
kn-affil=広島県立教育センター

affil-num=3
en-affil=
kn-affil=福山市市民病院

affil-num=4
en-affil=
kn-affil=池田獣医科

affil-num=5
en-affil=
kn-affil=山口動物病院

affil-num=6
en-affil=
kn-affil=吉田動物クリニック

affil-num=7
en-affil=
kn-affil=岡山大学法学部
en-keyword=Spelotrema capellae
kn-keyword=Spelotrema capellae
en-keyword=ケフサイソガニ (crab)
kn-keyword=ケフサイソガニ (crab)
en-keyword=Hemigrapsus penicillatus
kn-keyword=Hemigrapsus penicillatus
en-keyword=メタセルカリア (metacercaria)
kn-keyword=メタセルカリア (metacercaria)
en-keyword=山陽地方 (Sanyo District)
kn-keyword=山陽地方 (Sanyo District)
END

start-ver=1.4
cd-journal=joma
no-vol=48
cd-vols=
no-issue=5
article-no=
start-page=447
end-page=482
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1999
dt-pub=1999
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=On-site analysis for nitrogen oxides using a newly developed portable flow injection analyzer
kn-title=ポータブルフローインジェクション分析計の開発と窒素
酸化物のオンサイト分析
en-subtitle=
kn-subtitle=
en-abstract=試料採取現場での迅速な分析，すなわちオンサイト分析のための新しいポータブルフローインジェクション分析計の開発を行った・このFIA装置では，160×160誉320（mm）の箱の中にダブルプランジ
ャーマイクロポンプ，試料注入語検出器及び反応恒温槽を組み入れ，重量8kgと小型・軽量化を達成し，持ち運び容易な分析計とした．特に，525nmの発光ダイオード（LED）を光源とする新規検出
器を開発することにより，小型，省電力化が可能となった．温度変化の大きな屋外での測定に耐えられるように，反応恒温槽も装備した．本FIA装置は交流100Vでのほか，直流12Vでも稼働し，カーバ
ッテリーや市販のポータブルバッテリーを電源とするオンサイト分析に対応できるよう設計した．カーバッテリーを電源とした場合は長時間の連続運転が可能である．測定データはメモリーカードや
RS232Cによりノート型パーソナルコンピュータへの通信も可能で，更に市販の表計算ソフトを利用してデータ処理が可能である．本装置を窒素酸化物のオンサイト分析に応用した．硝酸，亜硝酸イオン標準液による検量線は，0〜1・Oppm，0〜100ppbの範囲で直線性，再現性共に良好で，1時間当たり40〜50試料の分析が可能であった・検出限界（5／�W＝3）は硝酸，亜硝酸態窒素として0．5ppbと通常のFIAシステムを用いる場合と全く変わらない優れた性能を有することが分かった．河川水中の硝酸，亜硝酸イオンのオンサイト分析では10回の繰り返し測定における相対標準偏差は0．65％及び0．15％と良好な結果が得られた．また，血清中の一酸化窒素（NO）の酸化代謝物としての硝酸，亜硝酸イオン濃度のオンサイト分析を行い，良好な結果を得た．本研究で検討したポータブルバッテリーでは1回の充電で5時間の連続運転が可能であった．
kn-abstract=A new portable flow injection system was developed for on-site chemical analysis, which allows the rapid analysis of aqueous samples at sampling sites. The system comprises a
newly designed double-plunger micro pump, a six-way sample injector, a reaction coil in a thermostated compartment and a detector. All of these units are connected with 0.5
mmi.d. PTFE tubing. A visible detector is assembled using a maximum wavelength of 525 nm of a light-emitting diode (LED) and 540 nm of an interference filter. The system
is of the one-box type, whose dimensions are 160(W) x 160(H) x 320(D) mm, and is easy to carry to the analysis site; the weight is 8 kg. A thermostated compartment is
incorporated into the proposed system in order to be used outdoors, where temperatures are changeable. The system can workwith DC 12Vas well as AC 100V; therefore, a car
battery or a portable battery can be used as the power source. The analytical data can be memorized in IC cards or a note-book personal computer connected with a RS232C
cable. Furthermore, software on the market can be easily used. By using the proposed system, the on-site determination of nitrogen oxides, such as nitrate and nitrite, could be carried out. Calibration graphs for nitrate and nitrite ions were linear over ranges of 0
to 1.0ppm and 0 to 100ppb ofN-NOs and N-NO2 with good precision; the sampling rate was 40~50 samples per hour. The detection limit for N-NO3 and N-NO2 was 0.5 ppb. By using the proposed system, the on-site determination of nitrate and nitrite in river water samples was carried out. The relative standard deviations of ten injections
were 0.65% for nitrate and 0.15% for nitrite. Furthermore, nitrate and nitrite in biological samples as a metabolic products of nitric oxide, which have attracted a lot of attension as a messenger of diverse physiological processes, were also determined on-site with
high sensitivity. By using a car battery as a power source, the proposed system worked continuously. In addition, it worked for about 5 hours continuously with a portable battery.
en-copyright=
kn-copyright=

en-aut-name=HiguchiKeiro
en-aut-sei=Higuchi
en-aut-mei=Keiro
kn-aut-name=樋口慶郎
kn-aut-sei=樋口
kn-aut-mei=慶郎
aut-affil-num=1
ORCID=

en-aut-name=InoueAkiko
en-aut-sei=Inoue
en-aut-mei=Akiko
kn-aut-name=井上亜希子
kn-aut-sei=井上
kn-aut-mei=亜希子
aut-affil-num=2
ORCID=

en-aut-name=TamanouchiHiromitsu
en-aut-sei=Tamanouchi
en-aut-mei=Hiromitsu
kn-aut-name=玉之内啓満
kn-aut-sei=玉之内
kn-aut-mei=啓満
aut-affil-num=3
ORCID=

en-aut-name=HattoriTakayasu
en-aut-sei=Hattori
en-aut-mei=Takayasu
kn-aut-name=服部隆康
kn-aut-sei=服部
kn-aut-mei=隆康
aut-affil-num=4
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=5
ORCID=

affil-num=1
en-affil=
kn-affil=

affil-num=2
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=3
en-affil=
kn-affil=

affil-num=4
en-affil=
kn-affil=

affil-num=5
en-affil=
kn-affil=
en-keyword=on-site analysis
kn-keyword=on-site analysis
en-keyword=portable flow injection analyzer
kn-keyword=portable flow injection analyzer
en-keyword=determination of nitrogen oxide
kn-keyword=determination of nitrogen oxide
en-keyword=nitrate and nitrite
kn-keyword=nitrate and nitrite
END

start-ver=1.4
cd-journal=joma
no-vol=49
cd-vols=
no-issue=7
article-no=
start-page=529
end-page=536
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2000
dt-pub=2000
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Determination of trace elements in natural water samples by air-segmented flow-injection/ICP-MS after preconcentration with a chitosan-based chelating resin
kn-title=キトサンキレート樹脂前処理法を用いる空気分節試料導入/誘導結合プラズマ質量分析法による天然水中の多元素同時定量
en-subtitle=
kn-subtitle=
en-abstract=Ultratrace elements in natural water samples were determined simultaneously by air-segmented flow-injection/inductively coupled plasma-mass spectrometry(SFI/ICP-MS).A small volume of the sample solutions(80μl) was introduced into a nebulizer by an air-segmented flow-injection(SFI) system, and a maximum of fifteen elements were measured during each run.A chitosan-based chelating resin containing functional groups of iminodiacetate was used to separate and enrich analyte metal ions.A 50-fold preconcentration using 50ml of sample solutions was achieved by the proposed method, where 1ml of 0.1M nitric acid was added to residues after drying the chelating column effluent.At pH6, several heavy metals(Fe, Ni, Co, Cu, Zn, Ag, Cd, Pb and U) and rare earth elements(REEs) were quantitatively retained on the chelating resin column, whereas alkali and alkaline earth metals were eluted from the column by rinsing with 5ml of a 0.2M ammonium acetate solution.Metals adsorbed on the chelating resin column were recovered by elution with 10ml of 1M nitric acid.The proposed method was applied to the determination of trace elements in several natural water samples, such as river water and mineral drinking water.
kn-abstract=本法では,各種天然水中の極微量金属成分を同時定量する目的で空気分節試料導入/ICP-MSシステムを用いて,微少量試料(数十μl)を前処理せずにネブライザーに送り込み,多数の金属成分の定量が可能であった。共存主成分による質量干渉を受ける一部遷移金属や直接試料導入では感度の足りない元素については,イミノ二酢酸型キトサンキレート樹脂充填カラムによる分離?濃縮操作の併用によって更に信頼性の高いデータが得られることが分かった。前処理においては,体積1mlのミニカラムを用いて50mlの溶液試料から50倍濃縮を行い,試料?試薬?廃液すべてを少量化することができた。本ICP-MSシステムでは試料導入量は80μlで十分であり,1mlでも数回繰り返し測定が可能で,しかも多元素同時分析ができた。確立した分析法を用いて河川水や市販のミネラルウォーターに応用し,希土類を含め45種の微量元素の定量が可能となった。
en-copyright=
kn-copyright=

