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Topic: Trace radioisotope

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	Radionuclide - Wikipedia, the free encyclopedia
		Trace radionuclides are those that occur in tiny amounts in nature either due to inherent rarity, or to half-lives that are significantly shorter than the age of the Earth.
		Radioisotopes are also a promising method of treatment in hemopoietic forms of tumors, while the success for treatment of a solid tumors has been limited so far.
		Environmentally, radionuclides are used to trace and analyse pollutants, to study the movement of surface water, and to measure water runoffs from rain and snow, as well as the flow rates of streams and rivers.
	en.wikipedia.org /wiki/Radioisotope (933 words)

	Radioactive isotope : Trace radioisotope
		Radioisotopes are unstable radioactive isotopes that either occur naturally or are produced by bombarding small amounts of particular elements with neutrons (usually emitted from a nuclear reactor).
		Environmentally, radioisotopes are used to trace and analyse pollutants, to study the movement of surface water, and to measure water runoffs from rain and snow, as well as the flow rates of streams and rivers.
		Trace radioisotopes are those that occur in minute amounts in nature either due to inherent rarity or to half-lifes that are significantly shorter than the age of the earth.
	www.termsdefined.net /tr/trace-radioisotope.html (613 words)

	Radioisotopes in Industry
		Using tracing techniques, research is conducted with various radioisotopes which occur broadly in the environment, to examine the impact of human activities.
		Trace levels of radioactive fallout from nuclear weapons testing in the 1950s and 60s is now being used to measure soil movement and degradation.
		Some radioisotopes are manufactured in a cyclotron in which protons are introduced to the nucleus resulting in a deficiency of neutrons (proton rich).
	www.uic.com.au /nip27.htm (2252 words)

	ANSTO Brochure. Medical and Industrial Radioisotopes. Page 2 (Site not responding. Last check: 2007-10-21)
		Radioisotope gauging is based on the principle that the radiation emitted from a radioisotope will be reduced in intensity by matter between the radioisotope and a detector.
		Radioisotopes are used as tracers in many research areas.
		Used to trace factory waste causing ocean pollution, and to trace sand movement in river beds and on ocean floors.
	www.ansto.gov.au /ari/brochures_misc/rad2.html (916 words)

	Chapter 6: General Benefits of Radioisotope Research
		Radioisotopes allow investigators to increase the sensitivity for analyzing biological samples, such as tissue and blood components, especially when separating out the material of interest using chemical processes would be difficult.
		Another radioisotope, cobalt 60, has been used successfully to irradiate malignant tumors, but in this case the radioisotope is not administered internally to the patient; rather, the cobalt 60 forms the core of an external irradiator, and the gamma radiation emanating from the radioisotope source is focused on the patient's tumor.
		Recent efforts to utilize radioisotopes in cancer diagnosis and treatment are based on the ability of antibodies to recognize and bind to specific molecules on the surface of cancer cells and the ability of biomedical scientists to custom-design and manufacture antibodies, thus improving their specificity.
	www.eh.doe.gov /ohre/roadmap/achre/chap6_5.html (3689 words)

	Iodine - Wikipedia, the free encyclopedia
		It is required as a trace element for most living organisms.
		One of the halogens, it is an essential trace element; the thyroid hormones, thyroxine and triiodothyronine contain iodine.
		The artificial radioisotope I-131 (a beta emitter), also known as radioiodine which has a half-life of 8.0207 days, has been used in treating cancer and other pathologies of the thyroid glands.
	en.wikipedia.org /wiki/Iodine (1185 words)

	Iron As A Reference Element For Determining
		Major and trace elements occur naturally in the environment at levels which are detectable for most ocean monitoring programs.
		Trace metal contamination was extensive in the Santa Monica Bay where approximately 80% of the sites were contaminated by more than three metals.
		The second accomplishment of this study was that trace metal enrichment was found not only near point sources of pollutant inputs (i.e., treated wastewater outfalls), but was widespread throughout the SCB including some of the presumed reference areas measured previously.
	www.sccwrp.org /regional/ironnorm.save (4099 words)

