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tracer
radioactive tracer
radioactive tracer A radioactive
isotope, whose movement can be monitored, that is used to trace the pathways by which individual substances move through an organism, a living system, the abiotic environment, etc. Non-radioactive chemical analogues of certain substances may be used for the same purpose if their movement can be monitored (e.g. caesium, which can be substituted for potassium).
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Tracer Analytics Launches Tracer LSI 100 Index; First Index to Exclusively Track Five Major Sectors of the Life Sciences Industry.
PR Newswire; 9/20/2004; 700+ words
; ...PRINCETON, N.J., Sept. 20 /PRNewswire/ -- Tracer Analytics, an independent provider of quantitative...industry, announced today the launch of the "Tracer LSI 100 Index." The Tracer LSI 100 Index measures the collective performance...
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Tracer Looks to Turkmenistan After Series of Fruitless Ventures.(Tracer Petroleum of Canada)(Brief Article)
Newspaper article from: The Oil Daily; 3/28/2002; 700+ words
; Tracer Looks to Turkmenistan After Series of Fruitless Ventures Tracer Petroleum, a Canadian junior run by former employees...series of other -- so far fruitless -- initiatives. Tracer this week said it was negotiating with a "significant...
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Tracers: TheyAEre not just for accreditation surveys.
Newspaper article from: ED Management; 8/1/2005; 700+ words
; ...JCAHO) began using tracer methodology as part...perform their own tracers in preparation for...have learned that tracers can become, in and...safety walk around, a tracer review involves following...says. However, the tracer process also was...preparation, she says. Tracers now play ...
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Tracer Enters Into Agreement for Turkmenistan Petroleum Project.
PR Newswire; 2/5/2002; 700+ words
; CALGARY, Alberta -- Tracer Petroleum Corporation (BULLETIN BOARD: TCXX) ("Tracer" or the "Company") reports that it has entered...Inc. ("Canneft") of Houston, TX, whereby Tracer will participate with Canneft in the development...
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Tracer Signs Memorandum of Understanding Covering Significant Business Opportunities in Iran.
PR Newswire; 6/28/2000; 700+ words
; ...The following was released on behalf of the Board of Tracer Petroleum Corporation, by David Robinson, President and CEO: Tracer Petroleum Corporation (OTC Bulletin Board: TCXXF) ("Tracer" or the "Company") reports that a Memorandum of...
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Tracer Adds to High-End Aviation Executive Team as Business Grows; Aviation Industry Veterans Help Airlines Find Parts and Services Just-in-Time.
PR Newswire; 1/7/2002; 700+ words
; MILWAUKEE -- Tracer, a leader in the commercial aviation...amp; Overhaul Services. Clayton Lim is Tracer's new Executive Vice President of Aftermarket...Executive Vice President of Operations. Tracer CEO Bill Morales said, "Our businesses...
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Fluorescent tracers enable automatic identification and sorting of waste plastics.
Magazine article from: British Plastics & Rubber; 6/1/1998; ; 700+ words
; ...practical to have a different tracer for each potential variant...To overcome this, the tracers are used in a binary...higher energy states. The tracers then emit 'fluorescent' light, each tracer - or combination of tracers - having a unique fluorescent...
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Tracer methodology: How it can help you improve quality.
Newspaper article from: HealthCare Benchmarks and Quality Improvement; 6/1/2004; 700+ words
; ...is beginning to learn about tracer methodology, Whetsell already...retrospective one, she observes. The tracer methodology used by JCAHO surveyors...organizations are conducting tracers to prepare for an on-site...beyond survey preparation. The tracer methodology is similar to other...
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Dual-Tracer PET/CT Imaging in Evaluation of Metastatic Hepatocellular Carcinoma
Magazine article from: The Journal of Nuclear Medicine; 6/1/2007; ; 700+ words
; ...metastatic HCC disease, to evaluate the tracer characteristics of individual organ metastasis...All patients had undergone a "dual-tracer" PET/CT same-day protocol with...groups on the basis of their primary HCC tracer avidity: ^sup 18^F-FDG-avid group...
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Relationships between Tracer Ages and Potential Vorticity in Unsteady Wind-Driven Circulations
Magazine article from: Journal of Physical Oceanography; 11/1/2005; ; 700+ words
; ...ages from ideal age tracer, linear, and exponential transient tracers is highly coordinated...general, different tracers give different tracer ages for the same...that for steady flow tracer ages from tracers with simple source...
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Tracers of Ocean-Water Masses
Book article from: Water:Science and Issues
...are called transient tracers, as are the chlorofluorocarbons...designation as transient tracer implies a human-derived...steady input function. Tracer Timescales Matched To...The decision of which tracer to use in an oceanographic...The conventional ocean tracers and stable isotope ...
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Tracers in Fresh Water
Book article from: Water:Science and Issues
Tracers in Fresh Water A tracer as used in hydrology is...tracking water movement. Tracers primarily are used to...Introduced Tracers. Introduced tracers, such as dyes or chloride...Hydrologists can inject a tracer into a well (the injection...
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Radioactive Tracers
Encyclopedia entry from: UXL Encyclopedia of Science
...to add a radioactive tracer to the oil. Each company...assigned a different tracer. A technician at the...Another application of tracers might be in scientific...Radiation from the phosphorus tracer would expose the film...applications of radioactive tracers have been in the field...
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tracers and groundwater
Book article from: The Oxford Companion to the Earth
tracers and groundwater Tracers of groundwater flow include both naturally...materials, or solutes. Monitoring of tracers in wells or springs can provide information...pathways of groundwater movement. Many tracer studies in limestone aquifers with...
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tracer
Book article from: The Columbia Encyclopedia, Sixth Edition
tracer an identifiable substance used to follow...biological process. In chemistry the ideal tracer has the same chemical properties as the...quantitatively assessed. In biochemistry tracers have been in use since the beginning of...
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