Results 81 to 90 of about 40,487 (127)

[Comparative study on effectiveness of different puncture methods of flexible bone cement delivery device in treatment of osteoporotic vertebral upper 1/3 compression fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li T, Liu K, Zhang N, Hao G, Zhu Z, Qiao L, Song D.   +6 more
europepmc   +1 more source

纤维与橡胶复合结构抗拉压弯疲劳性能的测试装置及方法

本发明提供了一种纤维与橡胶复合结构抗拉压弯疲劳性能的测试装置及方法,该测试装置包括导辊系统、杠杆加载系统、试样条带和挤压预紧装置；导辊系统包括固定导辊和滑动导辊；杠杆加载系统设置于滑动导辊水平方向一侧且一端与滑动导辊的转轴连接；杠杆加载系统对滑动导辊施加一个向上的力，以完成对试样条带的加载；挤压预紧装置设置于试样条带外侧，其与试样条带的外侧表面接触连接并对试样条带的外表面施加挤压力。本发明能够使纤维与橡胶复合结构试样产生拉伸、压缩、弯曲变形，并能控制试样条带中各个组分分别产生什么样的变形 ...
郇勇, 田雨欣, 刘谟语, 王琮文, 代玉静, 李钰   +5 more
core   +1 more source

[Analysis of complicating factors in endodontic microsurgery]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Tan X, Peng L, Su Q, Xu X, Yang J, Song D, Wang C, Zhang L, Ye L, Huang D.   +9 more
europepmc   +1 more source

基于激光扫描的轻型模块柱初始缺陷分析及轴压稳定性能研究

Jianzhu Gangjiegou Jinzhan
轻型模块化钢结构建筑常采用非对称冷弯薄壁型钢柱构件，其轴压承载性能易受初始几何缺陷影响。文中针对轻型模块化钢结构建筑中常见的非对称冷弯薄壁单柱，以及实际工程中端部通过螺栓紧固拼合的长肢、短肢组合柱，开展了足尺轴压试验与初始几何缺陷影响效应研究。试验前采用三维激光扫描技术，对模块柱安装前后的几何形貌进行高精度测量，以提取初始缺陷特征并获取模块柱几何高程偏差。应用并验证了基于扫描点云模型向有限元模型转化的逆向重构法，实现了构件实际初始缺陷的精准导入；同时提出了基于扫描偏差的改进模态法 ...
余玉洁, 陈思凡, 王霄翔, 张艺川, 蒋丽忠, 杨志刚, 白金州   +6 more
doaj  

[Adhesive property and flexural strength of patterned microstructured zirconia posts fabricated by 3D printing]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Jiang Q, Yin L.
europepmc   +1 more source

[Clinical application of a modified double keystone design perforator island flap for repair of defects after excision of Bowen disease in posterior midline lumbar region]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wang Q, Li Q, Wang J, Wang X, Chen B, Li H, Wu X.   +6 more
europepmc   +1 more source

[Early- and mid-term effectiveness of bilateral bracing using percutaneous pinning supported by adjacent metacarpal bones and a cemented external frame for treatment of metacarpal shaft fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wang T, Ji L, Wang X, Zhang B, Tao L, Dong Y, Liu Y, Shu T.   +7 more
europepmc   +1 more source

[Short-term effecetiveness of endoscopic lumbar discectomy combined with annular suturing in treatment of lumbar disc herniation]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhang S, Yao F, Liao Z, Wang T, Shen M.
europepmc   +1 more source

[Endodontic retreatment of a maxillary second molar with chronic apical periodontitis and separated instrument: A case report]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Zang H, Liang Y.
europepmc   +1 more source

[Thoughts and Prospects on Precision Control and Intelligent Positioning Robotic Systems Applied in Nasojejunal Feeding Tube Placement]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Qiu Y, Hong R, Xiang G, Hong D, Zhang Y, Li K, Qian H, Dian S, Li K, Pu W.   +9 more
europepmc   +1 more source