isotopic composition in a sentence

Examples

1. He received a Leonard Medal from the Meteoritical Society in 2011 for his work on the isotopic composition of stable nuclei.
2. Exactly because the different uranium isotopes have different half-lives, when the Earth was younger, the isotopic composition of uranium was different.
3. The isotopic composition of the resulting precipitation ( R p ) can be derived from the composition of the remaining vapor:
4. In other words, there are multiple fractionation steps that must be taken into account in understanding the isotopic composition of lipids.
5. Also, three of the four tektite strewnfields have been linked by their age and chemical and isotopic composition to known impact craters.
6. In humans, changes in the calcium isotopic composition of urine have been shown to be related to changes in bone mineral balance.
7. The process can cause delta-values of up to  " 40, where delta is a representation of the difference in isotopic composition.
8. It was especially significant due to the fact that it had glass inclusions that were found to contain rare nitrogen isotopic compositions.
9. The isotopic composition of the components in a biochemical system can be defined in different ways depending on the definition of isotopic ratio.
10. Comparison of the zinc isotopic composition of Lunar samples with that of Earth and Mars rocks provides further evidence for the impact hypothesis.