| JaLCDOI | 10.18926/15448 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_28_2_1.pdf |
| 著者 | 竹元 嘉利| 榊原 精| 飛田 守孝| |
| 抄録 | Fine particles of Ti-Mo alloy have been prepared by means of arc method, and investigated on internal structure and phase transformation using HR-TEM and EDS. Martensite phase was observed in a particle containing comparatively low concentration of Mo, and ω phase was also found to exist in a nearly 14 % M0 particle. The structure of the ω phase in the fine particle is expanded and remarkably unstable in comparison with the bulk sample, so that it has disappeared in a few seconds during TEM observation. Moreover, the β structure of Ti-Mo particles has changed to the unusual fcc phase with irradiation of a strong electron beam. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-03-15 |
| 巻 | 28巻 |
| 号 | 2号 |
| 開始ページ | 1 |
| 終了ページ | 7 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307644 |
| JaLCDOI | 10.18926/15461 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_28_2_53.pdf |
| 著者 | 東辻 千枝子| Matsubara Takeo| Miyata Satoru| |
| 抄録 | One of the best known solid solution of perovskites is the PbTiO(3)-PbZrO(3) system which is usually abbreviated as PZT. In the phase diagram of this system, there is a drastic phase change from tetragonal to rhombohedral at the molar ratio around 50:50. The PZT crystals are widely used as a practical piezoelectric material because of its very strong piezoelectric effect near this morphotropic phase boundary. We try to explain this anomaly in piezoelectric constant by a phenomenological theory. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-03-15 |
| 巻 | 28巻 |
| 号 | 2号 |
| 開始ページ | 53 |
| 終了ページ | 58 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307223 |
| JaLCDOI | 10.18926/15460 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_28_2_45.pdf |
| 著者 | 東辻 浩夫| 橋本 成仁| 奈良 重俊| |
| 抄録 | Difficulties in simulating systems composed of classical and quantum particles lie in the treatment of the many-body interactions between quantum particles and the geometrical variety of configurations of classical particles. In order to overcome these difficulties, we have developed some numerical methods and applied them to simple cases. As for stationary states, the finite element method provides us with sufficient geometrical freedom. Combined with the Kohn-Sham equation based on the density functional theory, this method virtually satisfies our requirement. In order to investigate time-dependent phenomena, we apply the time-dependent Kohn-Sham equation. Adopting the finite difference method, we are able to follow the development of quantum many-body system. As an example, we estimate the effects of the potential height, the electric field, and many-body interactions in some transition processes in quantum wells coupled by a tunneling barrier. This example is important in itself in relation to semiconductor superlattices and also serves as a benchmark for quantum simulations, variety of geometry corresponding to that of classical particles. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-03-15 |
| 巻 | 28巻 |
| 号 | 2号 |
| 開始ページ | 45 |
| 終了ページ | 52 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307158 |
| JaLCDOI | 10.18926/15463 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_28_2_59.pdf |
| 著者 | 西垣 誠| Sun Yao| 河野 伊一郎| |
| 抄録 | In this paper, first, an elasto-plastic consitituve equation for unsaturated soil was developed by considering of the basically behavior of unsaturated soil. Second, the results of a number of triaxial test and a set of rigid foundation model tests were simulated by using this constitutive equation, the agreement between observed and computed results was satisfactory and confirms the possibilities of this constitutive equation. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-03-15 |
| 巻 | 28巻 |
| 号 | 2号 |
| 開始ページ | 59 |
| 終了ページ | 75 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307850 |
| JaLCDOI | 10.18926/15453 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_28_2_13.pdf |
| 著者 | Kusumoto, Hisao| 飛田 守孝| 榊原 精| Nishida, Norihide| 竹元 嘉利| 山田 益男| |
