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Science china(Technological sciences) 2009年第1期52卷 256-259页

作者： MI Jing, LIU XiaoPeng, LI ZhiNian, JIANG LiJun, HUANG Zhuo & WANG ShuMao Energy Material and Technology research Institute, General research Institute for Non-ferrous Metals, beijing 100088, china Energy Material and Technology research Institute General Research Institute for Non-ferrous Metals Beijing China

In this paper, the effects of Si and Ce on the microstructure and hydrogen storage property of Ti26.5 Cr20V45Fe8.5Ce0.5 alloy were studied, respectively. First of all, effects of Si on the microstructure and hydrogen storage properties of Ti26.5Cr20(V45Fe8.5)1?xSixCe0.5 (x = 0, 0.5, 1.0, 1.5 and 2.0 at%) alloys were studied by X-ray diffraction, scanning electron microscopy and P-C isotherm measurements. As the Si addition increases, the hydrogen absorption capacities of alloys decrease but the equilibrium pressure increases, due to the formation of Laves phase. Secondly, the effect of Ce on Ti26.5Cr20 (V45Fe8.5)0.98Si2 alloy was studied. It was found that Ce addition is an effective way to eliminate the effect of Si on the hydrogen storage properties of the alloy.

关键词： hydrogen storage materials Ti-V based alloy Laves phase

Structural and electronic properties of phenyl-coinage metal （Ag and Au） complexes

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Structural and electronic properties of phenyl-coinage metal...

第九届全国化学动力学会议

作者： Shutao Sun,Xiaopeng Xing,Hongtao Liu, and Zichao Tang State Key Laboratory of Molecular Reaction Dynamics,center of Molecular Science, Institute of Chemistry, chinese academy of sciences, beijing 100080, P.R.china

＜正＞The important intermediate phenyl-coinage metal complexes MmC6H5- （M=Ag and Au;m=1-3） which are produced from the reactions between coinage metal clusters formed by laser ablation and the benzene molecules seeded in argon carrier gas, are studied by RTOFMS （reflectron time-of-flight mass spectrometer）, PES

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The research of Tension Optimal Estimation and Stair-Climbing Ability of Transformation Wheelchair Robot

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The Research of Tension Optimal Estimation and Stair-Climbin...

第二十九届中国控制会议

作者： TENG Yun1,2,WANG Ting2,YAO Chen 2,LI Xiaofan 2 1.Graduate School of the chinese academy of sciences,beijing 100049,P.R.china2.State Key Robotics Lab,Shenyang Institute of Automation,chinese academy of sciences,Shenyang 110016,china

To meet the rapid increasing demand of the equipment assisting the disabled and the old,a novel style transmuting track wheelchair robot is *** has the characteristic that the track tension can be determined *** to traditional method that keeps track tension constantly,dynamically determining tension can reduce power consumption *** on the fact that modeling track tension is complex,a fuzzy logic decision making method is developed to estimate the proportion of various factors that have effect on track *** with least square method,we get track tension optimal estimation *** the low speed characteristic of the wheelchair as climbing stairs and the track tension got by estimation algorithm,the paper de-velops a statics model of the wheelchair for the starting stage of *** results prove that the wheelchair can climb stairs stably when it takes advantage of tension estimation algorithm.

关键词： Wheelchair Robot Climbing Stairs Optimally Estimation of Track Tension Statics

Structure and Stability of TiC/γ Interface inFe-Cr-Ni Base Composite

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Journal of Materials Science & Technology 1999年第2期15卷 151-154页

作者： Xidong HUI Yuansheng YANG and Xnqiang WU (Institute of Metal research, chinese Academia of Science, Shenyang 110015, china)Zhifu WANG(Shandong University of Technology, Jinan 250061, china)Xichen CHEN(Institute of Physics, chinese Academia of Science, Be Institute of Metal research Chinese Academia of Science Shenyang 110015 China Shandong University of Technology Jinan 250061 China Institute of Physics Chinese Academia of Science Beijing 100080 China

The morphology. orientation relationship and stability of TiC/γ interface in Fe-Cr-Ni base composite synthesized with a liquid state in-situ process have been studied. The TiC/γ interface in as-cast sample is of coherent feature. Its orientation relationship is (020)γ／／(220)TiC, [001]γ||[001]TiC. During the aging at 1473 K, the TiC/γ interface may dissolve in matrix and lamellar M23C6 compound may precipitate from γ-matrix.

