isotope

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Words related to isotope

one of two or more atoms with the same atomic number but with different numbers of neutrons

References in periodicals archive ?
Stable carbon and nitrogen isotopic analyses of human remains can be used in conjunction with the evidence from archaeobotany and zooarchaeology to provide quantitative information about past diets (Lee-Thorp 2008).
Although measurements of calcium isotopes have a wide range of applications in research on bone and calcium metabolism, to date these applications have been limited to the use of artificially prepared calcium isotopic tracers such as [sup.
contains careless and misleading science, specifically Figures 2 and 4, which purport to display the isotopic measurements they listed in Table 3.
Included are descriptions of a number of theoretical and practical frameworks for analyzing and interpreting isotopic and elemental signals across a range of substrates.
As an ancillary benefit, the spike systems also will enable the USGS to re-measure the isotopic composition of atmospheric argon and calculate a new atomic weight for argon.
With his students, PDF's, and collaborating colleagues, he pursued many applications in geochemistry including ore formation, fossil fuel deposits, secular variations in the isotopic composition of oceanic sulfate, pollutant sulfur in sediments, lunar rocks, and addressed fundamental que stions such as the evolution of S-bacteria.
Applying isotopic analysis to tissues such as blood allows repeated sampling of known individuals or populations throughout the year (Hobson and Clark 1993; Ben-David et al.
Nd isotopic compositions range from mantle-like values ([epsilon]-Nd [approximately equal to] +3) for mafic rocks to values as low as [epsilon]-Nd [approximately equal to] -5 for more granitic compositions.
In a world-first, the researchers were able to show that changes in the isotopic composition of zinc, which can be detected in a person's breast tissue, could make it possible to identify a 'biomarker' (a measurable indicator) of early breast cancer.
In fact, elements found on the Moon show identical isotopic properties to those found on Earth.
March 27, 2012 /PRNewswire/ -- Los Gatos Research (LGR), the leader in precision trace gas analyzers, has released a new Isotopic N2O Analyzer that is the first instrument to directly measure 18O and site-specific 15N ratios in trace nitrous oxide (N2O) in air, in addition to measuring the N2O mole fraction.
This article presents new isotopic analyses of Islamic glass and plant ashes (from which they were made), building on scientific results of glass analysis from al-Raqqa, northern Syria as an essential first step.
Taking existing data on the chemical and isotopic composition of copper alloy objects and combining them with typological and chronological information within a GIS framework, FLAME aims to rewrite the history of human engagement with copper and its alloys across Eurasia, from Atlantic Iberia to the shores of the Pacific during approximately the 3rd to early 1st millennia BCE.
TEHRAN (FNA)- Scientists reconciled the accepted model of the moon's formation with the unexpectedly similar isotopic fingerprints of both bodies and the results suggest that the impact that formed the moon was so violent, the resulting debris cloud mixed thoroughly before settling down and forming the moon.