isotope abundance

isotope abundance

[′ī·sə‚tōp ə¦bən·dəns]
(nuclear physics)
The ratio of the number of atoms of a particular isotope in a sample of an element to the number of atoms of a specified isotope, or to the total number of atoms of the element.
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References in periodicals archive ?
The isotope abundance ratios were a particularly important clue, because they could reveal where the iron came from-one variant pointed to iron from the ancient Loess Plateau of northern China, a frequent source of iron-rich dust in the northwest Pacific, while another suggested the younger, more volcanic continental shelf was the iron source.
In SILAC-based protein synthesis and degradation experiments, the degradation rate constant of targeted proteins can be readily derived from the decrease of relative isotope abundance (RIA) or the percentage of preexisting labeled protein [20].
(Poster presentations will be published separately in the Journal of Plasma and Fusion Research.) A sample of paper titles for ITC includes atomic and molecular processes in magnetic fusion plasmas, plasma polarization spectroscopy, isotope abundance analysis from stellar spectra, and radiotherapy.
The solar research team has managed, for the first time, to substantiate with consistent physical models every link in the complex chain, from the isotope abundance in the icepack to the sunspot number.
Stable isotope abundance measurements in Canada were initiated by Henry ('Harry') G.
Natural isotope abundance in bowhead whale (Balaena mysticetus) baleen: markers of aging habitat usage.
The isotope abundance measurements suggested that Myrica did not obtain all of its nitrogen through symbiotic fixation since the 15N values of its tissues were not more similar to air compared to the grasses [ILLUSTRATION FOR FIGURE 1 OMITTED].
Effects of diet, climate and physiology on nitrogen isotope abundances in terrestrial foodwebs.
Particularly in case of MIDA, it includes the calculation of natural isotope abundances and relative isotope abundances.
Natural isotope abundances in bowhead whale (Balaena mysticetus) baleen: Markers of aging and habitat usage.
Relative isotope abundances for a selected chemical element can be found in the CRC Handbook of Chemistry and Physics [6].
Utilizing stable isotope abundances of lichens to monitor environmental change.