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    题名 作者 年代 出处 被引量
1活性氧化铝除氟研究显示文摘针对目前活性氧化铝饮水除氟中存在的问题,进行了生产性试验研究,通过采用原水投加CO_2气体降低pH值、小颗粒活性氧化铝、大流量短历时的NaOH循环再生法等新技术,提高了活性氧化铝的吸附容量和处理水的能力,克服滤料板结和假疲劳,除氟效果稳定可靠,水质好,再生时间短,用药省,降低了基建投资和运转费用。North China Municipal Engineering Design Institute A full-scale plant was set up for studying the existing problems on the fluoride removal from drinking water by activated alumina. Some new methods was adopted,such as the addition of CO2to reduce water pH value,the use of small-sized activated alumina,and the employment of a cyclic regeneration at large flow rate with NaOH as regenerant,which result in the improvement of adsorption capacity of activated alumina and treatment capacity, the elimination of the hardening of filtration materials and false fatigue,stable and reliable effectiveness,good quality in water,short regeneration time,small consumption of regenerant. And then the capital and openational costs were reduced. 1989中国给水排水1989,5,3:5
2The Cosmic Dust in Suzhou Granite:Ablated Products of a Cometary ExplosionHu Zhong-wei,Wang Er-kang,Wan Yu-qiuDepartement of Astronomy,Nanjing University,Nanjing 210093,China Department of Earth Sdence,Nanjing University,Nanjing 210093,China Cosmic dust has been collected in large number from deap-sea sediments,Greenland ice deposits,the stratosphere and space,of cosmic dust,some are the unmelted micrometeorite,and most are the ablated products of me-teoroids in the atmosphere.Cosmic dusts were recovered from two sites of the 1908 Tunguska explosion and the 1965 Revelstoks explosion Since 1987,a large number of microspherules have been extracted from Suzhou granite of China Their suface and section structures,mineral and chemical composition show that these microspherules are of the ablated cosmic dust.The microspherules occurred in the inner contact complex intrusion.It suggests that the microspherules may be products of the same event and were aggergated in some strata and then captured by the emplacement of granitic magma.Although the microspherules are similare to other ablated cosmic dusts,there are some diferences.Our calculated results of cometary motion through the atmosphere and explosion show that the microspherules may be the ablated dust of a comet with mass above 1015g at its explosion near the ground. 1996紫金山天文台台刊1996,15,3:2
315显示文摘Assessment of metastatic disease status at death in 435 patients with large choroidal melanoma in the Collaborative Ocular Melanoma Study (COMS): COMS report no 2001Arch Ophthalmol2001,119,5:1
4Sino-U.S.Comparisons of Soft Power显示文摘This article proposes a method for measuring soft power. Overall,it is estimated that China has roughly a third of America's power in this respect.Three factors constitute the soft power of a country:its international appeal,its external and its internal mobilization capabilities. In the short term,China cannot hope to catch up in international appeal and needs to find a balanced way to develop both hard and soft power.It needs to set policy guidelines based on equality and justice,enhance its capabilities for rallying both external and domestic support,and concentrate on improving its social credibility and international strategic reputation.In doing so,it is hoped that China will be able to narrow the gap in these areas within four to five years.Yan Xuetong Professor and Director of the Institute of International Studies,Tsinghua University.Professor Yan’s research interests include international security affairs. Xu Jin Ph.D candidate at the Institute of International Studies,Tsinghua University.He largely studies international security affairs. Ma Zongshi 2008Contemporary International Relations2008,18,2:1
5The influence of climate, hy- drology and permafrost on Holocene peat accumulation at 3500 m on the eastern Qinghai Tibetan Plateau 显示文摘Large D J Spiro B Fen'at M 2009Quaternary Science Reviews2009,28,:1
6Seasonal variation in mussel Mytilus edulis digestive gland cytochrome P4501A- and 2E-immunoidentified protein levels and DNA strand breaks(Comet assay)显示文摘Shaw JP Large AT Chipman JK 2000Mar Environ Res2000,50,15:1
7which testosterone replacement therapy显示文摘Cantrill JA Dewis P Large DM et at 1984Clin Endocrinol1984,21,:1
8我与自己显示文摘一边'玩乐',一边'钻研',这种非常规的学习方法,在英国Halifax城的Eureka!博物馆中得以实现。这里有一间专为孩子们准备的展廊,与传统博物馆的展陈方式大相径庭。它告别了严肃庄重的氛围,变得活泼,易于互动。At Large Museum Exhibition Designers 赵雨思 HI-MACS Philip Vile 2013缤纷2013,0,10:0
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