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New fossil elaterid (Coleoptera: Polyphaga: Elateridae) from Yixian Formation of western Liaoning, china

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Progress in Natural science:Materials International 2007年第10期17卷 1244-1249页

作者： Chang Huali, Ren Dong and Shih Chungkun(college of Life science, Capital Normal university, beijing 100037, china) college of Life science Capital Normal University Beijing 100037 China

A new species of the elaterid genus Cryptocoelus Dolin and Nel, 2002 from the Late Jurassic to Early Cretaceous Yixian Formation in the western Liaoning, china is described. Diagnosis of the genus is revised, and the systematic position of the genus is briefly discussed. Because the elaterids originated in the Early to Mid-Jurassic, this new material from the Late Jurassic-Early Cretaceous will enhance our understanding of the transition between ancient elaterids and extant ones, bridge the gap of cryptic relationships between the Mesozoic cupedids and elaterids, and expand our knowledge of their evolutionary history.

关键词： Elateridae new species Yixian Formation china.

Knockdown of CD146 reduces the migration and proliferation of human endothelial cells

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Cell Research 2006年第3期16卷 313-318页

作者： Yanyong Kang~(1,3) Fengcai Wang~(1,2) Jing Feng~1 Dongling Yang~1 Xu Yang~3 Xiyun Yan~11 National Laboratory of Biomacromolecules,Institute of Biophysics,Chinese Academy of science beijing 100101,china 2 Chemistry Department,Anyang teacher's college,Anyang 455000,china 3 college of Life science,Central china Normal university,Wuhan 430079,china National Laboratory of Biomacromolecules Institute of Biophysics Chinese Academy of Science Beijing China college of Life science Central China Normal University Wuhan China Chemistry Department Anyang teacher's College Anyang China

Our previous study has demonstrated that CD 146 molecule is a biomarker on vascular endothelium,which is involvedin angiogenesis and tumor *** the mechanism behind is not *** we have for the first time devel-oped a novel CD146 blockade system using CD146 siRNA to study its function on endothelial *** data showedthat CD146 siRNA specifically blocked the expression of CD146 on both mRNA and protein levels,leading to thesignificant suppression of HUVEC proliferation,adhesion and *** results demonstrate that CD146 playsa key role in vascular endothelial cell activity and angiogenesis,and CD146 siRNA can be used as a new inhibitor foranti-angiogenesis therapy.

关键词： small interfering RNA adhesion molecule CD 146 vascular endothelial cell

Study on NDVI-T_s space by combining LAI and evapotranspiration

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science china Earth sciences 2006年第7期49卷 747-754页

作者： HAN Lijuan1,2,3, WANG Pengxin4, YANG Hua1,2,3, LIU Shaomin1,2,3 & WANG Jindi1,2,3 1. Research Center for Remote Sensing and GIS, School of Geography, beijing Normal university, beijing 100875, china 2. State Key Laboratory of Remote Sensing science, beijing 100875, china 3. beijing Key Laboratory for Remote Sensing of Environment and Digital Cities, beijing 100875, china 4. Department of Information Management, college of Information and Electronic Engineering, china agricultural university, beijing 100083, china Research Center for Remote Sensing and GIS School of Geography Beijing Normal University Beijing China State Key Laboratory of Remote Sensing science Beijing China beijing Key Laboratory for Remote Sensing of Environment and Digital Cities Beijing China Department of Information Management College of Information and Electronic Engineering China Agricultural University Beijing China

This paper focuses on interpreting the different spatial relationships between NDVI and Ts, a triangular or a trapezoid, and on analyzing transformation conditions, the physical and ecological meanings of the vegetation index-surface temperature space as well. Further, we use the Tempera-ture-Vegetation Dryness Index (TVDI) to explain the existent meaning of a triangular space after NDVI reaches its saturated state by employing the relationships between NDVI, LAI and evapotranspiration. The specific relations between NDVI and Ts are useful for describing, validating and updating land surface models.

关键词： NDVI, land surface temperature, evapotranspiration, leave area index.

