Random good picture Not show

1. There is also a section on isotope dilution analysis.

2. The isotopes are measured by counting their alpha emissions; each isotope emits alpha radiation of a characteristic frequency.

3. The isotope U-235 is unstable, decaying by a process called spontaneous fission.

4. The lunar surface also contains the light isotope helium-3, which is implanted in the surface by the solar wind.

5. Isotope gastric emptying studies may be useful in clinical practice.

6. Nevertheless the association or dissociation of the lead isotope signatures for ancient glasses contributes to the overall technological picture for them.

7. A stable isotope of potassium, 9K, is converted to 39Ar by neutron bombardment of the sample to be dated.

8. Uranium has two radioactive isotopes, each of which decays to an isotope of lead and helium.

9. The oxygen isotope chemistry of the corals reflects the composition and origin of the water in which they lived.

10. A hydrogeologist and an isotope chemist provided professional advice to the ongoing geothermal resource study.

11. Woodhead etal. combine such analyses with oxygen isotope analyses, and it is variations in the latter that are particularly significant.

12. The third isotope of hydrogen, hydrogen-3 or tritium, is highly radioactive and has a very short half-life.

13. The deep-sea core oxygen isotope record is a framework for a relative chronology for the Pleistocene.

14. Measurements of the resulting isotope ratios closely approximated those found in carbonaceous chondrite meteorites.

15. Every radioactive isotope provides an independent clock for measuring geological time.

15. Wish you can benefit from sentencedict.com and make progress everyday!

16. An analogue to mineral chronometry is O isotope geothermometry.

17. Increasing the helium-3 supply would mean scaling up the production of the dangerous radioactive isotope tritium.

18. The time taken for half of the atoms of a radioactive isotope to decay is called its half-life.

19. In any organic specimen, carbon-14 is present in tiny quantities, being swamped by the more abundant isotope, carbon-12.

20. Magnox reactors produce plutonium containing about 75 percent of plutonium 239 isotope.

21. Aiding his efforts was an improved method for dating rock known as uranium-lead isotope analysis.

22. Each case has to be considered on its merits where an ambiguous answer emerges from the stable isotope data.

23. As well as decaying naturally to a stable lead isotope, U occasionally also divides in half.

24. In one path, the 40K decays to a calcium isotope, 40Ca.

25. The new ingredient in the assessment of how many deaths the Windscale cloud caused is the radioactive isotope, polonium 210.

26. She could hear the adjacent streetlight sizzling like a radioactive isotope.

27. The simplest radioactive methods are based on decay of a radioactive isotope into a stable one.

28. They include a laboratory for handling tritium, the heavy radioactive isotope of hydrogen which is a fuel for fusion reactors.

29. The dynamics of transportation of HTO (tritium water) in a simulated tea soil ecosystem were studied on simulated pollutants using isotope tracer technique.

30. Uptake, translocation, and distribution of 14C-labelled oligosaccharides in watermelon seedling were investigated by the means of radioactive isotope tracer.