美国打造"全攻全守"太空战系统

美打造的地基激光系统、机载激光系统、太空拦截系统等太空战系统具备陆、空、太全程盯防对方导弹和全面威慑其他国家的能力。提起激光武器,多少让人觉得有些科幻色彩。但美国正一步步把激光武器变为现实,并准备应用到未来的太空战中。     

国产"太行"发动机性能优于苏-27

不论是军用还是民用飞机,发动机都是最关键的“心脏”部位。过去中国战机落后,首要因素是发动机制造水平低,最近一个局面已有改观。国产“太行”航空发动机的研制成功,称其具有“里程碑”意义。胡锦涛、温家宝及中央军委其他领导人都向参研单位和研发人员表示热烈祝贺,这在中国兵器发展史上是少见的。     

Healthy Functions and Mechanisms of Bamboo-Charcoal Modified Polyesters

In this paper, healthy fuactions and mechanismof bamboo-charcoal modified polyesters arc studied. Theresults show that there are five healthy functionsincorporated effectively in bamboo-charcoal modifiedpolyesters, such as good far-lnfrared radiation, good UVprotection, certain negative ion emission, certain anti-bacteria and good absorption functions. The metal elementsand carburets are mainly responsible for far-infrared,negative ion emission functions. UV prevention functionresults mainly from the carbon elements. The absorbabilityand bacteriostasis functions lie in the porous structures.     

Wet Permeability and Moisture Vapor Transmission Characteristics of Soybean Knitted Fabrics

Wet permeability of fibrous assembly is mainly influenced by the properties of liquid and the configurations of the fiber which consist of diameter of fiber, twist angle and fiber alignment in a yarn. It can be seen from experimental results that the knitted fabric made of soybean (SB) fiber has good properties both in wet permeability and vapor transmission so that the knitting technology and fabric characteristics can be improved.     

Study on Wet Permeability Models of Yarns and Knitted Fabrics

Water transport through the pore structure of the knitted fabric can occur only in place where the fiber-water surface attraction force is greater than the water weight in the capillary. To investigate wet permeability of the knitted yarn in the fabric, a liquid transport model is established. The main factors which have significant influences on the liquid transport have been analyzed. It is derived from the argument that the optimal design for the knitted fabric with quick sweat transport property can be obtained.     

Differential Capillary Effect Model of Fabric and Its Application

The concept of the differential capillary effect was presented by foreign scholars several years ago, and the principle was used to design sportswear fabrics with good wet permeability and good drying functions for famous sports teams. Because the differential capillary effect model was not established in theory, it was impossible to fulfill the best functions. In this paper, by setting up the differential capillary effect of fabric, the factors to influence wet permeability and drying functions of the model is discussed in theory, and the means to optimize the design of the fabric is presented and proven practically by the experiment. The optimum fabric with good permeability and good drying functions can be designed using the model at last.     

工程施工目标成本的动态控制

项目成本控制,指在项目成本的形成过程中,对生产经营所消耗的人力资源、物质资源及各种费用开支进行指导、监督、调节和限制,从而将各项生产费用控制在计划成本的范围之内,以保证成本目标的实现.     

织物差动毛细效应模型及应用

建立了织物差动毛细效应模型,从理论上探讨了织物里外层纤维线密度与附加压力差的关系,织物里外层厚度和纤维根数与液态水毛细运输流量的关系,织物里外层厚度与液态水毛细运输速度的关系,并用实验结论作了说明,从而提出了优化织物设计的思路。     

分布式模糊聚类微动法铁路路基岩溶地球物理探测： 以皖赣铁路宁国改线工程为例

微动勘探法可探查铁路路基地下岩溶、裂隙通道等不良地质体的发育位置,针对反演成果中土、岩体分界面模糊不清,异常位置及边界不准确等问题,采用分布式模糊聚类算法分析反演数据。系统回顾了微动勘探法和分布式模糊聚类算法基本原理,以皖赣铁路宁国改线某区间既有铁路路基岩溶勘察为例,开展分布式模糊聚类微动勘探进行地层分层、溶洞自动划分。将分布式模糊聚类法分析前后的反演数据同时与钻探揭露结果对比发现,分布式模糊聚类算法可对分界面、异常区域进行自动有效划定,可更加准确地识别地质异常体。说明该方法可较大程度提高微动反演数据的准确率,为铁路路基工程的设计和施工提供参考。     

胡同里的贵族生活

在繁华喧嚷的北京老城里,在纵横交错的胡同深处,老北京的四合院,仿佛被现代文明唤醒的、尘封了多时的记忆,悄然复兴。曾经被风雨侵蚀而黯然失色的朱漆大门又在重妆亮彩,只不过侯门深院告别了往昔森严的门第等级,用它记载着历史的高贵迎接着新的主人。