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Devonian Sedimentary Environments and Provenance of the Qinling Orogen:Constraints on Late Paleozoic Southward Accretionary Tectonics of the North china Craton

Devonian Sedimentary Environments and Provenance of the Qinl...

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中国科学院地质与地球物理研究所2006学术年会

作者： ZHEN YAN~1, institute of Geology and Geophysics,chinese academy of sciences,P.O.Box 9825,beijing 100029,china ZONGQI WANG,QUANREN YAN,TAO WANG, institute of Geology,chinese academy of Geological sciences,beijing 100037,china WENJIAO XIAO,JILIANG LI, State Key Laboratory of Lithosphere Tectonic Evolution,institute of Geology and Geophysics,chinese academy of sciences, P.O.Box 9825,beijing 100029,china FANGLIN HAN,JUNLU CHEN,AND YONGCHENG YANG Shaanxi Insititute of Geology Survey,Xianyang 712000,Shaanxi,china

The Qinling orogen of central china occupies a key position in East Asia,and is of fundamental importance in unraveling its tectonic *** sedimentary basins are located between the North Qinling arc and the Baishuijiang Devonian-Permian accretionary *** indictors and petrological and geochemical analyses show that turbiditic and coastal sandstones and pyroclasts developed in *** of conglomerates and associated turbiditic and pyroclastic rocks evidently was related to the development of the North Qinling orogen rather than the South china *** in the conglomerates were derived predominantly from the North Qinling and partly from its basement. Northward Devonian subduction and subsequent uplift caused successive forearc depocenters and associated facies belts to migrate southwards synchronously with *** and transtensional faults segmented the basins into discrete half-graben *** analysis adjacent to thrust faults demonstrates that thrust sheets crests were truncated by erosion and provided detritus for ***-marine and turbiditic depositional systems evolved in complex patterns to produce varied facies frameworks associated with complex subduction *** facts,together with other geological and geochemical data,demonstrate that the North china craton grew southwards by arc-accretion processes from the end of the early Paleozoic to the beginning of the late Paleozoic,long before the integration of the North china and Yangtze cratons.

关键词： Devonian Qinling Orogen Accretionary Tectonics

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Web应用服务器的可扩展管理模型及其实现

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计算机科学 2004年第3期31卷 19-22页

作者：董伟川金蓓弘张锋范国闯林世彪中国科学院软件研究所软件工程技术研发中心

Web应用服务器是为事务性Web应用提供一系列运行时服务的分布式系统。它既要管理多种不同类型的资源,又要集成以往成熟的网络管理协议和系统,因此,如何统一有效地管理Web应用服务器的资源、应用和服务成为实现Web应用服务的一个难点。为... 详细信息

Web应用服务器是为事务性Web应用提供一系列运行时服务的分布式系统。它既要管理多种不同类型的资源,又要集成以往成熟的网络管理协议和系统,因此,如何统一有效地管理Web应用服务器的资源、应用和服务成为实现Web应用服务的一个难点。为此,本文基于(JMX(Java^(TM) Management Extensions)技术,提出了一种可扩展管理模型,该模型具有较好的灵活性和开放性,可扩展能力强。同时,本文还给出了实现该模型的若干关键技术包括可扩展管理内核的实现技术、资源远程管理技术、服务可扩展管理技术。目前该模型已在我们研制的Web应用服务器WebFrame2.0中成功实现。

关键词：企业网络网络管理可扩展管理模型 Web 应用服务器网络管理协议

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GRAFTING-FROM AND GRAFTING-TO APPROACHES ON PREPARATION OF PET- PALYGORSKITE NANOCOMPOSITES

GRAFTING-FROM AND GRAFTING-TO APPROACHES ON PREPARATION OF P...

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第三届工程塑料国际学术研讨会

作者： Xuepei Yuan 1 2 Chuncheng Li 1 Guohu Guan1 Yaonan Xiao1 Dong Zhang1 1 Laboratory of Engineering Plastics Joint Laboratory of Polymer science and Materials Center for Molecular science institute of Chemistry chinese academy of sciences beijing 100080 P. R. china 2 Graduate School of the chinese academy of sciences beijing 100039 P.R china

＜正＞Compared with other polymers, such as polyamide and epoxide, etc., preparation of PET/clay nanocomposites is not successful. The relative higher processing temperature of PET usually results in

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Exocytosis is essential for the differentiation of xylem elements in Arabidopsis

Exocytosis is essential for the differentiation of xylem ele...