The Recognition of Glycolate Oxidase Apoprotein with Flavin Analogs in Higher Plants

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Acta Biochimica et Biophysica Sinica 2004年第4期36卷 290-296页

作者： Wei-Jun WANG*, Jing-Quan HUANG, Chong YANG, Jiu-Jiu HUANG, and Ming-Qi LI college of Life science, South china agricultural university, Guangzhou 510642, china college of Life science South China Agricultural UniversityGuangzhou 510642 China

The dependence of glycolate oxidase apoprotein (apoGO) activity on flavin analogs was surveyed in 9 higher plants from 7 families. Activities of all apoGOs depended not only on flavin mono- nucleotide (FMN) but also on flavin adenine dinucleotide (FAD), but not on riboflavin. The kinetic analysis showed that FMN was the optimum cofactor for apoGO from leaves of Brassica campestris. In plant kingdom, FMN, FAD and riboflavin are three flavin analogs with very similar structure, and they could coexist and be inter-converted from each other, so the question is how the apoprotein of glycolate oxidase (GO) recognized these flavin analogs. No inhibition effect of riboflavin on the activity of apoGO with FMN or FAD was found and no obvious quenching of riboflavin or apoGO protein fluorescence was detected with the addition of apoGO or riboflavin, respectively. These results indicated that riboflavin did not bind to apoGO tightly like FMN and FAD. Inorganic phosphate (Pi) did inhibit the activity of GO, and kinetic analysis revealed that this inhibition was caused by the competitive binding to apoGO between Pi and FMN. This competitive binding was further confirmed by the inhibition of Pi to the quenching of FMN and apoGO protein fluorescence with apoGO and FMN, respectively. It was suggested that the 5’-phosphate group of FMN or FAD may play a key role in the recognition and binding of riboflavin analog cofactors with apoGO.

关键词： glycolate oxidase in higher plant flavin analogs 5’-phosphate moiety recognition

Recent progress and application of materials life cycle assessment in china

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Progress in Natural science:Materials International 2011年第1期21卷 1-11页

作者： Zuo-ren NIE,Feng GAO,Xian-zheng GONG,Zhi-hong WANG,Tie-yong ZUO college of Materials science and Engineering,beijing university of technology,beijing 100124,china college of Materials science and Engineering Beijing University of Technology Beijing 100124 China

Life cycle assessment(LCA) is a technique for systematically analyzing the environmental impacts and resources used throughout a target’s life cycle,*** raw material acquisition,via production and use phases,to waste *** is an effective tool that gives a detailed information of environmental profiles of a material or a *** importantly,the value of life cycle thinking lies in its ability to provide the decision-making basis for sustainable development,making the products, industries and even the whole industry chain act more in line with the principles of sustainable *** recent developments of LCA methods and applications of materials life cycle assessment in china were *** the sections on LCA methodology,the data quality analysis,the impact of land use and abiotic resource depletion as well as the weakness in life cycle impact assessment were *** relation to the applications,the Chinese materials database(SinoCenter Database) and several representative case studies such as life cycle analysis of civilian buildings and metal production in china were introduced.

关键词： materials life cycle assessment LCIA methodology

A class of discounted models for singular diffusion control

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Chinese science Bulletin 2000年第5期45卷 405-408页

作者： LIU Kunhui, QIN Mingda & LU Chuanlai1. college of sciences, Northern Jiaotong university, beijing 100044, china 2. Department of Mathematics and Mechanics, beijing university of science and technology, beijing 100083 .china 3. Department of Information Engineering, beijing university of Posts and Telecommunications, beijing 100876, china Correspondence should be addressed to Lu Chuanlai college of sciences Northern Jiaotong University Beijing China Department of Mathematics and Mechanics Beijing University of Science and Technology Beijing China Department of Information Engineering Beijing University of Posts and Telecommunications Beijing China

A kind of discounted problems for singular diffusion control have been studied. The drift and diffusion coefficients of state process are nonlinear. The class of models has been basically extended from a corresponding one established by Karatzes et al. before. By applying some analysis methods different from earlier works, the sufficient and necessary conditions of the existence of optimal control have been obtained. If an optimal control exists, it is a 'transient reflection' of state process for two lines.

关键词： stochastic control variational equation singular stochastic control.

