检索结果-南通市图书馆

Introduction to school of Environmental science and engineering of North China Electric Power University

2008年全国生物化学与分子生物学学术大会

作者： Zhi-juan Liang~1 Jing-shuang Huang~1 Di-qiang Li~2 Can-quan Mao~1 1 Laboratory of Biological Llibrary and Molecular Evolution,school of life science and engineering,Southwest Jiaotong University,Chengdu 610031 2 Institute of Forest Ecology and Protection,Chinese Academy of Forest sciences,Beijing 100091

Matrix metalloproteinases (MMPs),also called matrixins are a family of highly conserved zinc-dependent endopeptidases implicated in extracellular matrix(ECM) and basement membrane (BM) *** studies show that MMPs have ...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Electricity 2010年第2期21卷 50-51页

作者： Zhao Yi, Ma Shuangchen school of Environmental science and engineering, North China Electric Power University school of Environmental science and engineering North China Electric Power University

Along with the fast development of national economy, environmental issues have become more and more prominent. China has promulgated a series of policies of energy-saving and emission-reduction to

关键词： school Introduction to school of Environmental science and engineering of North China Electric Power University

在线全文

学校读者我要写书评

暂无评论

党参中有机酸的高效毛细管电泳法分析

同济大学学报（医学版） 2001年第5期22卷 15-17,32页

作者：邢凤琴朱恩圆詹慧清同济大学生命科学与医学工程研究院上海200092 中国药科大学中药学院生药学研究室南京210038

目的　用高效毛细管电泳法 ,对党参样品所含的活性成分中 4种有机酸类成分进行分离与测定。方法　采用高效毛细管区带电泳模式 ,二极管阵列检测器 ,在 2 0 9nm、2 5 4nm、30 8nm波长处进行定量测定。结果　最佳电泳条件为 :石英毛细管柱... 详细信息

目的　用高效毛细管电泳法 ,对党参样品所含的活性成分中 4种有机酸类成分进行分离与测定。方法　采用高效毛细管区带电泳模式 ,二极管阵列检测器 ,在 2 0 9nm、2 5 4nm、30 8nm波长处进行定量测定。结果　最佳电泳条件为 :石英毛细管柱 (5 0 μmI.D .× 45cm) ,缓冲溶液为 2 0 %乙腈、2 5mmol/L硼砂溶液 (pH =9.12 ) ;分离电压为 18kV ,温度 2 8℃ ;样品和标准品在 2 0min内得到基线分离。结论　本方法简单、快捷、灵敏 ,当严格控制实验过程中的每个环节时 ,可以得到良好的准确性和重现性。

关键词：党参有机酸高效毛细管电泳法

Posttranslational modulation on the biological activities of molecular chaperones

在线全文

学校读者我要写书评

暂无评论

science China(life sciences) 2009年第6期52卷 515-520页

作者： CHANG ZengYi Center for Protein science,school of life science,National Laboratory of Protein engineering and Plant Genetic engineering,Peking University,Beijing 100871,China Center for Protein science School of Life Science National Laboratory of Protein Engineering and Plant Genetic Engineering Peking University Beijing 100871 China

Molecular chaperones are a family of proteins that were first noticed to exist about 45 years ago from their increased transcription under heat shock *** a result,the regulation of their encoding genes has been subject to extensive *** studies revealed that the biological activities of molecular chaperones can also be effectively modulated at the protein *** ways of modulation so far elucidated include allosteric effect,covalent modification,protein-protein interaction,and con-formational alteration induced by such macro-environmental conditions as temperature and *** latter aspects were reviewed *** here is the importance of such immediate structural alterations that lead to an immediate activity increase,providing the immediate protection needed for the cells to survive the stress conditions.

关键词： molecular chaperone activity modulation sHsp Hsp60 Hsp70 Hsp90 Hsp100 HdeA DegP

在线全文

学校读者我要写书评

暂无评论

低频磁场对洋葱根的生物学效应

同济大学学报（医学版） 2002年第2期23卷 110-113页

作者：刘歆祝建钟季康郝伟强石红军张军同济大学生命科学与医学工程研究院上海200092 同济大学理学院物理系上海200092 同济大学医学院生物学教研室上海200331

目的　探讨低频磁场对洋葱根的生长与细胞分裂的影响 ,以及由于磁场与热的共同作用对植物根及根尖细胞所产生的生物学效应。方法　对生长发育过程中洋葱根进行低频磁场 (5 0Hz,3.84mT)处理 ,对根的外部形态、细胞有丝分裂指数以及染色... 详细信息

