Results 71 to 80 of about 65,723 (122)
[A case report of benign paroxysmal vertigo of childhood complicated with patent foramen ovale and emotional disorder]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiWu D, Zeng X.
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[Electroencephalogram characteristics of 26 children with febrile infection-related epilepsy syndrome]. [PDF]
Zhongguo Dang Dai Er Ke Za Zhi, 2023 Zhang Y +5 more
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, 2016 本文研究了激光冲击强化对ZK60镁合金力学和摩擦磨损性能的影响,使用Nd:YAG脉冲激光器处理ZK60镁合金,分析了激光能量密度、单双面冲击和有无保护层等激光冲击强化工艺参数对ZK60镁合金力学性能的影响;同时测试了激光冲击强化处理前后ZK60镁合金耐磨性能的变化。实验结果表明:激光冲击强化可以提高ZK60镁合金的力学性能,高激光能量密度优于低能量密度的强化效果;单双面处理效果没有明显差别;没有保护层时激光冲击强化也可以提高材料的拉伸性能,但是激光会在镁合金表面产生蜂窝状烧蚀现象 ...
王浩 +4 more
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[Efficacy and safety of super electroconvulsive therapy for treatment-resistant depression: a retrospective analysis of 292 cases]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoAn J, Chi Z, Zhao C, Li Y, Wang R, Hu Y.
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, 2008 2004~2008年调查了西部电网电击猛禽情况。调查区域包括新疆、青海、四川、甘肃、西藏等省区。共统计10 kV和35 kV输电线路长度178 km、杆塔数1 800余根;收集线路附近鸟的尸体、羽毛、残骸等110件,用于鉴定鸟种。调查结果,被电死猛禽计79只(10 kV),平均每千米输电线路1.36只,11.31%的杆塔对鸟类构成威胁;35 kV输电线路上鸟巢数44个,平均每千米输电线路0.37个,至少6.06%杆塔被猛禽利用。已知24%~40%的跳闸停电事故是由于鸟类引发的。症结分析 ...
马鸣, 胡宝文, Andre Dwixon, 梅宇
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[Clinical application of dynamic visual acuity testing in patients with vestibular migraine]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiShi H +8 more
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[Randomized Controlled Trial of the Effects of Repetitive Transcranial Magnetic Stimulation and Mirror Therapy on Phantom Limb Pain in Amputees]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2022 Wang FY +7 more
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[Granulomatous primary central nervous system vasculitis in a child]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiZhang YN +6 more
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, 2004 对超高速冲击铝双层板的熔化效应进行了实验研究和数值模拟,用扫描电镜观察后板的弹坑发现:当弹丸碰撞速度超过5km/s时,后板出现熔坑;随着弹丸碰撞速度的增加,后板熔坑数目亦随之增加,碎片云对后板的破坏明显减弱。数值模拟表明,击波加热和塑性功加热是熔化的两种机制 ...
郑哲敏 +3 more
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