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Exactly Solved Anderson Lattice Model

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Chinese Physics Letters 1996年第3期13卷 207-210页

作者： liu wu-ming ZHAO Hong-wei PU Fu-ke Institute of Physics Chinese Academy of SciencesBeijing 100080 Institute of Theoretical Physics Shanxi UniversityTaiyuan 030006 International Center for Materials Physics Chinese Academy of SciencesShenyang 110015 Department of Physics Tsinghua UniversityBeijing 100084 CCAST(World Laboratory) PO.Box 8730Beijing 100080

A solvable Anderson lattice model is *** exact eigenstates of model Hamiltonian are constructed by using the Bethe *** Be the ansatz equations are obtained from the periodic boundary conditions.

关键词： conditions Hamiltonian exact

Efficient synthesis of 4(3H)-quinazolinones using a soluble polymeric support

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Chinese Chemical Letters 2008年第5期19卷 505-508页

作者： Chang Xie Hong Xia Li ming Guo liu ming wu Ding Key Laboratory of Pesticide ＆ Chemical Biology of Ministry of Education Central China Normal University Wuhan 430079 China

4（3H）-Quinazolinones have been synthesized from poly（ethylene glycol）（PEG） supported aza-Wittig reaction. 2-Dialkylamino- 4（3H）-quinazolinones 6 were synthesized efficiently by reaction of secondary amine with PEG-supported carbodiimides 4, which were obtained from aza-Wittig reaction of PEG-supported iminophosphoranes 3 with isocyanates.

关键词： 4(3H)-Quinazolinone Poly(ethylene glycol) supported Aza-Wittig reaction Carbodiimide Iminophosphorane

Intrinsic Localization of Bloch Electrons in dc-ac Electric Fields

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Chinese Physics Letters 1997年第12期14卷 924-927页

作者： liu wu-ming ZHAO Xian-geng liu Ke Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100080 Institute of Applied Physics and Computational Mathematics Beijing 100088 Institute of Acoustics Chinese Academy of SciencesBeijing 100080

Exact soliton solutions describing nonlinear dynamical behavior of Bloch electrons under action of dc-ac electric fields are obtained,from which it is found that the evolution behavior of Bloch electrons is always oscillatory in time,with oscillatory frequencies depending on electric fields.A number of phenomena associated with the translational symmetry of the system,the staggered localized states,as well as the relationship between intrinsic localized states and solitons are *** corresponding energy,momentum,and norm are also studied.

关键词： Bloch oscillatory soliton

Numerical Study on Welding Line Behavior of Deep Drawing TWB Process

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Journal of Iron and Steel Research International 2007年第5期14卷 36-38,46页

作者： WANG Li-juan WANG Guo-dong liu Xiang-hua wu ming-tang State Key Laboratory of Rolling Automation and Technology Northeastern University Shenyang 110004 Liaoning China

The FEM technology is used to analyze the welding line movement behavior of deep drawing TWB sheet with different thickness. It is found that high stress fields are concentrated around the welding line and large residual stresses are left. The effect of the welding line movement is like a rigid string and the selected nodes of the thin part near the welding line show the related larger strain.

关键词： welding line behavior deep drawing TWB

Rapid and efficient synthesis of new chiral aromatic amide molecular tweezers under solvent-free conditions using microwave

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Chinese Chemical Letters 2009年第4期20卷 397-400页

作者： Xiao Xiang Zhao Zhi Gang Zhao Xing Li liu Xiu ming wu College of Chemistry and Environmental Protection Engineering Southwest University for Nationalities Chengdu 610041 China

An efficient and simple method for the synthesis of new chiral aromatic amide molecular tweezers by irradiation with microwave under solvent-free conditions has been developed. Its main advantages are short reaction t... 详细信息

关键词： Molecular tweezer Aromatic amide Microwave irradiation Molecular recognition

A Comparison of Chinese, Japanese, and Korean shipyard production technology

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Journal of Marine Science and Application 2007年第2期6卷 25-29页

作者： BAI Xue-ping NIE wu liu Cheng-ming College of Shipbuilding Engineering Harbin Engineering University Harbin 150001 China

This paper compares Chinese, Korean, and Japanese shipyard production technology. Development in the world shipbuilding over recent years has influenced focus areas related to shipyard manufacturing technologies and product performance. Software systems, information technology, production technology, and local challenges of shipyards are compared with shipbuilding outputs among these three countries. Various technologies developments, shipyard production and the problems in Chinese, Japanese, and Korean shipyards are discussed respectively. Finally, future areas of research are pointed out.

