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Experiment of the ^(40)Ar/^(39)Ar dating of diagenetic illite in gas reservoirs

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Chinese Science Bulletin 2004年第S1期49卷 89-93页

作者： WANG Longzhang, DAI Tongmo & PENG Ping’an State Key Laboratory of Organic Geochemistry, guangzhou institute of Geochemistry, CAS, guangzhou 510640, china Faculty of Resources, Chinese university of Geosciences, Wuhan 430074, china State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry CAS Guangzhou 510640 China

40Ar/39Ar dating of diagenetic illite has been performed to investigate gas reservoirs in the Sulige Gas Field of the northern Ordos Basin. A series of technical challenges were confronted, including illite purification, Ar recoil loss, and separation of diagenetic illite from detrital illite. Mineral growth ages for diagenetic illite were obtained by this experiment, from which the age of gas emplacement was deduced to be later than 169 Ma.

关键词： 40Ar/39Ar dating diagenetic illite purification of clay minerals Ar recoil loss time of gas emplacement.

First report of Protokeelia spinifera and Rhopalodia iriomotensis from china,with comments on their systematic positions

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Journal of Systematics and Evolution 2009年第2期47卷 173-178页

作者： 1,2Yang LI 2Ya-Hui GAO 1,3Song-Hui LU 1(College of Life Sciences,South china Normal university,Guangdong Provincial Key Lab of Biotechnology for Plant Development,guangzhou 510631,china) 2(Key Laboratory for Subtropical Wetland Ecosystem Research,Ministry of Education,School of Life Sciences,Xiamen university,Xiamen 361005,china) 3(institute of Harmful Algae and Aquatic Environment,jinan university,guangzhou 510632,china) CollegeofLifeSciences SouthChinaNormalUniversityGuangdongProvincialKeyLabofBiotechnologyforPlantDevelopmentGuangzhou510631China MinistryofEducation SchoolofLifeSciencesXiamenUniversityXiamen361005China

Protokeelia is described as a new and rare pennate diatom genus in *** valve includes two parts:ventral valve and dorsal *** ventral valve is more or less convex or *** raphe runs in a distinct elevated and thickened siliceous *** the internal valve,beneath the raphe are fibulae or fibulae clusters which connect the ventral and dorsal *** species,*** Round & Basson,is observed in the water samples from a mangrove forest in Sai Kung,Hong Kong,*** main morphological features are described in this paper along with electron microscope(EM) *** comparisons are also made among several allied *** addition,a newly recorded species for china,Rhopalodia iriomotensis Kobayasi,Nagumo & Tanaka,is discussed *** several key features observed in this species resemble those of some Pro-tokeelia species,we suggest that it may actually represent a Protokeelia species.

关键词： china new genus record Protokeelia Rhopalodia iriomotensis

Effects of crystallization fractions on mechanical properties of Zr-based metallic glass matrix composites

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Science china(Physics,Mechanics & Astronomy) 2010年第3期53卷 424-429页

作者： QIU ShengBao1,2, YAO KeFu1 & GONG Pan1 1 KLAMPT, Department of Mechanical Engineering, Tsinghua university, Beijing 100084, china 2 institute of Industry Technology, guangzhou & Chinese Academy of Sciences, guangzhou 511458, china Tsinghua university KLAMPT Department of Mechanical Engineering Beijing China (GRID:grid.12527.33) (ISNI:***) guangzhou & Chinese Academy of Sciences Institute of Industry Technology Guangzhou China (GRID:grid.495710.e) Tsinghua university KLAMPT Department of Mechanical Engineering Beijing China (GRID:grid.12527.33) (ISNI:***)

The Zr41Ti14Cu12.5Ni10Be22.5 (at.%) bulk metallic glass composites with various crystallization fractions were prepared by pretreating the bulk metallic glassy samples with pulsing current, and then by isothermal annealing at near initial crystallization temperature for different periods of time. The precipitations and crystallization fractions were studied by X-ray diffraction (XRD) and differential scanning calorimetry (DSC), and their effects on mechanical properties of the composite were studied by microhardness, uniaxial compression test and scanning electron microscopy (SEM). The experimental results show that the primary precipitate is quasicrystalline phase and other metastable phases including Be2Zr, Zr2Cu and FCC would precipitate subsequently. In the initial crystallization process, in which the crystallization fraction increases from 0 to 8.2%, both fracture strength and plastic strain increase, with the maximum plastic strain up to 6.4%. When the crystallization fraction is larger than 8.2%, the fracture strength and the plastic strain decrease sharply. Furthermore, the alloy with low crystallization fraction is fractured by shearing, while for high crystallization fraction it is fractured by splitting and cleavage. The results show that the mechanical properties of the glassy alloy could be optimized by controlling the processing parameters.

