Results 101 to 110 of about 3,070 (153)

一台新投运500kV变压器油色谱异常的缺陷诊断和处理

Gaoya dianqi, 2015
变压器油色谱分析是发现变压器内部早期潜伏性故障的重要手段,笔者针对某500 kV变压器在投运初期发生的油色谱异常情况,结合变压器局部放电带电检测和故障定位,综合分析判断了缺陷性质和部位,为随后变压器的内部检查和消缺处理提供了有力的指导意见。内部检查结果与色谱分析、局放定位结果相吻合,充分验证了故障诊断方法的有效性和正确性,为大型变压器油色谱异常后的故障诊断和缺陷处理提供了经验。
胡然, 罗维, 王瑞珍, 周凯
doaj  

雷电定位系统在输电线路雷击故障分析中的应用

Dianci bileiqi, 2012
雷击故障是输电线路的主要故障,识别雷击故障原因能有效提高和改进输电线路的雷击可靠性水平。结合220kV输电线路雷击故障的现场调查数据,采用雷电定位系统得到的雷电流参数在电磁暂态仿真软件ATP-EMTP建立输电线路雷击过电压仿真模型,分析了输电线路在不同雷电流下的跳闸性质。仿真结果表明,基于雷电定位系统和电磁暂态仿真能有效判别线路故障的性质,为线路的运行、维护和改造提供参考。
何健, 张弓达, 徐陈华, 张晓琴
doaj  

[Resveratrol protects barrier function of mouse brain microvascular endothelial cell monolayers with oxygen/glucose deprivation and PM_2.5 exposure by maintaining mitochondrial dynamics balance]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Qin M, Sun S, Liu J, Gao Y, Wang H, Wang Y, Sun A, Yan J, Wang J, Yu Y.   +9 more
europepmc   +1 more source

[Clinical and therapeutic analysis of 22 patients with traumatic spinopelvic dissociation]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wu M, Guan J, Chen X, Wang X, Zhao P, Wang Y, Chen J, Liu L, Li R.   +8 more
europepmc   +1 more source

[Construction of the evaluation index system for nursing quality management in outpatient dental clinics based on the structure-process-outcome model]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Wei J, Liu F, Yang C, Wang J, Ma Y, Yang J, Xie J, Xu L.   +7 more
europepmc   +1 more source

[Preoperative serum magnesium as a biomarker for predicting delirium following non-cardiac surgery in elderly patients: a retrospective cohort study]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Yuan M, Ruan X, Li Y, Zhang T, Hao C, Li H, Lou J, Cao J, Liu Y, Mi W, Zhang X.   +10 more
europepmc   +1 more source

[State-of-the-art in peripheral nerve injury diagnosis and therapy]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Sun J, Chen L.
europepmc   +1 more source

[Positive cortical support reduction in treatment of trochanteric femur fractures: history in theory establishment and its inspiration for clinical innovations]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Chang S.
europepmc   +1 more source

[External fixation combined with microsurgical techniques for repairing complex foot and ankle wounds in children]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wang G, Xu Q, Pei Y, Ma Z, Shi A, Zhu L.
europepmc   +1 more source

[Application and research progress of mandibular distraction osteogenesis in craniofacial microsomia]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li L, Zhang Z.
europepmc   +1 more source