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| 1 | A complex variable meshless method for fracture problems显示文摘Based on the moving least-square (MLS) approximation, the complex variable moving least-square approximation (CVMLS) is discussed in this paper. The complex variable moving least-square approximation cannot form ill-conditioned equations, and has greater precision and computational efficiency. Using the analytical solution near the tip of a crack, the trial functions in the complex variable moving least-square approxi- mation are extended, and the corresponding approximation function is obtained. And from the minimum potential energy principle, a complex variable meshless method for fracture problems is presented, and the formulae of the complex variable meshless method are obtained. The complex variable meshless method in this paper has greater precision and computational efficiency than the conventional meshless method. Some examples are given. | CHENG Yumin1 & LI Jiuhong2 1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China 2. Department of Building Engineering, Xi’an University of Technology, Xi’an 710048, China | 2006 | Science China(Physics,Mechanics & Astronomy)2006，49，1： | 15 |
| 2 | 我国大陆2009年底已建成180m以上高层建筑统计显示文摘 | Council on Tall Buildings,Structural Branch,Architectural Society of China | 2010 | 土木工程学报2010，43，5： | 12 |
| 3 | A Novel Semiconductor CIGS Photovoltaic Material and Thin-Film ED Technology显示文摘In order to achieve low cost high efficiency thin film solar cells,a novel Semiconductor Photovoltaic (PV) active material CuIn 1-x Ga x Se 2 (CIGS) and thin film Electro Deposition (ED) technology is explored.Firstly,the PV materials and technologies is investigated,then the detailed experimental processes of CIGS/Mo/glass structure by using the novel ED technology and the results are reported.These results shows that high quality CIGS polycrystalline thin films can be obtained by the ED method,in which the polycrystalline CIGS is definitely identified by the (112),(204,220) characteristic peaks of the tetragonal structure,the continuous CIGS thin film layers with particle average size of about 2μm of length and around 1 6μm of thickness.The thickness and solar grade quality of CIGS thin films can be produced with good repeatability.Discussion and analysis on the ED technique,CIGS energy band and sodium (Na) impurity properties,were also performed.The alloy CIGS exhibits not only increasing band gap with increasing x ,but also a change in material properties that is relevant to the device operation.The beneficial impurity Na originating from the low cost soda lime glass substrate becomes one prerequisite for high quality CIGS films.These novel material and technology are very useful for low cost high efficiency thin film solar cells and other devices. | ZHENG Guang fu 1,YANG Hong xing 1,MAN Cheuk ho 1,WONG Wing lok 2, AN Da wei 1 and John BURNETT 1(1 Centre for Development of Solar Energy Technology,Department of Building Services Engineering, The Hong Kong Polytechnic University,Hong Kong,C | 2001 | Journal of Semiconductors2001，22，11： | 10 |
| 4 | Current progress in epigenetic research for hepato-carcinomagenesis显示文摘Hepatocellular carcinoma is the main type of primary liver cancer,and also one of the most malignant tumors.At present,the pathogenesis mechanisms of liver cancer are not entirely clear.It has been shown that inactivation of tumor suppressor genes and activation of oncogenes play a significant role in carcinogenesis,caused by the genetic and epigenetic aberrance.In the past,people generally thought that genetic mutation is a key event of tumor pathogenesis,and somatic mutation of tumor suppressor genes is in particular closely associated with oncogenesis.With deeper understanding of tumors in recent years,increasing evidence has shown that epigenetic silencing of those genes,as a result of aberrant hypermethylation of CpG islands in promoters