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A fluid inclusion study of Linglong Gold Deposit,Shandong,china

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A fluid inclusion study of Linglong Gold Deposit,Shandong,Ch...

Timeliness evaluation of task-oriented networked space-based information system

First Meeting Asia Current Research on Fluid Inclusion

作者： Zuqing Zhang, Yong Lai, Yanjing Chen school of earth and space sciences, peking university, beijing 100871, china

Linglong gold deposit is located in northwest of Shandong Peninsula, and is one of the most important super-large scale gold deposits in china. Fluid inclusion studies have been undertaken in order to characterize and understand the mineralizing fluids. Further more, X-type fluid inclusion planes were studied for realizing the relationship between fluid inclusion planes and tectonic events.

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Journal of Systems Engineering and Electronics 2011年第4期22卷 621-627页

作者： Chen Chen 1,2,and Jie Chen 2,3 1.Department of Automation,Tsinghua university,beijing 100084,P.R.china 2.school of Automation,beijing Institute of Technology,beijing 100081,P.R.china 3.Complex System Intelligent Control and Decision,ministry of education,beijing 100081,P.R.china Department of Automation Tsinghua University Beijing 100084 P. R. China school of Automation Beijing Institute of Technology Beijing 100081 P. R. China school of Automation Beijing Institute of Technology Beijing 100081 P. R. China Complex System Intelligent Control and Decision Ministry of Education Beijing 100081 P. R. China

Task-oriented networked information system is an integrated information system which builds on multi-satellite networking to accomplish one or more tasks. In the background of emer- gency relief for applications, system working flow and response process are analyzed, and a timeliness effectiveness evaluation index system is constructed at multi-task level. The effectiveness is a measurement of promptness of information return. In evalua- tion process, system performance and tasks are associated, then an evaluation model based on efficacy function is established, and different evaluation criteria are selected for different tasks. A distributed simulation system is constructed, and the execution of task is decomposed. The simulation platform provides a comprehensive data source for evaluation. The results are easy to compare with each other, which reflects system time efficiency in different satellites networks and provides actual systems with basis and reference for design and application.

关键词： timeliness efficacy function space-based informationsystem simulation system.

Zircon SHRIMP U-Pb Dating and Neoproterozoic Metamorphism of Kangding and Yuanmou Intrusive Complexes,Sichuan and Yunnan

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Journal of earth Science 2009年第6期20卷 897-908页

作者：李大鹏陈岳龙罗照华赵俊香 school of the earth sciences and Resources China University of Geosciences Institute of Crustal Dynamics China Earthquake Administration

To clarify the relationship of the metamorphic intrusions along the west margin of the Yangtze craton and their metamorphic history after crystallization, the petrochemical and trace element geochemical characters, zircon SHRIMP U-Pb dating, and the chemical compositions of coexisting hornblendes and plagioclases from Neoproterozoic metamorphic intrusions in Kangding （康定）, Sichuan （四川） Province, and Yuanmou （元谋）, Yunnan （云南） Province, were studied. Combined with the former published data, it is indicated that the Kangding granitic plutons and Yuanmou complex in the west margin of the Yangtze craton generally formed at the same period. Metamorphic event at ~700 Ma existed extensively, at least covering from Kangding area in Sichuan to the Eshan （峨山） area in Central Yunnan. Moreover, amphibolite facies may represent the peak regional metamorphic condition.

关键词： Yangtze craton Kangding-Yuanmou complex SHRIMP metamorphic history.

Ce Anomalies of the Yangtze Region,South china,through the Ordovician and Silurian Transition

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Journal of earth Science 2009年第6期20卷 941-948页

作者：严德天张丽琴李双建 Key Laboratory of Tectonics and Petroleum Resources of ministry of education China University of GeosciencesWuhan Institute of Geology and Geophysics Chinese Academy of Sciences school of Geodesy and Geomatics Wuhan University Key Laboratory of Geospace Environment & Geodesy of ministry of education Wuhan University Petroleum Exploration and Production Institute of SINOPEC

