検索結果 886 件
| JaLCDOI | 10.18926/15587 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_93.pdf |
| 著者 | Moriwake Tosio| |
| 抄録 | The Reformatsky reaction with t-butyl haloacetate could be effected in the presence of lithium or aluminum, but the latter metal proved to be disappointing as a condensing agent. Condensation of benzophenone with t-butyl chloroacetate and bromoacetate in the presence of lithium gave corresponding β-hydroxy esters in yields of 43 and 58%, respectively, and comparable with those of other condensing methods. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 93 |
| 終了ページ | 95 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307573 |
| JaLCDOI | 10.18926/15586 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_88.pdf |
| 著者 | Monobe Kazuo| Fujiwara Yasuo| |
| 抄録 | Single crystals of two crystatalline forms, α and γ, in nylon 12 were obtained from dilute solutions. The single crystals of γ-form from diols solutions are ribbon like lamellae in shape, and that of α-form obtained from solution in water-formic acid are parallelogramic. Electron diffraction study shows that chain packings in single crystals of two crystalline forms are very similar to those of nylon 6, respectively |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 88 |
| 終了ページ | 92 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307315 |
| JaLCDOI | 10.18926/15585 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_84.pdf |
| 著者 | Monobe Kazuo| Yamashita Yuhiko| |
| 抄録 | The preparative method of giant single crystals of PEO and the experimental results of them by x-ray diffraction and electron microscopy are described. The crystallization of PEO was carried out in a two dimensional crystallization apparatus. From the tridirectional x-ray diffraction patterns on the resulting platelike crystals, it was confirmed that these crystals have a single crystal-like orientation at high supercoolings, the [401] axis is parallel to a growing direction and the [001] axis is perpendicular to the wide surface, and a double orientation at low supercoolings, two axes of [421] and [421] are parallel to a growing direction and the [001] axis is perpendicular to the wide surface. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 84 |
| 終了ページ | 87 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307197 |
| JaLCDOI | 10.18926/15583 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_80.pdf |
| 著者 | Takeda Akira| Wada Satosi| Uno Takaaki| |
| 抄録 | The condensation of ethyl chloroarylpyruvate (Ⅰ) with ethyl malonate in the presence of sodium ethoxide afforded γ-aryl-α,β-dicarbethoxy-⊿(β),γ-butenolide. On the basis of the chemical and spectral evidences, the structure of the product (II) has been elucidated. This reaction provides new routes to α,β-dicarboalkoxy-γ-butyrolactones and/or to γ-ketocarboxylic acids. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 80 |
| 終了ページ | 83 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307243 |
| JaLCDOI | 10.18926/15582 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_74.pdf |
| 著者 | Takeda Akira| Kariya Yosihiro| Torii Sigeru| |
| 抄録 | The ring opening of epoxide group in the reaction of ethyl ,β-alkylglycidates with sodiomalonate was observed mostly at the α-position of the glycidates. Ethyl β-ethylglycidate, however, on treatment with sodiomalonate gave ten percent of β-fission product, elucidated by NMR spectra. The reaction sequence provides a general preparative route to γ-alkylparaconic acids and their derivatives. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 74 |
| 終了ページ | 79 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307843 |
| JaLCDOI | 10.18926/15580 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_68.pdf |
| 著者 | Takeda Akira| Nagae Hiroyuki| Torii Sigeru| |
| 抄録 | The reaction of ethyl γ,γ-dialkylparaconate with aromatic aldehydes, i.e., benzaldehyde, anisaldehyde, p-chlorobenzaldehyde, and piperonal, has been investigated. The condensation took place at the α-position of the lactone ring. As the acidic components, α-benzylideneparaconic acids and α-benzylidene-β-alkylidensuccinic acids were obtained in 25-48% and 7-15% yields, respectively. From the neutral portions small amount of ethyl benzylideneparaconates were separated. During the course of distillation ethyl α-benzylideneparaconate was partially converted into α-benzylidene-γ-methy-γ-ethylbutyrolactone. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 68 |
| 終了ページ | 73 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307999 |
| JaLCDOI | 10.18926/15579 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_62.pdf |
| 著者 | Hirai Taketsugu| Miura Yoshinari| Yoshio Tetsuo| Takahashi Katsuaki| |
| 抄録 | Decomposition voltages of Na(2)O (30-50 mole % )-SiO(2) binary system were estimated at the temperature range of 700~1200℃ by commutator technique. As the experimental procedure, relations between electrolytic current and resulting polarization potential without ohmic loss were observed by 20 cps mechanical commutator, using Pt|Na(2)O-SiO(2)|Pt electrochemical system. Experimental decomposition voltages determined from above relationship were the value of 1.5~2.0 V at the temperature beyond about 800℃ with comparatively less reproducibility. Further investigations on the decomposition reaction mechanisms were made in reference to both a series of reversible decomposition voltages derived from thermodynamic calculations on the several proposed decomposition reactions and chemical equilibrium in vitreous silicates. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 62 |