| 抄録 | The strain in Si substrate induced by locally ion-plated thin film of TiN was observed by X-ray topograph (Lang technique). Circular TiN film was deposited on one side of the Si surface. In all topographs the highest blackness attributed to kinematical diffraction effect occurred at the film edge. Rosette pattern with four-lobes was observed around the film. Blackness as a whole increased with the film thickness. Strain was observed in the depth direction of substrate by limited projection method. When the slit width was narrowed, the kinematical images disappeared, and white images appeared at the film edge. All the contrast disappeared when the TiN film was completely removed in boiling HNO(3). The strain induced by the film deposition was proved to be elastic. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-03-15 |
| 巻 | 28巻 |
| 号 | 2号 |
| 開始ページ | 13 |
| 終了ページ | 20 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307150 |
| JaLCDOI | 10.18926/15456 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_28_2_21.pdf |
| 著者 | 山本 恭二| Jiao Xuezhen| |
| 抄録 | An experimental investigation has been made of the cyclone dust collector with a perforated internal rotating cylinder. The size of the rotating cylinder is of 0.5D, where D is the diameter of the cyclone body, and is the same size as the outlet tube. The dust collection efficiency as well as the pressure loss has been measured when the inlet flow speed is 9 ~ 21 m/s and the rotating speed of the cylinder is 37 ~ 63 m/s. The velocity and pressure distributions were also measured. It is found that the collection efficiency decreases and the pressure loss increases as the rotating speed increases. It is also shown that both the inward radial velocity and the upward vertical velocity become large as the rotating cylinder increases its speed. As a whole, the rotation of the internal cylinder makes worse performance of the cyclone dust collector. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-03-15 |
| 巻 | 28巻 |
| 号 | 2号 |
| 開始ページ | 21 |
| 終了ページ | 31 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307575 |
| JaLCDOI | 10.18926/15458 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_28_2_33.pdf |
| 著者 | Wang, Ming| Ahmed, Anis| 和田 修己| 古賀 隆治| |
| 抄録 | Proposed here is a convenient optical system to collimate the crescent shaped blue laser beam radiated from a Cerenkov SHG in channel waveguide configuration. This collimation system is consisted of a parabolic mirror and has a very large tolerance to the mirror displacement. The anisotropy of the nonlinear crystal on which the waveguide is fabricated has been taken into account. The optimum mirror location is given to obtain a collimated blue laser beam with an aberration less than 0.07λ. By using an objective lens, the collimated beam can be focused down to a thin beam with the spot size less than 1μm. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-03-15 |
| 巻 | 28巻 |
| 号 | 2号 |
| 開始ページ | 33 |
| 終了ページ | 44 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307149 |
| JaLCDOI | 10.18926/15452 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_28_2_9.pdf |
| 著者 | 榊原 精| Kanadani, Teruto| Nakagawa, K.| Yokota, Y.| |
| 抄録 | The state above the solubility temperature of GP zones of Al-3mass % Mg alloy, which has a tendency for precipitation and preprecipitation at low temperature, was studied by resistivity measurement. Homogenization treatment at high temperature reduced Mg atoms in the surface layer. After quenching from 623K, the specimen was annealed sequentially at various temperatures above the GP zone solvus. The stationary resistivity obtained in annealing at a temperature was the same irrespective of the starting state and increased with decreasing annealing temperature. No precipitation was observed in the annealing. The results are not in favor of the segregation of Mg atoms to the dislocation loops but of the short range clustering. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-03-15 |
| 巻 | 28巻 |
| 号 | 2号 |
| 開始ページ | 9 |
| 終了ページ | 12 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307581 |
| JaLCDOI | 10.18926/20012 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_1_15.pdf |
| 著者 | 東辻 千枝子| Matsubara, Takeo| Obuchi, Masumi| |
| 抄録 | A molecular orbital approach to the electronic structure of C(60) molecule is formulated on the basis of optimized bond orbital model and the stability of the truncated icosahedron structure is examined. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-11-30 |
| 巻 | 29巻 |
| 号 | 1号 |
| 開始ページ | 15 |
| 終了ページ | 22 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002310919 |
| JaLCDOI | 10.18926/20011 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_1_7.pdf |
| 著者 | Hiroyuki Tachibana| 東辻 浩夫| 奈良 重俊| 東辻 千枝子| |
