Results 61 to 70 of about 5,239 (118)

海洋直流接地极对海底电缆的影响及其防护措施研究

Dianci bileiqi
高压直流接地极的作用包括将高压直流系统高达几千安培的运行电流散入大地进行回流，这一入地电流将会对地下金属设施造成直流干扰。笔者对海洋直流接地极对海底电缆的影响原理进行了分析，发现海洋直流接地极主要会对海底电缆的泄漏电流造成很大干扰，利用CDEGS仿真软件建立电缆和海岸海水土壤模型，对分段隔离法、排流法和异性导电媒质介入法等方法在海底电缆上的适用性进行仿真分析。得出结论：排流法不适用于海底电缆泄漏电流的防护；分段隔离法和异性导电媒质介入法可以明显降低海底电缆的泄漏电流。
江进波, 唐铭, 童雪芳, 金童, 沈俊峰, 蔡宛辰, 罗正   +6 more
doaj  

[Limb reconstruction over four decades: the seamless path from technical integration to disciplinary ecology]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhu Y.
europepmc   +1 more source

[An investigation study on the technology and training level of ski patrol]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Bai P, Huai W, Yang Z, Zhou F, Guo X, Chen Z, Guan H, Bai J.   +7 more
europepmc   +1 more source

[Refined surgical protocol and clinical efficacy of total expansion auricular reconstruction surgery]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Hao DY, Song BQ, Dong LW, Cang ZZ.
europepmc   +1 more source

[Maternal depressive symptoms and adolescent suicidal ideation: the chain mediating roles of childhood trauma and ineffectiveness]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zhong YY, Li YT, Chen JH, Chen RM, Cong EZ, Xu YF.   +5 more
europepmc   +1 more source

[Machine learning-based prediction model for caries in the first molars of 9-year-old children in Suzhou]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Chen L, Wang X, Zhu K, Ren K, Wu Z.
europepmc   +1 more source

特高压直流接地极近区新能源入网运行方式对直流偏磁电流分布的影响研究

Gaoya dianqi
湖北境内有多条直流外送通道，运行以来多次发生单极闭锁，直流偏磁的风险评估和防御治理问题突出。武汉特高压换流站的接地极位于随州广水岗上湾，接地极近区新能源站分布密集、数量众多，新能源接入电网方式对随州地区直流偏磁分布影响显著。本文开展随州地区新能源站多种接入电网方式下直流偏磁分析研究，获得了不同运行工况下新能源站和枢纽变电站直流偏磁电流分布规律，首次提出从优化电网调度运行方式的角度来治理直流偏磁问题。结果表明，金山风电场、吉阳光伏场对随州永阳和景星供区直流偏磁分布的影响比其他新能源站显著。根据分析 ...
肖冕, 吴传奇, 李红兵, 陈理, 李劲彬, 阮羚   +5 more
doaj  

[Advances in application of cell imprinting technology in biomedical field]. [PDF]

Se Pu
Zhao XM, Zhang ZY, Sun WJ, Qing GY.
europepmc   +1 more source

[Expert consensus on monoclonal antibody immunoprophylaxis against respiratory syncytial virus in infants and young children in tropical and subtropical regions of China]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Subspecialty Group of Neonatology, Society of Pediatrics, Chinese Medical Association, Guangdong Medical Association, Editorial Board of Chinese Journal of Contemporary Pediatrics.   +4 more
europepmc   +1 more source

[Reconstruction of superficial organs: a leap from structural restoration to functional rehabilitation]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Zan T, Gao YS.
europepmc   +1 more source