检索结果-南通市图书馆

沈阳药科大学学报 2008年第S1期25卷 67-67页

作者： JI Yu-bin1,2.3.ZHANG He1,JI Chen-feng1,2.3.LIU Hong-juan1(1.center of Research and Development on Life {3. and Environmental {3.,Harbin University of Commerce,Harbin 150076,china 2.institute of Materia Medica and Postdoctoral Programme of Harbin University of Commerce,Harbin 150076,china 3.Engineering Research center of Natural Anticancer Drugs,Ministry of Education,Harbin 150076,china)

Apoptosis,also known as programmed cell death,is the removal of damaged body organizations,aging or redundant cells in a suicide,has to maintain the health of the body,the normal development of the nervous system,the immune system to maintain the normal function of such areas is of great *** morphological characteristics of apoptosis are the cytoplasm concentrated,condensed nuclear chromatin,DNA fragments of a large-scale,the cell membrane invagination and foam formation of apoptotic *** are two classic apoptosis ways which are generally accepted by majority of the scholars currently:Mitochondrial pathway and Death receptor *** membrane is a two-tier structure surrounded the cystic,between the external cavity and internal cavity which is called the Room,surrounded by the internal cavity known as the mitochondria internal room or mitochondrial *** with the functions of control cell survival and death:mitochondria play an important role in physiological such as oxidative phosphorylation,electronic transfer,storage Ca2.,energy metabolism,anti-oxidation activity and so on,to provide the basic energy to the various activities of cell *** found that mitochondria contain some of the material is closely related to apoptosis,such as Cyt-C,Smac/Diablo,AIF,Ca2.,ROS and so *** the signal to stimulate apoptosis,mitochondrial membrane permeability,resulting in a series of key changes,including Cyt-C,Smac/Diablo release,decline of the mitochondrial membrane potential(ψm),the state of the redox within cells,the intervention of Bcl gene family and so *** signal transduction ultimately focuses on the mitochondria to activate or inhibit these incidents,then the corresponding signal transduction to control ***,the mitochondria in the incidence of apoptosis play an important *** recent years,the study confirmed that apoptosis imbalance can cause a variety of human *** there is a close

关键词： apoptosis mitochondria

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

光散射谱作为研究半导体材料的探针

引用

物理学进展 1989年第2期9卷 228-240页

作者： J.F.Scott 张明生 condensed matter Laboratory Department of PhysicsUniversity of Colorado 南京大学现现代分析中心和固体微结构实验室

本文讨论了半导体材料激发的光散射谱,主要包括传导电子和空穴的单粒子跃迁;具有各种施主态和受主态的束缚电子和空穴的跃迁;杂质和缺陷的局域化振动和电子振动跃迁以及诸如等离子体子散射的集体激发。

关键词：光散射谱半导体材料

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Polychlorinated Biphenyls in Global Air and Soil:New concept for fractionation effect

Polychlorinated Biphenyls in Global Air and Soil:New concept...

引用

持久性有机污染物论坛2.08暨第三届持久性有机污染物全国学术研讨会

作者： Yi-Fan Li~(1,2. Liyan Liu~2.Zhi Zhang~(2.3. Hongliang Jia~3.Tom Harner~1 Ed Sverko~(1,4) (1 Science and Technology Branch,Environment Canada 2.International Joint Research center for Persistent Toxic Substances (IJRC-PTS),State Key Laboratory of Urban Water Resource and Environment,Harbin institute of Technology,{2. 3.IJRC-PTS,Dalian Maritime University,Dalian,{2. 4 RC-PTS,McMaster University,Hamilton,Canada

*** Rappe suggested deposition of pesticides is enhanced by cold *** pointed out in 1973.1) that after used in warm climates,pesticides will evaporated and transported to cool areas where they will be condensed,and re...

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

FABRICATION AND PROPERTIES OF SIC NANOTIP ARRAYS

FABRICATION AND PROPERTIES OF SIC NANOTIP ARRAYS

引用

第8届国际材联电子材料国际研讨会

作者： Kuei-Hsien Chen, Jih Shang Hwang, Hong Chun Lo, Debajyoti Das, Li-Chyong Chen institute of Atomic and Molecular sciences, Academia Sinica, Taipei, Taiwan {2. for {3. matter sciences, National Taiwan University, Taipei, Taiwan

Fabrication of SiC nanotip arrays of a few microns in height and around 1 nm in diameter at the tip and of density as high as 10 cm is *** mechanism of the formation process and detailed structure analysis using high resolution TEM were presented. It is concluded that the tips are primarily composed of *** nanotip arrays showed magnificent field emission property with typical field emission current of

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

渡越辐射的研究

引用

物理学进展 1989年第2期9卷 188-212页

作者：屈卫星徐至展中国科学院上海光学精密机械研究所中国高等科学技术中心凝聚态和辐射物理分中心

本文对渡越辐射的理论、实验及其应用等方面的情况做了较详细的综述;分析了影响渡越辐射强度的一些不利因素;对进一步改善渡越辐射的质量,提高渡越辐射强度等问题进行了讨论。

关键词：渡越辐射电动力学电磁辐射

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Relativistic quantum effects of Dirac particles simulated by ultracold atoms

引用

Frontiers of physics 2012年第1期7卷 31-53页

作者： Dan-wei Zhang 张丹伟 (1) (2. Zi-dan Wang 汪子丹 (2. Shi-liang Zhu 朱诗亮 (1) 1. Laboratory of Quantum Information Technology School of Physics & Telecommunication Engineering South China Normal University Guangzhou 510006 China2. Department of Physics and Center of Theoretical and Computational Physics The University of Hong Kong Pokfulam Road Hong Kong China

Quantum simulation is a powerful tool to study a variety of problems in physics, ranging from high-energy physics to {2.-{3. physics. In this article, we review the recent theoretical and experimental progress in quantum simulation of Dirac equation with tunable parameters by using ultracold neutral atoms trapped in optical lattices or subject to light-induced synthetic gauge fields. The effective theories for the quasiparticles become relativistic under certain conditions in these systems, making them ideal platforms for studying the exotic relativistic effects. We focus on the realization of one, two, and three dimensional Dirac equations as well as the detection of some relativistic effects, including particularly the well-known Zitterbewegung effect and Klein tunneling. The realization of quantum anomalous Hall effects is also briefly discussed.

