检索结果-南通市图书馆

30th International Symposium on Capillary Chromatography、4th GC×GC Symposium、16th national Symposium and Exhibition on Chromatography,i.e. 1st Dalian International Symposium and Exhibition on Chromatography

作者： Baba Y.~(1-5 *) 1.Department of Applied Chemistry Graduate School of Engineering Nagoya University 2.MEXT Innovative Research Center for Preventive Medical Engineering Nagoya University 3.Plasma Nanotechnology Research Center Nagoya University 4.Health technology Research Center national institute of advanced industrial science and technology (AlST) 5.institute for molecular science national institute for Natural sciences

＜正＞This lecture will describe the recent development of nanobiotechnologies based on the nanofabrication, molecular nanotechnoiogy,and nanomaterials for bioanalysis and biomedical *** technologies allow us to develop novel methods to analyze several biomolecules,including DNA,RNA,protein,peptide, polysaccharide,and *** of nano-pillar,which is 200 nm wide and 4000 nm tall,is successfully applicable to fast separation of DNA within 10-25 ***-ball,fabricated by molecular nanotechnology,of which diameter is 50 nm,is developed and successfully applied for fast separation of DNA fragments from 100 bp to 15 *** cellulose,which is 50 nm diameter biofiber,is found to be useful high sensitive detection of biomolecule based on the optical confined effect as well as fast analysis of *** nano-biodevice is extremely useful for fast separation of protein samples from several kDa to 200 kDa within 15 seconds. Utilizing this technique,complex protein mixture extracted from human T cell line,lymphoblastic Jurkat cells, were separated within 15s with high *** methods we have taken appear suitable for biomedical and clinical applications,including SNPs analysis,mutation analysis,haplotyping,DNA diagnosis,protein expression analysis,immunoassay,protein disease marker detection,point-of-care *** methods are also applicable to molecular imaging of cancer cell and possible photodynamic therapy of cancer.

关键词： Nanotechnoiogy Biodevice Protein DNA Cell

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

[Hmim]3PW12O40:A high-efficient and green catalyst for the acetalization of carbonyl compounds

引用

Chinese Chemical Letters 2010年第6期21卷 678-681页

作者： Yan Dai~a,Bin Dong Li~a,Heng Dao Quan~b,Chun Xu Lü~(a,*) a School of Chemical Engineering,Nanjing University of science and technology,Nanjing 210094,China b national institute of advanced industrial science and technology,Ibaraki 3058565,Japan School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 China national institute of advanced industrial science and technology Ibaraki 3058565 Japan

[Hmim]PWOwas developed and used in the acetalization of carbonyl compounds in excellent *** ionic liquidheteropoly acid hybrid compound and reaction medium formed temperature-dependent phase-separation system with the ease of product as well as catalyst *** catalyst was recycled more than 10 times without any apparent loss of catalytic activity.

关键词： [Hmim]3PW12O40 Phosphotungstic acid Carbonyl compounds Acetalization Ionic liquid

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

Superplasticity in an Aluminum Alloy 6061/Al_2O_3p Composite

引用

Journal of Materials science & technology 2001年第6期17卷 653-656页

作者： Lihong HAN, Jitai NIU and Darning JIANG The national Key Laboratory of advanced Welding Production technology, Harbin institute of technology, Harbin 150001, China Tsunernichi Imai national industrial Research Harbin Inst. of Technol. Harbin 150001 China

The superplasticity of an Al203p/6061Al composite, fabricated by powder metallurgy techniques, has been investigated. Instead of any special thermomechanical processing or hot rolling, simple hot extrusion has been employed to obtain a fine grained structure before superplastic testing. Superplastic tensile tests were performed at strain rates ranging from 10-2 to 10-4 s-1 and at temperatures from 833 to 893 K. A maximum elongation of 200% was achieved at a temperature of 853 K and an initial strain rate of 1.67×103 s-1. The highest value obtained for the strain rate sensitivity index (in) was 0.32. Differential scanning calorimeter was used to ascertain the possibility of any partial melting in the vicinity of optimum superplastic temperature. These results suggested that no liquid phase existed where maximum elongation was achieved and deformation took place entirely in the solid state.

