Results 41 to 50 of about 1,567,380 (155)
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Ultrathin, lightweight, and mechanically compliant electromagnetic interference (EMI) shields are increasingly required for high‐frequency electronic devices. However, conventional metallic shields predominantly rely on conductivity‐driven reflection mechanisms, which become ineffective at reduced thickness and may cause severe secondary ...
Zida Zhang +7 more
wiley +1 more source
Gaoya dianqi, 2015 在智能变电站中,在线监测系统能够实时记录断路器机械特性数据,包括储能电机电流曲线、分合闸线圈电流曲线、分合闸行程曲线等,笔者结合液压式高压断路器机械特性的各种可能故障,分析断路器机械特性故障对在线监测结果的影响,给出了机械特性故障几率的计算方法和实际应用的参数,并通过对断路器故障的模拟,计算了实际的故障几率。这一方法能够实时了解断路器的运行状态,为保障断路器的安全可靠运行提供了重要的技术手段,已经规模化应用于智能变电站实际工程中。
王成友 +3 more
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Flexible, Robust Transparent Conductive Films With Excellent Electromagnetic Shielding Properties
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Transparent conductive films (TCFs) are indispensable components for next‐generation wearable electronics, intelligent robots, and electromagnetic interference (EMI) shielding devices. However, the fabrication of conventional random metallic mesh suffers from an inherent trade‐off between “randomness and controllability”.
Shanghao Lu +5 more
wiley +1 more source
Dianci bileiqi, 2022 圆柱头和圆锥头盘形悬式瓷绝缘子的内、外绝缘性能在理论上无本质差别。相比圆锥头瓷绝缘子，圆柱头瓷绝缘子重量明显减轻，可有效降低杆塔导线的机械载荷；并且对于材料性能经时变化有较好的分散和调整能力，使得产品不受过大应力及不均匀应力的长时作用，具有较高的可靠性。为进一步提升圆柱头绝缘子产品的机械性能，笔者在不改变绝缘子铁帽及瓷件结构的前提下，建立了钢脚参数化的精细仿真模型，通过有限元法计算分析钢脚几何参数对圆柱头瓷绝缘子机械性能的影响，为产品优化提供设计参考。
周学明 +6 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Biodegradable zinc (Zn)‐based materials are considered promising candidates for orthopedic applications because of their favorable mechanical properties, controllable biodegradability, and good biosafety profiles. However, their clinical translation is limited by early‐stage corrosion‐induced cytotoxicity and inflammation, as well as ...
Jinlong Mao +9 more
wiley +1 more source
, 2000 在古代,"机"、"器"、"械"都有不同的含义,"机械"通常指各种机巧的装置,"机器"的主要含义是机械装置。"机器"在17世纪成了与machina对应的词,19世纪以后被广泛用作machine的译名。"机械"的含义在19世纪与machinery基本一致。20世纪初,"机械"成为各种机械装置的泛称,其含义包括"机器"
张柏春
core
Mechanoluminescent Mixed‐Anion Borate Sr2B5O9Cl:Eu for Dynamic Anticounterfeiting
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Mechanoluminescence (ML)—the emission of light in response to mechanical stimuli—offers a direct and visually intuitive route for transducing mechanical information into optical signals. Herein, we report a mixed‐anion strategy to prepare mixed‐anion borate Sr2B5O9Cl:Eu phosphors through a facile, low‐temperature, and ambient‐atmosphere solid ...
Yuhong Han +7 more
wiley +1 more source
Gaoya dianqi, 1991 西安中航电器机械厂研制的GJY—C型多功能机械特性检测仪,经陕西省计量局、西安高压电器研究所和陕西省电子设备检测中心鉴定,有关电力行业试用,证明其操作简便,性能可靠,测试准确,是目前高压断路器机械特性测试的理想仪器。
张孟新
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Silicon–carbon composite anodes offer exceptionally high energy density, but their practical application is severely constrained by the structural instability and continuous evolution of the solid electrolyte interphase (SEI). In this work, moving beyond conventional LiF‐enrichment strategies, we propose a directional regulation approach based
Yao Liang +11 more
wiley +1 more source
Gaoya dianqi, 2019 针对高压直流断路器用的气体绝缘高速机械开关行程短、分闸速度高和机械冲击大的问题,文中提出一种气体缓冲系统用于降低触头运动速度和提高开关机械、电气性能。气体缓冲的高速机械开关的运动涉及瞬态电磁场、气流场和机械场等多物理场问题,文中采用多物理场耦合方法,利用有限元软件建立气体缓冲的高速机械开关动态模型,仿真了气体缓冲的高速机械开关运动特性,并分析了气体缓冲系统参数对开关动态性能的影响。仿真结果表明,电磁斥力机构的金属盘高速运动导致内部气流场变化和产生的气体阻力能有效实现高速机械开关的缓冲 ...
方春恩, 常晓丹
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