针对输电线缆耦合强电磁脉冲感应过电压的问题,利用有界波模拟器产生2.3/23 ns的电场波形,对LGJ和ZR-VVR两种架空输电线缆进行耦合实验,用直接实验法分析其不同条件下耦合到的感应过电压特征和差别。试验结果表明:电场强度在10 kV/m以下时,这两种输电线缆耦合到的电压随着电场强度的增加而增大并近似为线性增加;电压波形近似为阻尼振荡,振荡周期为纳秒级;输电线缆耦合到的电压会随着架空高度、入射仰角、横截面积、耦合长度的增大而增大。在输电线缆近端负载接50 Ω阻抗匹配时,耦合到的电压和能量最大 ...
李祥超, 王贤超
doaj
[Valve-in-valve transcatheter mitral valve replacement with SAPIEN 3 valve for bioprosthetic mitral valve failure: one-year outcomes in 26 patients]. [PDF]
Ran Z +7 more
europepmc +1 more source
[Clinical effects of antibiotic bone cement combined with free anterolateral thigh flap in sequential treatment of diabetic foot ulcer]. [PDF]
Chen W +7 more
europepmc +1 more source
[The Innovative Education of Cross-Disciplinary Integration of Narrative Medicine With Medical Animation: Exploring the Potential of Health Humanities]. [PDF]
Zhang R, Xu L, Li J, Wang L.
europepmc +1 more source
[Extracellular matrix materials and tissue regeneration and repair]. [PDF]
Zhao L, Xie H.
europepmc +1 more source
Construction and verification of a quantitative index system to evaluate the medical and nursing care for the elderly service needs. [PDF]
Li F +7 more
europepmc +1 more source
黏液栓与小气道功能障碍、气道壁厚度在慢性阻塞性肺疾病中的关系
目的评估在慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者中,黏液栓与小气道功能障碍(small airway dysfunction,SAD)、胸部CT定量参数的关系。方法回顾性分析了2022年1月至2024年12月在中山大学附属第五医院住院治疗的COPD患者,纳入患者共93例,以黏液栓评分中位数3.5分为标准,将研究对象分成黏液栓低分组(n=46)和高分组(n=47)。收集了患者临床特征、实验室参数、定量CT指标及肺功能参数 ...
王孔丘 +7 more
doaj
Advances in laser therapies for the scar. [PDF]
Guo G +7 more
europepmc +1 more source