en-aut-name=NinomiyaTakahiko
en-aut-sei=Ninomiya
en-aut-mei=Takahiko
kn-aut-name=二宮崇彦
kn-aut-sei=二宮
kn-aut-mei=崇彦
aut-affil-num=1
ORCID=

en-aut-name=LeeKyue-Hyung
en-aut-sei=Lee
en-aut-mei=Kyue-Hyung
kn-aut-name=李啓?
kn-aut-sei=李
kn-aut-mei=啓?
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=3
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=4
en-affil=
kn-affil=岡山大学理学部化学科
en-keyword=ICP-MS
kn-keyword=ICP-MS
en-keyword=segmented-flow injection
kn-keyword=segmented-flow injection
en-keyword=chelating resin
kn-keyword=chelating resin
en-keyword=chitosan
kn-keyword=chitosan
en-keyword=iminodiacetic functional group
kn-keyword=iminodiacetic functional group
en-keyword=natural waters
kn-keyword=natural waters
en-keyword=preconcentration
kn-keyword=preconcentration
END

start-ver=1.4
cd-journal=joma
no-vol=52
cd-vols=
no-issue=9
article-no=
start-page=811
end-page=877
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2004
dt-pub=2004
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Synthesis of dithiocarbamate-chitosan resin and its adsorption behavior for trace metals
kn-title=ジチオカルバミン酸型キトサン樹脂の合成と金属の捕集挙動
en-subtitle=
kn-subtitle=
en-abstract=A chitosan-based resin possessing the dithiocarbamate moiety (DTC-chitosan resin) was synthesized using cross-linked chitosan as a base material. The adsorption behavior of trace metal ions on the DTC-chitosan resin was systematically examined by packing it in a mini-column (1 ml of the resin) and measuring the recovery by ICP-MS. The resin could adsorb almost 100% of 7 kinds of metals(Cu, Mo, Ag, Te, W, Hg and Bi) at pH ranges from acidic to neutral. However, elution of these metals from the resin was difficult. In this study, we improved the recovery efficiency by a pretreatment of the resin: the resin was added to 100 ml of a 0.1 M copper sulfate solution, stirred for 24 h and washed sufficiently with 1 M nitric acid and water. With this pretreatment, metals adsorbed on 1 ml of the resin were readily eluted with 1 M nitric acid (10 ml). This method was applied to the determination of metals in river-water samples; the RSDs (10-fold preconcentration) were within 5%.
kn-abstract=キレート官能基としてジチオカルバミン酸を架橋キトサンに導入した樹脂を合成した．ジチオカルバミン酸型キトサン樹脂への金属捕集挙動はカラム法を用いて誘導結合プラズマ質量分析法（ICP-MS）により評価した．銅，モリブデン，銀，テルル，タングステン，水銀，ビスマスは幅広いpH範囲で樹脂に捕集された．これらのうち，水溶液中に陽イオンとして存在する銅，銀，テルル，水銀，ビスマスは，キレート生成により樹脂に捕集され，モリブデン，タングステンのように酸素酸として存在する金属は，キレート生成とイオン交換により吸着していると考えられる．この樹脂は通常の溶離酸濃度では金属の溶離が困難であったので，試料処理前に樹脂をあらかじめ0.1 Mの銅イオン溶液とかくはんし，樹脂内部の強い吸着サイトに銅を吸着させておくことで，金属の溶離を改善することに成功した．この前処理をした樹脂1 mlを用いて捕集した金属は，1 M硝酸10 mlでほぼ100％回収可能であった．本法を河川水中の微量金属の定量に応用したところ，相対標準偏差5％ 以内で定量可能であった．
en-copyright=
kn-copyright=

en-aut-name=NinomiyaTakahiko
en-aut-sei=Ninomiya
en-aut-mei=Takahiko
kn-aut-name=二宮崇彦
kn-aut-sei=二宮
kn-aut-mei=崇彦
aut-affil-num=1
ORCID=

en-aut-name=OshitaKoji
en-aut-sei=Oshita
en-aut-mei=Koji
kn-aut-name=大下浩司
kn-aut-sei=大下
kn-aut-mei=浩司
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=2
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=3
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=4
en-affil=
kn-affil=岡山大学理学部化学科
en-keyword=chitosan resin
kn-keyword=chitosan resin
en-keyword=dithiocarbamate
kn-keyword=dithiocarbamate
en-keyword=heavy metals
kn-keyword=heavy metals
en-keyword=elution method
kn-keyword=elution method
en-keyword=preconcentartion
kn-keyword=preconcentartion
END

start-ver=1.4
cd-journal=joma
no-vol=53
cd-vols=
no-issue=4
article-no=
start-page=345
end-page=351
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2004
dt-pub=2004
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Highly sensitive determination of boron with 1,8-dihydroxynaphthalene-3,6-disulfonic acid in ultrapurified water by fluorescence detection/flow-injection analysis
kn-title=クロモトロープ酸を用いる高感度蛍光検出/フローインジェクション分析法による超純水中の極微量ホウ素の定量
en-subtitle=
kn-subtitle=
en-abstract=Boron as boric acid was determined as a complex with chromotropic acid at pH 6.0 in an aqueous medium by fluorescence detection/flow-injection analysis. The complex was detected by measuring the fluorescence intensities (λ(ex) = 313 nm, λ(em) = 360 nm). EDTA was used as a buffer component with the role of a masking agent to metal ions. The background fluorescence of chromotropic acid could be decreased by mixing with 0.1 M ammonia water after complex formation, resulting in a stable baseline. The calibration graph was rectilinear over 10(?9)?10(?6) mol dm(?3) (M), and the detection limit was 5×10(?10) M (S/N = 3). The reproducibility was 3.61% (n = 10, with the peak height) at 6×10(?9) M of boron and sample throughput was 40 h(?1). Applications to river water, ion-exchanged water and distilled water could be achived without any pretreatments. For the analysis of ultrapurified water, an evaporation/preconcentration procedure was carried out, because the concentration was under the LOD and no reference water which could be used for the carrier solution or preparation of the reagent solutions.
kn-abstract=超純水中の極微量ホウ素を定量するために，クロモトロープ酸を用いるホウ素の蛍光検出/フローインジェクション（FIA）法の諸条件を再検討し，検出限界を10分の1の5×10(−10) Mに下げることに成功し，大幅な感度向上を達成した．クロモトロープ酸とホウ酸との反応生成物の蛍光を利用するホウ素のFIA法における残存クロモトロープ酸の蛍光強度を低下させるために，アンモニア水を加え，アルカリ性にした．緩衝液としてエチレンジアミン四酢酸を含む酢酸緩衝液を用い，金属のマスキングを兼ねたpH調整を行うことにより，非常に安定なベースラインを得ることに成功した．流量，反応コイル長，試料注入量，試薬濃度等のFIAパラメーターについて感度向上の観点から最適化を行い，ホウ素錯体の蛍光測定（励起波長λ(ex)＝313 nm，蛍光波長λ(em)＝360 nm）により，前処理なしでホウ素10(−9) Mの定量が可能となった．S/N＝3での検出限界は5×10(−10) M（5 ppt）で，現在最も高感度な定量法である．ホウ素6×10(−9) Mの10回繰り返し実験の相対標準偏差（RSD）は3.6％（n＝10）であり，1時間に40試料の分析が可能であった．河川水，蒸留水，イオン交換水などに存在する程度の金属イオン及び陰イオンは定量を妨害しない．本法により，イオン交換水，蒸留水中に存在するホウ素は直接定量できた．超純水中に存在する微量のホウ素（10(−10) Mレベル）は，加熱濃縮操作法を併用することにより，定量可能となった．
en-copyright=
kn-copyright=

en-aut-name=LiZhen Hai
en-aut-sei=Li
en-aut-mei=Zhen Hai
kn-aut-name=李貞海
kn-aut-sei=李
kn-aut-mei=貞海
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部

affil-num=2
en-affil=
kn-affil=岡山大学理学部

affil-num=3
en-affil=
kn-affil=岡山大学理学部
en-keyword=boron
kn-keyword=boron
en-keyword=chromotropic acid
kn-keyword=chromotropic acid
en-keyword=ultrapurified water
kn-keyword=ultrapurified water
en-keyword=fluorescence/flow injection analysis
kn-keyword=fluorescence/flow injection analysis
END

