Results 11 to 20 of about 1,430,791 (187)
, 2011 根据磁瓶飞行时间谱仪磁场系统的基本要求，设计了一套符合其使用的复合磁场系统。最高强度达１．２Ｔ 的强非均匀磁场部分由永久磁铁和结构经过优化的截圆锥状磁极靴所产生。永久磁铁为Ｎ５２ 系列ＮｄＦｅＢ，磁极靴材料为高磁导率珀明德合金。强度为１．０×１０－３ Ｔ 的弱均匀引导磁场由半径为３ｃｍ、长度为３ｍ 螺线管提供。磁极靴与螺线管之间的距离为５ｃｍ。
王超, 康轶凡, 田进寿, 张美志
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Journal of Animal Ecology, Volume 95, Issue 7, Page 1178-1193, July 2026.This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
wiley +1 more source
Policy &Internet, Volume 18, Issue 2, June 2026.ABSTRACT AI‐generated images have become so good in recent years that individuals often cannot distinguish them from ‘real’ images. This development, combined with the rapid spread of AI‐generated content online, creates a series of societal risks. Watermarking, a technique that involves embedding information within the content to indicate their AI ...
Bram Rijsbosch +2 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He +13 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Dielectric polymers commonly suffer from severe performance degradation above 150°C, hindering advanced power systems. Herein, we demonstrate a polyetherimide (PEI) nanocomposite that overcomes this by mimicking the gradient architecture of nacre and bamboo, incorporating a continuous vertical gradient of fluorinated boron nitride nanosheets ...
Jian Wang +8 more
wiley +1 more source
Scenarios and strategies for future‐proofing ecosystem management under climatic novelty
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Climate change is driving unprecedented declines in dominant, habitat‐forming foundation species across marine and terrestrial ecosystems globally. As climatic novelty becomes the norm, ecosystem reassembly will become increasingly common. Predicting and understanding these transitions, and their implications for future ecosystem functioning ...
Lauren T. Toth +14 more
wiley +1 more source
人文与社会科学学刊在“健康中国”战略背景下，随着人口老龄化加速，银发经济成为增进老年人福祉、推动体育产业发展的重要领域，其中金牛区老年人体育消费现状备受关注。本文以成都市金牛区老年人体育消费现状为研究对象，采用文献资料法、问卷调查法（N=287）、实地考察法及数理统计法分析老年人体育消费现状。研究发现金牛区老年人普遍保持较高的体育锻炼积极性；体育消费场所多以免费场所为主，体育消费水平偏低；体育锻炼基础场地设施匮乏，老年人参与率有待提高；金牛区老年人体育消费动机多元化，消费项目传统且单一，亟须多样化以满足需求 ...
杨怡, 李宇, 黄仪
semanticscholar +1 more source
Gaoya dianqi, 2015 文中采用Deutsch假设和现场实测相结合的方法,分析了特高压、并行双回特高压直流输电线路下地面合成场强的分布特性。结果表明:基于Deutsch假设计算的结果与实测结果吻合,适用于实际工程合成场强的预测。双回特高压直流线路并行时,由于空间正负离子流的相互影响作用,其场强分布与导线排列方式有较大关系,两回路线路内侧极性相同时,并行线路之间区域合成场强较单回增加,内侧极性相反时,并行线路之间区域场强较单回减小。同时,随着两回线路之间距离的减小,或线路高度的增加,与单回路相比 ...
杨小玲 +4 more
doaj
Divine intimacy, frustration and the madness of the city: Changing transhuman kinship in China
Ethos, Volume 54, Issue 2, June 2026.This essay shows the affective resonances of the collision of gods, humans, and rapidly shifting landscapes in a newly urbanized part of Suzhou, China. The first section discusses how ties to spirits are not just metaphors or projections of human kinship, but literal parts of a kinship system that invoke responsibilities of care, based on links of both
Keping Wu, Robert P. Weller
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu +8 more
wiley +1 more source