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Since Beijing urban Intelligent Transportation Management Systems(ITMS) have been put into use,its operation effects as ......
【Abstract】Karl Popper explained the scientific knowledge heads from the problem, proposed criteria of demarcation of sc......
目的:对三白草药材不同药用部位中的三白草酮含量进行分析比较。方法:采用Welch ultimate LP-C18色谱柱(4.6 mm×250 mm,5μm),流......
The purpose of building a resource-conserving society is to pursuit less resource consumption and less environmental pol......
English is one of the most important foreign languages taught in universities in China. However, the results are often f......
A principal-agent relationship exists among creditors,shareholders and management,and information asymmetry among them l......
To investigate the seismic behavior of concrete-filled rectangular steel tube (CFRT) structures, a push-over analysis of......
The damage evolution in steel reinforced high strength concrete(SRHSC) frame columns was studied based on the test resul......
This paper involves a series of destructive full-scale load tests on long bored piles instrumented with strain gauges al......
One of the potential solutions to steel-corrosion-related problems is the usage of fiber reinforced polymer (FRP) as a r......
Previous studies have shown that product market competition has an important effect on corporate strategies and internal......
Neglected tropical diseases(NTDs) are remediable injustices of our times. Poverty is the starting point, and the ultimat......
The finite element limit analysis method has the advantages of both numerical and traditional limit equilibrium techniqu......
The mechanisms of theion reaction of alkylidenegermylene with oxirane and thiirane have been characterized detail in usi......
【Abstract】Business negotiation refers to the activities of different economic entities for their own economic interest......
The experiments were carried out to measure the mechanical properties of three grades of structural steels (Q235A, 16Mn......
This study, taking three types of aluminum alloys 2024-T351, 6061-T6 and 7075-T6 as experimental materials, conducted si......
Since Y has a great solid solubility in magnesium alloys, it helps enhancing the heat-resistant property of magnesium al......
In this paper,the product designs,mechanical properties and microstructure of ultra-high strength linepipe steel in grad......
Ti-24Nb-4Zr-8Sn, abbreviated as Ti2448 from its chemical composition in weight percent, is a multifunctional β type tit......
The mechanical properties and fracture behaviors of 6061 aluminum alloy were investigated by the tensile shear tests and......
对于偶发性地震载荷过分保守的处理导致核电厂管道系统使用大量的阻尼器、支吊架而使管道系统刚性过大,使核电厂的制造、安装、在......
Advertising is a key point for enterprises carrying out fierce competition to dominate the big market, which generally a......
【摘要】对于广告英语的研究越来越多的人参与了进来,也有了一定的进步,自然语言中的一种属性包括模糊语言,在广告英语中应用广泛,广告......
As the flat panel displays (Liquid Crystal Displays, AMOLED, etc.) reach near perfection in their viewing qualities and ......
In recent years, advanced composite structures are used extensively in many industries such as aerospace, aircraft, auto......
The use of wash oil as a coal collector is proposed to overcome the disadvantages of regular collectors in coal slime fl......
The ultimate detection performance of HgCdTe, quantum well (QW) and extrinsic Si detectors under low temperatures is ana......
The association between corporate governance and firm value has been extensively studied in Chinese listed firms. Based ......
摘 要:本文在对《The ultimate ownership of Western European corporations》这篇文章进行总结的基础上,对中国上市公司最终所有权......
针对圆形浅基础地基承载力,采用极限分析法上限定理推导出圆形浅基础的承载力公式。公式推导过程中,考虑土体重力做的功,假定地基......
为研究多层加筋垫层自身极限承载特性,考虑多层土工格栅的加筋作用,假设加筋垫层为层合板,并根据静力平衡条件和应变连续条件,分析......
预应力混凝土结构多用在大跨、重载结构中,因此预应力混凝土结构的抗火性能应该更加引起人们的关注.在合理假定的基础上,采用二台......
Spontaneous combustion of coal is a well-known phenomena around the globe.Apart from the coal itself,burning coal-shales......
以虚拟层合单元程序为基础,综合考虑结构的几何非线性和材料非线性,对一典型5跨简支连续小箱梁桥结构的极限承载力进行了分析,重点......
为了深入认识α-Fe中氦泡冲出位错环的微观机制,有必要研究α-Fe中氦泡冲出位错环时的极限压强特性.本文建立金属-氦泡的立方体型......
进行了13根以偏心率为参数的钢管混凝土格构短柱试验,其中11根为偏心受压,2根为偏心受拉.试验结果表明,腹杆受力较小,处于弹性阶段......
应用材料非线性和几何非线性有限元法对空间XK形节点圆管相贯节点进行了数值计算,分析了节点在荷载作用下应力的发展、变化过程及......
主要介绍了一种新型截面的钢结构构件的试验分析.该截面由3块钢板和3个在角点处设置的钢管组成,围成一中空的三角形截面,分别进行......
人的发展与社会发展具有深刻的一致性.从发展的主体向度看,社会发展就是人的发展,它是人为的发展和为人的发展的统一;社会发展的终......
Jack-up platforms of the Ocean engineering structures always withstand the vertical gravity loads which are applied to t......
采用四节点壳单元对T、Y型方圆直接相贯管节点进行非线性分析,旨在研究此类节点的受力性能和塑性区扩展过程,分析讨论节点破坏机理......
采用非线性有限元方法,基于梁理论的纤维单元模型.考虑钢管混凝土的几何非线性和材料非线性因素,建立弹塑性分析方法.应用该方法对哑铃......
活性粉末混凝土(Reactive Powder Concrete,RPc)是新一代超高强、高耐久性、高韧性的复合材料,它所具有的众多特性使之具有广阔的工程......
相贯节点是空间架构的重要组成部分。论文以某旅游码头综合楼为研究对象,采用ANSYS软件对空心铸钢的相贯节点进行了非线性有限元分......
介绍了钢管混凝土极限承载力计算方法的研究历程:从简单公式模拟到通过大量试验得到大量数据而后回归出各种通用近似公式,再到现在......
针对铝合金悬挂式整体壁板板格长宽比特别大的特点,文章建立此类板格的非线性有限元模型,进行纵向、横向和剪切载荷作用下的极限强......
本文考虑了一个非自治的扩散的捕食者一食饵系统,种群之一可以在两块斑块间扩散,其他两种则限定于一块斑块,不能扩散.本文证明了在......