Isotopes of a given element have the same number of electrons, but their atomic mass and nuclear spin differ through the number of neutrons. The trivial and prominent effect on isotope exchange is the ...

Sm-Nd isotopic compositions are reported for 20 fine- and 5 coarse-grained samples of the Belt-Purcell Supergroup of western North America. $\varepsilon_{Nd}$ and Sm/Nd ratios for fine-grained ...

Because oxygen-bearing sulfate minerals trap and preserve signals from Earth's atmosphere, scientists closely study how they form. Sulfates are stable over billions of years, so their oxygen isotopes ...

Strontium isotopes are frequently used in archaeological studies to establish the provenance and migration history of prehistoric people and artifacts. Many of these studies may be based on incorrect ...

Stable isotope techniques can help improve soil management and crop nutrition. To ensure the quality of stable isotope analysis through isotope ratio mass spectrometry (IRMS), appropriate sample ...

Radioactive isotopes have been discovered by Russia's state weather agency in test samples more than two weeks after a mysterious and deadly explosion earlier this month at a naval weapons testing ...

A unique opportunity to assess in vivo body composition was provided by a single direct cadaver analysis in a patient who willed her body to the authors' laboratories, having had an isotope dilution ...

This clip shows how carbon is made up from sub-atomic particles. Electron shells are mentioned. Two extra neutrons are added to make an unstable isotope which explodes at the end. This clip could be ...

I read George B. Kauffman’s article “Celebrating the Isotope” with great interest, as I did not know most of this history (C&EN, Dec. 2, 2013, page 30). However, there are some confusing statements in ...

WASHINGTON, Dec. 13, 2024 (GLOBE NEWSWIRE) -- ASP Isotopes Inc. NASDAQ: ASPI (“ASP Isotopes” or the “Company”), an advanced materials company dedicated to the development of technology and processes ...