巻号一覧
9 巻 (1976)
- 6 号 p. 431-
- 5 号 p. 345-
- 4 号 p. 259-
- 3 号 p. 171-
- 2 号 p. 85-
- 1 号 p. 1-
9 巻, 4 号
選択された号の論文の20件中1～20を表示しています
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F. J. HSU, A. G. POLLIN, VOJTECH FRIED1976 年 9 巻 4 号 p. 259-266
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーThe exponent n in the relation E= -A/Vn is shown to be of great significance in the behavior of liquid solutions. The modified version of Flory''s theory presented here indicates that the enthalpy of mixing of binary solutions can be calculated from density measurements, if the value of n for the system is known. The method is applied to binary solutions of aliphatic hydrocarbons of various chain lengths and it is found that the value n=1.29 ±0.03 gives good agreement between measured and calculated values of HE for this group of solutions. Good agreement is also observed for systems containing spherical molecules and for mixtures composed of aromatic hydrocarbons. The advantage of using n coupled with X12 rather than the frequently applied interaction parameter, X12, alone is discussed in detail.抄録全体を表示PDF形式でダウンロード (1501K) -
KATSUMI TOCHIGI, KAZUO KOJIMA1976 年 9 巻 4 号 p. 267-273
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーInfinite dilution binary activity coefficients have been measured for 6 systems at 40 to 100°C by using an ebulliometer, to develop an accurate and rapid method for determining the group Wilson parameters for predicting liquid phase activity coefficients by "Analytical Solutions of Groups" model. The systems measured are methanol-n-heptane, ethanol-n-heptane, n-butanolwater, acetone-n-heptane, acetone-methanol, methyl ethyl ketone-water. The group Wilson parameters for any system made up of CH2, OH, CO groups have been determined at 40 to 100°C. Predictions of infinite dilution activity coefficients and isobaric vapor-liquid equilibria made for 32 binary and 8 ternary systems involving alcohols, water, paraffins, ketones showed good agreement with observed values.抄録全体を表示PDF形式でダウンロード (1134K) -
S. C. JAIN, O. P. BAGGA, K. S. N. RAJU1976 年 9 巻 4 号 p. 273-275
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーExperimental vapor-liquid equilibrium data have been obtained for the system propionic acid-m-xylene at 760 mmHg pressure using a recirculating type equilibrium still. The system formed a minimum boiling azeotrope. The activity coefficients were calculated from experimental data taking into consideration vapor phase imperfection. Nothnagel''s correlation based on chemical theory of vapor imperfection was used to estimate second virial coefficients. The data have been tested for thermodynamic consistency and correlated by Wilson equation as modified by Katayama and Tsuboka.抄録全体を表示PDF形式でダウンロード (479K) -
ISAMU NAGATA, TATSUHIKO OHTA, SHIGEO NAKAGAWA1976 年 9 巻 4 号 p. 276-281
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーPhase equilibria were studied in the systems methanol-methyl ethyl ketone, ethanol-methyl ethyl ketone, methyl ethyl ketone-2-propanol, methyl acetate-1-propanol, and methyl acetate-2-propanol under isothermal conditions. Heat of mixing data were obtained for these systems. The Wilson and NRTL equations were able to represent simultaneously these two kinds of thermodynamic quantities under the assumption that their parameters were temperature-dependent.抄録全体を表示PDF形式でダウンロード (1082K) -
YOSHIRO KITAMURA, TERUO TAKAHASHI1976 年 9 巻 4 号 p. 282-286
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーAerodynamic effects on the breakup of liquid jets in the air flow normal to the jet axis have been studied. A characteristic equation for the growth rate of disturbances is theoretically derived on the assumption that disturbances in the liquid are symmetric about the jet axis and those in the surrounding air are non-symmetric. The numerical analysis of the equation predicts that the maximum growth rate increases with the Weber number based on the density of air. The breakup length was measured by the ejection of water, ethanol and aqueous glycerol solution from a nozzle, whose axis was normal to the direction of air flow. The experimental breakup length agrees with the theoretical one in the region of air velocities less than 500 cm/sec, where the disintegration of jets by symmetric disturbances is observed and the assumption of the jet normal to the air flow appears reasonable.抄録全体を表示PDF形式でダウンロード (841K) -
RYO NAKAMURA, NAOYA YOSHIOKA1976 年 9 巻 4 号 p. 287-291
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーThe capillary jet (die swell) method for the measurement of normal stresses has been studied in terms of many variables and rheological descriptions. The present paper deals with diameter effect first reported by Powell and Middleman, and proposes that the most important parameter is the ratio of the inertial force to the elastic stress. When this parameter is greater than 1, the momentum balance equation proposed by Metzner et al. gives reasonable values for the first normal stress difference. When this parameter is less than 1, the diameter effect begins to appear and the capillary jet method is not applicable. A more pronounced diameter effect corresponds to smaller values of this parameter.抄録全体を表示PDF形式でダウンロード (877K) -
RYO NAKAMURA, NAOYA YOSHIOKA, MUNEYUKI HIGUCHP, HITOSHI HIRAP1976 年 9 巻 4 号 p. 291-293
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーLocal velocities were measured for the flow of a viscoelastic fluid from a large pipe into a small one (an abrupt contraction with diameter ratio 3.5). Under certain conditions it was found that the velocity field at the entrance was distinctly different from the expected pattern, which would be one of gradually increasing velocity near the centerline. Rather it was found that the centerline velocity at the entrance was larger than the centerline velocity in the developed downstream flow; or, in other words, a pronounced funneling was observed. This is attributed to the elastic behavior of the material.抄録全体を表示PDF形式でダウンロード (528K) -
AKINORI MATSUURA, TAKASHI AKEHATA, TAKASHI SHIRAI1976 年 9 巻 4 号 p. 294-301
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーThe axial dispersion in the liquid-phase of a gas-liquid downflow through a packed column was studied with air and water flowing concurrently in a 8.0 cm diameter column with glass spheres of 0.12, 0.26 and 0.43 cm.
