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GEOCHEMISTRY OF EARLY PRECAMBRIAN K-GRANITE IN THE TIANZHEN-HUAI'AN AREA AND ITS TECTONIC SIGNIFICANCE

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Scientia Geologica Sinica 2000年第2期 181-193页

作者： Li Yonggang Guo Jinghui and Zhai Mingguo (institute of Geology and Geophysics, chinese academy of sciences {2. 10002.)

To the south of Archaean Huai'an Complex along the frontier of Shanxi, Inner Mongolia and Hebei, the granite belt separated with Archaean Huai'an Complex by high-pressure granulite complex is an individual petrotectonic unit more than 2. km in the width. The granite belt extends intermittently about 2.0 km from the south of Tianzhen to Xigeyu and Erdaolin of Xuanhua. The extensional direction is consistent with that of regional gneissosity and major stuctural line. The granite belt consists of some middle-small scale of granite bodies and relict bodies. Most of them are characterized by red-colored potassic granites and high-Pressure granulite inclusions. The mineral assemblage of Qz+Per+P1± Gt+Bi ±Hb (brown)+Mt and the compositions of garnet and biotite in some of granite bodies indicate that they underwent granulitic facies metamorphism. The compositions of most of granites are close to subsolvus granites and show the evolutional tendency of calc-alkaline series. The geochendcal featues of granites show that they are rich in K, Rb and Ba, and poor in Zr, Y and Yb, and some samPles is also deplete in Th, Ta and Nb. Granites formed by the melting of different types of source rocks and have similar geochemical features with collisional granite. Their zircon U-Pb data yield a uniform age of 2.2.OMa,which indicates they formed in Archaean

关键词： FeO high ITS GEOCHEMISTRY OF EARLY PRECAMBRIAN K-GRANITE IN THE TIANZHEN-HUAI’AN AREA AND ITS TECTONIC SIGNIFICANCE Ta

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降雨径流对大理河流域系统泥沙输移比的影响

水土保持学报 2000年第Z1期14卷 19-27页

作者：陈浩中国科学院地理研究所北京100101

根据大理河流域水文测验资料 ,探讨了黄土丘陵沟壑区流域系统泥沙输移比的年际与次降雨时空变化特征和次降雨径流对泥沙输移比的影响及影响次降雨泥沙输移比的暴雨洪水能量转换机制。研究表明 ,从长远来看流域系统的侵蚀与产沙基本可以... 详细信息

根据大理河流域水文测验资料 ,探讨了黄土丘陵沟壑区流域系统泥沙输移比的年际与次降雨时空变化特征和次降雨径流对泥沙输移比的影响及影响次降雨泥沙输移比的暴雨洪水能量转换机制。研究表明 ,从长远来看流域系统的侵蚀与产沙基本可以达到平衡。但是 ,次降雨或分年度泥沙输移比有相当大的变幅 ,在短期内会经常存在泥沙的滞留和滞留的泥沙被重新侵蚀搬运而出现泥沙输移比小于 1和大于 1的情况。短期内流域系统中经常会处于侵蚀、输移、滞留及沉积的循环之中 ,这主要与降雨的时空分布和洪峰增减幅度及径流深度增减幅度密切相关。利用次降雨径流深度增幅比和洪峰增幅比不仅可以表征单位面积水流与沟道系统洪峰能量变化时对泥沙输移比的影响 ,并且具有极高的预报精度。

关键词：泥沙输移比降雨径流动力机制流域系统黄土丘陵沟壑区

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COLD WINTER EVENTS RECORDED IN HISTORICAL DOCUMENTS OF THE TROPICAL AREA, CHINA

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Scientia Geologica Sinica 2001年第3期 205-210页

作者： Rui Chen, Guoqiang Chu and Jiaqi Liu institute of Geology and Geophysics, chinese academy of sciences, {2. 10002.

Historical documents to record cold winter events of the tropical area, such as snowfall, freeze and frost, are convincible evidence of the Little Ice Age (LIA). Cold winter events recorded in historical documents such as local chronicles of areas (tropical areas) to the south of the Tropical of Cancer, China provide such evidence. The statistic data of the past several centuries, such as the year number of cold winter per decade, the index of cold winter and the number of county with cold winter records per decade suggest that the colder winter in the tropical areas of China was concentrated in four periods: 13.0-143. A D, 1480-1550 A D, 162.-1770 A D and 183.-1900 A D. The LIA influenced the climate of the tropical areas of China. However, temperature of the LIA was not lower always, but there was a series of alternative warm and cold times.

关键词： CHINA COLD WINTER EVENTS RECORDED IN HISTORICAL DOCUMENTS OF THE TROPICAL AREA LIA WCRP

Middle Jurassic Palaeoclimatic Conditions as Inferred by the Diverse Fossil Wood Floras in Beipiao,Western Liaoning,China

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地学前缘 2009年第S1期16卷 259-259页

作者： Zikun Jiang~(1,2.,Yongdong Wang~1,Ning Tian~2.1.Nanjing institute of Geology and Paleontology,chinese {2. of {3.,Nanjing 2.0008,China. 2.Graduate School of chinese academy of sciences,beijing 100049,China

The Middle Jurassic system is well developed and exposed in western Liaoning Province including two formations,the Tiaojishan Formation and the Haifanggou *** Tiaojishan Formation is represented by intermediate extrusive and pyroclastic rocks,with intercalations of basic volcanic and sedimentary *** silicified wood specimens were recovered from this formation in Lamaying,

关键词： fossil wood palaeoclimate Middle Jurassic Tiaojishan Formation western Liaoning

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A Conservative System for the Nonlinear String with Input-Output on Boundary

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A Conservative System for the Nonlinear String with Input-Ou...

