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Oxygen isotopic (^(17)O-^(18)O) heterogeneity in Archaean continental nucleus, north China Craton

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chinese Science Bulletin 1999年第24期44卷 2267-2269页

作者： liu jianzhong, ZHAnG Fuqin, li chunlai and WAnG Shijie {3. of geochemistry , chinese academy of sciences , guiyang 550002 , China {3. of Geophysics , chinese academy of sciences , Beijing 100101 , China institute of geochemistry Chinese Academy of Sciences Guiyang China institute of Geophysics Chinese Academy of Sciences Beijing China

The oxygen isotopic data for amphibolites from Archaean continental nucleus, north China Craton indicate that ( i ) the evolving lines structured by the data are parallel to the geoselenic evolving line, which means that the parent materials of these continental nucleus o-riginated from solar matter; ( ii ) different intercepts for these evolving lines manifest that oxy-

关键词： north China Craton oxygen isotope (I7O-18O ) heterogeneity.

Regulation mechanism of EM parameters in natural ferrite and its application in microwave absorbing materials

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Science China(Technological sciences) 2006年第1期49卷 38-49页

作者： ZHEnG Yongchun1,2, WAnG Shijie2, FEnG junming2, li chunlai1, OUYAnG Ziyuan1,2, liu jianzhong1 & li Xiaobiao2 1. national Astronomical Observatories, chinese academy of sciences, Beijing 100012, China 2. State Key Laboratory of Environmental geochemistry, {3. of geochemistry, chinese academy of sciences, guiyang 550002, China national Astronomical Observatories Chinese Academy of Sciences Beijing China State Key Laboratory of Environmental geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang China

Electromagnetic (EM) parameters (ε ′, ε ″, μ ′, μ″ ) of several M2+Fe2O4 and Fe2O3.type natural ferrites with different geological occurrences are measured in this pa-per. The measurement results show that EM parameters of a magmatic-occurring natural ferrite is very different from other types occurring from sedimentary-metamorphic iron deposit, hydrothermal vein iron deposit, outer contact of magmatic iron deposit. It has potential to be used as magnetic absorbent in microwave absorbing materials. After min-eral separation and concentration, this magmatic-occurring natural ferrite was processed into type A ferrite absorbent. Type A natural ferrite absorbent is a kind of magnetic material with low dielectric constants, high magnetic conductivity and high EM loss. Its EM pa-rameters are ε ′ = 58.60, ε ″ = 10.0, μ ′ = 1.2-1.5, μ ″ = 1.0-1.2, respectively. In order to illuminate the regulation mechanism of EM parameters, we studied the chemical and mineral composition of type A ferrite absorbent. There is high concentration of natural impurities, which regulate the EM parameters of type A ferrite greatly. For comparison, the other types of natural ferrite, single-phase magnetite and two-phase iron minerals (ilmen-ite and magnetite), have few impurity. Thus regulation mechanism of EM parameters was absent in these ferrites. As a result, the regulation of EM parameters is advantageous to develop type A natural ferrite as excellent absorbent, lowers the reflectivity coefficients and enhances the absorbing efficiency of MAM made from it. Furthermore, the impurities in type A natural ferrite and its effects on EM parameters are very difficult to simulate in the synthesize ferrite. The carbonyl-iron powder is another kind of absorbent that is used ex-tensively in MAM. To compare the absorbing properties of these two absorbent, type A natural ferrite and carbonyl-iron powder were mixed with rubber and processed into mi-crowave absorbing sheets with the same procedures and tec

关键词： natural impure ferrite, complex permittivity, complex permeability, microwave absorbing materials.

Chemical-reaction-path modeling of ore-depositional processes in the Shangmanggang gold deposit, Yunnan, China

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chinese Science Bulletin 1999年第S2期44卷 174-176页

作者： li Zeqin, TU Guangchi and li Chaoyang institute of {3., chinese academy of sciences, guiyang 550002, China institute of geochemistry Chinese Academy of Sciences Guiyang 550002 China

THE Shangmanggang gold deposit is located at the southwestern corner of Yunnan, China. The deposit occurs along the southwest-trending Shangmanggang Fault. near the surface, the hanging wall of the fault consists of sandstone and mudstone of the Middle jurassic Mongga Formation (j2m), and also severs asthe hanging wall of the gold orebodies. The footwall of the fault is composed of dolomitite locally intercalated with medium-bedded limestone of Lower Permian Sazipo Formation (P1s). In the depth, the faultcut into strata of the Sazipo Formation (P1s). The deposit is characterized by intense clay alteration,which is similar to the Mercur Gold Deposit, Utah of USA, and by unique hydrothermal pinnacle karsl,

关键词： chemical-reaction-path modeling gold deposit Yunnan.

