result 29031 件
| JaLCDOI | 10.18926/15563 |
|---|---|
| Title Alternative | DIRECT COLORIMETRIC AND DIRECT TITRIMETRIC DETERMINATION OF CALCIUM WITH NEW REAGENT (SUPPLEMENTARY REPORT) |
| FullText URL | 006_015_019.pdf |
| Author | Ashizawa, Takashi| |
| 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. |
| Publication Title | 岡山大学温泉研究所報告 |
| Published Date | 1952-03 |
| Volume | volume6 |
| Start Page | 15 |
| End Page | 19 |
| ISSN | 0369-7142 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002307466 |
| JaLCDOI | 10.18926/15562 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_2_1.pdf |
| Author | Hirose Koji| Fujita Shiro| |
| Abstract | The friction coefficient for unsteady flow of fluids in pipes has not been studied so well. Usually the friction coefficient for steady flow has been used in place of one for unsteady flow. For a checkup of shis institution, in this paper, the pedulation of water column in an open vertical U-tabe is studied analytically and experimentally. The results of the numerical calculations coincide with the experimental results fairly well. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1967-04-01 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 4 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307938 |
| JaLCDOI | 10.18926/15561 |
|---|---|
| Title Alternative | CHEMICAL STUDIES ON MISASA HOT SPRING (17) RADIUM B CONTENT AND ITS MEASURING METHOD. |
| FullText URL | 006_012_014.pdf |
| Author | Ashizawa, Takashi| |
| Abstract | With a newly devised method of Ra. B determination using Dithizone extraction the author measured the Ra. B contents of Misasa and Sekigane Hot Springs. This method is applicable to the weakly radioactive waters. Radium B content of Misasa Hot Spring rangeS from 3.0 to 7.2×10(-9) Curie units per liter and the distance of its radon soure from the issuing point was estimated to be 3-25土5 minutes. |
| Publication Title | 岡山大学温泉研究所報告 |
| Published Date | 1952-03 |
| Volume | volume6 |
| Start Page | 12 |
| End Page | 14 |
| ISSN | 0369-7142 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002307330 |
| JaLCDOI | 10.18926/15560 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_138.pdf |
| Author | Ohta Mutsuo| Hashimoto Fumio| Tanimoto Tadashi| |
| Abstract | The changes of electrical resistivity of several alloys, that is, Al-10wt % Zn, Al-10wt % Zn-0.01wt % Cd, Al-10wt % Zn-0.01wt % In, Al-10wt % Zn-0.01wt % Sn, Al-3.0wt % Ag, Al-3.0wt % Ag-0.01wt % Cd, Al-3.0wt % Ag-0.01wt % In, Al3.0wt % Ag-0.0lwt % Sn, Al-3.0wt % Cu, Al-3.0wt % Cu-0.0lwt % Cd and Al-3.0wt % Cu-0.01wt % In, during isothermal aging after quenching were measured. The interactions between a vacancy and a cadmium, indium or tin atom in Al-10wt % Zn, Al-3.0wt % Ag and Al-3.0wt % Cu alloys were estimated. Binding energies obtained for Al-Zn, Al-Ag and Al-Cu base ternary alloys agree within experimental accuracy with each other. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 138 |
| End Page | 147 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307592 |
| JaLCDOI | 10.18926/15559 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_134.pdf |
| Author | Ohta Mutsuo| |
| Abstract | Polycrystalline specimens of Al-30wt % Ag and Al-30wt % Zn alloys, which were quenched into water from the temperature of solution heat treatment, were annealed at L.T. aging temperatures or reversion temperatures so as to make them contain zones of nearly equal radii for each alloy and various concentrations of solute element in zones. These specimens were cold rolled exactly to 50%, and then annealed at L. T. aging temperatures for varying time. The state of zones and precipitates were investigated by X-ray small-angle scattering photographs. The results obtained were as follows: (1) The precipitation ofγ'-phase began earlier in the specimens of Al-Ag alloy annealed at L. T. aging temperature before cold rolling than in those specimens annealed at reversion temperatures before cold rolling when annealed at L. T. aging temperatures after cold rolling. (2) The rate of precipitation of Zn solid solution in Al-Zn alloy did not depend upon the annealing temperature before cold rolling when cold rolled specimens were annealed at L. T. aging temperature. (3) In Al-Ag alloy, the rate of disappearance of G. P. zones at L. T. aging temperature depends mainly upon the annealing temperature before cold rolling. On the other hand, in Al-Zn alloy, the rate of disappearance of G. P. zones at L. T. aging temperature does not depened upon the annealing temperature before cold rolling. (4) These results may be explained without contradiction considering the relation of structures between matrix and precipitates and the deformation stacking faults. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 134 |
| End Page | 137 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307180 |
| JaLCDOI | 10.18926/15558 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_130.pdf |
| Author | Wada Tsutomu| Ohgishi Shinji| |
| Abstract | The method of the harmonic analysis of the human operator's characteristics by means of an analog computer is described. The human operator's characteristics in the closed loop system are described by vector locus. The human operator controls in response to the sine wave input so as to make constant the gain in the closed loop system. In accordance with the change of the input frequency, the operator changes his control action. Consequently the transfer function of the human operator's characteristics is too complex and difficult to be described by a linear element. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 130 |
| End Page | 133 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307865 |
| JaLCDOI | 10.18926/15557 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_120.pdf |
| Author | Wada Tsutomu| Sawaragi Yosikazu| Yonezawa Yoo| |
