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Progress in Natural Science:Materials International 2002年第2期 80-82页

作者： LIU Jun and XU Xiaoping(institute of Physics, chinese academy of sciences, Beijing 100080, China)

In line with the rapid development of research on high-temperature superconductors, the establishment of a National Laboratory for Superconductivity in the institute of Physics, the chinese academy of sciences (CAS) was ratified by the State Commission of Development & Planning (SCDP) in 1987. The preparations were started in 1988, and in April of 1991,

关键词： Ph A brief introduction to National Laboratory for Superconductivity chinese academy of sciences

Competitive and cooperative adsorption of arsenate and citrate on goethite

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Journal of Environmental sciences 2009年第1期21卷 106-112页

作者： shi rong,JIA Yongfeng,WANG Chengzhi institute of Applied Ecology,chinese academy of sciences,Shenyang 110016,China institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China

The fate of arsenic in natural environments is influenced by adsorption onto metal （hydr）oxides. The extent of arsenic adsorption is strongly affected by coexisting dissolved natural organic acids. Recently, some studies reported that there existed competitive adsorption between arsenate and citrate on goethite. Humic acid is known to interact strongly with arsenate by forming complexes in aqueous solution, hence it is necessary to undertake a comprehensive study of the adsorption of arsenate/citrate onto goethite in the presence of one another. The results showed that at the arsenate concentrations used in this study （0.006-0.27 mmol/L）, citrate decreased arsenate adsorption at acidic pH but no effect was observed at alkaline pH. In comparison, citrate adsorption was inhibited at acidic pH, but enhanced at alkaline pH by arsenate. This was probably due to the formation of complex between arsenate and citrate like the case of arsenate with humic acid. These results implied that the mechanism of the adsorption of arsenate and citrate onto goethite in the presence of one another involved not only competition for binding sites, but the cooperation between the two species at the watergoethite interface as well.

关键词： adsorption arsenate citrate goethite

Properties of mouse retinal ganglion cell dendritic growth during postnatal development

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Science China(Life sciences) 2010年第6期53卷 669-676页

作者： YANG XiuLan,shi XiangMing & he shigang State Key Laboratory of Brain and Cognitive sciences,institute of biophysics,chinese academy of sciences,Beijing 100101,China State Key Laboratory of Brain and Cognitive sciences Institute of Biophysics Chinese Academy of Sciences Beijing China

The property of dendritic growth dynamics during development is a subject of intense ***,we investigated the dendritic motility of retinal ganglion cells (RGCs) during different developmental stages,using ex vivo mouse retina explant culture,Semliki Forest Virus transfection and time-lapse *** results illustrated that during development,the dendritic motility underwent a change from rapid growth to a relatively stable state,i.e.,at P0 (day of birth),RGC dendrites were in a highly active state,whereas at postnatal 13 (P13) they were more stable,and at P3 and P8,the RGCs were in an intermediate *** any given developmental stage,RGCs of different types displayed the same dendritic growth rate and *** the mouse is the most popular mammalian model for genetic manipulation,this study provided a methodological foundation for further exploring the regulatory mechanisms of dendritic development.

关键词： retinal ganglion cells dendritic development time-lapse observation

Two special topics on the avian influenza virus and on epigenetics,have drawn much attention

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Science China(Life sciences) 2010年第12期53卷 1483-1484页

作者： HU YongLin institute of biophysics,chinese academy of sciences,Beijing 100101,China institute of biophysics Chinese Academy of Sciences Beijing China

Several excellent well-organized reviews and research papers on two special topics, "The challenges of avian influenza virus: mechanism, epidemiology, and control" and "Molecular

关键词： APOBEC gene Two special topics on the avian influenza virus and on epigenetics,have drawn much attention

Identification of connexin 50 and 57 mRNA in A-type horizontal cells of the rabbit retina

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Cell Research 2005年第3期15卷 207-211页

作者： he HUANG*,**,Hui LI*,shi gang he institute of Neuroscience,Shanghai institutes for Biological sciences,chinese academy of sciences,320 yueyang Road,Shanghai 200031,China institute of Neuroscience Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai China

Horizontal cells (HCs) mediate negative feedback to photoreceptors. In the mammalian retina, there are two types of HCs, which are extensively coupled to neighboring cells through homologous gap junctions. The permeability and therefore the strength of feedback can be regulated by light intensity, dopamine and many other factors. However, the component(s) of the most prominent gap junctions, those between A-type HCs in the rabbit retina, is still unknown. In this study, we compared the sequences of many types of mammalian connexins, obtained partial sequences of rabbit connexin 50 and 57. Using specific primers designed against the rabbit sequences, we identified mRNAs of connexin 50 and/or 57 in visually selected single A-type HC using multiplex RT-PCR.

