68 research outputs found
ジュウリョク クッセイ ト ハイ ハッセイ ニ カンヨスル シロイヌナズナ SGR2 SHOOT GRAVITROPISM2 ノ ブンシ イデンガクテキ ケンキュウ
No full text京都大学0048新制・課程博士博士(理学)甲第9384号理博第2519号新制||理||1301(附属図書館)UT51-2002-G142京都大学大学院理学研究科生物科学専攻(主査)教授 長谷 あきら, 教授 岡田 清孝, 教授 西村 いくこ学位規則第4条第1項該当Doctor of ScienceKyoto UniversityDA
Defects in Dynamics and Functions of Actin Filament in Arabidopsis Caused by the Dominant-Negative Actin fiz1-Induced Fragmentation of Actin Filament
No full textCan margin traders predict future stock returns in Japan?
No full textA growing body of literature suggests that investor sentiment affects stock prices both at the firm level and at the market level. This study examines the relationship between investor behavior and stock returns focusing on Japanese margin transactions using weekly data from 1994 to 2003. Margin trading is dominated by individual investors in Japan. In analysis at the firm level, we find a significant cross-sectional relationship between margin buying and stock returns. Both market-level and firm-level analyses show that margin buying traders follow herding behavior. They seem to follow positive feedback trading behavior for small-firm stocks and negative feedback trading behavior for large firm stocks. Our results show that information about margin buying helps predict future stock returns, especially for small-firm stocks at short horizons. The predictive power does not diminish even after controlling for firm size and liquidity.Behavioral finance Investor sentiment Margin trading Japan
Effect of oral administration of sodium bicarbonate on surface EMG activity during repeated cycling sprints
No full textThe purpose of this study was to determine the effect of oral administration of sodium bicarbonate (NaHCO3) on surface electromyogram (SEMG) activity from the vastus lateralis (VL) during repeated cycling sprints (RCS). Subjects performed two RCS tests (ten 10-s sprints) interspersed with both 30-s and 360-s recovery periods 1 h after oral administration of either NaHCO3 (RCSAlk) or CaCO3 (RCSPla) in a random counterbalanced order. Recovery periods of 360 s were set before the 5th and 9th sprints. The rate of decrease in plasma HCO3− concentration during RCS was significantly greater in RCSAlk than in RCSPla, but the rates of decline in blood pH during the two RCS tests were similar. There was no difference between change in plasma lactate concentration in RCSAlk and that in RCSPla. Performance during RCSAlk was similar to that during RCSPla. There were no differences in oxygen uptake immediately before each cycling sprint (preVO2) and in SEMG activity between RCSAlk and RCSPla. In conclusion, oral administration of NaHCO3 did not affect SEMG activity from the VL. This suggests that the muscle recruitment strategy during RCS is not determined by only intramuscular pH
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