Results 1 to 10 of about 3,701 (159)

Bibliometric investigation of the integration of animal personality in conservation contexts

open access: yesConservation Biology, Volume 37, Issue 2, April 2023., 2023
Abstract Consistent individual differences in behavior, commonly termed animal personality, are a widespread phenomenon across taxa that have important consequences for fitness, natural selection, and trophic interactions. Animal personality research may prove useful in several conservation contexts, but which contexts remains to be determined.
Sydney M. Collins   +16 more
wiley   +1 more source

Enabling conditions for integrating government institutions for disaster risk reduction and climate change adaptation in the SADC region and beyond

open access: yesRisk, Hazards &Crisis in Public Policy, Volume 14, Issue 1, Page 6-26, March 2023., 2023
Abstract Climate change, through extreme weather events, is increasing the risk and impacts of disasters. An increase in extreme weather events underscores the importance of bringing coherence in efforts to reduce the risk of disasters and to adapt to the impacts of the changing climate.
Livhuwani D. Nemakonde   +1 more
wiley   +1 more source

TBAB Semi-Clathrate Hydrate Formation and its Application in CO2Separation from CO2/CH4Mixture Gases [PDF]

open access: yes, 2017
水合物法气体分离技术是一种新型的CO2分离方法,不同的分离条件对CO2气体分离的效果影响显著。四丁基溴化铵(TBAB)的添加能显著改善CO2/CH4混合气水合物的相平衡条件,促进CO2水合物的生成。作者主要研究在质量浓度为40%的TBAB水溶液体系中,压力为3.2MPa下,不同过冷度及气水比例的条件对CO2/CH4混合气水合物的生成过程及CO2的分离效果的影响规律。实验结果表明,当压力为3.2MPa时,气水比越小,CO2分离效果越好。同时 ...
吴能友, 梁德青, 臧小亚
core   +1 more source

Effect of Inlet Temperature on Supersonic Liquefaction Characteristics of Natural Gas [PDF]

open access: yes, 2019
To reveal the effect of inlet temperature on the supersonic liquefaction characteristics of natural-gas mixtures, a mathematical model for the supersonic condensation flow of two-component natural gas mixtures was established in this study.
Bian Jiang   +4 more
core   +1 more source

高气压下O2对C4F7N/N2混合气体绝缘性能和分解特性的影响

open access: yesGaoya dianqi, 2021
由于SF6的大量使用对环境产生的影响巨大,因此替代气体的研究受到了广泛关注。C4F7N混合气体具有优良的绝缘性能和环保特性,有望替代SF6作为绝缘介质应用于气体绝缘设备中。为了减少放电过程中产生的有害固体副产物,需要在C4F7N/N2混合气体中加入一定体积分数的O2。文中探究了C4F7N/N2/O2混合气体应用于高气压电气设备的潜力,利用气体绝缘试验平台对0.6 MPa下含不同体积分数氧气的C4F7N/N2/O2混合气体开展击穿试验,同时利用气相色谱质谱联用仪(GC-MS ...
丁然   +5 more
doaj  

Study on Condensation Heat Transfer Performance of Natural Convection outside a Drop Tube Containing [PDF]

open access: yes, 2019
Based on the double-film and boundary-layer theories, a mathematical model of the gas- and liquid-film thicknesses and the heat transfer coefficient of a drop tube were established, which considers the vapor-liquid interfacial thermal resistance.
Jia Yiqiong, Li Huijun
core   +1 more source

Experimental study on the influence of oxygen concentration on spontaneous combustion characteristics of sulfur-containing anthracite [PDF]

open access: yes, 2023
In order to study the influence of different oxygen concentrations on low-temperature oxidation and spontaneous combustion of sulfur-containing coal, coal samples of No. 14 and No. 15 coal seams of Shanxi Shigang Coal Industry Co., Ltd.
Dongfang LI   +4 more
core   +1 more source

Numerical simulation of leakage and diffusion of buried pure hydrogen/hydrogen-doped natural gas pipeline [PDF]

open access: yes, 2023
In order to study the diffusion characteristics of pure hydrogen/hydrogen-doped natural gas in the soil environment, a three-dimensional leakage model of the buried pure hydrogen/hydrogen-doped natural gas pipeline was established by Fluent software.
Baojin QI   +3 more
core   +1 more source

Study on propagation characteristics of shock waves during the leakage of a high-pressure hydrogen/methane mixture [PDF]

open access: yes
The transition from traditional fossil fuels to the widespread use of hydrogen energy marks a critical phase in energy evolution. Hydrogen/methane mixtures, serving as crucial carriers of hydrogen energy, play a key role in this process.
Bin SU   +9 more
core   +1 more source

小钝头锥无粘平衡、非平衡绕流流场的数值分析 [PDF]

open access: yes, 1982
本文给出钝头细长锥无粘、平衡和非平衡高超声速绕流流场的数值分析。对存在化学反应的空气,考虑了13种气体组分和22个化学反应,包括N_2、O_2和NO的振动松弛与离介过程之间的耦合反应。头部亚-跨声速区和后身高超声速区分别用直线法和有限差分法进行计算。在来流条件M_∞=20~26,Re_∞=(p_∞u_∞α)/μ_∞=1.5×10~3~5.5×10~6(α为头部半径)的参数范围内,给出了绕流流场和等离子体鞘层诸特性,如激波形状 ...
周正瑾, 马文驹, 高智
core  

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