and histone modification,is essential to carcinogenesis and metastasis.The term epigenetics refers to heritable changes in gene expression caused by regulation mechanisms,other than changes in the underlying DNA sequence.Specific epigenetic processes include DNA methylation,genome imprinting,chromotin remodeling,histone modification and microRNA regulations.This paper reviews recent epigenetics research progress in the hepatocellular carcinoma study,and tries to depict the relationships between hepatocellular carcinomagenesis and DNA methylation as well as microRNA regulation. | HUANG Jian National Human Genome Research Center at Shanghai-Ministry of Science and Technology to build a healthy and disease Ge-nomics Laboratory,Shanghai 201203,China | 2009 | Science China(Life Sciences)2009，52，1： | 9 |
| 5 | Design optimization of cast Cu-Al-Be-B alloys for high damping capacity显示文摘This paper investigated high-damping Cu-Al-Be-B cast alloys using metallographic analysis, X-ray diffraction (XRD) and electrical resistance measurements for transformation temperatures. The results showed that beryllium can stabilize β phase, resulting in a thermo-elastic martensite microstructure leading to high-damping capacity in cast Cu-Al-Be-B alloys. Trace additions of boron to Cu-Al-Be alloys can significantly refine the grains, providing high strength and ductility to the alloys. A factorial design of experiment method was used to optimize the composition and properties of cast Cu-Al-Be-B alloys. The optimal microstructure for thermo-elastic martensite can be obtained by adjusting the amounts of aluminum and beryllium to eutectoid or pseudo-eutectoid compositions. An optimized cast Cu-Al-Be-B alloy was developed to provide excellent mechanical properties, tensile strength σ_b=767MPa, elongation δ=7.62%, and damping capacity S. D. C=18.70%. | ~*S. Lu~(1,2), W. H. Miao~1, J. Chen~1, P. H. Lin~2 (1. Department of Materials Engineering, East China Ship Building Institute of Technology, Zhenjiang 212003, Jiangsu, P. R. Chine 2. Department of Mechanical Engineering, Southeast University, Nonjing 210096, Jiangsu, P. R. Chine) | 2004 | China Foundry2004，1，S1： | 8 |
| 6 | 高层结构空间有限元分析新模型—SATWE显示文摘在高层结构分析中,对剪力墙和楼板的模型化假定是其关键问题,它直接决定了高层结构分析模型的科学性,同时也决定了分析软件的精度和可信度.本文在四节点等参壳元的基础上,应用静力凝聚方法,构造了允许带有任意方洞口的通用墙元,提出了以墙元为核心的高层结构分析模型,并据此模型研制了复杂体型高层结构空间有限元分析软件SATWE.SATWE分析精度高,求解速度快,前、后处理功能强,便于在工程中推广应用. | Dept. of CAD Engineering China Academy of Building Research | 1996 | 土木工程学报1996，29，3： | 7 |
| 7 | A numerical study on fire endurance of wood beams exposed to three-side fire显示文摘To investigate the fire endurance of wood beams exposed to three-side fire, we conducted bearing capacity tests of two wood beams and experiments of five wood beams exposed to three-side fire. The finite element software ANSYS was also used to predict the fire endurance of those beams with the indirect order coupling method. It was found that the fire endurance decreases as the load level increases, and the reduction ratio tends to decrease. In the case of a certain load level, the fire endurance is improved if the section size is increased or covered by the fire protection coating. The central deformation increases as the fire duration increases, and the ratio of increase tends to rise. On another note, an increase in the density of wood leads to a rise in the fire endurance of a given beam. From the finite element method (FEM) calculation results, the fire endurance decreases as the load level increases, and the reduction ratio tends to decrease. When the load level is greater than 0.5, the fire endurance is significantly reduced, and it does not change significantly when the load level changes. Lastly, for a load level magnitude below 0.5, the fire endurance and load level are proportional to one another. | Jin ZHANG 1, Qing-feng XU2, Yi-xiang XU3, Bin WANG1, Jing-xiang SHANG1 (1Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing 210096, China) (2Shanghai Key Laboratory of New Technology Research on Engineering Structure, Shanghai Research Institute of Building Sciences, Shanghai 200032, China) (3Department of Civil Engineering, Strathclyde University, Glasgow G12 8QQ, UK) | 2012 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2012，13，7： | 5 |
