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Journal of University of Science and Technology beijing 2004年第3期11卷 240-244页

作者： Hong zhang Jianxin Xie Zidong Wang Materials Science and Engineering school, University of Science and Technology beijing, beijing 100083, china Mat. Sci. and Eng. Sch. Univ. of Sci. and Technol. Beijing Beijing 100083 China

Pure copper rods containing continuous columnar crystals were fabricatedusing the downward CUS (Continuous Unidirectional Solidification) equipment. When the technologicalparameters were set as the ranges of mould temperature 1100-1300℃, cooling distance (the distancefrom the exit of the cast mould to the start point of cooling) 10-2. mm, casting speed 0.2.2.5 mm/s,cooling water (2.-2.℃) volume 1000-132. L/h, and when these parameters matched reasonably, the CUSprocess was performed stably, and pure copper rods containing continuous columnar crystals withbright and smooth surface were produced. The dendritic arm spacing of the crystals in copper rodsdecreased with increasing the casting speed. The results of the texture by X-ray diffractionanalysis showed that the rods has strong fiber texture.

关键词： copper continuous unidirectional solidification mould temperature castingspeed microstructure texture

Population distribution in china-characteristics,components, determinants since 1949

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Journal of Geographical sciences 1999年第2期9卷 123-134页

作者： MENG Xiang-jing JIA Shao-fen (People’s University of Chin4 beijing 100872. china, InstitUte of Geography, {2. academy of sciences, beijing 100101, china)

Rational population distribution is an important issue in china. In depth analysis on population distribution is valuable for policy making. in this paper, an attempt is made to study changes in population distributio... 详细信息

关键词： china popultion distribution characteristics components, determinants

A 2.8 Ma record of environmental evolution and tectoni events inferred from the Cuoe core in the middle of Tibetan Plateau

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Science china Earth sciences 2004年第11期47卷 1025-1034页

作者： SHEN Ji1,Lü Houyuan2.WANG Sumin1,CHEN Shiyue1,YANG Xiangdong1,WU Yanhong1 & ZHU Zhaoyu3 1.Nanjing Institute of Geography and Limnology,chinese academy of {2.,Nanjing 2.0008,china 2.Institute of Geology and Geophysics,chinese academy of {2.,beijing 10002.,china 3.Guangzhou Institute of Geochemistry,chinese academy of {2.,Guangzhou 510640,china Correspondence should be addressed to Shen Ji(email: jishen@***)

Based on a multi-proxy investigation into the deep core of the Cuoe Lake in the middle of Tibetan Plateau, a 2.8 Ma paleoclimatic and paleoenvironmental evolution is recon- structed. The result of magnetic stratum indicates that the lake basin was formed at about 2.8 MaBP, while the multi-proxy analyses of lithology, grain size, magnetic susceptibility and geo- chemical elements reveal that there have been three major environmental evolution stages and at least two intensive uplifts of the Tibetan Plateau in the lake basin area, i.e. during 2.8—2.5 MaBP, the lake basin came into being as a result of the disaggregation of the planation surface and rapid rising of the Tibetan Plateau. During 2.5—0.8 MaBP, with gradual uplift of the Tibetan Plateau, the environment of this area was more effectively controlled by the climatic cycle of the alternative glacial-interglacial stages. After 0.8 MaBP, the middle part of the Plateau accelerated its uplift and entered cryoshere.

关键词： Tibetan Plateau, 2.8 MaBP, environmental evolution, tectonic events, Cuoe Lake.

