Results 101 to 110 of about 6,382 (146)

特变电工信息简报(电线电缆专辑)2019年第1期 [PDF]

open access: yes, 2019
付爽   +6 more
core  

高烈度地震区特高压直流输电塔线体系地震反应分析

open access: yes
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  

[Correlation study of superb microvascular imaging on knee osteoarthritis]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Wang C, Chen Z, Cheng Y.
europepmc   +1 more source

[Extracellular matrix materials and tissue regeneration and repair]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhao L, Xie H.
europepmc   +1 more source

[Expert consensus on the diagnosis, treatment, and prevention of neonatal dengue, chikungunya, and Zika virus infections (2025)]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Perinatal Group   +2 more
europepmc   +1 more source

特高压直流控制保护系统相位光时域反射仪信噪比提升方法

open access: yes, 2022
吕涛 Lü Tao   +7 more
core   +1 more source

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