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SHRIMP zircon U-Pb geochronology of early Mesozoic felsic igneous rocks from the southern Lancangjiang and its tectonic implications

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Science china Earth Sciences 2006年第10期49卷 1032-1042页

作者： PENG Touping1,2. WANG Yuejun1, FAN Weiming1, LIU Dunyi3, SHI Yuruo3 & MIAO Laicheng4 1. Key Laboratory of Isotope Geochronology and Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, china 2. Graduate University of Chinese Academy of Sciences, beijing 10003., china 3. SHRIMP isotope Laboratory, Chinese Academy of geological Sciences, beijing 10003., china 4. Institute of Geology and Geophysics, Chinese Academy of Sciences, beijing 10002., china Key Laboratory of Isotope Geochronology and Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China Graduate University of Chinese Academy of Sciences Beijing China SHRIMP isotope Laboratory Chinese Academy of Geological Sciences Beijing China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China

The SHRIMP zircon U-Pb geochronology of three typical samples, including two monzo nitic granites from the Lincang batholith and a rhyolite from the Manghuai Formation are presented in the southern Lancangjiang, western Yunnan Province. The analyses of zircons for the biotite monzonitic granites from the northern (02.X-137) and southern (2.JH-10) Lincang batholith show the single and tight clusters on the concordia, and yield the weighted mean 2.6Pb/2.8U ages of 2.9.4 ± 3.0 Ma and 2.0.4 ± 3.6 Ma, respectively, representing the crystallized ages of these granites. The zircons for the rhyolitic sample (02.X-95) from the Manghuai Formation give a weighted mean 2.6Pb/2.8U age of 2.1.0 ± 5.0 Ma. These data suggest that the igneous rocks from the Lincang granitic batholith and Manghuai Formation have a similar crystallized age. In combination with other data, it is inferred that both were generated at a narrow age span (~2.0 Ma) and were originated from the postcollisional tectonic regime. An early Proterozoic 2.6Pb/2.8U apparent age of 1977±44 Ma is additionally obtained from one zircon from the biotite monzonitic granite (southern Lincang batholith), indicative of devel- opment of the early Proterozoic Yangtze basement in the region. These precisely geochronological data provide important constraints on better understanding the Paleozoic tectonic evolution of the Tethys, western Yunnan Province.

关键词： SHRIMP zircon U-Pb dating, Middle Triassic, Lincang granitic batholith, Manghuai Formation rhyolite, southern Lancangjiang.

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Corrosion and electrochemical behavior of as-cast Mg-5Y-7Gd-1Nd-0.5Zr magnesium alloys in 5%NaCl aqueous solution

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Progress in Natural Science:Materials International 2011年第4期21卷 314-321页

作者： Xin ZHANG~(1,2.3),Kui ZHANG~1,Xing-gang LI~1,Cong WANG~4,Hong-wei LI~(2.3),Chang-shun WANG~(2.3),Xia DENG~1 1.State Key Laboratory for Fabrication and Processing of Nonferrous Metals, beijing General research Institute for Nonferrous Metals,beijing 100088,china 2.beijing Engineering research center for Advanced Manufacturing and Evaluation of Special Vehicle Parts,beijing 100072.china 3.Institute of Technology,beijing North Vehicle Group Corporation,beijing 100072.china 4.Fengtai Military Representative Office,beijing Military Representative Office,PLA,beijing 100072.china State Key Laboratory for Fabrication and Processing of Nonferrous Metals Beijing General Research Institute for Nonferrous Metals Beijing 100088 China beijing Engineering research {2. for Advanced Manufacturing and Evaluation of Special Vehicle Parts Beijing 100072 China Institute of Technology Beijing North Vehicle Group Corporation Beijing 100072 China Fengtai Military Representative Office Beijing Military Representative Office PLA Beijing 100072 China

The corrosion mechanism of the as-cast Mg-5Y-7Gd-1Nd-0.5Zr magnesium alloy immersed in 5%NaCl aqueous solution was investigated by electrochemical test and *** electrochemical results indicate that the corrosion resistance of Mg-5Y-7Gd-1Nd-0.5Zr alloy in 5%NaCl aqueous solution gradually deteriorates with immersion time increasing from 2.h,2. h,60 h,to 108 h,which is consistent with the SEM observation of corrosion *** Cl-anion leads to the initiation and development of the corrosion pits,and Mg-5Y-7Gd-1Nd-0.5Zr alloy exhibits filiform type of attack under significant anodic control of magnesium solution *** corrosion potential becomes noble with increasing immersion time.

