result 621 件
| JaLCDOI | 10.18926/15619 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_127.pdf |
| Author | Nakata Takayoshi| Ishihara Yoshiyuki| |
| Abstract | In order to measure the iron loss of the silicon steel plates, we produced a vectormeter using a thyristor and a gate turn off thyristor by way of experiment. This equipment is very useful, because the frequency range is improved very much in comparison with the vectormeter which is composed of the mechanical rectifying system using a synchronous motor, namely, is enlarged from 60Hz to 1kHz, |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 127 |
| End Page | 130 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307274 |
| JaLCDOI | 10.18926/15618 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_123.pdf |
| Author | Moriwake Tosio| Honjo Yozo| |
| Abstract | Condensation of chroman-4-one with ethyl formate in the presence of sodium methoxide gave 3-hydroxymethylenechroman-4-one (II). Reaction of II with hydroxylamine hydrochloride, followed isomerization by potassium t-butoxide gave IV. 3-Cyano-3-methylchroman-4-one was obtained by methylation of IV or treatment of III with potassium t-butoxide and methyl iodide. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 123 |
| End Page | 126 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307167 |
| JaLCDOI | 10.18926/15617 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_119.pdf |
| Author | Takeda Akira| Wada Satosi| Uno Takaaki| Masuike Taketosi| Torii Sigeru| |
| Abstract | The preparation of the title compounds as a new type of stable S-ylides has been described. The reaction of 1-dimethylsulfuranylidene-1-phenylsulfonyl-2-propanone (IIb) with lithium aluminium hydride was found to result in the formation of trans-phenylpropenylsulfone (IV), phenylsulfonyl-2-propanone (Ib), and an unidentified paraffin as major products. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 119 |
| End Page | 122 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307991 |
| JaLCDOI | 10.18926/15616 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_113.pdf |
| Author | Takeda Akira| Wada Satosi| |
| Abstract | A series of α-monoalkylamino-α-arylacetamides and α-dialkylamino-α-arylacetamides have teen synthesized via the corresponding nitriles. Some of these compounds have been found to exhibit moderate activity as herbicides. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 113 |
| End Page | 117 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307743 |
| JaLCDOI | 10.18926/15615 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_107.pdf |
| Author | Takeda Akira| Torii Sigeru| Oka Hirotosi| |
| Abstract | The electrochemical oxidation of trans-cinnamic acid in a mixed aqueous solution of acetic acid and methanol containing potassium hydroxide was studied. The separation of ketones and aldehydes from the neutral materials using Girard reagent P gave benzaldehyde, tolualdehydes, acetophenone, methylacetophenones, propiophenone, phenacyl acetate, and phenacyl alcohol. The mechanism of the anodic reaction of trans-cinnamic acid has been discussed. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 107 |
| End Page | 112 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307863 |
| JaLCDOI | 10.18926/15614 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_101.pdf |
| Author | Hirai Taketsugu| Takahashi Katsuaki| |
| Abstract | Potential sweep voltammetries of Na(2)O·SiO(2) and Na(2)O·2SiO(2) at 730-1200°C were performed with the stationary platinum wire electrode and with the sweep rates of 40 and 120mV/sec. Although current-potential relation of Na(2)O . SiO(2) at 1200°C gave stationary S-shape pattern, those of the rest were transient modes with hysteresis. From the voltammetric considerations, a reversible oxygen electrode process where diffuion of free oxygen anion or silicate anion may be a rate-determining stage was tentatively proposed. Approximate estimations of decomposition voltage supported that a sole reaction process such as the decomposition of Na(2)O or indirect decomposition of SiO(2) in the melt was most probable. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 101 |
| End Page | 105 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307459 |
| JaLCDOI | 10.18926/15613 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_95.pdf |
| Author | Suefusa Kiyoshi| Monobe Kazuo| |
| Abstract | Polyethylene was crytallized from the molten film under temperature gradient. As a result, the optically positive spherulites were observed, though only the negative spherulites had been observed previOusly in polyethylene. When the radial structure units twisted regulary in a spherulite are formed parallel to the surface of the film, the spberulite is usually optically negative in polyethylene. In this study, the temperature gradient normal to the surface of the film gives so significant tilt of the radial structure units formed to the surface of the film that the radial refractive index becomes larger than the tangential one under the transmitted polarized light and the spherulites have optically positive behavior. The optical behaviors of the polyethylene spherulites and the crystallizing condition were studied and discussed. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 95 |
| End Page | 100 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307360 |
| JaLCDOI | 10.18926/15612 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_89.pdf |
| Author | Monobe Kazuo| Yamashita Yuhiko| Fujiwara Yasuo| Fujiwara Masahiko| |
| Abstract | It was shown that the fibrous crystals of isotactic polybutene-l crystallized from solution under shearing stress are also composed of the central threads with an extended chain character and the epitaxally deposited lamellae with a folded chain character. The characteristic behaviors in this polymer exist in; (1) that the resulting crystals possess the hexagonal modification of form 1'; (2) that at low polymer concentrations the lamellar crystals with an orthorhombic modification of form Ⅲ are precipitated in similar fashion to the case in the absence of stirring; (3) that the morphology in surface replica of thick deposited film is very similar to that of melt extruded polyethylene film crystallized in a highly stressed state. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 89 |
