检索结果-南通市图书馆

Progress in Natural Science:Materials International 2002年第9期 29-34页

作者： ZHOU Shulin, CAO Chengxi, QIAN Yitai, HE Youzhao, YANG Li, Qu Qishu and CHEN Wenkui(1. School of Life Science and Technology, Shanghai Jiaotong university, Shanghai 20003., China 2. department of Chemistry, university of Science and Technology of China, Hefei 23.026, China 3. Institute of Allergy Reserch, Wannan Medical College, Wuhu 241001, China) Institute of Allergy Reserch，Wannan Medical College，Wuhu 241001，China School of Life Science and Technology，Shanghai Jiaotong university，Shanghai 20003.，China department of Chemistry，university of Science and Technology of China，Hefei 23.026，China department of Chemistry，university of Science and Technology of China，Hefei 23.026，China

A moving chemical reaction boundary (MCRB) is formed by the weak alkali NH3.· H2O and strong acid HC1 with an excess of potassium chloride as background electrolyte. The experimental results are compared with the predictions in accordance with the moving chemical reaction boundary equation (MCRBE). If the MCRB is cathodic, the experimental results are in agreement with the predictions by the MCRBE. However, if the MCRB is anodic, the experimental results significantly deviate from the predictions of the MCRBE. A corrected MCRB equation is proposed for such conditions. The findings are evidently different from those in our early reports (J. Chromatogr. A, 891 (2000): 3.7-3.7; 907 (2001): 3.7-3.2; 922 (2001) 283.3.3.. This study is of obvious benefit to capillary electrophoresis and isoelectric focusing.

关键词： electromigration isoelectric focusing moving boundary system moving chemical reaction boundary.

Engineering Strategies on Flood Control in Middle Reach of Yangtze River, China

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of earth Science 2000年第3期19卷 99-102页

作者： Li Chang’an Yin Hongfu Zhang Yufen Gu Yansheng Faculty of earth sciences, China university of Geosciences, Wuhan 43.074, China

Flood disaster has been a serious hidden danger since the ancient time. The essential cause for the fact that floods have not been eliminated for hundreds of years is that time honored strategies do not suit the cases of flood prevention. In the view of geological environmental analyses of flood formation and from the synthesis of experiences gained in flood control in the past hundreds of years, sluggish draining of flood, silt sedimentation in channel and building levee blindly constitute the main cause of intractable flood for a long time in the middle reach of the Yangtze River. Draining away silt and water is the only way to stamping out flood disaster. Opening up artificial waterways for flood diversion, draining away the silt of channel into the polders, and storing the flood water are important engineering measures for the flood control and damage reduction.

关键词： the middle reach of Yangtze River flood disaster opening artificial waterways for flood diversion draining away the silt of channel into the embarked lowlands storing flood water.

The G Class of Functions and Its Applications

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2000年第3期16卷 455-468页

作者： Shenghong Li department of Mathematics,Zhejiang university,Hangzhou,3.0027,P.R.ChinaXiangao Liu department of Mathematics,Fudan university,Shanghai,20043.,P.R.China department of Mathematics Zhejiang University Hangzhou 310027 P. R. China department of Mathematics Fudan University Shanghai 200433 P. R. China

In this paper,we introduce the concept of the G class of functions of the parabolic class, and show the Hlder continuity of the G class of *** introduction *** concept contributes to the proof of the regularity and ex... 详细信息

关键词： Parabolic equation Regularity and existence G class of functions

An Object Extraction Model Using Association Rules and Dependence Analysis

在线全文

学校读者我要写书评

暂无评论

Wuhan university Journal of Natural sciences 2001年第Z1期6卷 405-409页

作者： Li Shen zhi 1, Chen Zhen qiang 1, Zhou Yu ming 1,Xu Bao wen 1,2 1. department of Computer Science and Engineering, Southeast university, nanjing 210096,China 2. State Key Laboratory of Software Engineering, Wuhan university, Wuhan 43.072,Ch department of Computer Science and Engineering Southeast University Nanjing China State Key Laboratory of Software Engineering Wuhan University Wuhan China

Extracting objects from legacy systems is a basic step in system's object orientation to improve the maintainability and understandability of the systems. A new object extraction model using association rules and dependence analysis is proposed. In this model data are classified by association rules and the corresponding operations are partitioned by dependence analysis.

