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Study problems 1. Single dose and steady-state multiple dose plasma concentration-vs.-time profiles of tolrestat, an aldose reductase inhibitor, were compared. The terminal exponential-phase half-life was 31.6h at the conclusion of multiple dose therapy administered at a 12-h dosing interval. Ho...
For a given reaction the half-life, t1/2, 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 biological half-life of a molecule is described as ‘the time required to lose half of the pharmacologic/physiologic activity of the molecule in the in vivo system’. From: Toxicology Letters, 2012 About this pageAdd to MendeleySet alert ...
Chapter 11: Nuclear Chemistry Search for: 11.2 Half-LifeLearning Objectives Define half-life. Determine the amount of radioactive substance remaining after a given number of half-lives. Whether or not a given isotope is radioactive is a characteristic of that particular isotope. Some isotopes are...
What is the general formula for half-life? In most problems, the half-life of a radioactive element is given to you. If you are given a problem where you are told how many half-lives have elapsed as well as how much time has passed, you can solve for the length of a half-life...
Half-life time (T) Total time (t) Remaining quantity (N(t)) Decay constant (λ) Mean lifetime (τ) Share resultReload calculator Check out 8 similar physical chemistry calculators 🥼 Diffusion coefficientGraham's law of diffusionLangmuir isotherm...5 moreCalculator...
Learn how to identify half-life given the rate constant, and see examples that walk through sample problems step-by-step for you to improve your chemistry knowledge and skills.
Unstable nuclei decay. However, some nuclides decay faster than others. For example, radium and polonium, discovered by the Curies, decay faster than uranium. This means they have shorter lifetimes, producing a greater rate of decay. In this section we explore half-life and activity, the quanti...
analysisofdisciplinehalf-lifechemistryinchinabasedonbibliometrics 系统标签: 半衰期学科计量学文献bibliometricschemistry 2014年第4期 1引言 为了揭示某篇文献的贡献随时间变化 规律,半衰 期这一概念最早是由J.D.Bernal从自然科学领域引入到 图书情报学科中,经过若干年的不断研究和发展 产生了 文献 衰期、期刊 衰期...