| 8 | Algorithms for k-fault tolerant power assignments in wireless sensor networks显示文摘This paper addresses fault-tolerant many-to-many routing power assignments in heterogeneous wire-less sensor networks.We introduce the k-fault tolerant power assignments problem with the objective of assigning each sensor node transmission power such that(1) any pairwise sensor node is k-vertex connected and(2) the to-tal power consumption is minimized.We propose three solutions for this problem:two centralized algorithms,a greedy algorithm and an O(√n/ε)-approximation algorithm,and an h-hop distributed and localized algorithm.Related theorems and proofs are presented to prove the correctness of our approaches.Furthermore,simulation and experiment results are presented to verify the efficiency of our approaches. | LIU Li 1,2,LI Lian 1,3 & HU Bin 1,4 1 School of Information Science and Engineering,Lanzhou University,Lanzhou 730000,China 2 LRI,Univ Paris-sud and CNRS,Orsay F-91405,France 3 School of Computer and Information,Hefei University of Technology,Hefei 230009,China 4 Department of Computing,Birmingham City University,Galton Building,Perry Barr,Birmingham B42 2SU,UK | 2010 | Science China(Information Sciences)2010，53，12： | 5 |
| 9 | Revision of seismic design codes corresponding to building damagesin the “5.12” Wenchuan earthquake显示文摘A large number of buildings were seriously damaged or collapsed in the '5.12' Wenchuan earthquake. Based on field surveys and studies of damage to different types of buildings, seismic design codes have been updated. This paper briefly summarizes some of the major revisions that have been incorporated into the 'Standard for classification of seismic protection of building constructions GB50223-2008' and 'Code for Seismic Design of Buildings GB50011-2001.' The definition of seismic fortification class for buildings has been revisited, and as a result, the seismic classifications for schools, hospitals and other buildings that hold large populations such as evacuation shelters and information centers have been upgraded in the GB50223-2008 Code. The main aspects of the revised GB50011-2001 code include: (a) modification of the seismic intensity specified for the Provinces of Sichuan, Shanxi and Gansu; (b) basic conceptual design for retaining walls and building foundations in mountainous areas; (c) regularity of building configuration; (d) integration of masonry structures and precast RC floors; (e) requirements for calculating and detailing stair shafts; and (f) limiting the use of single-bay RC frame structures. Some significant examples of damage in the epicenter areas are provided as a reference in the discussion on the consequences of collapse, the importance of duplicate structural systems, and the integration of RC and masonry structures. | Wang Yayong Institute of Earthquake Engineering, China Academy of Building Research, Beijing 100013, China | 2010 | Earthquake Engineering and Engineering Vibration2010，9，2： | 5 |
| 10 | Integrin betal mediates hepatocellular carcinoma cells chemotaxis to laminin显示文摘BACKGROUND: Chemotaxis is an important step durin the invasion of carcinoma cells. And integrins are most im portant receptors mediating interaction between cells an extracellular matrix ( ECM). This study was designed t study integrin betal mediating chemotaxis of hepatocellula carcinoma (HCC) cells to laminin (LN). METHODS: A micropipette technique was adopted to in vestigate the effect of blockade of integrin betal on pseudo pod protrusion of HCC cells in response to LN stimulation Chemotactic pseudopod protrusion of a HCC cell was eva luated using a dual-pipette