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《环境科学学报(英文版)》1990,2(2):128-128
The participants in the Symposium on Environmental Protection and Ecology in Develo-ping Countries, cosponsored by the Chinese Academy of Sciences (CAS) and the Federation of Asian Scientific Academies & Societies (FASAS), held in Beijing, China, on 1-4 November 1989. 相似文献
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Liu Jingyi 《环境科学学报(英文版)》1990,2(2):55-56
The symposium on Environmental Protection and Ecology in Developing Countries, orga-nized and financed by Chinese Academy of Sciences (CAS) and Federation of Asian Scientific Academics and Societies (FASTS) and supported by American Association for the Advance-ment of Science (AAAS) and the UNEP Regional representative has held on November 2-4 in Beijing, China. 相似文献
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《石油的终结:在一个危险新世界的边缘》 The End of Oil:On the Edge of a Perilous New World 作者:保罗·罗伯茨(Paul Roberts) 出版社:霍顿·弥福林(Houghton Mifflin)出版公司出版时间:2004年5月15日出版自从那些被称作资本主义的国家以工业革命为基础,推动了真正意义上的商品全球化以来, 就有这样一些特殊的物品,比如棉花和石油,在该过程中起着巨大的作用,甚至将之形容为翻天覆地也不为过。试想一下,假如没有棉花,我们的时装业和服饰文化将会如何?而倘使石油突然 相似文献
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The salt-secreting mangrove, Avicennia marina, and non-salt-secreting mangrove, Kande/ia candel were cultivated in sand with various salinities(0‰, 100‰, 20‰, 30‰, 40‰) for 60 d. Plasma membrane vesicles of highpurity in leaves and roots of A. marina and K. candel seedlings were obtained by two-phase partitioning. The function of the plasma membranes, the activity of ATPase, membrane potential and transmembrane proton gradient, at various salinities were investigated. The results showed that within a certain range of salinity( A. marina and roots of K. candel: 0-30‰; leaves of K. candel: 0-20‰), the activity of ATPase increased with increasing salinity, while high salinity (above 30‰ or 20‰) inhibited ATPase activity. In comparison with A. marina, K.candel appeared to be more sensitive to salinity. The dynamics of membrane potential and transmembrane proton gradient in leaves and roots of A. marina and K. candel seedlings were similar to that of ATPase. When treated directly by NaCl all the indexes were inhibited markedly: there was a little increase within 0-10‰( K. candel) or 0-20‰( A. marina) followed by sharp declining. It indicated that the structure and function of plasma membrane was damaged severely. 相似文献
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食品废物是人们生活垃圾的主要组成部分。由于其营养成分较高且较难处理等特点,近年来受到人们越来越多的关注。为了深入了解食品废物研究的全球状况和前沿动态,比较客观地反映相关国家及机构在该领域的科学能力和科学影响,采用ISI Web of Knowledge的Web of Science引文数据库,选用普通检索方式,以食品废物作为主题检索词,对1999-2010年之间该库收录的相关文献进行了计量分析。结果表明:统计时间范围内,美国发文量居榜首,中国的发文量增长最快。研究机构中,西班牙国家研究委员会发文量位列第一。Chemistry(化学)、Food Science and Technology(食品科学与技术)、Environmental Sciences and Ecology(环境科学与生态学)是食品废物发文量最多的主流领域。《Journal of Agricultural and Food Chemistry》是发文量最多的学术期刊。此外,通过对关键词的分析,指出了有关食品废物的热点处理方法及其发文量的趋势。 相似文献