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Chinese Geographical Science 2005年第3期 29-36页

作者： LIU Yao-bin1, LI Ren-dong2.LI Chun-hua3.(1. School of Management,China University of Mining and Technology,Xuzhou 2.1008,P. R. China 2. institute of Geodesy and Geophysics Research,Chinese {2. of {2.,Wuhan 4.0}077,P. R. China 3. institute of resource,beijing Normal University, beijing 100875,P. R. China ) School of Management China University of Mining and TechnologyXuzhou 221008P. R. China institute of Geodesy and Geophysics Research Chinese Academy of SciencesWuhan 430077P. R. China institute of resource Beijing Normal UniversityBeijing 100875P. R. China

By means of ISM (Interpretative Structural Modeling) and SD (System Dynamics) methods, this paper made a system dynamics model of urbanization and eco-environment coupling in Jiangsu Province according to the implication and PSR (Pressure State Response) framework of urbanization and eco-environment coupling. Moreover, five typical scenarios during 2.00-2.15 have been simulated and analyzed based on the time serial statistical data during 1990-2.03.in Jiangsu, which indicates: firstly, there are significant differences between the results and the scenarios, and the five coupling models all have comparative advantages and drawbacks; secondly, in terms of the characteristics and regional development disparities of Jiangsu and the general rule of world urbanization process, this paper reveals that only when either population urbanization model or social urbanization model to be correspondingly adopted, the sustainable development among population, economy, urbanization and eco-environment can be realized.

关键词： urbanization eco-environment system dynamics model simulation Jiangsu Provincel

Joint source channel VL coding/decoding for deep space communication networks based on a space trellis

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Science China(Information sciences) 2011年第9期54卷 1883-1894页

作者： WU WeiRen 1,TU Juan 2.TU GuoFang 1,GAO ShaoShuai 1 & ZHANG Can 1,3.1 School of Information Science and Engineering,Graduate University of Chinese academy of {2.,{2. 10004.,China 2.{2. institute of Electronic System Engineering,China Aerospace Science & Industry Corp.,{2. 100854.China 3.State Key Laboratory of Information Security,Graduate University of Chinese academy of Science,{2. 10004.,China 1. School of Information Science and Engineering Graduate University of Chinese Academy of Sciences Beijing 100049 China2. Beijing Institute of Electronic System Engineering China Aerospace Science & Industry Corp. Beijing 100854 China3. State Key Laboratory of Information Security Graduate University of Chinese Academy of Science Beijing 100049 China

This paper presents joint source channel variable length (VL) coding/decoding based on a space *** constructing a joint decoding plane trellis,better decoding performance can be achieved than by using the bit-level decoding ***,the plane trellis is complicated,which results in high decoding complexity for decoding VL turbo *** solve this problem,we construct a space trellis and design a low-complexity joint decoding algorithm with a variable length symbol-a posteriori probability (VLS-APP) algorithm in resource constrained deep space communication *** results show that the proposed approach reduces the decoding complexity by 10% compared with the plane trellis,and the gain of Eb/N0 is about 0.2.dB at SER=***,it provides substantial error protection for variable-length encoded image data.

关键词： joint coding/decoding VL turbo codes space trellis VLS-APP

Preliminary study on assessment of nutrient transport in the Taihu Basin based on SWAT modeling

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Science China Earth sciences 2006年第z1期49卷 135-145页

作者： LAI Geying, YU Ge & GUI Feng Nanjing institute of Geography & Limnology, Chinese academy of {2., Nanjing 2.0008, China The Graduate School of the Chinese academy of {2., beijing 10003., China Key Lab of Poyang Lake Ecological Environment and resource Development, Jiangxi Normal University, Nanchang 3.002., China 1. Nanjing institute of Geography & Limnology Chinese Academy of Sciences Nanjing 210008 China2. The Graduate School of the Chinese Academy of Sciences Beijing 100039 China3. Key Lab of Poyang Lake Ecological Environment and Resource Development Jiangxi Normal University Nanchang 330027 China

With the Taihu Basin as a study area, using the spatially distributed and mechanism-based SWAT model, preliminary simulations of nutrient transport in the Taihu Basin during the period of 1995～2.02.has been carried out. The topography, soil, meteorology and land use with industrial point pollution discharge, the loss of agricultural fertilizers, urban sewerage, and livestock drainages were all considered in the boundary conditions of the simulations. The model was calibrated and validated against water quality monitoring data from 2.01 to 2.02. The results show that the annual total productions of nitrogen (TN) and phosphorus (TP) into Lake Taihu are 4.000t and 2.00t respectively. Nutrient from the Huxi Region is a major resource for Lake Taihu. The non-point source (surface source) pollution is the main form of catchment sources of nutrients into Lake Taihu,occupied TN 5{2. and TP 56% respectively. TN and TP nutrients from industrial point pollution discharge are {2.% and 16%, and sewerage in both forms of point source and non-point source are TN {2.% and TP 4.%. Both the loss of agricultural fertilizers and livestock drainages from the catchment should be paid more attention as an important nutrient source. The results also show that SWAT is an effective model for the simulation of temporally and spatially nutrient changes and for the assessment of the trends in a catchment scale.

