LYCOS RETRIEVER 
Isotope
built 654 days ago
Isotope analysis is the determination of isotopic signature, the relative abundances of isotopes of a given element in a particular sample. For biogenic substances in particular, significant variations of isotopes of C, N and O can occur. Analysis of such variations has a wide range of applications, such as the detection of adulteration of food products.[4] The identification of certain meteorites as having originated on Mars is based in part upon the isotopic signature of trace gases contained in them.[5]
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The morejazzthanrock fusion band Isotope may have not had the longest career, but they played an integral part in the Canterbury Scene with some of its key players spending time in the band. Guitarist Gary Boyle had been playing in Dusty Springfield's band for a couple of years before he caught the prog rock bug. He got it while playing in Brian Auger the Trinity and afterward decided to go back to school to further his musical studies.
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How is an Isotope or Nuclear Stress Test performed? The test is actually divided into three parts: A treadmill stress test, imaging at rest, and imaging after exercise. There are two common types of isotope used in the USA. They are thallium and technetium (which are marketed under the Trade names "Cardiolite" and "Myoview"). Some laboratories use a "dual isotope" technique, where thallium is used for the resting images and technetium is used for the stress pictures. Depending upon the isotope and protocol for the laboratory, resting images may be obtained either before stress or two to four hours after stress.
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The Isotope and Cheshire Cats are designed by Frank Meldau, built by IFG and can be rigged, sailed and righted by one person. These are some of the fastest and most exciting racing sailboats on the water today. You will not find a more exciting sailing experience than the Isotope and Chesire Catamarans.
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Cotara is an experimental new treatment for brain cancer that links a radioactive substance designed for medical uses — a radioactive isotope — to a targeted monoclonal antibody. This monoclonal antibody is designed to bind to a type of
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Biological processes are generally unidirectional and are excellent examples of "kinetic" isotope reactions. Organisms preferentially use the lighter isotopic species because of the lower energy "costs", resulting in significant fractionations between the substrate (heavier) and the biologically mediated product (lighter). The magnitude of the fractionation depends on the reaction pathway utilized and the relative energies of the bonds being severed and formed by the reaction. In general, slower reaction steps show greater isotopic fractionation than faster steps because the organism has time to be more selective. Kinetic reactions can result in fractionations very different from, and typically larger than, the equivalent equilibrium reaction.
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