Dianci bileiqi随着城市植被的不断增加，鸟类活动在城市日益增多，这对架空输电线路的安全运行提出了更高的要求。针对鸟类杆塔筑巢引发线路电晕放电问题，现有研究主要基于单一电场强度指标进行评估，难以准确反映复杂电场环境下的放电风险特性。本研究通过引入电场畸变率作为辅助评估指标，构建了综合考虑电场强度和畸变率的电晕放电风险评估模型。研究首先建立鸟窝-导线电场耦合的三维数值模型，分析电场畸变的空间分布特性；然后提出电场畸变率定量表征方法，揭示电场能量重分配机制；最后构建综合风险评估模型并验证其有效性。基于三维数值仿真技术 ...
叶子阳 +5 more
doaj
[Current applications and future perspectives of automation technologies and devices in oral diagnosis and treatment]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiZhang X, Cao H, Zhou Y.
europepmc +1 more source
Gaoya dianqi电容器组投切断路器触头烧蚀劣化后会改变合闸预击穿时间，这不仅会影响选相合闸效果，同时也说明预击穿电弧持续时间可作为衡量触头烧蚀状态的指标之一。建立了126 kV SF6断路器灭弧室内合闸预击穿过程电—流体耦合仿真模型，研究了触头劣化过程中合闸预击穿特性，并提出了预击穿时间带电检测方法。结果表明：合闸过程中场强最大点总是出现在静弧触头表面；灭弧室内SF6气体密度几乎保持不变；110 kV电压等级相电压下，触头预击穿电弧持续时间随烧蚀程度变化的试验值与仿真值吻合良好 ...
马飞越 +6 more
doaj
[Motion parameter decoupling and motion constraint-driven optimization for correcting rigid motion artifacts in cone-beam computed tomography]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoJiang H, Wang Y, Bian Z.
europepmc +1 more source
Dianci bileiqi针对特高压交流复合绝缘子均压环典型故障，采用COMSOL Multiphysics有限元分析软件建立FXBW-1000/300线路复合绝缘子的静电场-热场耦合计算模型，分析了不同均压环偏转角度和罩入深度的场强和温升规律，并在特高压交流试验室大型环境气候实验室开展了复合绝缘子带电温升特性验证试验。结果表明：当均压环偏转角增至20°时，高压端最大场强与温度峰值较正常工况提升36.1%和6.6%；当均压环罩入深度降低300mm时，最大场强和温度峰值较正常工况提升70%和9.3%；在均压环缺失的条件下 ...
高嵩 +4 more
doaj
[Application of hybrid attention guided dual-path residual learning in magnetic resonance imaging diagnosis]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZhu W, Cai X, Liu Y.
europepmc +1 more source
[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
[Optimized decomposition of dynamic electroencephalography-functional near infrared spectroscopy brain functional networks for the analysis of repetitive transcranial magnetic stimulation combined with motor training]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLu J +6 more
europepmc +1 more source
[Analysis of the constraints of inherent limitations on the capability boundaries of brain-computer interfaces and corresponding strategies]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiFu Y +6 more
europepmc +1 more source
[Electroencephalogram emotion recognition based on state-space models combined with spatio-temporal feature]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWang C, Zhang J, Dou J, Wang C, Chang W.
europepmc +1 more source