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Critical load of sulfur deposition for ecosystemand its application in china

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Journal of Environmental Sciences 1995年第3期7卷 325-337页

作者： Zhao Dianwu Zhang Xiaoshan Yang Jianxin(Research Center for Eco-Environrnental Sciences , Chinese Academy of Sceiences, beijing 1.0085,{1.)Mao Jietai(Department of Geophysics, Peking University. beijing 1.0871..{1.)Xiong Jiling(Guizhou institute o

ＣｒｉｔｉｃａｌｌｏａｄｏｆｓｕｌｆｕｒｄｅｐｏｓｉｔｉｏｎｆｏｒｅｃｏｓｙｓｔｅｍａｎｄｉｔｓａｐｐｌｉｃａｔｉｏｎｉｎＣｈｉｎａＺｈａｏＤｉａｎｗｕ；ＺｈａｎｇＸｉａｏｓｈａｎ；ＹａｎｇＪｉａｎｘｉｎ（Ｒｅｓｅａ... 详细信息

ＣｒｉｔｉｃａｌｌｏａｄｏｆｓｕｌｆｕｒｄｅｐｏｓｉｔｉｏｎｆｏｒｅｃｏｓｙｓｔｅｍａｎｄｉｔｓａｐｐｌｉｃａｔｉｏｎｉｎＣｈｉｎａＺｈａｏＤｉａｎｗｕ；ＺｈａｎｇＸｉａｏｓｈａｎ；ＹａｎｇＪｉａｎｘｉｎ（ＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏ－Ｅ...

关键词： sulfur deposition critical load : ecosystem.

Study on Metabolites and Mutation of Benzo[k]fluoranthene by Peroxynitrite/Fe（Ⅲ）porphyrin Biomimetic System

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Study on Metabolites and Mutation of Benzo[k]fluoranthene by...

2.1.0}环境污染与大众健康学术会议

作者： Shaohui Li 1., Yunjing Luo 1., Shufen Zhang 1., Yuanbin She 2., Rugang Zhong 1.1.College of Life Science and Bioengineering, {1. University of Technology, {1., 1.01.0},{2. 2.College of Environmental and Energy Engineering, {1. University of Technology, {1., 1.01.0},{2.

The metabolites of benzo[k]fluoranthene under the peroxynitrite /T（p-Cl）PPFeCl （peroxynitrite/（chloride）iron（III）tetrakis （p-chlorophenyl）porphyrin） system have been identified with HPLC-MS. The results showed that benzo[k]fluoranthene was activated to form two new metabolites induced by PN/p-ClFeTPPCl system, which were OH group, and nitro group. In the Ames test, admixture of benzo[k]fluoranthene metabolites showed significantly high mutagenicity while benzo[k]fluoranthene parent did not show positive result during the test.

关键词： PAHs benzo[k]fluoranthene PN/p-ClFeTPPCl Ames test

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大足鼠耳蝠的分布

四川动物 2003年第3期22卷 155-156页

作者：马杰戴强张树义沈钧贤梁冰中国科学院动物研究所北京100080 中国科学院生物物理研究所视觉信息加工重点实验室

首次报道北京、成都和广东发现大足鼠耳蝠。

关键词：大足鼠耳蝠分布种群形态特征翼手目

MEASUREMENT OF K_(IC)OF MEDIAN OR LOW STRENGTH STEEL USING ROUND BARS WITH CIRCUMFERENCIAL CRACK

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Acta Metallurgica Sinica(English Letters) 1989年第3期2卷 201-207页

作者： LIU Zaihua Huazhong University of Science and Technology,Wuhan,china ZHAO Dongli Bureau of Complete Sets of Equipment,State Machinery Commission,{1.,china Dept.of mechanics,Huazhong University of Science and Technology,Yujiashan,Wuhan,china

The size effect of tension round bars with circumferential crack was described and used to measure the plane-strain fracture toughness K_(1.) of median or low strength *** size of cylindrical specimen required for K_(1.) measurement is much smaller than that of standard *** J-integral values of the cylindrical sqecimens were calculated to characterize the size *** finite element calculution and fracture morphology analysis have been conducted to eyplain the fact that smaller cylindrical specimen could be used to measure K_(1.) of median or low strength steel.

关键词： median or low strength steel fracture touglmess round bar specimen

Nitrous Oxide Emission from Boreal Peatland in the Continuous Permafrost Zone,Northeast china

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Nitrous Oxide Emission from Boreal Peatland in the Continuou...

虚构与真实之间——就家谱和族群认同问题与《福建族谱》作者商榷

2.1. International Symposium on Water Resource and Environmental Protection(ISWREP 2.1.)

作者： Miao Yuqing 1.2.Song Changchun 1.Wang Xianwei 1.Sun Li 1.1.Key Laboratory of Wetland Ecology and Environment Northeast {1. of Geography and Agroecology CAS Changchun {1. 2.Graduate University Chinese Academy of Sciences {2. {1.

In the present study, we measured ecosystem N2. fluxes weekly using manual chambers from June to September 2.1. in a permafrost peatland in Northeast china. The fluxes were generally low, ranging from -2..9 to 2..6 μg m -2.h -1.（negative flux indicating uptake of N2. from the atmosphere into the soil） and showed large temporal variation with no clear pattern. The mean N2. flux during the observation period was -3.9 μg m -2.h -1.. In addition, N2. fluxes negatively correlated with the thawing depth, and had no correlation with soil temperature, moisture and water table. Our result indicates that, in Northeast china, boreal peatlands act as a N2. sink in the snow-free season. This would provide a negative feedback to climate warming in the boreal regions in the future. Due to short observation of N2. flux, more studies should be conducted to investigate annual fluxes and the factors which controlled the N2. fluxes.