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中国植物学会植物细胞生物学2010年学术年会

作者： Shi-peng Li~(1,2),Min Chen~(1,2),Chun-Ming Liu~(1*) 1 institute of Botany,chinese academy of sciences,beijing,china 2 Life science College,Shangdong Normal University, Jinan,china

Two long-distance transport systems are present in plant body,xylems and *** former one is used for the delivery of water and minerals,while the latter one is used to transport *** mature xylem elements are dead cells,with spirally thickened cell *** recently, very little is known about how cell wall thickening,terminal differentiation and programmed cell death are regulated during xylem *** studied the functions of exocyst complex in Arabidopsis, and identified one exocyst gene that is expressed specifically in xylem *** T-DNA insertion lines,we studied the function of the exocyst protein and found that it is involved in vesicle transport occurred in later stage of xylem *** functional analyses of the gene will be presented in the symposium.

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基于Schema路径分析的XML数据库存储策略

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计算机科学 2003年第8期30卷 69-72页

作者：朱震左春中国科学院软件研究所北京100080

With XML standards playing more and more important role at information exchanges in data management,the XML database storing strategy which supports huge amount XML data control from bottom layer of database hasbecome the key part of fields such as content management. This article proposes an efficiently XML storing strategyfrom the perspective of constraint schema of XML instance based on XML Schema path analysis.

关键词：数据库存储策略 XML Schema 路径分析数据文件

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Solution processable organic molecule photovoltaic materials containing triphenylamine and with D-A-D structure

Solution processable organic molecule photovoltaic materials...

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The 9th china-Japan Joint Symposium on Conduction and Photoconduction in Organic Solids and Related Phenomena

作者： Chang He Qingguo He Fenglian Bai Yongfang Li CAS Key Laboratory of Organic Solids,Center for Molecular sciences,institute of Chemistry,chinese academy of sciences,beijing 100080,china

Organic and polymer solar cells,based on the blend of organic molecules/polymers as donor and soluble C derivative PCBM as acceptor,have attracted great attentions in recent years due to the importance of utilizing solar energy and their advantages of easy fabrication, low cost and light weight in comparison with their inorganic *** the viewpoints of fabrication cost of the devices and purity control of the materials,development of solution processable organic photovoltaic compounds is important for the organic solar cells（OSCs）.

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How Many Leaders Are Required for Consensus

How Many Leaders Are Required for Consensus

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第二十七届中国控制会议

作者： Liu Zhixin Key Laboratory of systems and Control,CAS,beijing 100190,P.R.china

Many natural and artificial systems,for example,fish school,bird flocks,robot team,are often composed of two different classes of agents:autonomous agents and *** leaders have pertinent information,such as the location of the food source,while the autonomous agents make decisions according to local *** a basic problem is:how many leaders are required in order to induce all agents move with the same direction as leaders（such collective behavior is called consensus） In this paper,we will consider a simple,but typical model proposed by Vicsek et al.（Vicsek model） ,in addition to the ordinary agents moving at the constant velocity with heading updated according to local rules,we add some leaders at the same velocity but with fixed *** will show that in order to induce the whole system reach consensus,the proportion of the leaders decreases as the number of autonomous agents increases under some conditions on the velocity v and neighborhood radius *** the numerical examples are given to illustrate the necessity of the *** proof is based on the analysis of the system dynamics and the initial neighbor graph,where multi-array martingale theorem play a key role.

关键词： Leader Consensus Vicsek model Multi-array martingale theorem Neighbor graph

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Numerical Techniques Used in Modeling Codes for Dual-Reflector Antenna Design and Analysis

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Journal of systems Engineering and Electronics 1993年第2期4卷 63-74页

作者： Wang Welling, Wang Shijin and Chen Jingxiongbeijing institute of Radio Measurement, P. O. Box 3923, beijing 100854, china beijing institute of Radio Measurement P. O. Box 3923 Beijing 100854 China

An user-oriented computer software consisting of three modeling codes, named DRAD, DRAA and FDPAT, is introduced. It can be used to design three types of Cassegrain system: classical, with shaped subreflector and with dual shaped reflectors, and to analyse radiation patterns for the antennas. Several mathematical models and numerical techniques are presented.

