Results 91 to 100 of about 2,365,030 (141)

[Finite element analysis of CT-based lateral classification of Japanese Investigation Committee type C1 osteonecrosis of femoral head and its prognostic value]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Luo G, Yang F, Han M, Tian L, Lu S, Lin K, Han L, Wei Q.   +7 more
europepmc   +1 more source

[<i>Xiaoyao San</i> alleviates abnormal α‑syn aggregation and neuronal injury in a <i>Caenorhabditis</i> elegans model of Parkinson disease <i>via</i> the SKN-1 antioxidative pathway]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Ye L, Liao Y, Liu Q, Zhang J, Gao L, Dong Z.   +5 more
europepmc   +1 more source

超快激光作用下纳米薄膜热/力响应研究

, 2009
研究了飞秒激光脉冲作用下纳米金属薄膜的微尺度传热机制和动力学响应。利用Cattaneo热本构模型和两步温度模型分析了微尺度传热机制，利用Falkovsky和Mishchenko的热弹性模型研究了超快激光加热过程中纳米金属薄膜的动力学响应。采用有限元法对相应的非线性多场耦合初边值问题进行了求解。得到100fs脉冲激光辐照下200nm厚的金膜的瞬态温度场和应力场，研究了晶粒尺寸效应对热/力行为的影响。数值结果表明：非平衡现象明显地增大了热导率，对电子的热波波速产生明显影响；尺寸效应减小了热导率 ...
马维, 周志平
core  

基于铜-环氧树脂结构界面的盆式绝缘子开裂失效机制研究

Dianci bileiqi
本文基于某330 kV变电站分段间隔开关室漏气故障中盆式绝缘子开裂事件，研究铜-环氧树脂结构界面处开裂失效的机制。通过开展盆式绝缘子整体宏观检查、渗透检测、射线探伤以及断口的微观分析工作，发现盆式绝缘子开裂起始于环氧树脂与内部屏蔽环铜丝和螺栓孔嵌件的结合处，该处属于应力集中及结构薄弱区域，在螺栓预紧力及两侧SF6压差作用形成的环向拉应力和弯矩作用以及环氧树脂盆体自身残余应力综合作用下发生开裂，并在运行过程中受温差应力、压差应力，操作应力以及绝缘子内部自身残余应力等共同作用下不断拓展至密封槽，最终造成漏气。
张素慧, 谢金鹏, 蒋菲, 张兆钰, 滕玉林   +4 more
doaj  

[Quantitative susceptibility reconstruction guided by a multi-scale T1-weighted image attention mechanism]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Li P, Tao Q, Oyang F, Guo B, Hu Q, Feng Y.   +5 more
europepmc   +1 more source

[Development of a nomogram prediction model for re-tear after arthroscopic repair of massive rotator cuff tears]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Yang Z, Ruan W, Pan W, Li D, Yu Y, Zhao L.   +5 more
europepmc   +1 more source

[Self-designed experiment in instrumental analysis： online solid phase extraction-high performance liquid chromatography- post column derivatization for the determination of trace pesticide residues in vegetables]. [PDF]

Se Pu
Li Y, Liu YT, Huang X, Zhou ZY, Wang ZQ, Wang J, Ding F, Nan J, Tang A.   +8 more
europepmc   +1 more source

[Activation of the CaMKKβ/AMPK/HIF-1α signaling pathway promotes angiogenesis in endometriosis by regulating mitophagy]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Chen Y, Yue B, Wu Q, Mao H, Ji X, Chu C, Chen L, Zhang Y, Li B, Zhang X, Feng P.   +10 more
europepmc   +1 more source

[A simulation study on the differences in compressive mechanical properties of Voronoi porous structures with two strut-diameter morphologies]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Men Y, Wang T, Wu M, Zhang C.
europepmc   +1 more source

[Development and performance testing of a high-sensitivity pulsed flame photometric detector]. [PDF]

Se Pu
Chen JB, Cai HY, Deng ZH, Jin YJ, Sun JH.   +4 more
europepmc   +1 more source