关键词： Taihu Basin, nutrients, catchment resource inputs, SWAT model, simulation.

Chemical and mineralogical characterizations of a copper converter slag

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Rare Metals 2002年第3期21卷 175-181页

作者： DENG Tong and LING Yunhaninstitute of Chemical Metallurgy, Chinese academy of {2., {3. 00080, China institute of Chemical Metallurgy Chinese Academy of Sciences 北京 100080

A copper converter slag was examined chemically and mineralogically to determine its existing phases, in particular those containing Co and Cu. The slag consists predominantly of fayalite and magnetite, together with some glass, chalcocite, and metallic copper. Copper is entrapped in the slag mostly as chalcocite and metallic copper, as well as trace copper oxide. There was no indication of any independent Co mineral in the slag, but Co was found to be enriched in fayalite and megnetite as solid solution, although Co was detected in all the phases of the slag by SEM-EDX (scanning electron microscopy equipped with model EDAX-9100 energy dispersive spectrometer) and WDS (model WDX-2. X-ray wave-length dispersive spectrometer).

关键词： Cu Co converter slag characterization

Fluid Inclusion Geochemistry of Metallic Ore Deposits in the South- Central Sector of theDa Hinggan Mountains in China

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Acta Geologica Sinica(English Edition) 1995年第3期69卷 289-302页

作者： Sheng Jifu, Zhang Dequan and Li Yaninstitute of mineral Deposits, Chinese {2. of Geological {3., {4. Jiang M inxi institute of mineral Deposits Chinese Academy of Geological Sciences Beijing

Physicochemical parameters of mineralization such as temperature, pressure, salinity, density, composition and boiling of ore fluids as well as pH, Eh, fo2.and reducing parameter in theprocess of mineralization of major ore deposits in the study district have been obtained by the authors through systematic observation and determination of characteristics and phase changes of fluid inclusions at different temperatures and analysis of gaseous and liquid phase compositions of the inclusions, thus providing a scientific basis for the division of mineralization-alteration stages, types of mineral deposits and minerogenetic series and the deepening of the knowledge about the ore-forming processes and mechanisms of mineral deposits. It is indicated that the deposits of the same type have similar fluid inclusion geochemical features and physicochemical parameters though they belong to different minerogenetic series, while the compositions of inclusions are not conditioned by deposit types but closely related to the minerogenetic series of deposits.

关键词： south-central sector of the Da Hinggan Mountains metallic ore deposit fluid inclusion geochemistry

Characteristics of fluid inclusion planes and dynamical mechanism of structure-fluid-ore-forming processes in Yindongpo gold deposit, Henan Province, China

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Chinese Science Bulletin 1999年第S2期44卷 150-152页

作者： WEI Changshan~1, ZHAI Yusheng~2.and GHI Sanchuan~2.1. Yichang institute of Geology and mineral {2.s, Chinese {3. of Geoscience, Yichang 4.3.03. China 2. China University of Geosciences, beijing 100083. China Yichang institute of Geology and mineral {2.s Chinese Academy of Geoscience Yichang 443003 China China University of Geosciences Beijing 100083 China

THE Yindongpo gold deposit, situated in northern Tongbei County, northern Qinling orogenic belt, is alarge-scale one controlled by the Heqianzhuang anticline that plunges northwestwards and dips northeastwards. The ore-bodies locates in the carbon layers belonging to the Neoproterozoic Waitoushan *** ore-forming periods can be distinguished: the pre-Mesozoic epithermal mineralization in primary sediment with metamorphic superposition and the Mesozoic epithermal-mesothermal mineralization related totectonomagmatic activities. The principal ore-forming period can be divided into four stages. The ore bodies consist of networked and brecciated quartz veins. Gold is mainly rich in the veinlet-type quartz veinsthat formed during the diagentic-metamorphism or syn-metamorphic hydrothermal period, but a little inthe coarse veins related to later tectonomagmatic activities. The phenomenon that the fracturing degree

关键词： fluid inclusion planes dynamical mechanism structure-fluid-ore-forming processes gold deposit Yindongpo Henan.

^(4.)Ar/^(3.)Ar Thermochronological Constraints on the Timing of Collisional Orogeny in the Mian-Lite Collision Belt,Southern Qinling Mountains

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Acta Geologica Sinica(English Edition) 1999年第2期73卷 208-215页

作者： LI Jinyi, WANG Zongqi and ZHAO Min institute of Geology, Chinese academy of Geological {2.,{3. Chinese Acad Geol Sci Inst Geol Beijing 100037 Peoples R China

Silurian, Devonian and Carboniferous geological bodies in the Mianxian-Lueyang (Mian-Lue) collisional belt (MLB) and its neighbouring areas, southern Qinling Mountains, China, show similar characteristics of having undergone deformation of two stages. The earlier one, which is inferred to be related to collisional orogeny between the Yangtze and Sino-Korean palaeocontinents based on previous geological data, is responsible for large-scale, north-verging recumbent folds and overthrusts, and associated with low greenschist fades metamorphism. 4.Ar/3.Ar dating of three muscovite samples taken from different localities yields plateau ages of 2.6.9±0.9 and 2.9.5±1.4.Ma and an apparent age of 194.5±3.0 Ma. Thus, the late Triassic collision between the Yangtze and Sino-Korean palaeocontinents has been constrained.

