Japan Lays Out Welcome Mat for U.S. Scientists: New programs seek to entice researchers to spend time in Japanese labs, but many fellowships go begging     

Sun M 《Science (New York, N.Y.)》1989,243(4898):1546-1547

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A Global Supercomputer Race for High Stakes: Although U.S. companies currently hold a lead in technology and sales, Japanese manufacturers are now producing fast machines and slashing prices     

Sun M 《Science (New York, N.Y.)》1989,243(4894):1004-1006

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Japan faces big task in improving basic science     

Sun M 《Science (New York, N.Y.)》1989,243(4896):1285-1287

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Fang Lizhi: Speaking Out for Human Rights: Fang, an astrophysicist, is barred from traveling abroad and his movements in China are restricted, but he has not been muted     

Sun M 《Science (New York, N.Y.)》1989,244(4903):417-418

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Regulation of early flowering in Pinus banksiana     

Cecich RA  Kang H  Chalupka W 《Tree physiology》1994,14(3):275-284

Seedlings of three families of jack pine (Pinus banksiana Lamb.) were subjected to 16 combinations of photoperiod, growth environment (outdoors, greenhouse and biotron) and gibberellin (GA(4/7)) treatment. After 14 months, which included two dormancy induction periods, ovulate flowering was observed. There was a strong positive correlation between flowering and seedling height; female flower production was stimulated by both a declining photoperiod during bud development and GA(4/7) treatment; and there was an interaction between GA(4/7) treatment and family, such that the difference in flowering intensity between a late-flowering and an early-flowering family was eliminated by GA(4/7) treatment. The results suggest that the genetic control over the time of onset of flowering, and GA(4/7)-induction of flowering depend on a common mechanism.  相似文献   

冷地早熟禾总非结构碳水化合物的季节动态   总被引：1，自引：0，他引：1  

孙尚奇 《青海畜牧兽医杂志》1993,(4)

采用酸提法和水提法两种不同的提取方法对冷地早熟禾的总非结构碳水化合物(TNC)的季节动态进行了研究,同时进行了强度刈割试验以观测TNC与再生的关系。结果显示:冷地早熟禾的TNC季节变化呈宽“U”型,两种提取方法的TNC在返青后都有一个明显的下降过程,酸提TNC在开花期为最低点,水提TNC则是在抽茎期。抽穗期刈割对植株体的再生高度和分蘖数影响最大,而TNC和再生之间并未显示出显著的正相关关系。  相似文献   

New chief for OSHA     

Sun M 《Science (New York, N.Y.)》1984,224(4656):1413

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Tales of the tomato harvester     

Sun M 《Science (New York, N.Y.)》1984,223(4643):1369

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Weighing the Social Costs of Innovation: A lawsuit against the University of California challenges farm mechanization research and its consequences     

Sun M 《Science (New York, N.Y.)》1984,223(4643):1368-1369

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Lawsuit seeks a cap on fluorocarbon production     

Sun M 《Science (New York, N.Y.)》1984,226(4680):1297

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