effective half-life

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effective half-life

See half-life.

effective half-life (ehl),

the time required for a radioactive element in an animal body to be diminished by 50% as a result of radioactive decay and biologic elimination. The effective half-life is equal to the product of the biologic half-life (bhl) and the radioactive half-life (rhl) divided by the sum of the bhl and the rhl: ehl |m= (bhl × rhl)/(bhl + rhl). See also biologic half-life.

effective half-life,

n See life, radioactive.

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biologic half-life ehl half-life			For example, low doses of vitamin C are retained in the body and have an effective half-life of somewhere between eight and forty days. The Case for Ascorbate by Harun, Adrianne / Townsend Letter In the liver, chemicals can be secreted into the bile and transported into the gut, where they are reabsorbed into the portal blood, thereby increasing the effective half-life for systemic clearance. Issues in the pharmacokinetics of trichloroethylene and its ... by Evans, Marina V. / Environmental Health Perspectives These extend to efficacy and safety, but also to important issues in drug development such as stabilization and the extension of effective half-life without affecting bioactivity," said Mr. Flamel Technologies Announces Appointment of Jeffery S. Vick as Chief ... by Business Wire			EEE EEG EEJ eel eelworm EENT EEOC EF ef- EF-4 EFA efalizumab EFAs Efasedan efavirenz EFF effacement effect effect modification effective effective atomic number effective compliance effective conjugate effective dose effective dose equivalent limit effective half-life effective osmotic pressure effective radiating area effective refractory period effective renal blood flow effective renal plasma flow effective reproductive ratio effective temperature effectiveness effector effector cell effeminate effemination efferent efferent duct efferent glomerular arteriole efferent nerve Efferent nerves efferent neuron efferent pathway efferent pupillary defect efferent vessel effervesce effervescence effervescent effervescent salt			Effective focal length Effective focal length Effective focal length Effective focal length effective focal spot effective focal spot effective focal spot effective focal spot effective focus effective focus effective focus effective focus effective force Effective founder population Effective founder population effective fragment Effective Free Euclidean Distance Effective Fringe Benefits Effective Full Charge Effective Full Time Employee Effective Full-Power Day Effective Full-Power Hours Effective Full-Power Years Effective Grinding Length Effective Gross Income Effective Gross Income Effective Gross Income Multiplier Effective Group Identifier effective gun bore line effective gust velocity effective half-life Effective Health Care Effective Health Care Alliance Programme Effective Heat Strain Index Effective Hedging Effective height Effective Height Above Average Terrain effective help Effective Hepatic Blood Flow Effective Hit Point Effective Holding Strength of Device effective horizon Effective Horsepower Effective Horsepower Effective Impedance Effective Incident Radiated Power Effective Increased Attack Speed Effective Index Method Effective Inertia Effective Input Noise Effective input noise temperature effective instruction Effective Instructional Leadership Act Effective Instructions Per Cycle Effective Interest Effective Interest Method

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