| End Page | 94 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307171 |
| JaLCDOI | 10.18926/15611 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_85.pdf |
| Author | Monobe Kazuo| Fujiwara Yasuo| Yamashita Yuhiko| Hironaka Kiyoshi| |
| Abstract | Isotactic polypropylene was crystallized in the form of fibrous crystals from solution under shearing stress. The fibrous crystals consist of the oriented cluster of micro fibrils. From the electron microscopy and the electron diffraction study, it was found that the fine texture of this fibrous crystals is also the two component systems which are composed of the central threads with an extended chain character and the lamellae with a folded chain character deposited on the threads, as in polyethylene. Relatively larger lamellar structure than that of polyethylene was observed. The effect of crystallization conditions to the formation of the fibrous crystals from solution of isotactic polypropylene was described briefly. A characteristic melting behavior due to the melting of the central threads with an extended chain character was observed from the thermogram of differential scanning calorimeter. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 85 |
| End Page | 88 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307605 |
| JaLCDOI | 10.18926/15610 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_73.pdf |
| Author | Torii Sigeru| Isikawa Tatsuo| Takeda Akira| |
| Abstract | Amide derivatives of γ-substituted paraconic and aconic acids have been synthesized. Ultraviolet spectra of the aconic acid derivatives showed characteristic fine structure in the region of 245 to 280 mμ. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 73 |
| End Page | 76 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307690 |
| JaLCDOI | 10.18926/15609 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_69.pdf |
| Author | Torii Sigeru| Funakosi Hitosi| Takeda Akira| |
| Abstract | Monoamides of 5-substituted 4-methyl-3-carboxy-3(or 4)-alkenoic acids have been synthesized, starting with substituted itaconic anhydrides. The anhydride ring was opened by amines to afford N-aryl(or alkyl)-4-alkyl(or aryl)-3carboxy- 3(or 4}-alkenamides. The structure of the amide was elucidated by the comparison with the reference compound prepared from the corresponding Stobbe half-esters. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 69 |
| End Page | 72 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307752 |
| JaLCDOI | 10.18926/15607 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_63.pdf |
| Author | Takahashi Katsuaki| Kambara Ginjiro| Okahara Masamichi| |
| Abstract | Spectrophotometric investigations were carried out on soda-lime-silica glasses containing iron in high content, corresponding to 4.9 wt.% Fe(2)O(3), and melted under the various reducing conditions, as a part of series of studies on the redox behavior of glass. Absorption measurement was made in the range from 340 mμ to 1000 mμ. Ferric ions could not be reduced to ferrous ions completely even by the amount of carbon of four equivalents. The ratio of the strength of light absorption at 1000 mμ as a typical band of Fe(2+) ions and that at 380mμ of Fe(3+) ions was expressed as E(1000)/E(380), which was examined for glass compositions as well as various carbon amount added to glass batches. The ratio decreases as the carbon amount increases and increases with decreasing content of Na(2)O or CaO. These changes of spectrophotometric properties of glasses were discussed from the view point of state of the the iron ions. Besides, some results on oxidized glasses were also added. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 63 |
| End Page | 68 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307848 |
| JaLCDOI | 10.18926/15606 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_57.pdf |
| Author | Takahashi Teruo| Shimizu Kengo| |
| Abstract | In this report the formation of bubbles at a single circular hole is considered theoretically, as a fundamental study on contacting devices for the purpose of mass transfer operation in chemical engineering. From many previous experimental data, it is found that the mechanism of bubble formation is classified into steady bubble growth system and potential bubble formation system. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 57 |
| End Page | 62 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307610 |
| JaLCDOI | 10.18926/15605 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_51.pdf |
| Author | Takahashi Teruo| Akagi Yasuharu| |
| Abstract | The liquid phase mass transfer resistance in the Rotational-current tray is one of the most important factors in its design and performance. In this report, the holding time of liquid on the tray was studied experimentally by water-air system, and then the desorption tests were carried out by water-oxygen-air system that the liquid phase resistance were controlling. From the results of these experiments, it was found that the gas flow rate and the holding time of liquid on the tray control the tray efficiency strongly. Thus, the experimental equation for the number of transfer units based on liquid phase was derived. And also, it was found that this type of tray can be operated at high efficiency with a higher gas rate than the Kittel tray and the sieve tray without downcomer. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 51 |
| End Page | 56 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307343 |
| JaLCDOI | 10.18926/15603 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_39.pdf |
| Author | Ohta Matsuo| Hashimoto Fumio| Tanimoto Tadashi| |
