温河特大桥挂篮千斤顶预压法施工技术

文章以温河特大桥上部结构施工为例,提出了挂篮千斤顶预压法施工技术,介绍了挂篮预压的目的、方法、步骤及千斤顶的选择,并对预压成果进行了分析,最后得出该方案具有施工方便、安全、经济、精确、进度快等优点的结论。     

Panel Meeting for A3 Foresight Program 2008 held in Hangzhou

Jointly organized by the Bureau of International Cooperation,Department of Engineering & Material Sciences and Department of Mathematical & Physical Sciences of NSFC,the panel evaluation meeting for A3 Foresight Program for the year 2008 was held in Hangzhou from May 28 to 30,2008.     

Long-Range Topological Order in Metallic Glass

In June 17th issue of Science,Professor Jiang Jianzhong of Department of Material Sciences,Zhejiang University and his colleagues published a paper titled "Long-Range Topological Order in Metallic Glass". Prof.Jiang has received sustained support from NSFC since 2003. This article was co-authored by an international group of 9 researchers. According to the article,glass lacks the long-range periodic order that characterizes a crystal.In the Ce75Al25 metallic glass(MG),however,they discovered a long-range topological order corresponding to a single crystal of indefinite length.Structural examinations confirm that the MG is truly amorphous,isotropic, and unstrained,yet under 25 gigapascals hydrostatic pressures,every segment of a centimeter-     

Vice President Shen Wenqing Met with IFREMER Delegation

Prof. Shen Wenqing, Vice President of NSFC, met with President of French Research Institute for Exploitation of the Sea （IFREMER） on November 18, 2008. Prof. Han Jianguo, Director General of International Cooperation Bureau and Prof. Chai Yucheng, Deputy Director of the Earth Science Department also attended the meeting.     

市政工程建设项目施工技术方案优化

文章针对工程建设项目施工技术方案的分类和内涵进行了定义论述,提出了施工技术方案优化的目的、原则、方法与程序.     

基因合成的奠基人——哈尔·戈宾德·科拉纳

1953年,沃森和克里克DNA双螺旋模型的提出标志着分子生物学的诞生,而1958年克里克提出中心法则,进一步阐述了DNA发挥信息载体功能的机制.DNA中的遗传信息需要转换为蛋白质中的结构信息才可实现生物学功能,这其中涉及到一个关键问题,即DNA(或RNA)中的碱基序列决定蛋白质中氨基酸序列的秘密,科学家将"碱基顺序决定氨基酸顺序"这一特性称为遗传密码.20世纪60年代,破译遗传密码成为当时分子生物学领域最迫切需要解决的重大问题之一.1961年,美国国立卫生研究院的科学家尼伦伯格(Marshall Warren Nirenberg)首先应用大肠杆菌无细胞体系确定了第一个遗传密码,即UUU编码苯丙氨酸[1].1966年,所有64种遗传密码全部破译成功,世界多位科学家为此做出了卓越贡献,有两位科学家发挥了关键性作用,除尼伦伯格外,另一位就是美国籍印度裔科学家哈尔·戈宾德·科拉纳(Har Gobind Khorana)[2].     

市政工程建设项目施工技术方案优化

文章针对工程建设项目施工技术方案的分类和内涵进行了定义论述，提出了施工技术方案优化的目的、原则、方法与程序。     

电视新闻栏目品牌化问题浅析

对于电视台而言，品牌意识作为一种经营管理思想，贯穿在方方面面，文章从立台之本——电视新闻栏目入手，浅谈新闻栏目品牌的形成原因和如何打造新闻栏目品牌。     

基于高速公路通信专网的视频会议系统研究

在对山西高速公路视频会议系统建设目标和功能需求分析的基础上，对视频会议系统的方案进行了设计，并根据系统设计提出了利用华为ViewPoint视讯系统的实现方案及扩容升级方案。     

Eco-Industry： A New Pattern for Industrial Development

Eco -industry is a new pattern for industrial development. This paper briefly reviews the progress of eco -industry. The research work of Center for Industrial Ecology, Chemical Engineering Department, Tsinghua University is well introduced. Several academic issues that need further research are suggested from a system engineering point of view.     

