Results 81 to 90 of about 164 (130)

输电线缆耦合强电磁脉冲特性的分析

open access: yesDianci bileiqi
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  

[Clinical effects of antibiotic bone cement combined with free anterolateral thigh flap in sequential treatment of diabetic foot ulcer]. [PDF]

open access: yesZhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2023
Chen W   +7 more
europepmc   +1 more source

侧面抽运(Tm, Ho)∶YLF晶体传导冷却百纳秒脉冲激光器

open access: yes, 2021
刘继桥 Liu Jiqiao   +6 more
core   +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

Construction and verification of a quantitative index system to evaluate the medical and nursing care for the elderly service needs. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban, 2023
Li F   +7 more
europepmc   +1 more source

纳秒脉冲激光诱导可控氧化TiAl金属间化合物的研究

open access: yes, 2021
何宁 He Ning   +4 more
core   +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

open access: yesZhongguo shiyan zhenduanxue
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]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban
Guo G   +7 more
europepmc   +1 more source

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