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Principles and methods of quantitative analysis on b-axis disorder in 2.: 1 dioctahedral phyllosilicate

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chinese Science Bulletin 1997年第22期42卷 1908-1912页

作者： WANG Ling and ZHANG Zhenyu1. Changsha institute of Geotectonics, chinese academy of sciences, Changsha 410013, China 2. institute of Geology, chinese academy of sciences, Beijing 10002., China Changsha institute of Geotectonics Chinese Academy of Sciences Changsha China institute of Geology Chinese Academy of Sciences Beijing China

IN XRD patterns of clay minerals, a phenomenon that strong peaks often have (00l) and(hkl) (k=3n) indices and show symmetric figures can be seen commonly, while a minorityof reflection peaks (hkl) (k≠3n) are comparat... 详细信息

关键词： b-axis disorder pyrophvllile 2 phyllosilicate clay minerals dioctahedral minerals orientating structure of hy-droxyls crystal structure analysis DTA-TG.

Structure analysis of ^(159)Sm and properties of odd-mass neutron-rich nuclei in mass-160 region

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Science China(physics,Mechanics & Astronomy) 2011年第S1期54卷 81-87页

作者： YANG YingChun1 & SUN Yang1,2.3 1 Department of physics, Shanghai Jiao Tong University, Shanghai 2.02.0, China 2.1},{2., lanzhou 730000, China 3Department of physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA 1. Department of physics Shanghai Jiao Tong University Shanghai 200240 China2. Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China3. Department of Physics and Astronomy University of Tennessee Knoxville Tennessee 37996 USA

Recent fission experiment data provide interesting structure information for neutron-rich nuclei in the mass A ～ 160 region. We apply the projected shell model to study the strongly-deformed, neutron-rich Sm isotopes. We perform calculations for rotational bands up to spin I = 2. (2./2. for even-even (odd-neutron) Sm isotopes, and analyze the band structure of low-lying states with quasiparticle excitations. Emphasis is given to rotational bands based on one-quasiparticle (1-qp) configurations in the odd-mass 159Sm. The 159 Sm result is discussed together with those of the even-even isotopes 158,160Sm. New bands in 159Sm based on neutron 1-qp 1/2.and 5/2. configurations are predicted. Electromagnetic transition probabilities are discussed.

关键词： projected shell model neutron-rich nuclei low-lying excitations isomeric states

Recent glacial retreat in High Asia in China and its impact on water resource in Northwest China

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Science China Earth sciences 2004年第12期47卷 1065-1075页

作者： YAO Tandong 1,2.,WANG Youqing 2.,LIU Shiying 2.1 ,PU Jianchen 2.1 ,SHEN Yongping 2.& LU Anxin 2.1 1.institute of Tibetan Plateau Research,chinese {2. of sciences,Beijing 10002.,China 2.Cold and Arid Regions Environmental and Engineering Research institute,chinese {2. of sciences,lanzhou 730000,China 1. chinese academy of sciences Institute of Tibetan Plateau Research 100029 Beijing China 2. chinese academy of sciences Cold and Arid Regions Environmental and Engineering Research Institute 730000 Lanzhou China

Under the impact of climatic warming, the glaciers in the High Asia in China have been retreating continuously with negative glacial mass balance in recent several decades. The retreat became more intensive in the past 10 years. The spatial pattern of the glacial retreat in the High Asia in China is that the smallest magnitude of retreat is in the inland of the Tibetan Plateau, the magnitude increases from the inland to the margin of the Tibetan Plateau, and the largest magnitude at the margin of the Tibetan Plateau. The glacial retreat in the High Asia in China has an important impact on the water resource of the arid regions in Northwest China. This study shows that the glacial retreat in the 1990s has caused an increase of 5.5% in river runoff in Northwest China. In the Tarim River basin, the increase of river runoff is higher than 5.5%.

关键词： High Asia, glacial fluctuation, impact on water resource.

Structural and microstructural transformations in Bi_2.r_2.a_(1-x)Y_xCu_2._(8+y) system

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chinese Science Bulletin 1997年第3期42卷 192-196页

作者： SONG Chengyu, WEN Shulin and CHE Guangcan1. Shanghai institute of Ceramics, chinese academy of sciences, Shanghai 2.0050, China 2. State Key Laboratory of Supercon-ductivity, institute of physics, chinese academy of sciences, Beijing 100080, China Shanghai institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China

SINCE the discovery of high-Tc superconductors, experiments have revealed that the phase diagrams of La2.xSrxCuO4 and YBa2.u3O6+x resemble each other. The antiferromagnetic phase is commonly situated in the vicinity o... 详细信息

SINCE the discovery of high-Tc superconductors, experiments have revealed that the phase diagrams of La2.xSrxCuO4 and YBa2./sub>Cu3O6+x resemble each other. The antiferromagnetic phase is commonly situated in the vicinity of the superconductive phase. In Bi-2.12.sys-

关键词： Bi2.r2.a1-xYxCu2.y substitution structural transformation.

Separation of Ephedrines Using 1-Butyl-3-methylimidazolium-tetrafluoroborate Ionic Liquids as Eluent in High-performance Liquid Chromatography (HPLC)

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chinese Chemical Letters 2003年第6期14卷 603-604页

作者： Li Jun HE, Wen Zhu ZHANG, Bo WEN, Xia LIU, Sheng Xiang JIANG* lanzhou institute of Chemical {2., chinese academy of Science, lanzhou 730000 lanzhou Inst. of Chemical physics Chinese Academy of Science Lanzhou 730000 China

A simple, effective HPLC method for separation of ephedrines was achieved by using 1-butyl-3-methylimidazolium-tetrafluoroborate ionic liquid solution (0.1% v/v) as eluent at pH 3.0. The involved mechanism may be due to that the imidazolium cations can effectively shield the silanol groups of alkylsilica surface, thereby decreasing band tailing and increasing the separation efficiency.