The impulse response was calculated numerically from the two signals measured at two cross-sections in the bed. The response was characterized by both a peak and a very long tail, and could be represented satisfactorily by using the PDE model in which the mass transfer between the dynamic and the stagnant holdups in addition to the axial dispersion in the dynamic holdup was taken into account. Four parameters appearing in the PDE model were determined by means of the time domain curve fitting method.
Peclet number which was based on the actual velocity in the dynamic holdup ud had a constant value of 0.43 for Re''(=udρdp/μ)<150, increased with Re'' and attained another constant value of 1.7 for Re'' > 400.
The volumetric mass transfer coefficient was correlated as a function of particle size, liquid and gas velocities.
The total liquid holdup agreed well with the literature data. The fraction of the dynamic holdup varied in the range of 0.6 to 0.95 depending on the particle size and the gas and the liquid velocities. The correlation of the dynamic liquid holdup was given graphically.抄録全体を表示PDF形式でダウンロード (1478K) -
KUNIO ARAI, SHOZABURO SAITO1976 年 9 巻 4 号 p. 302-313
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーThe rate of chemical-initiated bulk polymerization is studied theoretically and experimentally over the complete course of reaction. Taking into consideration the effects of the decrease of jump frequency of a polymer segment during polymerization on the rate of each elementary reaction, a new kinetic model is proposed. This model is applied to the bulk polymerization of methyl methacrylate and styrene for several initiator concentrations and temperatures. Though the polymerization of these monomers shows very different auto-acceleration effects, experimental data of conversion and number-average and weight-average chain length can be successfully correlated to limiting conversion by this model.抄録全体を表示PDF形式でダウンロード (2886K) -
FUJIO WATANABE, YOSHIHIRO YAMADA, MASANOBU HASATANI, SACHIO SUGIYAMA1976 年 9 巻 4 号 p. 314-316
発行日: 1976/08/31
公開日: 2006/03/29
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TOMOSHIGE NITTA, OSAMU KIDO, TAKASHI KATAYAMA1976 年 9 巻 4 号 p. 317-318
発行日: 1976/08/31
公開日: 2006/03/29
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G. H. EDULJEE, K. K. TIWARI1976 年 9 巻 4 号 p. 319-321
発行日: 1976/08/31
公開日: 2006/03/29
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SHAFKAT A. BEG1976 年 9 巻 4 号 p. 322-325
発行日: 1976/08/31
公開日: 2006/03/29
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TAKESHI KATAOKA, HIROYUKI YOSHIDA1976 年 9 巻 4 号 p. 326-328
発行日: 1976/08/31
公開日: 2006/03/29
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CHIKAO ARAI, SHUJI HOSAKA, KOJI MURASE, YOSHIKI SANO1976 年 9 巻 4 号 p. 328-330
発行日: 1976/08/31
公開日: 2006/03/29
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NOBUETSU YUTANI, KEN KURAKATA, SHIGEFUMI FUJITA1976 年 9 巻 4 号 p. 330-331
発行日: 1976/08/31
公開日: 2006/03/29
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W. T. KOETSIER, W. P. M. VAN SWAAIJ, M. VAN DER MOST1976 年 9 巻 4 号 p. 332-333
発行日: 1976/08/31
公開日: 2006/03/29
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TOSHIRO ARATANI, KENJI KUEO, AKIRA MISHIMA, TAKEO YANO1976 年 9 巻 4 号 p. 334-336
発行日: 1976/08/31
公開日: 2006/03/29
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MASAHARU TAKAO, YASUHIRO MURAKAMI1976 年 9 巻 4 号 p. 336-338
発行日: 1976/08/31
公開日: 2006/03/29
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SHIGEO GOTO, MASAKAZU MATSUBARA1976 年 9 巻 4 号 p. 338-341
発行日: 1976/08/31
公開日: 2006/03/29
ジャーナル フリーPDF形式でダウンロード (672K)
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