| Abstract | We attempt to apply the feedback compensation technics of on-off controller to the pneumatic systems. In this paper, we describe the structure and the action of a new developed pneumatic on-off controller with feedback compensation, and the principle of the special pilot valve which is used in the controller as the on-off element. Next, it is shown analytically and experimentally that the dynamic characteristics of the controller are nearly equal to those of the continuous one which has an infinite proportional gain instead of the on-off element, if the time average of its discontinuous output is treated as the output of the controller. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 120 |
| End Page | 129 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307543 |
| JaLCDOI | 10.18926/15555 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_110.pdf |
| Author | Takamatsu Takeiciro| Sayama Hayatoshi| Tonoike Takao| |
| Abstract | The batch chemical reaction is chosen as the process model to be optimized and the rate constants are functions of pressure only, as the reactions are assumed to occur isothermally. The time optimal control problem considered here means to determine the minimum time path from the given initial compositions to desired final compositions by manipulating the process pressure. A gradient method or a steepest-ascent method is applied to determine the control variable program by using the high speed digital computer. Numerical solutions are presented for the following three cases: (1) no constraint on the operating pressure ...... open and matched terminal constraint. (2) constraint on the operating pressure ...... open terminal constraint. (3) constant operating pressure ...... open terminal constraint. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 110 |
| End Page | 115 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307978 |
| JaLCDOI | 10.18926/15554 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_106.pdf |
| Author | Kikuchi Susumu| Harano Hiromi| Miyazaki Yoshiyuki| |
| Abstract | In this experiment the comparison was studied between the muscular and the nervous fatigue and the flicker phenomenal value of the optic nerve. In order to measure the physical fatigue, various methods have been reported by many authers. In this experiment, a quantification of the fatigue was tried though the relation between the amount of mental activity and the FF (flicker frequency), which is useful in physical fatigue measurement with the change in respiration and pulse. In measuring the FF, respiration and pulse caused by physical work, it shows that the these three measured values are somewhat exponential, which might be called the exponential accumlation of fatigue. In mental activity slight relation was also found between fatigue and learning. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 106 |
| End Page | 109 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307356 |
| JaLCDOI | 10.18926/15553 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_98.pdf |
| Author | Kikuchi Susumu| Tomiya Nobuaki| |
| Abstract | Demand and supply of service are complicatedly related with the balance between fixed capital and circulating capital, movement to the left or right side from a break-even point, and other factors. If there is the disproportion between demand and supply of service, the waiting line to take a service will vary, and in some cases, fixed equipment will not be employed effectively. This report presents trial manufacture of the experimental equipment for waiting line problems. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 98 |
| End Page | 105 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307672 |
| JaLCDOI | 10.18926/15552 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_91.pdf |
| Author | Kikuchi Susumu| Matuda Motoi| |
| Abstract | As has been told, industry is roughly composed of three elements: man, money and machine. Along with a macroscopically slow development in social democracy on each microscopically quantum stage, management and administration in almost enterprise they have been exceptionally concerned with one after another. From machine to man, from man to money and then from money to machine, cyclically the tentative subject has been transfered as though we are nondescending the spiral stair with ever divergent radii. (Fig.1) |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 91 |
| End Page | 97 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307525 |
| JaLCDOI | 10.18926/15551 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_84.pdf |
| Author | Misaki Takayoshi| Kato Osamu| |
| Abstract | Described in this paper are the design considerations of the simple element of the two-dimensional RC distributed constant circuit and its applications for the analysis of the transient heat conduction problems in engineering work. This element is formed by coating with the resistive film the upper surface of the high permittivity ceramics plate whose back side to be silvered. In addition to a resistivity of every elementary area within the resistive film, there exists capacitive coupling between the area and ground. This element can be regarded as a typical two-dimensional RC distributed system and utilized as a simulator for the same dimensional heat conduction system. It has a convenience and high accuracy for the analysis of the transient heat conduction problems in engineering work. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 84 |
| End Page | 90 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307680 |
| JaLCDOI | 10.18926/15550 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_78.pdf |
| Author | Himei Toyoji| Inoue Jyunichi| Fukumori Kooichi| |
| Abstract | The operation, mainly in a steady state, of a half controlled single-phase bridge circuit with a finite inductive load, has been treated analytically. Some operation features of particular bridge circuits are discussed. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 78 |
| End Page | 83 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307828 |
