检索结果-南通市图书馆

Polymorphisms of three gene-derived STS on pig chromosome 13q41 are associated with susceptibility to enterotoxigenic Escherichia coli F4ab/ac in pigs

引用

science china(Life sciences) 2008年第7期51卷 614-619页

作者： HUANG Xiang 1 ,REN Jun 1 ,YAN XueMing 1,2 ,PENG QiuLing 1 ,TANG Huan 1 ,ZHANG Bo 1 ,JI HuaYuan 1 , YANG ShuJin1&HUANG LuSheng 1 1Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of china,Jiangxi Agricultural university, nanchang 330045,china 2department of biology,nanchang university of science and technology,nanchang 3.003.,china 1. Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of china Jiangxi Agricultural University Nanchang 330045 China 2. department of biology Nanchang University of Science and Technology Nanchang 330038 China

Neonatal diarrhea caused by enterotoxigenic Escherichia coli(ETEC)F4 is a common and serious disease,resulting in significant economical loss in the pig *** locus encoding ETEC F4 receptor has been mapped to pig chromosome(SSC)13q41,and one of the most significantly linked markers is *** this study,we selected three genes including SLC12A8,MYLK and KPNA1 from a chromosomal region flanking S0075 on SSC13 to develop pig specific sequence tagged sites(STS). Seven single nucleotide polymorphisms were identified in the three pig STS using DNA of four full-sib susceptible and resistant animals in a White Duroc×Erhualian *** grandparents,parents and 755 offspring in the intercross were genotyped for three polymorphisms,including SLC12A8 g.159A>G,MYLK g.1673A>G and KPNA1 g.306A>***-based transmission disequilibrium test(TDT) revealed that all polymorphisms and the corresponding haplotypes are significantly associated with ETEC F4ab/ac(especially F4ac)brush border adhesion phenotypes,indicating that these polymor- phism are in linkage disequlibrium with causal mutation(s)of the gene encoding ETEC F4ab/ac receptor. Our results strengthen the evidence for the involvement of SSC13q41 in high acquiring risk of ETEC F4ab/ac infection,and provide novel polymorphic markers for fine mapping of the ETEC F4ab/ac receptor locus.

关键词： pig SSC13q41 sequence tagged sites(STS) Escherichia coli(ETEC)F4ab/ac susceptibility

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

Stabilization for discrete-time fuzzy systems with Takagi-Sugeno's models:reduce the complexity

引用

science china(Information sciences) 2010年第12期53卷 2506-2513页

作者： WANG LiKui 1 & LIU XiaoDong 2 1 School of Mathematics and Information science,nanchang Hangkong university,nanchang 330063,china 2 Research Center of Information and Control,Dalian university of technology,Dalian 116024,china 1. School of Mathematics and Information science Nanchang Hangkong University Nanchang 330063 China2. Research Center of Information and Control Dalian University of Technology Dalian 116024 China

The problem of sate feedback control for discrete-time fuzzy systems with Takagi-Sugeno's models is investigated to reduce the computational burden.A stabilization condition is obtained by applying a new Lyapunov *** is shown that our new theorem is equivalent to an existing result in guaranteeing the stability of the fuzzy system but consumes less computational time than the *** effectiveness and the superiority of the proposed design approach are demonstrated by an example borrowed from the literature.

关键词： Takagi-Sugeno’s fuzzy model non-quadratic Lyapunov function linear matrix inequality

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

Empirical study on entropy models of cellular manufacturing systems

引用

Progress in Natural science:Materials International 2009年第3期19卷 389-395页

作者： Zhifeng Zhang a,b,*, Renbin Xiao a a CAD Center, Huazhong university of science and technology, Wuhan 430074, china b Economics and Management School of nanchang, Hangkong university, nanchang 330063, china [a]CAD Center Huazhong University of Science and Technology Wuhan 430074 China [b]Economics and Management School of Nanchang Hangkong University Nanchang 330063 China

From the theoretical point of view, the states of manufacturing resources can be monitored and assessed through the amount of infor- mation needed to describe their technological structure and operational state. The amount of information needed to describe cellular manufacturing systems is investigated by two measures: the structural entropy and the operational entropy. Based on the Shannon entropy, the models of the structural entropy and the operational entropy of cellular manufacturing systems are developed, and the cog- nizance of the states of manufacturing resources is also illustrated. Scheduling is introduced to measure the entropy models of cellular manufacturing systems, and the feasible concepts of maximum schedule horizon and schedule adherence are advanced to quantitatively evaluate the effectiveness of schedules. Finally, an example is used to demonstrate the validity of the proposed methodology.

