Isotopic in a sentence

The sum of the isotopic ratios of oxygen-17/oxygen-16 and oxygen-18/oxygen-16 is denoted as ΔO, and is characteristic of specific parent objects.

The researchers analyzed the isotopic composition of oxygen in a stalagmite formed from calcareous water in a cave in southern Germany.

The U/Pb isotopic dating technique is wonderfully accurate and mighty helpful in dating geologic events from volcanic eruptions, continental movements to mass extinctions.

Biologists will compare the feathers’ isotopic signatures with those of feathers recovered from swan populations in northern states during the summer months.

Egyptian glass consistently contained more hafnium and had lower isotopic ratios than glass produced in the Levant, the team found.

So you do a measurement where you have an isotopic tag, a signal which itself embeds information about the isotopes and the geometry.

The researchers looked at the hydrogen isotopic composition of the water and discovered it was very close to that of Earth, suggesting the water on Earth has the same source as that of the Hayabusa grains.

Thus, although no cellular fossils have been found in these rocks, the isotopic ratios of carbon suggest that life may have been present that far back in Earth’s history.

A 2008 analysis of 12 C/ 13 C isotopic ratios of organic compounds found in the Murchison meteorite indicates a non-terrestrial origin for these molecules rather than terrestrial contamination.

After irradiation, samples are heated in a series of steps and the xenon isotopic signature of the gas evolved in each step is analysed.

A particular feature was the ability to accelerate rare isotopic and radioactive beams.

At around 41.5 million years ago, stable isotopic analysis of samples from Southern Ocean drilling sites indicated a warming event for 600 thousand years.

Bornemann, Norris RD, Friedrich O, Beckmann B, Schouten S, Damsté JS, Vogel J, Hofmann P, Wagner T.,Isotopic evidence for glaciation during the Cretaceous supergreenhouse.

By studying the ratio of 14 C to 13 C incorporated into a plant—its isotopic signature —it is possible to deduce how much CO 2 is taken up at night and how much in the daytime.

Correcting for isotopic fractionation, as is done for all radiocarbon dates to allow comparison between results from different parts of the biosphere, gives an apparent age of about 440 years for ocean surface water.

Every quasigroup is isotopic to a loop.

Finally, correlation between different isotopic dating methods may be required to confirm the age of a sample.

For each element name, symbol, atomic number, and mean atomic mass value for the natural isotopic composition of each element are shown.

For example, if the two components differ only in isotopic content, then Raoult's law is essentially exact.

However, a quasigroup which is isotopic to a group need not be a group.