Results 101 to 110 of about 20,259 (162)

基于护套电流的高压电缆金属护套接地系统故障诊断判据综述

open access: yesGaoya dianqi
高压电缆金属护套接地系统对电缆安全运行至关重要,同时故障占比较高。金属护套接地电流的监测结果能够反映电缆金属护套接地系统健康状态,是评价高压电缆线路运行状态的重要依据。解释了金属护套环流的形成机理,介绍了金属护套接地系统的常见缺陷,对国内外应用金属护套电流诊断金属护套接地系统缺陷的判据进行了全面梳理,并通过现场案例比较了现行判据的效果,为进一步提出更准确和全面的诊断判据提供参考。
赵洋   +5 more
doaj  

[Advances in oral and craniofacial bone regeneration modulated by stem cells and biomaterials]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Li Z   +6 more
europepmc   +1 more source

[Application and challenges of tissue engineered scaffolds in treatment of long-segment laryngotracheal stenosis]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Yu Q   +7 more
europepmc   +1 more source

[Impact of ultrasonic scaling on abutment screw torque in implant restorations]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Tang Y, Zhao X, Yang X, Jia H, Liu Y.
europepmc   +1 more source

[Dynamic changes in gut microbiota from 1 to 12 months of age in preterm infants]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Song QY, Zhao XL, Ding BL, Lyu Q, Ma LY.
europepmc   +1 more source

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