著者

坂本 勇人

出版者

早稲田大学日本語研究教育センター

雑誌

講座日本語教育

巻号頁・発行日

no.34, pp.126-142, 1998-03-31

著者

羅 軼凡 坂本 勇人 鈴木 研 三浦 英生

出版者

一般社団法人 日本機械学会

雑誌

M&M材料力学カンファレンス

巻号頁・発行日

vol.2018, 2018

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<p>Copper has been applied to the TSV interconnection structure used in microelectronic devices because of its excellent electrical and mechanical properties. However, the physical properties of copper thin film interconnections were found to vary drastically depending on their micro texture and this serious degradation of physical properties was caused by its high-volume ratio of porous grain boundaries and fine columnar grains. Thus, the long-term reliability of products cannot be guaranteed and it is largely dominated by the strength of grain boundaries. In this study, a highly-reliable evaluation method of the strength of a grain and a grain boundary in polycrystalline copper thin films was used to determine a relationship between the crystallinity and their effective strength by using EBSD (Electron Back-scattered Diffraction) analysis and micro tensile test system. The crystallinity of a grain and a grain boundary was quantitatively evaluated by using IQ (Image Quality) value calculated from the Kikuchi pattern obtained from the EBSD analysis. And the strength of a grain and a grain boundary in polycrystalline copper thin films was evaluated by using the developed micro tensile test. Finally, it was found that there was a strong crystallinity dependence of the strength of a copper grain in electroplated copper thin films. In particular, the critical resolved shear stress (CRSS) of a grain significantly decreased with the increase of the IQ value at the grain boundary.</p>

著者

高橋 敬蔵 関 正純 小崎 俊男 鏡 勲 脇元 敦彦 宮崎 雄一郎 千坂 正毅 坂本 勇人 渡久山 博美 奥富 信博 宮上 順志 瀬尾 文洋

出版者

昭和大学学士会

雑誌

昭和医学会雑誌 (ISSN:00374342)

巻号頁・発行日

vol.36, no.4, pp.307-314, 1976

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A series of 250 cases undergoing Cesarean section under spinal anesthesia were presented and analyzed from the clinical points of view.<BR>Hypotension down to 80 mmHg or less occured in 43.6% of all cases following spinal anesthesia, and the incidence of hypotension was closely related to the level of sensory analgesia (initial level) .<BR>Hypotension could be mostly restored by changing the position from supine to lateral, but the effects of vasopressor was not uniform.<BR>It was seen that the amount of rapid intravenous infusion was influenced by the duration and degree of hypotension.<BR>Associated with anesthesia, Apgar' Score was indicateed 7 to 10 points in 96% of all cases.<BR>Administration of Droperidol, Diazepam and Pentazocine were effectively choiced for any visceral pain after birth and any emesis.

著者

高橋 敬蔵 坂本 勇人 高橋 俊一 奥富 信博 山中 郁男

出版者

日本臨床麻酔学会

雑誌

日本臨床麻酔学会誌 (ISSN:02854945)

巻号頁・発行日

vol.2, no.3, pp.130-138, 1982

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Pancuronium およびその生体内代謝産物は Spectrofluorimetric metbod によれば overall として測定される. また Pancuronium は蛋白結合, 脂肪溶解により不活性化される. したがって血中 Pancuronium の濃度そのものが効果を示すと解釈することは困難である. 著者らはマグヌス法において蛙腹直筋の Acetylcholine による収縮に及ぼす血清量 (蛋白量) ならびに Pancuronium の影響を検討した結果, 血清蛋白量の増加に伴って Pancuronium の不活性化が著しく, 蛋白濃度が1.4g/dl以上では72%以上の抑制がみられた. 成人に4mgの Pancuronium Bromide を bolus に静脈内投与後5分に0.48, 30分0.4, 60分0.3 (&mu;g/ml) に相当する生物学的活性濃度を認めた.