half-life [haf´līf″] the time required for the decay of half of a sample of particles of a radionuclide or elementary particle; see alsoradioactivity. Symbolt½orT½. Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders...
Pharmacology activity manner and the constituent in order to augment the serum half-life of medicineCompositions and methods are provided for increasing the serum half-life of a pharmacologically active agent. The novel compositions are covalent conjugates of the selected pharmacologically active agent ...
half-life n 1.(General Physics) the time taken for half of the atoms in a radioactive material to undergo decay. Symbol:τ 2.(Biology) the time required for half of a quantity of radioactive material absorbed by a living tissue or organism to be naturally eliminated (biological half-life...
The half-life of a drug is the time it takes for the blood or plasma concentration of a given drug to be reduced by 50%. The formula for calculating this value is:t1/2= 0.693·Vss/CL This pharmacokinetic value is also important for determining the time to steady state concentrations in...
Enter a half life and one or more doses to see the concentration over time using exponential decay ... Note this is only a simple mathematical model and medicines can be very
The half-life of a drug may influence or dictate the daily dosage regimen of a particular agent and also the amount of time needed to achieve a needed and consistent response for efficacy; and a medication’s (or drug of abuse) half-life may also provide an indication... This is a ...
biological half-life T1/2 Biology The time required for 1⁄2 of the total amount of a particular substance in a biologic system to be degraded by biological processes when the rate of removal is nearly exponential Radiation physics The length of time required for1/2 of a radioactive substan...
If it's not there, it may mean the FDA has not studied the medicine to determine if it can be safely split.Check with your pharmacist if you are not sure.Pills or tablets that can be cut in half typically have a scored mark down the middle of the pill with a line or indentation....
半衰期 half-life, half life period 常用俚语 how the other half lives 另一半人的生活如何(指另一半是穷人或富人) Now I am beginning to understand how the other half lives. 如今我正在开始了解另外一半人的生活如何。 half under 处于半昏迷状态的,不省人事的 I was half under and could hear what...
biology and medicineblood circulationblood pressuredietdiseaseshalf-lifemanmetabolismsodiumsodium 22IN the treatment of hypertension, the effectiveness of sodium depletion by either dietary restriction or natriuretic agents is now fully documented. It is sufficient to say that the response to such treatment...