NSFC Strengthens its Funding in Wenchuan

NSFC Earth Sciences Department is about to approve two Director＇s Fund projects to provide better scientific support to the rescue and relief efforts and collect first-hand data with major scientific significance in post-earthquake Wenchuan County, Sichuan Province. One project is on the relation between the stress field of post-earthquake （M=8.0） deformation and the strong aftershocks in Wenchuan County and the other is on the field investigation and studies on geological hazards and secondary disasters of blocking up river caused by earthquake in the County.     

XML数据访问与数据传输优化

由于XML有易用、可理解、跨平台的优点,可有效地解决跨平台数据的交换问题,以此设计一种安全的、能有效访问和快速更新的XML访问控制新方案。该方案利用多种授权实现了权限不同的多个用户灵活、安全访问XML文档数据,根据操作类型区分不同的数据传输请求,过滤掉不具权限的请求,以节省验证以及标记过程所耗费的内存等系统资源,实现了数据传输的优化。     

基于AT89S52的单片机开发板设计

单片机技术自发展以来已广泛应用于各个领域中,需求量巨大,产生了单片机开发板。本设计就是一种基于AT89S52单片机、实验程序源代码采用C语言编程方式、配套有电路原理图、液晶显示等功能的通用开发板。因为本设计中所有单片机输入、输出端口开放,能够满足在校学生学习单片机开发、爱好者进行单片机设计等功能。     

Vice President Wang Jie Met with Vice President of the Royal Society of Edinburgh

Prof. Wang Jie, NSFC Vice President, met with Prof. Tariq Durrani, Vice President of the Royal Society of Edinburgh, on May 21, 2008. They held talks on issues concerning bilateral workshops and joint projects to be funded in 2009, and agreed upon the areas to launch the joint call for proposals, as well as deadlines for proposal submission and approval. Prof. Zhang Wei, Deputy Director General of the Department of Management Science, and other NSFC staff attended the meeting.     

Progress in synthesizing functional nano materials

With the consistent investment, the research team directed by Prof. Yadong Li of Chemistry Department of Tsinghua University achieved new progress in synthesizing nano materials with specific functions. The research team led by Prof.     

Vice President Shen Wenqing Met with US Science Dean Delegation

NSFC Vice President Prof. Shen Wenqing met with an US science dean delegation on 21 October, 2008. Prof. Shen briefed the delegation on NSFC＇s profile of international cooperation with the United States, followed by discussions on how to better develop China-US collaboration in science and technology and how to encourage US students to do research in China. Dr. Alex DeAngelis, the new Director of NSF Beijing Office, joined the delegation. NSFC staff from the Department of Mathematical and Physical Sciences and Bureau of International Cooperation attended the meeting.     

太中银线吕梁段方案研究

文章以太中银线吕梁段方案为例,分析了影响线路方案的主要因素,强调了线路选线过程中的主要技术标准以及与地方规划协调的重要性。     

VB在预应力张拉伸长量计算中的应用

结合工程实例，介绍一种用VB或VBA编辑器进行编程计算预应力钢绞线张拉伸长量的方法，对该方法的原理、功能及程序设计的原理进行了详细的论述。     

ActionScript在科技交流平台中的应用

阐述了基于ActionScript的Flash技术在开发交流平台前台程序的基本思路,主要探讨了Flash与后台数据的交互问题,实现了Flash技术在科技交流平台中的具体应用,并为开发交流平台提供了一种新的方法和工具,具有一定的参考价值。     

运营期桥梁结构性能的检测与评价

以现行的设计规范为基础,结合实桥检测的结果对结构失效模式的影响,提出桥梁检测的项目和方法,以及桥梁承载能力评估方法。