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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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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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论组织理论的新范式   总被引:4,自引:0,他引:4       下载免费PDF全文
罗珉 《科研管理》2006,27(2):145-152
本文认为,组织理论新范式的出现,开始了关于组织的话语、组织的建构与批判,以及组织范式自身变革的对话。更重要的是,组织理论范式的论战,显示了组织发展的新话语、新思维,加快了组织理论新范式的传播。  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   

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