关键词： magnesium alloys Mg-5Y-7Gd-1Nd-0.5Zr corrosion electrochemical behavior

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Technical development of proteomics

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Chinese Science Bulletin 1999年第16期44卷 1441-1447页

作者： WAN Jinghong and HE Fuchu1.Chongqing Medical University, Chongqing 400046, china 2. beijing Institute of Radiation Medicine, beijing 100850, china Corresponding author Chongqing Medical University Chongqing China beijing Institute of Radiation Medicine Beijing China

Proteome research is an important complementarity for the genome research, which uses quantitative protein-level measurements to characterize biological process. Proteome techniques include two aspects. One is two-dimensional electrophoresis, which is the unique technology to separate the components of proteome. The other is identification of the

关键词： proteome two-dimensional electrophoresis image analysis peptide-mass fingerprinting database.

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The study on Sanmenxia annual flow forecasting in the Yellow River with mix regression model

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Science china(Technological Sciences) 2004年第Z1期47卷 118-126页

作者： JIANG Xiaohui1, LIU Changming1,2. WANG Yu3 & WANG Hongrui1 1. beijing Normal University, beijing 100875,{2. 2. Institute of Geographic Science and Natural Resources, Chinese Academy of Sciences, beijing 100101,{2. 3. Reconnaissance, Planning, Design and research Institute, YRCC, Zhengzhou 450003,{2. beijing Normal University Beijing China Institute of Geographic Science and Natural Resources Chinese Academy of Sciences Beijing China Reconnaissance Planning Design and Research Institute YRCC Zhengzhou China

This paper established mix regression model for simulating annual flow, in which annual runoff is auto-regression factor, precipitation, air temperature and water consumption are regression factors; we adopted 9 hypothesis climate change schemes to forecast the change of annual flow of Sanmenxia Station. The results show : (1) When temperature is steady, the average annual runoff will increase by 8.3% if precipitation increases by 10%; when precipitation decreases by 10%, the average annual runoff will decrease by 8.2.; when precipitation is steady, the average annual runoff will decrease by 2.4% if temperature increases 1℃; if temperature decreases 1℃, runoff will increase by 1.2.. The mix regression model can well simulate annual runoff. (2. As to 9 different temperature and precipitation scenarios, scenario 9 is the most adverse to the runoff of Sanmenxia Station of Yellow River; i.e. temperature increases 1℃ and precipitation decreases by 10%. Under this condition, the simulated average annual runoff decreases by 10.8%. On the contrary, scenario 1 is the best to the enhancement of runoff; i.e. when temperature decreases 1 ℃ precipitation will increase by 10%, which will make the annual runoff of Sanmenxia increase by 10.6%.

关键词： forecast annual flow, mix regression model, Sanmenxia Station

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Numerical experiments for the impacts of temperature and precipitation variation on the growth and development of winter wheat

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Journal of Environmental Sciences 1993年第2期5卷 194-200页

作者： Zhang YuAgrometeorological research center, Chinese Academy of Meteorological Sciences, {2. 100081, china Agrometeorological research center Chinese Academy of Meteorological Sciences Beijing 10081 China. China

The growth process of winter wheat was simulated by CERES-wheat model assuming the daily temperature increase -1, 0,1, 2. and daily precipitation increase -2., -10, -5, 0, 5, 10, and 2. percent, respectively. The case study site is Zhenjiang City of Jiangsu Province in the east china. Simulation results show that the impacts of temperature variation on winter wheat is stronger than that of precipitation. Climate warming would speed development rate and shorten phonological period. In general, the adverse effect of climate change on grain yield is greater than that of its beneficial effect, especially when the climate becoming cooler and dryer. The increase of temperature and decrease of precipitation would reduce the plant extractablc soil water content.

