Results 31 to 40 of about 784,887 (166)
Dianci bileiqi, 2013 氧化锌是生产电阻片的主要原材料,氧化锌的理化性能对电阻片的质量起着至关重要的作用。通过对氧化锌的理化性能:主含量、杂质含量（钾、钠、铁、镉、铅）、粒度、晶型结构、水分、盐酸不溶物及金属锌含量进行测试分析。根据多年测试经验,对氧化锌测试方法及关键技术条件要求进行了可行性改进,并结合生产实际使用情况,跟踪分析电阻片质量状况,判断氧化锌理化性能要求对电阻片电性能的影响。研究表明,氧化锌中铁、金属锌及钠等杂质含量过多能使电阻片的漏流增大,铅杂质含量过多能使电阻片的方波性能下降,铜 ...
徐东, 李越, 李可菼, 王兰义
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Sodium metal batteries hold significant promise for large‐scale energy storage due to the high theoretical capacity and abundant sodium sources, yet sodium‐metal anodes are hindered by dendrite propagation, unstable solid electrolyte interphase, and poor cycling efficiency arising from uneven Na deposition and volume changes.
Nan Xing +7 more
wiley +1 more source
Gaoya dianqi, 2014 文章结合承担的国家科技支撑计划项目陈家镇智能社区项目,分析了智能微网系统电能质量环境特征,介绍了智能微网电能质量信息集成技术的总体实施方案,剖析了电能质量信息集成系统应考虑的主要环节及其各环节的主要功能,提出功能层整合、数据层整合、界面层整合是智能社区（微网）电能质量信息集成技术的关键。
时珊珊, 董瑞安
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Recovering palladium (Pd) from low‐concentration metallurgical wastewater still poses significant challenges. In this study, triaminoguanidine hydrochloride was used as the key functional site, and three guanidine‐functionalized covalent organic frameworks (GCOFs) were successfully constructed by adjusting the substituents (–H, –OH, and –OCH3)
Jiaxing Xiong +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Aqueous zinc‐ion batteries are plagued by anode challenges such as dendrite growth and corrosion, which stem from intrinsic surface heterogeneity. Although constructing a homogeneous interfacial layer is a promising strategy, conventional electrolyte additives often suffer from incomplete or unstable coverage.
Ke Huang +6 more
wiley +1 more source
Gaoya dianqi, 2005 介绍了一种基于实时操作系统（RTOS）的低压电能质量监测器的设计方法。根据电能质量监测的各种功能需求,对操作系统进行了裁减和改进,并移植到CPU上,并在此基础上开发了实现电能质量监测的各个任务函数。实际应用证明,采用实时操作系统作为运行平台的电能质量监测器,具有良好的运行实时性、稳定性和可靠性。
牛博 +4 more
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Lithium‐selenium (Li‐Se) batteries have attracted considerable attention due to their high theoretical specific capacity and the intrinsically good electronic conductivity of selenium. Nevertheless, low active‐material utilization, parasitic side reactions, and sluggish reaction kinetics hinder their practical application.
Yanan Fu +8 more
wiley +1 more source
Gaoya dianqi, 2010 通过对浙赣电铁开放式电能质量监测系统所获得的数据进行分析,从宏观上评估电铁运行沿线变电站电能质量的总体趋势。根据实际情况,结合重点变电站的现场实测数据,提出一种新型结构的电能质量复合治理方案,分别从电压和电流两方面解决电气化铁路给公用电网所带来的电能质量问题,同时在系统等值网络计算的基础上,给出了详细的补偿系统容量设计方法。仿真结果对此方案的成效进行了验证,其结论可为类似装置的设计和应用起到一定的指导与借鉴作用。
肖红霞, 范瑞祥, 彭汐单
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Atomically dispersed iron–nitrogen–carbon (Fe‐N‐C) catalysts have emerged as promising alternatives for oxygen reduction reaction (ORR) owing to their highly atomic utilization. However, maintaining both Fe atomic dispersion and dense Fe‐Nx sites (typically below 2 wt%) in Fe‐N‐C catalysts is still a key challenge.
Lijuan Wang +6 more
wiley +1 more source
, 2021 在物理学里，仿照爱因斯坦的质能关系，可以从数学形式上推导出一个类似的“电荷-能量”关系。即，电荷量的变化，可以伴随巨大的能量变化。太空中类星体的能量变化是否伴随电荷量或电场的变化，地球上实验室里微观粒子荷质比的精确测定，都是“电荷-能量 ...
Zheng-Ling YANG
core +1 more source