To measure temperature change, Barlow looked at the ratio of deuterium ( a heavy isotope of hydrogen ) to normal hydrogen in sections of the ice core covering the last 700 years.
32.
The question could be answered by examining phage particles derived from co-infection of bacteria with genetically marked Lambda phages that were labeled with heavy isotopes ( 13 C and 15 N ).
33.
By consulting a variety of experts, Cravens learned the electric current had to be pulsated to force deuterium, a heavy isotope of hydrogen, out of heavy water and into palladium, he said.
34.
Michel Becchi and his colleagues at the CNRS analytical chemistry laboratories in Vernaison say that synthetic testosterone can be easily recognized because it contains more of the heavy isotope carbon-13 than the natural hormone.
35.
Familiar examples of other such processes transforming energy from the Big Bang include nuclear decay, in which energy is released which was originally " stored " in heavy isotopes, such as uranium and thorium.
36.
Tin is generated via the long S-process in low-to-medium mass stars ( with masses of 0.6 to 10 times that of Sun ), and finally by beta decay of the heavy isotopes of indium.
37.
4 ) Can we date the age of heavy isotopes with long half-lives ( say billions of years ), by comparing the ratio of the original isotopes with the stable products, much like carbon dating?
38.
The relative enrichment of the heavy isotopes in rainwater ( as referenced to mean ocean water ), when plotted against temperature falls predictably along a line called the global meteoric water line ( GMWL ).
39.
Since silicon burning occurs so late in the process ( last weeks before implosion ) there's not enough time for enthalpically unfavored production of heavy isotopes and multiple decay to produce significant quantities of 62 Ni.
40.
Full replacement with heavy atom isotopes can be accomplished in higher organisms with other non-radioactive heavy isotopes ( such as carbon-13, nitrogen-15, and oxygen-18 ), but this cannot be done for the stable heavy isotope of hydrogen.
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