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( Takeshige Takahashi ),( Shin Ichi Iwaishi ),( Yukio Yanagimoto ),( Takami Kai ) 한국화학공학회 1997 Korean Journal of Chemical Engineering Vol.14 No.6
The pore radius of the silica glass prepared from a borosilicate glass could be controlled by the content of alumina in the starting glass in the range from 1.9 nm (0 wt% alumina) to 1.9 nm (4.5 wt%). The hydrogenation of three kinds of 1-hexenes and 1-octenes, respectively, was carried out over nickel catalysts supported on a series of the porous glasses different in pore size to elucidate the effects of pore size on the rates of hydrogenation. The rates over the catalyst with the largest pore radius (1.9 nm) were almost the same among the 1-hexenes and 1-octenes, respectively. As the pore radius decreased, however, there was observed an increasing tendency that the rates of branched (or more spherical) olefins such as 3,3-dimethyl-1-butene and 2,4,4-trimethyl-1-pentene far exceeded than those of the corresponding linear olefins, i.e. 1-hexene and 1-octene, respectively. This shape selective behavior is quite different from that of the zeolite-supported catalyst. These results confirm that a catalyst support with unique shape selectivity can be synthesized from the borosilicate glass with a small amount of alumina.
Takeshige, Nobuyuki,Yin, Guang,Ohnaka, Keizo,Kono, Suminori,Ueki, Takashi,Tanaka, Masao,Maehara, Yoshihiko,Okamura, Takeshi,Ikejiri, Koji,Maekawa, Takafumi,Yasunami, Yohichi,Takenaka, Kenji,Ichimiya, Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.5
Much interest has been drawn to possible associations between vitamin D receptor (VDR) gene polymorphisms and colorectal cancer risk in conjunction with potentially protective effects of calcium and vitamin D. In a study of 685 cases of colorectal cancer and 778 community controls in Japan, we examined the associations of the FokI, BsmI, ApaI, and TaqI polymorphisms with colorectal cancer risk and effect modification by dietary calcium and vitamin D. Genotypes were determined by the PCR-RFLP method. The ApaI polymorphism seemed to be associated with a decreased risk of colorectal cancer, particularly of rectal cancer. The adjusted odds ratio of colorectal cancer for the ApaI AA and Aa genotypes combined versus the aa genotype was 0.83 (95% confidence interval [CI] 0.67-1.02), and the corresponding value for rectal cancer was 0.75 (95%CI 0.56-0.99). A decreased risk of colorectal cancer for the ApaI AA and Aa genotypes combined was more evident in individuals with high calcium intake (interaction p=0.055). The FokI polymorphism seemed to be associated with a decreased risk of colon cancer among those with high vitamin D intake (interaction p=0.09). The BsmI and TaqI polymorphisms were unrelated to colorectal cancer risk, and the null associations were not modified by calcium or vitamin D intake. In conclusion, the ApaI polymorphism may be associated with a decreased risk of colorectal cancer in Japanese, dependent on dietary calcium intake.
Takahashi, Takeshige,Iwaishi, Shin ichi,Yamagimoto, Yukio,Kai, Takami 한국화학공학회 1997 Korean Journal of Chemical Engineering Vol.14 No.6
The pore radius of the silica glass prepared from a borosilicate glass could be controlled by the content of alumina in the starting glass in the range from 1.9 nm (0 wt% alumina) to 1.9 nm (4.5 wt%). The hydrogenation of three kinds of 1-hexenes and 1-octenes, respectively, was carried out over nickel catalysts supported on a series of the porous glasses different in pore size to elucidate the effects of pore size on the rates of hydrogenation. The rates over the catalyst with the largest pore radius (1.9 nm) were almost the same among the 1-hexenes and 1-octenes, respectively. As the pore radius decreased, however, there was observed an increasing tendency that the rates of branched (or more spherical) olefins such as 3,3-dimethyl-1-butene and 2,4,4-trimethyl-1-pentene far exceeded than those of the corresponding linear olefins, i.e. 1-hexene and 1-octene, respectively. This shape selective behavior is quite different from that of the zeolite-supported catalyst. These results confirm that a catalyst support with unique shape selectivity can be synthesized from the borosilicate glass with a small amount of alumina.
