Results 51 to 60 of about 935 (100)

城市轨道交通杂散电流对500 kV变压器直流偏磁影响测试分析

Gaoya dianqi
城市轨道交通运行会引起变压器直流偏磁问题，严重威胁电网的安全稳定运行。为研究轨道交通运行对变压器直流偏磁的影响，文中对上海市轨道交通沿线的某500 kV变压器，采用多物理量同步测量方法测试了轨道交通正常运行、高峰运行和停运后的变压器中性点直流、振动和噪声特性，并与2010年地铁刚投运时振动噪声数据进行比较。分析测试结果发现变压器中性点直流、振动噪声特性与轨道交通负荷功率呈现正相关的变化规律。证明了轨道交通运行引起的杂散电流会导致变压器长期直流偏磁运行，为解决类似问题提供了参考性意见。
陈璐, 吴天逸, 苏磊, 黄华, 李晓华, 李俊聪   +5 more
doaj  

[Electric-field modeling, simulation, and experimental analysis of multi-target temporal interference transcranial alternating current stimulation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wang T, Cui C, Wei Y, Ji X, Xu G.
europepmc   +1 more source

[Clinical symptoms and cone beam computed tomography imaging analysis of patients with temporomandibular joint osteoarthritis with chewing side preference before and after treatment of stabilization splint]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Li X, Wang J, Xu L, Xu X, Li H, Hu M, Liu H, Jiang H.   +7 more
europepmc   +1 more source

[Progresses on temporal interference electromagnetic stimulation for non-invasive deep brain function modulation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zhou T, Yu P, Xu Y.
europepmc   +1 more source

[Spherical measurement-based analysis of gradient nonlinearity in magnetic resonance imaging]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Yang X, Wang Z, Wang Q, Zhang Y, Song Z, Zhang Y, Qi Y, Ma X.   +7 more
europepmc   +1 more source

[Magnetic one-step purification-high performance liquid chromatography-triple quadrupole/composite linear ion trap mass spectrometry for the determination of 54 veterinary drug residues in carp]. [PDF]

Se Pu
Wen YP, Huo WD, Zhang CY, Liu H, Mu YC, Wu LD, Li JC.   +6 more
europepmc   +1 more source

[Research progress on quantitative magnetic susceptibility imaging reconstruction method based on improved U-network model]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Yang W, Zhang R, Keung S.
europepmc   +1 more source

[Nanomaterial-driven Lateral Flow Immunoassay: Technological Development and Application]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Zheng J, Hu X, Gu B.
europepmc   +1 more source

磁饱和式可控电抗器的磁场与铁心损耗分析

Gaoya dianqi
磁饱和式可控电抗器（magnetically-saturated controllable reactor，MSCR）运行时，交、直流共同励磁，铁心各部分磁场分布显著不同，这对损耗的分析计算造成困难。文中以单相他励式磁饱和电抗器样机研究对象，建立场路耦合三维有限元分析模型，首先计算铁心内部磁场分布，分析得到典型区域的磁场分布和变化特点；在此基础上，对铁心损耗进行仿真计算，归纳得出MSCR铁心总损耗随负载变化而变化的规律。研究指出，磁阀直流偏磁分量随负载增大升高明显，磁阀交变磁场分量随负载升高而降低 ...
王晛, 田铭兴, 张慧英, 王田戈
doaj  

[How I treat vasovagal syncope in children]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zou RM, Wang C.
europepmc   +1 more source