Results 11 to 20 of about 19,251 (262)

Experimental Investigation of the Breakdown Voltage of CO2, N2, and SF6 Gases, and CO2–SF6 and N2–SF6 Mixtures under Different Voltage Waveforms

Energies, 2018
This paper is devoted to a comparison study of the breakdown voltage of CO2, N2, and SF6 gases, and CO2–SF6 and N2–SF6 mixtures under different voltage waveforms, namely AC, DC, and lightning impulse voltages, in point–plane and sphere–sphere electrode ...
Abderrahmane Beroual, Usama Khaled, Mamadou-Lamine Coulibaly   +2 more
doaj   +2 more sources

Experimental Study on Performance of SF6+N2 Mixed Gas Insulation

MATEC Web of Conferences, 2016
This paper designed and constructed a 126kV GIS partial discharge test platform, performed frequency breakdown tests and lighting impulse tests at temperature of -30~20℃to SF6/N2 gas mixture.
Lu Gang, Su Zhen Xi, Xu Ou, Zhang Liang, Lan Gong Yu, Liu Yang, Zhang Hong Da   +6 more
doaj   +2 more sources

Effects of SF6 mixing ratio on DC positive streamer propagation in SF6/N2 gas discharge under a nonuniform electric field

AIP Advances
The determination of the low-temperature plasma propagation of SF6/N2 in gas discharge will accelerate the application of SF6/N2 in advanced electrical equipment.
Zhen Li, Yuanji Sun, Longfei Zhang, He Gao, Yaoxin Wei, Ji Liu, Shengtao Li   +6 more
doaj   +2 more sources

Determination of Drainage Effective Radius of CO2 Phase Transition Fracturing Based on Time-source Method

Meikuang Anquan, 2020
There is no uniform standard for determining the drainage effective radius of CO2 phase transition fracturing in view of the fact, we analyze the traditional measurement for drainage effective radius, clarify definition of drainage radius.
SUN Zhuoyue, YANG Dong, PEI Yue, SUN Liuwei, MA Xiaomin
doaj   +1 more source

A New Approach to the Analysis of Dissolved Gases Using Passive Samplers, With Portable Mass Spectrometry and Gas Chromatography Techniques. [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale Portable mass spectrometry systems such as miniRUEDI enable rapid and low‐cost field analysis of dissolved gases with high temporal resolution. However, they remain poorly suited for discrete small‐volume water samples. This study presents an approach based on passive sampling for groundwater and surface waters dissolved gases and ...
Picard A, Barbecot F, Lacheux M, Brennwald MS, Corcho-Alvarado JA.   +4 more
europepmc   +2 more sources

Outcomes of air versus sulfur hexafluoride tamponade in primary rhegmatogenous retinal detachment in phakic eyes

Journal of the Egyptian Ophthalmological Society, 2023
Purpose To evaluate the outcomes of using air versus sulfur hexafluoride (SF6) gas tamponade in management of primary rhegmatogenous retinal detachment (RRD). Study design Retrospective case-series comparative study.
Ahmed A Tabl, Mahrous H Shaheen, Ahmed A El Alim Mohamed, Marwa A Tabl   +3 more
doaj   +1 more source

Improving measurements of SF₆ for the study of atmospheric transport and emissions [PDF]

, 2011
Sulfur hexafluoride (SF6) is a potent greenhouse gas and useful atmospheric tracer. Measurements of SF6 on global and regional scales are necessary to estimate emissions and to verify or examine the performance of atmospheric transport models.
M. Rigby, Butler, J. H., Elkins, J. W., D. J. Mondeel, Nance, J. D., Dutton, G. S., Hurst, D. F., J. H. Butler, G. S. Dutton, J. W. Elkins, F. L. Moore, B. D. Hall, Hall, B. D., Mondeel, D. J., Moore, F. L., D. F. Hurst, J. D. Nance, Rigby, M.   +17 more
core   +1 more source

Complete Deconstruction of SF6 by an Aluminium(I) Compound

, 2021
The room-temperature activation of SF6, a potent greenhouse gas, is reported using a monovalent aluminium(I) reagent to form well-defined aluminium(III) fluoride and aluminium(III) sulfide products.
Mark, Crimmin, Daniel, Sheldon
core   +1 more source

Research on Environmental Protection Treatment for Ex-Service SF₆ Adsorbent

IEEE Access, 2020
SF6 adsorbents absorb many toxic SF6 decomposition products, such as SOF2, SO2F2, and H2S. Ex-service SF6 adsorbents that did not undergo environmentally friendly processing will seriously harm the environment.
Gang Wei, Yichun Bai, Min Hu, Zhengqin Cao, Wei Fu   +4 more
doaj   +1 more source

Observation of mesospheric air inside the arctic stratospheric polar vortex in early 2003 [PDF]

, 2005
During several balloon flights inside the Arctic polar vortex in early 2003, unusual trace gas distributions were observed, which indicate a strong influence of mesospheric air in the stratosphere.
Levin, Ingeborg, M. Pirre, Wetzel, G., I. Levin, T. Wetter, Levin, I., Schmidt, Ulrich (Prof. Dr.), Wetter, Thomas, Oelhaf, Hermann, Bönisch, Harald, Engel, A., Schmidt, U., Huret, Nathalie, Bönisch, H., N. Huret, Pirre, Michel, Oelhaf, H., H. Oelhaf, Schmidt, Ulrich, Reddmann, Thomas, Möbius, Tanja, K. Grunow, G. Wetzel, U. Schmidt, Wetter, T., Engel, Andreas, Haase, Hans-Peter, Grunow, Katja, H. Bönisch, A. Engel, T. Reddmann, Reddmann, T., H.-P. Haase, Möbius, T., Haase, H.-P., Wetzel, Gerald, Grunow, K., T. Möbius   +37 more
core   +1 more source