Results 31 to 40 of about 17,327 (130)
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Low‐temperature lithium‐metal batteries (LT‐LMBs) are increasingly pursued for higher energy density and extended cycle life, yet suffer from severely depressed interfacial Li+ desolvation/diffusion kinetics due to the enlarged solvation structures as well as organic electrolyte solidification, ultimately inducing much higher barriers to ...
Shikai Yin +14 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The electrocatalytic water splitting technique was widely taken for hydrogen evolution, due to its cost‐effectiveness and environmental friendliness. The design of electrode material as electrocatalysts play a key role in achieving high efficiency.
Yaling Zhu +5 more
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Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 756-763, June 2026.ABSTRACT Objectives Cytomegalovirus (CMV) is the leading cause of congenital infectious neurosensory impairment. We aimed to present national epidemiological data on maternal CMV infection during pregnancy in France, focusing in particular on primary infection in the periconceptional period or first trimester, and to assess the impact of changes in ...
P. Coste‐Mazeau +176 more
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四川大学学报. 自然科学版, 2007 本研究主要探索四川盆地丘陵区紫色土的电导率特征,并以相关分析法和模糊数学方法计算了研究区的土壤肥力综合指标值(IFI),分析其与土壤电导率间的相关性及定量关系,明确了紫色土电导率与土壤肥力水平的相关关系.研究结果表明,紫色土不同坡位电导率变化趋势,丘脚最大,丘顶最小;土壤肥力综合指数和土壤电导率有显著的相关性,其定量关系为:y=0.231e5.156x(r=0.500),因此在评价非盐碱化紫色土时,土壤电导率可以用来作为衡量土壤肥力综合水平的一个定量指标.
邓良基 +3 more
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Dianci bileiqi, 2020 配电线路遭受雷电直击极易引发相间闪络,需要合理计算相间闪络概率,研究相应防护措施。利用EMTP软件建立10 kV配电线路模型,计算线路遭受雷击时发生相间闪络概率,分析导线布置方式和杆塔接地电阻对相间闪络概率的影响。讨论不同绝缘措施、避雷器安装方式和设置间隔等防护措施的防护效果。研究结果表明:导线垂直布置方式下,雷击导线时三相电位差最大,相间闪络概率也最高;雷击线路相间闪络概率随着杆塔接地电阻的增大而显著增加。增大线路绝缘子串闪络电压对于改善线路相间闪络效果不明显,采用绝缘导线时相间闪络概率远低于裸导线 ...
彭凯 +4 more
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Political Cycles, Electricity Policy, and Mexico's Economy
Latin American Policy, Volume 17, Issue 2, June 2026.ABSTRACT Electricity reform in Mexico should stimulate economic growth, improve energy efficiency, and reduce greenhouse gas emissions. This article evaluates the successes and failures of reform and draws lessons across political cycles by analyzing changes in political dynamics—often tied to policy reversals—and the legal framework during the pro ...
David Bonilla
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Gaoya dianqi, 2011 高压直流输电线路电晕会带来严重的电磁环境问题。导线电晕已经成为影响特高压直流输电线路结构和建设费用的决定性因素。随中国电网的不断发展,特高压直流输电线路电晕问题开始受到人们的关注。在降雨过程中,导线表面会形成大量的雨滴,雨滴的存在严重影响导线的电晕特性。为了研究大气条件对直流输电线路电晕特性的影响,笔者利用电晕笼,研究了导线表面雨滴的电晕放电过程,以及导线表面附有雨雾和饱和雨滴的起晕电压和电晕电流特性。针对自然界中降雨电导率的差异,研究了不同电导率的雨雾和雨滴对电晕放电的影响。结果表明 ...
王清亮 +6 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT f–f electronic transitions of rare‐earth elements typically exhibit unique physicochemical properties that benefit the photocatalytic performance of the catalysts containing the elements. Although conventional rare‐earth metal oxides or single‐atom doping in semiconductors have been extensively studied, the construction of heterojunction ...
Yang‐Sen Xu +6 more
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Zhendong Ceshi yu Zhenduan针对覆冰输电导线舞动问题，基于概率密度演化法，提出了一种覆冰输电导线起舞概率分析方法。首先，建立了基于临界风速的覆冰输电导线起舞功能函数，结合具有3个平动自由度与1个扭转自由度的三结点索单元的有限元模型与李雅普诺夫稳定性定理，求解了覆冰输电导线起舞临界风速；其次，基于概率密度演化法，发展了一种覆冰输电导线起舞概率评估框架，并进行覆冰输电导线起舞概率的计算与分析；最后，获得了某单跨覆冰导线算例的起舞概率并进行了参数分析。分析结果表明：本研究方法可准确计算该单跨输电导线的起舞概率 ...
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Zhongguo shiyan zhenduanxue, 2013 目的探讨尿电导率变化的影响因素,并分析其作为肾脏功能评估指标的临床价值。方法使用全自动尿中有形成分分析仪UF-1000i（简称UF-1000i）检测3000名患者的尿电导率数值,并对结果进行分组分析。结果健康新生儿与健康老年人尿电导率比健康成人对照组低,但差异无统计学意义;孕晚期妇女尿电导率与健康女性对照组相比,明显降低,差异具有统计学意义。肾病综合征组、肾小球肾炎组尿电导率较健康对照组明显降低,差异具有统计学意义。结论年龄对尿电导率具有一定影响 ...
李花, 宋鉴清, 王银玲
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