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天体物理学报 1991年第3期11卷 220-226页

作者：周大庄 K.K.Tang 中国科技大学地球与空间科学系美国芝加哥大学费米研究所天体物理与空间研究室

本文利用几种典型的银河系宇宙线分布律和星际氢分布律计算单漏模式和双漏模式中的弥散宇宙γ射线谱。结果表明,几种典型的宇宙线分布中,李惕碚的分布律优于其他作者的分布律;星际氢分子数量的取值应当比Gordon值除以1.7更小;只要适当... 详细信息

本文利用几种典型的银河系宇宙线分布律和星际氢分布律计算单漏模式和双漏模式中的弥散宇宙γ射线谱。结果表明,几种典型的宇宙线分布中,李惕碚的分布律优于其他作者的分布律;星际氢分子数量的取值应当比Gordon值除以1.7更小;只要适当地选择宇宙线分布和氢分布就可得到与观测γ谱相近的理论谱,宇宙线分布和氢分布均可在一定范围里选取。

关键词：宇宙线氢分布 γ射线

Kinematic Study on Motoman HP6 Arc Welding Robot Based on Unigraphics

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Transactions of Tianjin university 2011年第3期17卷 199-202页

作者：冯胜强胡绳荪申俊琦 Tianjin Key laboratory of Advanced Joining technology School of Material Science and Engineering Tianjin University Ningbo Branch of China Academy of Ordnance science

The links of Motoman HP6 arc welding robot are considered as an open kinematic chain which consists of a series of rotational joints through concatenation. One end of the open chain is fixed to the base or the earth, and the other end which is free fastens the end executor to complete various duties. Each link of this arc welding robot has four kinds of Denavit-Hartenberg parameters: common normal length between two adjacent links, angle of two adjacent joints, distance between the crossing of common normal length and two joints axes, and angle of two adjacent links. The displacement relation between each link of the Motoman HP6 arc welding robot is introduced, and the kinematic positive-going solution and the kinematic passive-going solution are calculated.

关键词： arc welding robot link Denavit-Hartenberg parameter kinematic positive-going solution kinematicpassive-going solution off-line programming

Tribological behavior of electric-deposition nickel- BN composite coatings at high temperature

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Tribological behavior of electric-deposition nickel- BN comp...

THE FIRST DISCOVERY OF TERRESTRIAL ORTHOPYROXENE WITH space GROUP P2_1ca

China 6th International Symposium on Tribology

作者： Jianliang Li Dangsheng Xiong Yongkang Zhang Yongkun Qin school of material science and Engineering Nanjing {3. of science and technology 210094

＜正＞Introduction space bearing,seal ring,bearing retainer and other parts relative to the friction require a long work hour at high temperature,high load,high vacuum,strong radiation and high corrosion,*** oil and grease are no longer satisfying these requirements,so the solid self-lubricating composite materials emerge as the times *** the various solid self-lubricating

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Chinese science Bulletin 1988年第18期33卷 1552-1554页

作者：罗谷风徐惠芳薛纪越胡梅生范成高张庶元 Department of earth sciences Nanjing University Centre of material Analyses Nanjing University Centre of material Structure and Composition Analyses University of Science and Technology of China Hefei

Conventionally the space group of the individual member in orthopyroxenes is Pbca. Up to the present it is known that there are only a few orthopyroxene specimens found in lunar rocks and meteorites to possess space group P21ca. Having investigated the hypersthene megacryst from norite pegmatite in Blackhill, Chengde, Hebei Province, the authors affirm that the space group of the host for the megacryst is P21ca. Thus, it is considered that as a low orthopyroxene polymorph of space group P21ca it is firstly discovered on earth.

关键词： orthopyroxene hypersthene space group P21ca Hebei

纳米CaF_2离子电导率和介电常数的静水压效应

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物理学报 1995年第5期44卷 755-762页

作者：苏昉谢斌赵明文吴希俊中国科学技术大学基础物理中心中国科学院固体物理研究所合肥230031

用惰性气体蒸发和真空原位加压方法制备了具有清洁界面的平均粒度14nm的纳米固体CaF_2,并在0.0001—2.2GPa范围52个不同的静水压下分别详细测量出其离子电导率σ和相对介电常数随压力变化的规律。讨论指出:1)离子迁移通道受压后的变化(... 详细信息