关键词： Al Superplasticity in an Aluminum Alloy 6061/Al2O3p Composite rate high DSC Figure

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

Sliding Mode Control Design for a Class of Systems with Mismatched Uncertainties

引用

自动化学报 2005年第5期31卷 136-140页

作者： XIANG Ji SU Hong-Ye CHU Jian (national Laboratory of industrial Control technology,institute of advanced Process Control,Zhejiang University,Yuquan Campus,Hangzhou 310027) institute of advanced Process Control Zhejiang University Yuquan Campus National Laboratory of Industrial Control Technology 浙江 Hangzhou 310027

A new sliding mode controller design method is proposed for a class of system with mis- matched uncertainties such that the dynamic function restricted on the sliding surface is completely insensitive to the uncertainties.A sufficient and necessary condition which the system possessing this sliding mode controller should satisfy is explicitly *** issue of chattering free is also *** is concluded that this class of mismatched term does not bring any chattering problem. Finally,a numerical example illustrates the developed method.

关键词： Sliding mode control(SMC) uncertain system mismatched uncertainty

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

Effects of Cu^(2+) on characteristic of SV currents

引用

science China Chemistry 2006年第6期49卷 560-564页

作者： ZHANG Liping1,2 & YANG Pin1 1. Key Laboratory of Chemical Biology and molecular Engineering of Ministry of Education, institute of molecular science, Shanxi University, Taiyuan 030006, China 2. institute of Environment science, Taiyuan University of science and technology, Taiyuan 030024, China Key Laboratory of Chemical Biology and molecular Engineering of Ministry of Education Institute of Molecular Science Shanxi University Taiyuan China institute of Environment science Taiyuan University of Science and Technology Taiyuan China

Applying the patch-clamp technique to vacuoles from Radish we studied the effects of Cu2+ on Slow Vacuolar (SV) current’s characteristic. Our results show that Cu2+ in bath solution at higher concentration inhibits SV currents and the percentage of inhibition increases with increasing concentration and changes with different voltage. When at lower concentration, Cu2+ significantly promotes the SV currents and the promotion ratio decrease with increasing voltage. At the same time, the time constants of activation become lesser after adding Cu2+. These results show that there may be some Cu2+ binding sites on SV channels and binding to which can change SV current’s characteristic.

关键词： the patch-clamp technique, vacuolar, Cu2+, SV channel.

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

Robust maximum-likelihood parameter estimation of stochastic state-space systems based on EM algorithm

引用

Progress in Natural science:Materials International 2007年第9期17卷 1095-1103页

作者： Zhong Lusheng(national Laboratory of industrial Control technology,institute of industrial Process Control,Zhejiang University,Hangzhou 310027,China) national Laboratory of industrial Control technology Institute of Industrial Process Control Zhejiang University Hangzhou 310027 China

This paper addresses the problems of parameter estimation of multivariable stationary stochastic systems on the basis of observed output *** main contribution is to employ the expectation-maximisation(EM)method as a means for computation of the maximum-likelihood(ML)parameter estimation of the *** form of the expectation of the studied system subjected to Gaussian distribution noise is derived and parameter choice that maximizes the expectation is also *** results in an iterative algorithm for parameter estimation and the robust algorithm implementation based on technique of QR-factorization and Cholesky factorization is also ***,algorithmic properties such as non-decreasing likelihood value,necessary and sufficient conditions for the algorithm to arrive at a local stationary parameter,the convergence rate and the factors affecting the convergence rate are *** study shows that the proposed algorithm has attractive properties such as numerical stability,and avoidance of difficult initial conditions.

关键词： parameter estimation system identification maximum likelihood(ML) stochastic state-space system EM algorithm

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

Liveness Problem of Petri Nets Supervisory Control Theory for Discrete Event Systems

引用

自动化学报 2005年第1期31卷 143-150页

作者： Hong-Ye SU Wei-Min WU Jian CHU (national Laboratory of industrial Control technology & institute of advanced Process Control, Zhejiang University, Hangzhou 310027 P.R.China) Zhejiang University National Laboratory of Industrial Control Technology & Institute of Advanced Process Control 浙江 Hangzhou 310027

A quite great progress of the supervisory control theory for discrete event systems (DES) has been made in the past nearly twenty years, and now, automata, formal language and Petri nets become the main research tools. This paper focus on the Petri nets based supervisory control theory of DES. Firstly, we review the research results in this field, and claim that there generally exists a problem in Petri nets based supervisory control theory of DES, that is, the deadlock caused by the controller introduced to enforce the given specification occurs in the closed-loop systems, especially the deadlock occurs in the closed-loop system in which the original plant is live. Finally, a possible research direction is presented for the solution of this problem.

