The grinding of granular activated carbon particles which results in carbon fines generation and loss of mean particle diameter of the carbon granule
Loss of subjects from the defined sample during the course of a longitudinal study
A natural reduction in work force as a result of resignations, retirements or death Most unionized companies cannot unilaterally reduce their employment levels to cut costs, so management must rely on attrition to provide openings that they, in turn, do not fill Because the median ages of work forces at the integrated mills may be more than 50, an increasing number of retirements may provide these companies with added flexibility to improve their competitiveness
the act of rubbing together; wearing something down by friction a wearing down to weaken or destroy; "a war of attrition" sorrow for sin arising from fear of damnation
The process in which solids are worn down or ground down by friction, often between particles of the same material Filter media and ion exchange materials are subject to attrition during backwashing, regeneration, and service
a gradual reduction in work force without the firing of personnel, as when workers resign or retire and are not replaced
The loss of subjects during the course of a study This may be a threat to the validity of conclusions if participants of study and comparison/control groups drop out at different rates or for different reasons For example, if treatment participants fail to appear for treatment and are subsequently excluded from the follow-up, the treatment and control subjects remaining may not be "comparable" due to attrition Topic areas: Accountability and Evaluation
The act of rubbing together; friction; the act of wearing by friction, or by rubbing substances together; abrasion
the act of rubbing together; wearing something down by friction a wearing down to weaken or destroy; "a war of attrition"
Used in the banking industry to describe when your customers leave you to avail of the services of another bank The more commoditised products become the more frequently the process takes place In the telecommunications industry the same process is called Churn
– A reduction in the number of rooms guaranteed by the group that is greater than the contracted percentage of drop off determined by the hotel at the time of booking You will be charged for each unused room per night at the contracted group rate
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