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Chronological and geochemical studies of granite and enclave in Baimashan pluton, Hunan, South china

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Science china Earth Sciences 2007年第11期50卷 1606-1627页

作者： CHEN WeiFeng1, CHEN PeiRong1, HUANG HongYe2. DING Xing1,3 & SUN Tao1 1 State Key Laboratory of Mineral Deposit Research, department of Earth Sciences, Nanjing university, Nanjing 2.0093, {2. 2.Research Institute No.2.0, CNNC, Changsha 410011, {2. 3 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, {2. 1. State Key Laboratory of Mineral Deposit Research Department of Earth Sciences Nanjing University Nanjing 210093 China 2. Research Institute No.2.0 CNNC Changsha 410011 China 3. Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China

Zircon LA-ICP-MS U-Pb dating reveals that the Baimashan Pluton is composed mainly of late Indosinian (2.4.5±2.8 Ma-2.9.2.3.8 Ma) biotite granodiorites/monzonitic granites (LIGs) and early Yanshanian (176.7±1.7 Ma) two-micas monzonitic granites (EYGs), and the coeval (2.3.2.4.5 Ma-2.5.1±3.9 Ma) mafic microgranular enclaves (MMEs) are generally found in the former. In addition, the ages of cores within zircons from LIGs and MMEs ranging from 2.1.4±4.0 Ma to 2.6.5±4.1Ma provide evidence of multistage magma intrusion during Indosinian in the study area. Measured 3010±2..6 Ma of inherited zircon age suggests that there may be recycling Archaean curstal material in existence in this area. LIGs and EYGs share some similar geochemical features: subalkaline and peraluminous granites, enrichment of Th, U, K, Ta, Zr, Hf and LREE but depletion of Ba, Nb, P, Ti and Eu, low εNd(t) values but high (87Sr/86Sr)i ratios, and old T2.M (ca. 1.9-2.0 Ga). The behaviors of incompatible elements and REE are mainly dominated by fractional crystallization of plagioclase, K-feldspar, ilmenite and apatite, but that of Sr isotope mainly controlled by EC-AFC. They are crust-sourced and derived from partial melting of paleo-Proterozoic metagreywackes and related to biotite dehydration melting. LIGs are formed in post-collisional tectonic setting as crustal local extension and thinning during late Indosinian. But EYGs may be evolved products of congeneric granitic magma with LIGs formed in late Indoinian, which were emplaced again when crust underwent extensive thinning and extension in post-orogenic tectonic setting during Yanshanian in SC after undergoing EC-AFC. MMEs should be cognate enclaves and derived from liquid immiscibility of host magma.

关键词： granite,mafic microgranular enclave,zircon LA-ICP-MS dating,lithogenesis,EC-AFC

WEAK CHEBYSHEV SPACES ON LOCALLY ORDERED TOPOLOGY SPACE AND THE RELATED CONTINUOUS METRIC SELECTIONS

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Chinese Annals of Mathematics 1987年第4期8卷 420-427页

作者：李武 department of Mathematics Hangzhou university china.

Let C(X)be the space of all continuous real-valued functions on a compact Hausdorffspace X under the uniform norm:‖f‖=max{|f(x)|:x∈X}.For G(?)C(X),defineP_G(f)={g∈G:‖f-g‖=inf{‖f-p‖:p∈G}}.If there exists a continuous mapping S from C(X)to G such that S(f)∈P_G(f)for everyf in C(X),then S is called a continuous selection of the metric projection P_*** G is called a Z-subspace of C(X),if,for every nonzero g in G,g does not vanishon any open subset of *** this paper,the author gives several characterizations of Z-subspaces G whose metricprojections P_G have continuous *** following results are obtained:If X is locally connected and G is an n-dimensional Z-subspace of C(X),then P_G hasa continuous selection if and only if every nonzero g in G has at most n zeros and has atmost n-1 zeros with sign changes.

