Results 31 to 40 of about 11,120 (193)

Optimized algorithm for speed-of-sound-based infant sulfur hexafluoride multiple-breath washout measurements. [PDF]

Pediatr Pulmonol
INTRODUCTION Major methodological issues with the existing algorithm (WBreath) used for the analysis of speed-of-sound-based infant sulfur hexafluoride (SF6) multiple-breath washout (MBW) measurements lead to implausible results and complicate the ...
Wyler F, Manogaran T, Monney N, Salem Y, Steinberg R, Kentgens AC, Jacobs C, Chaya S, Sena CRDS, Künstle N, Gorlanova O, Yammine S, Gray DM, Frey U, Oestreich MA, Latzin P.   +15 more
europepmc   +2 more sources

External-Cavity Quantum Cascade Laser-Based Gas Sensor for Sulfur Hexafluoride Detection

Chemosensors, 2022
The external-cavity quantum cascade laser (ECQCL) is an ideal mid-infrared (MIR) spectral light source for determining large molecular-absorption spectral features with broad transition bands.
Xingyu Pan, Yifan Zhang, Jiayu Zeng, Minghui Zhang, Jingsong Li   +4 more
doaj   +1 more source

Simulation of PD Optical Signal Mechanism Based on FCT Algorithm

Shanghai Jiaotong Daxue xuebao, 2020
The flux-corrected transport (FCT) algorithm is used to simulate the two-dimensional planar needle-plate structure of the positive streamer model and the partial discharge process of tip defects. The variations in electron density, net charge density and
ZHANG Yue, QIAN Yong, LIU Wei, ZANG Yiming, SHENG Gehao, JIANG Xiuchen   +5 more
doaj   +1 more source

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   +1 more source

Persistent outer retinal fluid following non-posturing surgery for idiopathic macular hole [PDF]

, 2013
Purpose: To present the anatomical and visual outcomes of patients with hypo reflective cystic defects in outer fovea (OFD) in macular holes repaired with non-posturing vitrectomy and short term gas tamponade.
Stephenson, John, Rahman, Rubina, Oxley, L., Oxley, Lucy   +3 more
core   +1 more source

Laboratory simulation of the formation of an ionospheric depletion using Keda Space Plasma EXperiment (KSPEX)

AIP Advances, 2017
In the work, the formation of an ionospheric depletion was simulated in a controlled laboratory plasma. The experiment was performed by releasing chemical substance sulfur hexafluoride (SF6) into the pure argon discharge plasma. Results indicate that the
Pengcheng Yu, Yu Liu, Jinxiang Cao, Jiuhou Lei, Zhongkai Zhang, Xiao Zhang   +5 more
doaj   +1 more source

Description of the science plan for the April 1995 CoOP experiment, `gas transfer in coastal waters', performed from the research vessel New Horizon [PDF]

, 1995
A description of the scientific questions, the engineering approach to answering those questions and preliminary results from an experiment off the coast of southern California are presented.
Haußecker, Horst, Bock, Erik J., Klinke, Jochen, Hara, Tetsu, McGillis, Wade R., Hansen, Kurt, Frew, Nelson M., Jähne, Bernd, Karachintsev, Andrey V., Dieter, Jochen, Nelson, Robert K., Uz, Mete, Edson, James B.   +12 more
core   +1 more source

Beef Steers and Enteric Methane: Reducing Emissions by Managing Forage Diet Fiber Content

Animals, 2023
Understanding the methane (CH4) emissions that are produced by enteric fermentation is one of the main problems to be solved for livestock, due to their GHG effects. These emissions are affected by the quantity and quality of their diets, thus, it is key
Daniel Santander, Juan Clariget, Georgget Banchero, Fabiano Alecrim, Claudia Simon Zinno, Julieta Mariotta, José Gere, Verónica S. Ciganda   +7 more
doaj   +1 more source

Environmental Effects of Electrically-Stressed Sulfur Hexafluoride

EPJ Web of Conferences, 2012
High Voltage (HV) equipment such as power switches, current or voltage transformers, and flexible HV transmission lines insulated by pressurized SF6 (or SF6/N2 mixtures) offer component compactness, high reliability and low maintenance demands compared ...
Palaiologopoulou Maria D., Mergos John A., Dervos Constantine T.   +2 more
doaj   +1 more source

The increasing atmospheric burden of the greenhouse gas sulfur hexafluoride (SF₆) [PDF]

Atmospheric Chemistry and Physics, 2020
We report a 40-year history of SF6 atmospheric mole fractions measured at the Advanced Global Atmospheric Gases Experiment (AGAGE) monitoring sites, combined with archived air samples, to determine emission estimates from 1978 to 2018.
P. G. Simmonds, M. Rigby, A. J. Manning, S. Park, K. M. Stanley, K. M. Stanley, A. McCulloch, S. Henne, F. Graziosi, M. Maione, J. Arduini, S. Reimann, M. K. Vollmer, J. Mühle, S. O'Doherty, D. Young, P. B. Krummel, P. J. Fraser, R. F. Weiss, P. K. Salameh, C. M. Harth, M.-K. Park, H. Park, T. Arnold, T. Arnold, C. Rennick, L. P. Steele, B. Mitrevski, R. H. J. Wang, R. G. Prinn   +29 more
doaj   +1 more source