关键词： Discrete event systems supervisory control Petri nets Hveness

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

P systems based multi-objective optimization algorithm

引用

Progress in Natural science:Materials International 2007年第4期17卷 458-465页

作者： Huang Liang, He Xiongxiong, Wang Ning and Xie Yi ( national Laboratory of industrial Control technology, institute of advanced Process Control, Zhejiang University, Hangzhou 310027, China Zhejiang University of technology, Hangzhou 310033, China) national Laboratory of industrial Control technology Institute of Advanced Process Control Zhejiang University Hangzhou 310027 China Zhejiang University of technology Hangzhou 310033 China

Based on P systems, this paper proposes a new multi-objective optimization algorithm (PMOA). Similar to P systems, PMOA has a cell-like structure. The structure is dynamic and its membranes merge and divide at different stages. The key rule of a membrane is the communication rule which is derived from P systems. Mutation rules are important for the algorithm, which has different ranges of mutation in different membranes. The cooperation of the two rules contributes to the diversity of the population, the conquest of the muhimodality of objective function and the convergence of algorithm. Moreover, the unique structure divides the whole population into several sub populations, which decreases the computational complexity. Almost a dozen popular algorithms are compared using several test problems. Simulation results illustrate that the PMOA has the best performance. Its solutions are closer to the true Pareto-optimal front

关键词： P systems evolutionary algorithm multi-objective optimization Pareto optimality.

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

Metal-amyloid-β peptide interactions: a preliminary investigation of molecular mechanisms for Alzheimer’s disease

引用

science China Chemistry 2007年第4期50卷 453-467页

作者： JIAO Yong & YANG Pin Key Laboratory of Chemical Biology and molecular Engineering of Ministry of Education, institute of molecular science, Shanxi University, Taiyuan 030006, China Key Laboratory of Chemical Biology and molecular Engineering of Ministry of Education Institute of Molecular Science Shanxi University Taiyuan China

Although humans have spent exactly 100 years combating Alzheimer’s disease (AD), the molecular mechanisms of AD remain unclear. Owing to the rapid growth of the oldest age groups of the popula-tion and the continuous increase of the incidence of AD, it has become one of the crucial problems to modern sciences. It would be impossible to prevent or reverse AD at the root without elucidating its molecular mechanisms. From the point of view of metal-amyloid-β peptide (Aβ) interactions, we review the molecular mechanisms of AD, mainly including Cu2+ and Zn2+ inducing the aggregation of Aβ, cata-lysing the production of active oxygen species from Aβ, as well as interacting with the ion-channel-like structures of Aβ. Moreover, the development of therapeutic drugs on the basis of metal-Aβ interactions is also briefly introduced. With the increasingly rapid progress of the molecular mechanisms of AD, we are now entering a new dawn that promises the delivery of revolutionary developments for the control of dementias.

关键词： Alzheimer’s disease (AD) amyloid-β peptide Cu2+ Zn2+ molecular mechanisms aggregation active oxygen species ion channel

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

Local Structure of Ge/Si(100) Self-Assembled Quantum Dots

引用

中国科学技术大学学报 2001年第3期31卷 282-288页

作者： Alexander V. Kolobov a) onleavefromA .F .IoffePhysico Technicalinstitute,StPetersburg,Russia (Joint Research Center for Atom technology national institute of advanced industrial science and technology, Tsukuba Central 4, 1 1 1 Higashi, Tsukuba 30

Local structure of uncapped and Si capped Ge quantum dots grown on Si(100) has been probed by X ray absorption fine structure spectroscopy. It is found that the uncapped Ge dots are partially oxidized and partially alloyed with Si. The amount of Ge present in the Ge phase is found to be about 20 30%. In the Si capped sample, Ge is found to be dissolved in silicon, the fraction of Ge atoms existing as pure Ge phase being not more than 10%.

关键词：自相似锗量子点局域结构 EXAFS XANES

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：