start-ver=1.4
cd-journal=joma
no-vol=78
cd-vols=
no-issue=1
article-no=
start-page=15
end-page=24
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1966
dt-pub=19660130
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=異形吸虫類に関する研究　第2編 ドジョウに寄生するメタゴニムス属吸虫の鳥類に対する感染試験およびその成虫について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Metacercariae parasitic on the loach living in Ashida River, Hiroshima Prefecture were examined by applying the artificial gastric juice digestion method to twenty loach which weighed from 28g to 46g, As a result, Metagonimus yokogawai was the largest in number, that is, its average number per loach was 18.8 on scales, 3.1 on gills, and 2.8 on muscles. Next to the largest was Centrocestus nycticoracis i.e., 5.1 on gills. Echinostoma cinetorchis, 1.6 on gills. Echinostoma hortense, 2.5 on the inter-ventral membrane. Echinochasmus perfoliatus, 0.9 on gills.
Metacercariae of Metagonimus yokogawai thus collected were given to nine birds and also to five rats for the sake of contrast through mouth in such a way as follows; 50 metacercariae to every five chickens, from 250g to 325g in weight, the same to every two canaries 82g and 88g in weight, the same to every two white-eyes, 46g and 48g in weight and the same to every five rats, from 98g to 120g. Afterwards, observation and studies were made on the number of metacercariae parasitic site, number of eggs in the uterus, first day of ovulation, size of eggs, and developing speed of the body in different hosts.
As a result, of 50 metacercariae given to each host, average 6.4 were detected in the chicken, 6 in the canary, 1.5 in the white-eye, and 17 in the rat. In both the cases of birds and rats, the parasitic site was mainly below the middle part of the small intestine. Difference in the developing speed of the body in different hosts was not perceived. Ovulation began on the ninth day in rat, on the 10th day in chicken, on 18th, in canary, and in the case of the white-eye, ovulation had not yet begun on the 10th day when it was dissected. Average size of eggs taken from 200eggs was 0.0324×0.0208mm.
Hereby the author has decided to name this species as Metagonimus yokogawai takahashii.
en-copyright=
kn-copyright=

en-aut-name=OkahashiKiyoshi
en-aut-sei=Okahashi
en-aut-mei=Kiyoshi
kn-aut-name=岡橋清
kn-aut-sei=岡橋
kn-aut-mei=清
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=日本寄生虫病研究所
END

start-ver=1.4
cd-journal=joma
no-vol=104
cd-vols=
no-issue=7-8
article-no=
start-page=747
end-page=761
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1992
dt-pub=199208
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Chemical and physiological changes of serum and thoracic-duct lymph in the dog with experimental obstructive jaundice and/or disorder of liver circulation
kn-title=実験的閉塞性黄疸および肝循環障害における血清と胸管リンパ液組成の変動に関する研究
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A long-term study on the chemical and physiological changes of serum and thoracic-duct lymph in the dog with a ligated common bile duct and/or artificial liver circulation was performed. The influencee of ligation of the common bile duct appeared earlier in the thoracic-duct lymph than in the serum. The portal pressure did not increase in the dog with a ligated common bile duct, but the lymph flow of the thoracic duct was 3 times that before ligation, which would prevent the rapid stagnation of bile pigment in the liver. The portal pressure was not elevated after ligation of the hepatic artery. The cholesterol level in the thoracic-duct lymph was about half of that in the serum. In the dog with ligature of the common bile duct, the serum total cholesterol level was elevated with the elevation of serum bilirubin, whereas that in the lymph of the thoracic duct was not elevated with the elevation of the bilirubin level in the lymph. These findings suggested that cholesterol would not easily enter into the lymphatic route. The serum GPT level increased during the first week after ligation of the hepatic artery, and decreased thereafter. However, after ligation of the common bile duct, the GPT level increased for several weeks after the first week of ligation. The pattern of GPT by both ligations seemed to be cross-crossed. The marked change in the total bilirubin level in the lymph of the thoracic duct suggested its close relation with the lymphatic system. It was proved possible to secure a tube into the thoracic duct for over three weeks by the use of a U-type connector and jacket-type plaster cast.
en-copyright=
kn-copyright=

en-aut-name=UedaYuzo
en-aut-sei=Ueda
en-aut-mei=Yuzo
kn-aut-name=上田祐造
kn-aut-sei=上田
kn-aut-mei=祐造
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部第一外科学教室
en-keyword=実験的肝障害
kn-keyword=実験的肝障害
en-keyword=閉塞性黄疸
kn-keyword=閉塞性黄疸
en-keyword=肝循環障害
kn-keyword=肝循環障害
en-keyword=胸管リンパ液
kn-keyword=胸管リンパ液
en-keyword=胸管カヌレーション
kn-keyword=胸管カヌレーション
END

start-ver=1.4
cd-journal=joma
no-vol=105
cd-vols=
no-issue=5-6
article-no=
start-page=399
end-page=408
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1993
dt-pub=1993
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=A nutritional and metabolic assessment of a cardiopulmonary bypass technique without donor blood
kn-title=無血体外循環法における栄養，代謝の検討
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A nutritional and metabolic assessment of a cardiopulmonary bypass technique without donor blood was made in 23 patients undergoing open heart surgery (non-donor blood group). For comparison, 14 patients receiving cardiopulmonary bypass with donor blood prime (donor blood group) were also evaluated. 1)Serum transferrin level showed significantly more rapid recovery in the non-donor blood group compared to the donor blood group on the 7th post operative day. 2)Total protein, serum albumin, arm muscle circumference, creatinine-height-index and triceps skin fold showed no significant differences between the two groups. 3)Total lymphocyte count as an indicator of immune status showed a significant increase in the non-donor blood group on the 3rd post operative day. 4)The recovery from the postoperative hypermetabolic state was more smoothly achieved in the non-donor group blood group than in the donor blood group. In conclusion, the cardiopulmonary bypass technique without donor blood is a safe and effective means of open heart surgery, not only saving blood but also preventing undue, infectious and/or hypersensitive diseases.
en-copyright=
kn-copyright=

en-aut-name=HigashiRyouhei
en-aut-sei=Higashi
en-aut-mei=Ryouhei
kn-aut-name=東良平
kn-aut-sei=東
kn-aut-mei=良平
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部第二外科学教室
en-keyword=無血体外循環法
kn-keyword=無血体外循環法
en-keyword=栄養評価
kn-keyword=栄養評価
en-keyword=代謝亢進
kn-keyword=代謝亢進
en-keyword=血液希釈
kn-keyword=血液希釈
END

start-ver=1.4
cd-journal=joma
no-vol=105
cd-vols=
no-issue=3-4
article-no=
start-page=381
end-page=394
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1993
dt-pub=1993
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Prepositus hypoglossi neurons projecting to the posterior vermis of the rat cerebellum
kn-title=ラット小脳虫部後葉に投射する舌下神経前位核ニューロン
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Distribution of efferent neurons projecting to the posterior vermal lobules of the rat cerebellum was studied in the prepositus hypoglossi nucleus (PRH) and the nucleus of Roller (R) by retrograde labeling with wheat germ agglutinin-horseradish peroxidase (WGA-HRP). After a single injection of the tracer into each lobule of the anterior (lobule V) and posterior vermis (Lobules VI-IX), medium-sized to small neurons in the caudal half of the PRH and in the R were labeled. An abundance of labeled neurons were found after WGA-HRP infection into either lobule IX or VII, but were less numerous following injection into lobule VIII. Retrograde double labeling with fluorescent dyes showed that a considerable number of neurons in the caudal part of the PRH and in the R sent divergent axons to vermal lobule IX and the parafloccular lobe of the cerebellar hemisphere. Following retrograde neuronal labeling combined with immunohistochemistry, about 70% of the corticotropin releasing factor (CFR)-like immunopositive neurons which clustered in the caudal half of the PRH were found to project their axons to the posterior vermis.
en-copyright=
kn-copyright=

en-aut-name=KuroseKunihiko
en-aut-sei=Kurose
en-aut-mei=Kunihiko
kn-aut-name=黒瀬邦彦
kn-aut-sei=黒瀬
kn-aut-mei=邦彦
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部第三解剖学教室
en-keyword=舌下神経前位核
kn-keyword=舌下神経前位核
en-keyword=小脳虫部
kn-keyword=小脳虫部
en-keyword=逆行性標識法
kn-keyword=逆行性標識法
en-keyword=Corticotropin releasing factor (CRF)
kn-keyword=Corticotropin releasing factor (CRF)
en-keyword=免疫組織化学
kn-keyword=免疫組織化学
END

start-ver=1.4
cd-journal=joma
no-vol=105
cd-vols=
no-issue=3-4
article-no=
start-page=303
end-page=316
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1993
dt-pub=1993
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Orthotopic liver transplantation in dogs : Post-operative changes in plasma-free amino acid levels and the meaning of these changes
kn-title=同所性肝移植の実験的研究　肝移植手術における血漿遊離アミノ酸の変動とその意義について
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=To determine the viability of livers after transplantation, three groups of experimental models were prepared (i. e., liver transplantation by the modified Starzl method ; hepatic cold-ischemia with cold ischemic time equal to transplantation time ; and simple laparotomy with sugar loading). Changes in plasma-free amino acid levels were investigated.
The results showed an elevation of total amino acid levels in the early stage of a viable liver transplant. In addition, a decrease in the molar ratio of branched chain amino acids and aromatic amino acids was observed during the rejection period. The results also confirmed an increase in ornithine level, NH3, and ornithine carbamyl transferase as well as a decrease in the citrulline level, and unchanged arginine. A disturbance in the reaction in the urea cycle during the second stage was considered the cause. Among the plasma amino acids, alanine showed the greatest increase during the rejection period. This might be attributed to an acceleration in alanine release in the periphery, and an abnormal glucose-alanime cycle.
As described above, examining changes in plasma-free amino acid levels may be an effective index of the viability of a liver transplant, both in the early stage and during the rejection poriod.
en-copyright=
kn-copyright=