关键词： ultracold atoms Dirac equation quantum simulation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

液氮温区超导体的发现

引用

科学 1988年第1期 3-6页

作者：赵忠贤中国科学院物理研究所

在发现液氮温区超导体的世界性研究热中,中国科学院物理研究所的研究人员作了出色的工作,受到世人瞩目,主要研究者赵忠贤因此荣获第三世界科学奖。喜庆之时,人们也期待着中国的超导研究继续保持先进水平。

关键词：超导体液氮温区探索工作中国科学院物理研究所中科院物理研究所金属材料超导材料临界电流超导研究

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Growth Inhibition, Induction of Apoptosis by Green Tea Constituent (-)-Epigallocatechin-3.gallate in Cultured Rabbit Lens Epithelial Cells

引用

眼科学报 2000年第3期16卷 194-198页

作者： Wenyong Huang, Shaozhen Li, Junwen Zeng, Yizhi Liu, Mingxing Wu, Ming ZhangZhongshan Ophthalmic center, Sun Yat-sen University of Medical sciences, Guangzhou 510060,{2. Zhongshan Ophthalmic center Sun Yat-sen University of Medical Sciences Guangzhou 510060 China

Purpose: To evaluate effect of green tea extract (-)-Epigallocatechin-3.gallate (EGCG) in cultured rabbit lens epithelial cells in order to pave a new way to postcapsular opacity (PCO) ***: Cell survival rate was measured by 3.(4, 5-dimethylthiazol-2.yl)-2. 5-diphenyl tetrazolium bromide (MTT) coloimetric assay. Cell apoptosis was detected by electron microscopy, Hochest 3.2.8 stain and flow cytometer. DNA fragment was detected using agarose gel ***: Proliferation of the cultured rabbit lens epithelia cells was inhibited by EGCG in a dose and time dependent manner. Morphologic study showed that the cells became shrunk, round shaped with their nuclei {3. and broken. Apoptotic bodies were also seen under electron microscope and in Hochest 3.2.8 stain assay 2. hours after EGCG was added to the medium. DNA ladders were shown in agarose gel eletrophoresis. In flow cytometry assay, apoptosis peak was also ***: Green Tea Constituent(-)

关键词：晶体上皮细胞生长抑制剂EGCG 上睑下垂

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Finite element simulation of stretch forging using a mesh condensation method

引用

Science china(Technological sciences) 2010年第1期53卷 227-234页

作者： CHEN Wen & CUI ZhenShan National Die & Mold CAD Engineering Research center,Shanghai Jiao Tong University,Shanghai 2.003.,china National Die & Mold CAD Engineering Research center Shanghai Jiao Tong University Shanghai China

In order to reduce the computation time of finite element simulations of stretch forging process,a mesh condensation method is presented and applied to a three-dimensional rigid-viscoplastic finite element *** this method,a conventional mesh for the whole zone of a workpiece is condensed to a computational mesh for the active deformation *** vital problems are solved,which are automatic construction of the computational mesh and treatment of interfaces between the deformation zone and the rigid *** mesh condensation method is compared with conventional finite element method by simulations of a six-bite stretch forging *** simulation results including forging load,temperature distribution and effective strain distribution are *** efficiency and accuracy of this method are verified.

关键词： mesh condensation method finite element method stretch forging incremental forging

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Superconductivity of topological matters induced via pressure

引用

Frontiers of physics 2012年第2期7卷 193-199页

作者： Jun-liang Zhang (1) (2. Si-jia Zhang (1) Hong-ming Weng (1) Wei Zhang (1) Liu-xiang Yang (1) Qing-qing Liu (1) Pan-pan Kong (1) Jie Zhu (1) Shao-min Feng (1) Xian-cheng Wang (1) Ri-cheng Yu (1) Lie-zhao Cao (2. Shoucheng Zhang (3. (4) Xi Dai (1) Zhong Fang (1) Chang-qing Jin (1) 1. Beijing National Laboratory for condensed matter {2. &{3. Chinese Academy of Sciences Beijing 100190 China2. Department of Physics University of Science & Technology of China Hefei 230026 China3. Department of Physics McCullough Building Stanford University Stanford CA 94305-4045 USA4. Center for Advanced Study Tsinghua University Beijing 100084 China

By applying pressure on the topological insulator Bi2.e3.single crystal, superconducting phase was found without a crystal structure phase transition. The new superconducting phase is under the pressure range of 3.GPa to 6 GPa. The high pressure Hall effect measurements indicated that the superconductivity caused by bulk hole pockets. The high pressure structure investigations with synchrotron X-ray diffraction indicated that the superconducting phase is of similar structure to that of ambient phase structure with only slight change with lattice parameter and internal atomic position. The topological band structures indicate the superconducting phase under high pressure remained topologically nontrivial. The results suggested that topological superconductivity can be realized in Bi2.e3.due to the proximity effect between superconducting bulk states and Dirac- type surface states. We also discussed the possibility that the bulk state could be a topological superconductor.

关键词： topological insulator high pressure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：