用惰性气体蒸发和真空原位加压方法制备了具有清洁界面的平均粒度14nm的纳米固体CaF_2,并在0.0001—2.2GPa范围52个不同的静水压下分别详细测量出其离子电导率σ和相对介电常数随压力变化的规律。讨论指出:1)离子迁移通道受压后的变化(大于、等于或小于最佳值)是影响离子电导率-压力曲线峰值的主要因素;2)当压力从0.66GPa再增加时lgσ分三段线性下降,可归因于纳米晶材料的三种自由体积;3.界面层空间电荷极化是造成纳米CaF_2相对介电常数较大的原因,由此可理解介电常数的压力效应。为了提高产品的氟离子电导率,真空原位加压制备纳米材料时应当采用更高的压力,0.66GPa。

关键词：二氟化钙纳米级氟离子电导率介电常数

Effect and mechanism of stresses on rock permeability at different scales

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science China earth sciences 2006年第7期49卷 714-723页

作者： YIN Shangxian1 & WANG Shangxu2 1. Safety Engineering College, North China Institute of science and technology, Yanjiao, Beijing 101601, China 2. Key laboratory of Geophysics Exploration, China {3. of Petroleum, Beijing 100083. China Safety Engineering College North China Institute of Science and Technology Yanjiao Beijing China Key laboratory of Geophysics Exploration China University of Petroleum Beijing China

The effect of geo-stress fields on macroscopic hydro-geological conditions or micro-cosmic permeability of water-bearing media should follow some laws or principles. Cases study and tests show that: (1) At macro-geologic large scale, deformed and crashed rocks which were induced by geo-stress fields changing provided space for groundwater storage and flow. Groundwater adjusts water-bearing space and dilatants fractures by flowing and press transferring. Coupling of liquid and solid can be implemented for rocks and groundwater. Although tectonic fields witness several times of change and build-up in geological time, stress fields forming regional tectonic framework are coherent with seepage fields, orientation of the maximum horizontal stress demonstrates main seepage direc-tions. (2) At macro-geologic middle scale, zones of stresses changing sharply, quite low stresses, stress or shear concentration can be used to show locations and types of main fractures, zones of geo-stresses changing equably can be acted as normal base media zones of tri-porosity media. (3. At micro-geologic small scale, tri-porosity media include fractured rocks, porous rocks and capillary rocks. Investigations indicate that porosity or permeability is functions of effective stresses, and po-rosity or permeability changing rules of porous rocks with variation of effective stresses can be de-scribed as the index model, the model of power exponent functions is suitable for those of fractured rocks, the model of the second power parabola for capillary rocks. The porosity and permeability loss in fractured rocks, which are greater than that in porous rocks, are shown by calculation of effective compressive coefficient and closing pressure in cracks. The calculations can also explain the mecha-nism why porosity changes are always larger than permeability changes. It is proved by the thick wall cylinder theory that the second power parabola relation between porosity or permeability loss and effective

关键词： geo-stress fields, seepage fields, tri-porosity media, effective stresses, permeability, porosity,scale.

The surface geochemical exploration of oil and gas in the Gangbatong-Ya'anxiang and the Dongqiao-Nam Co of the Qinghai-Tibet region

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science China earth sciences 2009年第S1期52卷 69-76页

作者： XIONG Bo1,2,LI XianQing3.4,LI YiBin5 & TAN Qing6 1 Department of Geochemistry,Yangtze university,Jingzhou 43.023.China 2 Key laboratory of Exploration Technologies for Oil and Gas Resources(Yangtze university) ,Ministry of Education,Jingzhou 43.023.China 3.State Key laboratory of Coal Resources and Safe Mining,China university of Mining and technology,Beijing 100083.China 4 Department of Resources and earth sciences,school of Resources and Safety Engineering,China university of Mining and technology,Beijing 100083.China 5 Institute of Geosciences,Yangtze university,Jingzhou 43.023.China 6 Jinzhou Research Branch of New Region Exploration,Research Institute of Petroleum Exploration and Development,SINOPEC,Jingzhou 43.100,China 1. Department of Geochemistry Yangtze University Jingzhou 434023 China 2. Key laboratory of Exploration Technologies for Oil and Gas Resources (Yangtze university) Ministry of Education Jingzhou 434023 China 3. State Key laboratory of Coal Resources and Safe Mining China University of Mining and Technology Beijing 100083 China 4. Department of Resources and earth sciences School of Resources and Safety Engineering China University of Mining and Technology Beijing 100083 China 5. Institute of Geosciences Yangtze University Jingzhou 434023 China 6. Jinzhou Research Branch of New Region Exploration Research Institute of Petroleum Exploration and Development SINOPEC Jingzhou 434100 China

