Results 61 to 70 of about 356,680 (117)
[How I treat pediatric febrile infection-related epilepsy syndrome]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiDeng XL, Peng J.
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, 2008 对海流载荷下管道在砂质海床上侧向失稳的物理过程进行了试验模拟,分析了管道侧向失稳的典型特征.水动力试验发现,管道侧向失稳经历了三个特征时间:①砂粒起动,②管道轻微侧向位移,③管道侧向失稳.利用机械加载装置分别研究了两端自由和防滚两种端部约束条件下管道在侧向失稳过程中的侧向土阻力及管道沉降特征.实验发现,随着管道水平位移的增加,侧向土阻力逐渐增加并最终达到极限值;而端部约束条件对极限侧向土阻力及其与管道沉降量之间的关系影响较大.两种模型试验结果具有较好的对比性 ...
闫术明, 高福平, 吴应湘
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[Arthroscopic-assisted closed reduction and internal fixation with absorbable screws for Hawkins type <b>Ⅱ</b> talar neck fractures]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiDong Z +6 more
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, 2012 激光诱导冲击作用(Laser induced shock)是利用高功率密度(>10~9W/cm~2)的激光束辐照材料或者涂层表面,被辐照介质在瞬间转化为等离子体并不断吸收激光能量,而等离子体的膨胀又受到约束层的限制从而向靶材内部输入短脉冲高强度的冲击波。对于常规金属材料,这种冲击作用使得材料表层发生屈服并残留有很大的压应力,同时形成密集、稳定的位错结构,从而抑制疲劳或腐蚀裂纹的萌生与扩展,能够显著提高材料的抗疲劳、抗腐蚀、抗磨损等表面机械性能,这种表面改性技术被称为激光冲击强化(Laser Shock ...
夏伟光 +5 more
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[Research progress in surgical treatment of calcaneal fracture malunions]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiJi D, Wang Q, Zhao H.
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, 1997 研究了激光热冲击条件下静态受拉SiC颗粒增强6061铝合金材料的热断裂行为.热冲击用的激光束的脉宽分别为1.0ms和250μs,激光束辐照在缺口的根部附近,对于热冲击下裂纹的产生及扩展进行细致的宏、微观观察 ...
杨奇斌 +3 more
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[Effectiveness of arthroscopic treatment for femoroacetabular impingement syndrome combined with ligamentum teres injury]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiHan S, Li S, Jia D, Li Y, Cai G.
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[Study on occurrence of anterior ankle pain after distal tibial extra-articular fractures treated with retrograde tibial intramedullary nail]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiXiong Y +5 more
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, 1995 本研究采用激波管,探讨了发泡镍对肺冲击伤的防护效果和防护机理。结果表明,发泡镍可明显减轻肺冲击伤的程度,降低死亡率。发泡镍的防护作用可能与其降低冲击波超压峰值、延长正压上升时间和缩短正压作用时间有关 ...
赵双录 +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.
europepmc +1 more source