关键词： reverse engineering data mining association rules dependence analysis program slicing

Error estimate of the homogenization solution for elliptic problems with small periodic coefficients on L~∞(Ω)

在线全文

学校读者我要写书评

暂无评论

Science China Mathematics 2010年第5期53卷 194-215页

作者： HE WenMing1,2 & CUI JunZhi3.1department of Mathematics,Wenzhou university,Wenzhou 3.503.,China 2School of Aeronautics and Astronautics,Zhejiang university,Hangzhou 3.0027,China 3.SEC,ICMSEC,Academy of Mathematics and Systems Science,Chinese Academy of {3.,Beijing 100190,China 1. department of Mathematics Wenzhou University Wenzhou 325035 China2. School of Aeronautics and Astronautics Zhejiang University Hangzhou 310027 China3. LSEC ICMSEC Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China

In this paper,we discuss the multi-scale homogenization theory for the second order elliptic problems with small periodic coefficients of the form xi(aij(xε) uεx(jx)) = f(x).Assuming n = 2 and u0 ∈ W 1,∞(Ω),we present an error estimate between the homogenization solution u0(x) and the exact solution uε(x) on the Sobolev space L∞(Ω).

关键词： multi-scale homogenization theory homogenization solution second order elliptic equations with small periodic coeficients

Metal complexes with multicarboxylate and N-donor ligands

在线全文

学校读者我要写书评

暂无评论

Metal complexes with multicarboxylate and N-donor ligands

A New Method for Solving the Continuous Multi-Object Optimization Problems

中国化学会第五届全国结构化学学术会议

作者： Qian Chu Guang-Xiang Liu Yong-Qing Huang Wei-Yin Sun Coordination Chemistry Institute,State Key Laboratory of Coordination Chemistry,School of Chemistry and Chemical Engineering,nanjing university,nanjing {3.China

We focus our attention on synthesis,structure and properties of metal-organic frameworks (MOFs) with varied transition/rare earth metal centers and multidentate organic ligands,such as a V-shaped multicarboxylate ligand 3.3.,4,4′-oxydiphthalic acid(HOA),a flexible ligand 1,3.5-benzenetriacetic acid(Hbta) etc.A systematic study of reactions of HOA/Hbta and

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

A New Method for Solving the Continuous Multi-Object Optimiz...

Effects of adenosine agonist R-phenylisopropyl-adenosine on halothane anesthesia and antinociception in rats

智能计算及其应用国际会议

作者： HU Yefa1 CHENG Hao1 HU Xiaolin2 HUANG Zhangcan3.(1. School of Mechanical and Electrical Engineering Wuhan university of Technology Wuhan 43.070 China) (2. department of Automation & Computer-Aided Engineering The Chinese university of Hong Kong Hong Kong SAR China) (3. State Key Laboratory of Software Engineering Wuhan university Wuhan 43.072 China)

In this paper, we proposed a new multi-object evolutionary algorithm (MOEA), neighborhood exploring evolutionary strategy (NEES), which focused on search operators to generate new individuals in MOEA.

关键词： Neighborhood exploring evolution strategy multi-objective optimization evolutionary algorithm evolution strategy

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

Acta Pharmacologica Sinica 2005年第2期26卷 181-185页

作者： Hai-chun MA~(2,4),Yan-fen WANG~3.Chun-sheng FENG~2,Hua ZHAO~(4,5),Shuji DOHI~6~2department of Anesthesiology,the First Hospital of Jilin university,Changchun 13.021,China ~3.0} of Digestive Disease,the SecondHospital of Jilin university,Changchun 13.041,China ~4department of Physiology,Basic Medical School,Jilin university,Changchun 13.021,China ~6department of Anesthesiology,School of Medicine,Gifu university,Gifu 5008705,Japan department of Anesthesiology the First Hospital of Jilin University Changchun 130021 China

