Results 21 to 30 of about 725 (70)
Gaoya dianqi, 2023 六氟化硫(SF6)气体分解产物检测对于气体绝缘设备的故障评估和电力系统的安全监测具有重要意义。文中提出了一种基于SnS2纳米材料气体传感器检测SF6分解产物的方法，即采用水热法和丝网印刷法分别制备SnS2纳米材料和气体传感器，通过实验研究了该传感器对SF6分解产物H2S和SO2F2气体的最佳工作温度、响应特性、灵敏度和长期稳定性。测试结果表明，SnS2气体传感器在最佳工作温度200℃下，对两种SF6分解气体产物的响应与其体积分数之间线性关系较好，线性相关系数均大于0.980，且稳定性较好 ...
向英瀚 +6 more
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Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
New Phytologist, Volume 250, Issue 2, Page 1231-1247, April 2026.Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
wiley +1 more source
Gaoya dianqi, 2019 为了探索混合气体中SF6分解产物的检测技术,了解不同背景气体对SF6分解产物检测结果的影响,文中对比研究了CF4/SF6、N2/SF6等不同混合气体与纯SF6为背景气体条件下,SO2、H2S、CO等SF6分解产物检测结果的差异,研究表明,不同背景气体对SF6分解产物的检测结果影响不同,文中通过分析拟合得出了CF4/SF6、N2/SF6混合气体对SF6分解产物的检测结果的影响系数,并建立了几种CF4/SF6、N2/SF6混合气体为背景气体与纯SF6为背景气体条件下SF6分解产物转换的数学模型。
韩慧慧
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Policy Innovation in Barcelona and Utrecht: The Role of Advocacy Coalitions in Multilevel Contexts
Politics &Policy, Volume 54, Issue 2, April 2026.ABSTRACT This article explores how policy innovation in local social policies emerges within a multilevel governance context. Drawing on the Advocacy Coalition Framework (ACF), it examines how beliefs, coalitions, and institutional arrangements interact across different political arenas—European, national/regional, and local—to foster innovative social
Bruno Miguel Oliveira
wiley +1 more source
Gaoya dianqi, 2013 笔者结合吸附剂的吸附原理,搭建了吸附剂试验平台,设计了试验流程,完成了大量试验,旨在探索设备中吸附剂对气体分解产物定量检测结果的影响。文中主要研究了吸附剂对分解产物的吸附影响,通过试验研究,确定了影响SF6电气设备中分解产物检测结果的主要因素,包括容器材质、吸附剂种类、吸附剂用量、吸附剂安装位置等,并比较了相同条件下各种气体分解产物的吸附速率。文中结论对通过分解产物检测判断开关设备运行状况有重要指导意义。
苏镇西, 赵也
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Food and Energy Security, Volume 15, Issue 2, March/April 2026.ABSTRACT Net photosynthetic rate (Pn) serves as a key indicator for evaluating plant growth and yield. In order to explore an effective method for monitoring winter rapeseed Pn using unmanned aerial vehicle (UAV) multispectral technology, the winter rapeseed was taken as the research object and the multispectral images were obtained through UAVs in ...
ChengYang Ni +7 more
wiley +1 more source
Gaoya dianqi, 2011 通过在110 kV GIS（气体全封闭组合电器）设备中模拟局部放电故障,研究了在局部放电作用下电极材料、放电强度、气体湿度和吸附剂对SF6分解产物中SO2+SOF2和HF体积分数的影响及其变化规律。结果表明,电极材料、放电强度和吸附剂对SF6分解产物的生成有较大影响,而气体湿度对分解产物的生成影响不大。研究结果为通过SF6分解产物判断设备故障提供了理论基础。
龚尚昆 +6 more
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Gaoya dianqi, 2021 SF6/N2混合气体具有良好的绝缘性能和一定的开合电流能力并且可以降低对局部电场畸变的敏感程度、解决SF6气体的液化问题,可以大大减少SF6气体的使用量和排放量,减小对环境的温室效应影响,对加强节能减排和实现低碳发展具有重要意义。近年来,国家电网公司为响应国家节能减排号召,组织开展了SF6/N2混合气体用于GIS母线、隔离和接地开关的工作,研究确定了SF6/N2混合气体GIS母线、隔离和接地开关采用统一的30%混合比（SF6:N2=30%:70%）,多个厂家的产品通过了型式试验和新产品技术鉴定 ...
季严松 +8 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
wiley +1 more source
Gaoya dianqi, 2020 高压SF6开关设备运行中的放电故障（火花放电、电弧、局部放电等）诱导SF6分解为低氟硫化物,放电温度降低带来的SF6复合过程仍可保证设备具有良好的绝缘和灭弧能力。然而,当低氟硫化物与设备内无法避免的水蒸气和氧气杂质发生反应时,产生的腐蚀性产物会对设备的正常运行带来威胁,从而为利用SF6特征分解产物进行故障诊断提供依据。因此,文中利用气相色谱仪诊断技术对火花放电下SF6特征分解产物SOF2,SO2F2和SO2的演化特性进行研究,结果表明产物的摩尔分数随水蒸气和氧气体积分数的增加而升高 ...
付钰伟 +5 more
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