[Progress in antibacterial/osteogenesis dual-functional surface modification strategy of titanium-based implants]. [PDF]
Liu P, Fan B, Zou L, Lü L, Gao Q.
europepmc +1 more source
本实用新型涉及表面多弧离子镀膜装置。它由在真空室中密封安装通入气体的机构,真空室壁接地为阳极,其上安装至少一个欲镀材料的电弧蒸发源靶,并与直流电源的阴极相连接;在真空室底部有一放置工件的支架,支架下有向工件提供加热的机构和偏压的电源,在所述的真空室内电弧蒸发源靶下方安置至少一个直线型磁场线圈,和所述的支架下向工件提供偏压的电源是脉冲偏压的电源/直流偏压的电源 ...
张勇, 曹尔妍, 李成明
core
[Expert consensus in Southwest China on the application of botulinum toxin type A in upper and mid-facial aesthetics]. [PDF]
Sichuan Provincial Medical Association Medical Aesthetics and Cosmetology Specialty Committee.
europepmc +1 more source
采用等离子体电解氧化技术(Plasma Electrolysis Oxidation,PEO)在铸造铝硅合金表面制备了陶瓷层,电解液为磷酸盐系列。利用PEO自动采集控制系统对工作电流、电压进行实时采集,利用表面轮廓仪、SEM对陶瓷层的粗糙度和表面形貌进行了研究。结果表明:PEO过程中存在四个典型阶段性特征。所制备陶瓷层存在孔洞和微裂纹,尺寸随处理时间延长而增大。瞬态伏安特性研究表明,PEO存在阳极氧化和击穿放电两个重要特征,陶瓷的生长主要在击穿放电阶段,其陶瓷化过程为击穿放电、高温烧结、微弧熄灭 ...
徐方涛, 李光, 吴振强, 夏原
core
[Comparative study on accuracy of three imaging methods in diagnosis of subacromial impingement syndrome]. [PDF]
Zi L +7 more
europepmc +1 more source
[Tympanic membrane repair using improved endoscopic ear canal flap dissection method]. [PDF]
Sun H, Song R, Yu Z.
europepmc +1 more source
[Mid-term effectiveness of hip preservation in the reconstruction of ultrashort bone segments in the proximal femur with three-dimensional printed customized cementless intercalary endoprosthesis with an intra-neck curved stem]. [PDF]
Sheng H +12 more
europepmc +1 more source
配电网线路繁多,覆盖范围广,易遭受雷电袭击,破坏力度大。通过建弧机理和熄弧特性分析,中性点不接地方式虽不易建弧,一旦建弧难于熄灭,当系统电容电流较大时仍会有较高的建弧率。消弧线圈接地方式下若补偿度不足或者较高时,会加大接地电弧重燃概率。小电阻接地方式下虽可防护弧光接地过电压,但无法识别故障性质,无法处理高阻接地故障。因此可根据配电网不同的线路结构优化中性点接地方式以降低雷击建弧率。不接地方式仅适用于电容电流小于10 A的以架空裸导线为主的配电网 ...
郝树青, 何肖蒙, 张洋, 李华鹏
doaj
[Clinical application of a self-developed mouth opener with a tongue base retractor in the operation of deep part of tongue base]. [PDF]
Liang Y +5 more
europepmc +1 more source

