Results 11 to 20 of about 1,568,782 (173)
水电科技, 2023 带电作业工器具及电力安全工器具是电力运维工作中的重要组成部分，对于保障电力运维工作有效开展以及保护作业人员的生命安全具有重要作用。通过提高带电作业工器具及电力安全工器具的机械性能预防性试验的有效性，能够强化电力运维人员的安全保障，因此应当加强对机械性性能预防性试验的体系建设，从管理和规范两个层面出发，探索在人员、设备、标准等方面的缺陷，并以此为基础构建更为科学完善的检测体系。
Min Yin +4 more
semanticscholar +1 more source
Auto-focus technology and its application based on image processing [PDF]
, 2009 Auto-focusing technique is an important method to improve the precision,intelligentization,automatization for the indentation diameter measurement.The paper introduces an auto-focus method of indentation diameter measurement based on image processing ...
Chen, Xiaomei, Yang, Tao, Zuo, Yong
core +3 more sources
, 2020 复合薄膜因其可具有比单组份薄膜更加优异的性能而得到广泛的应用。通过以膜层的防护、催化、电学、光学以及力学性能等复合思想为切入点，阐述了通过膜层的复合掺杂旨在增强合金的抗腐蚀性，提高润滑摩擦性能，改善膜层的导电性能以及进行光学薄膜折射率和光谱吸收的调控，增强膜层的硬度及拉伸强度等机械性能的方法。对国内外的相关前沿成果进行简要介绍，并对复合薄膜的未来发展进行展望，为相关领域的研究提供参考。
Yun-Yun Shi, Jun-Qi Xu, Jun-hong Su
semanticscholar +1 more source
高机械性能的聚（丙烯酸-co-甲基丙烯酸十八酯）疏水缔合凝胶的溶胀行为研究
, 2010 以丙烯酸（AA）、甲基丙烯酸十八酯（OMA）、十二烷基硫酸钠（SDS）为原料,采用胶束共聚的方法合成了疏水缔合（HA）凝胶.在HA凝胶内部,表面活性剂SDS与疏水单体OMA组成的增溶胶束起到物理交联作用,将亲水的聚合物链交联起来.通过单向拉伸试验证实了该凝胶具有较高的机械性能.此外,也测试了HA凝胶在不同pH值溶液中的溶胀行为.结果显示,HA凝胶具有特殊的溶胀行为,其溶胀过程可以分为凝胶溶蚀、溶胀平衡和凝胶瓦解3个阶段.在强酸性条件下,凝胶的溶胀被抑制,没有出现凝胶瓦解阶段.在强碱性条件下 ...
Qing-Rui Chen +6 more
semanticscholar +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Heterogeneous structures have demonstrated great potential for overcoming the long‐standing strength–ductility trade‐off in metallic materials. In this study, a novel dual‐gradient structure, characterized by gradients in both grain size and precipitate distribution, was successfully constructed in an Mg–2Zn–0.8Gd (wt%) alloy sheet via sliding
Chunquan Liu +4 more
wiley +1 more source
Ultrasonic Vibration Assisted Laser Processing: A Hybrid Paradigm for Extreme Surface Enhancement
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Traditional laser processing techniques offer many advantages, but they often encounter limitations such as heat‐affected zones, recast layers, residual tensile stresses, and poor surface finish. The integration of ultrasonic vibration (UV) presents a promising hybrid approach to overcome these challenges by introducing beneficial effects like
Aziz Ul Hassan Mohsan +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Sodium‐ion batteries (SIBs) offer a promising, cost‐effective alternative for large‐scale energy storage due to the abundance of sodium. However, their practical deployment is challenged by sluggish interfacial kinetics and unstable interphase formation, which severely limit performance across wide temperature ranges. Here, we demonstrate that
Mingxing Zhang +10 more
wiley +1 more source
农业科学本文系统研究了我国花生收获机械化的关键技术突破、性能优化路径及实践应用效果。经对山东、河南等花生产区的实地调研与实验数据分析,总结了近年来花生收获机在夹持输送、摘果清选等关键环节的技术创新成果；分析了当前面临的技术瓶颈,包括农机农艺融合不足、丘陵山区适应性差、智能化水平低等问题,提出了通过智能化技术集成、农机农艺深度融合、适应性改进等优化路径,为提升我国花生收获机械化水平提供理论依据和实践参考。研究表明,优化后的花生联合收获机能够将作业效率提高20倍以上,损失率降至3%以下 ...
Xue-Ling-Li-Xue-Ling Li
semanticscholar +1 more source
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Conductive hydrogels show great potential in flexible electronics and biomedical devices, yet their practical applications are often hindered by insufficient mechanical strength, poor environmental stability, and limited functionality. To address these challenges, this study has developed a hydrogel platform that integrates diagnosis and ...
Wei Jiang +9 more
wiley +1 more source