Due to the complexity of geological background and the adverseness of natural geographical environment in the Qinghai-Tibet Plateau,it is very difficult to carry out petroleum geological study in this region. The Qinghai-Tibet Plateau is the only blank space of petroleum exploration on a large scale. The authors carried out the surface geochemical exploration of oil and gas in the Gangbatong-Ya'anxiang and Dongqiao-Nam Co of the Qinghai-Tibet region. Based on the data of actual detection and experiments in the studied area,the characteristics of concentration and profile distribution of the main geochemical exploration indicators(total adsorbed hydrocarbon,altered carbonate,thermal released mercury,etc.) were discussed. The origin of hydrocarbon was also discussed. Moreover,the oil and gas potential of different sections in the Qiangtang Basin and the Biru Basin were evaluated,which could provide references for the exploration and prediction of oil and gas in this region. The concentrations of total adsorbed hydrocarbons in the Ya'anxiang of Suoxian County-Zadong of Baqing County and the Jiecha-Dangxiong of Anduo County in the Qinghai-Tibet region are high,averaging 3.2.64 μL·kg-1 and 164.3. μL·kg-1. Their altered carbonate concentrations are relatively low,averaging 0.11% and 0.56%. Their concentrations of thermal released mercury are relatively high,averaging 13.09×10-9 and 1.94×10-9. Geochemical exploration results in fact reflect hydrocarbon information in the underground,which are mainly petroleum associated gas and over-matured cracking gas. The Jiecha-Charenluma and the Xiamaya'ertong-Suoba sections in the Qiangtang Basin are the most favorable ones for oil and gas and the Ekou-Zadong section is relatively favorable one,while the Nam Co and the Zigetangcuo-Dongqiao sections in the Biru Basin are the favorable ones for oil and gas,and the Jiang Co-Nading Co and the Ya'anxiang-Ya'ertong sections are relatively favorable ones.

关键词： geochemical exploration adsorbed hydrocarbon indicator hydrocarbon anomaly evaluation of oil and gas Qinghai-Tibet region

Petrogenesis and magma residence time of lavas from Tengchong volcanic field(China):evidence from U-series disequilibria and 40Ar/3.Ar dating

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Petrogenesis and magma residence time of lavas from Tengchon...

A NEW PROGRESS IN OCEAN SURFACE WIND VECTOR DETECTION USING MICROWAVE REMOTE SENSING

中国科学院地质与地球物理研究所2006学术年会

作者： Fei WANG State Key laboratory of Lithosphere Tectonic Evolution,Institute of Geology and Geophysics,Chinese Academy of sciences,Beijing 100029,China Zicheng PENG Department of earth and {3. sciences,China university of science and technology,hefei 23.026, China Rixiang ZHU Huaiyu HE Liekun YANG State Key laboratory of Lithosphere Tectonic Evolution,Institute of Geology and Geophysics,Chinese Academy of sciences,Beijing 100029,China

We present U-Th disequilibria measurements as well as radiogenic and trace element data for volcanic rocks erupted over the past～200,000 years at Tengchong volcano field(TVF), near the collisional belt of India-Asia,Southwestern *** separates,matrix and whole rock were analyzed separately by mass spectrometry for Th-U *** rocks are characterized either by Th enrichment or depletion relative to *** mineral internal Th age isochrons and a CO-laser Ar/Ar age were determined.A difference of 0 ka between the Th age and the Ar/Ar age can be interpreted as the residence time of the associated magma. Large variations in Sr,Nd,and Pb isotopic compositions and trace element ratios suggest more than one source for the TVF *** Th contents,Th/U ratios and LILE element abundances, as well as their large variations can be attributed to partial melting of mantle previously metasomatized by subduction-derived *** of U in some lavas could be the feature of another end-member,an arc-type melt,in the *** extraction of the melts may result in the observed chemical disequilibrium.

关键词： Tengchong volcanoes 23.Th-23.U disequilibria Petrogenesis 40Ar/3.Ar dating

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空间科学学报 1998年第S1期18卷 75-86页

作者： JIANG Jing-shan WANG Xin-zhong DONG Xiao-long HUANG Jing (Center for space science and Applied Researeh,The Chinese Acedemy of sciences, Beijing 100080)

In this paper, a new progress in scattering measurement of ocean surface wind vector using a space borne scanning scatterometer (CNSCAT) has been described. The CNSCAT developed during the past five years in the laboratory for Microwave Remote Sensing and Information technology (MIRIT), CSSAR,The Chinese Academy of {3., will be launched in early next decade. This paper also discussed CNSCAT system design, system calibration and some theoretical analysis.

关键词： Microwave Remote Sensing earth observation CNSCAT