en-aut-name=MatsudaTadakazu
en-aut-sei=Matsuda
en-aut-mei=Tadakazu
kn-aut-name=松田忠和
kn-aut-sei=松田
kn-aut-mei=忠和
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学医学部第一外科学教室
en-keyword=同所性肝移植
kn-keyword=同所性肝移植
en-keyword=血漿中遊離アミノ酸
kn-keyword=血漿中遊離アミノ酸
en-keyword=拒絶反応
kn-keyword=拒絶反応
en-keyword=尿素回路
kn-keyword=尿素回路
en-keyword=Fischer 比
kn-keyword=Fischer 比
END

start-ver=1.4
cd-journal=joma
no-vol=5
cd-vols=
no-issue=1
article-no=
start-page=1
end-page=12
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1998
dt-pub=19980920
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Topography and deposits of terrace of Yokohama Town, Northeast Japan
kn-title=横浜町に発達する段丘に地形と堆積物
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Higher, middle and Lower Terraces (Quaternary) have been distinguished in Yokohama Town, Aomori Prefecture. The Higher Terraces are subdivided into three terraces, H1,H2 and H3. They are distributed in hills. H1 and H2 deposites are composed of gravels of fan deposits. H3 deposits are composed of gravels, sands and mud of alluvial plain deposits. The Middle Terraces are subdivided into three terraces, M1, M1' and M2, and occupy almost all terraces in Yokohama Town. These deposits are composed of beach (sand with gravel) and fan (gravel) deposits. The Lower Terraces are subdivided into two terraces, L1 and L2. The L1 Terrace is distributed in limited area along coast and thought to be composed of beach deposits. The L2 Terrace is distributed in limited area along river and composed of braided stream deposits.
en-copyright=
kn-copyright=

en-aut-name=SuzukiShigeyuki
en-aut-sei=Suzuki
en-aut-mei=Shigeyuki
kn-aut-name=鈴木茂之
kn-aut-sei=鈴木
kn-aut-mei=茂之
aut-affil-num=1
ORCID=

en-aut-name=MiyawakiAkiko
en-aut-sei=Miyawaki
en-aut-mei=Akiko
kn-aut-name=宮脇明子
kn-aut-sei=宮脇
kn-aut-mei=明子
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部地球科学科

affil-num=2
en-affil=
kn-affil=
en-keyword=terrace
kn-keyword=terrace
en-keyword=beach deposits
kn-keyword=beach deposits
en-keyword=fan deposits
kn-keyword=fan deposits
en-keyword=Quaternary
kn-keyword=Quaternary
END

start-ver=1.4
cd-journal=joma
no-vol=55
cd-vols=
no-issue=9
article-no=
start-page=707
end-page=713
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2006
dt-pub=20061117
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Development of Computer-Controlled Flow Injection Instruments and Its Application to Determination of Nitrate, Nitrite, and Ammonium Ions in Environmental Samples
kn-title=コンピュータ制御されたフローインジェクション分析装置の開発と環境水中の硝酸イオン，亜硝酸イオン，アンモニウムイオン定量への応用
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Flow injection analysis (FIA) systems with low power consumption and personal-computer control were developed by using solenoid pumps and an LED detector. Both programs for controlling the system and acquiring measurement data were written using LabVIEW. The FIA system was applied to the determination of nitrite ion in river-water samples based on diazotization and coupling reactions. Linear calibration graphs were obtained with the combination of pump(s) and photometric detector in the concentration range of nitrite ion at 0.5?3.0 × 10?6 M. Nitrate and nitrite ions were also determined simultaneously by the system by using a Cd/Cu reduction column and a by-pass flow. Determination of ammonia in river-water samples was also realized by the system with a modified indophenol reaction.
en-copyright=
kn-copyright=

en-aut-name=JoichiYasutaka
en-aut-sei=Joichi
en-aut-mei=Yasutaka
kn-aut-name=城市康隆
kn-aut-sei=城市
kn-aut-mei=康隆
aut-affil-num=1
ORCID=

en-aut-name=NarongLenghor
en-aut-sei=Narong
en-aut-mei=Lenghor
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=TakayanagiToshio
en-aut-sei=Takayanagi
en-aut-mei=Toshio
kn-aut-name=高柳俊夫
kn-aut-sei=高柳
kn-aut-mei=俊夫
aut-affil-num=3
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=4
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=5
ORCID=

en-aut-name=UraNobuo
en-aut-sei=Ura
en-aut-mei=Nobuo
kn-aut-name=浦信夫
kn-aut-sei=浦
kn-aut-mei=信夫
aut-affil-num=6
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=2
en-affil=
kn-affil=岡山大学大学院自然科学研究科機能分子化学専攻

affil-num=3
en-affil=
kn-affil=岡山大学大学院自然科学研究科機能分子化学専攻

affil-num=4
en-affil=
kn-affil=岡山大学大学院自然科学研究科機能分子化学専攻

affil-num=5
en-affil=
kn-affil=岡山大学大学院自然科学研究科機能分子化学専攻

affil-num=6
en-affil=
kn-affil=株式会社相馬光学
en-keyword=Flow injection analysis
kn-keyword=Flow injection analysis
en-keyword=LabVIEW control
kn-keyword=LabVIEW control
en-keyword=solenoid pumps
kn-keyword=solenoid pumps
en-keyword=nitrate ion
kn-keyword=nitrate ion
en-keyword=nitrite ion
kn-keyword=nitrite ion
en-keyword=ammonia
kn-keyword=ammonia
END

start-ver=1.4
cd-journal=joma
no-vol=55
cd-vols=
no-issue=9
article-no=
start-page=715
end-page=720
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2006
dt-pub=20061117
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Highly Efficient and Automatic Collection/Concentration with Chelating Resin for Inductively Coupled Plasma Atomic Emission Spectroscopy
kn-title=誘導結合プラズマ発光分析のためのキレート樹脂を用いる高効率自動前処理濃縮
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=An automatically controlled collection/concentration system for ICP-AES was developed. Elements were collected with small chelating disks and chelating resin with the iminodiacetate moiety packed in a line filter. This column was installed in a 6-way valve on the pretreatment system, which could be connected on line to ICP-AES. The flow rate was 1 ml min?1 and conditioning of the chelating disk was carried out by flowing 0.5 M ammonium acetate (pH 5.5) for 2 min, sampling for 5 min and washing for 1 min. Elution was done by passing through 2 M HNO3 at 1.3 ml min?1 for 1 min. Bi, Cd, Co, Cr, Cu, Mn, Ni, Pb and V could be determined with 5.0 ml of the sample solution. The enrichment factors were 3?15 times and the collection efficiencies were better than 80%. The detection limits (LOD) were from 0.003 for Mn to 0.311 for Bi, which were several 10 to 100-times lower than that of normal LOD of ICP-AES. This method was successfully applied to the determination of these metals in tap and river-water samples.
en-copyright=
kn-copyright=

en-aut-name=YamamotoTakako
en-aut-sei=Yamamoto
en-aut-mei=Takako
kn-aut-name=山本貴子
kn-aut-sei=山本
kn-aut-mei=貴子
aut-affil-num=1
ORCID=

en-aut-name=AkhmadSabarudin
en-aut-sei=Akhmad
en-aut-mei=Sabarudin
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=NoguchiOsamu
en-aut-sei=Noguchi
en-aut-mei=Osamu
kn-aut-name=野口修
kn-aut-sei=野口
kn-aut-mei=修
aut-affil-num=3
ORCID=

en-aut-name=TakayanagiToshio
en-aut-sei=Takayanagi
en-aut-mei=Toshio
kn-aut-name=高柳俊夫
kn-aut-sei=高柳
kn-aut-mei=俊夫
aut-affil-num=4
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=5
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=6
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学理学部化学科

affil-num=2
en-affil=
kn-affil=岡山大学大学院自然科学研究科機能分子化学専攻

affil-num=3
en-affil=
kn-affil=岡山大学大学院自然科学研究科機能分子化学専攻

affil-num=4
en-affil=
kn-affil=岡山大学大学院自然科学研究科機能分子化学専攻

affil-num=5
en-affil=
kn-affil=岡山大学大学院自然科学研究科機能分子化学専攻

affil-num=6
en-affil=
kn-affil=岡山大学大学院自然科学研究科機能分子化学専攻
en-keyword=automated collection/concentration
kn-keyword=automated collection/concentration
en-keyword=chelating disk and chelating resin
kn-keyword=chelating disk and chelating resin
en-keyword=ICP-AES
kn-keyword=ICP-AES
en-keyword=heavy metals
kn-keyword=heavy metals
END