关键词： bulk metallic glass pulsing current crystallization fraction plasticity shear band

A Slip-Line Method for Calculating Extrusion Force of Steel Helmet with Cold Extrusion Moulding

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Journal of Systems Engineering and Electronics 1999年第2期10卷 75-81页

作者： Guo Jinji Zhao Sheng Xing Haoxu(Department of Applied Mechanics and Engineering, Zhongshan university,guangzhou 510275, P. R. china)Guan Guifen Liu Zhijian(The Iron Steel Research institute of Guangdong,guangzhou 510275, P. R. china) Department of Applied Mechanics and Engineering Zhongshan university guangzhou 510275 P. R. china The Iron Steel Research institute of Guangdong Guangzhou 510275 P. R. China

This paper presents the elastic and plastic deformation of the steel helmet with coldextrusion moulding. The plastic streamline of the plastic mould-making process for ellipse thinplate is described. The distribution of slip-line is established based on the plastic streamline. Theextrusion force of plastic moulding of the steel helmet is calculated by using of slip-line ***, an applied example is given.

关键词： Steel helmet Cold extrusion Plastic streamline slip-line method Extrusion force.

Non-invasive in Situ Simultaneous Measurement of Multi-parameter Mechanical Properties of Red Blood Cell Membrane

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Acta Biochimica et Biophysica Sinica 2005年第6期37卷 391-395页

作者： Jing LI~(1.2) Yao-Xiong HUANG~1 Tao JI~1 Mei TU~1 Xuan MAO~1 Wen-Xin CHEN~1 Guang-Wei CHEN 1 institute of Biomedical Engineering, jinan university, guangzhou 510632, china 2 State Key Laboratory for Biocontrol, School of Life Science, Sun Yat-Sen university, guangzhou 510275, china instituteofBiomedicalEngineering JinanUniversityGuangzhou510632China

The purpose of this study was to develop a new dynamic image analyzing technique that willgive us the ability to measure the viscoelastic parameters of individual living red blood cells non-invasively,insitu and in real *** this technique,the bending modulus Kc,the shear elasticity μ and their ratio ε weremeasured under different temperatures,oxygen partial pressures and osmotic *** results not onlyshow the effects of external conditions on mechanical properties of cell membranes including deformability,flexibility,adhesive ability and plasticity,but also demonstrate that the technique can be used to measure cellmembrane parameters continuously under several physiological and pathological conditions.

关键词： fast image analyzing red blood cell(RBC) cell membrane elastic property

A new method to improve surface morphology of Ni-Fe-Mo-Co alloy electrode and its catalytic activity for HER

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Rare Metals 2007年第3期26卷 205-212页

作者： LUO Beiping REN Buye XU You ZHENG Yajie Department of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang 414000 China College of Metallurgical Science and Engineering Central South University Changsha 410083 China Research institute of Materials Science South China University of Technology Guangzhou 510640 China

A new pretreatment method has been developed to improve the catalytic activity of the Ni-Fe-Mo-Co alloy electrode for hydrogen evolution reaction （HER）. The procedure involves pre-electrolyzing the Ni-Fe-Mo-Co alloy electrode in 30% KOH solution containing 10% potassium sodium tartrate at 70℃ for 2 h, until some of the Mo and Fe elements are leached out. The surface morphology of the Ni-Fe-Mo-Co alloy demonstrates a unique hive-like structure after the pre- treatment, which has the pore size in a nanometer range （about 50 nm）, a very large real surface area, and good stability. The results of the electrochemical studies show that compared to other similar electrode materials and the treated Ni-Fe-Mo-Co electrode by leaching method, the pre-treated Ni-Fe-Mo-Co electrode has a much lower overpotential and much higher exchange current density for HER. In addition, a long-term continuous electrolysis test with a current interruption shows that the Ni-Fe-Mo-Co alloy has excellent catalytic stability.

