Results 21 to 30 of about 8,105 (117)
Dianci bileiqi, 2020 针对某变电站35 kV主变闸刀支柱瓷绝缘子异常发热问题,通过分析加压模拟测温、直流泄漏电流检测、绝缘电阻测试和超声波检测试验的结果,初步认为支柱瓷绝缘子异常发热的原因是瓷绝缘子内部存在疏松或裂纹等结构缺陷。为此,对该瓷绝缘子进行了解剖检查和空隙性吸红试验,结果表明瓷绝缘子内部确实存在疏松（黄芯）、裂纹缺陷。最后,对该瓷绝缘子异常发热问题,提出了一系列预防措施以供借鉴和参考。
孙庆峰 +5 more
doaj
Integrative Conservation, Volume 4, Issue 3, Page 430-441, September 2025.Our study identifies southern China, including mountainous regions and islands, as key areas rich in phylogenetic diversity, and phylogenetic endemism of lizards that are currently under‐protected. Current protected areas however do not adequately cover regions that are critical for preserving the evolutionary history of lizards.
Tao Liang (梁涛) +8 more
wiley +1 more source
Gaoya dianqi, 2018 介绍了一起220 kV GIS设备出线管母发热异常的分析处理过程。通过对红外测温、局放特高频检测、局放超声波检测、SF6成分检测等结果的分析,认为触头接触不良是导致发热异常的主要原因。经解体检查,发现导电杆与触指间存在明显刮痕,出线管母安装工艺不良导致电流不能均匀流过触指,从而引起发热异常。该起案例表明仅仅通过传统的回路电阻测试并不一定能有效发现接触不良缺陷,需结合其他检测手段进行综合评估。该次GIS设备异常的处理经验,为今后类似异常的处理分析提供借鉴与参考。
何良 +5 more
doaj
Veterinary Dermatology, Volume 36, Issue 4, Page 401-411, August 2025.Background – Itch is a common symptom in skin disorders. While the neural pathways of itch transmission from the skin to the brain are well‐understood in rodents, the same pathways in dogs remain unclear. The knowledge gap hinders the development of effective treatments for canine itch‐related disorders.
Chie Tamamoto‐Mochizuki +1 more
wiley +1 more source
People and Nature, Volume 7, Issue 7, Page 1749-1768, July 2025.Abstract Social‐ecological systems (SES) are coupled systems formed by the intricate interactions between humans and nature. Our movement towards sustainable lifestyles requires a robust understanding of these interactions. Achieving a sustainable win‐win situation for both social and ecological systems, therefore, necessitates a sound scientific ...
Na Sa +6 more
wiley +1 more source
Gaoya dianqi, 2020 高压隔离开关异常发热一直是电力系统当中长期存在的安全隐患,系统研究其异常发热现象并采取一定的技术手段对其进行实时监测具有重要意义。文中以GW6B-252型高压隔离开关为例,通过有限元数值仿真模拟探究了不同接触电阻、不同负载电流及不同镀层材料等3种因素对隔离开关异常发热的影响,在此基础上,通过实验获取了不同接触压力、污秽程度、蚀点程度、镀层材料、负载电流作用下隔离开关稳态热点温升的分布特性。对比分析仿真与实验结果,提出了不同影响因素对隔离开关热点温升的影响程度或表现形式不同的结论 ...
贾勇勇 +4 more
doaj
考虑配电网与电化学储能交互耦合关系的异常运行状态预警方法 [PDF]
全球能源互联网配电网稳定性直接关系到终端用户侧储能的运行质量。针对配电网异常运行场景下用户侧储能系统的安全问题，提出了一种热失控预警方法。该方法通过确立从配电网异常状态到用户侧储能的完整传导路径，识别了锂离子电池热失控的关键特征量，包括异常电流值/电压值和异常状态持续时长。进而建立了用户侧储能的状态演化模型，分析了这些特征量对储能安全运行状态的影响。仿真结果揭示了不同异常电气量变化对储能安全的具体影响，如异常电流值/电压值与储能异常温度的高正相关性，以及异常状态持续时长的强正相关性。基于此 ...
范培潇 +6 more
doaj +1 more source
Rare Metals, Volume 43, Issue 12, Page 6771-6780, December 2024.Graphical abstract The mechanical responses and structure variations of Ta80Co20 nanoscale metallic glass (MG) film samples upon cryogenic thermal cycling (CTC) treatment were studied. The simultaneous improvements of strength and deformation ability bring about a super‐high strength of 4.5 GPa and a large plastic strain of about 80% after CTC ...
Xiao Liu +8 more
wiley +1 more source
Gaoya dianqi, 2019 随着GIS在各级电网的广泛应用,运行中的各类缺陷也随之增加,其中外部导流排异常发热是一种较为常见的问题,外部环流是该类问题发生的先决条件。文中结合红外测温发现的几起异常发热实例,分析了缺陷原因并提出处理措施,为该类问题的分析提供借鉴和技术支撑。
宋东波 +5 more
doaj
Integrative Conservation, Volume 3, Issue 2, Page 112-126, June 2024.Integrating data collected by citizen scientists with data from traditional surveys improves our knowledge of reptile species distribution and richness. Data contributed by citizen scientist can inform reptile species abundance and rarity patterns in Brazil.
Lucas Rodriguez Forti +3 more
wiley +1 more source