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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Spiritual masters write of the permeable soul being able to not only receive but to give, with the energy mutually going both ways.
Topmix Permeable is not recommended for use in areas which are going to be used for activities such as stockpiling sawdust or in areas where there will be heavy silt loads such as large recycling centers, but is suitable for most other applications.
14] made a detailed study on the Bingham fluid flow in an inclined channel bounded by two permeable beds.
David Hein is a principal pavement engineer and VP of transportation with Applied Research Associates and is the current chair of the new ASCE T&DI Permeable Pavement Structural Design Committee.
HELPING: A driveway built using permeable materials from Huddersfield building products firm Marshalls: AWASH: A car ploughs through last summer's flooding at New Mill
Employ rooftop gardens and permeable paving systems to manage stormwater.
Permeable pavements come in a wide variety of materials and prices, requiring different amounts of maintenance.
The parking lot will be covered in permeable concrete, which allows rain and storm water to seep into the ground and replenish the aquifer, Landregan said.
Jim Cummings, a technical expert in the Technology and Markets Program of the Technology Innovation Office, says electrical heating is particularly suited to sites with clay soils, which are not very permeable but have a higher water content than other soils and thus conduct electricity more effectively.
One method is to use permeable pavement, which can help reduce the impacts of urbanization on receiving waters.
These are major concerns in industrial facilities with permeable insulation such as phenolic, calcium silicate and perlite on steam lines, because the insulation can become wet and remain wet as the result of leaky or broken valves and fittings, rain storms or high humidity.
Since vacuum is drawn throughout all vertical and horizontal surfaces of the permeable mold, the porous metal can help pull vacuum in the belly of deep-draw molds, where it can be difficult to install traditional vacuum lines.