| 終了ページ | 67 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307847 |
| JaLCDOI | 10.18926/15578 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_55.pdf |
| 著者 | Takahashi Katsuaki| Yoshio Tetsuo| Miura Yoshinari| Hirai Taketsugu| |
| 抄録 | The method for continuous measurement of the high temperature heat content, developed by W.Oelsen et al. and applied to the glasses by M.Tashiro, was examined and modified in some points. Relations between the temperature and heat contents referred to the standard temperature 25℃, were determined for the some glasses of R(2)O-SiO(2) system, and the specific heats as well as the entropies were calculated. Comparing the results, some views have been obtained relating to the effect of the species and content of alkali ions on the thermodynamic quantities of such glasses. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 55 |
| 終了ページ | 61 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307355 |
| JaLCDOI | 10.18926/15577 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_50.pdf |
| 著者 | Takahashi Teruo| Akagi Yasuharu| |
| 抄録 | Recently various trays in which mass transfer operations are carried out have been developed, and the authors have designed one of the rotational-current tray which is designed to direct flow of ascending gas horizontally across the tray surface. In this report, as a fundamental study for mass transfer on this tray, flow mechanism and liquid holdup on the tray are considered experimentally. Experiments are carried out by water-air, methanol-water air and gricerinewater-air systems. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 50 |
| 終了ページ | 54 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307498 |
| JaLCDOI | 10.18926/15575 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_2_43.pdf |
| 著者 | Takahashi Teruo| Fujita Kozo| |
| 抄録 | In this report, the analogies of the maximum allowable liquid and gas velocities in various countercurrent gas-liquid contactors of column type are considered analytically. That is, by plotting the flooding points of various columns in a gas-liquid separated coordinates, the similar curves have been obtained in each column. Because the difference of these curves is due to the shape of each column, the difference of each shape must be corrected and evaluated as a ahape factor. Then, by containing this factor in coordinate variables, various flooding points in each column may be correlated by a single curve. If this correlation curve is used, the flooding velocity can be estimated easily, and the maximum allowable liquid and gas velocities in these countercurrent contactors of column type can be compared. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1967-04-01 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 43 |
| 終了ページ | 49 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307818 |
| JaLCDOI | 10.18926/15547 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_1_59.pdf |
| 著者 | Yamashista Yuhiko| Yokoyama Fumiyoshi| Monobe Kazuo| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1966-03-31 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 59 |
| 終了ページ | 62 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307666 |
| JaLCDOI | 10.18926/15546 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_1_54.pdf |
| 著者 | Moriwake Tosio| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1966-03-31 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 54 |
| 終了ページ | 58 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307698 |
| JaLCDOI | 10.18926/15545 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_1_51.pdf |
| 著者 | Moriwake Tosio| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1966-03-31 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 51 |
| 終了ページ | 53 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307140 |
| JaLCDOI | 10.18926/15544 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_1_47.pdf |
| 著者 | Takeda Akira| Wada Satosi| Ohmura Yutaka| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1966-03-31 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 47 |
| 終了ページ | 50 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307888 |
| JaLCDOI | 10.18926/15543 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_1_44.pdf |
| 著者 | Takeda Akira| Torii Sigeru| |
| 抄録 | 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. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1966-03-31 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 44 |
| 終了ページ | 46 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307861 |
| JaLCDOI | 10.18926/15542 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_1_37.pdf |
| 著者 | Takahashi Katsuaki| Tanioka Mamoru| Yoshio Tetsuo| |
