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Dianci bileiqi针对纳秒级的强电磁脉冲对电力系统的损害问题，基于压敏电阻的特性和瞬变场传输理论，通过改变脉冲注入电压分析不同参数的压敏电阻在20/500-550 ns波形下的响应特征，结合滤波器理论，利用ADS（Advanced Design System）仿真软件进行设计，仿真结果为在频率50 Hz以内插入损耗小于0.3 dB的巴特沃斯低通滤波器，将滤波器串联在两片伏安特性相同的压敏电阻中间进行脉冲注入测试。实验结果表明：随着注入电压的增大，单片压敏电阻的过冲峰值电压逐渐增大，钳位电压基本不变，且与压敏电压呈正相关 ...
李祥超, 郭稳, 王兵
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[Effect of lower limb amputation on hemodynamic environment of the left coronary artery: a numerical study]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiTai T, Jiang W, Li Z, Diao J, Li X.
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[Effects of retropubic and obturator urethral suspension on postoperative maximum flow rate and residual urine volume]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanWang Q +6 more
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[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 PuWen YP +6 more
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[Extracellular matrix materials and tissue regeneration and repair]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhao L, Xie H.
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[Laparoscopic modified transcystic biliary drainage for the treatment of biliary stones and diagnosis of biliary disease]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanZhang L +6 more
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[ResLSTM-TemporalSE: an automated classification model for multi-lead ECG signals]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoQu M, Fu R.
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Dianci bileiqi采用固相烧结法制备ZnO-Bi2 O3基压敏电阻，研究了不同比例Al（NO3）·9 H2 O的掺杂对ZnO压敏电阻微观形貌、结构和电气性能的影响。通过X射线衍射仪（XRD）、场发射扫描电子显微镜（FESEM）及电化学工作站分别对样品的物相、形貌及阻抗性能进行表征。结果表明：Al （NO3）·9 H2 O的加入不仅具有促进ZnO晶粒生长和提升晶粒均匀分布的作用，而且能显著降低ZnO晶粒电阻，进而降低残压比。在Al（NO3）·9 H2 O添加量为（0 ～0.015）%（摩尔分数，下同）范围内 ...
王国群 +7 more
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