depletion


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depletion

[də′plē·shən]
(ecology)
Using a resource, such as water or timber, faster than it is replenished.
(electronics)
Reduction of the charge-carrier density in a semiconductor below the normal value for a given temperature and doping level.
(nucleonics)
The percentage reduction in the quantity of fissionable atoms in the fuel assemblies or fuel mixture that occurs during operation of a nuclear reactor.

depletion

see ENVIRONMENTAL DEPLETION.
References in periodicals archive ?
Past studies have used statistical analyses of changes in the ozone hole's size to argue that ozone depletion is decreasing.
Officials of Sindh said that there are number of issues but climate change is one of bigger issues causing depletion of fish stock.
LTHE said these projects are being implemented by PDO in order to overcome pressure depletion and maintain potential in order to sustain production.
Because Alzheimer's disease is associated with similar neuronal and cognitive problems, the scientists wondered whether the problems might be mediated by depletion of BRCA1.
However, in the 1980s, scientists found that the ozone layer above the South Pole was showing signs of severe depletion, primarily because of the presence of high levels ofAaAaAeAeAaAeAeA chemically active forms of chlo and bromineAaAaAeAeAaAeAeA released by man-made compounds like (http://www.
A randomized trial of iron depletion in patients with nonalcoholic fatty liver disease and hyperferritinemia.
The first NEB's product based on this technology is the NEBNext rRNA Depletion Kit (Human/Mouse/Rat), which is highly effective for FFPE RNA samples and high-quality RNA samples.
The results also indicated that during the past 20 years, climate change has played a role in the Baltic's oxygen depletion.
Depletion of oil resources is also cause of unemployment in most of the economies of world.
Larsen and Toubro Limited (L&T) has won a contract valued at $232 million to execute Phase 2 of the Saih Rawl Depletion Compression (SRDC2) project on behalf of Petroleum Development Oman (PDO).
In truth, unlike the billions in true subsidies being given out annually to ethanol, wind, algae, and solar projects, oil companies get an annual tax adjustment known as a depletion allowance.
In a private letter ruling released January 14, 2011, the IRS allowed a bulk sale exception to the retailer exclusion, allowing an oil and gas company to claim percentage depletion.