| 抄録 | Effects of interface fluctuations on the electronic states in semiconductor quantum dots are analyzed on the basis of numerical solutions for ground state wave functions and energy eigenvalues. It is shown that the effective volume of confinement becomes smaller than the real volume of quantum dots due to fluctuation. This effect comes from the fact that the wave functions with larger characteristic wavelength are not able to deform themselves following the fluctuation of interfaces exactly. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-11-30 |
| 巻 | 29巻 |
| 号 | 1号 |
| 開始ページ | 7 |
| 終了ページ | 14 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002310741 |
| JaLCDOI | 10.18926/19584 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_1_1.pdf |
| 著者 | Uno, Yoshiyuki| Kubota, Shin-ichiro| Yokomizo, Seiichi| Ogata, Kojiro| Tada, Nobuhiko| |
| 抄録 | Scribing of copper coated alumina ceramic board with Q-switched YAG laser used for the maskless direct patterning of circuit board is experimentally investigated, which leads to efficient production of trial circuit board. Better dividing of alumina circuit board 655μm in thickness can be attained by the scribing of about 100μm depth. Higher repetition frequency of laser irradiation leads to smaller notch angle and lower breaking load. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-11-30 |
| 巻 | 29巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 6 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002309083 |
| JaLCDOI | 10.18926/19585 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_1_23.pdf |
| 著者 | Kawara, Osami| Fukumoto Kohji| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1994-11-30 |
| 巻 | 29巻 |
| 号 | 1号 |
| 開始ページ | 23 |
| 終了ページ | 34 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002309068 |
| JaLCDOI | 10.18926/15428 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_2_83.pdf |
| 著者 | 都留 寛治| Nishiyama Chikako| 大槻 主税| 尾坂 明義| |
| 抄録 | One of the CaO,SiO(2)-based bioactive glasses(5OCaO･ 5OSiO (2) in mol%) were soaked for various periods in a simulated body fluid(SBF) with or without containing alcohols such as methanol, ethanol, and 1-propanol. Effect of the alcohols was investigated on the apatite formation on the glass surface with thin-film X-ray diffraction, FT-IR reflection spectroscopy and scanning electron microscopy. Under the presence of alcohols up to 0.1mol/l in the SBF an apatite layer was formed on the glass, while it consisted of crystallites similar in morphology but larger in size than that found for the SBF without the alcohols. It was concluded that the alcohols little influenced the the apatite forming ability of the CaO,SiO(2)-based glasses. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1995-03-27 |
| 巻 | 29巻 |
| 号 | 2号 |
| 開始ページ | 83 |
| 終了ページ | 88 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307301 |
| JaLCDOI | 10.18926/15430 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_2_89.pdf |
| 著者 | Sekoguchi, Kenji| Miyazaki, Shigeji| |
| 抄録 | The present paper deals with a new perfomance measure, the actual mean flow time, defined as a mean of the elapsed time of each job counted from the start time on a schedule to the corresponding due date. For the one machine backward scheduling model with a common due date and independent setup times, LPT schedule is shown as the optimal solution for the proposed measure. An optimal algorithm is presented for the case with dependent setup times on the basis of the algorithm by Arcelus and Chandra for a n / 1 / F forward scheduling problem. The proposed algorithm is coded in C-language and a computational experience is reported through a 16-bit computer. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1995-03-27 |
| 巻 | 29巻 |
| 号 | 2号 |
| 開始ページ | 89 |
| 終了ページ | 94 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307729 |
| JaLCDOI | 10.18926/15408 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_2_1.pdf |
| 著者 | 榊原 精| Nakagawa, Keiyu| Kanadani, Teruto| |
| 抄録 | Effect of addition of a small amount of copper to Al- 12mass % Zn binary alloy on the process of low temperature aging is studied by hardness test and transmission electron microscopy. Age hardening rate after quenching from various temperatures is slowed down by addition of 0.5mass % copper to the binary alloy. The hardness obtained after long aging, however, is increased a little by the addition of copper. The extent of soft surface layer formed by aging in the copper-added alloy is nearly equal to that obtained in the binary alloy. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1995-03-27 |
| 巻 | 29巻 |
| 号 | 2号 |
| 開始ページ | 1 |
| 終了ページ | 4 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307763 |
