permeability

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permeability

The measure of a material's ability to transmit liquids.The passage of soil contaminants into groundwater increases as soil permeability increases.On the other hand,in situ remediation—removal or decomposition—of groundwater contamination is easier as permeability increases.For a color map of the United States showing the relative permeability of soils across the country, see the Web site page of the Environmental Protection Agency at www.epa.gov/iwi/1999sept/iv20_usmap.html.

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The decrease in the relative gas permeabilities of the TX70A and TX70B blends with increasing DCP content was attributed to two aspects.
Tailoring morphology to improve the gas-barrier properties of thermoplastic polyurethane/ethylene-vinyl alcohol blends
Table 3 shows the ratios of the experimental permeabilities toward both gases for the formulated paints.
Characterization of a water-based paint for corrosion protection
The relationship between saturated hydraulic conductivities and air permeabilities obtained in situ, with exhumed samples tested on site and in the laboratory, has also been examined for soils of various textures (Loll et al.
The indirect estimation of saturated hydraulic conductivity of soils, using measurements of gas permeability. I. laboratory testing with dry granular soils
The hyaloclastites have generally higher porosities and permeabilities than the basaltic lavas and intrusions.
Porosity structure of Icelandic basalt/Islandi basaltide poorsus
Areas of the mold cavity closest to the squeeze head of a high pressure molding machine will see lower permeabilities than other areas because the sand is more closely compacted in that area as compared to other parts of the mold.
Mold venting: a return to the basics
In contrast, deck sections 5 (sprayed) had average permeabilities of 1,397 and 1,977 coulombs for the 0- to 51-mm (0- to 2-in) and 51- to 102-mm (2- to 4-in) sections, respectively.
Testing of a concrete sealer using the rapid chloride permeability technique
Table 2 contains some polymer permeabilities towards carbon dioxide.
Determining the carbon dioxide permeability of paint films
Also, much higher steady state permeabilities were observed than predicted by the Maxwell model.
Mixed matrix membrane materials with glassy polymers. Part 1
The foamed plaster process or permeable metalcasting plaster, has been designed to produce mold permeabilities comparable to those obtained in the Antioch process, but without the autoclaving cycle.
Wealth of molding methods meet every casting need
This new software, Absorption Systems Caco-2 Permeability Module, will supplement the permeability model now in QMPRPlus(TM), which is based on a database of about 50 measurements of permeability in human and rat, to enable pharmaceutical companies to estimate permeabilities for very large numbers of compounds in the computer, rather than through laboratory experiments that are very costly and time-consuming.
Simulations Plus Licenses Permeability Data From Absorption Systems to Develop Unprecedented Drug Permeability Correlation Model
The apparatus developed allows for the quick determination of paint film permeabilities, not only because the conductivity values are acquired each second using a computer, but also due to the permeation cell design, which uses a minimal lower chamber volume and thus a maximum sensitivity.
Permeability of paint films towards chloride ion

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