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鲸类微卫星引物对长江江豚的适用性研究

水生生物学报 2004年第6期28卷 640-646页

作者：夏军红郑劲松王丁中国科学院水生生物研究所

微卫星在长江江豚 (Neophocaenaphocaenoidesasiaeorientalis)中的应用研究还未见报道。本研究采用已发表的来自 6个鲸种的 2.3对微卫星引物对一个长江江豚群体DNA样本进行了微卫星扩增。结果表明其中有 7对引物在此群体中的扩增产物是... 详细信息

微卫星在长江江豚 (Neophocaenaphocaenoidesasiaeorientalis)中的应用研究还未见报道。本研究采用已发表的来自 6个鲸种的 2.3对微卫星引物对一个长江江豚群体DNA样本进行了微卫星扩增。结果表明其中有 7对引物在此群体中的扩增产物是稳定且多态的 ,序列分析结果表明这 7对引物的扩增产物都具有AC或GT两碱基重复单元 ,从而证明了扩增的有效性。

关键词：鲸类微卫星引物长江江豚 DNA 脱氧核糖核酸序列分析

Study on the Total Synthesis of Hainanolide (V)-Oxidation of the Tricyclic Alkenes with Singlet Oxygen

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chinese Chemical Letters 1999年第8期10卷 657-658页

作者： Xiao Ming YU Lu Yan ZHANG Shi Zhi CHEN Liang HUANG (Institute of Materia Medica, chinese academy of Medical {2. and Peking Union Medical College, beijing 100050) Institute of Materia Medica Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100050 China

Six tricyclic compounds containing C-3, C-4 double bonds were oxidized with singlet oxygen. Different regio-selectivity was found with regard to steric hinderence.

关键词： hainanolide singlet oxygen

SEDIMENTARY CHARACTERISTICS OF CONGLOMERATES IN THE JINGGU-ZHENYUAN BASIN,SOUTHWESTERN YUNNAN,china AND THEIR TECTONIC IMPLICATIONS

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Scientia Geologica Sinica 1997年第2期 10-17页

作者： Liu Shanyin( beijing Graduate school,{2. University of Mining and Technology, beijing, 100083) Zhong Dalai and Wu Genyao (Institute of Geology, chinese academy of sciences, beijing, 10002.

ＳＥＤＩＭＥＮＴＡＲＹＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＣＯＮＧＬＯＭＥＲＡＴＥＳ桑危裕龋牛剩桑危牵牵眨冢龋牛危伲眨粒危拢粒樱桑危樱希眨裕龋祝牛樱裕牛遥危伲眨危危粒危茫龋桑危粒粒危模裕龋牛桑遥裕牛茫裕希危桑茫桑... 详细信息

ＳＥＤＩＭＥＮＴＡＲＹＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＣＯＮＧＬＯＭＥＲＡＴＥＳ桑危裕龋牛剩桑危牵牵眨冢龋牛危伲眨粒危拢粒樱桑危樱希眨裕龋祝牛樱裕牛遥危伲眨危危粒危茫龋桑危粒粒危模裕龋牛桑遥裕牛茫裕希危桑茫桑停校蹋桑茫粒裕桑希危覶XＳＥＤＩＭ?..

关键词：粒粒 BASIN,SOUTHWESTERN JINGGU-ZHENYUAN 桑希危危

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苏南平原稻田灌排水系统中氮磷平衡状况

土壤学报 2008年第4期45卷 657-662页

作者：张静王德建王灿中国科学院南京土壤研究所常熟农业生态国家实验站

应用大型原状模拟土柱，对苏南平原典型稻田灌排水系统中，养分的输入输出平衡状况进行定位监测和分析。初步结果表明：稻田生态系统每季水分消耗量在890-132.mm之间。稻田能净化灌溉水中养分，不同施肥处理稻田对NH4^＋-N、NO3^--N和T... 详细信息

应用大型原状模拟土柱，对苏南平原典型稻田灌排水系统中，养分的输入输出平衡状况进行定位监测和分析。初步结果表明：稻田生态系统每季水分消耗量在890-132.mm之间。稻田能净化灌溉水中养分，不同施肥处理稻田对NH4^＋-N、NO3^--N和TP的净化量分别为10．7-12.3、6．8-9．2.-1．2.2.0kg hm^-2.稻田养分淋溶量随着施肥量的增加而增加，但养分净化量与化肥用量之间没有很好的相关性，秸秆对养分净化量的影响不明显，而猪粪明显降低了稻田养分净化量，甚至成为周围水体磷素污染源。稻田对灌溉水中的NH4^＋-N在整个水稻生长期间均起到净化作用，对NO3^--N在水稻生长初期有淋溶风险，而对TP，除了猪粪处理，稻田均呈现出净化作用。

