Results 61 to 70 of about 708 (82)

[Effect of different plasma treated zirconia on the adhensive behaviour of human gingival fibroblasts]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban, 2019
Zheng M, Zhan LL, Liu ZQ, Li HP, Tan JG.
europepmc   +1 more source

降雨环境下35 kV绝缘子串雷电冲击放电特性与影响规律研究

open access: yesDianci bileiqi
在极端强降雨条件下,输电线路、变电站及换流站中的绝缘子伞裙间距因密集的雨柱而被连接,这一现象会显著改变原有电场分布,造成电场畸变。瓷质绝缘子作为电力系统常见绝缘元件,在长期服役过程中,不仅需承受自身重量,还不断受到风力等外部载荷的作用,这些因素作用下,逐渐导致陶瓷内部绝缘性能的退化,进而形成零值绝缘子。为研究强降雨条件35 kV绝缘子串雷电冲击放电特性,针对输电线路复合绝缘子及U70BP/146D瓷绝缘子串不同零值情况开展雷电冲击放电特性测试。结果表明 ...
许军   +6 more
doaj  

[Recent advances in direct pulp capping materials]. [PDF]

open access: yesHua Xi Kou Qiang Yi Xue Za Zhi, 2018
Fan ML, He LB, Li JY.
europepmc   +1 more source

[Research progress on bisphosphonate-related osteonecrosis of the jaws]. [PDF]

open access: yesHua Xi Kou Qiang Yi Xue Za Zhi, 2017
Jian P, Qizhang W, Jiyuan L.
europepmc   +1 more source

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