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Porosity

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porosity [pə′räs·əd·ē]
(physics)
Property of a solid which contains many minute channels or open spaces.
The fraction as a percent of the total volume occupied by these channels or spaces; for example, in petroleum engineering the ratio (expressed in percent) of the void space in a rock to the bulk volume of that rock.
porosity
A ratio, usually expressed as a percentage, of the volume of voids in a material to the total volume of the material, including the voids. The voids permit gases or liquids to pass through the material.
Porosity 

in geology, the aggregate of pores, joints, channels, and other cavities in a rock massif, regardless of their shape and dimensions. The porosity and jointing of rock and other such concepts are distinguished.
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With a simple turn of the unit, the vacuum and flow levels can be changed to overcome porosity and increase or decrease the lifting power.
Adjustable vacuum by Label & Narrow Web
For many potential diecasting applications, the porosity level obtained with the traditional process isn't sufficient to satisfy customer mechanical property requirements.
Semi-solid diecasting produces solid components by Modern Casting
Several of the necessary criteria for a successful exploration well were fulfilled, and with better porosity in the reservoir it would have been a success.
Tethys Oil Announces Results of Tafejjart-1 Well, Onshore Morocco by UMCI News (Potomac Falls, VA)
 
 
 
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