共查询到20条相似文献,搜索用时 15 毫秒
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Adolph Ott 《Journal of The Franklin Institute》1870,90(3):210-213
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Adolph Ott 《Journal of The Franklin Institute》1870,90(4):282-285
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石铸 《中国科学院研究生院学报》1981,19(3):318-322
This paper is the documentation of specimens and literature reffered to Atracty-
lodes lancea (Thunb.) DC. etc. As a result, it is found that, in taxonomy of the genus
Atractylodes, what represcents by four long-established names, i. e. Atractylodes lancea
(Thunb.) DC., A. ovata (Thunb.) DC., A. chinensis (Bunge) Koidz. and A. lyrata
Sieb. et Zucc., in fact, is the one and same species. According to the law of priority in
nomenclature, the first name should be given to Chinese drug “Cangzhu”, while theother three names have to be treated as its synonyms. 相似文献
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The stability of stochastic chemical system is considered. The definitions of almost sure stability and mean square stability and the corresponding stability theorems are presented and discussed. Examples concerning the stability of a two tank water heating system and a well-stirred reactor tank with random flows are studied in detail. 相似文献
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Hermann Schildknecht 《Endeavour》1984,8(3):113-117
It is a matter of common experience that certain plants react by movement—often surprisingly rapid—to physical stimuli. These movements are the result of turgor changes in the cells concerned and these are triggered by chemical messengers known as turgorins. This article reviews recent developments in this field and shows that these highly active plant hormones have relatively simple structures. 相似文献
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通过对单子叶植物和毛茛科以及”睡莲目”植物中生物碱、甾体化合物、三萜化合物、氰甙
和脂肪酸等五类化学成份的比较分析,作者认为毛茛科与百合目有着密切的亲缘关系,因而支
持单子叶植物毛茛—百合起源的主张,不赞同苏联学者Takhtajan关于单子叶植物莼菜—泽泻起源的观点。 相似文献