关键词： Structure and Stability of TiC Base Cr Interface inFe-Cr-Ni Base Composite Ni

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移动机器人视觉定位方法的研究与实现

数据采集与处理 2004年第4期19卷 433-437页

作者：于秀芬段海滨龚华军南京航空航天大学自动化学院

针对移动机器人的局部视觉定位问题进行了研究。首先通过移动机器人视觉定位与目标跟踪系统求出目标质心特征点的位置时间序列 ,然后在分析二次成像法获取目标深度信息的缺陷的基础上 ,提出了一种获取目标的空间位置和运动信息的方法。... 详细信息

针对移动机器人的局部视觉定位问题进行了研究。首先通过移动机器人视觉定位与目标跟踪系统求出目标质心特征点的位置时间序列 ,然后在分析二次成像法获取目标深度信息的缺陷的基础上 ,提出了一种获取目标的空间位置和运动信息的方法。该方法利用序列图像和推广卡尔曼滤波 ,目标获取采用了 HIS模型。在移动机器人满足一定机动的条件下 ,较精确地得到了目标的空间位置和运动信息。仿真结果验证了该方法的有效性和可行性。

关键词：移动机器人运动信息视觉定位序列图像仿真结果特征点深度信息目标获取目标跟踪系统推广卡尔曼滤波

Standards for Mobile Internet Technologies

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ZTE Communications 2009年第4期7卷 27-30页

作者： Wu Wei, Wang Zhiqin (china academy of Telecommunication research of MIIT, beijing 100045 , P . R . china )

In order to ensure interoperability of basic mobile applications, the Open Mobile Association (OMA), from the perspective of mobile application, developed the mobile application layer technical standards for technology engines and carried out the interoperability test. From the perspective of fixed Internet, the World Wide Web Consortium (W3C) developed the technology standard based on basic Web applications, laying the foundation for Web-based mobile Internet applications. There are a number of important technology engines supporting mobile Internet services, including the engine for Internet access and download, the engine for providing status of mobile users and mobile terminals, the engine for community/group administration, the engine for mobile search, and the engine for classification-based content filtering.

关键词： Standards for Mobile Internet Technologies 王志勤

Ruin probability of the renewal model with risky investment and large claims

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Science china Mathematics 2009年第7期52卷 1539-1545页

作者： WEI Li School of Finance,Renmin University of china,beijing 100872,china School of Finance Renmin University of China Beijing China

The ruin probability of the renewal risk model with investment strategy for a capital market index is investigated in this *** claim sizes with common distribution of extended regular variation,we study the asymptotic behaviour of the ruin *** a corollary,we establish a simple asymptotic formula for the ruin probability for the case of Pareto-like claims.

关键词： asymptotics extended regular variation renewal risk model risky investment strategy ruin probability 60G70 60K30 60K37

Pendulum-Like Systems in Hilbert Spaces and Lagrange Stability

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Pendulum-Like Systems in Hilbert Spaces and Lagrange Stabili...

第25届中国控制会议

作者： Liu Chao, Huang Lin, Feng Dexing center for Systems & Control, Department of Mechanics & Engineering Science, Peking University, beijing 100871 center for Systems & Control, Department of Mechanics & Engineering Science, Peking University, beijing 100871 academy of Mathematics and Systems Science, chinese academy of sciences, beijing 100080

＜正＞In this paper, a class of pendulum-like systems in infinite dimensional Hilbert spaces is investigated. A frequency domain criterion guaranteeing the systems with the property of Lagrange stability is established.

关键词： Pendulum-like systems Multiple equilibria Infinite dimensions Lagrange stability

Psychological Influences of Blogging:Blog Use,Personality Trait and Self-concept

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Psychological Influences of Blogging:Blog Use,Personality Tr...

