Results 11 to 20 of about 177,198 (268)
About Gas Permeability and Diffusion through Concrete
Materials Proceedings, 2023 Gas production is expected in radioactive-waste storage structures. This will induce a slow increase in gas pressure, which necessitates the study of gas transfer at a low pressure. In this special case, calculations of the flow through storing materials
Takwa Lamouchi +4 more
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Diffusion in the Lorentz Gas [PDF]
Communications in Theoretical Physics, 2014 The Lorentz gas, a point particle making mirror-like reflections from an extended collection of scatterers, has been a useful model of deterministic diffusion and related statistical properties for over a century. This survey summarises recent results, including periodic and aperiodic models, finite and infinite horizon, external fields, smooth or ...
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Economic Analysis of Boron10 Isotope Production by Gas Diffusion Method
Journal of Isotopes, 2022 10B is an important isotope in neutron absorbing and neutron detecting. At present, the method of large-scale production of boron isotope is mainly chemical exchange distillation.
WANG Yanbo;SUN Wang;PAN Jianxiong;ZHOU Mingsheng
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H3+ in diffuse interstellar gas [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 A model is constructed of the material in front of the star Cygnus OB2 no. 12 in which dense cores are embedded in diffuse clumps of gas. The model reproduces the measured abundances of C2 and CO, and predicts a column density of 9×1010 cm−2 for HCO+.
Cecchi-Pestellini, C. +1 more
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Optimization of gas chamber design of mine-used catalytic methane sensor based on CFD
Meikuang Anquan, 2021 In order to optimize the response speed of the catalytic methane sensor used in mine, the flow field and methane diffusion characteristics inside the sensor chamber were simulated and analyzed by computational fluid dynamics (CFD).
GU Renyong, JIANG Ze
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Gas Steady-state Diffusion in Fractal Porous Media [PDF]
E3S Web of Conferences, 2021 Gas diffusion in fractal pores does not follow the classic Fick’s and Knudsen’s laws, so more research on gas diffusion in fractal porous media is needed. Fractal pore models are generated using the random walk method.
Zhehua Du
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Diffusion and correlations in lattice-gas automata [PDF]
Physical Review E, 1997 9 pages (revtex source), 12 Postscript ...
Hanon, D., Boon, Jean-Pierre
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Determination of initial velocity of gas diffusion under temperature control
Frontiers in Earth Science, 2023 Introduction: The initial velocity of gas diffusion (ΔP) of coal is an important index to characterize the outburst risk of coal, and temperature is an important factor affecting the determination of initial velocity of gas diffusion.
Xianguang Shang +8 more
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Membranes, 2020 This study presents a simple flow-based system for the determination of the preservative agent sulfite in food and beverages. The standard method of conversion of sulfite ions into SO2 gas by acidification is employed to separate the sulfite from sample ...
Aulia Ayuning Tyas +4 more
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Lattice Boltzmann modeling of two component gas diffusion in solid oxide fuel cell [PDF]
Hydrogen, Fuel Cell & Energy Storage, 2015 In recent years, the need for high efficiency and low emission power generation systems has made much attention to the use of fuel cell technology. The solid oxide fuel cells due to their high operating temperature (800 ℃ -1000 ℃) are suitable for power ...
mohammadreza shahnazari, khavar fazeli
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