Hand-sewn expanded polytetrafluoroethylene valved conduit for right ventricular outflow tract reconstruction. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2022 Qian T +6 more
europepmc +1 more source
Gaoya dianqi, 2017 换流站交流滤波器断路器因切断频繁等因素发生了多起爆炸事故,威胁了电网运行安全。分析表明交流滤波器断路器合闸涌流对弧触头烧蚀产生的金属微粒,可能会引起灭弧室电场畸变进而降低设备绝缘强度,为此文中开展了金属微粒对交流滤波器断路器灭弧室电场分布的仿真研究。首先基于电磁场数值分析理论,采用Solidworks和Ansys软件建立了550 kV ACF断路器和不同形状金属微粒的三维数值仿真模型,并仿真分析了无金属微粒情况下ACF断路器开断过程中的电场分布;然后,研究了金属微粒形状和半径对灭弧室电场分布的影响 ...
王程嘉 +6 more
doaj
Gaoya dianqi, 1973 美国AIIis—Cha/mers公司的ABM型空气断路器,有串联的灭弧断口和隔离断口。此隔离断口的作用是形成最终绝缘间隙和分担部份灭弧负担。采用隔离断口的优点是: 1.不要求灭弧装置即能形成最终的绝缘间隙,又能合闸短路电流。按开断达65千安电流而设计的灭弧装置便具有较好的开断能力。 2.当灭孤单元和隔离单元分开时,比二者在同一结构中易于做成各种容量和电压的断路器。 3.能够很适时地开断与灭弧装置相并联的并联电阻。
王璞
doaj
[Therapeutic effects of sacral neuromodulation on detrusor underactivity]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2021 Wang Q +7 more
europepmc +1 more source
[Curative effect analysis of 41 cases of local skin flap transfer in repairing tissue defect after resection of nasal and facial masses]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiYi R, Hu J, Zhu Z, Zha D, Chen X.
europepmc +1 more source
[Application of three-dimensional printed porous titanium alloy cage and poly-ether-ether-ketone cage in posterior lumbar interbody fusion]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2022 Wang Y, Zhou Y, Chai X, Zhuo H.
europepmc +1 more source
[Research progress in repair and reconstruction of tumor-related bone defects in proximal femur]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiTan L +9 more
europepmc +1 more source
[Several issues that need attention to improve the diagnosis and treatment level of infectious wounds]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiLiu Y.
europepmc +1 more source
A case of echinococcosis in Hunan Province. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2022 Li J, Deng S, Jiang L.
europepmc +1 more source