关键词： shipyard production manufacturing technologies software systems shipbuilding output future researches

Treatment Efficiencies of Constructed Wetlands for Eutrophic Landscape River Water

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Pedosphere 2007年第4期17卷 522-528页

作者： HE Sheng-Bing YAN Li KONG Hai-Nan liu Zhi-ming wu De-Yi HU Zhan-Bo School of Environmental Science and Engineering Shanghai Jiaotong University Shanghai 200240 （China）.

The efficiencies of two types of constructed wetlands for the treatment of low-concentration polluted eutrophic land- scape river water were studied in the western section of the Qingyuan River at the Minhang campus of Shanghai Jiaotong *** first wetland was a single-stage system using gravel as a filtration medium,and the second was a three- stage system filled with combinations of gravel,zeolite,and fly *** from parallel operations of the wetlands showed that the three-stage constructed wetland could remove organics,nitrogen, and phosphorus *** the same time,it could also decrease ammoniacal odour in the *** to the single-stage constructed wetland,it had better nutrient removal efficiencies with a higher removal of 19.37%-65.27% for total phosphorus (TP) and 21.56%- 62.94% for total nitrogen (TN),respectively,during the operation period of 14 *** terms of removal of chemical oxygen demand (COD), turbidity,and blue-green algae,these two wetland systems had equivalent *** was also found that in the western section of the test river,in which the two constructed wetlands were located, the water quality was much better than that in the eastern and middle sections without constructed wetland because COD,TN, and TP were all in a relatively lower level and the eutrophication could be prevented completely in the western section.

关键词： constructed wetland eutrophic landscape river water treatment

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光响应纳米基因载体的研究进展

中国激光 2018年第3期45卷 32-42页

作者：李炯刘小龙吴名福建医科大学孟超肝胆医院福建福州350025

光响应纳米基因载体可借外界光源实现基因的定时、定点释放,已逐渐成为非病毒基因载体研究的热点。根据响应光波长的不同,可将光响应纳米基因载体分为紫外/可见光响应的纳米基因载体和近红外光响应的纳米基因载体。综述了这两类载体材... 详细信息

光响应纳米基因载体可借外界光源实现基因的定时、定点释放,已逐渐成为非病毒基因载体研究的热点。根据响应光波长的不同,可将光响应纳米基因载体分为紫外/可见光响应的纳米基因载体和近红外光响应的纳米基因载体。综述了这两类载体材料当前的研究进展,阐述了其响应机理和释放过程,并总结了光响应纳米基因载体在构建过程中亟待解决的问题。

关键词：医用光学光响应纳米基因载体基因控制释放紫外一可见光近红外光

梯度磁场中自旋-轨道耦合旋转两分量玻色-爱因斯坦凝聚体的基态研究

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物理学报 2018年第11期67卷 57-65页

作者：李吉刘伍明中国科学院物理研究所北京凝聚态物理国家研究中心北京100190 中国科学院大学物理学院北京100049

利用准二维Gross-Pitaevskii方程,研究了在梯度磁场中具有自旋-轨道耦合的旋转两分量玻色-爱因斯坦凝聚体的基态结构.探索了自旋-轨道耦合作用和梯度磁场对基态的影响.结果发现,在梯度磁场下,随着自旋-轨道耦合强度增大,基态结构由skyrm... 详细信息

利用准二维Gross-Pitaevskii方程,研究了在梯度磁场中具有自旋-轨道耦合的旋转两分量玻色-爱因斯坦凝聚体的基态结构.探索了自旋-轨道耦合作用和梯度磁场对基态的影响.结果发现,在梯度磁场下,随着自旋-轨道耦合强度增大,基态结构由skyrmion格子逐渐过渡为skyrmion列.对于弱自旋-轨道耦合和小旋转频率情况,增大磁场梯度强度可导致基态由平面波相转变为half-skyrmion;对于强自旋-轨道耦合和大旋转频率情况,梯度磁场可诱导hidden涡旋的产生.梯度磁场、自旋-轨道耦合和旋转作为体系的调控参数,可用于控制不同基态相间的转化.

关键词：两分量玻色-爱因斯坦凝聚体梯度磁场自旋-轨道耦合自旋结构