第二十二届中国控制会议

作者： Yao Pengfei institute of Systems Science academy of Mathematics and Systems {2.{3. beijing 100080

＜正＞We construct a conservative structure with the input and output at the boundary for the nonlinear string which ensures us to have global smooth solutions to the quasilinear hyperbolic system once the initial dat... 详细信息

关键词： AMS(MOS) subject classifications 49B 49E

The Signature of the Antarctic Oscillation in the Northern Hemisphere Troposphere

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The Signature of the Antarctic Oscillation in the Northern H...

中国气象学会2.06年年会“气候变化及其机理和模拟”分会场

作者： Jie Song 1, 2.* Wen Zhou1 Jing Pan1 Chongyin Li 1 1 LASG, institute of Atmospheric Physics, chinese {2. of Science, {3., China 10002. 2.Graduate School of the chinese {2. of Science, {3., China 100039

This paper investigates the signature of the Antarctic Oscillation (AAO) in the northern hemisphere troposphere. It is found that during boreal winter, positive (negative) phase of the AAO can lead to

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EVALUATION OF ROCK SLOPE STABILITY IN TERMS OF TWO INDICES,RMII AND PR

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Scientia Geologica Sinica 1998年第2期 38-39+41-47页

作者： Shang Yanjun and Yang Zhifa Engineering Geomechanics Laboratory, institute of Geology, chinese academy of sciences, {2. 10002.

１．ＩｎｔｒｏｄｕｃｔｉｏｎＡｓｏｎｅｋｅｙｃｈａｉｎｆｏｒａｓｅｓｉｎｇｓｌｏｐｅｓｔａｂｉｌｉｔｙ，ｔｈｅａｎａｌｙｓｉｓｏｆｅｎｇｉｎｅｅｒｉｎｇｇｅｏｌｏｇｉｃａｌｓｉｔｕａｔｉｏｎｓｈａｓａｔｒａｃｔｅｄｍ... 详细信息

１．ＩｎｔｒｏｄｕｃｔｉｏｎＡｓｏｎｅｋｅｙｃｈａｉｎｆｏｒａｓｅｓｉｎｇｓｌｏｐｅｓｔａｂｉｌｉｔｙ，ｔｈｅａｎａｌｙｓｉｓｏｆｅｎｇｉｎｅｅｒｉｎｇｇｅｏｌｏｇｉｃａｌｓｉｔｕａｔｉｏｎｓｈａｓａｔｒａｃｔｅｄｍｏｒｅａｎｄｍｏｒｅａｔｅｎｔｉｏ...

关键词： ROCK SLOPE OF STABILITY EVALUATION AND

BIOTRANSFORMATION　OF　2.，5α，10β，14β－TETRA－ACETOXY－4（2.），11－TAXADIENE　BY　THE　FUNGIJS　CUNNINGHAMELLA　ECHINULATA

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chinese Chemical Letters 1996年第6期7卷 543-544页

作者： Shang Hut HU Xu Fang TIAN Wei Hua ZHU and Qi Cheng FANG(institute of Materia Medica, chinese {2. or Medical {3.and Peking Union Medical College, beijing 1000050) institute of Materia Medica Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100050

?5α,10β,14β-Tetra-acctoxy-4(2.).11-taxadicne (1) could be regioselectively transfonnedinto 6α 10β-dihydroxy-2.,5α,14β-triacetoxy-4(2.). 11- taxadiene (2. by Cunninghamella echinnlata infair yield. 6βM.10β-Dihydroxy-2.,5α,14β-triacet 11-taxadienc (3.. 10β-hydroxy-2.,5α,14β-triacetoxy-4(2.).11-taxadiene (4), 10 β-hyboxy-4β,2.-epoxy -2.,5α,14β-triacetoxy- tax - 11- ene (5)asminor prpducts were also isolated

关键词： TETRA OF FUNGIJS THE CUNNINGHAMELLA ECHINULATA BY ACETOXY BIOTRANSFORMATION

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The Phylogenetic and Evolutionary Implication of Alcohol Dehydrogenase Gene in Peaonia obovata Complex

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The Phylogenetic and Evolutionary Implication of Alcohol Deh...

第七届全国系统与进化植物学青年学术研讨会

作者： PAN Jin, WANG Chao, SANG Tao, ZHANG Da-Ming (1. Laboratory of Systematic and Evolutionary Botany, institute of Botany, chinese academy of sciences, {2. 100093. China 2. Department of Plant Biology, Michigan State University, MI 4882., USA)

The genus, Peaonia, is a systematically isolated unit with a common placement in the unigeneric family Peaoniaceae. Due to its morphological continuity and hybrid origin, Peaonia proves to be a phylogenetically and taxonomically complex group and in turn a highlight of the systematic and evolutionary researches. With the extensive application of molecular tools, the phylogeny of Paeonia has been previously reconstructed based on DNA sequences from multiple genie and intergenic regions, including the cpDNA gene matK, two intergenic cpDNA spacers, and the nrDNA ITS region and two loci of the low-copy nuclear gene alcohol dehydrogenase genes. These molecular phylogenies were well established among most of the taxonomic species. However, the evolutionary relationships and

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