Results 41 to 50 of about 6,264 (97)
, 2015 针对特高压电网建设对超长距传输提出的更高要求,提出了新的技术方向——塔内光中继。分析了塔内光中继的理论依据并设计了技术方案,在哈密郑州特高压直流输电光纤通信工程石城至环县段实现了我国首个塔内光中继实验工程,工程顺利开通,运行稳定,验证了塔内光中继方案的可行性。随着我国电网建设的不断发展 ...
殷天峰 +4 more
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安徽省池州段长江大跨越345 m超高杆塔是国家“西电东送”工程中白鹤滩-浙江±800 kV特高压直流输电线线路的重点工程。在超高杆塔施工中对摇臂抱杆高空吊装全过程受力分析是保证施工安全、保障西电东送工程顺利竣工的重要手段。开展了模拟施工过程的摇臂抱杆调幅加载试验，明确了分级加载下摇臂抱杆的全过程受力特征，建立了考虑动力特性的摇臂抱杆高空吊装有限元分析模型，明晰了在实际荷载工况下结构重要杆件与节点的应力分布规律，并基于诸多关键工况分析优化了高空摇臂抱杆的设计方案 ...
刘云飞 +5 more
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[Master manipulator of vascular intervention surgical robot based on haptic feedback]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiHan G, Sun Z, Tang X.
europepmc +1 more source
[<b>Role of counterclockwise rotation of the mandible in the orthodontic treatment of skeletal Class</b>Ⅱ<b>hyperdivergent patterns and concomitant temporomandibular disorders</b>]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiZhao Z.
europepmc +1 more source
[Research progress on the application of ultrasound technology in the diagnosis and treatment of lymphedema]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiTang ZY, Liu R, Deng CL.
europepmc +1 more source
[Structural design and mechanical analysis of a "drum-shaped" balloon-expandable valve stent in expanded configuration]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZhao Y +5 more
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[Medical treatment standards for emergency trauma wounded (2025 edition)]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiNational Health Commission Of The People's Republic Of China.
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为探究9 度设防烈度下某在建特高压直流输电线路的抗震设计方法的适用性，建立了某在建特高压直流输电线路在 9 度设防烈度下的空间有限元模型，研究分析了塔线系统的动力特性，比较了不同模型和计算方法的地震响应结果，并对地震作用下的杆件内力和杆件设计承载力进行对比研究。结果显示，导地线会显著降低输电塔频率，对输电塔具有一定减震作用，但若在地震响应计算时忽略导地线，则会使得横担杆件内力被低估。此外，地震工况下各杆件内力较小，地震效应在输电塔设计中并非主要控制因素，但在直线塔中的横担主材拉杆和塔身变坡处主材 ...
刘红军 +3 more
core
[Current status and prospects of family financial toxicity in childhood malignancies]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWu ST, Wang CL, Shi DR.
europepmc +1 more source