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| 1 | 固定化细胞技术的研究与进展显示文摘综述了近年来固定化细胞技术的固定化制备。 | 王新 yahoo.com 李培军 yahoo.com 巩宗强 yahoo.com 张海荣 yahoo.com | 2001 | 农业环境保护2001,20,2: | 60 |
| 2 | 受损背根节神经元自发放电节律的整数倍模式及其动力学变化显示文摘本文记录了大鼠损伤背根节神经元的自发放电活动。采用背根节慢性压迫动物模型,记录慢性压迫手术后3~10d背报节的自发放电。在记录的156根纤维中,观察到17根(占11%)出现的动作电位峰峰间期(ISI)以某一基础间期的整数倍模式出现的整数倍时间节律形式,其回归映射图为晶格状点阵结构,并且该时间形式受细胞膜上钠、钾通道的调控。上述结果表明:某些直观看似不规则的放电时间序列是有着内在的结构和规律性的,这种规律取决于膜上通道和内环境的状态。 | 龙开平 yahoo.com 胡三觉 段玉斌 徐晖 | 1999 | 生理学报1999,51,5: | 6 |
| 3 | 一种新型的综合型安全系统研究显示文摘提出了一种新型的基于 El Gamal型算法而非 RSA( Rivest r.l.,Shamir A.,Adleman)算法的综合型Yaksha安全系统 .该系统可以用作加密、数字签名、分布式认证、密钥交换 .文章当前的热点问题“密钥托管” | 蒙杨 刘克龙 卿斯汉 yahoo.com | 2000 | 软件学报2000,11,5: | 6 |
| 4 | DYNAMICS FOR VORTICES OF AN EVOLUTIONARY GINZBURG-LANDAU EQUATIONS IN 3 DIMENSIONS显示文摘This paper studies the asymptotic behavior of solutions to an evolutionary Ginzburg-Landau equation in 3 dimensions. It is shown that the motion of the Ginzburg-Landau vortex curves is the flow by its curvature. Away from the vortices, the author uses some measure theoretic arguments used by F. H. Lin in [16] to show the strong convergence of solutions. | LIU ZUHAN Department of Mathematics, Normal College. Yangzhou University. Yangzhou 225002, China. E-mail: zuhanl@yahoo.com | 2002 | Chinese Annals of Mathematics,Series B2002,23,1: | 5 |
| 5 | 人FKBP12的基因克隆及其表达产物的生物活性显示文摘为获得具有生物学活性的 h FKBP1 2 ,筛选新型的促神经再生药物 .采用 RT- PCR、计算机辅助 p BV2 2 0中外源基因高效表达的数学模型预测方法及超滤截留纯化方法 ,从人 T淋巴白血病细胞系 Jurkat中成功扩增出 h FKBP1 2基因 .按照外源基因高效表达的数学模型 ,将其进行优化改构后 ,在 p BV2 2 0中实现了高效表达 ,表达量约 2 0 % .重组的包涵体蛋白经复性 ,纯化至电泳纯 ,纯化后的 h FKBP1 2显示出肽基脯氨基顺反异构酶活性 .表明原核表达的 h FKBP1 | 裴武红 胡美茹 李伍举 沈倍奋 李松 yahoo.com | 2000 | 中国生物化学与分子生物学报2000,16,3: | 4 |
| 6 | 进入21世纪的英国学术资格框架显示文摘英国在1997年成立了新的高等教育质量保证机构 QAA。QAA 和高校一起开发了一整套新的综合质量保证体系。替代了原来分散多头的体系;同时制订了一系列的标准和规则,使质量保证有了统一的准绳。目前这一新的质量保证办法正在全英国逐步推行。《英格兰、威尔士和北爱尔兰高等教育资格框架》就是上述 QAA 系列文件之一。 | 毕家驹 yahoo.com) | 2002 | 中国高等教育评估2002,,2: | 4 |
| 7 | Ecological rebuilding and land reclamation in surface mines in Shanxi Province, China显示文摘It is well known that the mining industry produces a large amount of derelict land, and causes pollution of water loss and soil erosion as well as other environmental damage in China. As land is under pressure in China, it is now policy to restore or reclaim land despoiled by mining, the aim being to develop sustainable and healthy arable land ecosystems. This paper outlines the principles and approaches of ecological restoration, which have been adopted in Shanxi Province with reference to three typical surface mines. In the research, the principles of ecological engineering and ecological succession are considered as the critical theories of ecological restoration in mine degraded land. Meanwhile, the paper made a comparative research on main links of ecological rebuilding in three surface mines in Shanxi Province, which include new land construction, treatment of toxic substances, control of soil erosion, fertility management, irrigation, ecological planning and the establishment of legislation systems. As the research demonstrated, for successful restoration, new land construction is the fundamental framework, but it must be integrated with ecological engineering including ecological planning, the control of soil erosion and vegetation establishment and ecosystem creation in order to optimise land productivity and soil fertility. In addition, the establishment of the legislation systems and organization of administration are also indispensable aspects of ecological rebuilding in mined land. | MIAO Ze wei 1, BAI Zhong ke 2, GAO Lin 1 (1. Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China E\|mail: miaozewei@yahoo.com 2. Department of Soil Science, Shanxi Agricultural University Taigu, 03 | 2000 | Journal of Environmental Sciences2000,12,4: | 3 |