关键词： gap junctions dissociated retinal neurons single cell multiplex RT-PCR sequencing.

Temperature Dependent Work-hardening Behaviour in an Fe-Mn-Si-Cr-Ni Shape Memory Alloy

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Journal of Materials Science & Technology 1995年第4期11卷 304-306页

作者： Lijian rong Yiyi LI and Changxu shi (institute of Metal Research, chinese academy of sciences, Shenyang, 110015, China) Inst of Metal Research Chinese Acad of Sciences Shenyang China

The work-hardening behaviour in an Fe-Mn-Si-Cr-Ni alloy has been investigated using tensile test at different temperatures and TEM observation. It was found that besides the intersection of εmartensite, the intersections of ε martensite with stacking fault and the cross-slip of dislocation which is difficult to occur in the alloy with low stacking fault energy are also important factors to the temperature dependent work-hardening behaviour.

关键词： Work Mn Fe Temperature Dependent Work-hardening Behaviour in an Fe-Mn-Si-Cr-Ni Shape Memory Alloy Cr Si Ni

Vector meson's spin alignments in high energy reactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 5-20页

作者： Jin-Hui Chen Zuo-Tang Liang yu-gang Ma Xin-Li Sheng Qun Wang Key Laboratory of Nuclear Physics and Ion-beam Application (MoE) Institute of Modern PhysicsFudan University institute of Frontier and Interdisciplinary Science Key Laboratory of Particle Physics and Particle Irradiation (MOE)Shandong University INFN-Firenze Department of Modern Physics University of Science and Technology of China School of Mechanics and Physics Anhui University of Science and Technology

The global spin alignment of vector mesons has been observed by the STAR collaboration at the Relativistic heavy Ion Collider （RHIC） at Brookhaven National Laboratory （BNL）.It provides a unique opportunity to probe the correlation between the polarized quark and antiquark in the strongly coupled quark-gluon plasma （sQGP） produced in relativistic heavy ion collisions,opening a new window to explore the properties of s *** addition,spin alignments of vector mesons have also been observed in other high-energy particle collisions such as e+e-annihilations at high energies where hadron production is dominated by quark fragmentation *** results obtained are quite different from those obtained in heavy ion collisions where quark coalescence/combination mechanism dominates suggesting strong dependence on hadronization *** comprehensive studies in different hadronization processes are *** this article,we present a brief review of theoretical and experimental advances in the study of vector meson’s spin alignments in a variety of high-energy particle collisions,with emphasis on hadronization mechanisms.

关键词： vector meson spin alignment global polarization relativistic heavy ion collisions fragmentation

Information from the Kinematics of F and G Stars in the Solar Neighborhood

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chinese Journal of Astronomy and Astrophysics 2002年第5期2卷 419-428页

作者： yu-Qin Chen, gang Zhao and Jian-rong shiNational Astronomical Observatories, chinese academy of sciences, Beijing 100012 National Astronomical Observatories Chinese Academy of Sciences Beijing 100012

We have calculated the orbital parameters for 90 stars in Chen et al. and updated the kinematic data for stars in Edvardsson et al. by using the accurate Hipparcos parallaxes and proper motions, and recalculated the α-element abundances in Edvardsson et al. in a way consistent with Chen et al. The two sets of data are combined in a study of stellar populations and characteristics of F & G stars in the solar neighborhood. We confirm the result of Chen et al. that a distinguishable group of stars may belong to the thick disk rather than the thin disk. The ages for the stars are determined using the theoretical isochrones of VandenBerg et al. The age-metallicity relation is investigated for different subgroups according to distance from the sun and galactic orbital parameters. It is found that a mixing of stars with different orbital parameters significantly affect the age-metallicity relation for the disk. Stars with orbits confined to the solar circle all have metallicities [Fe/H] > -0.3 irrespective of their distances from the sun or from the Galactic plane.

关键词： stars: kinematics - Galaxy: evolution - Galaxy: solar neighborhood

RECENT DOMESTIC PROGRESS IN SPACE CRYSTALLIZATION OF PROTEINS

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空间科学学报 1998年第S1期18卷 98-103页

作者： BI Ru-chang (institute of biophysics, The chinese academy of sciences, Beijing 100101)

The advances of protein crystal growth in microgravity are limited by its low success rate of space crystallization experiments. Our recent efforts have concentrated on exploration of the ways to increase the success rate of the *** corresponding studies include structural comparisons of space- and Earthgrown protein crystals, numerical simulations of solute transport in protein crystallizer, optimization of protein crystailization conditions and improvement of crystallization techniques used. These studies show that the success rate of space protein crystallization could be improved by different ways.

关键词： Protein Crystal growth Microgravity Success rate of experiments