Palaeoclimatic cycles and new glacial periods induced by the impact of extraterrestrial bodies

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chinese Science Bulletin 1999年第S2期44卷 128-130页

作者： WAnG Shijie, OUYAnG Ziyuan, XIAO Zhifeng and li chunlai State Key Laboratory of Environmental geochemistry, {3. of geochemistry, chinese academy of sciences, guiyang 550002, China. State Key Laboratory of Environmental geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

THE consequence of "nuclear winter" induced by nuclear war and climatic catastrophe induced by extraterrestrial impact were widely studied for fear of the potential danger of the basic nuclear war (the totalexplosive equivalent 5 000Mt TnT). Using zero-dimensional energy balance model authors reportedthe short-term climatic effect induced by six huge Cenozoic bolide-impact events (65, 3., 15, 2.4,1.1, 0.73.MaBP). However, only the direct climatic effect of dusts yielded by the impact was considered in the previous study. In this note, based on the previous simulation results the effect of variance ofglobal reflectance with temperature on the long-term climatic change was further taken into *** with the strata records of palaeoclimatic change the relationship of impact energy with its in-

关键词： bolide impact events palaeoclimatic cycle formation of new glacial period simulating calculation Cenozoic.

Primary scientific results of Chang'E-1 lunar mission

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Science China Earth sciences 2010年第11期53卷 1565-1581页

作者： OUYAnG ZiYuan1,2, li chunlai1, ZOU Yongliao1, ZHAnG HongBo1, Lü Chang1, {3. jianZhong1, liu j.anj.n1, ZUO Wei1, SU Yan1, WEn WeiBin1, BIAn Wei1, ZHAO BaoChang3. WAnG jianYu4, YAnG jianFeng3. CHAnG jin5, WAnG HuanYu6, ZHAnG XiaoHui7, WAnG Shijin7, WAnG Min1, REn Xin1, MU lingli1, KOnG DeQing1, WAnG XiaoQian1, WAnG Fang1, GEnG liang1, ZHAnG ZhouBin1, ZHEnG Lei1, ZHU XinYing1, ZHEnG YongChun1, li junDuo1, ZOU XiaoDuan1, XU Chun1, SHI ShuoBiao1, GAO YiFei1 & GAO Guannan1 1 national Astronomical Observatories, chinese academy of sciences, Beijing 100012, China 2 {3. of geochemistry, chinese academy of sciences,{13., China 3.Xi’an {3. of Optics and Precision Mechanics, chinese academy of sciences, Xi’an 710119, China 4 Shanghai {3. of Technical Physics, chinese academy of sciences, Shanghai 200083. China 5 Purple Mountain Observatory, chinese academy of sciences, nanjing 210008, China 6 {3. of High Energy Physics, chinese academy of sciences, Beijing 100049, China 7 Center for Space Science and Applied Research, chinese academy of sciences, Beijing 100190, China national Astronomical Observatories Chinese Academy of Sciences Beijing China institute of geochemistry Chinese Academy of Sciences Guiyang China Xi’an institute of Optics and Precision Mechanics Chinese Academy of Sciences Xi’an China Shanghai institute of Technical Physics Chinese Academy of Sciences Shanghai China Purple Mountain Observatory Chinese Academy of Sciences Nanjing China institute of High Energy Physics Chinese Academy of Sciences Beijing China Center for Space Science and Applied Research Chinese Academy of Sciences Beijing China

The strategic plan for the development of the unmanned chinese Lunar Exploration Program is characterized by three distinct stages: "orbiting around", "landing on" and "returning from" the Moon. The first chinese lunar probe, Chang'E-1, which was successfully launched on October 24th, 2007 at Xichang Satellite Launch Center, and guided to crash on the Moon on March 1st, 2009, at 52.3.°E, 1.50°S, in the north of Mare Fecunditatis, is the first step towards the "orbiting around" stage. The Chang'E-1 mission lasted 495 days, exceeding the expected life-span by about four months. A total of 1.3. TB raw data was received from Chang'E-1. It was then processed into 4 TB scientific data products at various levels. Many scientific results have been obtained by analyzing these data, including especially the "global lunar image from the first chinese lunar explora- tion mission". All scientific goals of Chang'E-1 have been achieved. It provides much useful materials for further advances of lunar {3. and planetary chemistry. Meanwhile, these results will serve as a firm basis for future chinese lunar missions.

