共查询到20条相似文献，搜索用时 31 毫秒
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Carter LJ 《Science (New York, N.Y.)》1975,187(4171):45-48
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The cutaneous "rabbit": a perceptual illusion 总被引：3，自引：0，他引：3
Anomalous localizations of mechanical and electrical cutaneous pulses are produced when widely separated bodily points are successively stimulated with trains of taps. The observer experiences a manifold of discrete "phantom" impressions connecting the points actually touched. The theoretical basis for this perceptual phenomenon is not understood, but some boundary conditions are specified. 相似文献
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Thomsen L 《Science (New York, N.Y.)》1975,188(4193):1130-1131
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玉桂占是广西玉林市农业科学研究所育成的感温型早籼中熟优质稻新品种,2003年2月通过广西区品种审定.主要农艺性状(早造):株高112cm,穗长18.8cm,每穗总粒数109粒,结实率86.1%,有效穗23.2万/亩,千粒重18.2粒,面上种植示范,一般420kg/亩,中抗稻瘟病和白叶枯病.米质分析结果:糙米率79.6%,精米率71.7%,整精米率63.1%,粒长6.2mm,长宽比3.5,垩白米率2%,垩白度0.3%,碱消值6.5级,透明度3级,胶稠度64mm,直链淀粉含量12%,蛋白质含量10.4%.饭软可口,冷饭不硬,该品种抗性较高,适应性广,综合性状表现较好,具有良好的推广应用前景.现将其高产栽培技术介绍如下:…… 相似文献
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R J Samuelson 《Science (New York, N.Y.)》1967,157(796):1541-1542
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Blackburn GM Williams NH Gamblin SJ Smerdon SJ 《Science (New York, N.Y.)》2003,301(5637):1184; author reply 1184
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袁翠珍 《金陵科技学院学报》2002,18(3):103-106
从《白孔雀》的环境景物描写、作品的人物形象塑造和结构方式几个方面进行比较分析 ,得出结论 :劳伦斯的《白孔雀》受到乔治·艾略特的《弗洛斯河上的磨坊》的影响 相似文献
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当前新冠肺炎疫情已转为长期攻坚情势,由《禁食决定》拉开了野生动物防疫措施的新篇章.野生动物疫病传播"黑名单"——《国家野生动物疫病传播高危名录》因其对阻却野生动物疫病传播风险的新的法益考量使之具有创制的必要性.其应采取名录列举的呈现形式,注重内部治理梯度,实施对象野生动物的动态评估进出机制,凭借其"工具性"引导多部门法实现联动. 相似文献
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Harrison ER 《Science (New York, N.Y.)》1984,226(4677):941-945
The riddle of a dark night sky, now known as "Olbers's paradox," can be traced back to Thomas Digges in 1576. Since the time of Edmund Halley (1721) the riddle of a dark night sky in an infinite universe uniformly populated with stars has been regarded as a paradox. Constant emphasis on the paradoxical aspect of the problem of darkness at night, however, leads to a one-sided interpretation of the riddle. Calling the phenomenon a "paradox" distorts the historical perspective, and consequently we incorrectly attribute the origin of the riddle to Edmund Halley. Also it distorts the cosmological perspective and quite probably has greatly delayed the solution of the riddle. 相似文献
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The product of the mos proto-oncogene as a candidate "initiator" for oocyte maturation 总被引：49，自引：0，他引：49
N Sagata I Daar M Oskarsson S D Showalter G F Vande Woude 《Science (New York, N.Y.)》1989,245(4918):643-646
The endogenous c-mos product, pp39mos, is required for progesterone-induced meiotic maturation in Xenopus oocytes. Treatment of oocytes with progesterone induced a rapid increase in pp39mos that preceded both the activation of maturation promoting factor (MPF) and germinal vesicle breakdown (GVBD). Microinjection of synthetic mos RNA into oocytes activated MPF and induced GVBD in the absence of progesterone. Thus, the mos proto-oncogene product may qualify as a candidate "initiator" protein of MPF and is at least one of the "triggers" for G2 to M transition. 相似文献
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