start-ver=1.4
cd-journal=joma
no-vol=8
cd-vols=
no-issue=1
article-no=
start-page=29
end-page=38
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2001
dt-pub=20010920
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Relationship between the water quality of three main rivers and geology of Okayama Prafecture
kn-title=岡山県の主要3河川の水質と地質の関係
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Concentrations of inorganic major components (Ca2+, Mg2+, Na+, K+, ΣFe, AI3+, HCO3, SO4, CI-, NO3, F- and SiO2) were measured in 57 water samples from three main rivers, the Yoshii, Asahi and Takahashi Rivers and their tributaries. The water quality is discussed in relation to the geological environment in the drainage basin of three rivers. The following results were obtained from the investigation. The degree of influence of rocks on the water quality was limestone≫basic rocks>clastic rocks>andesite>rhyolite>gramite. The influence of geology is clear in the riverhead but it is obscure in the downstream. The concentration of each component increases generally from the upper stream to the lower stream but that of SiO2 only decreases in the lower stream. Kaolinite is a stable mineral as a weathering prodouct from the ion compositions of three rivers. In a rough estimation, Yoshii, Asahi and Takahashi Rivers weather 303,000t, 433,000t and 1,033,000t of the rocks respectively from their basins in a year. The syrface of their basins are scraoed off 0.06mm, 0.11mm and 0.15mm respectively in a year.
en-copyright=
kn-copyright=

en-aut-name=Kinoshitatakuya
en-aut-sei=Kinoshita
en-aut-mei=takuya
kn-aut-name=木下卓也
kn-aut-sei=木下
kn-aut-mei=卓也
aut-affil-num=1
ORCID=

en-aut-name=MatsudaToshihiko
en-aut-sei=Matsuda
en-aut-mei=Toshihiko
kn-aut-name=松田敏彦
kn-aut-sei=松田
kn-aut-mei=敏彦
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Ministry of Justice

affil-num=2
en-affil=
kn-affil=Department of Earth Sciences, Faculity of Science, Okayama University
en-keyword=Water quality
kn-keyword=Water quality
en-keyword=River water
kn-keyword=River water
en-keyword=Geology of basin
kn-keyword=Geology of basin
en-keyword=Yoshii River
kn-keyword=Yoshii River
en-keyword=Asahi River
kn-keyword=Asahi River
en-keyword=Takahashi River
kn-keyword=Takahashi River
en-keyword=Okayama Prefecture
kn-keyword=Okayama Prefecture
END

start-ver=1.4
cd-journal=joma
no-vol=9
cd-vols=
no-issue=1
article-no=
start-page=25
end-page=30
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2002
dt-pub=20020920
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=The slope map of the Kibi plateau
kn-title=傾斜区分図と第三紀層の分布でみた吉備高原の地形発達史
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A peneplain is evident in Takahashi area from slope map presented in this paper. The map shows that older gentle valleys exist in the Kibi Plateau. Miocene marine deposits are colored on the slope map. The Miocene marine deposits mostly distribute along the older valleys. The distribution of the Paleogene gravel river deposits is not cintrolled by topography.
en-copyright=
kn-copyright=

en-aut-name=FujiwaraTakao
en-aut-sei=Fujiwara
en-aut-mei=Takao
kn-aut-name=藤原貴生
kn-aut-sei=藤原
kn-aut-mei=貴生
aut-affil-num=1
ORCID=

en-aut-name=SuzukiShigeyuki
en-aut-sei=Suzuki
en-aut-mei=Shigeyuki
kn-aut-name=鈴木茂之
kn-aut-sei=鈴木
kn-aut-mei=茂之
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Ryuten Astro Park

affil-num=2
en-affil=
kn-affil=Department of Earth Sciences, Faculity of Science, Okayama University
en-keyword=Kibi Plateau
kn-keyword=Kibi Plateau
en-keyword=slope map
kn-keyword=slope map
en-keyword=Miocene
kn-keyword=Miocene
END

start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=1
article-no=
start-page=31
end-page=37
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2005
dt-pub=20051231
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=中国淮河流域付近の入梅前の時期における大気場や陸面状態の季節進行 (1998年の事例解析)
kn-title=Seasonal evolution of atmospheric and land surface conditions around the Huaihe River Basin in China in the pre-Meiyu stage of 1998
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=　Seasonal evolution of atmospheric and land surface conditions around the Huaihe River Basin in China in the pre-Meiyu stage of 1998 were examined, mainly based on the GAME re-analysis data.
 Around the Huaihe River Basin in China (just to the nront of the Changjiang River Basin), although the air temperature increased rapidly already in early June (the Meuyu front was located to the south of that region), the specific humidity did not increas so much at time. In addition, the latent heat supplied from the ground there decreased from late May to early June, compared to that before early May.
 The time mean southerly wind component across the low-level baroclinic Zone (although not so strong as in the mature stage of the Meiyu) invaded into Central Cjina during late April to early May. On the other hand, the relatively strong wind region once retreated southward in the middle of May associated with the onset of the Southeast Asian monsoon, and the calm wind region with frequent appearance of the surface high was seen around the Huaihe River Basin from late May to early June. Thus the present study shows that the Huaihe River Basin once experiences the rather drier stage just before the onset stage of the mature Meiyu there.
en-copyright=
kn-copyright=

en-aut-name=IkedaShoichiro
en-aut-sei=Ikeda
en-aut-mei=Shoichiro
kn-aut-name=池田祥一郎
kn-aut-sei=池田
kn-aut-mei=祥一郎
aut-affil-num=1
ORCID=

en-aut-name=KatoKuranoshin
en-aut-sei=Kato
en-aut-mei=Kuranoshin
kn-aut-name=加藤内藏進
kn-aut-sei=加藤
kn-aut-mei=内藏進
aut-affil-num=2
ORCID=

en-aut-name=TsukamotoOsamu
en-aut-sei=Tsukamoto
en-aut-mei=Osamu
kn-aut-name=塚本修
kn-aut-sei=塚本
kn-aut-mei=修
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Graduate School of Natural Science and Technology, Okayama University

affil-num=2
en-affil=
kn-affil=Faculty of Education, Okayama University

affil-num=3
en-affil=
kn-affil=Graduate School of Natural Science and Technology, Okayama University
en-keyword=arid region in China and the Meiyu front
kn-keyword=arid region in China and the Meiyu front
en-keyword=seasonal evlution in East Asia
kn-keyword=seasonal evlution in East Asia
en-keyword=Land surface condition around the Meiyu front
kn-keyword=Land surface condition around the Meiyu front
END

start-ver=1.4
cd-journal=joma
no-vol=13
cd-vols=
no-issue=1
article-no=
start-page=19
end-page=25
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2006
dt-pub=20060331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Eastward extension of the Baiu Front on the surface weather maps in ralation to zonal scale of the area with strong low-level southerly wind toward the front
kn-title=天気図上の梅雨前線出現域の変動と前線帯への下層南風域の東西スケールについて
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Eastward extension of the Baiu front in relation to zonal scale of the area with strong low-level southerly wind toward the front was examined based on the operational surface weather maps and the NCEP/NCAR re-analysis data mainly for the mature Baiu period (15 June to 31 July) from 1991 to 2000. During that period, the Baiu front on the surface weather maps appeared from the Changjiang River Basim to the east of the Japan Islands accompanied by the strong low-level southerly wind toward it in a wide zonal scala(〜3500km), in many cases. However, the situations when the appesrance of the Baiu front was limited to the western part of the Japan Islands or limited to its eastern part are sometimes found with relatively narrow zonal acale of the strong low-level southerly wind toward the front, although the appearance frequency of such cases was not so high. As such the present results illustrate the importance of the zonal scale of the subtropical high for the spatial activity of the Baiu front.
en-copyright=
kn-copyright=

en-aut-name=NakayamaYuuki
en-aut-sei=Nakayama
en-aut-mei=Yuuki
kn-aut-name=中山祐貴
kn-aut-sei=中山
kn-aut-mei=祐貴
aut-affil-num=1
ORCID=

en-aut-name=OwadaMichio
en-aut-sei=Owada
en-aut-mei=Michio
kn-aut-name=大和田道雄
kn-aut-sei=大和田
kn-aut-mei=道雄
aut-affil-num=2
ORCID=

en-aut-name=Ikedashoichiro
en-aut-sei=Ikeda
en-aut-mei=shoichiro
kn-aut-name=池田祥一郎
kn-aut-sei=池田
kn-aut-mei=祥一郎
aut-affil-num=3
ORCID=

en-aut-name=KatoKuranoshin
en-aut-sei=Kato
en-aut-mei=Kuranoshin
kn-aut-name=加藤内藏進
kn-aut-sei=加藤
kn-aut-mei=内藏進
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Graduate School of Education, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Science, Aichi University of Education

affil-num=3
en-affil=
kn-affil=Faculty of Education, Okayama University

affil-num=4
en-affil=
kn-affil=Graduate School of Natural Science and Technology, Okayama University
en-keyword=variation of the Baiu front
kn-keyword=variation of the Baiu front
en-keyword=southerly wind in the subtropical high area
kn-keyword=southerly wind in the subtropical high area
en-keyword=zonal extension of the Baiu front
kn-keyword=zonal extension of the Baiu front
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=5
article-no=
start-page=631
end-page=635
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2008
dt-pub=20080510
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Minimization of Sample Volume with Air-segmented SampleInjection and the Simultaneous Determination of TraceElements by ICP-MS
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The application of inductively coupled plasma mass spectrometry (ICP-MS) to forensic chemistry was studied. The
developed method, air-segmented sample injection (ASSI) coupled with ICP-MS, allowed the determination of about 25
elements at the sub-ppb level with only 0.2 ml of a sample solution. The optimum sample flow rate was found to be 0.4
ml min?1, along with a sample suction time of 30 s. The proposed method was validated by determining trace elements in river-water certified reference material (SLRS-4) issued by National Research Council Canada. The analytical results of the proposed method were in good agreement with the certified values. This method was successfully applied to a human hair sample, the volume of which was 3 ml.
en-copyright=
kn-copyright=

