Results 251 to 260 of about 361,980 (305)

Relative Permeability To Gas

Journal of Petroleum Technology, 1950
Abstract A detailed description is given of an experimental method for determiningrelative permeability of porous media to gas. Results are presented for naturaland synthetic cores. The experimental data for two and three phase systems arecompared.
W.J. Leas, J.H. Jenks, Charles D. Russell   +2 more
openaire   +1 more source

Gas Permeability of Microcellular Ceramic Foams

Industrial & Engineering Chemistry Research, 2007
SiOC microcellular ceramic foams were prepared by means of a commercially available preceramic polymer and poly(methyl methacrylate) microbeads acting as a sacrificial filler. Microfoams having cell sizes in the range of 10−150 μm and cell window sizes in the range 10−50 μm were prepared.
BIASETTO, LISA, COLOMBO, PAOLO, INNOCENTINI MDM, MULLENS S.   +3 more
openaire   +1 more source

Gas permeable haptic lenses

Journal of The British Contact Lens Association, 1983
The evolution of contact lenses has seen the development of materials to make lenses that are easier to fit and more comfortable to wear. With this development has come the unfortunate neglect of the haptic lens, and yet this lens is the lens of choice in many cases.
openaire   +1 more source

Gas Permeability of Round Window Membrane

ORL, 1989
The perilymphatic oxygen tension in the scala tympani was measured with a polarographic technique after various gases were insufflated into the middle ear cavity of 7 guinea pigs. Pure oxygen, insufflated into the middle ear cavity, easily permeated the round window membrane and elevated the perilymphatic oxygen tension.
H, Sasa, K, Nagahara, T, Yamashita, T, Kumazawa   +3 more
openaire   +2 more sources

Gas Slippage and Permeability Measurements

Journal of Petroleum Technology, 1956
Introduction Relative permeabilities are factual data necessary to any prediction of reservoir production behavior. One important problem in determining relative permeabilities of porous media to gas is the effect of gas slippage on these determinations.
Robert K. Estes, Paul F. Fulton
openaire   +1 more source

Gas permeability of composite membranes

Journal of Applied Polymer Science, 1986
The permeability of a composite membrane consisting of a homogeneous layer and a porous layer has been derived theoretically by assuming that the permeation through the homogeneous layer obeys Fick's law and that permeation through the porous layer is free molecular flow. The activation energy of the flow is described by three-dimensionless parameters,
Juin-Yih Lai, Sumito Yamada, Kenji Kamide, Sei-Ichi Manabe, Tohru Kawai   +4 more
openaire   +1 more source

Gas permeability of metal powders

Soviet Powder Metallurgy and Metal Ceramics, 1970
1. The gas permeability of powders of the materials investigated shows a tendency to increase with increase in their mean particle size. 2. The gas permeability of mixed powders of different particle sizes does not obey the rule of additivity. 3.
O. A. Katrus, R. L. Oganyan, V. N. Artem'ev   +2 more
openaire   +1 more source

Oxygen permeability and gas permeable contact lens materials

The EYE GLAZ
In this article, we will examine the importance of oxygen permeability (Dk) in gas permeable contact lens materials, and the significance of high Dk in scleral and ortho-k lens designs.
M. Conway, M. Eddleston
openaire   +1 more source

Gas permeability of firebrick structures

Refractories, 1964
The gas permeability of a refractory fireclay structure is ten or a hundred times greater than that of the refractory itself.
openaire   +1 more source

Characterization of gas transport in shale: A multi-mechanism permeability modeling approach

Chemical Engineering Journal, 2022
Jishan Liu
exaly