set-up, in which two pipette filled with LN solution were positioned in close contact wit the same cell, and pseudopod protrusion into each pipett was viewed dynamically and recorded with a tape recorder The lengths of pseudopods were measured and plotte against time to obtain a pseudopod growth curve. The in tegrin betal subunit on the surfaces of HCC cells were ana lyzed by flow cytometry. RESULTS: In dual pipette chemotaxis experiment, whe the two pipettes were filled with LN(50 μg/ml, 200 μg/ml) pseudopods extended from the HCC cell into each of th pipettes nearly symmetrically, ie, with nearly identica maximum pseudopod length and similar pseudopod growth curves. Upon addition of anti-CD29 (20 μg/ml) to one o the pipettes, pseudopod protrusion was blocked nearly completely while protrusion into the opposite pipette be came more evidently, with a larger maximum length. Ex pression of integrin betal was up to 95.78% to cells chosen in the experiment. CONCLUSION: Integrin betal subunit was an importan constituent receptor subunit for mediating chemotactic pseudopod protrusion of HCC cell to LN. | Bian-Hong Fu, Ze-Zhi Wu and Cheng Dong Chongqing, China College of Bioengineering, Key Lab for Biomechanics and Tissue Engineering under the State Ministry of Education and College of Resources & Environmental Science , Chongqing University, Chongqing 400044, China Bioengineering Pro- gram, Pennsylvania State University, 205 Hallowell Building, University Park, Pennsylvania 16802-6804, USA | 2004 | Hepatobiliary & Pancreatic Diseases International2004，3，4： | 4 |
| 11 | NUMERICAL STUDY ON AIR FLOW AROUND AN OPENING WITH LARGE EDDY SIMULATION显示文摘Jet characteristics of air supply opening in a ventilating or an air-conditioning system is primarily decided by the folw state in the duct connected to the opening. It is valuable to study the opening jet characteristics and the flow state in a duct. In this study, the Large Eddy Simulation (LES) technique combined with the Tarlor-Galerkin Finite Element Method (FEM) in Computational Fluid Dynamics (CFD) was applied to the problem. The 3-D flow fields in ducts around air supply opening under typical conditions were investigated by numerical simulation as well as experimental measurements. Numerical results agree well with the available experimental data. It indicates that the LES method is available under the conditions with complicated boundaries and inner accompanied by anisotropic large-scale eddies, and it is credible to predict the jet deflection characteristics around an opening. | Fan Hong-ming, Ren Hong-ze, Li Xian-ting, Yi JiangDepartment of Building Science, Tsinghua University, Beijing 100084, China, e-mail:xting li @ tsing-hua.edu.cn | 2003 | Journal of Hydrodynamics2003，15，6： | 4 |
| 12 | EPIGENETIC NATURE OF RADIATION CARCINOGENESIS AT LOW DOSES显示文摘The present paradigm of radiation-induced carcinogenesis has been based on somatic mutation theory initiating a mutation in somatic cells derived from DNA damage by ionizing radiation. A non-threshold linear model has been assumed from high doses to low doses. As an alternative to this, we are proposing a new model that epigenetic changes induced by low dose irradiation may be a first step of carcinogenesis. Our preliminary data suggesting the epigenetic nature and reports on various stress response to ionizing radiation are presented. | T. Sugahara and M. WatanabeHealth Research Foundation. Pasteur Building 5F. 103-5 Tanaka Monzencho. Sakyo-ku. Kyoto 606. JapanFaculty of Pharmaceutical Sciences. Nagasaki University. 1-14 Bunkyo-machi, Nagasaki 852, Japan | 1994 | Chinese Medical Journal1994，，6： | 4 |
| 13 | Plans and Measures for Avoiding Casting-Air-Pollution显示文摘This article presents plans of preventi ng casting-air-pollution in practice, and some avoiding methods in detail. In mo dern times, environment protection is looked high upon day by day; green-castin g thus becomes more and more important. | ZHOU Jian Department of Mechanical Engineering, Hunan Building Material College , Henyang 421008, P.R.China | 2003 | International Journal of Plant Engineering and Management2003，8，3： | 4 |
