Results 21 to 30 of about 94,906 (167)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Water electrolysis is a promising method for green hydrogen production, but slow hydrogen evolution reaction (HER) kinetics require efficient catalysts. In this study, we develop a Ni3S2/MoS2 heterostructure electrocatalyst using a work‐function‐driven electronic modulation strategy combined with a self‐sacrificial template approach.
Xinxin Zhao +11 more
wiley +1 more source
, 2020 本发明涉及一种区域电力市场多阶信用风险预警方法，为电力市场中决策节点的基础指标设定取值区间；选取样本数据；对基础指标分配相应的权重，将样本数据输入OWA算子，得出关联矩阵；建立基于IIM的电力市场多阶信用风险效应模型；将关联矩阵和一阶风险效应值输入基于IIM的电力市场多阶信用风险效应模型，得到电力市场中各个节点的多阶信用风险效应值；将电力市场中各个节点的多阶信用风险效应值进行对比分析，区分各个节点的保护等级。本发明消减交易主体失信行为对区域电力交易市场的瀑布风险效应 ...
金宇坤 +14 more
core
Dianci bileiqi, 2018 采用3D-FDTD电磁场数值算法对建筑物顶部雷电电磁场的畸变效应进行研究。考虑雷击高塔情况下,分析雷电电磁场在建筑物顶部的波形特征,探讨不同高度建筑物对电磁场波形的影响。仿真结果表明,当场点处存在建筑物时,雷电垂直电场的畸变效应较为显著,建筑物不仅会增强垂直电场的峰值,还会影响电场波形的多峰特征。而角向磁场的畸变效应较弱,建筑物仅对其峰值有一定的影响,而对其波形多峰特征的影响可以忽略。
宿志国, 吕伟涛, 王万富
doaj
Overreliance on Orthographic Similarity in L2‐Japanese Conceptual Processing by L1‐Chinese Learners
International Journal of Applied Linguistics, Volume 36, Issue 2, Page 1807-1820, May 2026.ABSTRACT Orthographic and phonological similarities between first (L1) and second (L2) languages can facilitate L2 processing. Particularly, L1‐Chinese learners of L2‐Japanese can benefit from the shared morphosyllabic Chinese characters (Japanese kanji/Chinese hanzi) because of their similar orthographies.
Xuehan Zhao, Kexin Xiong, Sachiko Kiyama
wiley +1 more source
Gaoya dianqi, 1984 一、基本原理 电磁场的数值分析法,可分为两大类:一类是先把待求电磁场问题提成偏微分方程和边界条件组成的定解问题,然后用差分法或有限元法求解;另一类则先用积分方程表示场源和场量之间的关系,再用矩量法或模拟电荷法等计算待求场量。 根据等效场源的观点,可把同一电场看成由单层形式分布的表面电荷或双层形式分布的表面电荷或点电荷、线电荷、面电荷等不同形式电荷分布的某种组合激发的。由于场源分布的不同,联系场量和场源的积分方程也不同。
陆忠亮, 肖衍明
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
wiley +1 more source
Dianci bileiqi, 2022 中国铁路接触网腕臂绝缘子冬季面临“雪闪”问题，研究多种积雪条件下，对平、斜安装腕臂绝缘子的电场特性影响，为绝缘子选型及优化提供理论依据。以QBG-25型棒式瓷绝缘子为研究对象，建立有限元电场模型，分析温度、积雪厚度、融雪覆冰厚度及污秽类型对绝缘子电场特性的影响。仿真结果表明：当温度低于0℃时，绝缘子电场强度随温度的降低先增大后减小，在-2℃时电场强度达到峰值；积雪厚度对电场强度影响呈现先增长后减小的变化趋势，各个伞裙电场强度与伞裙表面积雪形态有关，表面积雪程度严重但未完全覆盖时，电场强度畸变最严重 ...
李刚, 李彦哲, 李宝学
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Engineering the semiconductor/dielectric interface is crucial for advancing two‐dimensional (2D) nanoelectronics, where device performance is predominantly governed by interfacial defects and dielectric coupling. Optoelectronic doping based on carrier trapping at the h‐BN/SiO2 interface has enabled non‐volatile and reversible carrier ...
Zhe Zhang +6 more
wiley +1 more source
Cs2SnI6: A Perovskite‐Based Electromagnetic Wave Absorbing Material
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Lead halide perovskites and carbon‐based materials are interesting, high‐performing electromagnetic wave absorbing materials. However, only a few studies have been carried out to examine in detail the electromagnetic wave absorption properties of these materials.
Fei Han +11 more
wiley +1 more source
Gaoya dianqi, 2015 由于雷电的突发性和瞬时性,导致其产生的强电磁脉冲场难以直接测量,给雷电电磁场的研究带来了很大的难度。将斜向通道电流微元分解为垂直和平行于大地的分量,利用脉冲函数表示通道底部电流并结合雷电电磁场的TL模型,根据偶极子法求解Maxwell方程组,得到斜向通道电磁场的解析表达式;基于斜向通道模型,研究了雷电通道高度对不同场区地表回击电磁场的影响。结果表明,通道高度对电磁场的影响随着水平距离的增加而增加,在回击电流达到通道顶部之前,电磁场波形基本完全重合。
王浩, 陈亚洲, 万浩江, 王晓嘉
doaj