Results 111 to 120 of about 20,505 (219)
Gaoya dianqi, 2013 基于电能质量议题认识的逐步深入,笔者从定义、指标及其指标特征等角度分析了电能质量与供电可靠性之间的相互关系,提出电能质量问题是供电可靠性问题的进一步延伸的思想,并主张电能质量指标的评价应结合其特征借鉴电力可靠性指标的更多内容。
陈晟
doaj
Preparation of glucose biosensor based on the fabrication of catecholamine polymers-Au nanoparticle composite film [PDF]
, 2016 摘要 糖尿病是一种世界范围内的公共健康问题。这种新陈代谢紊乱是由于胰岛素分泌缺陷或多糖症引起的，主要表现为血糖浓度高于或低于正常范围（4.4-6.6mM）。这个疾病是人类死亡的主要引发原因之一。因此，数百万人每天都需要检测他们的血糖浓度，这使葡萄糖成为最普遍的被检测物质。实际上，葡萄糖生物传感器占据了整个生物传感器市场份额的85%。而基于葡萄糖氧化酶（GOD）的电化学酶电极在日常血糖检测领域处于主导地位。 多种形式的葡萄糖生物传感器已被研发出来。但是，他们的表面修饰结构都有低灵敏度和非特异性检测等缺陷 ...
南旭
core
Rare Metals, EarlyView.ABSTRACT Low conductivity, slow ion‐diffusion, and limited reactive sites are common problems in electrocatalysts and electrode materials. In this study, a complex NiTe–CoTe heterojunction with abundant Te vacancies embedded in N, P, and F co‐doped hollow carbon nanorods (NiTe1−x–CoTe1−x/NPFC) was fabricated via a simple ionic liquid‐assisted ...
Mingjie Yi +7 more
wiley +1 more source
Gaoya dianqi, 2012 随着供电可靠性要求的不断提高,周期性停电进行设备性能检测的时间间隔加长,开关柜内空间狭小,对柜内各元件绝缘性能要求较高,在线检测其绝缘性能尤为必要。笔者采用开关柜局部放电声电波检测技术,并通过不同放电声强变化规律的研究,给开关柜内的局部放电活动提供判断依据,从而实现不停电对开关柜绝缘性能的在线诊断,有效提高设备安全稳定运行水平。
郑雷
doaj
Rare Metals, EarlyView.ABSTRACT Regulating negative parameters of metacomposites is mainly limited by their unclear mechanisms, which affects their practical applications in new sensing, communication, electromagnetic (EM) protection and other fields. This work proposes a dual‐functional competitive design strategy based on the waste corncob‐derived carbon/polyaniline ...
Qiuyun Yang +4 more
wiley +1 more source
Dianci bileiqi, 2002 对 MOA电阻片在不同温度下几项主要电气特性试验结果进行了分析 ,阐述了温度对电阻片主要电气特性的影响 ,给出了详细的性能参数随温度的变化曲线 ,使人们对国产电阻片的温度特性有一个较全面的了解和掌握 ,以采取有效的措施大幅度地改善电阻片的固有温度特性 ,提高电阻片的综合电气性能 ,减少高压、超高压 MOA的损坏事故率 ,发展高性能特高压 MOA,提高 ...
郭洁, 朱跃
doaj
Phosphothermal (high F-, low OH-) Synthesis and Characterization of the Novel Transition-Metal Fluorophosphates [PDF]
, 2015 过渡金属氟磷酸盐在锂离子电池、多孔吸附、磁性和催化等领域均有着广泛的应用，但过渡金属氟磷酸盐体系经历了几十年的发展，却因合成方法上一直未有突破而进展缓慢。由此，本文作者提出一种有效的合成氟磷酸盐的富F-贫OH-的磷酸溶剂热法，并运用此方法合成出30余种新化合物晶体。主要结果如下： （1）该论文探索总结出一种合成混合高价锰的新方法，合成出首个具有特异多级类clathrate结构的新型混合高价锰（Mn3+/Mn4+）氟磷酸盐MnIII6F12(PO3(OH))8[Na8K3.74((H3O)0.26(H2O)
任伟健
core
Rare Metals, EarlyView.ABSTRACT Dielectric ceramics are popular for energy storage materials because of their rapid charge–discharge characteristics, whereas their low energy density and efficiency hinder their miniaturization and integration. In this work, the energy storage performance is significantly enhanced through introducing Al2O3 and TiO2 into the 0.425(Bi0.5Na0.5 ...
Qiansi Zhang +9 more
wiley +1 more source
, 2013 金属探测器作为一种高科技产品,凭借其优越的性能,已广泛使用于考古勘探,并逐步与公众考古结合起来,成为文物发掘和保护的重要武器。本文通过介绍金属探测器的考古勘探原理、优越性及其在英美公众考古领域的应用情况 ...
杜晓俊, 汪常明
core
Electrolyte With Functionalized Boron Nitride Nanosheets for Dendrite‐Free Lithium Metal Anodes
Rare Metals, EarlyView.ABSTRACT Lithium metal batteries (LMBs) are regarded as promising candidates for the next‐generation high‐energy‐density storage systems due to their unparalleled theoretical energy density and low redox potential. However, the commercialization of LMBs is tremendously plagued by the barbaric growth of lithium dendrite and the intricate decomposition ...
Ji Zhou +5 more
wiley +1 more source