Systematic Ce anomalies for whole-rock have been obtained from the shale-dominated, continuous, and pelagic sedimentary sequences spanning the Ordovician/Silurian （O/S） boundary at the Tieshui （铁水） of Xiushan （秀山）, Chongqing （重庆）, South china. Ce anomalies across the O/S boundary are recognized in three intervals, Wufeng （五峰）, Guanyinqiao （观音桥） and Longmaxi （龙马溪）. The calculated Ce/Ce＊ values of Wufeng Formation range from 0.84 to 0.96 （avg. 0.90）. In the Guanyinqiao Formation, the values of calculated Ce/Ce＊ range from 0.73 to 0.85 （avg. 0.79）. The Ce/Ce＊ values of uppermost Longmaxi Formation range from 0.87 to 0.96 （avg. 0.91）. All along the section, the magnitude of the Ce anomaly is always negative, but is more significant in the Guanyinqiao Formation. The relatively higher Ce/Ce＊ values in the Wufeng and Longmaxi shales are likely to be due to the sediments deposited under rather reducing conditions. The Ce anomaly apparently does play some regular roles in the anoxic events that accompany prominent mass extinctions, and this work provides new data of critical importance for constraining models on the end-Ordovician anoxic events and mass extinctions.

关键词： Ce anomaly redox mass extinction Ordovician/Silurian boundary Yangtze platform.

An efficient quantum secret sharing protocol with orthogonal product states

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Science china(Physics,Mechanics & Astronomy) 2007年第3期50卷 331-338页

作者： YANG YuGuang1,2, WEN QiaoYan3 & ZHU FuChen4 1 school of Computer, beijing university of Technology, beijing 100022, china 2 State Key Laboratory of Information Security, Graduate university of Chinese Academy of sciences, beijing 100022, china 3 school of Science, beijing university of Posts and Telecommunications, beijing 100876, china 4 National Key Laboratory for Modern Communications, Chengdu 610041, china 1. school of Computer Beijing University of Technology Beijing 100022 China 2. State Key Laboratory of Information Security Graduate University of Chinese Academy of Sciences Beijing 100022 China 3. school of Science Beijing University of Posts and Telecommunications Beijing 100876 China 4. National Key Laboratory for Modern Communications Chengdu 610041 China

An efficient quantum secret sharing protocol with orthogonal product states in the 33 Hilbert space is presented. The particles in the orthogonal product states form two particle sequences. One sequence is sent to Bob and the other is sent to Charlie after rearranging the particle orders. With the help of Alice, Bob and Charlie make the corresponding local measurement to obtain the information of the or- thogonal product states prepared. This protocol has many distinct features such as great capacity and high efficiency.

关键词： quantum secret sharing orthogonal product state orthogonal measurement

Spatio-temporal carbon isotope variation during the Ediacaran period in South china and its impact on bio-evolution

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Science china earth sciences 2009年第10期52卷 1520-1528页

作者： WANG XinQiang1 & SHI XiaoYing1,2 1 school of earth Science and Mineral Resources, china university of Geosciences, beijing 100083, china 2 State Key Laboratory of Geological Processes and Mineral Resources, beijing 100083, china school of earth Science and Mineral Resources China University of Geosciences Beijing 100083 China State Key Laboratory of Geological Processes and Mineral Resources Beijing 100083 China

The Ediacaran period is characterized by the extremely negative carbon isotope anomalies and great biotic evolution in earth history. At least four negative carbon isotope anomalies have been reported from this interval in South china so far. It is traditionally argued that the isotope variations can be used as a useful tool for global correlation of Ediacaran succession; however, more and more researches argued against this idea. We reviewed the previously published carbon isotope data in South china, and distributed the mean values of a certain time to the paleogeographic maps. The results show that the carbon isotope values (δ13C) vary greatly in different environments, but a clear tendency of becoming lighter from shallow platform to deep basin, with a maximum variation up to 1‰ Moreover, the important changes in Ediacaran biota, marked by the introducing of new taxa or ecologic groups, seemed to always postdate the negative anomalies but coincide with the positive shift. If the negative excursions represented the oxidation of a large dissolved organic carbon (DOC) reservoir in the ocean, the diverse Ediacaran organisms and the carbon isotope anomalies may suggest totally different environments: oxic and anoxic/euxinic. We also suggest that the elimination of euxinic state through precipitation of pyrites is one of the important environment factors in prompting the Ediacaran bio-evolution.