关键词： climate change winter wheat CERES-wheat model.

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Geochemical characteristics of Jurassic coal and significance for the evolution of the environment, Yanqi Basin, china

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Progress in Natural Science:Materials International 2006年第9期16卷 974-982页

作者： WU Chaodong , XU Youling, GUO Zhaojie1, QUAN Shujin, LI Yonglin and FENG Xue ( Key Laboratory of Orogenic Belts and Crustal Evolution of Department of Education, Peking University, beijing 100871, china 3rd {2. survey Brigade, Henan Bureau of Mineralogical and Resources, Xinyang 476000, china Exploration & development research Institute of Henan Oilfield, SINOPEC, Nanyang 473132. china) Key Laboratory of Orogenic Belts and Crustal Evolution of Department of Education Peking University Beijing 100871 China 3rd geological survey Brigade Henan Bureau of Mineralogical and Resources Xinyang 476000 China Exploration and development research Institute of Henan Oilfield SINOPEC Nanyang 473132 China

The Mesozoic strata of the Yanqi Basin consists of coarse debris with coal beds, characterized by the developments of coal seams of the Jurassic sediments whose main petrologic contents are glutenite, fine sandstone, mudstone, carbonaceous shale and coal. Based on the analyses of the minerals, trace elements and REEs, we try to find geochemical characteristics of the coal seam formation process. The analysis results indicate that the contents of ash and sulfur are low while the content of phosphor is comparatively high, and that the specific value of Al2.3/SiO2.is relatively high and that of (Al2.3 + SiO2./(Fe2.3 + CaO+ MgO) is near 1. All these results indicate that the coal seams are formed in the relatively deep marsh, which is favorable for the evolvement of hydrocarbon at the diagenesis stage.

关键词： coal sedimentary geochemistry trace elements Jurassic.

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Final Temperature Prediction Model of Molten Steel in RH-TOP Refining Process for IF Steel Production

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Journal of Iron and Steel research International 2012年第3期19卷 1-5页

作者： WANG Yu-nan1, BAO Yan-ping1, CUI Heng2. CHEN Bin3, JI Chen-xi3 (1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology beijing, beijing 100083,{2. 2. Engineering research Institute, University of Science and Technology beijing, beijing 100083,{2. 3. Shougang research Institute of Technology, beijing 100041,{2.) State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing China Engineering research Institute University of Science and Technology Beijing Beijing China Shougang research Institute of Technology Beijing China

In order to precisely control the final temperature of molten steel in RH （Ruhrstahl Heraeus）-TOP blowing refining, the final temperature prediction models of molten steel in RH-TOP blowing refining process for Interstitial Free （IF） steel production were established under the condition of oxygen blowing and non-oxygen blowing respec- tively. The results show that the beginning molten steel temperature of refining and the amount of added scrap were influential factors, the baking temperature in vacuum chamber was a factor that had small influence. When the model was operated, the hitting probability was above 95%（under the condition of both oxygen blowing and non-oxygen blo- wing） of prediction deviation ±10℃. The accuracy is analyzed.

关键词： RH-TOP molten steel temperature prediction model

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Formation mechanism of carbonate cemented zones adjacent to the top overpressured surface in the central Junggar Basin,NW china

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Science china Earth Sciences 2010年第4期53卷 529-540页

