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Half-life is trationally employed for the assessment of the degree of accumulation (R) of drug in the body as follows:
R=1/(1-exp(-K*tau)....(1)
This equation applies for single-compartment model drugs. However, for drugs observing multiple compartmental bevavior, the terminal half-life, t0.5(beta), is used. This will, invariable, results in over or under estimation of the drugs' accumulation ration.
As a matter of fact an effective elimination rate constant should, per necessity, take into consideration the exact distributional characteristics of the drug in question. i.e the rate of drug trasfer from one compartment to the other and vis-a-versa.
The following relationship could be of use in this regard:
ERC = (apha*beta)/(K12+k21), where ERC stands for Effective Elimination Rate Constand...
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How do you calculate daughter in half life?
1000 years
Is radioactive decay slow?
Radioactive decay is measured as a half life and it varies enormously. REALLY enormously! The shortest half life is for artificial elements where the half life is a few millionths of a second, the longest is hydrogen which has a half life of far longer than the lifetime of the universe! Uranium has a half life of around 4000 million years; geologists use uranium (and other elements) to calculate the age of rocks based on how much of the uranium has decayed.
If you combine isotope X and isotope Y with half life 1 and 0.45. how do you calculate the half-life combined?
There's no such thing as a half-life combined. The individual isotopes essentially ignore each other. (This is not quite true... if one of them releases neutrons, they could be absorbed by the other one causing it to break apart... but that's a lot more complicated.)
What is the half life of pennium?
I think you are supposed to calculate this yourself from your own observations. How about also trying dimium, quartium, and dollarium. There shouldd be interesting differences.
What is an isotope that the time it takes it to decay to half its original mass?
c.half-life
What is the Half life of illicit drugs?
it depends on the drug. the cut, and the form in which it is administered. YOU WILL NOT KNOW WHAT THE HALF LIFE IS UNLESS YOU KNOW HOW MUCH YOU HAVE TAKEN. REFER TO HALF LIFE OF MEDICATION IF YOU KNOW THE DOSE TAKEN. HALF LIVES OF DRUGS DIFFER.
Why is radioactive decay measured in half lifes?
The half-life forms a type of clock used to calculate time passed.
What year judy garland take drugs?
half of her life
How do you calculate daughter in half life?
1000 years
What kinds of drugs cannot be formulated into a sustained release dosage form?
Usually, drugs with these properties should not be formulated into a sustained release dosage form: - Drugs with a half life shorter than 2 hours - Drugs with a half life longer than 5 hours - Drugs with a short half life but a long duration of action - Drugs which have a poor absorption - Drugs with a narrow therapeutic index - Drugs weighing more than 1g - Drugs with a solubility lower than 0.1mg/mL - Drugs with a very low partition coefficient
Why is half life a radioisotope important for radioactive dating?
the half life forms a type of clock used to calculate time passed
How far back does the swab detect drugs?
This will depend on what drug. Some drugs have a very short half-life and others stay in your system much longer.
How does the half life of a drug affect withdrawal?
drugs get metabolised (broken down) at different rates. Some drugs are metabolised quickly, therefore have shorter half lives and more frequent dosing to maintain optimal levels. some drugs take longer and need less dosing. Other things can also affect half lives
What is the formula to calculate the half-life of math?
It is infinite, since mathematical knowledge is not destroyed with the passage of time.
How do you calculate shelf life of drugs?
refer physical pharmacy book by martin or cvs subrymanam.
What is bigger 2 and a half or 6 and a half?
are you on drugs !!
How long does klonopan show up in a drug test?
Longer than most drugs in that class. Example, Xanax has a half life of 18 hours. Klonopan has a half life of up to 50+ hours. When you get to half, then the other half takes the same amount of time to reduce that half, so you can see where I'm going.
