isotopic ratio वाक्य
उदाहरण वाक्य
मोबाइल
- Rapid advances in the use of isotopic ratios in archeology led Evershed and colleagues to start a scientific journal, Ancient Biomolecules.
- Further, the chromium isotopic ratios measured in the K-T boundary are similar to the chromium isotopic ratios found in carbonaceous chondrites.
- Further, the chromium isotopic ratios measured in the K-T boundary are similar to the chromium isotopic ratios found in carbonaceous chondrites.
- Here, definition 3 of isotopic ratio has been used, however, any of the three definitions of isotopic ratio can equally be used.
- The second-highest-priority target, a gold foil collector for measuring isotopic ratios of nitrogen, was undamaged and appeared in excellent condition, Stansbery said.
- Here, definition 3 of isotopic ratio has been used, however, any of the three definitions of isotopic ratio can equally be used.
- Ar Ar dating is a similar technique which compares isotopic ratios from the same portion of the sample to avoid this problem.
- By comparing the detected isotopic ratios to a measured standard, an accurate determination of the isotopic make up of the sample is obtained.
- The isotopic composition of the components in a biochemical system can be defined in different ways depending on the definition of isotopic ratio.
- Sample are analysed in rotation with standard with known elemental or isotopic ratios in order to measure the ratios in the sample for dating.
- It is now known that density of water also depends on the isotopic ratios of the oxygen and hydrogen atoms in a particular sample.
- This dating method is based on an isochron calculated based on isotopic ratios measured using N-TIMS ( Negative Thermal Ionization Mass Spectrometry ).
- Investigating lunar samples carried to Earth by the Apollo 15 and 17 missions found a deuterium-to-hydrogen ratio that matched the isotopic ratio in carbonaceous chondrites.
- The researchers probed the diet of the Neanderthal by measuring the isotopic ratios of nitrogen in skulls and jawbones recovered from a cave in Croatia.
- The cometary and asteroidal delivery of water to accreting Earth and Mars has significant caveats, even though it is favored by D / H isotopic ratios.
- Improved SIMS experiments showed that the silicon isotopes within each SiC grain did not have solar isotopic ratios but rather those expected in certain red-giant stars.
- Of particular interest, Manfred Schidlowski argued in 1979 that the carbon isotopic ratios of some sedimentary rocks found in Greenland were a relic of organic matter.
- The isotopic ratio of [ 12 C ] / [ 13 C ] was determined to be about or less than 50 % in the galactic disk.
- Monazite geochronology studies the ratio of parent isotopes to daughter isotopes ( isotopic ratio ), and calculates how much time has passed since daughter isotopes start accumulating.
- Because the different isotopes of lead have half-lives of 50 200 years, there is not enough time for the isotopic ratios to be homogenized throughout the whole ocean.
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