Results 211 to 220 of about 177,198 (268)
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Gas Diffusion in the Middle Ear
Acta Oto-Laryngologica, 1991The ex vacuo theory, claiming that in cases of middle ear underaeration air enters the middle ear through the Eustachian tube in diminished amounts while oxygen continues to leave it into the blood by diffusion as in normal condition, does not provide a complete explanation for the aeration problems encountered in middle ear pathology. This study shows
J, Sadé, M, Luntz
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Gas diffusion on graphene surfaces
Physical Chemistry Chemical Physics, 2017Gas diffusion on graphene surfaces is a two-dimensional gas behavior, controlled not by the hopping mechanism but by molecular collisions.
Chengzhen, Sun, Bofeng, Bai
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Diffusion in a periodic Lorentz gas
Journal of Statistical Physics, 1987zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Moran, Bill +2 more
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A Gas-Hemoglobin Diffusion Photometer
IRE Transactions on Medical Electronics, 1960A double-beam photometer is described which employs a single photocell and motor-driven shutter synchronized with alternately energized screens in a gated amplifier. The equipment is used for indicating and recording monochromatic light absorption changes by a thin layer of hemoglobin-containing media exposed to diffusion of various gases.
F, KREUZER, L, GARCEAU
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Diffusion in a Periodic Lorentz Gas
Physical Review Letters, 1983Summary: Self-diffusion in a Lorentz gas on a triangular lattice is studied both analytically and numerically. A simple estimate for the diffusion coefficient, based on the idea of a random walk between traps, is found to be in good agreement with the numerical results.
Machta, Jonathan, Zwanzig, Robert
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Determination of Diffusion Coefficients by Gas Chromatography
ChemInform, 2004AbstractFor Abstract see ChemInform Abstract in Full Text.
George, Karaiskakis, Dimitrios, Gavril
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Diffusion Imaging with Hyperpolarized3He Gas
Journal of Magnetic Resonance, 1997We used MRI of hyperpolarized 3He to demonstrate some novel aspects of gas diffusion. Two different techniques were used. First, a slice was burned into a one-dimensional image by inverting the spins in the slice and diffusion was studied by measuring the magnetization as it filled the depleted slice.
, Schmidt +4 more
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Science, 1959
A method has been proposed for deriving a characteristic determining flow in porous systems. This characteristic combines both area and path-length factors used by earlier authors. For a gas, diffusive flow is proportional to the 4/3 power of the gas-filled porosity, and this function has been derived from consideration of the planar distribution of ...
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A method has been proposed for deriving a characteristic determining flow in porous systems. This characteristic combines both area and path-length factors used by earlier authors. For a gas, diffusive flow is proportional to the 4/3 power of the gas-filled porosity, and this function has been derived from consideration of the planar distribution of ...
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2002
In general, the diffusion velocities of gas mixtures in porous media are related to each other in a complex manner dependent upon the mole fraction of each gas, the molar fluxes of each gas, and the binary diffusion coefficient of each gas pair. Soil-type effects on gas diffusivity in sieved and repacked soils appear to be minor and can probably be ...
Rolston, D. E., Møldrup, Per
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In general, the diffusion velocities of gas mixtures in porous media are related to each other in a complex manner dependent upon the mole fraction of each gas, the molar fluxes of each gas, and the binary diffusion coefficient of each gas pair. Soil-type effects on gas diffusivity in sieved and repacked soils appear to be minor and can probably be ...
Rolston, D. E., Møldrup, Per
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Current Opinion in Electrochemistry, 2017
Summary Currently, bioelectrocatalytic devices such as biofuel cells and bioreactors are recognized as new environment-friendly devices for the production of electricity and valuable products. Thus far, systems have been improved from the viewpoints of enzymes and electrodes.
Keisei So, Kento Sakai, Kenji Kano
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Summary Currently, bioelectrocatalytic devices such as biofuel cells and bioreactors are recognized as new environment-friendly devices for the production of electricity and valuable products. Thus far, systems have been improved from the viewpoints of enzymes and electrodes.
Keisei So, Kento Sakai, Kenji Kano
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