[Comparative study on implantation safety and stability of S <sub>1</sub> and S <sub>2</sub> sacral alar-iliac screws for sacroiliac joint fixation]. [PDF]
Chen Q, Ji F, Yin Q, Li D, Han X.
europepmc +1 more source
[Improved technique for perforation of patella combined with suture anchor and non-tourniquet for repairing acute rupture of the bone tendon junction of quadriceps tendon]. [PDF]
Wu G.
europepmc +1 more source
The Design and Realization of axis controller of Bolt Screwer
在现代工业生产过程中,螺纹联接由于稳定可靠、拆卸方便,而广泛应用于众多的机构装配当中。目前在中国,由于传统工艺和技术水平的原因,广泛应用在装配线上的是气动与液压扳手,其存在操作不方便、工人劳动强度大、效率低、角度和扭矩控制精度差,无法实现集中式管理等缺点。这也逐渐成为制约我国装备制造业发展的重要瓶颈。随着近几年装备制造业的飞速发展,对螺纹装配的效率和质量提出了更高的要求,自动螺纹拧紧机由于其装配效率高、控制精确、能够实现网络化等优点,逐渐应用于发动机、制冷压缩机、变速箱、机床 ...
田志鑫
core
[Research progress of magnesium and magnesium alloy implants in sports medicine]. [PDF]
Wu Y +9 more
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研究了四种常见优势底栖螺类的饥饿代谢(R,mgO2/ind.d)与温度(T,℃)、体重(Wd,mg dry-wt或Ww,mg wet-wt)的关系,并计算出三者间的复合关系,分别是:铜锈环棱螺,R=0.044Wd0.537e0.061T;长角涵螺,R=0.0004Ww0.9405·e0.0735T;纹沼螺,R=0.004Wd1.072e0.091T;短沟蜷,R=0.023Wd0.777e0 ...
闫云君,梁彦龄
core
[The cochlear extracellular matrix gene mutations and hearing loss]. [PDF]
Wang Q, Yuan Y, Han W.
europepmc +1 more source
[An animal experimental study of the loading time on anchorage implant stability]. [PDF]
Wu H, Feng Y, Li G.
europepmc +1 more source
[Clinical application of three-dimensional printed metal prosthesis in joint surgery]. [PDF]
Cui Y +9 more
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研制了一种高温防锈剂,通过将高温螺纹钢浸渍该防锈剂,模拟了螺纹钢轧后快速穿水冷却工艺。进行了盐雾加速腐蚀实验和电化学实验,比较了高温防锈剂SG处理与穿水冷却处理后螺纹钢的耐腐蚀性能。盐雾实验表明,SG试样第一锈点出现的时间较短,且连续腐蚀120h后,腐蚀增重较少,表现出良好的抗盐雾性能;电化学实验分析显示,对比螺纹钢不同部位(基体表面、横肋和纵肋)SG试样的腐蚀电位均较正,且腐蚀电流密度较低。采用扫描电子显微镜(SEM)和X射线衍射仪(XRD)方法,研究了2种处理方法下表面氧化铁皮微观组织和结构 ...
张娟娟 +6 more
core
[Synchronized neural rhythms in rat hippocampal CA1 region and orbitofrontal cortex are involved in learning and memory consolidation in spatial goal-directed tasks]. [PDF]
Tang L, Li J, Xu H.
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