en-aut-name=NoguchiOsamu
en-aut-sei=Noguchi
en-aut-mei=Osamu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=2
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
END

start-ver=1.4
cd-journal=joma
no-vol=3
cd-vols=
no-issue=1
article-no=
start-page=127
end-page=134
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1998
dt-pub=19980114
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Effect of Matric Suction on Shear Characteristics of Unsaturated Fraser River Sand
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=This paper discusses the shear strength and volume change characteristics of a loose Fraser River sand. Suction-controlled simple shear tests were carried out for the unsaturated sand. Drained tests for the saturated sand were also carried out for the comparison with the unsaturated sand. The increase of the shear strength of the sand with the matric suction is very small and there is almost no increase of that over 20 kPa of the matric suction. The suppression effect of the matric suction on the volume change bahavior during shear is small, and the degree of dilation increases with the increase of the matric suction.
en-copyright=
kn-copyright=

en-aut-name=ShimadaKiyoshi
en-aut-sei=Shimada
en-aut-mei=Kiyoshi
kn-aut-name=島田清
kn-aut-sei=島田
kn-aut-mei=清
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学
en-keyword=unsaturated sand
kn-keyword=unsaturated sand
en-keyword=shear strength
kn-keyword=shear strength
en-keyword=simple shear test
kn-keyword=simple shear test
en-keyword=matric suction
kn-keyword=matric suction
en-keyword=volume change
kn-keyword=volume change
en-keyword=dilatancy
kn-keyword=dilatancy
END

start-ver=1.4
cd-journal=joma
no-vol=3
cd-vols=
no-issue=1
article-no=
start-page=31
end-page=36
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1998
dt-pub=19980114
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Computational analysis of contamination in Kojima Lake using upwind-type finite element method
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=We have computed the phase of spreading contaminations in Kojima Lake by using the upwind-type finite element method. We have treated the two cases: the pollutant flows from the Sasagase river and from the Kurashiki River. We see that the upwind-type finite element method is effective in both cases, when the diffusion constant is quite small.
en-copyright=
kn-copyright=

en-aut-name=SasakiToru
en-aut-sei=Sasaki
en-aut-mei=Toru
kn-aut-name=佐々木徹
kn-aut-sei=佐々木
kn-aut-mei=徹
aut-affil-num=1
ORCID=

en-aut-name=KajiwaraTsuyoshi
en-aut-sei=Kajiwara
en-aut-mei=Tsuyoshi
kn-aut-name=梶原毅
kn-aut-sei=梶原
kn-aut-mei=毅
aut-affil-num=2
ORCID=

en-aut-name=IshikawaHirofumi
en-aut-sei=Ishikawa
en-aut-mei=Hirofumi
kn-aut-name=石川洋文
kn-aut-sei=石川
kn-aut-mei=洋文
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=Upwind-type
kn-keyword=Upwind-type
en-keyword=Finite element method
kn-keyword=Finite element method
en-keyword=Kojima Lake
kn-keyword=Kojima Lake
END

start-ver=1.4
cd-journal=joma
no-vol=10
cd-vols=
no-issue=1
article-no=
start-page=83
end-page=88
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2005
dt-pub=20050228
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Sustainable Groundwater Exploitation under Natural Conditions in Southwest Ghana
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Groundwater has been recognised as the most cost-effective option of safe water supply to rural communities in Ghana. The demand for potable water has led to the drilling of a large number of boreholes in many parts of the country. To establish the threshold of groundwater development from storage in a major river catchment (Pra River) in South-West Ghana, studies on recharge to the weathered aquifer and statistical evaluations of specific capacity and potential yield have been carried out. The SACSMA conceptual hydrological modelling system was used for the recharge estimate. With recharge rate of 50 mm/yr, the natural groundwater resources in the basin was estimated to support a maximum withdrawal of 12 l/s for a 10 hour per day pumping. The groundwater resources potential of 1.6 l/sｋ�u could be considered the threshold of groundwater exploitation in similar river basins in South-West Ghana. A study into the relation between permeability and recharge under different conditions and scenarios is required to define their limiting role in groundwater resources development.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=Kankam-YeboahKwabena
kn-aut-sei=Kankam-Yeboah
kn-aut-mei=Kwabena
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=DarkoPhilip K.
kn-aut-sei=Darko
kn-aut-mei=Philip K.
aut-affil-num=2
ORCID=

en-aut-name=NishigakiMakoto
en-aut-sei=Nishigaki
en-aut-mei=Makoto
kn-aut-name=西垣誠
kn-aut-sei=西垣
kn-aut-mei=誠
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=CSIR-Water Research Institute

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=Groundwater storage
kn-keyword=Groundwater storage
en-keyword=recharge
kn-keyword=recharge
en-keyword=aquifer
kn-keyword=aquifer
en-keyword=specific capacity
kn-keyword=specific capacity
en-keyword=base flow
kn-keyword=base flow
en-keyword=hydrologic budget
kn-keyword=hydrologic budget
END

start-ver=1.4
cd-journal=joma
no-vol=10
cd-vols=
no-issue=1
article-no=
start-page=75
end-page=81
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2005
dt-pub=20050228
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Rapid Impact Assessment Matrix (RIAM) - An Analytical Tool in the Prioritization of Water Resources Management Problems in Ghana
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The rapid impact assessment (RIAM), which was developed in Denmark, is a new tool for the execution of environmental impact assessments. RIAM is quite flexible, transparent and leaves a permanent record, which can be independently checked, validated or updated. RIAM has successfully been used to prioritize water resources management problems in Ghana in the order of which problems call for the most urgent attention. The priority list was easily validated and accepted to be the true reflection of the situation at a national workshop in which experts and representatives from water agencies, donor agencies, university faculties and departments, research institutes, private institutions and organizations including Non Governmental Organizations (NGOs) participated. The study has shown that RIAM, which can also be used in a developing country like Ghana, is a very useful tool in such prioritization process as has been applied in this exercise.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=Kankam-YeboahKwabena
kn-aut-sei=Kankam-Yeboah
kn-aut-mei=Kwabena
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=AsareEnoch B.
kn-aut-sei=Asare
kn-aut-mei=Enoch B.
aut-affil-num=2
ORCID=

en-aut-name=Gyau-BoakyePhilip
en-aut-sei=Gyau-Boakye
en-aut-mei=Philip
kn-aut-name=Gyau-BoakyePhilip
kn-aut-sei=Gyau-Boakye
kn-aut-mei=Philip
aut-affil-num=3
ORCID=

en-aut-name=NishigakiMakoto
en-aut-sei=Nishigaki
en-aut-mei=Makoto
kn-aut-name=西垣誠
kn-aut-sei=西垣
kn-aut-mei=誠
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=CSIR-Water Research Institute

affil-num=3
en-affil=
kn-affil=CSIR-Water Research Institute

affil-num=4
en-affil=
kn-affil=岡山大学
en-keyword=Water resources management problems
kn-keyword=Water resources management problems
en-keyword=prioritization
kn-keyword=prioritization
en-keyword=impact indicators
kn-keyword=impact indicators
en-keyword=RIAM
kn-keyword=RIAM
en-keyword=river basins
kn-keyword=river basins
en-keyword=Ghana
kn-keyword=Ghana
END

start-ver=1.4
cd-journal=joma
no-vol=10
cd-vols=
no-issue=1
article-no=
start-page=57
end-page=65
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2005
dt-pub=20050228
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Remote Sensing of 1998 and 2000 Floods in Greater Dhaka, Bangladesh: Experiences from Catastrophic and Normal events
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=This paper is an attempt to develop a series of maps that precisely depict flood prone areas in Greater Dhaka, Bangladesh using remote sensing techniques. Multi-temporal RADARSAT SAR data were acquired and employed to delineate open water flood boundary during the floods of 1998 and 2000. Using a threshold algorithm, SAR data is segregated into water and non-water areas. The empirical threshold value was obtained by using visual interpretation technique, local knowledge of the study site and by deriving corresponding pixel values to land/water from each image. The result demonstrated that 53 percent of the study area was heavily inundated in 1998 flood which is the largest submerged area during a catastrophic scenario. In contrast, 35.32 percent area was flooded during the year 2000 which represents the area under water for a normal event. Using the reference data acquired from field visit, derived flood maps were further validated. Moderate accuracy is obtained for all flood maps, however, July 1998 image attained the highest overall accuracy (86%) in the dataset. The derived flood maps are expected to be useful to mitigate losses of lives and property from river water flooding in Greater Dhaka. Furthermore, this information would be worthwhile to develop an efficient flood disaster management system.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=DewanAshraf M.
kn-aut-sei=Dewan
kn-aut-mei=Ashraf M.
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=AlamMd. Mahabubul
kn-aut-sei=Alam
kn-aut-mei=Md. Mahabubul
aut-affil-num=2
ORCID=

en-aut-name=NishigakiMakoto
en-aut-sei=Nishigaki
en-aut-mei=Makoto
kn-aut-name=西垣誠
kn-aut-sei=西垣
kn-aut-mei=誠
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=Department of Geography & Environment, University of Dhaka

