[Applications and perspectives of artificial intelligence in periodontology]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiLü C, Ge S.
europepmc +1 more source
[Management of accidental tooth root displacement into the mandibular canal during tooth extraction]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiSu L, Zhao J.
europepmc +1 more source
[Effectiveness analysis of tibial nerve transection with epineurial suture and division of common plantar digital nerve branches in treatment of congenital macrodactyly in children]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiLi D +6 more
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基于高速并联开关的多端混合直流工程第三站在线投退关键特性分析
Gaoya dianqi特高压多端混合直流工程运行中需进行第三站在线投退。在当前技术条件下，依靠直流高速并联开关（HSS）与柔直换流阀相互配合实现第三站在线投退。因HSS直流电流分断能力、断口耐压能力相对较弱，有必要对基于直流高速并联开关的多端混合直流工程第三站在线投退关键特性分析。文中基于±800 kV昆柳龙柔性直流输电工程，分析了HSS在各种工况下的直流电流开断能力、断口燃弧耐受能力等关键电气性能。以柳州站为例分析了包括第三站投入、退出及永久故障极隔离等在线投退策略，并提出了HSS与控保系统之间的逻辑配合要求 ...
刘金 +5 more
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[Artificial intelligence in stomatology: Innovations in clinical practice, research, education, and healthcare management]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanDeng X, Xu M, DU C.
europepmc +1 more source
Gaoya dianqi, 1959 Voigt & Haeffner公司和ASEA公司创制了一种新型空气断路器,它是多断点的,其额定断流容量为8000兆伏安,与之相应的切断电流为21千安。每个断点的切断能力为1000兆伏安,所以断路器的每相由8个断口组成。主要电气特性数据见表1 三相断路器是由三个相同的单极及一个带有压缩空气检验仪表的控制柜所组成 ...
doaj
[Application of salivary micro-ecosystem in early prevention and control of oral and systemic diseases]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanSun X, Yuan C, Zhou X, Diao J, Zheng S.
europepmc +1 more source
[Case of tooth autotransplantation with robotic surgery assistance]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiLiu Y +6 more
europepmc +1 more source
[Clinical decision-making for immediate restoration of terminal dentition: determination and transfer of jaw relations]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiGu Y, Yang S, Yuan Q.
europepmc +1 more source
Gaoya dianqi断路器的合闸电阻能够有效抑制合闸涌流以及操作过电压，对电网的稳定运行起着重要作用，合闸电阻一旦出现故障，无法正确投入或退出，将会造成巨大的设备和安全事故。由于1 100 kV GIS断路器为多断口结构，断口间的配合时序偏差以及各触头弹跳因素的干扰，经常导致合闸电阻特性无法测量，或者测试结果误差较大。针对一起1 100 kV GIS断路器合闸电阻预投入时间及阻值无法检测事件展开研究，分析其结构与测试原理，通过提高测试频率获取完整测试波形 ...
褚周健 +6 more
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