Sentences with phrase «with radioactive carbon»

The nutrients were laced with radioactive carbon, so if the solution was digested, a radiation monitor above the sample would detect the resulting gas.

They sent soil samples for DNA testing, looking for matches with particular genes known to be found in microbes and fungi; they tried to stimulate microbial growth on a wide variety of substances and then count the cells produced; and they used highly sensitive radiorespiration activity assays, which involve feeding the soil microorganisms a food source which has been labelled with radioactive carbon, which can then be used to detect if the microorganisms are active.

During the PET scans, participants were given a chemical — similar in structure to an antidepressant but not a high enough dose to have a pharmacological effect — labeled with a radioactive carbon.

To track the antibiotic's journey from water to pepper, the researchers labeled TCC with radioactive carbon (C14).

Not exact matches

The website hyperphysics.phy - astr, says that «carbon dating is a variety of radioactive dating which is applicable only to matter which was once living and presumed to be equilibrium with the atmosphere.»

19 Plastic cards did not yet exist, so Shepherd - Barron's ATM accepted only checks laced with identifying traces of radioactive carbon - 14.

Researchers examined the covers with carbon dating — which looks at a radioactive form of carbon in a sample to determine its age — and other tools, finding the artifacts are authentic.

When the core ignites, carbon and oxygen fuse to form lots of radioactive cobalt - 56, whose radioactive decay into iron - 56 with a half - life of 77 days powers the peak brightness of a supernova.

Experiments with radioactive methane revealed that bacteria living in the moss rapidly converted the gas into carbon dioxide which was then sucked up by the moss.

Carbon has three isotopes — forms of the element with the same number of protons but different masses — but only carbon - 14 is radioactive.

By combining RPO results with analyses of radiocarbon (a radioactive isotope of carbon with a half - life of 5,730 years) and stable carbon isotopes, scientists can identify the sources and ages of organic matter in the environment.

Kim, Kawamura and colleagues find that the nebula BFS64 is associated with a molecular cloud containing 23 thousand solar masses of radioactive carbon monoxide (13CO) at a distance of 3200 pc.

Radiocarbon is a radioactive form of carbon that's created when nitrogen reacts with cosmic rays in the upper atmosphere.

study identifies 13 clouds in the molecular gas complex associated with these stars, with a total of 42610 solar masses in radioactive carbon monoxide (13CO).

For instance, radiocarbon dating determines the age of biological remains based on the ratio between the carbon isotopes (atoms of the same element with different numbers of neutrons) carbon - 12 and carbon - 14 it holds - this proportion changes as radioactive carbon - 14 breaks down while stable carbon - 12 does not.

A fossil is the remains or traces of a once - living plant or animal that was preserved in rock or other material before the beginning of recorded history Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

carbon - 14 dating dinosaur bones carbon dated dinosaur fossils date Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

Also, certain Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

It is nonmetallic and tetravalent — making four electrons Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

Plus evidence for a much younger Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

Spare parts management: software for the creation of spare parts catalogue, sales catalogue, electronic parts catalogs and spare parts, consultation over Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

Compound Forms / Forme composte: Inglese: Italiano: activated carbon: carbone attivo: active carbon: carbone attivo: carbon 14 n noun: Refers to person Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

Dating is a stage of romantic relationships in humans whereby two people meet socially with the aim of each assessing the other's suitability as a Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

Bone Diagenesis and Radiocarbon Dating of Fish Bones at the Shag River Mouth Site, New Zealand Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were Dating is a stage of romantic relationships in humans whereby two people meet socially with the aim of each assessing the other's suitability as a

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Free science and math simulations for teaching STEM topics, including physics, chemistry, biology, and math, from University of Colorado Boulder Carbon - 14, 14 C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

By using dual radioactive tracers with differing lifetimes, Wilson et al. [2017] found short term increases in CH4 and CO2 release during periods of thaw in a discontinuous permafrost were generally offset by long - term accumulation of peat in the ensuing millennia, leading the regions to continue to be net carbon sinks with negative atmospheric radiative forcing, given the long life - time of atmospheric CO2.

A pioneer carbon cycle diagram, remarking that «a quantitative statement is rarely attempted,» was Hutchinson (1948), pp. 222 - 23; the idea may have been drawn from «compartment» models of biological systems familiar in the 1940s to people who worked with radioactive tracers, see Atkins (1969).

It's a classic dilemma: If the solution to the climate problem is to reduce carbon dioxide emissions through nuclear power, then future generations spared catastrophic global warming must figure out what to do with our radioactive waste.

As stated earlier, I agree with the point that tropospheric aerosols from fossil fuels are incredibly bad for human health and other environmental impacts (black carbon soot, acid rain, radioactive emissions, mercury poisoning), putting us in a situation of damned if we do, damned if we don't.