目的　探讨低频磁场对洋葱根的生长与细胞分裂的影响 ,以及由于磁场与热的共同作用对植物根及根尖细胞所产生的生物学效应。方法　对生长发育过程中洋葱根进行低频磁场 (5 0Hz,3.84mT)处理 ,对根的外部形态、细胞有丝分裂指数以及染色体形态等进行观察分析。结果　在相同磁场强度和不同温度条件下实验组与对照组的洋葱根的生长及根尖细胞都产生一些差异。结论　温度对洋葱根的生长有较大影响。而磁场与温度的叠加效应在一定范围内 (5 0Hz ,3.84mT ,30℃ )才对洋葱根的生长及根尖细胞的增殖产生重要作用。

关键词：洋葱根磁场热效应生物学效应

β-Sialon Produced by Carbon Thermal Nitriding Reaction of Bauxite

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2000年第3期14卷 209-213页

作者： Jun Wang, Nan Li, Caicheng Shi, Chengchang Jia ( Material science and engineering school, University of science and Technology Beijing, Beijing 100083, China Material science and engineering school, Wuhan University of science and Technology, Wuhan 430 Material science and engineering school University of Science and Technology Beijing Beijing 100083 China Material science and engineering school Wuhan University of Science and Technology Wuhan 430081 China

β-Sialon was produced by carbon thermal nitriding reaction in N_2 gas atmosphere when the mixtures of bauxite and anthracite were put into vertical furnace. According to the mass loss of raw materials and the result of X-ray diffration (XRD) of products, the influences of the process parameters on the compositions and relative contents of products, such as the fixed carbon content, the flow of N2, the soaking time and the temperature, were researched.

关键词： β-Sialon bauxite anthracite carbon thermal nitriding processing parameter vertical furnace

Optical applications of quantum dots in biological system

在线全文

学校读者我要写书评

暂无评论

science China Chemistry 2011年第8期54卷 1177-1184页

作者： WANG Wei & ZHU Jun-Jie State Key Laboratory of Analytical Chemistry for life science school of Chemistry and Chemical engineering, Nanjing University, Nanjing 210093, China 1. State Key Laboratory of Analytical Chemistry for life science school of Chemistry and Chemical engineering Nanjing University Nanjing 210093 China

This review presents a simple introduction on the unique properties and general synthesis of quantum dots (QDs) in which we lay emphasis on the optical applications in the biological system. The detection of biological molecules such as DNA, protein and enzyme, the cell-based analysis and in vivo animal imaging are mainly discussed.

关键词： quantum dots optical application biological system

Application of the annexation principle to the study of thermodynamic properties of ternary metallic melts In-Pb-Ag and In-Bi-Sb

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2002年第2期21卷 142-151页

作者： ZHANG JianMetallurgical engineering school.University of science and Technology Beijing, Beijing 100083, China Metallurgical engineering school University of Science and Technology Beijing 北京 100083

Based on the phase diagrams, measured activities an the annexationprinciple, the calculating models of mass action concentrations forin-Pb-Ag and In-Bi-Sb ternary metallic melts have been *** results of calculation both agree with practice, and obey the lawof mass action, showing that the models formulated can reflect thestructural reality of the corresponding melts and the annexationprinciple is applicable to the them.

关键词： activity mass action concnetration th annexation principle In-PB-Ag

Nonlinear Theory on Dynamic Controlling Interface Patterns DuringSolidification of a Dilute Binary Alloy

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 1999年第4期13卷 253-258页

作者： Zidong Wang Hanqi Hu(Material science and engineering school, University of science and Technology Beijing, Beijing 100083, China) Material science and engineering school University of Science and Technology Beijing Beijing 100083 China

In non-equilibrium nonlinear region, the nonlinear equations of time dependence of perturbation amplitude at the solid/liquidinterface during solidification of a dilute binary alloy are established on the base of assuming that there is local equilibrium at the solid/liquid interface and considering that curvature, temperature and composition at the solid/liquid interface which are related to the perturbation amplitude are nonlinear. As a result, patterns at the solid/liquid interface during solidification process, which is from nonsteadystate to steady state can be controlled by these nonlinear equations.

关键词： nonlinearity solidification, dilute binary alloy, dynamic control