Results 121 to 130 of about 9,868 (174)

Impacts of electric vehicle charging on distribution networks in Denmark [PDF]

open access: yes, 2011
Marra, Francesco   +4 more
core  

[Simulation analysis of adaptability of large airborne negative pressure isolation cabin to aviation conditions]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Guo L   +7 more
europepmc   +1 more source

基于风速—风向联合分布的UHVDC线路合成场及评估技术研究

open access: yesGaoya dianqi
特高压直流输电线路形成的离子流在风力作用下迁移,由于风具有地域性与随机性,造成离子流密度ρj与合成场强E的量化评估困难。目前计及风力的E值统计评估未考虑到风速与风向随机性的关联,且缺少对多风向下离子流迁移的模拟。为此,文中以湖州±800 kV线路为例,将传统二维线路合成场有限元模型拓展到三维,得到—影响下ρj与E的变化规律,并以Copula函数构建概率模型,提出一种安全评估技术。结果表明:风速决定了空间电荷扩散程度,风向决定其扩散轨迹;风速增大使ρj与E先增大后减小;风向与线路走向夹角减小使风力影响减弱;
秦子翌   +4 more
doaj  

[Current status and Joinpoint regression analysis of the burden of musculoskeletal diseases in China from 1990 to 2023]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Hu Y   +6 more
europepmc   +1 more source

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