Results 71 to 80 of about 3,827 (149)

双剪拼接角钢主材的轴心受压试验研究

Jianzhu Gangjiegou Jinzhan
通过10组轴压试验对双剪拼接角钢主材的轴心受力性能进行了研究，探究了不同节点螺栓连接长度（120 mm、180 mm、240 mm）和包钢面积比（1.08、1.22、1.31）对拼接角钢主材轴心受力性能的影响，从试验构件的受压极限破坏模式、极限承载力和荷载-位移曲线三个方面展开了对比分析，研究表明：当角钢主材无拼接节点时，其轴压极限破坏模式表现为跨中截面处发生绕主轴的弯扭屈曲破坏，平面外变形最大，扭转变形小；当角钢主材采用双剪拼接节点时，其轴压极限破坏模式分为两种情况 ...
李杰, 何松洋, 李正良, 王锐, 蒲劭彤, 黄兴, 鄢秀庆   +6 more
doaj  

[Imaging anatomy study on utilizing uncinate process "inflection point" as a landmark for anterior cervical spine decompression surgery]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Jiang J, Ma J, Yang M, Han Y, Su L, Lei C, Ge C, Kang H.   +7 more
europepmc   +1 more source

节点约束对单面连接角钢受压承载力影响试验研究

Jianzhu Gangjiegou Jinzhan
为了研究节点约束对单面连接角钢受压承载力的影响，设计了一种弹簧支座刀口铰，通过试验研究了120根等边角钢的偏心受压稳定承载力。分析了其最小轴、平行轴布置时的破坏模式、承载力及变形形态，研究了不同节点约束、构造形式对其承载力的影响，并与国内规范进行了比较。研究结果表明：最小轴布置时，构件的失效模式为弯曲失稳，旋转轴介于最小轴和平行轴之间；平行轴布置时，构件失效模式为绕与刀口铰平行的主轴的弯曲失稳；构件长细比小于120时，其承载力主要受偏心控制，偏心越大，承载力越低；构件长细比大于120时 ...
鄢秀庆, 黄兴, 李正良, 何松洋, 刘翔云, 刘红军   +5 more
doaj  

[Application of Magnetic Resonance Imaging in the Diagnosis and Treatment of Middle Compartment Defect]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Luo S, Sun Y, Lei Y, Sun T, Peng C, Zhao Z, Miao Y.   +6 more
europepmc   +1 more source

[Mechanisms by Which Paraventricular Hypothalamic Nucleus Participates in the Acupuncture Treatment of Diseases]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Bai Z, Zhang C, Rao Y, Lin Q, Yu L, Liu J, Jing X, Li M.   +7 more
europepmc   +1 more source

[Short-term effectiveness of uni-portal non-coaxial spinal endoscopic surgery via crossing midline approach in treatment of free lumbar disc herniation]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li Z, Liu Y, Wen L, Chen B, Yang Y, Wang Y, Peng R, Song E.   +7 more
europepmc   +1 more source

[Evaluation of the accuracy of three-dimensional data acquisition from liquid- interference surfaces assisted by a scanner head with a compressed airflow system]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Xu X, Zhao J, Tian S, Liu Z, Zhao X, Zhao X, Jiang T, Chen X, Ma C, Sun Y.   +9 more
europepmc   +1 more source

Correlation between myocardial work and disease activity in rheumatoid arthritis patients with preserved left ventricular ejection fraction: a retrospective study based on non-invasive pressure-strain loop：. [PDF]

Clin Rheumatol
Yu X, Xi J, Wu J, Song R.
europepmc   +1 more source

[Effect of removing microglia from spinal cord on nerve repair after spinal cord injury in mice]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Jiang Q, Qi C, Sun Y, Xue S, Wei X, Fu H.   +5 more
europepmc   +1 more source

[Research progress of unilateral biportal endoscopy technology in cervical degenerative disease]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Tang R, Tan L, Lai G, Rong L, Zhang L.
europepmc   +1 more source