关键词： Ediacaran South china carbon isotope spatio-temporal variations bio-evolution

Geochronological Framework of the Early Precambrian Rocks in the Liaodong Peninsula and Their Geodynamic Implications

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吉林大学学报(地球科学版) 2015年第S1期 149-150页

作者： Zhuang Li Bin Chen The Key Laboratory of Orogenic Belts and Crustal Evolution Ministry of Education School of Earth and Space Sciences Peking University

The dynamic setting and tectonic evolution of the Jiao-Liao-Ji Belt(JLJB),North china Craton,however,remains controversial;some workers believe that it formed by the closure of an intra-continental rift,others suggest that it is an arc-continent collisional *** a controversy arises from the lack of a systematic study on the origin and geochronology of the Early Precambrian rocks in the Liaodong *** new data are inconsistent with the rifting model,but rather,support the arc-continent collision model,as described below.

关键词： continent collision tectonic metamorphic inconsistent closure zircon controversial geochemical depositional

Microstructure characteristics of illite from Chuanlinggou Formation of Changcheng System in Jixian County, Tianjin City

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Science china earth sciences 2007年第10期50卷 1452-1458页

作者： CHEN Tao1,2 & WANG HeJing2? 1 Institute of Gemology, china university of Geosciences, Wuhan 430074, china 2 school of earth and space sciences, peking university, beijing 100871, china Institute of Gemology China University of Geosciences Wuhan 430074 China school of earth and space sciences Peking University Beijing 100871 China school of earth and space sciences Peking University Beijing 100871 China

The microstructure charateristics of illite from the Chuanlinggou Formation of Changcheng System (Chch) in Jixian County, Tianjin City has been studied by means of high-resolution transmission electron microscopy (HRTEM), selected-area electron diffraction (SAED), X-ray energy dispersive spectrum (EDS) and X-ray powder diffraction (XRD). The Kuebler index of ''illite crystallinity'' is 0.505° Δ2θ, which indicates that the host rock is in a middle diagenetic stage. The chemical analyses of EDS for illite studied indicate a heavily absent in interlayer cation and an average chemical formula of K_(0.57)(AI_(1.80)Mg_(0.42)(Fe^(2+))_(0.12))_(∑=2.34)(Si_(2.92)Al_(1.80))_(∑=4)O_(10)(OH)_2. It is found, from one-dimensional lattice images, that the layers of illite not only stack in a flat way but also in a curving way. A ''matting fabric'' illite structure results from stacking faults. Combined with SAED analysis the illite studied can be affirmed as 1M illite. The two-dimensional lattice images are obtained from [100] and [110] incidences, whose lattice images have the same d-values but different intersecting angles. The two-dimensional lattice image with [100] incidence is orthogonal to each other, whilst that with [110] incidence is oblique. This paper provides some important structure information of authigenic clay minerals for the well-known mesoproterozoic section of Jixian County.

关键词： Jixian illite, microstructure, high-resolution transmission electron microscopy (HRTEM), one-dimensional lattice images, two-dimensional lattice images

Quasi-periodic outflows observed by the X-Ray Telescope onboard Hinode in the boundary of an active region

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Research in Astronomy and Astrophysics 2010年第12期10卷 1307-1314页

作者： Li-Jia Guo Hui Tian Jian-Sen He school of earth and space sciences Peking University Beijing 100871 China guolijia32 @ 163. com Max-Planck-Institut fur Sonnensystemforschung 37191 Katlenburg-Lindau Germany

Persistent outflows have recently been detected at the boundaries of some active regions. Although these outflows are suggested to be possible sources of the slow solar wind, the nature of these outflows is poorly understood. Through an analy- sis of an image sequence obtained by the X-Ray Telescope onboard the Hinode spacecraft, we found that quasi-periodic outflows are present in the boundary of an active region. The flows are observed to occur intermittently, often with a period of 5-10 min. The proj ected flow speed can reach more than 200 km s^-1, while its distribution peaks around 50 km s^-1. This sporadic high-speed outflow may play an important role in the mass loading process of the slow solar wind. Our results may imply that the outflow of the slow solar wind in the boundary of the active region is intermittent and quasiperiodic in nature.

关键词： solar wind -- Sun: UV radiation -- active region