... at the Earth's surface, chemical reactions produce these isotopes of aluminum and beryllium. If the rocks are then buried ... to examine the Zhoukoudian site. The Purdue Rare Isotope Measurement Laboratory, which is funded by the National Science ...
... world By gathering all of these published measurements and carefully plotting carbon isotopic data against oxygen ... a simple, alternative view of the thousands of carbon isotope measurements that had been taken as evidence of geochemical catastrophes ...
... in the ancient ocean. Pore-fluid iron isotope measurements have so far been restricted to the continental ... colleagues have helped fill this gap be measuring iron isotopes in pore fluids from both the Eel ...
... drier over the past 50,000 years. Isotopic measurements performed on fossil land snail ... . Small changes in the ratio of heavy to light isotopes can be measured with a high degree of accuracy and precision ...
Isotopic measurements performed on fossil land snail shells found in ancient soils on the subtropical eastern Canary Islands resulted in oxygen isotope ratios that suggest the Spanish archipelago off ...
... possible by advances in the speed and efficiency of stable isotope analyses of water, which allowed scientists to essentially ... to. Never before was it possible to make so many isotopic measurements and get a better view of water ...
... between May and July of that year. They then used hydrogen and carbon isotope measurements to determine when and where the monarchs were born. Isotope values in milkweed vary longitudinally and can be measured in monarch wings, Miller said. "It provides a natal ...
... of Pure and Applied Chemistry's (IUPAC) Commission on Isotopic Abundances and Atomic Weights. This organization oversees ... purity and source of food, such as vanilla and honey. Isotopic measurements of nitrogen, chlorine and other elements are used for tracing ...
... of debris from the creation of the crater. Stardust NExT also will measure the size and distribution of particles flowing from Tempel ... ," Brownlee said. These include the ability to make precise isotope measurements in micron-size grains, or detect ...
... of California, Berkeley and the University of Chicago measured the concentrations of oxygen isotopes found in the CAIs. In the recent research ... (CAIs)," said Ian Hutcheon, one of the LLNL scientists. "The isotopic measurements indicate that this CAI was transported among ...
... of Science report the first oxygen and nitrogen isotopic measurements of the Sun, demonstrating that they are verydifferent from the same ... was responsible for uniformly enhancing the two rarer isotopes, 17O and 18O, in the terrestrial planets. The Science ...
... for this, says a new study based on newly developed isotope measurements. This study has now been published in the scientific journal Science by German scientists from the Universities of Bern ...
... to Earth, contain large variations in titanium isotopes. Measurements of terrestrial and lunar samples show ... for the effects of cosmic rays, which could have changed the titanium isotopic composition of the lunar samples. Earth and the moon ...
... instruments to find a different half-life for samarium, one of the isotopes used to chart the evolution of the solar system ...
... . Since the chemistry of life prefers lighter isotopes, amino acids enriched in the heavier carbon ... analysis. This is the first time that carbon isotope measurements have been reported for these amino acids in Tagish Lake ...
