depletion


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Related to depletion: amortization, Depletion region, Resource depletion

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 ?
613A(d) (2), which provides two exceptions to the retailer exclusion from percentage depletion, both of which applied to the taxpayer.
We assessed column reproducibility by use of 1-way AMOVA (JMP; SAS Institute), examining the runs as the factor of interest to determine the cutoff where albumin depletion efficiency remained >90%.
Ten of these replicates were used as depletion analysis and 10 for performance evaluation.
Their studies also included techniques to determine whether depletion of RLIP76 would cause cancer-specific apoptosis.
Once glycogen depletion occurs, exercise intensity reduces dramatically and the pain, cramping, and sluggishness associated with the Wall take hold.
Racial and ethnic minorities are less healthy and less wealthy than whites, raising a very important, unanswered research question: Do health problems accelerate depletion of wealth differently for racial and ethnic minorities compared to white elders?
But before all the bauxite and iron ore is gone from the ground or all the trees have been cleared from the forests, a different type of resource depletion may spur more recycling.
Doctor Colin Campbell of the London-based Oil Depletion Analysis Center says the global peak could be in 2010.
Powerdown: Options And Actions For A Post-Carbon World by energy resource expert Richard Heinberg (Core Faculty, New College of California) addresses the rapidly impending problems of energy resource depletion and increasing population pressures for an expanding energy resource consumption.
Theratechnologies (TSX: TH), Montreal, has announced preliminary results for a Phase II study testing ThGRF, its growth hormone-releasing factor analogue, in patients suffering from chronic wasting, or muscle depletion, secondary to chronic obstructive pulmonary disease (COPD).
Blending of resin and scavenger is done immediately prior to blow molding to minimize depletion of the scavenger's potency.
Two of these methods require a fixed amount that must be distributed and could result in the premature depletion of the taxpayer's account in the event that the value of the assets in that account declines.