关键词： Ionic liquid ephedrine HPLC.

SOME CHARACTERISTICS OF THE AVHRR MEASUREMENTS FOR SOME GEOGRAPHICAL REGIONS OVER THE WEST OF CHINA

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高原气象 1991年第2期10卷 166-173页

作者： Wei Li Zhong Qiang(lanzhou institute of Plateau Atmospheric {2., The chinese academy of sciences) 中科院兰州高原大气物理所甘肃兰州

In this paper,some characteristics of the AVHRR measurements（spectral reflectances,vegetation index and window brightnesses）are analysed for several representative regions（50×50 km;）with different underlying surf... 详细信息

关键词： AVHRR data Reflectance Vegetation index Brightness temper-ature

X-ray spectra induced by ^(12.)Xe^(q+) impacting the metal surface

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Science China(physics,Mechanics & Astronomy) 2008年第1期51卷 82-89页

作者： ZHANG XiaoAn 1,2.,XIAO GuoQing 1 ,YANG ZhiHu 1 ,CHEN XiMeng 3 ,ZHAO YongTao 1 , LI FuLi 4 ,WANG Li 1,2.,CUI Ying 3 ,ZHANG HongQiang 3 &ZHAN WenLong 1 1institute of modern physics,chinese {2. of sciences,lanzhou 730000,China 2.epartment of physics,Xianyang Normal University,Xianyang 712.00,China 3Department of modern physics,lanzhou University,lanzhou 730000,China 4Department of Applied physics,Xi’an Jiaotong University,Xi’an 710049,China 1. institute of modern physics Chinese Academy of Sciences Lanzhou 730000 China 2. Department of physics Xianyang Normal University Xianyang 712000 China 3. Department of modern physics Lanzhou University Lanzhou 730000 China 4. Department of Applied physics Xi’an Jiaotong University Xi’an 710049 China

Using the slow highly charged ions 12. Xe q+ (q=2.,2.,2.;initial kinetic T0≤4.65 keV/a.u.)to impact Au surface,the Au atomic Mαcharacteristic X-ray spectrum is *** result shows that as long as the charge state of projectile is high enough,the heavy atomic characteristic X-ray can be effectively excited even though the incident beam is very weak(nA magnitude),and the X-ray yield per ion is in the order of 10-8and increases with the kinetic energy and potential energy of *** measuring the Au Mα-X-ray spectra,Au atomic N-level lifetime is estimated at about 1.33×10-18s based on Heisenberg uncertainty relation.

关键词： slow highly charged ions characteristic X-ray level lifetime

Microwave Effect on Selective Oxidation of Toluene to Benzoic Acid over Modified V2.5/TiO2

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分子催化 1997年第5期 4-5页

作者： LIU Ye LIU Pu GAO Runxiong ZHAO Zhuanyun YIN Yuanqi 1) (lanzhou institute of Chemical {2. The chinese academy of sciences lanzhou 730000)

ＭｉｃｒｏｗａｖｅＥｆｅｃｔｏｎＳｅｌｅｃｔｉｖｅＯｘｉｄａｔｉｏｎｏｆＴｏｌｕｅｎｅｔｏＢｅｎｚｏｉｃＡｃｉｄｏｖｅｒＭｏｄｉｆｉｅｄＶ２Ｏ５／ＴｉＯ２ＬＩＵＹｅＬＩＵＰｕＧＡＯＲｕｎｘｉｏｎｇＺＨＡＯＺｈｕａｎｙ... 详细信息

ＭｉｃｒｏｗａｖｅＥｆｅｃｔｏｎＳｅｌｅｃｔｉｖｅＯｘｉｄａｔｉｏｎｏｆＴｏｌｕｅｎｅｔｏＢｅｎｚｏｉｃＡｃｉｄｏｖｅｒＭｏｄｉｆｉｅｄＶ２Ｏ５／ＴｉＯ２ＬＩＵＹｅＬＩＵＰｕＧＡＯＲｕｎｘｉｏｎｇＺＨＡＯＺｈｕａｎｙｕｎＹＩＮＹｕａｎｑｉ１）（Ｌａｎ...

关键词： Microwave V 2. 5/TiO 2 Toluene Catalytic oxidation Benzoic acid

Critical phenomena of a nuclear system in alternative ZM models

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Nuclear Science and Techniques 2000年第3期11卷 173-178页

作者： SONG Hong-Qiu (Research Center of Nuclear Theory of National Laboratory Of Heavy Ion Accelerator of lanzhou, lanzhou 730000 Shanghai {2. of Nuclear Research, the chinese academy of sciences, Shanghai 2.1800) 兰州原子核理论研究中心重离子加速器国家实验室甘肃兰州 730000

Alternative versions of the ZM model are extended to asymmetric nuclear matter by including p meson degree of freedom in the Lagrangian. The extended models are then used to study the thermodynamical properties of asymmetric nuclear matter at finite temperature. The critical temperature for a liquid- gas phase transition in nuclear matter and its dependence on asymmetry parameter are calculated. The limiting temperature Tlim, which reflects Coulomb instability of hot nuclei, is studied. The calculated results are compared with that given by the original ZM model.

关键词：放射性核素临界现象 ZM模型固气相变热力学稳定性核子核反应临界温度