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Morphology transition in a heteroepitaxial system: Co/Cu(111)

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Rare Metals 2006年第z1期25卷 540-543页

作者： WU Fengmin LU Hangjun FANG Yunzhang Department of Physics Zhejiang Normal University Jinhua 321004 China Department of Physics Zhejiang Normal University Jinhua 321004 China Department of Physics Zhejiang Normal University Jinhua 321004 China

The initial stages of multilayer Co thin film grown on Cu(111) surface were simulated by means of kinetic Monte Carlo (KMC) method, where the realistic growth model and physical parameters were presented. The effects of edge diffusion along the islands and mass transport between interlayers were included in the simulation model. Emphasis was placed on revealing the transition of growth morphology in heteroepitaxial Co/Cu(111) system with the changing of surface temperature. The simulation results show that the dendritic islands form at low temperature (T=2.0 K), while compact islands grow at room temperature (RT). The Volmer-Webber (three-dimensional, 3D) growth mode is presented due to the relative higher Ehrlich-Schwoebel (ES) barrier. Our simulation results are in good agreement with the real scanning tunneling microscopy (STM) experiments.

关键词： heteroepitaxy morphology transition KMC simulation ES barrier

A Sufficient Condition for a Smash Product as a Transfinite Left Free normalizing Extension and Its Application

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Acta Mathematica Sinica,English Series 2000年第1期16卷 71-78页

作者： Fang Li Department of Mathematics,zhejiang University Xixi Campus,Hangzhou 31002.,P.R.ChinaZhongkui Liu Department of Mathematics,Northwest normal University,Lanzhou 730070,P.R.China Department of Mathematics Zhejing University Xixi Campus Hangzhou 310028 P.R. China

In this paper,a sufficient condition is given under which the smash product A#H is a transfinite *** normalizing extension of an algebra ***,the result is applied to a skew semigroup ring,a skew group ring and the qua... 详细信息

关键词： Smash product Transfinite left free normalizing extension Skew semigroup ring Quantum group

Parameter Identification of Hysteresis Model with Improved Particle Swarm Optimization

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Parameter Identification of Hysteresis Model with Improved P...

Reductive Cleavage of S-S Bond by Sm/NiCl_2.or Sm/NiCl_2.6H_2. System: A New Method for the Preparation of Thiolesters

2.09中国控制与决策会议

作者： Meiying Ye~1,Xiaodong Wang~2.1.Department of Physics,zhejiang normal University,Jinhua 32.004,China 2.Department of Electronic Engineering,zhejiang normal University,Jinhua 32.004,China

＜正＞An improved particle swarm optimization（IPSO） algorithm combined with chaotic map is proposed to identify the parameters of hysteresis *** performance of IPSO algorithm was compared with genetic algorithm （GA） in terms of the accuracy of identified parameter and the shape of the reconstructed *** on the IPSO, numerical simulation of a typical hysteresis model,Bouc-Wen model,with all the unknown parameters were carried out in order to show the effectiveness of the proposed *** results indicate that the higher quality solution than the GA method can be achieved by means of the proposed IPSO *** may be attributed mostly to the fact that IPSO improve the global searching capability by escaping the local solutions.

关键词： Parameter Identification Hysteresis Model Particle Swarm Optimization

来源： cnki会议评论

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Chinese Chemical Letters 1999年第11期10卷 899-902页

作者： Hua Yue WU Red Er CHEN Yong Min ZHANG(Department of Cheniistry, Wenzhou normal College, Wenzhou, 32.000)(Departnieni of Chemistry. zhejiang University at Xixi Campus, Hangzhou, 31002.) Department of Chemistry Wenzhou Normal College Wenzhou 325000 China Department of Chemistry Zhejiang University at Xixi Campus Hangzhou 310028 China

Disulfides were reduced by the Sm/NiCl2.or Sin/NiCI_2.6H_2. system to generate thiolateanion. which reacted further with anhydrides or acyl chlorides to afford thiolesters in good yieldsunder mild and neutral conditions.

关键词： Samarium-nickel (II) chloride. disulfide thiolester.