关键词：一夕 WEAK CHEBYSHEV SPACES ON LOCALLY ORDERED TOPOLOGY SPACE AND THE RELATED CONTINUOUS METRIC SELECTIONS De 一刁

Study on multi-scheme analysis and evaluation method for concrete sequence placement of high arch dam

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Science china(Technological Sciences) 2011年第S1期54卷 47-53页

作者： ZHONG GuiLiang,REN BingYu & TONG DaWei department of Hydraulic and Hydroelectric Engineering,School of Civil Engineering,Tianjin university,Tianjin 300072.{2. 1. department of Hydraulic and Hydroelectric Engineering School of Civil Engineering Tianjin University Tianjin 300072 China

A complete scheme for solving the key scientific problems of how to make concrete sequence placement scheme of high arch dam reasonable and feasible and how to meet the need of construction process was ***,based on a coupling analysis of concrete sequence placement system of high arch dam,a mathematical model considering complex construction constraints was ***,a multi-scheme computational analysis method for concrete sequence placement of high arch dam was proposed based on dynamic ***,a multi-scheme evaluation method for concrete sequence placement was put forward based on analytic hierarchy ***,feedback guidance for progress control and management in the high arch dam construction process was ***,these methods were applied to a practical project to show that the methods can analyze and evaluate multi-scheme for concrete sequence placement of high arch dam effectively,optimize the process of dam concrete sequence placement,and recommend engineering *** methods provide new theoretical principles and technical measures for real-time progress control in the high arch dam construction.

关键词： sequence placement analysis multi-scheme evaluation dynamic simulation analytic hierarchy process high arch dam construction

GENERALIZED KP EQUATION AND MIURA TRANSFORMATION

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Chinese Science Bulletin 1989年第1期34卷 1-6页

作者：田畴 department of Mathematics University of Science and Technology of China Hefei

Suppose u is independent of y, we obtain the KdV equation ul+uxxx+6uux=0.

关键词： Bieklund transformation Miura transformation Sauze transformation.

Structural immunology of costimualtory and coinhibitory molecules

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Science china(Life Sciences) 2010年第2期53卷 183-189页

作者： WANG ShengDian1 & CHEN LiePing1,2.1Center for Infection and Immunity,Institute of Biophysics,Chinese Academy of Sciences,Beijing 100101,china 2.1} of Oncology,Johns Hopkins {2. School of Medicine,Baltimore,Maryland,USA 1. Center for Infection and Immunity Institute of Biophysics Chinese Academy of Sciences Beijing 100101 China2. Department of Oncology Johns Hopkins University School of Medicine Baltimore Maryland USA

The T cell costimulatory pathways are central to regulating immune responses,and targeting these pathways represents one of the most promising approaches for achieving *** molecular structures of costimulation revealed invaluable mechanistic insights underlying costimulatory receptor/ligand specificity,affinity,oligomeric state,and valency,which provided the bases for better manipulation of these signaling *** incredible growth of this field led to identification of new members and unexpected interactions,revealing a complicated regulatory network of immune *** advances in structural biology of costimulation will promise unprecedented opportunities for furthering our understanding and therapeutic application of T cell costimulatory pathways.

关键词： costimulatory molecules T cells molecular structure immunotherapy

Breast Cancer Diagnosis via Support Vector Machines

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Breast Cancer Diagnosis via Support Vector Machines

Effects of Temperature on the Dynamic Properties of Asphalt Mixtures

第2.届中国控制会议

作者： Wang Yi,Wan Fuyong department of Mathematics,East china {2. university,Shanghai 2.0062.china department of Mathematics,East china {2. university,Shanghai 2.0062.china

＜正＞This paper describes the application of SVM to breast cancer diagnosis,which has shown good generalization. We take use of non-symmetrical C-SVM to solve the problem of unbalanced training examples. In order to gain a fastsearching method for parameters of the model,a margin-based bound on generalization is more effective than traditionalk -fold cross-validation. After feature subset selection by a cross-entry filter,we even gained a perfect prediction accuracy.

