[Research progress on the acquisition technology of magnetocardiography]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiKang B +5 more
europepmc +1 more source
Gaoya dianqi采煤机拖拽电缆在实际运行中常受到电、热、机械应力的共同作用，致使其绝缘性能变差。为了能掌握力热应力同时作用下采煤机拖拽电缆用乙丙橡胶绝缘的性能，文中测量了挤压力与温度作用下乙丙橡胶的介电频谱，并研究了其复介电常数和复电导率实部受温度和挤压力的影响规律。随后用Havriliak-Negami函数拟合了复介电常数虚部频谱，并提取了函数模型的特征参数，分析了特征参数与温度和挤压力的关系。结果表明：乙丙橡胶绝缘的复介电常数和复电导率实部不仅与温度和频率密切相关，复介电常数还与挤压力相关 ...
刘兆贵 +6 more
doaj
[Effect of composite graphene-protein hydrogels on neural regeneration after spinal cord injury in rats]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhang Z, Fan Z, Wang X, Zhu Z.
europepmc +1 more source
[Diagnostic accuracy of tandem mass spectrometry combined with artificial intelligence for neonatal methylmalonic acidemia and associated factors]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiYan PY, Yu Y, Jiang S, Li HW, Wu HL.
europepmc +1 more source
Gaoya dianqi谐波将引起高压并联电容器损耗增大，导致设备发热严重，影响高压并联电容器安全稳定运行。现有研究对电容器热稳定温度随谐波组合的影响规律研究较少，且不能准确获得内部温度。通过对变电站内电容器运行数据进行测量分析，获得电容器的实际运行工况中奇次谐波含量高。基于此，为并联电容器施加多种奇次谐波，以模拟实际运行工况，采用恒电流法对高压并联电容器开展热稳定试验，在被试电容器外部和内部分别安装温度传感器，测量不同工况下电容器的外壳温度和心子温度。试验结果显示，在单频次电流激励下，热稳定温度随频率先降低后增加 ...
孙启明, 祝令瑜, 盖斌
doaj +2 more sources
Dianci bileiqi架空配电线路分布广泛且线路绝缘水平低，易发生直击雷和感应雷闪络故障，为了考虑配电线路受直击雷和感应雷过电压的综合影响，建立了配电线路耐雷性能计算模型。首先基于ATP-EMTP建立线路直击雷和感应雷过电压模型对线路耐雷水平进行仿真计算，然后通过电气几何模型并结合线路感应雷耐雷水平关于雷击点至线路距离的拟合关系式，对线路直击雷和感应雷闪络区域进行划分，进而计算得到线路直击雷和感应雷跳闸率，最后，计算分析了杆塔高度和大地电导率对配电线路耐雷水平以及雷击跳闸率的影响规律。计算结果表明 ...
杨明浩 +5 more
doaj
[Study on electrospun film-covered tracheal stents with adaptive release of anti-inflammatory drugs driven by the piezoelectric effect]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWang Z +6 more
europepmc +1 more source
[Exogenous nitric oxide suppresses K <sub>ATP</sub> channel activity through S-nitrosylation]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWang X, Zhang Y, Hu W, Hao X.
europepmc +1 more source
[Assessment on data processing methods for nontarget identification of per- and polyfluoroalkyl substances using liquid chromatography-high-resolution mass spectrometry]. [PDF]
Se PuZhang BX +5 more
europepmc +1 more source