| 14 | CATALYTIC RESEARCH FOR CLEAN ENERGY AND ULTRA-CLEAN FUELS IN THE 21^(st) CENTURY Future Perspectives显示文摘本文系由大连理工大学王祥生教授 (本刊编委 )和郭新闻教授约请美国宾州大学宋春山博士撰写的“2 1世纪清洁能源和超清洁燃料催化研究的未来展望”述评。在本文中笔者系统而扼要地回顾了 2 0世纪全球能源消耗及供求的情况 ,展望了 2 1世纪催化研究面临的机遇 ,着重讨论了清洁能源 ,对催化而言应把综合和有效利用能源作为研究方向。笔者结合美国情况介绍了许多有用的统计数字 ,重点结合自己的研究工作比较全面地阐述了能源燃料工业对催化研究的需求及其机遇。它包括了清洁运输燃料、重油轻质化增产中间馏分油、制氢和燃料电池、天然气利用、天然气液化、替代燃料的发展、煤的综合利用、专用化学品的合成以及CO2 的转化和利用等。煤既作为生产清洁燃料的原料 ,又作为生产专用化学品的资源 ,把在炼油化工中已经取得卓越成果的催化技术、分子筛催化过程转移到煤化工领域 ,笔者对此提出了比较完整的方案。这些对于读者都有很大的帮助。 | Chun-shan SONG (Clean Fuels and Catalysis Program, The Energy Institute, and Department of Energy & Geo-Environmnetal Engineering, Pennsylvania State University, 209 Academic Projects Building, University Park, PA 16802, USA) | 2002 | 石油学报(石油加工)2002，18，6： | 4 |
| 15 | Prokaryote phylogeny meets taxonomy: An exhaustive comparison of composition vector trees with systematic bacteriology显示文摘We perform an exhaustive, taxon by taxon, comparison of the branchings in the composition vector trees (CVTrees) inferred from 432 prokaryotic genomes available on 31 December 2006, with the bacte-riologists' taxonomy-primarily the latest online Outline of the Bergey's Manual of Systematic Bacteri-ology. The CVTree phylogeny agrees very well with the Bergey's taxonomy in majority of fine branchings and overall structures. At the same time most of the differences between the trees and the Manual have been known to biologists to some extent and may hint at taxonomic revisions. Instead of demonstrating the overwhelming agreement this paper puts emphasis on the biological implications of the differences. | GAO Lei1,2, QI Ji1**, SUN JianDong2,3 & HAO BaiLin1,2,4 1 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China 2 T-Life Research Center, Fudan University, Shanghai 200433, China 3 Beijing Genomics Institute, Chinese Academy of Sciences, Beijing 101300, China 4 Santa Fe Institute, Santa Fe, NM87501, USA Center for Comparative Genomics and Bioinformatics, Penn State University, 310 Wartik Building, University Park, PA16802, USA | 2007 | Science China(Life Sciences)2007，50，5： | 4 |
| 16 | 医院门诊药房与医院分离的理性探讨显示文摘介绍了医药分业的定义、国外医药分业的目的和少数医院无门诊药房的原因。指出门诊药房从医院分离出去弊大于利,认为门诊药房从医院分离,难以达到预期目的,反而有损于医疗卫生事业的公益性;医药分离削弱、甚至取消了医院对医师不当处方和合理药物治疗等医疗行为的行政和技术监管与干预;医药分离不适合我国的国情,不符合我国卫生体制改革的精神,不利于医疗质量的提高,不利于病人安全、有效、经济用药,不利于调动医院广大药学技术人员的积极性,不利于医院药物治疗管理自动化的实现与信息的传递。建议医药结合的模式必须加强;保留门诊药房,加大监督力度;建立药品配送中心,完善社会化物流机制;加速非处方药药品的发展;在条件成熟后实施处方调剂费;高薪养廉,较大幅度提高医师职业的收入;解决当前医疗体系中分配不合理问题,适当提高挂号、手术、诊疗等收费标准,降低药品收入在医院总收入中所占的比例。 | Pharmacy Administration Commision of CHA, Multiple Functions Building, Tiantan Hospital, 6 Tiantanxili, Chongwen District, Beijing City, 100853.PRC | 2003 | 中国医院2003，7，4： | 4 |
| 17 | Influence of Al Composition on the Microstructure of B Alloyed Ni_3Al Synthesized under Compression显示文摘It was shown by TEM and X-ray analysis that Ni3Al is the main phase of the intermetallic synthesized under compression from the powder mixture of Ni with Al alloyed by B. The Ni3B is a secondary phase. The value of the lattice parameter of the intermetallic Ni3Al with and without B increases when the concentration of Al increases. The increase in Al concentration from 23.5 to 25.0 in the initial powder mixture leads to decreasing the solubility of B in the Ni3Al phase. | M.V.Fedorischeva, O.B.Perevalova and V.E.Ovcharenko Institute of Strength Physics and Materials Science, Russian Academy of Sciences, Siberian Branch 634021, Tomsk, Russia B. V.Kozlov State University of Architecture and Building, Solyanaya Sq.2, 634003, | 2001 | Journal of Materials Science & Technology2001，17，2： | 3 |