关键词： Breast Cancer Diagnosis Non-symmetrical C-SVM Generalization Bound Cross-entropy Filter

来源： cnki会议评论

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Journal of Wuhan university of Technology(Materials Science) 2010年第3期25卷 534-537页

作者：郑元勋 The State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology School of Hydraulic and Environment Zhengzhou University

By using the falling weight deflectometer（FWD）,the dynamic loading tests on different thickness of asphalt mixture pavement in different temperature were *** experimental results show that the effects of temperature on dynamic properties of asphalt mixture are significant,and the thickness of asphalt mixture is also another important influence *** comparisons indicate that effect of temperature on the behaviors of dynamic loading properties and static loading properties of asphalt mixture were quite different.

关键词： asphalt mixtures temperature correction dynamic properties falling weight deflectometer(FWD)

The formation depth of coesite-bearing eclogite,Dabie UHPM zone,china,modified by tectono-original additional hydrostatic pressure

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Chinese Science Bulletin 1999年第5期44卷 398-411页

作者： LU Guxian, CHEN Jing, LIU Ruixun and LI Xiaobo Institute of Geomechanics , Beijing 100081, china Electron Microscopy Laboratory, Peking university, Beijing 100871, china department of Geology, Peking university, Beijing 100871, china Institute of Geological Information , Beijing 100037, china Institute of Geomechanics Beijing China Electron Microscopy Laboratory Peking University Beijing China department of Geology Peking University Beijing China Institute of Gelogical Information Beijing China

The knowledge that hydrostatic pressure is equal to the gravity value of the overlying rocks in studying a dynamic state of certain underground site is argued. It is suggested that the stress field T in the crust is a combination or superposition of total hydrostatic pressure P with differential stress σ,and the total hydrostatic pressure P at any point in the crust comprises two parts: one is spherical stress tensor PG caused by the gravity, and the other is spherical stress tensor Ps caused by tectonic stress; therefore P could not be attributed to the gravity of overlying rocks only. The results obtained by a finite-element simulation indicate that the tectono-original additional hydrostatic pressures Ps decrease gradually from the compressive zone （pcS） to the shear zone (PSHs)and to the tensile zone （PTs）, i.e.Pcs>PsHs>PTs in the same depth. On the basis of the above-mentioned research, the method of measurement and calculation of metallogenetic depth corrected by Ps is

关键词： formation depth tectonic additional hydrostatic pressure Dabie UHPM zone coesite-bearing eclogite expansion-cracking texture tectonic physicochemistry.

Synthesis and Structural Characterization of [(h^5-C_5Me_5)_2.o_2.e_2._4Br_2.

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Chinese Journal of Structural Chemistry 2002年第1期21卷 34-37页

作者： YU Hong JI Shun-Jun Lang Jian-Ping② (department of Chemistry and Chemical Engineering, Suzhou university, Suzhou 2.5006, {2.) department of Chemistry and Chemical Engineering Suzhou University Suzhou 215006

The reactions of [(h5-C5Me5)Mo(StBu)3] with equimolar FeBr3 in THF afforded a neutral tetranuclear cluster [(h5-C5Me5)2.o2.e2.4Br2. 1. The structure of 1 was determined by single-crystal X-ray diffraction analysis. 1 crystallizes in the monoclinic space group P2./n (No. 14) with a = 9.691(2., b = 15.2.4(2., c = 18.850(2. ? b = 96.44(1), V = 2.59.8(7) ?, Z = 4, Mr = 862.08, Dc = 2.075 g/cm3, F(000) = 1680, m (MoKa) = 51.31 cm-1 and T = 2.6.2.K. With the use of 3667 observed reflections (I > 3.0s(I)), the structure was refined to R = 0.041 and Rw = 0.051. 1 is composed of a distorted Mo2.e2.4 cubane core with two Br atoms and two h5-C5Me5 groups coordinating at the Fe and Mo sites, respectively. The lengths of MoMo and FeFe bonds are 2.82. and 2.773 ? respectively the mean length of MoFe bond is 2.751 ?

关键词： synthesis crystal structure molybdenum cluster iron cluster