关键词： Software Numerical technique Antenna Dual-reflector antenna Cassegrain system.

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Strengthening of tropical Indian Ocean teleconnection to the Northwest Pacific since the mid-1970s: An atmospheric GCM study

Strengthening of tropical Indian Ocean teleconnection to the...

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第七届全国优秀青年气象科技工作者学术研讨会

作者： Gang Huang1, Kaiming Hu1,2, Shang-Ping Xie31LASG, institute of Atmospheric Physics, chinese academy of sciences, beijing,china2Graduate University of chinese academy of sciences, beijing, china3International Pacific Research Center and Department of Meteorology, University of Hawaii at Manoa, Honolulu, Hawaii, USA

The correlation of Northwest （NW） Pacific climate anomalies during summer with El Nino/Southern Oscillation （ENSO） in the preceding winter strengthens in the mid-1970s and remains high since. This study investigates the hypothesis that the tropical Indian Ocean （TIO） response to ENSO is key to this interdecadal change,using a 21-member ensemble simulation with the Community Atmospheric Model version 3 （CAM3） forced by the observed history of sea surface temperature （SST） for 1950-2000. In the model hindcast, the TIO influence on the summer NW Pacific strengthens in the mid-1970s, and the strengthened TIO teleconnection coincides with an intensification of summer SST variability over the TIO. This result is corroborated by the fact the model’s skills in simulating NW Pacific climate anomalies during summer increase after the 1970s shift. During late spring to early summer, El Nino-induced TIO warming decays rapidly for the epoch prior to the 1970s shift but grows and persists through summer for the epoch after. This difference in the evolution of the TIO warming determines the strength of the TIO teleconnection to the NW Pacific in the subsequent summer. An anti-symmetric wind pattern develops in spring across the equator over the TIO, and the associated northeasterly anomalies aid the summer warming over the North Indian Ocean by opposing the prevailing southwest monsoon. In the model, this anti-symmetric, spring wind pattern is well-developed after but absent before the 1970s shift.

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Emplacement age and tectonic implications of the Xilinhot A-type granite in Inner Mongolia,china

Emplacement age and tectonic implications of the Xilinhot A-...

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中国科学院地质与地球物理研究所2004学术年会

作者： SHI Guanghai~1,MIAO Laicheng~1,ZHANG Fuqing~1, JIAN Ping~2,FAN Weiming~1 & LIU Dunyi~2 1.institute of Geology and Geophysics.chinese academy of sciences. beijing 100029,china 2.SHRIMP Lab,institute of Geology,chinese academy of Geological sciences,beijing 100037,china

A new rock type of granite,approximate 45 km in area and located about 10 km south of Xilinhot,Inner Mongolia,was found in the Sunitezuoqi(or called Suzuoqi) -Xilinhot tectonic belt and identified as an A-type miarolitic *** pluton has miarolitic structure and is composed chiefly of perthite,quartz,euhedral albite and potassium *** types of textures occur in the pluton,such as perthitie,graphic and myrmekite textures. Only quartz is found in miarolitic *** A-type granite with seagull-shaped REE patterns and obvious negative Eu anomaly(δEu=0.24—0.28) is high in SiO(76%—77%),K and Na(NaO+KO=7.75%—8.15%) and low in Ca(CaO =0.20%—0.22%),Fe and *** petrographical observations and chemical compositions indicate that it is an A-type *** SHRIMP U-Pb analyses indicate that this A-type granite was emplaced at 276±2 Ma and coeval with the same type of granites in the adjacent ***,it suggests that this pluton was likely formed in a post-orogenic extensional setting and probably related to break-off of subducted slabs in Central Asian Orogenic Belt(CAOB),which indicate that the Sunitezuoqi-Xilinhot belt was tectonically evolved into post-orogenic stage since early Permian.

关键词： A-type miarolitic granite SHRIMP Xilin Gol Inner Mongolia

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