关键词： lunar orbiter Chang’E-1 scientific data results

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小空间碎片数据库的设计与实现

计算机工程与应用 2004年第2期40卷 177-179页

作者：左维李春来刘剑刘建军中国科学院地球化学研究所中国科学院国家天文台北京100012

空间碎片对航天器的安全具有巨大的威胁,且其数量随着人类航天活动的开展仍在高速增长,空间碎片对太空的污染已经成为一个引人瞩目的环境问题。空间碎片信息源的不断丰富以及研究的进一步深入,对碎片信息的管理和共享机制提出了迫切的... 详细信息

空间碎片对航天器的安全具有巨大的威胁,且其数量随着人类航天活动的开展仍在高速增长,空间碎片对太空的污染已经成为一个引人瞩目的环境问题。空间碎片信息源的不断丰富以及研究的进一步深入,对碎片信息的管理和共享机制提出了迫切的要求。因此,建立一个开放的、易于管理和使用的小空间碎片数据库,实现数据的集成共享和规范管理是十分必要的。论文从系统的体系结构、软硬件配置、数据库结构和系统的功能实现等方面,阐述了基于3.B/S计算模式的小空间碎片数据库管理系统的设计和实现。系统运行稳定可靠,具有良好的可扩充性和维护性。该库的建立为空间碎片的研究、防护和数值建模提供了良好的数据服务,使碎片数据得到了充分而广泛的利用,进一步丰富了关于空间碎片的知识。

关键词：空间碎片数据库 B/S计算模式 ASP/ADO

Innovative developments in lunar and planetary science promoted by China's lunar exploration

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Science China Earth sciences 2023年第11期66卷 2399-2418页

作者： chunlai li Wei YAn jianjun {3. Ziyuan OUYAnG Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China institute of geochemistry Chinese Academy of SciencesGuiyang 550002China

As the only natural satellite of the earth, the Moon has always been the first choice for human exploration of the solar system. China's lunar exploration project(Chang'e project) was launched in 2004. At present, it has created a perfect end to the three phases of “orbiting, landing and returning”. A series of remarkable research achievements have been made on the basic issues of current lunar scientific research, such as the Earth-Moon space environment, lunar surface material, morphology,geological structure, lunar subsurface and internal structure, and the origin and evolution of the Moon, further deepening the human understanding of the Moon. This paper briefly reviews the development process of China's lunar exploration project,summarizes the main research results and scientific understanding, and finally prospects to the future development of China's lunar and planetary exploration.

关键词： Lunar exploration Lunar science Chang'e project Scientific achievements Future prospects

Background deduction of the Chang'E-1 gamma-ray spectrometer data

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chinese journal Of geochemistry 2012年第3期31卷 234-241页

作者： ZHAnG liyan li chunlai {3. jinazhong ZOU Yongliao OUYAnG Ziyuan national Astronomical Observatories Chinese Academy of SciencesBeijing 100012China institute of geochemistry Chinese Academy of SciencesGuiyang 550002China Graudate University of chinese academy of sciences Beijing 100049China

Gamma-ray spectrometer(GRS) is used to detect the elemental abundances and distributions on the lunar *** derive the elemental abundances,it is vital to acquire background gamma rays except lunar gamma *** GRS would observe background spectra in the course of earth-moon transfer on *** in fact,GRS was not switched on in the course of flying toward the *** the CE-1 probe finished one-year mission,GRS car-ried out a test on background data on november 21?22,*** authors did conduct research on the methods of background deduction using 2105 hours of usable gamma-ray spectra acquired at the 200-km orbital height by the GRS and more than 5 hours of gamma-ray spectra acquired in the GRS background *** final research results showed that the method of deducting the background using the minimum counts in the CE-1 GRS pixels is optimal for the elements,U,K and *** method applies to such a case that the elemental abundances in the pixel with the minimum counting rate are 0 μg/g and the continuum background counts are constant over the *** on the method of background deduction,the full energy peak counts of U,K,and Th are calculated.

关键词：背景扣除 γ射线谱仪嫦娥一号伽玛射线表面元素元素丰度 GRS 光谱仪

Erratum to:Simulating experiment on the enrichment of precious metals in Lower Cambrian black shale series of Hunan and Guizhou provinces

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Acta Geochimica 2011年第4期30卷 576-576页

作者： HAn Tao1,2, ZHU Xiaoqing1*, and li Zengsheng1,2 1 The State Key Laboratory of Ore Deposit geochemistry, institute of geochemistry, chinese academy of sciences, guiyang 550002, China 2 Graduate University of chinese academy of sciences, Beijing 100049, China The State Key Laboratory of Ore Deposit geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang China Graduate University of chinese academy of sciences Beijing China