Results 11 to 20 of about 9,343 (114)
Gaoya dianqi, 2021 绝缘子表面污秽颗粒的粒径分布规律对研究绝缘子的污闪特性具有重要意义。文中通过开展自然积污试验,研究了不同类型绝缘子的积污颗粒粒径分布特性,重点分析复合绝缘子的积污过程,建立了颗粒物在硅橡胶表面沉降积聚的物理模型,并借助仿真软件分析了复合绝缘子表面粒径分布规律的形成机理,同时讨论了电荷积聚效应对积污的影响。结果表明,复合绝缘子表面沉积污秽颗粒的平均粒径略大于陶瓷和玻璃绝缘子,且粒径分布呈现对数正态分布规律,在20～30μm范围内表现出集中性。此外,若伞裙表面存在积聚电荷,则对大尺寸颗粒的吸附能力将会增加 ...
江渺, 姜昀芃, 卢明, 李黎
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Psychometric framework for coexistence with large carnivores
Conservation Biology, EarlyView.Abstract Human–carnivore coexistence is essential for biodiversity conservation, yet measuring the attitudes and behaviors that support it remains methodologically challenging. We developed psychometric scales to assess willingness to coexist with carnivores and the underlying beliefs of this coexistence through an iterative expert elicitation process ...
Benjamin Ghasemi +14 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The regeneration of osteoporotic bone defects is severely hampered by compromised endogenous healing capacity, demanding advanced strategies that actively orchestrate pro‐osteogenic microenvironments. Here, we report an integrated, self‐powered osteo‐regenerative system that uniquely leverages a dual ultrasound‐responsive piezoelectric ...
Bing Tan +6 more
wiley +1 more source
Dual‐Layer Solid Electrolyte Interphase Enables Effective Suppression of Lithium Dendrites
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The heterogeneous solid electrolyte interphase (SEI) at the Li metal anode often leads to slow and uneven Li+ flux, causing severe Li dendrite growth. Herein, we combine X‐ray photoelectron spectroscopy and cryogenic transmission electron microscopy to demonstrate that a dual‐layer SEI, consisting of an inorganic inner layer and an organic ...
Huaping Wang +4 more
wiley +1 more source
Functional Ecology, Volume 40, Issue 8, Page 2590-2601, August 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Permafrost thaw is reshaping nutrient dynamics in boreal forests, but its impacts on tree nutrient limitation and functional strategies remain poorly understood. Clarifying these responses is crucial for predicting the response of boreal forests to climate change.
Qiyue Fu +9 more
wiley +1 more source
Policy Studies Journal, Volume 54, Issue 3, August 2026.Abstract Studies of lobbying typically look at the extent to which interest groups realize political goals on issues they actively lobby for. Little is known, however, about the extent to which interest groups attain their political goals without making an active lobbying effort.
Marcel Hanegraaff +2 more
wiley +1 more source
Gaoya dianqi, 2016 随着特高压电网的建设,复合绝缘子以其优异的性能已被大量采用,然而表面电荷积聚将导致其沿面闪络电压下降,影响电网运行的稳定性。为了研究表面电荷的积聚效应,建立了复合绝缘子二维轴对称模型,并使用COMSOL软件对该模型进行了研究。研究表明:伞群表面是电荷积聚的主要位置,当其积聚电荷的极性不同时,对原电场分布的影响也不同。分析认为,负极性电荷积聚为电子越过伞群向前发展创造了有利条件,缩短了爬电距离,这可能是导致复合绝缘子闪络电压下降的原因;又对表面电荷积聚情况进行了实验测量 ...
李卓 +5 more
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切向电场主导下C4F7N/CO2混合气体中环氧复合材料表面电荷积聚特性及机理研究
Gaoya dianqi, 2023 气固界面的电荷积聚问题是诱发沿面闪络的重要原因，而当前C4F7N/CO2混合气体中电荷积聚特性的相关研究还不够充分。为研究C4F7N/CO2混合气体中表面电荷积聚特性及机理，本文通过指型电极构建极不均匀电场，测量了环氧复合材料在C4F7N/CO2混合气体中的表面电荷分布特性；进一步的，为理清表面电荷来源及迁移特性，测量了冲击电压下C4F7N/CO2混合气体中材料表面电位，比较了附加背板电极前后的表面电荷分布。研究表明，C4F7N/CO2混合气体与SF6中表面电位分布形态相似 ...
李金殊 +5 more
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Microstructure Engineering Toward High Cost‐Effective Nd–Fe–B Sintered Magnets: A Review
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Nd–Fe–B sintered magnets, critical for enhancing electromechanical conversion efficiency and operational stability in wind turbines and electric vehicle drives, are prized for their outstanding coercivity, high remanence, and superior maximum energy product.
Dongmin Zhang +5 more
wiley +1 more source
Gaoya dianqi, 2017 导电微粒污染是直流GIL绝缘强度劣化的重要影响因素,为研究其对柱式绝缘子表面电荷积聚的影响,文中搭建了考虑导电微粒情况的电荷测量平台。首先探究了绝缘子表面电荷积聚的时间效应,并在此基础上进一步研究了微粒附着位置、微粒长度、微粒直径对表面电荷积聚的影响。结果表明:附着绝缘子表面的导电微粒可引起表面电荷的积聚激增,其中与电极接触的微粒引起的电荷激增量更为显著;随微粒长度增加,微粒引起电荷积聚增强,而微粒直径对电荷积聚的影响并没有明显的线性规律;与正电荷相比,负电荷更易发生积聚。
李伯涛 +5 more
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