| 18 | Spatial and temporal regulation of collagenases-3, -4,and stromelysin -3 implicates distinct functions in apoptosis and tissue remodeling during frog metamorphosis显示文摘Matrix metalloproteinases (MMPs) are a family of extracellular proteases capable of degrading various proteinaceous components of the extracellular matrix (ECM).They have been implicated to play important roles in a number of developmental and pathological processes, such as tumor metastasis and inflammation. Relatively few studies have been carried out to investigate the function of MMPs during postembryonic organ-development. Using Xenopus laevis development as a model system, we demonstrate here that three MMPs, stromelysin-3 (ST3),collagenases-3 (Col3), and Col4, have distinct spatial and temporal expression profiles during metamorphosis as the tadpole transforms into a frog. In situ hybridizations reveal a tight, but distinct, association of individual MMPs with tissue remodeling in the tail and intestine during metamorphosis. In particular, ST3 expression is strongly correlated with apoptosis in both organs as demonstrated by analyses of serial sections with in situ hybridization for ST3 mRNA and TUNEL (terminal deoxyribonucleotidyl transferase-mediated dUTP-biotin nick end labeling) for apoptosis, respectively. On the other hand, Col3 and Col4 MMPs in Xenopus laevis development are present in regions where extensive connective tissue remodeling take place. These results indicate that ST3 is likely to play a role in ECM-remodeling that facilitateapoptotic tissue remodeling or resorption while Col3 and Col4 appear to participate in connective tissue degradation during development. | DAMJANOVSKI SASHKO ATSUKO ISHIZUYAOKA YUN-BO SHI (Laboratory of Molecular Embryology, Building 18T, Rm. 106, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, 20892, USA)(Department Of Histology and | 1999 | Cell Research1999，9，2： | 3 |
| 19 | Features of long-term health monitored strains of a bridge with wavelet analysis显示文摘This paper analyses the five years' monitored strains collected from a long-term health monitoring system installed on a bridge with wavelet transform.In the analysis,the monitored strains are pre-processed,features of the monitored data are summarized briefly.The influences of the base functions on the results of wavelet analysis are studied simultaneously.The results show that the db wavelet is a good mother wavelet function in the analysis,and the order N should be larger than 20,but less than 46 in decomposing the monitored strains of the bridge.According to the strain variation features of concrete bridge,the proper decomposition level is 4 in the wavelet multi-resolution analysis.With the present method,the strains caused by random loads and daily sunlight can be accurately extracted from the monitored strains.The decomposed components of the monitored strains show that the amplitudes of the strains caused by random loads,daily sunlight,and annual temperature effect,are about 5 με,25 με,and 50 με respectively.The structural response under random load is smaller than the other parts. | Zejia Liu,Bin Jiang,Liqun Tang,Yiping Liu,Chunyu Zhang,and Yinghua Li School of Civil Engineering and Transportation,State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,China | 2011 | Theoretical & Applied Mechanics Letters2011，1，5： | 3 |
| 20 | Asymptotic Analysis Methods for Structural Reliability显示文摘- Applying Laplace asymptotic approximation of integral, asymptotic analysis methods of structural reliability are proposed in generalized and orthogonal random space. Analytic results show that the proposed methods are simple in calculation and accurate enough for problems of continuous random variables. | Zhao Guofan , Li Yungui Wang Hengdong Professor, Dept. of Civil Engineering, Dalian University of Technology, Dalian 116024 Ph. Doctor, China Academy of Building Research, Beijing 100013 Ph. Doctor, Dept. of Civil Engineering, Dalian University of Technology, Dalian 116024 | 1995 | China Ocean Engineering1995，10，3： | 3 |
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