Results 81 to 90 of about 252 (116)
[Progress in preparation and application of sodium alginate microspheres]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023 Liu X +6 more
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基于SSA-SVR和NSGA-Ⅲ的含铁心真空灭弧室纵磁触头优化设计
Gaoya dianqi在高压真空断路器中，触头结构设计对磁场分布特性以及抑制电动斥力引发的对断路器运行的动态失稳具有关键作用。为此，本研究建立了杯状纵磁触头3D有限元模型，并通过融合支持向量回归(SVR)与麻雀搜索算法（SSA），以触头片开槽长度L1、宽度L2、径向旋转角度θ1、杯座厚度W、斜槽上下旋转角度θ2以及斜槽高度H六个关键结构参数作为输入，以电动斥力F、电流峰值时中心平面有效磁场占比S和过零时中心点磁滞时间t0分别为输出，构建了SSA-SVR高精度预测模型；最后通过NSGA-Ⅲ生成Pareto前沿 ...
丁璨, 贾振威, 袁召, 刘佳宇
doaj
Advances in neural circuits of innate fear defense behavior. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2023 Zhao J, Song Q, Wu Y, Yang L.
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[Deep learning method for magnetic resonance imaging fluid-attenuated inversion recovery image synthesis]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023 Zhou J, Guo H, Chen H.
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[Imaging Diagnosis of Ischemic Stroke Through Multiparametric Magnetic Resonance Angiography Enhanced by NaGdF<sub>4</sub> Nanoparticles]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanWu J +5 more
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Gaoya dianqi, 1985 真空电弧放电的状态是通过许多不同方面反映出来的具有许多特性,例如:从热的角度看,有电弧温度包括电子温空、离子温度、中性粒子温室。从电流上看,有电弧电流,电流密度分布,离子电流等等。所有这些构成了电弧的一系列参数。具体地反映了电弧的性质、电弧的形态。本文综述了纵向磁场对这些参数的影响和真空电弧理论的研究。
doaj
[Association Between Social Anxiety Symptoms and Brain Metabolism]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanZhao Z +7 more
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[Cascaded multi-level medical image registration method based on transformer]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2022 Pan Y, Cheng Y, Liu H, Shi C.
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[Magnetic resonance imaging research progress of hydropic ear disease]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiWang Z, Liu C, Gao W, Lu L.
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