Percolation

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percolation

[pər·kə′lā·shən]
(computer science)
The transfer of needed data back from secondary storage devices to main storage.
(hydrology)
Gravity flow of groundwater through the pore spaces in rock or soil.
(mining engineering)
Gentle movement of a solvent through an ore bed in order to extract a mineral.
(science and technology)
Slow movement of a liquid through a porous material.

Percolation

 

a method used to leach ores in a fixed bed, mainly, copper oxides and gold ores; leaching by this method is called percolation leaching. The process is carried out in a percolator tank. The pulverized ore is uniformly loaded onto the tank’s false bottom, which is a filtering device. The leaching solution is introduced either from beneath the false bottom, a process called upward leaching, or onto the surface of the load, a process called downward leaching; accordingly, the solution is collected either above or below the false bottom.

percolation

The downward movement of water into soil.
References in periodicals archive ?
2a and b, we define 1 - [gamma] the volume fraction of the percolating phase and [gamma][empty set] the volume fraction of the dispersed phase.
7) The fraction given by Fire Duration divided by Percolating Population.
There's a lot of early-twentieth-century culture percolating through Dzama's fertile imagination: comic books, serial Westerns, Surrealism, psychoanalysis.
Paces and his colleagues contend that the crusts grew from rainwater percolating down through the mountain, rather than from upwelling hot fluids.
Cold air percolating through every fourth panel of the handsomely veneered Micro-floor rises to the height of the photographer, calculated at roughly 2m, and is extracted at this height and re-circulated.
You hear that noise on the sound track--the percolating buzz of a crowd, with drinks flowing, talk popping, and dance music jerking you around, all bass and beat.
The bacteria might break down minerals and plant remains originally buried beneath the glacier or subsequently washed in by water percolating through the ice, says Sharp.
Percolating up from Earth's interior, hot, sulfurous water spews forth from seafloor cracks, providing a rich environment for these organisms.
With "Sublime Air Clot," 1993, an installation of ten sculptural wall ensembles that hold various fluids, foods, and gases percolating through a system of laboratory jars, surgical tubes, and beeswax replicas of such objects as basketballs and aortalike heart valves, Rob Craigie achieves a brilliant synthesis of energy and entropy, effectively blurring the distinction between open and closed systems.