关键词： N2. flux peatland permafrost global warming thaw depth

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中南民族学院学报(人文社会科学版) 2001年第1期21卷 44-47页

作者：胡鸿保定宜庄中国人民大学社会学系!北京1.0872 中国社会科学院历史研究所!北京1.0732

家谱或族谱历来是历史学家分析的重要对象。民族学家认为 ,这些谱牒对于族群认同具有特殊的现实意义。本文作者根据自己的经验对福建少数民族某些族群的认同问题提出与其他学者不同的看法 ,指出 :应该重视族群认同的层次性 ,全面地理解... 详细信息

家谱或族谱历来是历史学家分析的重要对象。民族学家认为 ,这些谱牒对于族群认同具有特殊的现实意义。本文作者根据自己的经验对福建少数民族某些族群的认同问题提出与其他学者不同的看法 ,指出 :应该重视族群认同的层次性 ,全面地理解所谓虚构谱牒的真实社会人类学意义

关键词：族谱族群认同,福建少数民族

Sperm-induced Ca^(2.) oscillations in mouse maturing oocytes and postovulatory ageing eggs

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Chinese Science Bulletin 1997年第5期42卷 430-433页

作者： DENG Manqi, XIN Jian, HUANG Xiuying and SUN FangzhenLaboratory of Molecular Developmental Biology, institute of Developmental Biology, Chinese Academy of Sciences, {1.{2.,china Laboratory of Molecular Developmental Biology Institute of Developmental Biology Chinese Academy of Sciences Beijing China

MOST mammalian oocytes are arrested at the metaphase of second meiotic division （MⅡ） after maturation. The intracellular calcium ([Ca2.]i) in MⅡ eggs rises repetitively from basal level of 40—1.0 nmol/L to peak level of 1.00 nmol/L, which is termed Ca2. oscillation. It is established that [Ca2.]1./sub> increase is the primary signal responsible for the resumption of second meiotic division. Previous investigations largely focused on the fertilization-induced [Ca2.]i

关键词： mouse oocyte aged egg fertilization Ca2. oscillation.

Geochemical anomalies of hydrothermal plume at EPR 1.°N

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Science china Earth Sciences 2007年第9期50卷 1433-1440页

作者： WANG XiaoYuan1.2. ZENG ZhiGang1. LIU ChangHua1.2. YIN XueBo1. YU ShaoXiong1.2. YUAN ChunWei1.2. ZHANG GuoLiang1.2.& WANG XiaoMei1.2.1.Key Laboratory of Marine Geology and Environment, institute of Oceanology, Chinese Acadamy of Sciences, Qingdao 2.6071.{1. 2.Graduate School of the Chinese Acadamy of Sciences, {2. 1.0049,{1. Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Acadamy of Sciences Qingdao 266071 China Graduate School of the Chinese Acadamy of Sciences Beijing 100049 China Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Acadamy of Sciences Qingdao 266071 China

During the DY1.5-1.0} 1.cruise (R/V DAYANG YIHAO, November 2.03) on East Pacific Rise (EPR) 1.0}1.°N, the submarine hydrothermal activity was investigated and the CTD hydrocast was carried out at EPR1.0}39''N—1.0}54''N. From the temperature anomalies and the concentrations of magnesium, chlorine, bromine in seawater samples, we discover that magnesium depletes 9.3%—2..4%, chlorine and bromine enrich 1..3%—2..7% and 1..7%—2..0% respectively relative to normal seawater at the stations which have chemistry anomalies, moreover temperature and chemistry anomalies are at the same layer. The depletion of magnesium in the plume may be caused by a fluid lacking of magnesium which rises after the hydrothermal fluid reaches the equilibrium with ambient seawater, the enrichment of chlorine and bromine might be the result of inputting later brine which is generated by phase separation due to hydrothermal activity. In addition, the Br/CI ratio in the abnormal layers at the survey area is identical to that in seawater, which implies that halite dissolution (or precipitation) occurs neither when the fluid is vented nor when hydrothermal fluid entraining ambient seawater rises to form plume. From the abnormal instance at E55 station, it is very possible that there might exist a new hydrothermal vent site.

关键词： submarine hydrothermal activity, plume, hydrothermal fluid, EPR

青岛文昌鱼硫氧还蛋白基因的克隆及同源性分析

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山东大学学报（理学版） 2003年第1期38卷 103-105,109页

作者：黄向炜陈忠科童维王雪飞王新淮张红卫山东大学生命科学学院发育研究所济南250100 中国科学院北京华大基因研究中心北京1001300

通过对文昌鱼神经胚cDNA文库进行测序 ,获得含文昌鱼硫氧还蛋白基因全部读框的cDNA序列 ,并演绎出对应的氨基酸序列 ,对其可编码蛋白进行了分析预测 ,还与多种脊椎动物和无脊椎动物中同种蛋白的同源性进行比较分析 .发现该蛋白具有典型... 详细信息

通过对文昌鱼神经胚cDNA文库进行测序 ,获得含文昌鱼硫氧还蛋白基因全部读框的cDNA序列 ,并演绎出对应的氨基酸序列 ,对其可编码蛋白进行了分析预测 ,还与多种脊椎动物和无脊椎动物中同种蛋白的同源性进行比较分析 .发现该蛋白具有典型的硫氧还蛋白活性部位 ,与脊椎动物硫氧还蛋白的同源性大于无脊椎动物 ,说明作为脊椎动物和无脊椎动物之间典型的过渡类型 ,文昌鱼在进化上更接近于脊椎动物 .

关键词：文昌鱼硫氧还蛋白基因进化