	Section Eight
		Strong correlation of OH with other trace element abundances have been found in a series of high-pressure garnets from the Colorado Plateau diatremes, which shed light on the substitution mechanism of H in garnet under certain conditions.
		Coherence of water and other trace element abundances is also apparent in oceanic basalts, where literature data indicate a notable difference in H behavior in arc-related lavas compared with MORB and OIB, which may explain the present day distribution of H between hydrosphere and mantle.
		Geochemical problems that are under investigation include the nature of hydrothermal fluid inclusions, toxic metal and radioisotope speciation in contaminated sediments, determinations of the chemical histories of contaminated sites through microanalytical studies of indigenous organisms, and redox chemistry of Mn at the root-soil interface and its role in agriculturally-relevant plant diseases.
	www.er.doe.gov /production/bes/geo/Publications/FY96Summ/sect8.htm (4481 words)

	Chapter 6: Introduction
		First, as their travels within the body are "traced," radioisotopes provide a map of the body's normal metabolic functions.
		Finally, radioisotopes, carried by the body's own processes to abnormal or cancerous cells, can deliver a lethal dose of radiation to those undesirable cells.
		The control of the risk posed by the use of AEC-provided radioisotopes was also a source of intense focus from the outset and remained so as the program grew.
	www.eh.doe.gov /ohre/roadmap/achre/chap6_1.html (676 words)

	Liver Nuclear Medicine Scan \| AHealthyMe.com
		This is accomplished by using different radioisotopes precisely designed to further evaluate a particular case.
		This allows the physician to trace the process of the substance throughout the part of the body that is being tested for disease.
		Depending on the radioisotope and technique used, the scan may identify particular types of tumors or certain cancers.
	www.ahealthyme.com /topic/topic100587093 (670 words)

	Giancoli, Physics : Principles with Applications, 5/E Chapter 30 -- Applications
		By tagging the meat with a trace amount of a radioactive substance, he could find the meat again later, even though it had been ground up and buried in the meatloaf.
		Nuclear Medicine is a medical specialty that works with trace amounts of trace amounts of radioactive materials to investigate the organs' functioning and structure.
		Nuclear medicine traces its history to the discovery of x-rays and of radioactivity in 1898 and to the discovery of so called "artificial" radioactivity in 1934.
	cwx.prenhall.com /giancoli/chapter30/essay2/deluxe-content.html (1152 words)

	National Safety Council Radiation (Site not responding. Last check: 2007-10-21)
		Scientists use radioisotopes to trace and identify the sources of pollution, such as acid rain and greenhouse gases, in air, water, and soil.
		Radioisotopes as a research tool help develop new strains of food crops that are more nutritious, resist disease, and produce higher yields.
		Radioisotope tracers in plant nutrients aid in reducing soil and water pollution by helping researchers to learn how plants absorb fertilizer and how to calculate the optimum amount and frequency of fertilizer applications.
	www.nsc.org /issues/rad/usage.htm (2991 words)

	Trace radioisotope - Wikipedia, the free encyclopedia
		A trace radioisotope is a radioisotope that is naturally occurring.
		This natural formation can be from the decay of heavier nuclei such as uranium-235 decaying into cesium-135.
		Natural occurrence of radioisotopes can also be driven by cosmic rays.
	en.wikipedia.org /wiki/Trace_radioisotope (78 words)

	ORNL Review Vol. 25, Nos. 3 and 4, 2002
		The peacetime production of radioisotopes at the Graphite Reactor for industrial, agricultural, and research applications began in 1946 under the management of Waldo Cohn of Clinton Laboratories and Paul Aebersold of the AEC.
		In August 1946, the Laboratory's research director, Eugene Wigner, handed the first shipment of reactor-produced radioisotopes, a container of carbon-14, to the director of the Barnard Free Skin and Cancer Hospital of St. Louis, Missouri.
		In August 1946, the Laboratory's research director, Eugene Wigner, handed the first shipment of a reactor-produced radioisotope, a container of carbon-14, to the director of the Barnard Free Skin and Cancer Hospital of St. Louis, Missouri.
	www.ornl.gov /info/ornlreview/rev25-34/chapter2sb2.htm (339 words)

