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This paper presents in-situ seismic performance tests of a bridge before its demolition due to accumulated scouring prob......
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The aim of the present study was to evaluate whether tissue levels of vitamin B complex and vitamin B12 were altered aft......
Tuned mass dampers(TMDs)are one of the most widely used devices to mitigate vibrations in structures.Usually,in conventi......
CNPC Pipeline Gas Investment Co.,Ltd.and Huzhou Municipal Government signed a letter of intent on cooperation in natura......
Optimization and competition promotion of industrial structure in Blue Shandong Peninsula Economic Z
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The fracture behavior of the thermomechanical fatigue (TMF) of the powder metallurgical nickel based superalloy FGH96 wa......
The year of 2014 is a pivotal year for the construction of the Beijing Radioactive Ionbeam Facility(BRIF)project.In this......
The development of Chinese sports undertakings has inherited the connotation of traditional Chinese culture,effectively ......
Two Comparable Earthquakes Produced Greatly Different Coseismic Landslides:The 2015 Gorkha,Nepal and
The 2015 Gorkha Earthquake in Nepal and the 2008 Wenchuan Earthquake in China occurred at the south and southeast margin......
In this study, a low complexity frame-rate up conversion method using compressed domain information for H.264 decoder is......
A linear mass-spring system model of a tractor-semitrailer together with driver body parts and sprung seat is presented.......
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Introduced the coal and rock AE propagation rule,wave guide fixing technics onAE sensors,and AE forecasting coal and ro......
爆炸荷载作用下礁砂地基钢塔架结构动力响应的研究,对我国的国防和岛礁工程建设具有重要的参考和现实意义。通过模型试验对不同礁......
为解决物联网应用的实时响应问题,提出一种基于FPGA加速处理传感数据中位数计算的方法,包括计算模型、符合FPGA设计限制的实现过程......
A triaxial high-g accelerometer of microelectro mechanical systems(MEMS)has a structure of multi-chips combination and w......
介绍三峡左岸电站1号机组在调试、试运行过程中,几种典型运行工况下厂房和引水钢管等关键部位的动力响应测试,并将测试结果与钢管......
Lead and lead-alloys are proposed in future advanced nuclear system as coolant and spallation target.To test the natural......
本文分别讨论了实现裂变和聚变核能的利用与物理学各学科（核物理、中子物理、等离子体物理、磁流体力学、材料物理、热物理、剂量防......
高动态环境下，由于发射信号的卫星与接收机之间存在着高速的径向相对运动，必然导致载波信号存在多普勒频移、多普勒一次变化率及多普......
电子设备具有长寿命、高可靠的特点,若采用传统方法对其进行寿命试验,则存在样本少、失效机理复杂、试验周期长、费用代价高的问题......
针对涡轴发动机起动过程复杂的特点，提出了“跟踪-微分器”的二阶动态结构来对其加速过程进行控制；首先，在对涡轴发动机起动过程分析......
射频超导腔的无载品质因数Q 0和加速梯度E a是评价腔性能的重要指标;为了得到铌溅射超导腔的性能参数,研制了一套射频超导腔性能测......
针对标准粒子群算法(PSO)存在收敛慢、易陷入局部极值的缺点，分析了粒子群算法中惯性权重和加速因子的作用，对它们作了修改，进行了相......
根据影响电磁继电器寿命的环境因素及恒定应力加速寿命试验原理，确定温度为加速应力（应力等级水平为4），同时介绍了电磁继电器加速寿命......
通过采用加速退化试验的研究方法，解决航天电磁继电器加速贮存中出现小子样零失效时的贮存可靠性评估问题，初步给出了航天电磁继电器......
An Experimental Investigation on Solid Acceleration Length in the Riser of a Long Circulating Fluidi
Systematic experimental work was conducted to investigate the solid acceleration length in a 16m long circulating fluidi......
通过东风自主品牌L60和东风雪铁龙C6车型上出现的2个电器故障的案例,介绍汽车电子电器故障的诊断方法和需要掌握的相关知识。......
针对NC系统传统的直线、指数加减速存在冲击、S曲线加减速过程计算复杂的特点，提出了基于函数逼近的三角函数加减速策略。采用逼近......
建立了混凝土泵泵送系统换向过程的数学模型，采用计算机仿真手段，以HBT80混凝土泵为实例，获得了泵送系统在不同条件下换向时液压缸活......
基于一种新型飞片激发装置的无起爆药雷管，通过实验研究了铝、钛、钢和铜4种飞片材料在不同加速膛直径和高度下对雷管爆轰性能的影......
目的 探究加速康复外科理念在骨科患者围手术期护理的应用效果。方法 方便选取从2017年1月-2018年1月在该院就诊的118例患者,按照......
针对传统基于加速退化建模的剩余寿命在线预测方法需在特定共轭分布条件下才能实现漂移系数和扩散系数同步更新的问题,提出一种基......
应用转动参考系，给出了一种求解球坐标系中速度和加速度的简捷方法。该方法不仅图像清晰，简明直观，而且可应用到矢量力学教学中去。......
宝山钢铁股份有限公司不锈钢分公司1780mm热连轧机投产二年多来，碳钢与不锈钢的功能考核已经完成，但由于参数优化的原因，各项精度指标......
为了从源头抑制轨道交通产生的振动噪声,采用力锤激励法实测了扣件-钢轨耦联系统的加速度阻抗,从加速度阻抗曲线上得到了钢轨的振......
采用普通硅酸盐水泥和矿渣硅酸盐水泥,分别配制了水灰比在0.45～0.60范围内的混凝土试件,采用加速腐蚀试验,研究了在海水腐蚀后,其强......
提出了随机模拟时滞生化反应的DRRA算法,该算法在模拟有时滞的随机生化反应系统时更为有效与实用.文中用了两个具体的生化反应系统......
为了研究老化对炸药性能的影响,对自然贮存的3种熔铸炸药TNT/RDX、TNT/RDX/Al和TNT/HMX/Al进行了加速老化试验。通过扫描电镜、真......
为了分析加速度传感器的数据误差对弹道积分解算的影响,基于刚体六自由度外弹道模型,对加速度传感器特征参数频率以及常见数据误差......
针对粒子群优化算法（Particle Swarm Optimization—PSO）存在算法初期容易陷入局部极值、进化后期收敛速度慢和精度低的缺点，提出了一......
为了提高传感器的性能,该文选取Fe基非晶带材作为敏感材料,采用纵向激励的驱动方式,优化设计了差分型的敏感元件。针对敏感元件的......
