Results 51 to 60 of about 393 (101)

[Determination of 17 bisphenol compounds in human urine by solid supported liquid-liquid extraction-ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Jin Y, Zhang LG, Zhou JX, Ma JJ, Yuan LL, Xiao P, Wang GQ.   +6 more
europepmc   +1 more source

[Application and research progress of three-dimentional printed porous titanium alloy after tumor resection]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2022
Liu P, Gao Q, Lü L, Zhang W, Fan B.
europepmc   +1 more source

裂纹形状和激振位置对瓷支柱绝缘子振动检测的影响研究

Gaoya dianqi
根据变电站瓷支柱绝缘子带电检测缺陷的实际需求，以220 kV瓷支柱绝缘子为研究对象，深入研究了裂纹长度、裂纹形状和激振位置对瓷支柱绝缘子振动检测的影响。首先阐述了瓷支柱绝缘子内部缺陷振动检测的基本原理，然后建立瓷支柱绝缘子有限元数值分析模型，利用脉冲信号模拟锤击进行瞬态分析，并搭建实验平台进行测试分析。仿真和实验结果表明：裂纹长度越大，在功率谱图上表现为正常频率区间内的峰值降低，故障区间内的峰值所对应固有频率左移，激振点远离裂纹侧时波峰的加速度响应谱值出现小幅度的减小 ...
董国振, 李国维, 王勇, 敬尚前, 宗方蕊, 万书亭   +5 more
doaj  

[A Case of Refractory Pulmonary Enteric Adenocarcinoma with EGFR Sensitive Mutation]. [PDF]

Zhongguo Fei Ai Za Zhi
Wang X, Mu N, Li F, Liu M, Xu Y, Wu S, Lv H, Ma C.   +7 more
europepmc   +1 more source

[Repair and reconstruction of facial organ injuries: a perfect fit of structure and function]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Song BQ, Pei JM.
europepmc   +1 more source

[Determination of polychlorinated naphthalenes in ambient air by isotope dilution gas chromatography-triple quadrupole mass spectrometry]. [PDF]

Se Pu, 2022
Liu H, Jin J, Guo C, Chen J, Hu C.
europepmc   +1 more source

[Neuroendocrine carcinoma with significantly vacuolar nucleus at the esophagogastric junction: A case report]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Hou W, Song S, Shi Z, Liu L, Jin M.
europepmc   +1 more source

[Efficacy analysis of autologous facet joint bone block in lumbar interbody fusion of osteoporosis patients]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban, 2023
Wang DW, Wang HD, Li L, Yin X, Huang W, Guo JD, Yang YF, Liu YH, Zheng Y.   +8 more
europepmc   +1 more source

自然污秽直流线路支柱绝缘子的实验室试验

Dianci bileiqi, 1989
曾在美国西勒弥直流换流站自然污秽条件下运行的支柱绝缘子在日本高压试验室作了试验.在雾室中试验了2只400kV支柱绝缘子（高4600mm,由4节高1150mm、平均直径225mm的绝缘子组成,总爬电距离12800mm）和1只500kV支柱绝缘子（高4600mm,由2节高2300mm绝缘子组成,平均直径313mm,总爬电距离1600mm）.太平洋直流输电1970年以±400kV投入运行,1985年电压升高到±500kV.运行期间发现了直流绝缘的污秽闪络.在电源±750kV输出电容1 ...
doaj  

[Proteomics analysis of the effect and mechanism of ADSCs on full-thickness skin defects in diabetic rats]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Gu Y, Chen YZ, Wang SY, Song HY, Bai N.
europepmc   +1 more source