radioactive carbon


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Related to radioactive carbon: C 14

radioactive carbon

See tracer.

radiocarbon

Any of the radionuclides of carbon, the most common of which are 11C, which has a half-life of 20 minutes, and the beta-emitting 14C, which has a half-life of 5,730 years and is used to date archaeological, geological and hydrogeological material.
References in periodicals archive ?
To confirm that the radioactive carbons were in fact incorporated in the structure of DLIF, we subjected the radiolabeled DLIF obtained from fraction 6 (Fig.
Lastly, are radioactive carbons in the structure of DLIF?
The PR experiment conducted nine tests and found small quantities of organic matter with radioactive carbon in seven of the nine vaporized samples.
In fact, the experiment found that carbon dioxide was released and that it contained radioactive carbon atoms.
Using radioactive carbon, Thomas and Duval have shown that cysts photosynthesize, but otherwise they just wait for the next season's action.
The test measures the concentration of radioactive carbon dioxide exhaled by a person 20 minutes after being given radioactively labeled erythromycin, an antibiotic that CYP 3A4 breaks down.
Karl and his colleagues used nutrients labeled with radioactive carbon to test for living microbes in the melted ice.
According to Marvin Rowe, a professor emeritus at Texas A and M University College Station, who led the research team, the new method is a form of radiocarbon dating, the archaeologist's standard tool to estimate the age of an object by measuring its content of naturally-occurring radioactive carbon.
After tagging this HCA with radioactive carbon, they packaged a small quantity into capsules--each containing an amount equal to that found in five well-done hamburgers.
Washington, March 22 (ANI): In a new research, scientists have found that radioactive carbon dioxide (CO2) produced from atomic bomb tests in the atmosphere absorbed by grapes can be used to accurately determine if wine vintages are fake or not.
In one Viking experiment, a nutrient solution labeled with carbon-14 moistened a bit of Martian "soil," causing the sample to emit gases containing the radioactive carbon in a manner suggesting metabolism.
As soon as the lenses were inserted, the cats were injected with a glucose analog, 2-fluorodeoxyglucose, labeled with radioactive carbon isotopes.