Results 21 to 30 of about 1,486 (126)
Discussion on the Improvement of the Reliability of Electromagnetic Relay [PDF]
, 2016 电磁继电器作为一种自动控制电气开关，广泛运用于各种控制电路中。当给予一个较小的信号输入量，如电、磁、光、热等信号时，它能够使被控制的电路实现自动切换。电磁继电器同时也是一种失效率较高的电子元器件，因其导致整机可靠性水平较低的问题历来受到广泛重视，如何提升继电器的可靠性是继电器制造企业一个非常重要的课题。尽管继电器是最早被用于可靠性研究的电子元器件，但由于历史原因，其研究对象主要限定在应用于航天航空领域的密封继电器，而那些应用于家电类继电器，因属于民用功率继电器，且价值相对较低，其可靠性研究被关注的较少 ...
江长流
core
Interface Issues of Inorganic Solid‐State Electrolytes in Secondary Magnesium Batteries
Rare Metals, EarlyView.ABSTRACT Solid‐state magnesium batteries (SSMBs) have gained significant attention as promising candidates for next‐generation safe energy storage systems because of the abundance of magnesium (Mg) in the earth's crust, superior energy density, and inherent nonflammability.
Jiren Wang +9 more
wiley +1 more source
Gaoya dianqi, 2012 弓网良好接触是保障机车稳定受流的关键,合适的弓网接触压力是弓网稳定可靠受流的基础。笔者研究了不同接触压力、牵引电流条件下的弓网静态接触电阻,并得到了弓网接触电阻的数学表达式。研究结果表明:弓网静态时接触电阻随接触压力、牵引电流增大而减小,接触压力小于7080 N,接触电阻所接触压力的增加,接触电阻激剧减少;大于7080 N后,接触电阻随接触压力的变化不明显,近似恒定关系。
王万岗 +8 more
doaj
, 2018 本公开涉及高电子迁移率晶体管。HEMT包括缓冲层、缓冲层上的空穴供应层、空穴供应层上的异质结构、以及源极电极。空穴供应层由P型掺杂半导体材料制成，缓冲层掺杂有碳，并且源极电极与空穴供应层直接电接触，使得空穴供应层可以被偏置以促进空穴从空穴供应层到缓冲层的传输。本公开的实施例使得能够在不降低击穿阈值以及在应力之前不增加通态电阻的值的情况下，消除应力对通态电阻的影响。This disclosure relates to high electron mobility transistor.HEMT ...
Alessandro Chini, Ferdinando Iucolano
core
Rare Metals, EarlyView.ABSTRACT Developing Cu‐based composites that simultaneously achieve ultra‐high strength, ductility, and electrical conductivity remains critical for advanced electrical contact applications. In this work, multiphase AlCrCuFeNi2.5 high‐entropy alloy (HEA) reinforcements are incorporated into CuCrZr matrix via spark plasma sintering (SPS) and annealing ...
Tao Hong +8 more
wiley +1 more source
Design of Elevator Control System Car Call Plate base on CAN-bus [PDF]
, 2010 随着经济社会的发展、城市化、工业化进程的深入，高层建筑大量涌现，电梯系统因此日益普及，已经成为人们生活中不可或缺的一部分。当今电梯系统功能日益增加，电梯系统智能化、安全性的要求不断提高，传统的继电器控制、PLC控制等方式已经越来越不适应电梯系统的各项要求，设计基于微处理器的电梯控制系统已成为行业发展的必然趋势。轿厢是电梯系统中人员乘坐的重要设备，电梯轿厢呼梯控制器是电梯控制系统的重要组成部分，设计带独立微处理器、基于CAN总线的电梯轿厢呼梯控制器符合行业发展的趋势，具有广泛的市场前景和迫切的现实意义 ...
苏昊
core
Implications of Tobacco Use on Pathogen‐Driven Diseases: A Public Health and Policy Perspective
World Medical &Health Policy, Volume 17, Issue 3, Page 468-474, September 2025.ABSTRACT The tobacco epidemic remains one of the most significant global public health challenges, responsible for over 8 million deaths annually, with a substantial portion occurring among non‐smokers exposed to second‐hand smoke. While cigarette smoking remains the most prevalent form of tobacco use worldwide, the rise of electronic nicotine delivery
Nadine Kabbani, James L. Olds
wiley +1 more source
Veterinary Dermatology, Volume 36, Issue 4, Page 474-484, August 2025.Background – Sporotrichosis is a chronic, mycotic infection caused by fungi of the genus Sporothrix. Zoonotic sporotrichosis occurs mainly through S. brasiliensis transmission, resulting from the organism's traumatic introduction via scratches or bites, or contact with exudate from contaminated cats.
Steffanie Amadei +6 more
wiley +1 more source
Return from exile: Mythology and heritage in American Born Chinese and its Disney adaptation
Popular Culture Review, Volume 35, Issue 2, Page 228-237, Fall 2024.Abstract Though American Born Chinese has received a significant degree of scholarly study, the prevalence of cultural exile in the text has not received sufficient attention. Said's theorization on exile provides a guide to examining the mindset of Jin, who willfully accepts exile from his Chinese‐American heritage because of how he feels neither ...
Joshua Fagan
wiley +1 more source
Gaoya dianqi, 2018 SF6高压断路器触头间的动态接触电阻是反映SF6高压断路器弧触头烧蚀程度的一个重要参数。研究弧触头动态接触电阻与弧触头的烧蚀程度之间的关系具有重要意义。基于电接触理论,建立了一个弧触头动态接触电阻仿真的理论模型。通过开断过程中的弧触头受力情况分析,得出在八触指自力型弧触头模型中,电流小于2 k A时,可忽略各种电动力的影响,只考虑触指接触压力的影响。在这个假设下,文中首次建立了简化的弧触头动态接触电阻的仿真模型。与大量弧触头模拟烧蚀试验结果对比,文中所提出的弧触头动态接触电阻仿真模型 ...
刘北阳 +6 more
doaj