Results 131 to 140 of about 1,910 (185)

纤维增强高强高导铬锆铜弹簧触指

Gaoya dianqi
螺旋弹簧触指是高压开关关键零部件之一，对高压开关设备的性能起着至关重要的作用。针对现有牌号铬锆铜弹簧触指高导电、但强度、硬度低的性能瓶颈，文中通过设计高铬质量分数(10%~18%）铬锆铜合金配方，结合原位生成纤维技术，利用形变强化、固溶强化、界面强化等多种材料强化方式，制备出一种纤维增强高强高导铬锆铜螺旋弹簧触指。结果表明，该新型铬锆铜弹簧触指抗拉强度达791 MPa，导电率89.7%IACS，显微维氏硬度192HV0.1，达到力学性能和电性能的良好配合，各项性能指标均优于现有牌号铬锆铜弹簧触指 ...
李家梅, 袁佳, 张实, 贾一凡, 苏谋, 李伟   +5 more
doaj  

[Assessment on data processing methods for nontarget identification of per- and polyfluoroalkyl substances using liquid chromatography-high-resolution mass spectrometry]. [PDF]

Se Pu
Zhang BX, He QW, Han BC, Ma CD, Luo ZJ, Meng XZ.   +5 more
europepmc   +1 more source

[The influence of articular surface conformity on the biomechanics of rotating hinge knee prostheses]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Li Y, Zhang Z, Li L, Zhang J, Chen Z, Zhang W.   +5 more
europepmc   +1 more source

[Clinical characteristics and surgical outcomes of the endolymphatic sac tumor]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
He L, Xie J, Peng Z, Liu Y, Gong S, Wang G.   +5 more
europepmc   +1 more source

第50届国际水会议(IWC)论文摘要

Gongye shui chuli, 1992
高性能冷却水监测器的研究——PATRICIA ZUNIGA. KENNETH MILLER, MIKE WINTERS; IWC-89—34。冷却水处理方案的有效监测历史上一直是困扰最终用户的一个问题。随着非铬处理配方的出现,这个问题变的更加突出。这是由于铬系配方属无垢处理,因此对采用铬系配方的系统主要监测其腐蚀情况,然而目前所的铬系配方通常要在系统上结垢或在碱性条件下预膜后运行。因此采用非铬系配方的系统对污垢的监测要求很高。本文介绍了由Montana州立大学开发的一种新型高效冷却水污垢监测器。
doaj  

Clinical study of the effect of the metal precrown restoration in the first deciduous molar on the composite resin filling in the second deciduous molar. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Wang C, Zhang Y.
europepmc   +1 more source

Adrenal pheochromocytoma impacts three main pathways: cysteine-methionine, pyrimidine, and tyrosine metabolism. [PDF]

J Zhejiang Univ Sci B
Lai C, Yang Q, Zhang Y, Gong R, Wang M, Li J, Lai M, Sun Q.   +7 more
europepmc   +1 more source

[Effects of different materials for partial sciatic nerve ligation on glial cell activation in rat models of chronic constriction injury]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao, 2020
Wang C, Chen P, Lin D, Chen Y, Wu Z, Lin X.   +5 more
europepmc   +1 more source

[New progress in the diagnosis and treatment of jugular paragangliomas]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Jiang Z, Sun P, Han Y, Fan Z, Wang H.
europepmc   +1 more source

[Research Progress on the Mechanism of Gut Microbiota 
Influencing Lung Cancer Brain Metastasis via the Brain-gut Axis]. [PDF]

Zhongguo Fei Ai Za Zhi
Li D, Chen L, Lv P, Yang Q, Yang J, An D, Yu Y, Gao G.   +7 more
europepmc   +1 more source