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检索条件"作者=2.Institute of Zoology,the Chinese Academy of Sciences,Beijing 100101,china"
82993 条 记 录,以下是41-50 订阅
排序:
Tree ring analysis for determination of pollution history of Chengde City,north china
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Journal of Environmental sciences 1996年 第1期8卷 77-85页
作者: Jiang Gaoming(institute of Botany, chinese academy of sciences,beijing 100044,china ) Inst Botany Chinese Acad of Sci Beijing China China
Air pollution history of sulphur and heavy metals since 1800 in Chengde City , north china,was studied by analyzing the concentrations of sulphur and heavy metals in growth rings of Pinus tabulaeformis Carr. Sulphur c... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Enhancement of intramolecular excimer formation and photodimerization of anthrylmethyl α,ω-alkanedioates via hydrophobic interactions
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chinese Journal of Chemistry 1995年 第6期13卷 532-538页
作者: TUNG,Chcn-Ho LI,Yiinstitute of Photographic Chemistry,chinese academy of sciences,beijing 100101,china institute of Photographic Chemistry Chinese Academy of Sciences Beijing 100101 China
The fluorescence spectra and photodimerization of anthrylmethyl a,w-alkanedioates (A-Mn-A) both in organic and in aqueous organic mixed solvents have been *** aqueous organic mixed solvents strong intramolecular excim... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Strong decays of N~*(1535) in an extended chiral quark model
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Science china(Physics,Mechanics & Astronomy) 2009年 第10期52卷 1452-1457页
作者: AN ChunSheng1,2,3 & ZOU BingSong1,2,3 1 institute of High Energy Physics,chinese academy of sciences,beijing 100049,china 2 Theoretical Physics Center for Science Facilities,chinese academy of sciences,beijing 100049,china 3 Graduate University of chinese academy of sciences,beijing 100049,china institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Theoretical Physics Center for Science Facilities Chinese Academy of Sciences Beijing 100049 China Graduate University of chinese academy of sciences Beijing 100049 China
The strong decays of the N*(1535) resonance are investigated in an extended chiral quark model by including the low-lying $ qqqq\bar q $ components in addition to the qqq component. The results show that these five-qu... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
N DIMENSIONAL FINITE WAVELET FILTERS
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Journal of Computational Mathematics 2003年 第5期21卷 595-602页
作者: Si-long Peng (NADEC, institute of Automation, chinese academy of sciences, beijing 100080, china) NADEC Institute of Automation Chinese Academy of Sciences 北京 100080
In this paper, a large class of n dimensional orthogonal and biorthognal wavelet filters (lowpass and highpass) are presented in explicit expression. We also characterize orthogonal filters with linear phase in this c... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Transformations and non-degenerate maps
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Science china Mathematics 2005年 第z1期48卷 195-205页
作者: LI Baokui & WANG Yuefei institute of Mathematics, academy of Mathematics and System sciences, chinese academy of sciences, beijing 100080, china Graduate School, chinese academy of sciences, beijing 100080, china 1. institute of Mathematics Academy of Mathematics and System Sciences Chinese Academy of Sciences 100080 Beijing China 2. Graduate School Chinese Academy of Sciences 100080 Beijing China
We shall prove the equivalences of a non-degenerate circle-preserving map and a M(o)bius transformation in ^Rn, of a non-degenerate geodesic-preserving map and an isometry in Hn of a non-degenerate line-preserving map... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Potential land for plantation of Jatropha curcas as feedstocks for biodiesel in china
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Science china Earth sciences 2010年 第1期53卷 120-127页
作者: WU WeiGuang 1,2,3,HUANG JiKun 1,3 & DENG XiangZheng 1,3 1 institute of Geographic sciences and Natural Resources Research,chinese academy of sciences,beijing 100101,china 2 Department of Economics and Management,Zhejiang Forestry University,Linan 311300,china 3 Center for chinese Agricultural Policy,chinese academy of sciences,beijing 100101,china 1. institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China2. Department of Economics and Management Zhejiang Forestry University Linan 311300 China3. Center for Chinese Agricultural Policy Chinese Academy of Sciences Beijing 100101 China
As a renewable energy,biofuel has attracted great attention in china and the rest of *** with the national food security,china recently has shifted its biofuel development priority from grain-based to non-grain-based ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Formation of Ultrafine Metal Particles and Metal Oxide Precursor on Anodized Al by Electrolysis Deposition
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Journal of Materials Science & Technology 2000年 第1期16卷 50-54页
作者: Lingchuan LI (institute of Chemical Metallurgy, chinese academy of sciences, beijing 100080, china) institute of Chemical Metallurgy Chinese Academy of Sciences Beijing 100080 China
Nickel was deposited by ac electrolysis deposition in the pores of the porous oxide film of Al produced by anodizing in phosphoric acid. Ultrafine rod-shaped Ni particles were formed in the pores. At the same time a f... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
PROBABILISTIC NUMERICAL APPROACH FOR PDE AND ITS APPLICATION IN THE VALUATION OF EUROPEAN OPTIONS
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Journal of Computational Mathematics 2001年 第6期19卷 591-600页
作者: Dong-sheng Wu (institute of Systems Science, academy of Mathematics and Systems sciences, chinese academy of sciences, beijing 100080, china ) 中科院系统科学所 北京 100080
Presents a probabilistic numerical approach for a class of probabilistic differential equation. Application of the Brownian motion and Monte-Carlo method; Application in the valuation of European Options.
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Effects of the Biot and the squirt-flow coupling interaction on anisotropic elastic waves
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chinese Science Bulletin 2000年 第23期45卷 2130-2138页
作者: YANG Dinghui & ZHANG Zhongjie Department of Mathematical sciences, Tsinghua University, beijing 100084, china institute of Geophysics, chinese academy of sciences, beijing 100101, china Department of Mathematical sciences Tsinghua University Beijing China institute of Geophysics Chinese Academy of Sciences Beijing China
Considering the velocity anisotropy of the solid/fluid relative motion and employment of the BISQ theory based on the one-dimensional porous isotropic case, we establish a two-phase anisotropic elastic wave equation t... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Regional differences and determinants of built-up area expansion in china
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Science china Earth sciences 2007年 第12期50卷 1835-1843页
作者: HUANG JiKun1,2,ZHU LiFen3,1 & DENG XiangZheng1,2 1 Center for chinese Agricultural Policy,chinese academy of sciences,beijing 100101,china 2.institute of Geographic sciences and Natural Resources Research,chinese academy of sciences,beijing 100101,china 3 Research Center of the Economy of the Upper Reaches of the Yangtze River,Chongqing Technology and Business University,Chongqing 400067,china 1. Center for chinese Agricultural Policy Chinese Academy of Sciences Beijing 100101 China 2. institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China 3. Research Center of the Economy of the Upper Reaches of the Yangtze River Chongqing Technology and Business University Chongqing 400067 China
Based on remote sensing data on land use provided by the chinese academy of sciences and socio-economic data collected by the authors,this paper analyzes the trends and regional differences in built-up area(BUA) expan... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论