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=SAR
kn-keyword=SAR
en-keyword=open water flood
kn-keyword=open water flood
en-keyword=1998 and 2000 floods
kn-keyword=1998 and 2000 floods
en-keyword=Greater Dhaka
kn-keyword=Greater Dhaka
en-keyword=RADARSAT
kn-keyword=RADARSAT
END

start-ver=1.4
cd-journal=joma
no-vol=10
cd-vols=
no-issue=1
article-no=
start-page=23
end-page=28
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2005
dt-pub=20050228
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Computational Analysis of Currents Generated in Kojima Lake Based on Updated Topographical Data
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Topographical data of Kojima Lake have been updated by applying data obtained after dredging. Together with tide level of Kojima Bay and water levels of Kurashiki River and Sasagase river, the information was incorporated in computational analysis of unsteady flows generated in the lake when the water was discharged from Kojima Lake to Kojima, Bay. A finite element method was applied to equations governing unsteady flows, and the transition of discharge was obtained.
en-copyright=
kn-copyright=

en-aut-name=WatanabeMasaji
en-aut-sei=Watanabe
en-aut-mei=Masaji
kn-aut-name=渡辺雅二
kn-aut-sei=渡辺
kn-aut-mei=雅二
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=LiuYing
kn-aut-sei=Liu
kn-aut-mei=Ying
aut-affil-num=2
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=WangMing Jun
kn-aut-sei=Wang
kn-aut-mei=Ming Jun
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=water environment
kn-keyword=water environment
en-keyword=finite element method
kn-keyword=finite element method
en-keyword=numerical simulation
kn-keyword=numerical simulation
END

start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=1
article-no=
start-page=141
end-page=149
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20070315
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Rows-of-houses Preservation in Maniwa City of Katsuyama Area, Okayama Prefecture
kn-title=岡山県真庭市勝山地区の町並み保存活動とその課題
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The aim of the study is to explain the present condition of the rows-of-houses preservation policy of Okayama Prefecture and to examine the samples in Maniwa city, Katsuyama area. Besides, the interview investigation was mainly conducted for residents in the rows-of-houses of preservation area in Katsuyama for giving the concluding remarks about the findings. The traditional private houses in Katsuyama preservation area were partially restored in the 1985-89 and 1993-97 fiscal years by the subsidy from the prefecture. Furthermore, Katsuyamacho at that time founded the subsidy system for maintaining rows-of-houses preservation area (about 25.3 ha) independently in 1993, restored 9 private houses, and made and updated the shop curtains; "Noren". In the point of the observable items, the ground warehouse of structures with gable tile-roofing is visible and it is also in use. Moreover, a latticed window structure, a white wall, and a sea cucumber wall constitute the charm of new rows-of-houses. A stone pavement follows on the riverside at the site facing the Asahi River. There are the remains of an arrival-and-departure place of a flat boat and a brewery, etc. According to our investigation in 2002, the residents were satisfied with "It is easy to live quietly", "the beauty of a natural landscape", "harmony of rows-of-houses and a shop curtain", and "a historical atmosphere", but the recognition of "the creation of active rows-of-houses" was unexpectedly low. Therefore, cooperation between residents and informational sharing are much more required. Consequently, since both the visitors and the residents are satisfied very much with each facilities, such as the whole rows-of-houses, a samurai residence, a brewery, and a restaurant etc., town planning is well organized and attained the priority targets.
en-copyright=
kn-copyright=

en-aut-name=LuoYanjuan
en-aut-sei=Luo
en-aut-mei=Yanjuan
kn-aut-name=羅燕娟
kn-aut-sei=羅
kn-aut-mei=燕娟
aut-affil-num=1
ORCID=

en-aut-name=IchiminamiFumikazu
en-aut-sei=Ichiminami
en-aut-mei=Fumikazu
kn-aut-name=市南文一
kn-aut-sei=市南
kn-aut-mei=文一
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=江蘇大学

affil-num=2
en-affil=
kn-affil=岡山大学
en-keyword=Rows-of-houses Preservation
kn-keyword=Rows-of-houses Preservation
en-keyword=Katsuyama area
kn-keyword=Katsuyama area
en-keyword=Visitors
kn-keyword=Visitors
en-keyword=Residents
kn-keyword=Residents
END

start-ver=1.4
cd-journal=joma
no-vol=9
cd-vols=
no-issue=1
article-no=
start-page=99
end-page=110
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2004
dt-pub=20040227
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=DEM based Flood Extent Delineation in Dhaka City, Bangladesh
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Dhaka city, the capital of Bangladesh and home for more than 10 million people, has been affected by seasonal flooding almost in every year, however, the situation aggravates depending on rainfall and surrounding river waters. The aim of this paper is to delineate the flood extent in Dhaka city using digital elevation model (DEM), an integral part of geographic information system. Catastrophic floods of the 1988 and 1998 events are taken into consideration. Hydro-meteorological assessment of these events revealed that the 1988 flood was severe due to the lack of flood protection in the city together with transboundary flow of the major rivers while the 1998 flood was become deluge due to incessant monsoonal downpour along with early peaked of the river water levels. The 1998 event has done colossal damage in the city compare to the 1988 event. Flood extent estimation showed that DEM data is very precious to model inundation in the city, however, in order to be spatially explicit flood model, high resolution DEM is necessary. Finally, flood management issues are reviewed and found that combination of structural and nonstructural measures are necessary to help reducing flood induced losses and damage in the city.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=DewanA.M.
kn-aut-sei=Dewan
kn-aut-mei=A.M.
aut-affil-num=1
ORCID=

en-aut-name=NishigakiMakoto
en-aut-sei=Nishigaki
en-aut-mei=Makoto
kn-aut-name=西垣誠
kn-aut-sei=西垣
kn-aut-mei=誠
aut-affil-num=2
ORCID=

en-aut-name=KomatsuMitsuru
en-aut-sei=Komatsu
en-aut-mei=Mitsuru
kn-aut-name=小松満
kn-aut-sei=小松
kn-aut-mei=満
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=Dhaka City
kn-keyword=Dhaka City
en-keyword=Floods
kn-keyword=Floods
en-keyword=Digital Elevation Model
kn-keyword=Digital Elevation Model
en-keyword=1998 and 1988 Floods
kn-keyword=1998 and 1988 Floods
END

start-ver=1.4
cd-journal=joma
no-vol=9
cd-vols=
no-issue=1
article-no=
start-page=87
end-page=98
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2004
dt-pub=20040227
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Water Resources and Environmental Management in Ghana
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Three principal river basins are found in Ghana and the Volta River Basin is the major one, covering about three -quarters of Ghana. The basin is shared with Mali, Burkina Faso, Cote d'Ivoire, Togo and Benin. Water from the Volta River Basin is used for drinking water supply, generating hydro-electric power, irrigation, inland fisheries and lake transport. The sustainable management of the Volta River Basin is thus of great importance. Land use activities in the basin are thus closely monitored not only in Ghana, but also in the other riparian countries as well. This paper presents information and data on the water resources and environmental management of the Volta River Basin in Ghana.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=Kankam-YeboahKwabena
kn-aut-sei=Kankam-Yeboah
kn-aut-mei=Kwabena
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=Gyau-BoakyePhilip
kn-aut-sei=Gyau-Boakye
kn-aut-mei=Philip
aut-affil-num=2
ORCID=

en-aut-name=NishigakiMakoto
en-aut-sei=Nishigaki
en-aut-mei=Makoto
kn-aut-name=西垣誠
kn-aut-sei=西垣
kn-aut-mei=誠
aut-affil-num=3
ORCID=

en-aut-name=KomatsuMitsuru
en-aut-sei=Komatsu
en-aut-mei=Mitsuru
kn-aut-name=小松満
kn-aut-sei=小松
kn-aut-mei=満
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学
en-keyword=water resources
kn-keyword=water resources
en-keyword=environmental management
kn-keyword=environmental management
en-keyword=Volta River Basin
kn-keyword=Volta River Basin
en-keyword=Ghana
kn-keyword=Ghana
en-keyword=water utilization
kn-keyword=water utilization
END

start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=1
article-no=
start-page=71
end-page=76
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2007
dt-pub=20070315
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=The effect of aeration and water intake on the water quality in the Asahi River Dam reservoir
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The Asahi River Dam reservoir is one of the important fresh water resources in Okayama, Japan, and its eutrophication has been noted since the 1980s. Therefore, aeration has been applied to control the growth of phytoplankton. In this study, we discussed the effect of aeration and  water-intake depth on the water quality distribution in the reservoir, based on numerical simulation and observation. The principal conclusions were as follows:(1) The numerical simulation models applied here reproduced observations fairly well. (2) Water intake from the surfacce layer reduced the concentration of chlorophyll a in the surface layers. Water intake from the middle or bottom layer improved the deficit of dissolved oxygen in the bottom layers. (3) Aeration together with water intake from the middle or bottom layer improved the deficit of dissolved oxygen in the bottom layers.
en-copyright=
kn-copyright=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=ChenW.
kn-aut-sei=Chen
kn-aut-mei=W.
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=YoshidaR.
kn-aut-sei=Yoshida
kn-aut-mei=R.
aut-affil-num=2
ORCID=

