The northwestern Himalaya harbors high levels of biodiversity due to its unique topography, climatic conditions and hete......

The reaction of dichlorodiphenoxymethane (2) with ortho-functionlized benzoic acids 1a-c yielded the spiro derivatives o......

It is well-known that primary amines form inclusive complexes with crown ethers. This kind of noncova-lently inclusive c......

Equation based TCP-friendly rate control (TFRC) protocol has been proposed to support video streaming applications. In o......

Developing a competitive strategy is developing a broad formula for how a business is going to　　compete, what its goal......

本文运用Fragstats 4.2软件以研究区内防护绿地、公园绿地、农林用地的空间数据为基础,选择斑块数、平均斑块面积、斑块密度、景观......

对卵巢恶性肿瘤30例、良性瘤10例及正常妇女30例的外周血染色体脆性部位(fra)、畸变(CA)及姊妹染色单体互换(SCE)作了检测。结果：恶......

本系统的研究开发,经现场运行与试验验证,模拟计算与试验实测的块度—产率曲线拟合率和实际爆破效果均达到和超过了预定的质量指标......

采用固相微萃取和气相色谱－质谱联用技术分析了白兰花的香气成分，共分离了114个色谱峰，鉴定了其中的75个成分，占其香气成分的97.26%.......

研究单个破片冲击下圆柱薄壳装药的毁伤效应。采用12．7mm弹道枪、通靶测速仪和高速摄影机组成实验系统，进行1．0-1．7km／s速度范围内球形......

用共混法生产芳香纤维,简要介绍了芳香母粒的制备,芳香母粒的加入对纺丝及纤维性能的影响.试验说明,随着芳香母粒含量的增加,出现......

为研究某奥克托今(HMX)基塑料粘结炸药(PBX)炸药对不同材料金属壳体的驱动加速能力,参照25 mm标准圆筒试验,研究了该炸药对无氧铜(......

为提高导弹对抗生存能力和拦截弹药摧毁来袭导弹的毁伤概率，以巡航导弹燃油舱为研究对象进行了巡航导弹的易损性和毁伤效应研究。利......

教育信息化改革,在现代通信技术和信息技术的支持下,已经由宏观阶段,进入到微观阶段,以翻转课堂为代表的新教学模式,微课程为代表......

在研究Gardner提出的最大似然检测器（MLFD）及其相关简化方法的基础上，提出了一种基于最大似然原理的低复杂度的频率检测器．采用非等间......

论述了城市地貌环境的脆弱性，分析了其脆弱带的特点，认为环境的变异敏感度高、持续利用性降低和对灾变的承受弹性减小是城市地貌环境......

A simplified fragility analysis of fan type cable stayed bridges using Probabilistic Risk Analysis (PRA)procedure is pre......

Landscape ecological pattern mode emphasized the control and influence of landscape space pattern on the process, and th......

The effect of fragmented host distributions on the transmission dynamics of directly-transmitted pathogens was explored ......

The cerclage wire is an important adjuvant in the management of Orthopaedic and trauma cases and is particularly useful ......

以3-氧代戊酸甲酯为反应物，在气相色谱上在线制备了一些β-二酮酯类化合物，用HP-5色谱柱分离了烯醇式和酮式互变体，并讨论了3-氧代戊......