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711.
712.
Asano T Inoue T Kurose N Hiraoka N Kawakita S 《Journal of Bioscience and Bioengineering》1999,87(5):697-699
Sake yeast strains were improved so as to produce larger amounts of isoamyl acetate than the parental strain by isolating econazole-resistant mutants. Econazole, an imidazole antimycotic, directly interacts with unsaturated fatty acids in the yeast cell membrane, where it also inhibits the synthesis of ergosterol and decreases the ratio of unsaturated to saturated fatty acids. In contrast, alcohol acetyltransferase (AATase), which catalyzes the synthesis of isoamyl acetate, is inhibited by unsaturated fatty acids. Fifty econazole-resistant mutants were isolated from a sake yeast, Kyokai no. 701, several of which produced approximately 1.4 to 2.4 times more isoamyl acetate and an almost equal amount of isoamyl alcohol compared with the parental strain. The AATase activities of the mutants in koji extract were 1.2 to 1.4 times higher, and the unsaturated to saturated fatty acid ratios were lower, than in the parental strain. 相似文献
713.
E. Kandyel T. Kamiyama K. Oikawa S. Torii K. Mori H. Asano M. A. Sekkina 《Journal of Superconductivity》2000,13(1):111-119
Two series of Hg-based oxides (Hg0.7Mo0.3)Sr2(Ca1–x
R
x
)Cu2O
z
(R = Nd and Pr, 0.2 x 0.7) have been synthesized. Electrical-resistivity measurements show that these compounds are superconductors with maximum onset T
c
of 107 and 102 K for Nd- and Pr-containing samples, respectively. The neutron powder diffraction experiments on both as-prepared and O2-annealed samples of R = Nd revealed that the O(3) site at the HgO sheets are fully occupied and shifted towards the Hg/Mo site to form Mo–O bonds. 相似文献
714.
Hironori Mitake Kazuyuki Asano Takafumi Aoki Salvati Marc Makoto Sato Shoichi Hasegawa 《Computer Graphics Forum》2009,28(2):279-287
Various forms of art and entertainment involve many different characters, and advances in human interfaces have necessitated physical interactions in order to develop an improved sense of reality. In this paper we propose a method for generating the motions of characters using multidimensional keyframe animation in parallel with real-time physical simulation. The method generates characters capable of physical interaction, and also allows animators to use traditional methods for designing character motion. We have implemented the system and confirmed its effectiveness experimentally. 相似文献
715.
Yutaka Furukawa Seiji Shin‐Ya Haruhisa Miyake Hideharu Kishino Minoru Yamada Hitoshi Kato Masakuni Sato 《应用聚合物科学杂志》2001,82(13):3333-3340
The reactivity of cyclosiloxane with 3,3,4,4,5,5,6,6,6‐nonafluorohexyl group and its application to fluorosilicone synthesis were studied. In contrast to the polymerization of the commercially available 1,3,5‐tris(3,3,3‐trifluoropropyl)‐1,3,5‐trimethylcyclotrisiloxane (CF3–D3), the polymerization of 1,3,5‐tris(3,3,4,4,5,5,6,6,6‐nonafluorohexyl)‐1,3,5‐trimethylcyclotrisiloxane (C4F9–D3) with sodium hydroxide yielded 1,3,5,7‐tetrakis(3,3,4,4,5,5,6,6,6‐nonafluorohexyl)‐1,3,5,7‐tetramethylcyclotetrasiloxane {[C4F9CH2CH2(CH3)SiO]4 (C4F9–D4)} as the major product, which was the result of the depolymerization by a backbiting mechanism. On the other hand, the polymerization of C4F9–D3 with trifluoromethanesulfonic acid yielded a polymer with good reproducibility, although the distribution of molecular weight tended to be bimodal. C4F9–D3 was also successfully copolymerized with octamethylcyclotetrasiloxane (D4). The properties of the obtained copolymers changed almost linearly with the amount of [C4F9C2H4(CH3)SiO] units, except for the surface tension. The surface tension of the copolymer containing more than 50% [C4F9C2H4(CH3)SiO] units by weight was almost as low as that of the homopolymer. When the copolymer containing 50% [C4F9C2H4(CH3)SiO] units by weight was examined for an antifoaming agent, it worked as effectively as the homopolymer in the toluene foaming system. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 3333–3340, 2001 相似文献
716.
Yoshihide Watanabe Akihiko Asano Koji Banno Koji Yokota Masahiro Sugiura 《Catalysis Today》2001,69(1-4):209-216
A model of NOx selective reduction by hydrocarbon (HC) was developed, which takes into account the adsorption and desorption of HC. The model was applied for predicting the performance of a De–NOx catalytic reactor, working under transient conditions such as a legislative driving cycle. Diesel fuel was used as a supplemental reductant.
The behavior of HC and NOx reactions and HC adsorption and desorption has been simulated successfully by our numerical approach under the transient conditions of the simulated Japanese 10–15 driving cycle. Our model is expected to optimize the design of selective diesel NOx reduction systems using a diesel fuel as a supplemental reductant. 相似文献
717.
Araki Wakiuchi Shogo Takasuka Shigehito Asano Ryo Hashizume Aniruddha Nag Miho Hatanaka Tomoyuki Miyao Yuya Ohnishi Takamitsu Matsubara Tsuyoshi Ando Tetsunori Sugawara Mikiya Fujii Hiroharu Ajiro 《大分子材料与工程》2023,308(6):2200626
It is important to match the feeding ratio of comonomers to the composition ratio in the resulting copolymers as closely as possible in industrial production, where the goal is often to produce more a homogeneous composition in copolymers. In this study, a flow copolymerization system with a conventionally initiated free radical method, together with randomly selected polymerization conditions is investigated. It is succeeded in achieving a closer match between the composition ratio and feeding ratio than previously reported in the copolymerization of styrene with methyl methacrylate and of glycidyl methacrylate with methyl methacrylate, which will widen the range of applications, by precisely controlling the mixing and heating in a flow polymerization apparatus. This is confirmed by the fact that the estimated values of reactivity ratios, r1 and r2, which are used in the reaction kinetics of copolymerization, are close to 1. 相似文献