	1996 Annual Report - Physical and Chemical Sciences
		This research will help Member States improve their ability to analyse trace quantities of materials by means of computer assisted nuclide identification, quality assurance provisions and 'loss free' counting and air monitoring.
		Fluorine-18 and iodine-123 are two cyclotron produced radioisotopes which can be used to label natural substrates, biomolecules and drugs for use as biochemical tracers in tomographic imaging.
		Trace element analysis of objects, especially ceramic materials, recovered in archaeological excavations are very useful for establishing chronologies.
	www.iaea.org /Publications/Reports/Anrep96/pcs.html (1558 words)

	Hazardous Waste Disposal Procedures (Site not responding. Last check: 2007-10-21)
		Some non-flammable, non-corrosive liquid waste and liquid radioisotope waste may be mixed with flammable waste provided that the materials are compatible.
		Some waste contaminated with trace amounts of chemicals can be rinsed and disposed of in the garbage as regular waste.
		Radioisotope waste tags, and disposal bags can be purchased through EH&S See section 7.0 for ordering information.
	www.safety.queensu.ca /safety/policy/eh&s/waste.htm (2093 words)

	Rednova NEWS \| Analytical methods: Improvements, advancements and new horizons1 (Site not responding. Last check: 2007-10-21)
		Such an approach provides investigators with a means to study the impact of trace elements on the physiology and biochemical regulation of a variety of animal models and humans in vivo.
		Researchers have utilized the signals from ^sup 31^P NMR to assess the bioenergetic status, from ^sup 1^H NMR to monitor intracellular oxygenation and lipid status, and from ^sup 13^C tracers to map a wide range of metabolic pathways in vivo, such as the glycolytic, pentose phosphate, glycogenolyic and fatty acid pathways.
		A study on trace elements in cardiovascular diseases initiated by the IAEA in the early 1970s did not completely achieve the set goals due to two reasons: noncompliance by the participants in adopting harmonized sampling protocols developed by the IAEA, and improper methods used for analysis.
	www.rednova.com /modules/news/tools.php?tool=print&id=468 (4270 words)

	INVITED TALKS (Site not responding. Last check: 2007-10-21)
		Trace elements in a substance are either inherent (original) or taken in from its environment after the production (birth).
		Such information includes chemical composition, concentration, distribution, chemical state, structure, isotope ratio, which are already used in several scientific fields such as archeology and geochemistry: e.g., archeologists often use it for provenance study and geochemists may use it to reveal the origin of a meteorite.
		Trace heavy elements in a micro sample with size less than 0.1mmf were also detected.
	iapf.physik.tu-berlin.de /EDXRS2002/invitedtalks.html (3127 words)

	Agriculture Canada / One Hundred Harvests (Site not responding. Last check: 2007-10-21)
		When soils contain an excess of one or more trace elements toxicity, and in extreme cases death, can occur in livestock.
		Because it could be used for experiments of long duration and did not require the elaborate human or animal facilities that were needed with radioisotopes, Buckley and coworkers decided to use the stable isotope.
		The same rate of dietary copper absorption was established with each method, and therefore the reliability of the methods was established and will be used in future nutritional studies.
	collections.ic.gc.ca /agrican/pubweb/hs270089.asp (654 words)

	Trace Element Analysis Lab at Dartmouth - CURRENT PROJECTS
		Kaste JM, Friedland AJ and Stürup S. Using stable and radioactive isotopes to trace atmospherically deposited Pb in montane forest soils.
		Klaue, B. and Blum, J.D. Trace analysis of arsenic in drinking water by inductively coupled plasma mass spectrometry: high resolution versus hydride generation.
		Tracing rearing tributaries of migrating Atlantic salmon (Salmo salar) using Sr isotopes.
	www.dartmouth.edu /~cehs/projects.html (855 words)

