Results 121 to 130 of about 375,564 (141)

[Protective effect of Streptococcus salivarius K12 against Mycoplasma pneumoniae infection in mice]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Su X, Liao D, Li C, Chen L, Wang J, Gan T, Luo H, Wu N, He J.   +8 more
europepmc   +1 more source

[Imaging and biomechanics researches of reconstructing lumbosacral stability after L ₅ vertebrectomy via anterolateral approach]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2017
Sun Z, Cheng Y, Li R, Ren J, Fang Q, Zheng Z, Liu X.   +6 more
europepmc   +1 more source

钢桁架在冲击荷载作用下的动态响应研究

Jianzhu Gangjiegou Jinzhan
圆钢管桁架在土木工程和海洋工程领域应用较多，除了承受竖向荷载外，还易遭受冲击偶然荷载作用。以偏心质量下抵抗冲击荷载的钢桁架为研究对象，利用LS-DYNA软件建立了节点冲击有限元模型。从破坏特征、冲击响应和耗能能力等方面研究了其抗冲击能力，对冲击次数、冲击速度和钢材屈服强度进行了参数分析，最后基于有限元模拟结果，提出了主管凹陷变形与转角之间的表达式。结果表明：经历多次摆锤冲击后，主管发生严重的凹陷变形，刚度显著降低；冲击速度达到3.0 m·s-1时，冲击力峰值提高了84.8 ...
张纪刚, 时成龙, 闫清峰, 刘菲菲   +3 more
doaj  

[Establishment of a canine model of vascularized allogeneic spinal cord transplantation and preliminary study on spinal cord continuity reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Chen J, Lan R, Zhang W, Qin J, Hu W, Wang J, Ren X.   +6 more
europepmc   +1 more source

[Real-time measurement of cell contractile force during activation of human hepatic stellate cell line LX-2]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2019
Wang C, Zhang F, Shan B, Liu J, Zhu L.
europepmc   +1 more source

新型高层模块建筑整体结构性能数值分析研究

Jianzhu Gangjiegou Jinzhan
作为新型装配式建筑形式，模块建筑可依据主要受力结构的差异，分为叠箱类模块结构与嵌入式模块结构。其中嵌入式模块结构在结构性能、建筑适用性及可维护性等方面具备技术优势，但存在柱距偏小、现场连接工作量较大等问题。为此，文中提出了一种基于稀疏钢框架的新型高层模块建筑体系。首先构建了该新型模块建筑的整体结构建模方法，再通过Midas Gen分析软件对其开展数值分析。初步分析结果表明：该结构框架柱长细比、框架梁跨度均较大，构件承载力由竖向荷载主导，侧向变形受水平荷载控制 ...
陈浩, 钟旭, 王霄翔, 石拓, 陈涛, 高志成   +5 more
doaj  

[Effect of different surface processes on the bond strength between zirconia framework and veneering ceramic]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi, 2017
Qi G, Huiqiang S, Yijun H, Jia C, Weishan D.   +4 more
europepmc   +1 more source

钢塔-组合塔混合结构结合部承载性能试验研究

Jianzhu Gangjiegou Jinzhan
针对新型钢塔-组合塔混合结构结合部构造，开展了局部缩尺模型轴压试验，并建立了非线性有限元模型与试验结果进行比较。研究了钢塔-组合塔结合部的极限承载力以及破坏形式，探究了钢板应变分布规律和焊钉受力分布规律，并对传力路径和荷载分担比例进行了变参数分析。研究结果表明：新型钢塔-组合塔混合结构结合部的承载力符合设计要求；结合部的破坏形式表现为承压板下方钢壁板达到屈服并发生鼓曲变形；承压板为结合部的核心传力构件，增大板厚可以提高结合部承载力以及承压板所传递的荷载，其厚度宜与外壁钢板厚度相近 ...
高晓沛, 张伟, 康福军, 朱尧于, 刘玉擎   +4 more
doaj  

[Implementation of control system and software design for limbs rehabilitation training based on PCI-1240]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2017
Zhu W, Xu X, Hu X, An M.
europepmc   +1 more source

[Research on mental fatigue information transmission integration mechanism based on theta-gamma phase amplitude coupling]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2018
Yang S, Ji Y, Li R, Wang L, Xu G.
europepmc   +1 more source