Aim:To investigate the antinociceptive effect of adenosine agonist R-phenylisopropyl-adenosine（R-PIA）given to conscious rats by intracerebro-ventricular（ICV）and intrathecal（IT）,and identify the effect of R-PIA on minimumalveolar concentration（MAC）of halothane with pretreatment of A1receptor an-tagonist 8-cyclopentyl-1,3.dipropylxanthine（DPCPX）or K+channel blocker4-aminopyridine（4-AP）.Methods:Sprague-Dawley rats were implanted with 24-gauge stainless steel guide cannula using stereotaxic apparatus and ICV method,and an IT catheter（PE-10,8.5cm）was inserted into the lumbar subarachnoidspace,while the rats were under pentobarbital *** one week ofrecovery from surgery,rats were randomly assigned to one of the followingprotocols:MAC of halothane,or tail-flick *** measurements were per-formed after R-PIA（0.8-2.0μg）microinjection into ICV and IT with or withoutpretreatment of DPCPX or ***:Microinjection of adenosine agonist R-PIA in doses of 0.8-2.0μg into ICV and IT produced a significant dose-and time-dependent antinociceptive action as reflected by increasing latency times andICV administration of adenosine agonist R-PIA（0.8μg）reducing halothane anes-thetic requirements（by 29%）.The antinociception and reducing halothane re-quirements effected by adenosine agonist R-PIA was abolished by DPCPX ***:ICV and IT administration of adenosine agonist R-PIA pro-duced an antinociceptive effect in a dose-dependent manner and decreased hal-othane MAC with painful stimulation through activation of A1receptor subtype,and the underlying mechanism involves K+channel activation.

关键词： adenosine inhalation anesthesia analgesia potassium channels subarachnoid space cerebral ventricles

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

致病性嗜水气单胞菌及其所致鱼病综述

水产学报 1992年第3期16卷 282-288页

作者：陆承平南京农业大学兽医系 210014

尽管早在1891年就有因嗜水气单胞菌(Aeromonas hydrophila)感染引致蛙“红腿病”的报道,但由于该菌在自然界尤其是水中广泛分布,一般为正常共栖菌,因此长期以来对其致病性并未重视。近年来在我国南方各省淡水养殖鱼类流行暴发性传染病,... 详细信息

尽管早在1891年就有因嗜水气单胞菌(Aeromonas hydrophila)感染引致蛙“红腿病”的报道,但由于该菌在自然界尤其是水中广泛分布,一般为正常共栖菌,因此长期以来对其致病性并未重视。近年来在我国南方各省淡水养殖鱼类流行暴发性传染病,有报道系为该菌所致败血症。此外在其它水生经济动物、哺乳动物亦有类似发现。人类因之而发生胃肠炎及伤口感染的病例也日渐增多。嗜水气

关键词：嗜水气单胞菌致病性鱼病

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

植酸钠对黑曲霉柠檬酸发酵产酸的促进效应

微生物学通报 1994年第4期21卷 220-224页

作者：李林傅庭治曹幼琴南京大学生物系

研究了植酸钠对黑曲霉柠檬酸发酵产酸的促进效应。在葡萄糖全合成培养基中添加１％的植酸钠，可使产酸比对照提高２．４倍；在薯粉、玉米粉等天然培养基中添加１％植酸钠，柠檬酸产量分别提高１．７倍和１．３倍。酶活性测定分析表明，... 详细信息

研究了植酸钠对黑曲霉柠檬酸发酵产酸的促进效应。在葡萄糖全合成培养基中添加１％的植酸钠，可使产酸比对照提高２．４倍；在薯粉、玉米粉等天然培养基中添加１％植酸钠，柠檬酸产量分别提高１．７倍和１．３倍。酶活性测定分析表明，植酸钠对柠檬酸代谢途径中的几种关键酶的活性有影响。

关键词：植酸钠黑曲霉柠檬酸发酵