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 ?
F] of the fillers in the system belongs to the percolating network, whereas the remaining rods [V.
Currently, water found underground is presumed to be percolating groundwater unless proven otherwise.
Instead, the evidence strongly supports the idea that the near-surface mineral deposits resulted from percolating rainwater, which carried soil minerals down into rock fractures.
You've got to look at what's percolating on the international scene at all times,'' Spring said.
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.
25 SCIENCE, Stuckless and his colleagues described numerous test results indicating the Trenth 14 deposits formed from rainwater percolating down through the soil, rather than from floods of upwelling fluids.
Once investigators determine whether the pollution is percolating into the water or being washed into the water, one of three remediation techniques will be selected.
Three sources of water bogged down the area, Ammerman notes: spring water percolating through the soil, runoff from nearby hills after rain and periodic flooding from the Tiber River just to the west.
Fresh water percolating through the ground also helped create the caves.
Groundwater percolating down the limestone may have leached out the mineral gypsum, weakening the limestones and causing the collapse of a basin about one-third the size of the present Everglades.
Now the controversy over how coffee is brewed and whether it affects cholesterol levels is percolating again.
He also gets the ultimate kinky romance going between Montoya and Katrina amid all the carnage and mad machismo, as well as an interesting, blood-brotherly dynamic percolating among the three main guys.