Results 21 to 30 of about 13,500 (118)
Gaoya dianqi, 2022 高频变压器是DC/DC变换器的重要电气元件，其内部温度过高会加速绝缘老化，准确预测高频变压器的温度分布有助于其散热设计。文中考虑温度对高频变压器材料电磁特性和空气热物理特性的影响，利用Infolytica有限元软件建立高频变压器的瞬态磁场—温度场双向耦合模型，通过仿真分析，得到高频变压器的磁密分布、损耗分布和温度分布。在此基础上，根据高频变压器的散热路径建立其等效热路模型，计算出稳态温度分布。通过比较分析可知分别使用有限元法和等效热路法得到的计算结果相吻合 ...
孙晨茜, 李琳
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Mg‐based composites have been considered as promising structural materials for aerospace and automotive applications owing to their high specific strength and stiffness. However, their low room‐temperature ductility and absolute strength have limited their wide application.
Zhipeng Zhong +4 more
wiley +1 more source
Mechanoluminescent Mixed‐Anion Borate Sr2B5O9Cl:Eu for Dynamic Anticounterfeiting
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Mechanoluminescence (ML)—the emission of light in response to mechanical stimuli—offers a direct and visually intuitive route for transducing mechanical information into optical signals. Herein, we report a mixed‐anion strategy to prepare mixed‐anion borate Sr2B5O9Cl:Eu phosphors through a facile, low‐temperature, and ambient‐atmosphere solid ...
Yuhong Han +7 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2003 本文是针对鞍钢第二炼钢厂吊车梁加固而进行高温下高强螺栓连接性能的试验研究项目。试验中试件分别在200℃～450℃高温状态下加荷和在加温后冷却状态下加荷,得出了加热温度与滑移荷载（摩擦系数）的关系和摩擦系数的降低系数λ1与加热温度曲线的关系。最终得出在高温下高强螺栓应力松弛是促使滑移荷载下降的主要原因。提出了在200℃高温下高强螺栓连接性能是安全可靠的。
陈禄如
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Dianci bileiqi, 2021 红外测温凭借其高效、精确等优点,在特高压避雷器带电检测中发挥了重要作用,然而避雷器表面温度会受到风速、光照等外界因素的影响,给红外测温及故障诊断带来了一定的困难。笔者基于有限元原理建立了特高压交流避雷器热电耦合的三维温度场仿真模型,并通过现场温度试验验证了模型的合理性,从而利用该模型对不同风速、光照影响下的避雷器温度分布进行仿真分析,结果表明:风速增大加强了空气对流散热,使得避雷器内部缺陷发热导致的表面最高温度下降,温升减小;避雷器表面温度随太阳辐射强度的增大而升高,且向阳侧高于背阳侧,但温升值变化不大。
史晓航 +4 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT The composition and structural characteristics of metacomposites are crucial for tuning their negative electromagnetic parameters; however, the lack of a clear structure–property relationship severely limits their application in dielectric and magnetic fields.
Chunyuan Deng +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Ti3C2Tx MXene shows significant potential in the field of electromagnetic wave absorption; however, the wave absorption performance was hindered due to the impedance mismatch, which was caused by its inherent high dielectric constant. In this work, Ti3C2Tx MXene co‐assembled with molybdenum disulfide nanosheets and carbon coating layers (MXene/
Hualong Yu +11 more
wiley +1 more source
Functional Ecology, Volume 40, Issue 7, Page 2128-2142, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil organic nitrogen (SON) transformation is critical for global nutrient cycling and ecosystem productivity, yet how its responsiveness to climate change differs across diverse land use types remains poorly resolved.
Xinyi Yang +10 more
wiley +1 more source
Integrative Conservation, Volume 5, Issue 2, Page 225-235, June 2026.This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang +11 more
wiley +1 more source
四川大学学报. 自然科学版, 1988 在文[l]基础上,采用改进高温弧放电室结构设计的途径,研制了适宜高温工作的固气两用冷阴极轴向引出改进型彭宁离子源.源结构与改进图1为高温用彭宁源剖面图.针对高温工作时关键部件形变对源性能的影响及国外该源型磁场冷却壁紧靠高温弧室,难以实现弧室料炉内高温的结构弱点,本源作的改进是:
郑思孝
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