Synthesis and thermodynamic analysis of nano-La2O3

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Progress in Natural science:Materials International 2007年第7期17卷 838-844页

作者： Liu Lili~(1,2) Tang Jie~2 Li Yuxiang~1 Zhang Mei~(1**) Wang Xidong~(1,3) (1.Department of Physical Chemistry,university of science and technology beijing,beijing 100083,china 2.National Institute for Materials science,Segen 1-2-1,Tsukuba 305-0047,Japan 3.college of Engineering,beijing university,beijing 100871,china) Department of Physical Chemistry University of Science and Technology Beijing Beijing 100083 China National Institute for Materials science Segen 1-2-1 Tsukuba 305-0047 Japan college of Engineering Beijing University Beijing 100871 China

The thermodynamic parameters of La（NO3）3and La（OH）3are evaluated and the thermodynamics of nano-La2O3syn- thetic process is *** the base of thermodynamic analysis,La2O3nano-powders are prepared by the sol-gel method and the experi- ment scheme is designed by an orthogonal *** dry-gelatin is analyzed with differential thermal analysis/thermo-gravimetric analy- sis（TGA-DTA）and X-ray diffraction *** microstructure of nano-La2O3powders is observed by transmission dectron micro- *** synthetic parameters affecting the average grain size and dispersivity of nano-La2O3particles are experimentally examined and *** the results indicate that nano-La2O3particles well-dispersed are obtained and the average grain size is in the range of 20—50 nm.

关键词： nano-La2O3 sol-gel thermodynamic analysis

Nonholonomic mapping theory of autoparallel motions in Riemann-Cartan space

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science china(Physics,Mechanics & Astronomy) 2010年第9期53卷 1707-1715页

作者： GUO YongXin1,LIU Chang2,WANG Yong3,LIU ShiXing1 & CHANG Peng2 1 college of Physics,Liaoning university,Shenyang 110036,china 2 School of Aerospace Engineering,beijing Institute of technology,beijing 110081,china 3 School of Basic Medical science,Guangdong Medical college,Dongguan 523808,china Liaoning university College of Physics Shenyang China (GRID:grid.411356.4) (ISNI:***) beijing Institute of technology School of Aerospace Engineering Beijing China (GRID:grid.43555.32) (ISNI:***) Guangdong Medical college School of Basic Medical Science Dongguan China (GRID:grid.410560.6)

The method of nonholonomic mapping is utilized to construct a Riemann-Cartan space embedded into a known Riemann-Cartan space,which includes two special cases that a Weitzenbck space and a Riemann-Cartan space are respectively embedded into a Euclidean space and a Riemann *** means of this mapping theory,the nonholonomic corresponding relation between the autoparallels of two Riemman-Cartan spaces is *** particular,an autoparallel in a Riemann-Cartan space can be mapped into a geodesic line in a Riemann space and an autoparallel in Weitzenbck space be mapped into a geodesic line in Euclidean *** on the Lagrange-d'Alembert principle,the equations of motion for dynamical systems in Riemman-Cartan space should be autoparallel equations of the *** applications,the problem of autoparallel motion of spinless particles,Chaplygin's nonholonomic systems and a rigid body rotating with a fixed point are investigated in space with torsion.

关键词： nonholonomic mapping Riemann-Cartan space connection torsion autoparallel

A POSTERIORI ERROR ANALYSIS OF NONCONFORMING METHODS FOR THE EIGENVALUE PROBLEM

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Journal of Systems science & Complexity 2009年第3期22卷 495-502页

作者： Youai Licollege of Computer and Information Engineering, beijing technology and Business university, beijing100048,china. college of Computer and Information Engineering Beijing Technology and Business University Beijing China

This paper extends the unifying theory for a posteriori error analysis of the nonconformingfinite element methods to the second order elliptic eigenvalue *** particular,the authorproposes the a posteriori error estimator for nonconforming methods of the eigenvalue problems andprove its reliability and efficiency based on two assumptions concerning both the weak continuity andthe weak orthogonality of the nonconforming finite element spaces,*** addition,the authorexamines these two assumptions for those nonconforming methods checked in literature for the Laplace,Stokes,and the linear elasticity problems.

关键词： A posteriori error analysis eigenvalue problem nonconforming finite element.