Results 61 to 70 of about 676 (100)

[Association of increased greater tubercle angle and critical shoulder angle with rotator cuff tears]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Jiang H   +7 more
europepmc   +1 more source

真型变压器中典型悬浮缺陷的局部放电特征

open access: yesGaoya dianqi
局部放电缺陷在运行过程中会逐渐劣化甚至引发高能放电故障,严重威胁变压器的安全运行。文中基于一台110 kV真型变压器搭建局部放电试验平台,设计了高压引线悬浮金属颗粒、高压引线附近金属尖刺悬浮、静电环悬浮3种悬浮放电缺陷,采用阶梯升压法进行试验,记录局部放电发展过程中脉冲电流、特高频和声信号的变化规律并进行对比分析。发现3种悬浮放电缺陷的“剧烈”放电阶段均不明显,击穿前的放电能量均比较低,声信号频谱没有出现“主频左移”的现象。3种缺陷虽然都是悬浮电位放电,但是其局部放电特征明显不同 ...
朱涛   +6 more
doaj  

[Application value of hinge position design of Ilizarov circular external fixator for correcting clubfoot deformity in preventing ankle dislocation]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhang D   +8 more
europepmc   +1 more source

[Therapeutic potential of extracellular vesicles in neurological diseases]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
DU Q, Yang C, Xia X, Wang T.
europepmc   +1 more source

[Guardians of Immune Tolerance: Regulatory T Cells]. [PDF]

open access: yesSichuan Da Xue Xue Bao Yi Xue Ban
Ming K, Zhang H, Hu H.
europepmc   +1 more source

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