关键词： catalytic activity surface treatment Ni-Fe-Mo-Co alloy hydrogen evolution electrodeposition

Investigations of Processing Parameters of Thermal Poling Optical Fibers by using of In Situ Testing System

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Investigations of Processing Parameters of Thermal Poling Op...

New dragonflies (Insecta: Odonata: Gomphaeschnidae) from the Yixian Formation in Inner Mongolia, china

Asia-pacific Optical Communications 2004

作者： Zhe Chen Peifan Jiang institute of Optoelectronic Engineering jinan university guangzhou 510632 P.R.china

In order to investigate the effects of processing parameters in thermal poling, an in situ testing system used for thermal poling optical fibers was constructed with an all polarization maintaining fi

关键词： electrooptic effect poled fiber thermal poling in situ test fiber optic interferometer

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Progress in Natural Science:Materials International 2008年第1期18卷 59-64页

作者： Binglan Zhang a ,Dong Rena ,*,Hong Pang b aCollege of Life Science,Capital Normal university,Beijing 100037,china bState Key Laboratory of Biocontrol and institute of Entomology,Sun Yat-sen university,guangzhou 510275,china College of Life Science Capital Normal University Beijing 100037 China State Key Laboratory of Biocontrol and institute of Entomology Sun Yat-sen University Guangzhou 510275 China

Two fossil dragonflies from the Upper Jurassic to Lower Cretaceous Yixian Formation in Liutiaogou Village,Ningcheng County, Inner Mongolia,china are described and *** are assigned to two new genera and species,i.e.,Sophoaeschna frigida gen. et *** Falsisophoaeschna generalis *** *** the family Gomphaeschnidae Tillyard&Fraser,*** is the first report of Odonata from Yixian Formation in Inner Mongolia and the second record of fossil Gomphaeschnidae from china.

关键词： Odonata New genus Upper Jurassic to Lower Cretaceous Yixian Formation china

Southeastern extension of the Red River fault zone (RRFZ) and its tectonic evolution significance in western South china Sea

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Science china Earth Sciences 2006年第8期49卷 839-850页

作者： LIU Baoming1,2,3, XIA Bin1, LI Xuxuan1,3, ZHANG Minqiang1,3, NIU Binhua2, ZHONG Lifeng1, JIN Qinghuan1,4 & JI Shaocheng1,5 1. Key Laboratory of Marginal Sea Geology and Resources, Chinese Academy of Sciences,guangzhou 510640, china 2. china university of Geosciences (Beijing), Beijing 100083, china 3. Research Center of Science & Technology Department, CNOOC, Beijing 100027, china 4. guangzhou Marine Geological Survey, Ministry of Land & Resources, guangzhou 510075, china 5. Ecole Polytechnique Montreal, H3C3A7, Canada Key Laboratory of Marginal Sea Geology and Resources Chinese Academy of Sciences Guangzhou China china university of Geosciences (Beijing) Beijing China Research Center of Science & Technology Department CNOOC Beijing China guangzhou Marine Geological Survey Ministry of Land & Resources Guangzhou China Ecole Polytechnique Montreal Canada

Recent geophysical surveys and basin modeling suggest that the No.1 fault in the Ying- gehai basin (YGHB) is the seaward elongation of the Red River fault zone (RRFZ) in the South china Sea (SCS). The RRFZ, which separates the South china and Indochina block, extends first along the Yuedong fault, offshore of Vietnam, and then continues southward and breaks off into two branches: the Lupar fault and the Tinjia fault. The southern extension of the Lupar fault dies out beneath the NW Borneo while the Tinjia fault extends southeast and reaches the Brunei-Sabah area. According to the gravity and geomagnetic data, and the tectonic evolution of the basins, there are different evolution histories between the Wan’an basin (WAB) and the basins in the Nansha block. The Tinjia fault may be the boundary between the Balingian block and the Nansha block. Hence, the line linking the Yue- dong fault and the Tinjia fault, which both are continental margin faults and strike-slip ones in the geological evolution histories, constitute the boundary between the Indochina and Nansha block. The Lupar fault, in contrast, is an intraplate fault within the Indochina block. The results provide new hints for reconstructing the tectonic evolution history of the RRFZ and the opening of the SCS, and also a framework for hydrocarbon prospecting in the region.

关键词： Red River fault zone, tectonic evolution, fault, extension, western South china Sea.