2010 IEEE 2nd Symposium on Web Society

作者： Chen Yue Institute of Psychology, chinese academy of sciences Graduate University of CAS Shi Kan Institute of Psychology, chinese academy of sciences School of Management, Graduate University of CAS Hu Xiaomeng School of Psychology, beijing Normal University Li Zhen School of Psychology, beijing Normal University

＜正＞There is a growing body of evidence indicating that individual differences and Internet usage have an interaction *** conducted a questionnaire survey of personal blog authors to extend this research to a popular online format for expression:Hogging. The results indicate that bloggers and non-bloggers share lots of similarities in personality-related ***,self-esteem is a major determinate to bloggers’ physical self-concept,while self-esteem,emotional intelligence,conscientiousness and neuroticism show direct effect on non-bloggers’ physical *** finding suggests that the impact of blog usage generates to personal psychological traits in daily life.

关键词： the Big Five personality Self-concept blog usage Multigroup comparison

Cardioprotective effects of ghrelin and des-octanoyl ghrelin on myocardial injury induced by isoproterenol in rats

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Acta Pharmacologica Sinica 2006年第5期27卷 527-535页

作者： LLian LI~2 Li-ke ZHANG~5 Yong-zheng PANG~(2.4) Chun-shui PAN~(3.4) Yong-fen QI~(3.4) Li CHEN~4 Xian WANG~(3,4) Chao-shu TANG~(3,4) Jing ZHANG~(2,4,6) ~2Institute of Cardiovascular research,Peking University First Hospital,beijing 100034,china:~3Department of Physiology and Pathophysiology,Peking University Health Science center,beijing 100083,china ~4Key Laboratory of the Ministry of Education on Molecular Cardiology,beijing 100083,china:~5Department of Pathophysiology,Capital University of Medicine,beijing 100054,china Institute of Cardiovascular research Peking University First Hospital Beijing China Department of Pathophysiology Capital University of Medicine Beijing China Key Laboratory of the Ministry of Education on Molecular Cardiology Beijing China Department of Physiology and Pathophysiology Peking University Health Science Center Beijing China

Aim:To determine the cardioprotective action of ghrelin and des-octanoyl ghrelinin rats with isoproterenol-induced myocardial ***:Rats were subcu-taneously injected with isoproterenol （ISO;20,10,and 5 mg/kg） on d 1,2 and 3,respectively,and then 3 mg/kg for the next 7d with or without ghrelin or des-octanoyl-ghrelin （100μg/kg,twice daily）.Plasma ghrelin and growth hormonelevels were assayed using radioimmunoassay *** hormone secreta-gogue receptor （GHSR） and ghrelin mRNA were determined using *** binding capacity and the affinity for [3H]ghrelin were determined by re-ceptor binding ***:Compared with controls,ISO-treated rats showedsevere myocardial injury,cardiomegaly,infarction-like necrosis and massive fi-brosis with increases in irradiated-ghrelin （ir-ghrelin） content in plasma by 67%and myocardia by 66% and in the mRNA level in the myocardia by 93% （P<0.01）.ISO-treated rats had 95% （P<0.01） higher GHSR mRNA levels in the *** maximal binding capacity of [3H]ghrelin for myocardial sarcolemma was higherin ISO-treated rats than in *** administration improved cardiac func-tion and ameliorated cardiomegaly and attenuated myocardial lipid peroxidationinjury and relieved cardiac fibrosis as compared with ISO treatment ***-istration of des-octanoyl ghrelin effectively antagonized ISO-induced myocardialinjury and improved all parameters ***,the therapeutic effect ofdes-octanoyl ghrelin was significantly weaker than that of *** plasmagrowth hormone level increased markedly,by 1.5-fold （P<0.01）,with ghrelinadministration as compared with that in controls,but was unaltered in the des-octanoyl ghrelin ***:Myocardial ghrelin and GHSR were up-regulated during ISO-induced myocardial *** protective effect of ghrelinagainst ISO-induced cardiac function injury and fibrosis was more potent thanthat of des-octanoyl ghrelin,which suggests that ghrelin could be an endog

关键词： ghrelin des-octanoyl ghrelin myocardium fibrosis isoproterenol