检索结果-南通市图书馆

Pedosphere 2008年第1期18卷 102-112页

作者： WEI Ge-Hong YANG Xue-Ying ZHANG Zhi-Xin YANG Ya-Zhen K. LINDSROM Shaanxi Key Laboratory of Molecular Biology for Agriculture College of Life Science Northwest A＆F University Yangling Shaanxi 712100 （China） Department of Applied chemistry and Microbiology Biocenter 1 Fin-0014 University of Helsinki （Finland）

Thirty-nine rhizobial isolates were isolated from the root nodules of Glycyrrhiza uralensis and Glyeyrrhiza glabra, growing in the arid and semiarid regions of northwestern china, to test their taxonomic position and stress tolerance and to select one promising putative inoeulant strain for further studies. On the basis of 113 physiological and biochemical characteristics, the isolates were clustered into three groups. One isolate CCNWGX035 was found to have high tolerance to NaC1, pH, and temperature. By sequencing the 16S rDNA, isolate CCNWGX035 was placed in genus Mesorhizobium. Nodulation tests demonstrated that the isolate not only formed nitrogen-fixing nodules on its original host plant Glyeyrrhiza glabra, but also on Sophora vieiifolia, Lotus cornieulatus, Trifolium repens, Melilotus suaveolens, and Sophora alopecuroides. On the basis of sequence analysis of the nodA gene, isolate CCNWGX035 was closely related to strains of the genus Mesorhizobium, exhibiting some novel characteristics of root nodule bacteria.

关键词： Glycyrrhiza host range Mesorhizobium nodA stress tolerance

Mechanism and Modeling for Polymerization of Acrylamide in Inverse Microemulsions

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Engineering Sciences 2004年第2期 90-94页

作者： Li Xiao 1, Zhang Weiying 1, Yuan Huigen 2 (1. college of chemistry and Chemical Engineering, Fuzhou university, Fujian Fuzhou 350002 2. college of Material and Chemical Engineering, Zhejiang university, Zhejiang Hangzhou 310027)

After discussion on the mechanism of polymer particle nucleation and growth in inverse microemulsion polymerization, a schematic physical model for polymerization of acrylamide in inverse microemulsions was presented. Furthermore, several key problems in mathematically modeling of inverse microemulsion polymerization were pointed out.

关键词： inverse microemulsion polymerization mechanism modeling acrylamide

Creep mechanism of as-cast Mg-6Al-6Nd alloy

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Rare Metals 2010年第5期29卷 538-541页

作者： WU Yufeng DU Wenbo ZHANG Yinan WANG Zhaohui Institute of Recycling Economy Beijing University of Technology Beijing 100124 China college of Materials Science and Engineering Bei.l'ing University of Technology Beijing 100124 China

The creep mechanism of as-cast Mg-6A1-6Nd alloy was studied. The stress exponent for creep is 5.8 under the applied stresses of 50-70 MPa at 175℃. The activation energy for creep is 189 ***^-1 under the applied stress of 70 MPa in the range of 150-200℃. The true stress exponent and threshold stress for creep are calculated as 4.96 and 10.2 MPa, respectively. The true stress exponent indicates that its creep mechanism belongs to the dislocation climb-controlled creep, which is in agreement with the microstructure changes before and after creep. The high value for stress exponent is attributed to the interaction of Al11Nd3 phase with dislocations. The activation energy is more than the self-diffusion activation energy of Mg, which is attributed to the load transfer taking place from the matrix to Al11Nd3 phase during creep.

关键词： magnesium alloys creep creep resistance neodymium

荧光编码微球—流式细胞和生化分析技术及其最新发展

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生命科学仪器 2003年第1期1卷 31-36页

作者：牟颖金钦汉吉林大学分子酶学工程教育部重点实验室吉林大学化学学院分析科学研究所

简述了流式细胞术的发展历史和工作原理。对该技术与荧光编码微球技术相结合而发展起来的高通量细胞和生化分析技术及其最新发展作了评述。流式细胞术是一种对流动液体中排成单列的细胞逐个进行检测的技术通过检测得到相应细胞的光散... 详细信息

简述了流式细胞术的发展历史和工作原理。对该技术与荧光编码微球技术相结合而发展起来的高通量细胞和生化分析技术及其最新发展作了评述。流式细胞术是一种对流动液体中排成单列的细胞逐个进行检测的技术通过检测得到相应细胞的光散射和荧光信号进而测定细胞的大小、形状、DNA、RNA、表面受体、酶活性、膜通透性和钙流量等在癌症和爱滋病研究新药开发、干细胞和基因治疗、遗传学、家畜性别选择、农作物新品种开发等方面部有广泛应用。采用顺序进样技术,则可不必加压而实现少量样品的自动分析和作亚秒水平分子相互作用的动力学测量。将该技术与近年发展起来的荧光染料编码微球技术相结合,则成为一种可以与生物芯片技术相媲美的多组分同时分析技术。采用微流控芯片技术和发光半导体量子点编码微球技术进一步改善了方法的适用性,某些主要性能甚至超过了生物芯片技术,有望从研究实验室逐步进入临床实验室,最终进入病房和寻常百姓家成为防病、诊断和监护病人的重要手段。

关键词：流式细胞术荧光编码微球生化分析发光量子点微流控芯片

Analysis Algerian's Gallstones with Infrared Spectrum and Methods of Prevention and Treatment for Cholelithiasis in Algeria