Fahrudin, Mokhamad,Otoi, Takeshige,Karja, Ni Wayan Kurniani,Murakami, Masako,Suzuki, Tatsuyuki Asian Australasian Association of Animal Productio 2001 Animal Bioscience Vol.14 No.8
In this study we explored the possibility of performing nuclear transfer in the domestic cat and assessed the ability of different culture media to support in vitro development of reconstructed cat embryos. Donor somatic cells were derived from cultured cumulus cells or explants of oviduct tissue, and recipient cytoplasts from in vitro matured oocytes. A higher percentage of cleavage (84.6% and 86.5%) and development to the morula stage (35.9% and 44.2%) was found when reconstructed embryos receiving cumulus or oviduct cells were cultured in MK1 medium, compared with those cultured in CR1aa (58.7% and 72.5%, 13.8% and 13.6%, respectively). There was no significant difference between MK1 and CR1aa media with respect to the proportion developing to the blastocyst stage (15.4% and 17.3% vs 6.8% and 8.6%, respectively, p>0.05). There was no significant effect (p>0.05) of donor cell type (cumulus and oviduct cells) on the rates of fusion (65.0% and 52.5%), cleavage (84.6% and 86.5%), development to the morula (35.9% and 44.2%), and blastocyst (15.4% and 17.3%) stages when reconstructed embryos were cultured in MK1 medium. Similar results were found for the reconstructed embryos cultured in CR1aa medium. These results show that culture medium has a significant impact on the early development of reconstructed cat embryos, whereas donor cell type does not have a significant effect.
Semi-Active Operation Assist Control Device for Manual Conveyance of Flexible Parts
Kensuke Yamaguchi,Michihiro Takeshige,Noritaka Sato,Yoshifumi Morita,Hiroyuki Ukai,Susumu Hara 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
This paper proposes an assist-handle for manual conveyance of flexible part and its semi-active operation assist control. The assist-handle consists of a handle, a variable damper and a mechanical spring. The variable damper and the mechanical spring are connected in parallel. The assist-handle can be attached to a general hand cart, through which a human operates the hand cart. In order to suppress the vibration of the flexible part, the operating force is shaped by changing the viscosity of variable damper. Then the shaped force is transmitted to the hand cart through the assist-handle. The controlled system, which consists of the assist-handle, a hand cart and a flexible part, is represented as a bilinear system. The semi-active operation assist control is designed by using the bilinear optimal control theory. The performance index of bilinear optimal control involves the vibration of the flexible part and the control input. The effectiveness of the assist-handle and the semi-active operation assist control is verified by simulations.
Urara Watanabe,Mitsuhiro Takagi,Osamu Yamato,Takeshige Otoi,Koji Okamoto 대한수의학회 2014 JOURNAL OF VETERINARY SCIENCE Vol.15 No.2
This retrospective study was conducted to confirm therelationship between pre- and postpartum metabolicparameters and postpartum reproductive performance and toclarify seasonal characteristics of the metabolic parameters byusing our metabolic profile test (MPT) database of JapaneseBlack breeding herds. In evaluation 1, MPT databases of bloodsamples from multiparous cows collected prepartum andpostpartum were divided into two groups according to calvinginterval, and each MPT parameter was compared. Inevaluation 2, the same MPT databases used in evaluation 1 weredivided into two groups according to the sampling period. Significant differences were found in the prepartal total proteinand postpartal γ-glutamyltransferase in evaluation 1. Inevaluation 2, significant differences were found in the prepartaland postpartal total protein, albumin/globulin ratio, andglucose. Clear seasonal differences in MPT results emphasizedthe usefulness of the MPT in breeding cattle herds fedhome-pasture roughage and suggest that unsatisfactoryreproductive performance during hot periods reflectsinadequate nutritional content of the diet and possible reducedfeed intake due to heat stress.