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Computational neuroscience in China

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Science China(Life sciences) 2010年第3期53卷 385-397页

作者： WU Si1 & LIANG PeiJi2 1Institute of Neuroscience,shanghai Institutes for Biological sciences,state key laboratory of Neurobiology,chinese academy of sciences,shanghai 200031,China 2Department of Biomedical Engineering,shanghai Jiaotong University,shanghai 200240,China 1. Institute of Neuroscience Shanghai Institutes for Biological Sciences State Key Laboratory of Neurobiology Chinese Academy of Sciences Shanghai 200031 China2. Department of Biomedical Engineering Shanghai Jiaotong University Shanghai 200240 China

The ultimate goal of Computational Neuroscience(CNS) is to use and develop mathematical models and approaches to elucidate brain *** is a young and highly multidisciplinary *** heavily interacts with experimental neuroscience and such other research areas as artificial intelligence,robotics,computer vision,information science and machine *** paper reviews the history of CNS in China,its current status and the prospects for its future *** of CNS research in China are also presented.

关键词： computational neuroscience experimental neuroscience artificial intelligence

Performance analysis of LDPC codes on OOK terahertz wireless channels

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chinese Physics B 2016年第2期25卷 553-557页

作者：刘纯王长曹俊诚 key laboratory of Terahertz Solid-state technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Science

Atmospheric absorption, scattering, and scintillation are the major causes to deteriorate the transmission quality of terahertz（THz） wireless communications. An error control coding scheme based on low density parity check（LDPC） codes with soft decision decoding algorithm is proposed to improve the bit-error-rate（BER） performance of an on-off keying（OOK） modulated THz signal through atmospheric channel. The THz wave propagation characteristics and channel model in atmosphere is set up. Numerical simulations validate the great performance of LDPC codes against the atmospheric fading and demonstrate the huge potential in future ultra-high speed beyond Gbps THz communications.

关键词： terahertz wireless channels low density parity check codes atmospheric turbulence gamma-gamma models

Syntheses of Clusters Containing C2M2（M=Co,Mo）Cores and Crystal Structure of 〔dpp〕〔Mo2Cp2（CO）4〕·CH2Cl2

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chinese Journal of Structural Chemistry 1999年第4期18卷 35-40页

作者： CHEN XueNian ZHANG Jie YIN YuanQi (state key laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics, the chinese academy of sciences, Lanzhou 730000)ZSUN Jie (shanghai Institute of Organic Chemistry, the chinese Acad state key Lab. Oxo Synthesis S. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China shanghai Inst. of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｅｘｔｅｎｓｉｖｅａｎｄｒａｐｉｄｄｅｖｅｌｏｐｍｅｎｔｏｆｔｈｅｃｈｅｍｉｓｔｒｙｏｆｄｉｎｕｃｌｅａｒｔｒａｎｓｉｔｉｏｎｍｅｔａｌｃｏｍｐｌｅｘｅｓｂｒｉｄｇｅｄｂｙｕｎｓａｔｕ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｅｘｔｅｎｓｉｖｅａｎｄｒａｐｉｄｄｅｖｅｌｏｐｍｅｎｔｏｆｔｈｅｃｈｅｍｉｓｔｒｙｏｆｄｉｎｕｃｌｅａｒｔｒａｎｓｉｔｉｏｎｍｅｔａｌｃｏｍｐｌｅｘｅｓｂｒｉｄｇｅｄｂｙｕｎｓａｔｕｒａｔｅｄｈｙｄｒｏｃａｒｂｏｎｓ...

关键词： cobalt molybdenum diyne compounds crystal structure cluster

Joint transfer of time and frequency signals and multi-point synchronization via fiber network

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chinese Physics B 2016年第1期25卷 608-615页

作者：程楠陈炜刘琴徐丹杨飞桂有珍蔡海文 shanghai key laboratory of All Solid-state Laser and Applied Techniques Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences key laboratory for Quantum Optics CAS Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences

A system of jointly transferring time signals with a rate of 1 pulse per second （PPS） and frequency signals of 10 MHz via a dense wavelength division multiplex-based （DWDM） fiber is demonstrated in this paper. The noises of the fiber links are suppressed and compensated for by a controlled fiber delay line. A method of calibrating and characterizing time is described. The 1PPS is synchronized by feed-forward calibrating the fiber delays precisely. The system is experimen- tally examined via a 110 km spooled fiber in laboratory. The frequency stabilities of the user end with compensation are 1.8x 10-14 at 1 s and 2.0x 10-17 at 104 s average time. The calculated uncertainty of time synchronization is 13.1 ps, whereas the direct measurement of the uncertainty is 12 ps. Next, the frequency and 1PPS are transferred via a metropoli- tan area optical fiber network from one central site to two remote sites with distances of 14 km and 110 km. The frequency stabilities of 14 km link reach 3.0x 10-14 averaged in 1 s and 1.4x 10-17 in 104 s respectively; and the stabilities of 110 km link are 8.3 x 10-14 and 1.7 x 10-17, respectively. The accuracies of synchronization are estimated to be 12.3 ps for the 14 km link and 13.1 ps for the 110 km link, respectively.