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Wuhan university Journal of Natural Sciences 2002年第4期7卷 499-501页

作者： Li Zong shan 1, Dang Zi qin 1, Li Xang qun 1, Zeng Fan qing 2, Gu Ying hong 2, Niu Fei 2, Zhang Hu sheng 3, Hung Xiao Ling 4  1. School of Medicine, Wuhan university, Wuhan 430071, Hubei, china 2. college of chemistry and Molecular Sciences, Wuha university, Wuhan 430072, Hubei, china 3. School of Physics and Technology, Wuhan university, Wuhan 430072, Hubei, china 4. Zhongnan Hospital, Wuhan university, Wuhan 430071, Hubei, china Wuhan university School of Medicine Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***) Wuha university College of Chemistry and Molecular Sciences Wuhan Hubei China (GRID:grid.49470.3e) Wuhan university School of Physics and Technology Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***) Wuhan university Zhongnan Hospital Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***)

To analyze the type of Algerian’s gallstones and put forward relative measures of prevention and treatment, The NICOLET 170SX FT-IR spectrometer was used to measure the infra-red spectrum and analyze the feature of spectrum of Algerian’s gallstones. The results shown that Algerian have cholesterol gallstones. Reasons to form Algerian’s multiple cholesterol gallstones were investigated. We have put forward five suggestions to prevent and treat cholelithiasis.

关键词： Key words Algerian gallstone infra red spectrum prevention treatment

Consumption Rationality: Evaluation of Consumption in a“Economical Society”

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Social Sciences in china 2007年第1期 159-161页

作者： Liu Fusen, Professor, college of Philosophy and Sociology, jilin university Chen Si

Besieged with environmental crises and resource exhaustion, modern man is now left with but a single choice: to build an economical society. Human behavior is not determined by the species but is under the control of ... 详细信息

关键词： Evaluation of Consumption in a Consumption Rationality Economical Society

Determination of Omethoateby Cathodically SweepingOscillopolarography

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Wuhan university Journal of Natural Sciences 1998年第4期3卷 469-472页

作者： Wang Yu Sun Yuansi Huang Junhua Zhang Wuming Zhou Xingyao(college of chemistry, Wuhan university, Wuhan 430072,china) Wuhan university College of Chemistry Wuhan China (GRID:grid.49470.3e) (ISNI:***)

Determination of omethoate by cathodically sweeping oscillopolarography is described. The product of the alkaline hydrolysis exhibited a sensitive second derivative wave at ?0.50 V (vs. SCE) in a 1.0 ×10?5mol/L sodium dodecylbenzene sulfonate (SDBS)+0.1 mol/L HAc-NaAc (pH 4.0) buffer. The peak current was linearly proportional to the concentration of omethoate in the range from 6.4×10?7 to 5.1×10?5 mol/L. The detection limit is 2.0×10?7 mol/L with the relative standard derivation (RSD) of 3.5%. The hydrolysis procedure and the electrode reaction were studied by voltammetry.

关键词： omethoate alkaline hydrolysis oscillopolarography organophosphorous pesticide

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身分与法律义务、法律义务冲突

法制与社会发展 2006年第2期12卷 33-41页

作者：钱大军吉林大学理论法学研究中心吉林长春130012

身分是人们在法律上所居的地位,该种地位决定其在特定情况下的权利和义务。它与法律义务的产生、分配与运行存在不可分割的关联。因此从身分角度去认识和理解法律义务、法律义务冲突具有重要的意义。法律义务冲突实质上是义务人具有法... 详细信息

身分是人们在法律上所居的地位,该种地位决定其在特定情况下的权利和义务。它与法律义务的产生、分配与运行存在不可分割的关联。因此从身分角度去认识和理解法律义务、法律义务冲突具有重要的意义。法律义务冲突实质上是义务人具有法律意义上的身分之间存在无法取舍的困境。那么身分就可以为法律义务冲突的解决提供一定的信息。

关键词：法律义务身分角色法律义务冲突

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肝得安对小鼠实验性肝损伤的保护作用

时珍国医国药 2009年第7期20卷 1759-1761页

作者：洪铁杨振王智文郑友兰吉林大学药学院吉林农业大学中药材学院

目的研究肝得安对小鼠实验性肝损伤的保护作用。方法将60只小鼠随机分成6组(每组10只),分别是空白对照组,模型对照组和阳性药对照组、肝得安高(6g/kg)、中(3g/kg)、低(1.5g/kg)剂量组。结果肝得安可明显降低上述急性肝损伤模型小鼠血清... 详细信息

目的研究肝得安对小鼠实验性肝损伤的保护作用。方法将60只小鼠随机分成6组(每组10只),分别是空白对照组,模型对照组和阳性药对照组、肝得安高(6g/kg)、中(3g/kg)、低(1.5g/kg)剂量组。结果肝得安可明显降低上述急性肝损伤模型小鼠血清ALT、AST活性及肝组织中MDA的含量,同时增高肝SOD的活性,且能改善肝脏病理损伤。结论肝得安对小鼠实验性肝损伤具有保护作用。

关键词： D-氨基半乳糖四氯化碳白酒扑热息痛肝损伤

Evaluation of Decay Data for 175Hf

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中国核科技报告 1998年第S2期 168-171页

作者： Zhang Wei Zhou Zhiguo Huo Junde (Department of Physics, jilin university, changchun 13.023)

TheHf is an important radionuclide and its decay data are fundamental data in nuclear applications

关键词： Hf Evaluation of Decay Data for