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The intrinsic relationships between energy dissipation,energy release,strength and abrupt structural failure are key to ......
The Haihe River basin is widely recognized as an area in China which is most severely affected by human activities.The w......
Taoer River Basin, which is located in the west of Northeast China, is an agropastoral ecotone. In recent years, the hyd......
BACKGROUND:Continuous hemorrhage or hematoma enlargement often occurs following cerebral hemorrhage attacks. OBJECTIVE: ......
Bamboo and Rattan(B&R) resources play a very important role for ecological and economical development as the two most im......
Dynamic avalanche behavior of power MOSFETs and IGBTs under unclamped inductive switching conditions
The ability of high-voltage power MOSFETs and IGBTs to withstand avalanche events under unclamped inductive switching(UI......
The work presented in this paper is a study of output temporal contrast degradation by near-field quality deterioration,......
Ti50.6Pd30Ni19.4 and Ti51Pd28Ni21 (Ce) alloys have been prepared under various temperatures for long time annealing. Di......
目的探讨BP神经网络(BPNN)模型分析在儿童手足口病重症化危险因素预测中的作用,为手足口病的临床诊断提供参考依据。方法整群抽取......
Bamboo culms are an excellent material for countless applications. Their wider use for construction is encouraged by the......
Corrosion is one of the main causes of deterioration in steel structures. Loss of thickness in flanges and web of corrod......
Land Use/Land Cover Change(LUCC) and Eco-Environment Response to LUCC in Farming-Pastoral Zone,China
In order to understand land use/land cover changes(LUCC) and the eco-environment response to LUCC in farming-pastoral zo......
The damage evolution in steel reinforced high strength concrete(SRHSC) frame columns was studied based on the test resul......
<正>1脑卒中后早期神经功能恶化(early neurological deterioration,END)概念演变及其诊断标准神经功能缺损包括原发性脑功能障碍(......
Although flexible manipulators own many potential advantages, one of their major disadvantages is the deterioration of t......
With brilliant civilization during the transitional period from a original clan society to a state society in prehistory......
The dependence of sintering temperature on Schottky barrier and bulk electron traps of ZnO varistors
In order to investigate the influence of sintering temperature on the Schottky barrier and bulk electron traps of ZnO va......
This study seeks to develop a scientific understanding of the effects of dynamic loading history on the low-yield-streng......
The oxidation behavior of high speed steel (HSS) was researched by high temperature thermo balance at 500 to 800 °C in ......
Small-sized axial fans are used as air coolers for electric equipments.But there is a strong demand for higher power of ......
Long-term deterioration of lubricant-infused nanoporous anodic aluminium oxide surface immersed in N
This study investigated the deterioration of a lubricant-infused anodic aluminium oxide surface in a 1 M NaGl solution f......
目的:快速鉴别依巴斯汀是否发生光变质或过期变质。方法:运用激光拉曼光谱分别检测未变质、被激光和太阳光照射、以及过期的依巴斯......
This paper investigates how to reduce the cost of wavelength division multiplexing passive optical network(WDMPON) by co......
对某软土地区地铁盾构隧道进行了调研与分析,发现盾构隧道在现有计算理论所允许的地表超载作用下极易发生横向变形超限,并引发管片......
Preliminary investigation of late Mughal period wall paintings from historic monuments of Begumpura,
Deterioration of wall paintings caused by environmental pollution is a worldwide problem especially with reference to th......
采用超景深光学显微镜（OM）、扫描电镜（SEM）、能谱仪（EDS）、显微硬度计对锆合金702焊缝的显微组织与力学性能进行观察和分析;对锆合金焊缝......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
The Study of the Varying Characteristics of Cathodic Regions for Defective Coating in 3.5％ Sodium Ch
The current distributions over carbon steel under iron red alkyd primer exposed to 3.5% sodium chloride solution were ma......
Tests were carried out to study the strength deterioration of concrete cooled in air or by water after sub-high temperat......
Concrete deterioration under the coupling effects of flexural load, cyclic wetting and drying, and s
Our research focused on the analysis of concrete deterioration mechanism under the coupling effects of flexural load, cy......
种子萌发是植物生命的开端,此过程需要多种贮藏物质的动员来提供营养及能量,贮藏物质对种子萌发至关重要。本文概述了种子萌发所需......
西西里战争被史学界认为是伯罗奔尼撒战争的重要转折，战争中雅典军事、经济实力受到了沉重打击，而随着战争的继续进行，雅典内部矛盾不......
为提高淮北市东岗楼立交桥运营的安全性,彻底解决立交桥既有病害,对桥墩主要病害进行检测,采用有限元方法计算全桥结构在升温效应......
大涝坝集气处理站是一座集凝析油稳定和轻烃回收于一体的处理站,该站供热方式为导热油供热。该系统在前期运行中,出现导热油污染变......
由于桥梁的劣化过程是一个随即变化过程,本文基于Rijkswaterstaat模型中伽玛过程推导出了构件组在串——并联关系下的维修成本模型......
针对退化设备可靠性预测的问题，采用加入次优渐消因子的卡尔曼滤波器预测设备未来时刻退化量均值，进而预测未来时刻的可靠性。本文给......
介绍了汽轮机油油质的现状、油的性能及油质合格标准,并针对油质劣化原因分析提出了防止劣化的途径及参考意见.......
从保持库存的稳定性出发,分析了商品变质率、缺货成本和库存率等因素对库存成本的影响,在受服务水平约束的条件下,建立库存控制模......
研究了热等静压烧结对Nd-Fe-B磁体的致密度、显微组织及磁性能的影响.结果表明:与常压烧结磁体相比,热等静压烧结磁体的内部存在较......
分析了某批绿茶饮料出现颜色变浅，出现少量片状沉淀的变质原因。首先采用平板计数琼脂、橙血清和乳酸菌培养基分离和计数污染菌，该菌......
分析了乙烯原料劣质化对装置运行适应性带来的几个操作问题，主要有：乙烯综合能耗、双烯收率等技术经济指标下滑，裂解炉炉管焊缝腐蚀穿......
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通过对设备综合精度指数的介绍，了解如何应用综合精度指数评定设备的技术状态。...
供应链中的协作管理对于提高供应链整体绩效具有重要的作用,特别是对于具有变质特性的易腐物品,实施供应-生产-分销的三级协作将极......
基于MMSE（最小均方差）估计与GLR（广义极似然比）理论提出对结构损伤不敏感而对传感器性能退化较为敏感的控制指标,并绘制质量控制图,判......
某气田自2011年开始使用上海某公司生产的井口液压安全截断系统,使用过程中发生了一系列故障,基层单位员工通过井安系统结构、原理......
为研究水泥土的劣化过程,揭示水泥土渗透性随劣化程度的演化规律,通过模拟水泥土在腐蚀场地的形成过程分别制备完全劣化、劣化过渡......
对高频电主轴的发热和损耗状况进行了分析，针对影响电主轴．寿命的主要原因，提出了提高电主轴转子加工精度的措施和选择合理的电磁方案......
重庆市主城区某桥桥面铺装出现破损露筋、纵横向开裂和唧浆等病害，主要由超载、桥面铺装层厚度不足、原材料质量控制不严、除冰盐的......
