All issues
Volume 19 (1986)
- Issue 6 Pages 497-
- Issue 5 Pages 361-
- Issue 4 Pages 251-
- Issue 3 Pages 161-
- Issue 2 Pages 91-
- Issue 1 Pages 1-
Volume 19, Issue 2
Displaying 1-15 of 15 articles from this issue
- |<
- <
- 1
- >
- >|
-
TADASHI SHIROTSUKA, KAORU ONOE, AYUMU YOKOYAMA1986 Volume 19 Issue 2 Pages 91-95
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSIt is known that the catalytic activity of LaNi5 increases during CO hydrogenation due to a structure change into Ni/La2O3 by oxygen. Oxidation treatment is therefore thought to be useful in controlling nickel dispersion on the surface area. However, few studies of the relation between oxidation of LaNi5 and nickel dispersion have been made. Consequently, in this study the effects of oxidation on nickel dispersion under various oxidation temperatures and uptakes of oxygen per total weight were examined.View full abstractDownload PDF (455K) -
TAMOTSU HANZAWA, AKIHISA SAKO, KUNIO KATO1986 Volume 19 Issue 2 Pages 96-103
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSVelocity and temperature distributions and heat transfer coefficient with combined free and forced laminar convection were investigated for annular flow between two vertical concentric cylinders, where a part of the inner cylinder was heated. By visualization of the flow pattern with a tracer, the fundamental equations of flow and heat transfer were derived and solved numerically. The velocity and temperature distributions in the annulus and the heat transfer coefficient on the heated wall were calculated with air. The range of Grashof number was 106-5×107, that of Reynolds number 25-800, radius ratio 1.2-3.7 and aspect ratio (cylinder length divided by annular gap) 3.7-22. The experimental temperature distributions and the heat transfer coefficient were in close agreement with the calculated values.View full abstractDownload PDF (480K) -
TATSUO NISHIMURA, TADASHI YOSHINO, YUJI KAWAMURA1986 Volume 19 Issue 2 Pages 104-110
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSA numerical analysis of pulsatile flow in a wavy channel with periodically converging-diverging cross sections was performed by the finite element method. The present treatment was limited to the Stokes flow regime, and the effects of Womersley number and amplitude coefficient of flow rate oscillation on the flow behavior and wall vorticity were studied.
As the Womersley number increases, the flow pattern departs from the quasi-steady state. A circulation vortex occurs during the deceleration phase and the vortex behavior is dependent on both the Womersley number and the amplitude coefficient of flow rate oscillation. The dynamic response of the wall vorticity to the flow rate is dependent on the Womersley number only. The amplitude ratio and the phase difference vary sharply along the wavy wall, and these minimum and maximum values appear at the minimum cross section and near the maximum cross section of the channel, respectively.View full abstractDownload PDF (498K) -
SATORU MIZUTANI, SHINJI IIJIMA, TAKESHI KOBAYASHI1986 Volume 19 Issue 2 Pages 111-116
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSIn fed-batch cultivation of Escherichia coli harboring a runaway-replication plasmid pCP3, runaway replication could not be induced at all by shifting the cultivation temperature from 30 to 42°C, which has normally been used in small-scale experiments. Therefore, cultivation conditions were reexamined by shake-flask cultivations. It was found that the plasmid copy number was restricted to a low level at 25°C but increased gradually at 30°C, and that full runaway replication could be induced at 37°C.