关键词： Cellular manufacturing systems Structural entropy Operational entropy Scheduling

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

Synthesis of vertically aligned carbon nanotube arrays on silicon substrates

引用

science china(Technological sciences) 2004年第5期47卷 616-624页

作者： ZHENG Ruiting1, CHENG Guoan1, PENG Yibin1, 2, ZHAO Yong1, 3, LIU Huaping1 & LIANG Changlin1 1. Key Laboratory of Radiation Beam technology and Materials Modification of Ministry of Education, department of Materials science and Engineering, Beijing Normal university, Beijing 100875, china 2. School of science, Civil Aviation university of china, Tianjin 300300, china 3. department of Physics, nanchang university, nanchang 330047, china Correspondence should be addressed to Zheng Ruiting 1. Key Laboratory of Radiation Beam technology and Materials Modification of Ministry of Education Department of Materials Science and Engineering Beijing Normal University 100875 Beijing China 2. School of science Civil Aviation University of China 300300 Tianjin China 3. department of Physics Nanchang University 330047 Nanchang China

The growth of well-aligned carbon nanotube (CNT) arrays using a heat chemical vapor deposition system on silicon substrates is reported. The growth properties of CNT arrays are studied as a function of synthesis conditions. It is found that 750°C and 10 nm Fe film are suitable conditions for the growth of well-aligned CNT arrays. CNT arrays with a uniform diameter, thick tube wall and firm cohesion to the Si substrate can be grown for C2H2 concentration of 27%. Based on the experiment, the processes of improving the alignment of CNT arrays and cohesion between CNT arrays and Si substrates are discussed.

关键词： carbon nanotubes, vertically aligned, silicon substrate, chemical vapor deposition.

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

Antitumor Effect of a Novel Adeno-associated Virus Vector Targeting to Telomerase Activity in Tumor Cells

引用

Acta Biochimica et Biophysica Sinica 2004年第7期36卷 492-500页

作者： Yi-Gang WANG1,2#, Jin-Hui WANG1#, Yan-Hong ZHANG1, Qing GU2*, and Xin-Yuan LIU1* 1Institute of Biochemistry and Cell biology, Shanghai Institutes for Biological sciences, Chinese Academy of sciences, Graduate School of the Chinese Academy of sciences, Shanghai 200031, china School of Life science, nanchang university, nanchang 330047, china Institute of Biochemistry and Cell biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences Shanghai 200031 China

Telomerase activity is a wide tumor marker. Human telomerase reverse transcriptase (hTERT), the catalytic subunit of the telomerase, is transcriptionally upregulated exclusively in about 90% of cancer cells. In this study, we constructed a novel adeno-associated virus (AAV) vector containing the human interferon-β (hIFN-β) gene under the control of hTERT promoter (AAV-hTERT-hIFN-β) and investigated its antitumor effect against various human cancer cells in vitro. AAV-hTERT-hIFN-β displayed cancer-specific hIFN-β expression and cytotoxicity. The cytotoxic ratio was positively correlated with the time length of infection. AAV-hTERT-hIFN-β-mediated apoptotic morphology was observed by transmission electron microscopy. Flow cytometry assay also revealed that the cytotoxicity of AAV-hTERT-hIFN-β was mainly an apoptotic process. These data indicate that AAV in combination with hTERT-mediated therapeutic gene expression may open new possibilities for long-lasting and targeting gene therapy of varieties of cancers.

关键词： adeno-associated virus (AAV) telomerase hTERT promoter human interferon-β cancer

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

Phosphorus forms and distribution in the sediments of Poyang Lake,china

引用

International Journal of Sediment Research 2011年第2期26卷 230-238页

作者： XIANG Su-lin and ZHOU Wen-bin 1 Lecturer,Key Lab of Poyang Lake Ecology and Bio-resource Utilization,Ministry of Education,nanchang university,nanchang 330047,china and department of Environmental Engineering,East china JiaoTong university,nanchang 330013,china, 2 Prof,Key Lab of Poyang Lake Ecology and Bio-resource Utilization,Ministry of Education,nanchang university,nanchang 330047,china [a]Lecturer Key Lab of Poyang Lake Ecology and Bio-resource Utilization Ministry of Education Nanchang University Nanchang 330047 China and Department of Environmental Engineering East China JiaoTong University Nanchang 330013 China [b]Prof. Key Lab of Poyang Lake Ecology and Bio-resource Utilization Ministry of Education Nanchang University Nanchang 330047 China

The forms and distribution of phosphorus in the sediments of Poyang Lake were studied using chemical extraction methods to understand the potential release and adsorption of *** results showed that phosphorus in the sediments mainly consisted of inorganic phosphorous species, including iron bound phosphorus,calcium bound phosphorus,aluminium bound phosphorus and dissolved phosphorus,as well as organic phosphorous *** spatial distribution of phosphorus species in surface sediments showed a decreasing trend from the outlet to the entrance of Poyang *** content of total phosphorus in the surface sediments ranged from 688.29 to 825.36 mg/kg, and inorganic phosphorous was the major phosphorus *** bound phosphorus was the dominant form of inorganic phosphorous,accounting for greater than 40%of the total phosphorus, while calcium bound phosphorus and aluminium bound phosphorus accounted for more than 20%, and dissolved phosphorus accounted for less than 5%.The content of organic phosphorus in surface sediments was lower,accounting for less than 15%.Total phosphorus was positively correlated with iron bound phosphorus,aluminium bound phosphorus,calcium bound phosphorus and organic phosphorous,while organic phosphorous was positively correlated with iron bound phosphorus and aluminium bound phosphorus,but only weakly related to calcium bound *** all six sites, the contents of total phosphorus and phosphorus forms in the core sediments obviously decreased with depth,while they were significantly enriched in the surface *** total phosphorus and phosphorus forms contents were significantly higher in the upper layers and had a tendency to decrease toward the bottom of the core,regardless of the phosphorus *** addition,the average contents of total phosphorus and various phosphorus forms decreased rapidly with sediment depth from 0-20 cm,and then decreased slightly from 20-30 cm.

