What meaning of half-life ~ Half-life is defined as the time period that must elapse in order to halve the initial number of radioactive atoms. A half-life of 12-48 h is generally ideal for once daily dosing of oral drugs. Indeed lately is being hunted by users around us, perhaps one of you. People are now accustomed to using the net in gadgets to see video and image data for inspiration, and according to the title of this post I will talk about about What Meaning Of Half-life Drug half-life has important implications for dosing regimen and peak-to-trough ratio at the steady state.
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Half-life in the context of medical science typically refers to the elimination half-life. Half-Life The half-life of a radioactive substance is a characteristic constant. Your What meaning of half-life image are ready in this website. What meaning of half-life are a topic that is being hunted for and liked by netizens today. You can Find and Download or bookmark the What meaning of half-life files here
What meaning of half-life - The small lead-shielded canisters contain pellets or a fine powder of caesium 137 which emits powerful gamma radiation with a half-life of 30 years. It means the more the drug is distributed in the body the more the half-life is. The time required for half of the atoms of a radioactive substance to become disintegrated. Hastened the period of time of his recovery.
So if you take ambien after 2 hours the plasma concentration will be reduced to half. Different substances do this at different rates. Half-life the time required for half of the mass of a radioactive substance to disintegrate. For a given reaction the half life t12 of a reactant is the time required for its concentration to reach a value that is the arithmetic mean of its initial and final equilibrium value.
The length of time needed for the radioactivity of a radioactive substance to be reduced by half. The half-life is directly proportional to the volume of drug distribution. The definition of elimination half-life is the length of time required for the concentration of a particular substance typically a drug to decrease to. The remainder will decay further over future half-life periods.
Half-life definition the time required for one half the atoms of a given amount of a radioactive substance to disintegrate. Half-life is used to estimate how long it takes for a drug to be removed from your body. For example the half-life of a radioactive substance is the amount of time it takes for half of its atoms to decay and the half-life of a drug is the amount of time it takes before half. The half-life of Ambien is about 2 hours.
The half-life and the decay constant are inversely proportional because rapidly decaying radioisotopes have a. Medical Definition of half-life. The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value. In science a half-life also as a noun spelled half life is the amount of time it takes for half of a substance or entity to undergo some specified process.
If the half-life is too short it may require more frequent dosing in order to maintain desired exposures and avoi. What Is a Half-Life. 1 The time taken for the radioactivity of a specified isotope to fall to half its original value. A time period of 30 years.
Tritium is radioactive with a half-life of 1226 years. Some types of atoms do a really weird thingthey spontaneously decay into other types of atoms. The half-life is therefore an inverted exponential measure of activity meaning that the most active isotopes have the shortest half-lives. Definition for Half-Life The time it takes for one-half of the atoms of an unstable element or nuclide to decay radioactively into another element or nuclide.
Some do it very quickly and half of the unstable nuclei decay in less than one second. COBUILD Advanced English Dictionary. For example the half-life of 14 C is 5700 years. Some do it very slowly and half of the unstable nuclei take.
It measures the time it takes for a given amount of the substance to become reduced by half as a consequence of decay and therefore the emission of radiation. The half-life of an isotope represents the time taken for half of a quantity of an isotope to decay. Half-life - the time required for something to fall to half its initial value in particular the time for half the atoms in a radioactive substance to disintegrate half life period period of time time period - an amount of time. In a medical context half-life explicitly describes the time it takes for the blood plasma concentration of a substance to halve plasma half-life its steady-state when circulating in the full blood of an organism.
The half-life is inversely proportional to clearance which indicates that the more the drug clearance from the body the less the half-life is. Copyright HarperCollins Publishers. The time required for half of something to undergo a process. The half-life of a radioactive substance is the amount of time that it takes to lose half its radioactivity.
Half-life is a measure of the time taken for the unstable nuclei to change into stable nuclei. For example lithium-8 has a half-life of only 085 seconds.
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