| 8 | Preparation and Properties of Some Chemical and Electrochemical γ-MnO_2显示文摘Chemically prepared electrolytic 2-Mn02 and an electrodeposited MnO2 doped with Ce(Ⅲ) were subjected to physicochemical studies. X-ray diffractometry, density measurements, chem-ical analysis and thermal analysis were used to determine the structure and chemical disorder present. The samples prepared chemically (CMD) or electrochemically (EMD) showed a variable amount of de Wolff disorder (Pr) and microtwinning (Tw). Manganese dioxide prepared in the presence of Ce(Ⅲ) showed appreciable decrease in de Wolff defect and a large amount of microtwinning. Thermal analysis showed a loss of weight due to the physically adsorbed and the structural (OH) water, from which the activation energy was calculated. Chemical composition and formulae calculated on the bases of cation vacancy model, cleared that Ce(lIl)-doped sample has a remarkable increase in the vacancies population associated with higher structural water content. This leads to lower activation energy of water release, and consequently it is supposed to acquire higher electrochemical activity. | H.M.Abbas, Kh. S.Abou-El-Sherbini, M.H.Askar and A. M. Hashim Dept.of Physical Centre, National Research Centre, Tahiu, Dokki, Cairo, Egypt E-mail: sherbini@yahoo.com | 2001 | Journal of Materials Science & Technology2001,17,3: | 1 |
| 9 | Probing proton halo of the exotic nucleus ^(28)S by elastic electron scattering显示文摘Elastic electron scattering on the exotic light nucleus 28S is investigated in the plane wave Born approximation. The variation of the squared form factors of 28S with momentum transfer is compared with that of 32S. It is found that the behavior of the form factors near the second minimum (with a moderate momentum transfer) is sensitive to the alteration of the charge density distribution of halo protons in 28S. This indicates that elastic electron scattering can be a good probe of the structure of proton-halo nuclei. | WANG Zaijun1 & REN Zhongzhou1’2 1. Department of Physics, Nanjing University, Nanjing 210008, China 2. Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator at Lanzhou, Lanzhou 730000, China Correspondence should be addressed to Ren Zhongzhou (email: zren@nju.edu.cn zren99@yahoo.com) Received June 16, 2003 | 2004 | Science China(Physics,Mechanics & Astronomy)2004,47,1: | 1 |
| 10 | Dynamic Gain Equalizer Based on the H-PDLC Volume Phase Grating显示文摘The structure and Bragg diffraction characteristics of volume phase gratings based on H-PDLC technology are presented, and the principles and simulation aided design of dynamic gain equalizers with the gratings are discussed. | Lingbing Bu, Guotu Shen, Jiguang Cai, Baocheng Yang, Jihong Zheng, Lingjuan Gu, Songlin Zhuang (Key laboratory for Optical and Magnetic Resonance Spectroscopy, East China Normal University, Shanghai 200062,P. R. China, Tel: 86-21-62232773, E-mail: shenguoru@mail.ecnu.edu.cn) (College of Optics and Electronics Engineering, University of Shanghai for Science and Technology, P. R. China, Tel:86-21-65038636, E-mail: slzhuang@yahoo.com)(Dare Technologies, Inc., 48521 Warm Springs Blvd. Ste. 308, Fremont, CA 94539, USA, Tel: 01-510-413-0055, Fax:01-510-413-0051, E-mail: byang@usdare.com) | 2003 | 光学学报2003,23,S1: | 0 |
| 11 | 三大门户网站财务报告述评显示文摘企业的战略发展复杂万端,但是财务报告则是检验企业基本面通行的标准。三大门户网站2000年第三季度的财务报告显示各网站的营业收入增长已经放慢,到了第四季,新浪和网易的营业收入增长进一步放缓,其中新浪的增长率从24.3%回落至6.6%,网易则从47.0%降至24.3%。唯有搜狐营业收入获得较高的增长,从20.5%提高至36%。 | 吕伟钢 yahoo.com | 2001 | 多媒体世界2001,,5: | 0 |