关键词： Poyang Lake Phosphorus forms Distribution characteristics Sediment

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

A TWO-SCALE SECOND-ORDER MOMENT PARTICLE TURBULENCE MODEL FOR GAS-PARTICLE FLOW

引用

Journal of Hydrodynamics 2006年第6期18卷 659-665页

作者： ZENG Zhuo-xiong ZHOU Li-xing department of Engineering Mechanics Tsinghua University Beijing 100084 China department of Mechanical Engineering Nanchang Institute of Aeronautical Technology Nanchang 330034China

A two-scale second-order moment two-phase turbulence model was developed and used to simulate gas-particle flow in a sudden-expansion chamber and a channel. The simulation results were in agreement with the experimental results, and the results were compared with those of the single-scale second-order moment two-phase turbulence model. Several improved features show that the two-scale model is to a certain extent better than the single-scale model, which may be attributed to the fact that particle turbulence is well characterized by the two-scale turbulence model.

关键词： gas-particle flow second-order moment model,two-scale fluctuation

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

Cytocompatibility of Self-assembled Hydrogel from IKVAV-containing Peptide Amphiphile with Neural Stem Cells

引用

Journal of Wuhan university of technology(Materials science) 2009年第5期24卷 753-756页

作者：宋玉林 department of Orthopaedics the Second Affiliated Hospital of Nanchang University

Neural Stem Cells （NSCs） were incubated with self-assembled hydrogel from IKVAV-containing peptide amphiphile （IKVAV-PA） for one week. The cytocompatibility of hydrogel was evaluated. NSCs were seeded in three-dimensional （3D） hydrogels （Experimental Group, EG） or surface of coverslips （Control Group, CG）, double-labeled with Calcein-AM and PI. A growth curve of cells was obtained according to CCK-8. TEM study of hydrogel revealed a network of nanofibers. NSCs began to proliferate after 24 h of incubation, and formed bigger neurospheres at 48 h in EG than in CG. Cell proliferation activity was higher in EG than in CG （P〈0.05）. The self-assembled Hydrogel had good cytocompatibility and promoted the proliferation of NSCs.

关键词： IKVAV hydrogel cytocompatibility proliferation

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

Non-isothermal Melt Crystallization Kinetics of Anhydrite-Filled Polypropylene Composites

引用

Journal of Wuhan university of technology(Materials science) 2010年第1期25卷 12-19页

作者：王少会 department of Chemistry and Chemical Engineering East China JiaoTong University

The non-isothermal crystallization kinetics of polypropylene （PP）, PP/anhydrite composites were investigated by differential scanning calorimetry （DSC） with various cooling rates. The Avrami analysis modified by Jeziorny and a method developed by Mo were employed to describe the non-isothermal crystallization process of these samples. The difference in the exponent n between PP and PP/anhydrite composites indicated that non-isothermal kinetic crystallization corresponded to tri-dimensional growth with heterogeneous nucleation. The values of half-time, Zc and F（T） showed that the crystallization rate increased with the increasing of cooling rates for PP and PP/anhydrite composites, but the crystallization rate of PP/anhydrite composites was faster than that of PP at a given cooling rate. The method developed by Ozawa did not describe the non-isothermal crystallization process of PP very well. Moreover, the method proposed by Kissinger was used to evaluate the activation energy of the mentioned samples. The result showed that the activation energy of PP/anhydrite was greatly larger than that of PP.

关键词： polypropylene anhydrite composites non-isothermal crystallization kinetics

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

Effect of static magnetic field on activity of immobilized α-amylase

引用

Chinese science Bulletin 1997年第2期42卷 127-130页

作者： YAN Liushui, ZHU Yuanbao, HE-Shuang’e and CAO Zhixiang1 department of Chemical Engineering, nanchang Institute of Aeronautical technology, nanchang 3.003., china 2. department of Chemistry and Chemical Engineering, Hunan university, Changsha 410082, china department of Chemical Engineering Nanchang Institute of Aenwututical Techndogy Nanchang China department of Chemistry and Chemical Engineering Hunan University Changsha China

BIOLOGICAL effect of magnetic field is one of the three major subjects of contemporary biomagnetism, and is also the basis of applied biomagnetism. In order to explore magnetic biological effects, the influence of various sorts of magnetic field on many living systems as well as their different constructural levels has been extensively studied. However, only a few studies with in vitro enzyme have been reported, and few researches concerning the influence of magnetic field on immobilized enzyme reactions have been published. This note describes

关键词： static magnetic field immobilized α-amylase enzyme activity oscillatory behaviour.

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

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：