关键词： joint time and frequency transfer optical compensation time synchronization

Densification and Sintering Kinetics of Rare Earth(α′+β′)-Sialon Composites

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Journal of Materials Science & technology 1995年第2期11卷 137-140页

作者： Hao WANG T.S.YEN Hanrui ZHUANG and Weiying SUN (state key Lab. on High Performance Ceramics and Superfine Microstructure, shanghai Institute of Ceramics,chinese academy of sciences, shanghai, 2.0050, China) shanghai Inst of Ceramics Chinese Acad of Sciences Shanghai China

The sintering processes of Re-(α' + β')-sialon composites (Re=Sm, Dy, Yb) have been investigated by using a specially designed high temperature dilatometer. The initial densification of various samples starts at about 1200℃, and the maximum shrinkage rate of these sialon composites occurs at about 1500℃. The light rare earth sialon has a noticeably tower densification temperature and a higher final shrinkage. The sirtering kinetics of Re-(α' +β')-sialonare much more complex. The Kingery's liquid phase sintering model appears to be applicable,but the mechanism of mass transport in stage two appears to be changeable. The controlling factor shiffs from solution-precipitation to diffusion when densification process proceeds from the earlier part to the later part of this stage.

关键词： Figure Sialon Composites Densification and Sintering Kinetics of Rare Earth Dy

POLYCLONAL ANTIBODY-CATALYZED HYDROLYSISOFβ-NAPHTHOL ACETATE

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chinese Chemical Letters 1996年第2期7卷 123-126页

作者： Bing Hui YANG Huang Kuan KONG Ji Qing JIANG(state key laboratory of Bioorganic and Natural Products Chemistiy, shanghai Institute of Organic Chemistry, chinese academy of sciences, shanghai 200032)Yong Yong JI Ming YEH(shanghai Institute of Cell Biology,C chinese ACAD SCI SHANGHAI INST ORGAN CHEMSTATE KEY LAB BIOORGAN & NAT PROD CHEMSHANGHAI 200032PEOPLES R CHINA chinese ACAD SCI SHANGHAI INST CELL BIOLSHANGHAI 200031PEOPLES R CHINA

A polyclonal antibody elicited against hapten (4) catalyzed the hydrolysis of β-naphthol acetate with a rate acceleration of 46400 folds.

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A NEW ISOPRENOID-SUBSTITUTED ISOFLAVANS FROM BOOTS OFMAACKIA TENUIFOLIA

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chinese Chemical Letters 1996年第6期7卷 553-554页

作者： Jia Feng ZENG Guo Lin LI Xin XU and Da Yuan ZHU (state key laboratory of Drug Rescearch. shanghai Institute of Materia,chinese academy ofsciences,shanghai 200031) state key Lab. of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 200031

From the roots of Maackia termfolia, a new isoprenoid-substituted isoflavan was isolated andelucidated as Tenuifolin A(I)

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Accountable authority key policy attribute-based encryption

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Science China(Information sciences) 2012年第7期55卷 1631-1638页

作者： WANG YongTao 1,2 ,CHEN KeFei 1,3 ,LONG Yu 1,4 & LIU ZhaoHui 2 1 Department of Computer Science and Engineering,shanghai Jiao Tong University,shanghai 200240,China 2 China Information technology Security Evaluation Center,Beijing 100085,China 3 shanghai key laboratory of Scalable Computing and Systems,shanghai Jiao Tong University,shanghai,200240,China 4.state key laboratory of Information Security,Graduate School of chinese academy of sciences,100039,China 1. Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China2. China Information Technology Security Evaluation Center Beijing 100085 China3. Shanghai Key Laboratory of Scalable Computing and Systems Shanghai Jiao Tong University Shanghai 200240 China4. State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing 100039 China

We present an accountable authority key policy attribute-based encryption (A-KPABE) *** this paper,we extend Goyal's work to key policy attribute-based encryption *** first generalize the notion of accountable authority in key policy attribute-based encryption scenario,and then give a *** addition,our scheme is shown to be secure in the standard model under the modified Bilinear Decisional Diffie-Hellman (mBDDH) assumption.

关键词： accountable authority key policy attribute-based encryption standard model access structure

Effects of Huangqi (Hex) on Inducing Cell Differentiation and Cell Death in K562 and HEL Cells

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Acta Biochimica et Biophysica Sinica 2004年第3期36卷 211-217页

作者： Xiao-Dong CHENG1, Chun-Hui HOU1, Xue-Jun ZHANG2, Heng-Yue XIE1, Wei-Ying ZHOU1, Lei YANG2, Shu-Bing ZHANG1, and Ruo-Lan QIAN1 state key laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, shanghai Institutes for Biological sciences, the chinese academy of sciences, 320 Yueyang Road, shanghai 200031, China laboratory of Molecular Cell Biology, Institute of Biochemistry and Cell Biology, shanghai Institutes for Biological sciences, the chinese academy of sciences,320 Yueyang Road shanghai 200031,China the chinese academy of sciences, 320 Yueyang Road, shanghai 200031, China state key laboratory of Molecular Biology Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences 320 Yueyang Road Shanghai 200031 China laboratory of Molecular Cell Biology Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences 320 Yueyang Road Shanghai 200031 China

Huangqi (Astragalus membranaceus), a traditional chinese medicine, has been used to ameliorate side effects of cancer chemotherapy in China. However, little is known about its molecular mechanisms. Here we show that induction of K562 or HEL cells with 1.5 mg/ml of Huangqi (Hex) (Components extracted from Huangqi) for 3–5 d results in the expression of β-globin gene in both cell lines and leads to terminal differentiation. Moreover, the apoptosis in HEL cells can be induced by increasing concentration of Huangqi (Hex) to 4.5 mg/ml for 3–5 d. Upregulation of Apaf-1, caspase-3 and acetylcholinesterase (AChE) in HEL cells may play a crucial role in the process of apoptosis. The prospect of inducing expression of adult (β) globin gene and apoptosis selectively in cancer cells is obviously attractive from a therapeutic point of view.

关键词： cell death and differentiation Huangqi (Hex) human erythroleukemia cell lines