| Abstract | Al-Zn, Al-Ag and Al-Cu base ternary alloys were studied by measurement of electrical resistivity. An approximate methods to estimate the binding energy between an atom of a third element and a vacancy was derived. The binding energy between a vacancy and an atom of Cu, Ag, Au, Be, Ca, Cd, In, Si, Ti, Ge, Zr, Sn, Pb or Mn was estimated to be <0.23, 0.25,> 0.35, 0.28, 0.27, 0.32, 0.39, 0.28, 0.30, 0.33, 0.33, 0.43, >0.38 or <0.23 (±0.05) eV, respectively. The results may be summarized as follows: (I) The ratio of the time required to reach the maximum electrical resistivity in isothermal aging curves of the Al-Zn-X or Al-Ag-X ternary alloy to that in the Al-Zn or Al-Ag binary alloy may be inversely proportional to the ratio of the concentration of vacancies bound to Zn or Ag atoms immediately after quenching in the ternary alloy to that in the binary alloy. And also the ratio of initial rate of clustering for AI-Cu-X ternary alloy to that in the binary alloy may be inversely proportional to the ratio of the concentration of vacancies bound to Cu atoms immediately after quenching in the ternary alloy to that in the binary alloy. It is possible to deduce the binding energy between an atom of X element and a vacancy using this relations. (2) The effect of the valence of the solute element on the binding energy between an atom of a third element and a vacancy was remarkable. (3) The effect of the radius of an atom of the solute element on the binding energy is also observed, but this effect is smaller than that of the valence. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 39 |
| End Page | 50 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307944 |
| JaLCDOI | 10.18926/15602 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_31.pdf |
| Author | Wada Tsutomu| Shimizu Akira| |
| Abstract | This study is concerned with a developed method for obtaining the quantitative relations between the input or output characteristics and the geometric parameters of the wall reattachment fiuidic devices. In this report, it is shown analytically and experimentally that the characteristics can be represented by the functions, dependent on the geometric parameters only, with non dimensional quantities, if the Reynolds number at the main jet nozzle is sufficiently large. Accordingly, the quantitative relations of the geometric parameters may be analyzed more easily. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 31 |
| End Page | 37 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307757 |
| JaLCDOI | 10.18926/15600 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_23.pdf |
| Author | Sayama Hayatoshi| Oi Ko| |
| Abstract | This paper deals with the optimization problem of extraction processes with recycle and immiscible solvent. Gradient methods using control variable iteration require a trial and error procedure to solve process and overall equations for this problem. A new formulation is presented to eliminate such a trial and error procedure. First order and second-order convergence gradient methods were applied to determine the optimum solvent distribution in cross-current extraction with recycle and immiscible solvent. The Fletcher-Powell method converged most rapidly in all cases. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 23 |
| End Page | 29 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307880 |
| JaLCDOI | 10.18926/15599 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_17.pdf |
| Author | Osaki Hirokazu| Kikuchi Susnmu| |
| Abstract | The measurement of the flicker value is a method to estimate the degree of the fatigue. This method is investigated by several authors. (1),(2) The control chart of the flicker value was used for one method of the labor management and found that this chart showed the learning trend. In this paper, the simulator of automobile was used to examine the relation between the variation of the flicker value and the driving environment, the learning process of the reaction and the relation between the flicker pattern and the learning process in the working hours. These were contributed to find the beginning of the stationary condition and which group was adapted to this work. Data was analyzed by statistical methods. It was found in this study that the variation of the flicker value and the learning process of the reaction were connected with each other. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 17 |
| End Page | 22 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307774 |
| JaLCDOI | 10.18926/15598 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_13.pdf |
| Author | Hirose Koji| Asano Yoshihiro| |
| Abstract | The friction coefficient of sectionally rough pipes has not been studied yet. The friction coefficient for turbulent flow through sectionally roughened square ducts is experimentally studied. Four arrangements of rough surfaces are used to obtain the sectionally roughened square ducts. It is attempted to predict the friction coefficient for sectionally roughened square ducts from the friction coefficients for alloverly roughened and smooth square ducts. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 13 |
| End Page | 16 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307548 |
| JaLCDOI | 10.18926/15596 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_3_1.pdf |
| Author | Honda Kazuo| Konaga Tetsuro| |
| Abstract | Broadly speaking, there are three kinds of approaches to investigate the deformation and fracture of materials, that is, the microscopic (metallurgical), macroscopic(mechanical) and theoretical (mathematical) researches. It is necessary, however, to bridge the gap which persists among of them. Many investigations on the form of plastically deformed zone at a crack tip, the distribution of plastic strain in plastic zone and fracture criterion have been made for the purpose to clarify the mechanism on initiation and propagation of cracks. In this paper, the authors report the studies, from the standpoint of microscopic views, on the crystal deformation at the tip of crac's in notched specimen during fatigue process. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1968-09-01 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 11 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307236 |