| JaLCDOI | 10.18926/15549 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_70.pdf |
| Author | Nakata Takayoshi| Ishihara Yoshiyuki| Moriyasu Tadataka| |
| Abstract | In this paper, we describe the way to compute circuit constants of the impulse voltage generator by means of the digital computer, when an impulse voltage waveform is given. The definition of waveform is to be revised, and this definition is adopted to our computation. From the results, we can see the influence of revising definition upon circuit constants. We also devised graphs, from which we can easily determine the L-C-R circuit constants. (see Fig.2(a)) |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 70 |
| End Page | 77 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307723 |
| JaLCDOI | 10.18926/15548 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_63.pdf |
| Author | Mine Tadao| Yamamoto Tatuma| Baba Yukinobu| |
| Abstract | The well-known steady state solution of nonlinear oscillatory circuits based on the use of Fourier series, the so-called harmonic balance, is a powerful method because of its wide applicability. Yet, this method has not only difficulties to solve transcendental equations or algebraic equations of higher orders, but gives no transient state solution. The harmonic approximation and the extended harmonic approximation defined in this report are linearization methods which give approximations of steady state and transient state simultaneously. Furthermore the method enables an unification and extension of miscellaneous linearization methods. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 63 |
| End Page | 69 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307143 |
| JaLCDOI | 10.18926/15547 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_59.pdf |
| Author | Yamashista Yuhiko| Yokoyama Fumiyoshi| Monobe Kazuo| |
| Abstract | Fujiwara's oriented crystallization method was applied to poly (ethylene oxide) to obtain a uniform texture composed of parallel fibrils which correspond to the structure of a radial direction of spherulites. Two different x-ray diffraction patterns in crystallite orientation of the spherulite radius were obtained. From these patterns and crystallization conditions it could be determined that the spherulite radius has a [401] rotation axis below about 50℃ and two [421] and [421]rotation axes above about 50℃. A reasonable interpretation was given for these two ways of spherulitic crystallization, based on the growth features of lamellar crystals of poly (ethylene oxide). That is, it is concluded that a second order transition in poly (ethylene oxide) lamellar crystals near the temperature of 50℃ is responsible for the change of the rotation axis in spherulite radius. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 59 |
| End Page | 62 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307666 |
| JaLCDOI | 10.18926/15546 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_54.pdf |
| Author | Moriwake Tosio| |
| Abstract | Condensation of 6-methoxy- and 6-methylthio-2-propionaphthone with t-butyl α-bromoisobutyrate gave the corresponding t-butyl β-hydroxy esters in yields of 80 and 84% respectively. The treatment of the β-hydroxy esters with iodine in the presence of red phosphorus in boiling acetic acid effected reductive cleavage to produce 6-hydroxy- and 6-methylthio-α, α-dimethyl-β-ethyl-2 naphthalenepropionic acid in yields of 33 and 34% respectively. Reduction of the former ester in the presence of palladium-charcoal in acetic acid gave α, α-dimethyl-β-ethyl-6-methoxy-2-naphthalenepropionic acid in a 49% yield. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 54 |
| End Page | 58 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307698 |
| JaLCDOI | 10.18926/15545 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_51.pdf |
| Author | Moriwake Tosio| |
| Abstract | Condensation of σt -butyl chloroacetate and ketones by means of magnesium in ether or benzene alone was carried out but the excellent yields of P-hydroxy ester could not be obtained, and the results of the condensation of t -butyl bromoacetate and ketones by means of magnesium and mercuric chloride in benzene were also disappointing. When a mixture of benzene and ether was used as solvent in the condensation of t-butyl chloroacetate and ketone in the presence of magnesium and mercuric chloride, the yields of p-hydroxy esters from cyclohexanone and methyl isobutyl ketone were 62 and 71 % respectively, and were comparable with those of other condensing methods. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 51 |
| End Page | 53 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307140 |
| JaLCDOI | 10.18926/15544 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_47.pdf |
| Author | Takeda Akira| Wada Satosi| Ohmura Yutaka| |
| Abstract | a-Chloro-N-arylisobutyrimidyl chloride (I) reacted with ethyl sodiomalonate to afford N-aryl-2,2-dimethyl-3 carbethoxysuccinimide. This reaction seems to proceed in a different mechanism from that of the synthesis of tetronic acids(2) and is supposed to involve a primary attack of the carbanion at the a-carbon atom of the chloride followed by the cyclization. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 47 |
| End Page | 50 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307888 |
| JaLCDOI | 10.18926/15543 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_44.pdf |
| Author | Takeda Akira| Torii Sigeru| |
| Abstract | Acetylation of γ,γ-dimethyl-α,β-dicarbethoxybutyrolactone in benzene in the presence of sodium hydride was attempted. The structure of the condensation product was assigned to O-acetyl derivative, which was converted into γ,γ-dimethyl-β-carbethoxy-α-carboxybutyrolactone whose structure is also discussed by IR spectrum. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 44 |
| End Page | 46 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307861 |
