biological decay

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• Biological imaging — may refer to any imaging technique used in biology.Typical examples include: * Bioluminescence imaging, a technique for studying laboratory animals using luminescent protein * Calcium imaging, determining the calcium status of a tissue using… …   Wikipedia

• Decay-accelerating factor — CD55 molecule, decay accelerating factor for complement (Cromer blood group) PDB rendering based on 1h03 …   Wikipedia

• Alpha decay — 2 less. For example:(The second form is preferred because the first form appears electrically unbalanced. Fundamentally, the recoiling nucleus is very quickly stripped of two electrons to neutralize the ionized helium cation.)An alpha particle is …   Wikipedia

• Radioactive decay — For particle decay in a more general context, see Particle decay. For more information on hazards of various kinds of radiation from decay, see Ionizing radiation. Radioactive redirects here. For other uses, see Radioactive (disambiguation).… …   Wikipedia

• Exponential decay — A quantity undergoing exponential decay. Larger decay constants make the quantity vanish much more rapidly. This plot shows decay for decay constants of 25, 5, 1, 1/5, and 1/25 for x from 0 to 5. A quantity is said to be subject to exponential… …   Wikipedia

• Radiative transfer equation and diffusion theory for photon transport in biological tissue — Photon transport in biological tissue can be equivalently modeled numerically with Monte Carlo simulations or analytically by the radiative transfer equation (RTE). However, the RTE is difficult to solve without introducing approximations. A… …   Wikipedia

• Relative biological effectiveness — (RBE) is a health physics concept introduced in the 1950s, after it was noted that different types of radiation might affect living organisms differently. A higher RBE equates with greater biological damage for equivalent radiation exposure.The… …   Wikipedia

• Radioactivity in biological research — Radioactivity can be used in life sciences as a radiolabel to easily visualise components or target molecules in a biological system. Radionuclei are synthesised in particle accelerators and have short half lives, giving them high maximum… …   Wikipedia

• lake — lake1 /layk/, n. 1. a body of fresh or salt water of considerable size, surrounded by land. 2. any similar body or pool of other liquid, as oil. 3. (go) jump in the lake, (used as an exclamation of dismissal or impatience.) [bef. 1000; ME lak(e) …   Universalium

• Lake — /layk/, n. Simon, 1866 1945, U.S. engineer and naval architect. * * * I Relatively large body of slow moving or standing water that occupies an inland basin. Lakes are most abundant in high northern latitudes and in mountain regions, particularly …   Universalium

• Effective half-life — denotes the halving of radioactive material in a living organism by means of radioactive decay and biological excretion. A decay constant is needed to calculate the half life. It is the sum of the biological and physical decay constants, as in… …   Wikipedia