关键词：稻田灌排水养分平衡养分净化苏南平原

Effects of aluminum on NAD kinase activity in chloroplast fraction from leaves of rice seedlings

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Journal of Environmental sciences 1995年第1期7卷 24-30页

作者： Liu Jinqi Liu Houtian(chinese Research academy of Environmental {2., beijing 100012.china)Wang Youai Wu Shuping(Department of Biology,Hebei Normal University,Shijiazhuang 050016,china)

ＥｆｆｅｃｔｏｆａｌｕｍｉｎｕｍｏｎＮＡＤｋｉｎａｓｅａｃｔｉｖｉｔｙｉｎｃｈｌｏｒｏｐｌａｓｔｆｒａｃｔｉｏｎｆｒｏｍｌｅａｖｅｓｏｆｒｉｃｅｓｅｅｄｌｉｎｇｓＬｉｕＪｉｎｑｉ；ＬｉｕＨｏｕｔｉａｎ（Ｃｈｉｎｅｓｅ... 详细信息

ＥｆｆｅｃｔｏｆａｌｕｍｉｎｕｍｏｎＮＡＤｋｉｎａｓｅａｃｔｉｖｉｔｙｉｎｃｈｌｏｒｏｐｌａｓｔｆｒａｃｔｉｏｎｆｒｏｍｌｅａｖｅｓｏｆｒｉｃｅｓｅｅｄｌｉｎｇｓＬｉｕＪｉｎｑｉ；ＬｉｕＨｏｕｔｉａｎ（ＣｈｉｎｅｓｅＲｅｓｅａｒｃｈＡｃａｄｅｍｙｏｆ...

关键词： aluminum calmodulin NAD kinase chloroplast fraction rice seedlings.

属性层次模型在国家自然科学基金项目评审中的应用

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系统工程理论与实践 2002年第11期22卷 111-116页

作者：王其冬武佩珍胡旸国家自然科学基金委员会北京100085 北京大学数学科学学院北京100871

针对国家自然科学基金项目评审的实际情况 ,设计了应用属性层次模型 (Attribute HierarchyModel,简称 AHM)评价受理项目的具体实现步骤 ,使项目的评审更加趋于公正、合理 .

关键词：属性层次模型国家自然科学基金项目评审应用层次分析法

Research on Electric Impedance Spectroscopy of Living Cell Suspensions by a Chip with Microelectrodes

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稀有金属材料与工程 2006年第S3期 429-432页

作者： Xing Yang~(1,2.3) Zhaoying Zhou~(1,2.3) Mingfei Xiao~(1,2.3) Ying Wu~(1,2.3) Shangfeng Liu~4 (1.MEMS Lab.,Department of Precision Instruments & Mechanology,Tsinghua University,beijing 100084,china) (2.Micro-Nano Technology Research Center,Tsinghua University,beijing 100084,china) (3.State Key Laboratory of Precision Measurement Technology and Instruments,Tsinghua University,beijing 100084,china) (4.school of Medicine,Tsinghua University,beijing 100084,china)

A microfabricated electrical impedance spectroscopy (EIS) chip with microelectrodes was *** substrate and the electrodes of the chip were made of glass and gold,*** experimental results demonstrated that the EIS-chip could distinguish different solutions (physiological saline,culture medium,living cell suspension etc.) by scanning from 10Hz to 45kHz.A 6-element circuit model was used for fitting the real part and the imaginary part admittance curves of the living cell *** actual circuit was also built and tested to verify the 6-element circuit model *** micro-EIS chip has several advantages including the use of small sample volumes,high resolution and ease of *** shows good application prospects in the areas of cellular electrophysioiogy,drug screening and bio-sensors etc.

关键词： electrical impedance spectroscopy(EIS) microelectrode living cell suspension 6-element