Effects of free sterols on the fluidity of polar lipids in rice dry embryo

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Chinese Science Bulletin 1999年第10期44卷 933-937页

作者： YANG Ling and SU Weiai Biology Department of zhejiang normal University, Jinhua 32.004, China Shanghai Institute of Plant Physiology , Chinese Academy of Sciences , Shanghai 2.0032., China Biology Department of zhejiang normal University Jinhua China Shanghai Institute of Plant Physiology Chinese Academy of Sciences Shanghai China

Free sterols from rice dry embryo reduce the onset phase transition temperature and widen the transition range of total polar lipids and phosphatidylglycerol, which increases the membrane fluidity below their phase transition temperature and decreases the fluidity of membranes above their phase transition temperature. And 50% of free sterols result in a complete disappearance of phase transition. The fluidity of other main components of polar lipids is decreased by free sterols above 0℃. The results confirm that free sterols can modulate membrane lipid fluidity.

关键词： free sterol membrane lipids fluidity rice embryo.

Nonautonomous bright solitons and soliton collisions in a nonlinear medium with an external potential

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Chinese Physics B 2012年第5期21卷 145-152页

作者：李画眉葛龙何俊荣 Department of Physics Zhejiang Normal University

We present exact bright multi-soliton solutions of a generalized nonautonomous nonlinear Schroinger equation with time-and space-dependent distributed coefficients and an external potential which describes a pulse propagating in nonlinear media when its transverse and longitudinal directions are nonuniformly *** solutions exist in certain constraint conditions on the coefficients depicting dispersion,nonlinearity,and gain（loss）.Various shapes of bright solitons and interesting interactions between two solitons are *** applications of interest to the field and stability of the solitons are discussed.

关键词： generalized nonautonomous nonlinear Schrodinger equation multi-soliton solution,Fourier-synthesized optical lattice potential flying bird potential

DRYING UP OF THE YELLOW RIVER &ITS WATER RESOURCE BEARING CAPACITY

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Natural Disaster Reduction in China 2002年第4期 18-21页

作者： Feng Lihua (Department of Geography, zhejiang normal University, Jinhua 32.004, zhejiang)

The paper analyses the space time characteristics, primary causes and disastrous effects of the drying up of the Yellow River, and proposes the concept of "water resource bearing capacity (WRBC)", which refers to the maximum bearing capacity of a river in meeting human demands for water on the precondition of sound recycling of the ecosystem. The concept encourages cautious human actions to save and conserve water resources.

关键词： drying up of the Yellow River water environment water resource bearing capacity sustainable use

An exact solution of the radial Schrodinger equation for the potential V(r)=a_1r^3+a_2.^(1/2.+a_3r^(-3/2.+a_4r^(-5/2.+a_5r^(-3)

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浙江海洋学院学报（人文科学版） 1994年第3期11卷 7-8页

作者： Cai Qing Department of physics, zhejiang normal University

Using the asymptotic bohavior of the eigenfuntion as r→∞　andr→0 respectively,we have obtained an exact solution of the radial Schrodingerequation for the potential,and a general formula of the energy eigenfunction... 详细信息

关键词： exact asymptotic radial 一吾石丁一三

Characterization of Nitrogen Metabolism in the Low-Nitrogen Tolerant lnt1 Mutant of Arabidopsis thaliana Under Nitrogen Stress

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Pedosphere 2010年第5期20卷 623-632页

作者： TENG Yi-Bo LI Ya-Juan FANG Ping LA Gui-Xiao Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health College of Environmental and Resource Sciences Zhejiang University Hangzhou 310029 (China) zhejiang Provincial Key Laboratory of Subtropical Soil Science and Plant Nutrition College of Environmental and Resource Sciences Zhejiang University Hangzhou 310029 (China)

A growth experiment on agar medium and a hydroponics experiment were carried out to study the nitrogen （N） metabolism of a low-N tolerant mutant （lntl） of Arabidopsis thaliana under different N levels as compared with the wild- type （WT） Arabidopsis. On the agar medium, no apparent growth differences were observed between the lntl and WT plants under a normal N level of 9 mmol L^-1 NO3. However, under a low N level of 0.18 mmol L^-1 NO3^-, the growth of the WT plants was greatly retarded, while the lntl plants were not affected by low-N stress and showed similar growth with those grown under a normal N level. In the hydroponics experiment, the lntl mutant had higher activities of glutamine synthetase （GS） and NADH-dependent glutamate synthase （NADH-GOGAT） in both leaves and roots under N-deficient conditions. Moreover, they accumulated less ammonium （NH4^＋） but more free amino acids in leaves compared with the WT plants. These observations suggest that better N assimilation might contribute to the low-N tolerant phenotype of the lnt1 mutant.

关键词： ammonium free amino acids glutamate synthase glutamine synthetase nitrogen assimilation