Results 91 to 100 of about 81,247 (279)
Gaoya dianqi, 2014 由于SF6气体的温室效应,减少SF6气体的使用具有深远的社会意义,用SF6/N2混合气体取代纯SF6气体作为高压电器设备的绝缘介质是减少使用SF6气体的有效措施。介绍了SF6/N2混合气体的优点。从气体放电理论出发,对不同比例SF6/N2混合气体的绝缘性能进行了分析,结果表明:SF6体积分数仅为20%的SF6/N2混合气体击穿强度为相同气体压力纯SF6的70%左右;若SF6体积分数为20%的SF6/N2混合气体的击穿强度要达到纯SF6气体的击穿强度,其总压力应为纯SF6气体的1.4倍 ...
牛文军, 魏俊梅, 张铎, 孙永恒
doaj
Research status of replacement gases for SF6 in power industry
, 2020 SF6 is widely used in the industrial field due to its stable structure and excellent properties. It is mainly used in electrical insulation equipment. Due to the boiling point of SF6, its use in extremely cold regions has been limited.
Shuangshuang Tian +7 more
semanticscholar +1 more source
JSFA reports, EarlyView.Abstract Background Livestock, especially ruminants, are a major source of global methane emissions, primarily produced by methanogenic archaea during enteric fermentation. We performed a systematic review and meta‐analysis to account for factors that could influence the relationship between ruminal methanogenic populations and methane emissions, such ...
Arlan Araujo Rodrigues +4 more
wiley +1 more source
Negative ion Time Projection Chamber operation with SF$_{6}$ at nearly atmospheric pressure
, 2017 We present measurements of drift velocities and mobilities of some innovative negative ion gas mixtures at nearly atmospheric pressure based on SF$_{6}$ as electronegative capture agent and of pure SF$_{6}$ at various pressures, performed with the NITEC ...
Baracchini, E. +5 more
core +1 more source
Journal of Ultrasound in Medicine, EarlyView.Objectives To compare the application value of 4‐dimensional hysterosalpingo‐contrast sonography (4D‐HyCoSy) and x‐ray hysterosalpingography (HSG) in intrauterine insemination (IUI) patients. Methods In this retrospective study, a total of 725 infertile patients who underwent IUI in Ganzhou Maternal and Child Health Hospital from January 2023 to June ...
Yongyu Xie +3 more
wiley +1 more source
Two-Level Fault Diagnosis of SF6 Electrical Equipment Based on Big Data Analysis
Big Data and Cognitive Computing, 2019 With the increase of the operating time of sulphur hexafluoride (SF6) electrical equipment, the different degrees of discharge may occur inside the equipment.
Hongxia Miao +4 more
doaj +1 more source
Modifications to Langley 0.3-m TCT adaptive wall software for heavy gas test medium, phase 1 studies [PDF]
The scheme for two-dimensional wall adaptation with sulfur hexafluoride (SF6) as test gas in the NASA Langley Research Center 0.3-m Transonic Cryogenic Tunnel (0.3-m TCT) is presented.
Murthy, A. V.
core +1 more source
Can hail and rain nucleate cloud droplets?
, 2017 We present results from moist convection in a mixture of pressurized sulfur hexa-flouride (liquid and vapor) and helium (gas) to model the wet and dry components of the earth's atmosphere.
Bodenschatz, Eberhard +4 more
core +1 more source
Variable Density Turbulence Tunnel Facility [PDF]
, 2014 The Variable Density Turbulence Tunnel (VDTT) at the Max Planck Institute for Dynamics and Self-Organization in G\"ottingen, Germany produces very high turbulence levels at moderate flow velocities, low power consumption and adjustable kinematic ...
Bewley, Gregory P. +4 more
core +1 more source
Laser &Photonics Reviews, EarlyView.A heterogeneous III‐V/SiN platform for lasers at 800 nm is realized using the micro‐transfer printing method. Efficient GaAs gain sections are directly butt‐coupled to SiN waveguides, enabling continuous‐wave and mode‐locked extended‐cavity lasers. The mode‐locked lasers generate highly stable pulse trains with repetition rates up to 9.2 GHz and a ...
Max Kiewiet +13 more
wiley +1 more source