	Nuclear Science and Technology Development Center
		The tasks of Radioisotope Division include: Production and supply of radioisotope, Co-60 gamma-irradiation servics, Preparation and supplementation of radiopharmacentics, analysis of trace elements, Isotope researchsupport.
		In these radioisotopes, the I-131 have remarkable contribution in hospital for nuclear medicine application to the diagnosis and therapy of patient.
		The Radioisotope Division is responsible for operation and maintenace of two Co-60 hot cells.
	www.nstdc.nthu.edu.tw /english/radiso.html (335 words)

	Local Photonics company earns Army research award
		Trace Photonics' battery project and the five other award-winning projects are now being highlighted by the Army in a brochure that will be distributed at numerous small business and scientific events throughout the nation.
		In addition, Trace Photonics is also working with Southern Illinois University's College of a Engineering and Honeywell FMandT of Kansas City, Mo., to develop a light-weight lithium battery with a built-in solar recharger.
		Trace Photonics conducts research at its offices in the old Charleston railroad depot and in Albuquerque, N.M. Contact Rob Stroud at rstroud@jg-tc.com.
	www.colestogether.com /PHOTONICS%20AWARD.htm (461 words)

	Learn more about Carbon in the online encyclopedia. (Site not responding. Last check: 2007-10-21)
		The most prominent oxide of carbon is carbon dioxide, CO This is a minor component of the Earth's atmosphere, produced and used by living things, and a common volatile elsewhere.
		In water it forms trace amounts of carbonic acid, H
		Carbon-14 is a radioisotope with a half-life of 5715 years and has been used extensively for radiocarbon dating wood, archaeological sites and specimens.
	www.onlineencyclopedia.org /c/ca/carbon.html (1685 words)

	heavy_safety (Site not responding. Last check: 2007-10-21)
		Whether radioisotope or heavy metals, you must be introduced to these materials.
		You will use U and Th under radioisotope rules and I am going to micromanage the experiment.
		The heavy metals can be flushed out of the wells of crystallization plates with 1M nitric acid, resulting in liquid waste in a screw-cap container and a bunch of solid waste with trace level contmination.
	www.doe-mbi.ucla.edu /People/Recipes/Heavy_Safety (1246 words)

	information for nurses
		Radiopharmaceuticals are radioisotopes, mainly Technetium-99m, labelled or chemically connected to pharmaceuticals, which are chemicals designed to trace particular organs within the body.
		For example when imaging the skeletal system, the pharmaceutical used is phosphorus based, and with the metabolic activity of bone that naturally occurs during the day, is taken up by the skeletal system allowing images of the whole skeleton.
		The radioisotope is also normally excreted in bodily waste, so after 24 hours it would be likely that a patient who has undergone a diagnostic nuclear medicine procedure is radioactivity free.
	www.southernhealth.org.au /nm_patient_information.htm (2503 words)

	Technetium-99m Generator
		Since its humble beginnings in 1958, technetium-99m has become the most widely used radioisotope for diagnosing diseased organs.Technetium-99m, which is a radioactive isotope of the man-made element technetium, is the favored choice of the medical profession because the type of radiation it emits allows the practitioner to image internal body organs without causing radiation damage.
		Nuclear medicine is a branch of medicine that uses radioisotopes for research diagnosis and treatment of disease.
		This preeminent radioisotope was nearly overlooked when it was initially detected as a trace contaminant during the development of a different generator at the U.S. Department of Energy's Brookhaven National Laboratory in the 1950s.
	www.bnl.gov /bnlweb/history/Tc-99m.asp (802 words)

	barc
		It is a laser-based tech-nique for the detection of biomolecules at extremely trace levels, combining the ablative power (suitably mitigated through the matrix) of the laser and high efficiency of detection of the dislodged molecules by time of flight mass spectrometry.
		The newly procured ICPAES was employed extensively for the analysis of trace impurities in uranium, thorium, biological and environmental materials and of elements like Se, Te, Ce As, Hg etc. which were difficult to be analysed by existing methods.
		The technique of slurry sampling and determination of trace elements using rapid atomization GFAAS technique was standardized for the analysis powdered pharmaceuticals and dry biological samples without recourse to chemical dissolution.
	www.dae.gov.in /ar2001/barc.htm (12032 words)

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