Results 21 to 30 of about 1,093,094 (159)
Gaoya dianqi, 2021 由于C6F12O具有优良的绝缘性能和环保特性,受到国内外SF6替代气体领域内学者们的广泛关注。为探索C6F12O混合气体应用的最优方案,研究O2对C6F12O/CO2混合气体绝缘性能和分解特性的影响。搭建气体工频击穿试验平台对不同O2混合比、不同气压的C6F12O/CO2混合气体进行工频击穿试验研究,使用气相色谱质谱联用仪（GC-MS）定性定量分析150次工频击穿后混合气体的分解产物,同时观察击穿后电极表面固体物质析出量的变化,探讨应用于工程的C6F12O/CO2混合气体的O2混合比与气压范围 ...
田双双 +7 more
doaj
Integrative Conservation, Volume 5, Issue 1, Page 59-73, March 2026.This research reveals the functional stability of mixed species foraging flocks (MSF) and their foraging height change with different taxonomic differences along the elevational gradient at Knuckles Montane Reserve, Sri Lanka. This offers new insights into how MSFs sustain with the elevational gradients supporting the altitudinal shifting species ...
Vimukthi. R. Gunasekeara +3 more
wiley +1 more source
Gaoya dianqi, 2016 采用混合气体是解决气体开关设备低温运行的有效途径之一。文中基于真实气体模型,建立SRK状态方程的迭代形式,给出了SF6与CF4气体压力值在0.11 MPa,温度在223323 K范围内压缩因子曲线,分析了温度与压力对压缩因子的影响,给出了不同压力与温度下,SF6与CF4真实气体与理想气体压缩因子的偏离情况,确定混合气体的压缩因子的混合规则,分析了温度与压力对压缩因子的影响,确定混合气体的混合规则,获得了SF6、CF4及混合气体饱和蒸汽压与等密度曲线,得到了混合气体在不同使用条件下的充气与补气方案 ...
钟建英 +4 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The detection of volatile organic compounds (VOCs) holds significant implications in environmental monitoring and disease diagnosis. Traditional gas detection technologies are constrained by complex operation and high cost, thereby failing to satisfy real‐time detection demands.
Yuening Wang +11 more
wiley +1 more source
Gaoya dianqi, 2016 文中以SF6/N2混合气体作为比较,研究了CF3I/N2混合气体中绝缘子在工频电压和正、负极性雷电冲击电压下的沿面闪络特性。结果表明:在0.10.3 MPa下,CF3I/N2混合气体中绝缘子的工频闪络电压和雷电冲击闪络电压均随气压升高而增大;在较低气压下,CF3I/N2混合气体中绝缘子的负雷电冲击闪络电压比正极性下要低,而当气压高于某临界值时,负极性下闪络电压又会高于正极性;绝缘子在含30%CF3I气体的CF3I/N2混合气体中的绝缘性能基本介于含20%/30%SF6气体的SF6 ...
张辉, 肖登明, 赵谡, 李冰
doaj
Integrative Conservation, Volume 4, Issue 4, Page 641-651, December 2025.Key Largo woodrats are a small and endangered island species, whose individuals tend to occur in family groups. Isolation from mainland populations, predation, and habitat fragmentation have caused genetic drift, leading to low overall diversity. Here, we found that a major category 4 hurricane promoted genetic diversity in the Key Largo woodrat ...
Taylor Ackley +5 more
wiley +1 more source
Gaoya dianqi, 2019 1 100 kV气体绝缘金属封闭输电线路（GIL）中SF6使用量较大,由于SF6气体具有很大的温室效应,因此,采用SF6/N2混合气体作为绝缘介质以减少SF6气体的使用量具有重要的社会意义。通过研究SF6/N2混合气体的绝缘、温升等特性,提出了适用于1 100 kV GIL的SF6/N2混合气体压力及混合比,研制了1 100 kV GIL样机,并进行了绝缘、温升试验研究,试验结果与仿真一致:混合气体压力不变的条件下,气体的绝缘强度随SF6比例的增加而增大,GIL导体、触指温升随SF6比例的增加而降低 ...
王志刚 +5 more
doaj
Global Change Biology, Volume 31, Issue 11, November 2025.This study assessed the potential impacts of climate and land‐use change on soil fungal diversity across four North American biomes. We found that climate change typically caused both diversity losses and gains, particularly in coniferous forests and among arbuscular mycorrhizal fungi, whereas land‐use change mainly reduced diversity, especially in ...
Wenqi Luo +5 more
wiley +1 more source
Global drivers of the conservation–invasion paradox
Conservation Biology, Volume 39, Issue 5, October 2025.Abstract The conservation–invasion paradox (CIP) refers to a long‐term phenomenon wherein species threatened in their native range can sustain viable populations when introduced to other regions. Understanding the drivers of CIP is helpful for conserving threatened species and managing invasive species, which is unfortunately still lacking. We compiled
Yanhua Hong, Zhiyong Yuan, Xuan Liu
wiley +1 more source
Gaoya dianqi, 2018 使用SF6/N2混合气体代替纯SF6气体作为GIS母线气室的绝缘介质,是一种大幅降低SF6气体使用量的新型技术。文中对该混合气体的温度和压力特性开展了研究,利用道尔顿分压定律、贝蒂—布里奇曼方程、理想气体状态方程对SF6/N2混合气体状态方程进行了推导,开展了混合气体温度压力试验,对SF6占体积比30%±2%的SF6/N2混合气体的试验测量数据和理论计算数据进行了对比分析,确定了该方程在工程应用上的有效性。根据研究绘制了混合气体温度压力特性曲线,为相关GIS设备以及气体监测仪表仪器的设计研发提供了依据。
齐卫东 +6 more
doaj