Results 41 to 50 of about 2,055 (126)

Gravity‐Driven Inclination Sensor Based on Liquid Metal Interface Migration in Anisotropic Microchannels for Information Transmission and Continuous Surface Topography Scanning

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo   +6 more
wiley   +1 more source

InGaAsP/InP DC-PBH型单管激光器可靠性

open access: yesGuangtongxin yanjiu, 1989
本文介绍InGaAsP/InPDC—PBH型LD单管寿命试验、初期筛选老化及高低温循环实验情况。其结果是50℃时MTTF大于4000小时,采用0.9eV激活能外推室温(20℃)下,中值寿命大于10万小时,所观察到的寿命模式符合对数正态分布。
杨桂生   +3 more
doaj  

Selective Lithium Deposition Through 3D Copper Collector With Lithiophilic Alloy “Skins” and Curvature Boundaries for Dendrite‐Free Lithium‐Metal Anodes

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Although lithium metal has been regarded as an ideal anode material for high‐energy‐density batteries, its practical applications remain hindered by many serious challenges. Three‐dimensional (3D) porous Cu current collectors demonstrate potential in ensuring uniform Li deposition.
Meng‐Qi Zhu   +7 more
wiley   +1 more source

触发真空开关的触发寿命

open access: yesGaoya dianqi, 1987
触发真空开关是一种新型的高压脉冲开关。本文介绍了这种开关在应用中遇到一个重要问题——触发寿命问题。其中重点阐述了开关触发极的结构和特点,影响触发寿命的因素以及提高触发寿命的方法。
吴汉基   +6 more
doaj  

Porous Mn2O3@C Cathode With High Activity and Long Lifespan for Aqueous Zinc Ion Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Manganese‐based oxides are widely employed as cathode materials for aqueous zinc ion batteries (AZIBs) due to their low toxicity and high theoretical specific capacity. However, their inherent poor electrical conductivity, coupled with the dissolution of manganese into the electrolyte, often leads to structural degradation of the cathode.
Cheng‐Jie Yin   +5 more
wiley   +1 more source

真空断路器电寿命试验的微机控制和测量

open access: yesGaoya dianqi, 1993
阐述了真空断路器电寿命试验的重要性和用降低电压法进行真空断路器电寿命试验的基本原理。详细介绍了用微机控制和测试真空断路器电寿命试验的方法、原理及试验结果。
贾申利, 王季梅, 王毅
doaj  

特高压系统用电容器组开关弧触头失效分析

open access: yesGaoya dianqi, 2016
为了提高特高压系统用电容器组开关弧触头的使用寿命,在拟工况环境下对其进行电寿命实验,发现Cu W/Cu Cr弧触头在近千次开合实验后失效。通过对失效前后弧触头的形貌、成分、组织及性能变化进行分析研究,寻找影响弧触头使用寿命的主要因素。结果表明:特高压系统用电容器组开关弧触头除电弧烧蚀引起弧触头失效外,机械磨损及挤压变形也是影响其使用寿命的关键因素。因此,协同提高耐电弧烧蚀、抗机械磨损及挤压变形的能力是制备高电气寿命触头材料的关键。
张乔   +5 more
doaj  

[Cold stress reduces lifespan and mobility of C. elegans by mediating lipid metabolism disorder and abnormal stress]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao, 2022
Shi H   +7 more
europepmc   +1 more source

真空灭弧室长行程波纹管的电动特性

open access: yesGaoya dianqi, 1993
波纹管是决定真空灭弧室机械寿命的重要元件。日本在这方面有独到研究,Hamada等人曾写过一篇关于波纹管静止负荷(轴向应力、内压力等)下应力计算的文章,但论文未介绍当受到连续负荷影响时的波纹管的寿命情况。目前,长寿命波纹管的设计是建立在以波纹管的疲劳断裂试验结论为基础上的。 波纹管的寿命取决于波纹管上每个波的伸张度。增加波数是增加波纹管寿命和发展长行程波纹管的一种有效方法,但增加波数会带来以下两个问题。
马铜德
doaj  

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