Thus, the recombinant E. coli was cultivated at 25°C in fed-batch culture using a minifermenter, and then the temperature was shifted to 37°C. When runaway replication was induced in the middle logarithmic growth phase (2.0kg dry cell/m3), the gene product was amplified almost 40-fold. Although overproduction of the gene product could be induced in the late logarithmic growth phase (10.4 kg dry cell/m3), the extent of amplification decreased.View full abstractDownload PDF (582K) -
YOSHIKAZU MIYAKE, YASUNOBU IMANISHI, YUJI KATAYAMA, TOSHITSUGU HAMATAN ...1986 Volume 19 Issue 2 Pages 117-125
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSThe solvent extraction of copper by use of the homologous series of o-hydroxyoxime with different alkyl chains was studied to elucidate the extraction mechanism. The physicochemical properties of hydroxyoxime required to evaluate the extraction rate, such as the distribution constant, interfacial properties, pKa and extraction constant, were measured. The forward and stripping extraction rates were measured by a Lewis-type transfer cell. The extraction rate of copper by a water-soluble, surface-inactive agent can be reasonably interpreted by considering the diffusion process with complex formation in the aqueous stagnant layer. Complex formation is limited by the rate of 1:1 complex formation. On the other hand, the extraction rate with an insoluble, surface-active reagent can be interpreted by the interfacial reaction, which is limited by the reaction rate between the adsorbed 1:1 complex and the dissolved reagent in the aqueous phase.View full abstractDownload PDF (722K) -
TOKIHIRO KAGO, TETSUYA SARUWATARI, MAKOTO KASHIMA, SHIGEHARU MOROOKA, ...1986 Volume 19 Issue 2 Pages 125-131
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSHeat transfer coefficients and flow characteristics were measured in a horizontal loop of 51.5 mm diam. pipe. The viscosities of liquid and slurry were changed in the range of 0.8-55 mPa •.s. The experiments were carried out in the regimes of plug and slug flow.
The pressure drop in the straight sections was smaller than that predicted by the Lockhart-Martinelli correlation and was correlated by a newly proposed equation.
The gas holdup increased with increasing gas velocity and decreasing liquid or slurry velocity. A correlation of the gas holdup is presented.
The heat transfer coefficients, h, increased with increasing liquid velocity and decreased with increasing liquid viscosity. In the range of the superficial gas velocity Ug=0.2-1 m•s-1, h was nearly independent of the gas velocity. In the range of Ug=1-10m•s-1, however, h increased with increasing gas velocity. The values of h in the present experiments as well as those in the literature are well described by the equation proposed in this work.View full abstractDownload PDF (524K) -
KATSUTOSHI INOUE, HIROKI TSUNOMACHI, TAKESHI MARUUCHI1986 Volume 19 Issue 2 Pages 131-133
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSDownload PDF (216K) -
KOEI KAWAKAMI, TOMINARI OKUMURA, KOICHIRO KUSUNOKI, KATSUKI KUSAKABE, ...1986 Volume 19 Issue 2 Pages 134-136
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSDownload PDF (217K) -
SHIGEHARU MOROOKA, YASUO KATO, SUMIO IKEJIRI, MITSUTOSHI NAKAJIMA, HIS ...1986 Volume 19 Issue 2 Pages 137-139
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSDownload PDF (187K) -
NOBUYUKI FUJISAWA, HIROYUKI SHIRAI1986 Volume 19 Issue 2 Pages 140-141
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSDownload PDF (157K) -
TATSUO NISHIMURA, YOSHIHIKO KAJIMOTO, YUJI KAWAMURA1986 Volume 19 Issue 2 Pages 142-144
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSDownload PDF (297K) -
NOBUYUKI SATO, HIROSHI INOMATA, KUNIO ARAI, SHOZABURO SAITO1986 Volume 19 Issue 2 Pages 145-147
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSDownload PDF (212K) -
TAKESHI KATAOKA, TADAAKI NISHIKI, MASAO YAMAUCHI1986 Volume 19 Issue 2 Pages 147-149
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSDownload PDF (204K) -
HARUO ISHIKAWA, HIROKAZU NISHIDA, HARUO HIKITA1986 Volume 19 Issue 2 Pages 149-153
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSDownload PDF (385K) -
K. TOJO, C. C. CHIANG, Y. W. CHIEN1986 Volume 19 Issue 2 Pages 153-155
Published: April 20, 1986
Released on J-STAGE: April 19, 2006
JOURNAL FREE ACCESSDownload PDF (163K)
- |<
- <
- 1
- >
- >|