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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

percolation

The downward movement of water into soil.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Inorganic N loadings (quantity leached) in runoff and percolate were calculated from each replication.
Percolate is recognized for its fresh, modern look and simplicity; flexible tagging system to assign people and courses in any manner; and capacity to create tests and reports that include both knowledge and certainty to identify high-risk gaps in training and boost learner confidence.
"Percolate isn't just any system - it's one that jolts you with a modern user interface and features that would 'Wow' any small business looking for a platform that delivers," Craig Weiss said when contacting Michaels & Associates about Percolate's latest ranking in the report.
Based in New York with additional offices in London and San Francisco, Percolate has some 100 staff, offering an end-to-end suite of web-based and mobile tools that allow brands, agencies and other external partners to work within a single platform.
Percolate's new Discussions feature benefits and supports learning by allowing course facilitators to:
Scottsdale, AZ, January 23, 2014 --(PR.com)-- Michaels & Associates received high honors this week for their Percolate LMS‒now globally recognized as one of the top learning management systems (LMSs) according to the 2014 State of the LMS Industry Report authored by Craig Weiss of E-Learning 24/7.
When the eyelid is closed, scintillating pin-pricks of light percolate through the lenses, creating magical luminous patterns and effects.
In fact, this question had begun to percolate earlier that day, when a string of malfunctions conspired to temporarily erase the exhibition from its sites at Bear Mountain just as I arrived.
Scottsdale, AZ, October 23, 2013 --(PR.com)-- Michaels & Associates announced news of the latest Percolate LMS[TM], housing a more robust Quiz Builder tool that easily captures learners' certainty using a new feature called Learner Certainty Assessment (LCA).
Scottsdale, AZ, February 13, 2013 --(PR.com)-- Michaels & Associates recently launched another release of the Percolate LMS[TM] that makes building a simple quiz and survey a “no-brainer.”
The most compelling aspect of the work by Yen's group is its simplicity, he says, adding that he'd like to know how far the superoxides could percolate through Mars' surface.
Scottsdale, AZ, January 08, 2013 --(PR.com)-- Michaels & Associates announces the release of two new features of the Percolate LMS[TM] that take advantage of its powerful tagging system: self-registration and communication.