Results 51 to 60 of about 117 (84)

[Cyclic fatigue resistance of nickel-titanium files made by Gold heat treatment in simulated S-shaped root canals at different temperatures]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Chen W, Hou X.
europepmc   +1 more source

高压开关用碟簧液压机构活塞杆激光熔覆工艺研究

Gaoya dianqi
为提高35CrMo基活塞杆关键部位的耐磨性，防止电镀工艺带来的镀层剥落失效问题。采用激光熔覆技术在35CrMo钢基材上制备不同工艺参数的20%WC/Ni基复合涂层，利用SEM、EDS、维氏硬度计和HRS-2M往复式摩擦磨损测试仪，研究了熔覆层的宏观形貌、微观形貌、显微硬度和耐磨性，最后采用激光熔覆最优工艺参数制备活塞杆并开展10 000次机械寿命试验。激光能量密度为63.3 J/mm2能够提高熔覆层组织均匀性、降低晶粒尺寸和提高熔覆层硬度；熔覆层组织越均匀、晶粒越细小有利于硬度、摩擦磨损等性能的提高 ...
张晓敏, 司晓闯, 舒明泽, 李凯, 苗晓军, 韩丽娟, 范艳艳, 牛溪野, 何流流   +8 more
doaj  

[Meige syndrome with dyspnea as main manifestation: a report of one case and literature review]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Liu T, Xu J, Ye J.
europepmc   +1 more source

[Comparative study on the effectiveness of improved and traditional Kirschner wire tension band fixation in treatment of type C patellar fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2021
Zhang J, Wan S, Zhong Z, Zeng J, Wu C, Tan L, Lin X.   +6 more
europepmc   +1 more source

[Clinical study of percutaneous short-segment injured vertebra pedicle screw fixation combined with bone grafting in treatment of thoracolumbar fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Jia L, Li X, Qian Y, Chen M.
europepmc   +1 more source

[Development of flexible multi-phase barium titanate piezoelectric sensor for physiological health and action behavior monitoring]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zeng Q, Han S, Liang Y, Tian X.
europepmc   +1 more source

[Changes of myocardial calcium currents in rats with myocardial injury induced by running exercise during acute hypoxia]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao, 2022
Dan Q, Bai J, Cai Z, Lin K, Li Y.
europepmc   +1 more source

[Study on mechanical properties of nitinol iliac vein stent and animal test under different release scales]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2019
Feng H, Wang S, Wang Y, Li X, Wang X.
europepmc   +1 more source

[Midterm effectiveness of percutaneous compression plate for femoral neck fractures in young and middle-aged patients]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2022
Wang T, Li R, Zhou J, Xu M, Geng D, Xu Y, Zhu F.   +6 more
europepmc   +1 more source

Formation of dentinal microcracks after root canal preparation with four kinds of mechanical nickel-titanium files. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Wang Z, Xue M.
europepmc   +1 more source