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1,467 results on '"Saito, Yoshihiro"'

155. Effect of CVD-SiO(sub 2) film on reliability of GaAs MESFET with Ti/Pt/Au gate metal

Author

Saito, Yoshihiro, Hashinaga, Tatsuya, and Nakajima, Shigeru

Subjects
Burn-in testing -- Methods, Chemical vapor deposition -- Methods, Business, Electronics, Electronics and electrical industries
Abstract

The effect of chemical vapor deposition silicon oxide [CVD-SiO(sub 2)] films on the reliability of gallium arsenide metal semi-conductor field effect transistor (GaAs MESFET) with Ti/Pt/Au gate metal was examined. The result showed that the residual hydrogen in Si(sub 2) causes the degradation phenomena.

Published
2005

163. Polymer-coated fibrous materials as the stationary phase in packed capillary gas chromatography

Author

Saito, Yoshihiro, Tahara, Ai, Imaizumi, Motohiro, Takeichi, Tsutomu, Wada, Hiroo, and Jinno, Kiyokatsu

Subjects
Cyclic compounds -- Composition, Benzene, Alkanes, Tubulins, Silica, Polymers, Gas chromatography -- Usage, Chemical compounds, Chemistry, Analytic -- Research, Chemistry
Abstract

Synthetic polymer filaments have been introduced as the support material in packed capillary gas chromatography (GC). The filaments of the heat-resistant polymers, Zylon, Kevlar, Nomex, and Technora, were longitudinally packed into a short fused-silica capillary, followed by the conventional coating process for open-tubular GC columns. The separation of several test mixtures such as n-alkylbenzenes and n-alkanes was carried out with these polymer-coated fiber-packed capillary columns. With the coating by various polymeric materials on the surface of these filaments, the retentivity was significantly improved over the parent fiber-packed column (without polymer coating) as well as a conventional open-tubular capillary of the same length. The results demonstrated a good combination of Zylon as the support and poly(dimethylsiloxane)based materials as the coating liquid-phase for the successful GC separation of n-alkanes and polycyclic aromatic hydrocarbons (PAHs), while successful applications for other separations such as poly(ethylene glycol) coating for the separation of alcohols were also obtained. From the results it has been suggested that the selectivity of the fiber-packed column could be tuned by selecting different coating materials, indicating the promising possibility for a novel usage of fine fibrous polymers as the support material that can be combined with newly synthesized coating materials specially designed for particular separations. Taking advantage of good thermal stability of the fibers, the column temperature could be elevated to higher than 350 [degrees]C with the combination of a short metallic capillary.

Published
2003

166. Metabolic alterations in plasma after laparoscopic sleeve gastrectomy

Author

Yoshida, Naofumi, primary, Kitahama, Seiichi, additional, Yamashita, Tomoya, additional, Hirono, Yasuko, additional, Tabata, Tokiko, additional, Saito, Yoshihiro, additional, Shinohara, Ryohei, additional, Nakashima, Hitomi, additional, Emoto, Takuo, additional, Hirota, Yushi, additional, Takahashi, Tetsuya, additional, Ogawa, Wataru, additional, and Hirata, Ken‐ichi, additional

Published
2020
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168. Gut microbial composition in patients with atrial fibrillation: effects of diet and drugs

Author

Tabata, Tokiko, primary, Yamashita, Tomoya, additional, Hosomi, Koji, additional, Park, Jonguk, additional, Hayashi, Tomohiro, additional, Yoshida, Naofumi, additional, Saito, Yoshihiro, additional, Fukuzawa, Koji, additional, Konishi, Kana, additional, Murakami, Haruka, additional, Kawashima, Hitoshi, additional, Mizuguchi, Kenji, additional, Miyachi, Motohiko, additional, Kunisawa, Jun, additional, and Hirata, Ken-ichi, additional

Published
2020
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193. Analysis of adrenoreceptor agonists and antagonists: developing quantitative structure-retention relationship models for the adrenoreceptor agonists and antagonists are useful for determining the retention mechanism of these analytes

Author

Quiming, Noel S., Denola, Nerissa L., Saito, Yoshihiro, and Jinno, Kiyokatsu

Subjects
Liquid chromatography -- Usage -- Methods -- Research, Sympathomimetic agents -- Properties -- Research, Adrenergic beta blockers -- Properties -- Research, Business, Pharmaceuticals and cosmetics industries, Usage, Research, Properties, Methods
Abstract

One of the major goals in separation science is to understand the mechanisms that govern the retention of solutes in a particular chromatographic system. Quantitative structure-retention relationships (QSRR) are useful [...]

Published
2007

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