作者： YANG Zhi1,2.ZOU CaiNeng1,3,HE Sheng2.LI QiYan1,HE ZhiLiang3,WU HengZhi5,CAO Feng1,MENG XianLong4,WANG FuRong2.& XIAO Qilin2. State Key Laboratory of EOR,research Institute of Petroleum Exploration & development,Petro{2.,beijing 100083,{2. 2.Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education,{2. University of Geosciences,Wuhan 430074,{2. 3 State Key Laboratory of EOR,research Institute of Petroleum Exploration & development,Petro{2.,beijing 100083,{2. 4 research Institute of Petroleum Exploration and Production,SINOPEC,beijing 100083,{2. 5 Southwest Branch Company,SINOPEC,Chengdu 610051,{2. State Key Laboratory of EOR Research Institute of Petroleum Exploration & Development PetroChina Beijing China Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of Geosciences Wuhan China State Key Laboratory of EOR Research Institute of Petroleum Exploration & Development Petrochina Beijing China Southwest Branch Company SINOPEC Chengdu China research Institute of Petroleum Exploration and Production SINOPEC Beijing China

Carbonate cemented zones are normally adjacent to the top overpressured surface in the central Junggar Basin,NW *** carbon and oxygen isotopic compositions and petrological investigations of carbonate cements in the carbonate cemented zones indicate that:(1) carbonate cements are composed dominantly of ferrocalcite,ferroan dolomite,and ankerite;(2. carbonate cements are formed under a high temperature circumstance in the subsurface,and organic fluid migration has an important effect on the formation of them;and(3) carbon and oxygen ions in the carbonate cements migrate from the underlying overpressured *** suggests that the occurrence of carbonate cemented zones in this region results from multiple phases of organic fluid expulsion out of the overpressure compartment through geological *** study provides a plausible mechanism of the formation of carbonate cemented zones adjacent to the top overpressured surface in the clastic sedimentary basins,and has an important implication for understanding the internal correlation between the formation of carbonate cemented zones adjacent to top overpressured surface and geofluids expulsion out of overpressured system.

关键词： carbonate cemented zones formation mechanism stable carbon and oxygen isotopic top overpressured surface central Junggar Basin coal-bearing strata

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2.2.建筑设计行业发展回顾与2.2.发展展望

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建筑实践 2024年第4期 21-34页

作者： TACTER Engineering research center 天强工程设计咨询行业研究中心

引言 Introduction 2.2.年,面对市场压力和运营挑战,建筑设计行业正在不懈探索创新途径。尽管房地产市场的结构性调整给行业发展带来了一定压力,企业运营也遭遇了多重困难,但通过数据分析可见,建筑设计企业正积极寻求解决方案并不断创...

引言 Introduction 2.2.年,面对市场压力和运营挑战,建筑设计行业正在不懈探索创新途径。尽管房地产市场的结构性调整给行业发展带来了一定压力,企业运营也遭遇了多重困难,但通过数据分析可见,建筑设计企业正积极寻求解决方案并不断创新。它们不仅在逆境中表现出坚韧的发展意志,而且在开拓新业务模式、技术更新以及内部管理提升等方面展现出持续积累与努力的斗志。由于房地产投资减少,建筑设计企业的发展进程遭受一定冲击。然而,面

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Origin and evolution of alkali basaltic magma in the Okinawa Trough

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Acta Oceanologica Sinica 2000年第3期19卷 115-129页

作者：张家强张永福姜晓黎 development and study center Chinese Geological Survey Bureau Beijing 100083 China

The contents of major element composition of the phenocrysts and the matrix glass as well as the spinel inclusions and the melt inclusion in the phenocrysts of the basalt dredged from Station 133 of the Okinawa Trough are determined by electron microprobe. The results show that the basalt is a dor- galite consisting of phenocrysts of bytownite, chrysolite, clinopyroxene and magnetite as well as labradorite microcrystal, matrix glass and a few bits of broken vein quartz. Glassy melt inclusion and chromohercynite or chrompleonaste exist in bytownite and chrysolite. The formation of the spinels is re- lated to partial melting of mantle. The melt inclusions stand for a primary alkali dorgalitic magma, whose composition corresponds to olivine gabbro. The basaltic magma was generated from partial melting of spinel-lherzolite of the upper mantle and evolved in a process of 'alkali dorgalitic magma-trachy- basaltic magma-basdaltic trachytic magma-trachytic magma'. Assimilation and hybridization of crustal material may exist during magma upwelling in every evolutionary stage.

关键词： Basalt spinel melt inclusion magmatic origin magma evolution

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