| 抄録 | Studies were carried out in order to know in some detail the transport phenomena through the interface in the viscous liquid moving in laminar flow. Experiments were carried out using ca. 88% glycerin solution, one added with an acid, and the other with alkali together with a small amount of phenolphthalein. Acidic glycerin solution was supplied to a long transparent cuvette of rectangular cross section through which the liquid was made to move slowly enough to establish the laminar flow, thin cords of coloured basic solution were introduced in the direction normal to the axis of flow at regular time intervals. The so obtained patterns of bending cords shortening in regular succession were photographed also at regular time intervals. The authors attribute the origin of the changing patterns of the cords to the velocity gradient existing in the acidic solution which accelerates the diffusion by increasing the concentration gradient near the cords as well as the increase of the interfacial area, and also the decrease of the thickness of the cords. Based on these idea a mathematical analysis was carried out and was obtained an equation which gives the change of the concentration distribution of two dimensional cords. Fair agreement was obtained between the results of mathematical analysis and those of experiments. Furthermore, the influence of the thickness of the cords, and that of the velocity gradient as well as of the diffusion coefficient on the concentration at the center of the cords were discussed. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1966-03-31 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 37 |
| 終了ページ | 43 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307624 |
| JaLCDOI | 10.18926/15540 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_1_29.pdf |
| 著者 | Takahashi Teruo| |
| 抄録 | In this report, gas absorption by a rotating cylindrical liquid jet, whose water traveling length is short, is considered experimentally. Experiments of absorption are proceeded in pure C0(2) gas and water at 20℃: C0(2) gas is cross-currently contacted with a liquid jet. From experimental results, absorption rate was observed to be large immediately after liquid was spouted from small hole drilled through rotating cylinder. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1966-03-31 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 29 |
| 終了ページ | 36 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307556 |
| JaLCDOI | 10.18926/15486 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_25_1_23.pdf |
| 著者 | 三浦 嘉也| 高田 潤| 尾坂 明義| 河村 利夫| |
| 抄録 | Zinc oxide films were prepared on silica glass substrates by the use of an r.f. activated reactive evaporation (ARE) method, and were examined by X-ray diffraction (XRD) and scanning electron micrograph (SEM). XRD measurements indicate that the films were c-axis oriented and that an r.f. plasma of Zn and O was necessary for the ZnO film deposition. Substrate temperature, oxygen gas pressure, evaporation rate, r.f. power and inlet position of oxygen gas effect the c-axis orientation, the growth rate and the microstructure of the films. Optimum conditions for a dense film with a fine texture of the surface and having good crystallinity were as follows: the substrate temperature;400℃, the evaporation rate;5.0(A)/s, the oxygen pressure;2.0x10(-4) Torr, the r.f. power;150 to 200W, and the oxygen gas inlet near the substrate. For the film prepared under the optimum conditions, the standard deviation σ of the rocking curve for the (002) diffraction was 1.9deg, smaller than that of the film prepared by using an r.f. sputtering method. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1990-12-14 |
| 巻 | 25巻 |
| 号 | 1号 |
| 開始ページ | 23 |
| 終了ページ | 35 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307600 |
| JaLCDOI | 10.18926/15474 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_24_1_53.pdf |
| 著者 | 尾坂 明義| Takao Seiji| 小田 喜一| 高田 潤| 三浦 嘉也| |
| 抄録 | Electrical resistance and X-ray photoelectron depth profile analysis are studied for antimony doped tin oxide films developed on silica, alkali-free and sodalime slide glass substrates. The sodium ions diffused from the substrates to the films prevented the crystal growth of rutile type tin oxide in the film, resulting in the high electrical resistance. A diffusion layer has been detected for each film with diffuse profiles of multi valent cations (Sn, Si or Ca) at the interface of the tin oxide film and substrate. A greater amount of sodium atoms have been detected in the film developed on the soda-lime glass while almost no sodium atoms have been found in those on the other substrates. This can be explained by the diffusion of the sodium ions in the substrate due to a drastic hydronium-sodium exchange mechanism under highly acidic conditions during the dipping and drying processes. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1989-11-29 |
| 巻 | 24巻 |
| 号 | 1号 |
| 開始ページ | 53 |
| 終了ページ | 61 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307279 |
| JaLCDOI | 10.18926/15473 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_26_2_61.pdf |
| 著者 | Osaka, Akiyoshi| Kawabata Kouji| Nanba, Tokuro| Takada, Jun| Miura, Yoshinari| |
| 抄録 | Mullite-dispersed silica ceramics were prepared through sol-gel processing by the use of tetraethoxy silane, aluminium nitrate and aluminium isopropoxide as the Si and Al sources where HCl and HN0(3) were the catalyst. Effect of the starting materials, solvents and catalysts was examined on the gelation time or temperature of mullite precipitation. Apparent activation energy of gelation ranged from 80 to 95kJ/mol. The presence of AI in the sols elongated the gelling time suggesting the formation of chelate bonds between AI and Si-OR or Si-OH bonds. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 1992-03-28 |
| 巻 | 26巻 |
| 号 | 2号 |
| 開始ページ | 61 |
| 終了ページ | 67 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307416 |