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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
Integrative Conservation, Volume 4, Issue 3, Page 405-415, September 2025.Assessing the genetic diversity of edible insects harvested from the wild is a pre‐requisite for designing conservation and management policies. The caterpillars of Gynanisa maja (Saturniidae) are harvested in large numbers in mopane woodlands in southern Africa, where they represent a seasonal source of income and nutrition to many rural communities ...
Zwannda Nethavhani +3 more
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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
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Design and verification on air inflow correction system of FSAE engine [PDF]
, 2014 针对限制器引起的进气管内压力损失会增加赛车实际油耗的问题,该文以单缸四冲程赛车发动机为研究对象,从混合气体空燃比控制、喷油量的控制和进气量测量3个方面分析了电喷系统,结合电喷系统的特点建立了进气量修正方案,在此基础进行了控制单元的硬件和软件设计。通过对发动机喷油脉宽的检测验证了进气量修正控制单元满足设计要求,达到了降低油耗、提高赛车竞争力的目的。In view of that the pressure loss in the air inflow pipe caused by the ...
吴新烨, 罗树友, 黄红武
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Application Research of Ion-Exchange Molecular Sieves in Oxygen-Argon Separation [PDF]
Inert gas argon has important applications in the fields of daily life, industrial manufacture and nuclear environmental monitoring. The key to its application is to selectively and efficiently separate and purify Ar from complex gas components. However,
Meng-yao MA +7 more
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Gaoya dianqi, 2003 为了探讨 N2/SF6混合气体代替纯SF6气体作为气体绝缘输电管道绝缘介质的可行性,通过对低含量SF6混合气体在不同混合比和压力下的工频及操作冲击耐电强度试验,分析了混合气体的绝缘特性。研究结果表明:在不改变现有输电管道结构和尺寸的情况下,可适当增加低含量SF6混合气体的压强来保证输电管道的绝缘强度。
周辉 +4 more
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The Study and Application on Using MAG Welding in Manufacture [PDF]
, 2009 摘要:制造业的整体能力和水平，直接关系到国家的经济实力、国防实力、综合国力和在全球经济中的竞争与合作能力，也决定着我国的现代化和民族复兴的进程。 作为一种高效率的焊接方法，CO2气体保护焊在我国工业经济的各个领域获得了广泛的运用。但是CO2气体保护焊还存在许多不足，在实际生产运用中并不是完美的，它还存在焊缝光滑度差，飞溅多等问题。 混合气体保护焊即MAG焊(MetalActiveGasARCWelding)是利用惰性气体Ar及部分活性气体CO2作为保护气体的一种气体保护焊方法，同CO2气体保护焊相比 ...
石江涛
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Comparative study on effect of microstructure characteristics on adsorption of CH4 and CO2 in anthracite based on molecular simulation [PDF]
In order to explore the effects of pore size, aromatic lamellar stacking degree, aromatic lamellar ductility, gas temperature and gas pressure on the competitive adsorption of CH4 and CO2, the No.3 coal from Jincheng mining area was taken as the research
Bing SHAO +6 more
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Gaoya dianqi, 2016 电气设备中SF6-N2混合绝缘气体已在中国寒冷地区应用较多,因其较低的液化温度,导致现有气体回收技术难以实现SF6-N2混合绝缘气体的高效、快速回收。为解决上述难题,文中介绍了一种两级膜分离回收技术,可高效快速分离混合气中SF6和N2,获得的产品气中SF6气体体积分数（V/V）达90%,借助后续压缩、制冷单元可实现50 m3/h混合气的快速灌装;同时文中也借助膜分离技术实现了尾气中微量SF6气体富集回收,富集后的SF6气体体积分数（V/V）达92%,且排空的混合气中SF6气体积分数（V/V）为600μL/
赵跃 +6 more
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SF6/N2混合气体GIS隔离开关小容量母线转换电流开断试验回路研制及试验
Gaoya dianqi, 2022 SF6气体因其温室效应受到众多限制,使用SF6与N2混合气体是实现GIS环保化的简便有效措施,已逐步应用于GIS等气体绝缘电力设备中。SF6/N2混合气体GIS隔离开关研制时,由于混合气体开断能力下降,母线转换电流开断能力成为限制条件,需要进行充分试验验证。大型试验站试验费用高、周期长,有必要搭建厂内小容量试验回路。文中开展SF6/N2混合气体GIS隔离开关小容量母线转换电流开断试验回路研制及试验。为便于在运设备改造,直接气体置换设计126 kV SF6/N2混合气体GIS隔离开关样机。参照GB ...
张民 +6 more
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