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温度对套管环氧胶浸纸绝缘频域介电响应的影响研究

open access: yesDianci bileiqi, 2023
为研究温度对环氧胶浸纸绝缘套管频域介电响应特性的影响,开展了环氧胶浸纸绝缘样片在高低温(10℃~120℃)循环下的频域介电谱测试,绘制了不同循环次数下环氧胶浸纸绝缘样片的频域介电响应特性曲线。结果表明:随着高低温循环次数的增加,在120℃时介质损耗因数、复合电容实部和虚部频谱曲线整体向上和高频方向移动,在10℃时在高频区域下介质损耗因数和复合电容虚部的频谱曲线整体向上移动,而复合电容实部的频谱曲线基本保持不变。10℃和120 ...
翟春雨   +6 more
doaj  

Challenges in Advancing LGBTQ+ Equity and Research in Southeast Asian Countries: A Brief Report

open access: yesSexuality, Gender &Policy, Volume 9, Issue 3, August 2026.
ABSTRACT This brief report provides preliminary findings on the challenges faced by academics, community workers, and other individuals involved in LGBTQ+ rights activism and research in Southeast Asia (SEA), with larger shares of participants from the Philippines, Malaysia, Thailand, and Vietnam.
Viet D. M. Trinh   +2 more
wiley   +1 more source

Justice in coexistence: Pastoralism and large carnivores on the Qinghai‐Tibet Plateau

open access: yesPeople and Nature, Volume 8, Issue 7, Page 2186-2199, July 2026.
Abstract The conflict between livestock husbandry and large carnivore conservation presents significant challenges in grassland ecosystems worldwide. Achieving sustainable coexistence among herders, livestock and large carnivores requires reconciling diverse perspectives and interests through equitable, inclusive and fair processes that address both ...
Yufang Gao, Yue Yu
wiley   +1 more source

Structure–Property Relationship‐Guided Mechanisms for Electromagnetic Wave Absorption, Triboelectric Generation, and Negative Permittivity in Magnetic Metacomposites

open access: yesRare 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

环氧胶浸纸套管绝缘特性的温度敏感性研究

open access: yesDianci bileiqi, 2021
为准确获取不同温度条件下胶浸纸套管绝缘性能变化规律,在高低温试验箱中开展了±100 kV穿墙套管在不同温度下的频域介电谱测试,获得了被测试套管的绝缘电阻、工频介损、工频电容量等绝缘特征参数。研究结果表明:胶浸纸套管各绝缘性能参量对温度变化的反应较为敏感,工频介损因数随温度的上升呈现先减小后逐渐增加的趋势;绝缘电阻随温度的升高逐渐减小,且减小幅度较大;在低频区域,胶浸纸套管的介损随温度的升高逐渐增大,高频区域相反,介损频域谱随温度的升高整体向高频方向移动;胶浸纸套管的复电容实部在高频段基本保持不变,C ...
张寒   +5 more
doaj  

Flexible parental care in a songbird correlates with sex‐specific responses to seasonal phenology, mating opportunity and reproductive success

open access: yesJournal 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

油纸屏障对变压器局部放电超高频检测信号的影响

open access: yesGaoya dianqi, 2009
受变压器内部复杂结构的影响,局部放电超高频信号在变压器内部的传播特性非常复杂。笔者通过变压器局部放电超高频实验研究,分析了油纸屏障对变压器局部放电被测超高频信号的影响。设计了油中气隙放电、油中沿面放电和油中电晕放电3种局部放电模型,在实验油箱中进行局部放电实验,采用超高频小环天线进行放电信号检测,在有无油纸屏障情况下获得了局部放电超高频信号实测数据,对所测局部放电超高频信号在时域和频域上进行了对比分析。结果表明,油纸屏障对超高频信号幅值衰减及信号功率谱有一定影响。
高红武   +4 more
doaj  

Too Difficult to Report? User Experiences With DSA and Community Guideline Reporting on Social Media

open access: yesPolicy &Internet, Volume 18, Issue 2, June 2026.
ABSTRACT User reporting of norm‐violating content on social media is a crucial component of platform governance. While prior research has explored the motivations behind reporting—often drawing on the Bystander Intervention Model—less attention has been paid to how users navigate the processes involved.
Ursula K. Schmid   +2 more
wiley   +1 more source

基于双重字典及联合特征的遥感图像超分辨率算法

open access: yes四川大学学报. 自然科学版, 2015
为了解决低分辨率遥感图像超分辨重建的问题,本文提出了一种基于双重字典及联合特征的遥感图像超分辨率算法.超分辨率重建技术目的就是根据低分辨率图像重建出原始高分辨率图像的高频信息.本文将图像的高频信息分解成为主高频信息和残差高频信息两个部分,然后针对主高频信息和残差高频信息,分别训练主高频字典和残差高频字典,并结合稀疏表示方法对图像进行重构.同时,为了建立更能反映图像内部结构信息的字典,本文联合图像的不同的结构特征,建立统一的字典.本文算法对图像取得较好的复原效果,复原出的高分辨率图像更接近于真实图像 ...
杨晓敏, 吴炜, 严斌宇, 张莹莹
doaj  

Anisotropic MoS2/SiC Aerogels: A Multifunctional Platform for Broadband Electromagnetic Stealth and Thermal Management

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song   +4 more
wiley   +1 more source

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