共查询到20条相似文献,搜索用时 15 毫秒
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"蛋白质"是一个常用词,但经常和另一个只有一字之差的称谓"蛋白"相混淆,使用极不规范。本文对此现象进行分析并提出意见,希望有助于科技名词使用的规范化。 相似文献
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一九八○年十一月四日,成都动物园饲养了一年多的一对大熊猫“宝宝”和“天天”带着我国人民对西德人民的友谊,告别了蓉城到西德最大的城市西柏林去落户。由成都到西柏林,飞机要飞行二十二个小时,到法兰克福机场时是西德时间上午十点多,因为要转机,“天天”和“宝宝”在这里下了飞机。尽管那天法兰克福的天气很冷,寒风劲吹,雪花飞扬,一大批新闻记者冒着严寒在机场等候,“宝宝”、“天天”一出机舱,记者们的摄影机、电视录象机、电影拍摄机的镜头蜂拥而上,都以先拍为快。由法兰克福到西柏林是由一架美国军用飞机专程运送,当这架飞机到达西柏… 相似文献
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Those standard historiographic themes of evolution and revolution need replacing. They perpetuate mid-Victorian scientists history of science. Historians history of science does well to take in the long run from the Greek and Hebrew heritages on, and to work at avoiding misleading anachronism and teleology. As an alternative to the usual evo-revo themes, a historiography of origins and species, of cosmologies (including microcosmogonies and macrocosmogonies) and ontologies, is developed here. The advantages of such a historiography are illustrated by looking briefly at a number of transitions the transition from Greek and Hebrew doctrines to their integrations by medieval authors; the transition from the Platonist, Aristotelian, Christian Aquinas to the Newtonian Buffon and to the no less Newtonian Lamarck; the departures the early Darwin made away from Lamarcks and from Lyells views. Issues concerning historical thinking about nature, concerning essentialism and concerning classification are addressed in an attempt to challenge customary stereotypes. Questions about originality and influence are raised, especially concerning Darwins tree of life scheme. The broader historiography of Darwinian science as a social ideology, and as a worldview, is examined and the scope for revisions emphasised. Throughout, graduate students are encouraged to see this topic area not as worked out, but as full of opportunities for fresh contributions. 相似文献
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W. McDougall 《BMJ (Clinical research ed.)》1908,2(2496):1405-1405
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E. A. Minchin 《BMJ (Clinical research ed.)》1911,2(2658):1572-1573
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临川县上顿渡公社种有甘蔗7500多亩,因蔗螟为害的枯心苗平均达5%,严重的达18%。据农民经验早期若不防治,将来可达50%—60%。现在社员采取下列措施及早防治。 捉 看到枯心苗或叶缘焦黄枯萎症状的茎部就找虫孔,在虫孔处把茎破开,宁愿牺牲一株被害蔗苗,捕杀一只虫,就等于将来杀死几百只虫。 扦 手执扦虫针(用一尺多长的小铁丝,一端磨尖,或锤尖磨光)先向被害茎的虫孔里横插几下,再从上而下直插人茎杆中心,上下循回扦插几次,虫就杀死在茎中。一般插至虫孔下1—2寸深处,虫就可以杀死的,有时也要深扦些。被扦插的甘蔗虽然残废(若不扦杀虫这株还会死的),但还能保持了生活力,可以从茎基部分蘖再长出新蔗来。 相似文献
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最近有些书刊和博物馆的陈列在谈人类起源时,常常把“猿人”(例如“北京猿人”)叫做“直立人”,这是怎么回事呢?这里作一简单介绍:“猿人”的概念最早是谁提出的? 早在1873年,德国的进化论者海克尔在讨论灵长类的进化谱系时,认为在“本来意义上”的人出现之前的那一阶段,是“没有语言的原始人”。1889年他研究了25年前发现的尼安德特人(一种化石人类)后,进一步提出一条人类发展的进化线,认为现代人即“智人”, 相似文献