关键词： Qinling Mountains Mian-Lue collision belt muscovite 4.Ar/3.Ar dating collisional orogeny

DMTB:A comprehensive online resource of 16S rRNA genes,ecological metadata,oligonucleotides,and magnetic properties of magnetotactic bacteria

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Chinese Science Bulletin 2011年第6期56卷 476-478页

作者： LIN Wei1,2. LI Bi1,2.& PAN YongXin1,2.1 Paleomagnetism and Geochronology Laboratory, Key Laboratory of the Earth’s Deep Interior, institute of Geology and Geophysics, Chinese academy of {2., {3. 10002., China 2.France-China Bio-{4.ization and Nano-Structures Laboratory, institute of Geology and Geophysics, Chinese academy of {2., {3. 10002., China Paleomagnetism and Geochronology Laboratory Key Laboratory of the Earth"s Deep Interior Institute of Geology and Geophysics Chinese Academy of Sciences France-China Bio-mineralization and Nano-Structures Laboratory Institute of Geology and Geophysics

Magnetotactic bacteria (MTB) are of interest in microbiology, biomineralization, advanced magnetic materials, and bio-geo-sciences because of their ability to form highly ordered intracellular magnetic minerals. Great strides for MTB studies have been made in the past four decades. In this paper we complied the first internet-accessible database for MTB, Database of Magnestotactic Bacteria (DMTB). It contains information of 16S rRNA gene sequences, corresponding ecological metadata, oligonucleotides, and magnetic properties of MTB. The comprehensive information contained in DMTB will provide a very useful data {3. for researchers from different disciplines. The website of DMTB is at http://***/.

关键词： rRNA基因序列趋磁细菌 16S 网上资源寡核苷酸磁学性质生态磁性材料

Sulfide-melt inclusions in mantle xenoliths of Hannuoba,China

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Chinese Science Bulletin 1999年第2期44卷 166-170页

作者： XU Jiuhua , CHU Xuelei , ZHOU Yiming , DU YuanfuUniversity of Science and Technology beijing, beijing 10008{2. China China University of Geo{2.( beijing) , beijing 10008{2. China The Research Center of mineral resources Exploration , beijing 100101, China institute of Geology, Chinese academy of {2., beijing 10002., China University of Science and Technology beijing Beijing China China University of Geosciences (beijing) Beijing China The Research Center of mineral resources Exploration Beijing China institute of Geology Chinese Academy of Sciences Beijing China

Sulfide fluid incluision study on mantle xenoliths of Hannouba has been carried out by EPMA analysis. It is indicated that the Ni/Fe ratios of metal sulfides in sulfide-melt inclusions from Hannuoba seem to be related to host rocks. These data of lherzolite （pentlandite） are obviously higher than those of olivine pyroxenite （mainly pentlandite, partly pyrrhotine）. The LRM analysis shows that sulfur （H2./sub>S+SO2./sub>） occupies larger proportion in gas composition of CO2./sub> fluid inclusions, generally more than mol 2. %. This may be related to sulfide inclusions which are frequently found.

关键词： mantle xenolith sulfide-melt inclusion EPMA.

Research progress in studies on the coalbed gas geochemistry

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Progress in Natural Science:Materials International 2006年第3期16卷 215-220页

作者： TAO Mingxin (College of resources sciences & Technology, {2. Normal University, {2. 100875, China Key Laboratory of Gas Geochemistry, {4. of Geology and Geophysics, Chinese academy of sciences, Lanzhou 73.000, China) [a]College of resources sciences & Technology Beijing Normal University Beijing China [b]Key Laboratory of Gas Geochemistry Institute of Geology and Geophysics Lanzhou China

The current situation of geochemical studies on coalbed gas is reviewed in this paper. Generally, coalbed gas is composi-tionally dominated by methane with δ13.1 values ranging approximately from - 80‰ to - 10‰. However, few isotopic studies have been carried out on other components of coalbed gas except for hydrogen and carbon dioxide, whose δDCH4.values available for utilization vary from - 3.3. to - 117‰, and δ13.CO2.values from - 2.. 4. to + 18. 6‰. Two major types of coalbed gas, thermogenic gas and secondary biogenic gas, have been identified, and there are also some other classification criteria. Compared with conventional natural gases, coalbed gas has a wide distribution range of δ13.1 and δ13.CO2.values, especially possessing some extremely heavy values. Current problems that remain unsolved in the coalbed gas geochemistry include the variation mechanism, controlling factors and application of carbon and hydrogen isotopes of methane, the relation between the values of δ13.1 and Ro, the systematic classification scheme and criterion of genetic types, and the application of the coalbed gas geochemistry in evaluating target districts of the coalbed gas exploration.

关键词： coalbed gas geochemistry isotopic composition genetic type novel resource.