| JaLCDOI | 10.18926/15415 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_2_29.pdf |
| 著者 | 岡 久雄| 福田 敬| |
| 抄録 | In the stiffness evaluation from the skin surface, the body structure under the skin, like a bone and muscle, influences on the measurement results. The authors developed the measurement system of biomechanical impedance with applying a vibration of acoustic frequency onto the body surface. We measured the viscoelasticity of the silicone-gel model, which involves metal blocks, from the gel surface by using this system. The internal structure of model is estimated from the relation between the viscoelasticity and the distance from the gel surface to the internal block. Applying this method, the shape of ribs of the right chest are estimated. The shapes and viscoelasticity of silicone-gel tumor model, which has two different tumors, are also estimated. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1995-03-27 |
| 巻 | 29巻 |
| 号 | 2号 |
| 開始ページ | 29 |
| 終了ページ | 37 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307199 |
| JaLCDOI | 10.18926/15413 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_2_23.pdf |
| 著者 | 梶原 康博| 大崎 紘一| Dong Rui| |
| 抄録 | A method for reducing the variety of parts is proposed. The variety of parts in a product and the variety of parts among products are evaluated in consideration of some factors that influence the production cost. Rules are formulated for selecting parts which should be eliminated or whose designs should be changed to reduce these varieties. An expert system is developed based on this method for reducing the variety of parts. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1995-03-27 |
| 巻 | 29巻 |
| 号 | 2号 |
| 開始ページ | 23 |
| 終了ページ | 27 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307257 |
| JaLCDOI | 10.18926/15417 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_2_39.pdf |
| 著者 | 岡 久雄| 坂本 俊哉| Irie Takashi| |
| 抄録 | The body structures under the skin surface, such as bones and tendon, have an influence on the stiffness evaluation observed from the surface. In this case, the observed stiffness should be called an apparent stiffness. To obtain the biomechanical properties of skin itself, the influence of body structure should be removed. This study deals with the correction method of apparent viscoelasticity which calculated from apparent biomechanical impedance. This method is applied to the measured result of the forearm and the right chest to confirm its effectiveness. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1995-03-27 |
| 巻 | 29巻 |
| 号 | 2号 |
| 開始ページ | 39 |
| 終了ページ | 47 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307527 |
| JaLCDOI | 10.18926/15426 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_2_77.pdf |
| 著者 | 都留 寛治| Nishiyama Chikako| 大槻 主税| 尾坂 明義| |
| 抄録 | Poly(methyl methacrylate) substrates were immersed in suspensions containing bioactive 50CaO･50SiO(2) (mol%) glass particles (45 μm in diameter) and a 6:4 (volume fraction) mixture of ethanol and THF, and an ultrasonic energy was applied to the system. A layer of glass particles was implanted and covered more than 50% of the substrate surface. Thin film X-ray diffraction patterns and FT-IR reflection spectra indicated deposition of apatite on the glass-implanted substrates after they were soaked for 12 h in a simulated body fluid similar in apatite-deposition ability to the human blood plasma. Flake-like apatite crystallites formed on the substrate soaked in SBF for 3 days. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1995-03-27 |
| 巻 | 29巻 |
| 号 | 2号 |
| 開始ページ | 77 |
| 終了ページ | 81 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307332 |
| JaLCDOI | 10.18926/15411 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_29_2_13.pdf |
| 著者 | Dwianto Gatot| 大崎 紘一| 梶原 康博| |
| 抄録 | We propose a method to design the supplying method of parts to an assembly line. Three types of supplying model (Serial, Parallel, and Mixed) are proposed based on the relation between the area of part and that of the transportation equipment. The part is supplied by the pallet on which the all parts of one product are arranged or by the lot of one part. AGV or conveyor are used to transport the pallet. The supplying model is evaluated from the total transportation cost calculated from the price of the transportation equipment and of land. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1995-03-27 |
| 巻 | 29巻 |
| 号 | 2号 |
| 開始ページ | 13 |
| 終了ページ | 21 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307903 |