en-aut-name=KawaraOsami
en-aut-sei=Kawara
en-aut-mei=Osami
kn-aut-name=河原長美
kn-aut-sei=河原
kn-aut-mei=長美
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=Nimi Branch Office of Okayama Prefecture

affil-num=3
en-affil=
kn-affil=岡山大学
en-keyword=the Asahi River Dam Reservoir
kn-keyword=the Asahi River Dam Reservoir
en-keyword=numerical simulation
kn-keyword=numerical simulation
en-keyword=eutrophication
kn-keyword=eutrophication
en-keyword=water intake depth
kn-keyword=water intake depth
en-keyword=dissolved oxygen
kn-keyword=dissolved oxygen
en-keyword=chlorophylla
kn-keyword=chlorophylla
END

start-ver=1.4
cd-journal=joma
no-vol=11
cd-vols=
no-issue=1
article-no=
start-page=51
end-page=55
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2006
dt-pub=20060315
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Laboratory Verification of a Proposed New Method to Determine the In-Situ Effective Porosity of Unsaturated Soil
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A laboratory validation of a proposed new method of determining the in-situ effective porosity of unsaturated soils was carried out on unsaturated river sand. The proposed method consists of boring a small diameter hole into the soil and inserting an Amplitude Domain Reflectometry (ADR) probe at the bottom part of the hole. Water is supplied into the hole till saturation and later de-saturated. The water content with time is determined from the ADR probe voltage potential readings. The effective porosity is determined from the difference between the saturated and de-saturated water contents. However, in the laboratory, the water is supplied through the top and bottom parts of the sample. From the experiments the obtained effective porosity ranged from 0.28 to 0.29 for wetting from the top with an average of 0.287 and 0.29 to 0.30 for wetting from the bottom with an average of 0.293. The determined effective porosity ranged from 71.7-73.3% of the real initial porosity of 0.40 of the river sand. The maximum attained degree of saturation during the experiment was 91%. The results indicated that the method will be suitable and useful in determining the effective porosity of medium grained unsaturated soils.
en-copyright=
kn-copyright=

en-aut-name=NishigakiMakoto
en-aut-sei=Nishigaki
en-aut-mei=Makoto
kn-aut-name=西垣誠
kn-aut-sei=西垣
kn-aut-mei=誠
aut-affil-num=1
ORCID=

en-aut-name=KomatsuMitsuru
en-aut-sei=Komatsu
en-aut-mei=Mitsuru
kn-aut-name=小松満
kn-aut-sei=小松
kn-aut-mei=満
aut-affil-num=2
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=AkudagoJohn Apambilla
kn-aut-sei=Akudago
kn-aut-mei=John Apambilla
aut-affil-num=3
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=ShinshiYoshihide
kn-aut-sei=Shinshi
kn-aut-mei=Yoshihide
aut-affil-num=4
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=KawakamiKenji
kn-aut-sei=Kawakami
kn-aut-mei=Kenji
aut-affil-num=5
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=KumamaruKoji
kn-aut-sei=Kumamaru
kn-aut-mei=Koji
aut-affil-num=6
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学

affil-num=3
en-affil=
kn-affil=岡山大学

affil-num=4
en-affil=
kn-affil=岡山大学

affil-num=5
en-affil=
kn-affil=岡山大学

affil-num=6
en-affil=
kn-affil=岡山大学
en-keyword=Underground dam
kn-keyword=Underground dam
en-keyword=Effective porosity
kn-keyword=Effective porosity
en-keyword=Storage capacity
kn-keyword=Storage capacity
en-keyword=Freshwater development
kn-keyword=Freshwater development
END

start-ver=1.4
cd-journal=joma
no-vol=4
cd-vols=
no-issue=1
article-no=
start-page=25
end-page=31
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1996
dt-pub=1996
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=メダカハネカクシの尾部分分泌物
kn-title=Pygidial Secretion of Stenus Rove Beetles (Coleoptera : Staphilinidae)
en-subtitle=
kn-subtitle=
en-abstract=ハネカクシ科の成虫は亜科や属によって特徴のある方法と特有の物質で防御分泌を行っている。メダカハネカクシ属の成虫は分泌器官を尾部に有し、エーテルに浸漬すると反転して肛門の両側に突出した。ホソフタホシメダカハネカクシをタバコ畑や野菜畑でスジクロメダカハネカクシ、コクロメダカハネカクシとトビイロメダカハネカクシを池、川やダムの水辺で採集した。採集虫はエーテルに約一分間浸漬して、分泌させた。分泌器官を観察し、分泌物と器官に残存している成分をガスクロマトグラフと質量分析計で調べた。ステナッシン、シネオール、イソピペリテノールと6-メチル-5ヘプテン-2-オンが同定できた。これらの構成成分が小動物や微生物に対して防御物質であり、水に落下した時の水表面の滑走に役だっていると考えられた。
kn-abstract=Rove beetles have a pair of pygidial excretory organs, each group secretes characteristic substances in a peculiar manner. The genus Stenus has a pair of pygidial organs, eversible by immersion in diethyl-ether at both sides of the anus. S. anthoracinus, S. melanarius vercecundus and S. rufescens were collected at ponds and river shores, and S. alienus was collected at tobacco and vegetable fields. Excretory substances were secreted in the diethylether, and identified by gas chromatography and mass spectrometry. Stenusin [N-Ethyl-3-(2-methylbutyl) piperidine], 1,8-cineole, isopiperitenol and 6-Me-5-hepten-2-one were identified. These may probably act as defensive substances against small attacking animals and microorganisms, and act as water suface moving active agents.
en-copyright=
kn-copyright=

en-aut-name=KanehisaKatsuo
en-aut-sei=Kanehisa
en-aut-mei=Katsuo
kn-aut-name=兼久勝夫
kn-aut-sei=兼久
kn-aut-mei=勝夫
aut-affil-num=1
ORCID=

en-aut-name=TsumukiHisaaki
en-aut-sei=Tsumuki
en-aut-mei=Hisaaki
kn-aut-name=積木久明
kn-aut-sei=積木
kn-aut-mei=久明
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学
en-keyword=Rove beetles
kn-keyword=Rove beetles
en-keyword=Stenus
kn-keyword=Stenus
en-keyword=Excretory secretion
kn-keyword=Excretory secretion
en-keyword=Pygidial organ
kn-keyword=Pygidial organ
en-keyword=Defensive secretion
kn-keyword=Defensive secretion
END

start-ver=1.4
cd-journal=joma
no-vol=39
cd-vols=
no-issue=1
article-no=
start-page=79
end-page=91
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1972
dt-pub=1972
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Studies on the Discharge at Water-intake Structure
kn-title=取水施設の流入量に関する研究
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=This head work is the water-intake structure, by which irrigation water has been carried to the reservoir constructed in the other catchment basion. We always have intaken water from the river by this head work, even at the time of flood.  To design such structure, we have to know the rerationship between the gate opening and the discharge of water or the discharge coefficient which varies widely according to the river water level. That orifice formula could be used in calculation to obtain the amount of discharged water from the gate has experimentally been confirmed by Toch, Honma and others.  The discharge coefficient of the intake gate Cq is shown in its relationship to parameters expressing the gate geometry. Any agreement between actual gate discharge and Toch's experimental results could never be found when the gate geometry is different. Therefore, we can only obtain Cq value through a specific model study for a particular project. Specially in this intake mention should be made here to the fact that the loss of head Ф in the uniform flow sections upstreams and downstreams from the gate is ignored, and the value of Ф related to the Cq value.  Relation between Cq and Ф can be obtained by the following equation using the Bernoulli's energay theorem, in which ψ. Ф are head loss parameters,  Cq H1･H2 /√H12 (1+ψ) + H32 (Ф-l)  and Cq value can be obtained by calculating head loss. On the other hand, if the systematic graphical representation of the relationship between the value q and the elements is obtained by the experimental measurements of hydraulic model tests, q-H1/h〜H3/h, in which H1,H3 are the depths of flow in the upstream and downstream from the gates, should be considered applicable to the practical work and useful in checking up the experimental values with theoretical solution.
en-copyright=
kn-copyright=

en-aut-name=WatanabeTadashi
en-aut-sei=Watanabe
en-aut-mei=Tadashi
kn-aut-name=渡辺忠
kn-aut-sei=渡辺
kn-aut-mei=忠
aut-affil-num=1
ORCID=

en-aut-name=OkadaJunji
en-aut-sei=Okada
en-aut-mei=Junji
kn-aut-name=岡田純治
kn-aut-sei=岡田
kn-aut-mei=純治
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=岡山大学

affil-num=2
en-affil=
kn-affil=岡山大学
END