Results 31 to 40 of about 37,540 (245)
The IRHUM (Isotopic Reconstruction of Human Migration) database – bioavailable strontium isotope ratios for geochemical fingerprinting in France [PDF]
Earth System Science Data, 2014 Strontium isotope ratios (87Sr / 86Sr) are a key geochemical tracer used in a wide range of fields including archaeology, ecology, food and forensic sciences.
M. Willmes +9 more
doaj +1 more source
Yankuang ceshi, 2019 BACKGROUND The traceability study of uranium ore concentrates plays an important role in nuclear forensics. By measuring the abundance ratios of lead and stontium isotopes, the results can provide some geographical indication information for traceability.
XU Zhuo +5 more
doaj +1 more source
Finding Mycenaeans in Minoan Crete? Isotope and DNA analysis of human mobility in Bronze Age Crete.
PLoS ONE, 2022 We undertook a large-scale study of Neolithic and Bronze Age human mobility on Crete using biomolecular methods (isotope analysis, DNA), with a particular focus on sites dating to the Late Bronze Age ('Late Minoan') period.
Michael Richards +9 more
doaj +1 more source
Scientific Reports, 2021 Strontium and oxygen isotopes of individuals from El Hundido and Valdescusa (north of Spain) sites, corresponding to the Bell Beaker culture, were analysed in order to determine mobility patterns and provenance areas.
L. A. Ortega +5 more
doaj +1 more source
Extreme enrichment in atmospheric 15N15N. [PDF]
, 2017 Molecular nitrogen (N2) comprises three-quarters of Earth's atmosphere and significant portions of other planetary atmospheres. We report a 19 per mil (‰) excess of 15N15N in air relative to a random distribution of nitrogen isotopes, an enrichment that ...
Fischer, Tobias P +8 more
core +1 more source
Determination of strontium isotope ratios in plant samples by wet ashing digestion
Results in Earth SciencesStrontium isotope provenance analysis has been widely applied across multiple disciplines, including archaeology, food science, and forensics. The establishment of bioavailable ⁸⁷Sr/⁸⁶Sr maps, known as isoscapes, which rely on a substantial number of ...
Wenyan Cheng +3 more
doaj +1 more source
Global Ecology and Conservation, 2023 Stable isotopes of animal tissue have been used to estimate diet for many consumer species and places, but the ability to assign contributions to all food items is limited by the number of tracers used, and the separation of the tracer data among the ...
Garth Mowat +2 more
doaj +1 more source
Strontium isotope compositions of river waters as records of lithology-dependent mass transfers : the Garonne river and its tributaries (SW France) [PDF]
, 2000 The relation of lithology in the drainage basin to the dissolved load of the Garonne river and its main tributaries, in southwestern France, was evaluated by determining 87Sr/86Sr ratios, and concentrations of major and trace elements during a 2-year ...
Clauer, Norbert +2 more
core +2 more sources
Continental weathering as the source of iron in Jurassic iron oolites from Switzerland
Swiss Journal of Geosciences, 2023 Iron is extremely insoluble in oxic seawater. The lack of a large aqueous reservoir means that sediments rich in authigenic iron are rare in the modern ocean.
Stefan Schunck +4 more
doaj +1 more source
Bose-Einstein Condensation of $^{88}$Sr Through Sympathetic Cooling with $^{87}$Sr [PDF]
, 2010 We report Bose-Einstein condensation of $^{88}$Sr, which has a small, negative s-wave scattering length ($a_{88}=-2$\,$a_0$). We overcome the poor evaporative cooling characteristics of this isotope by sympathetic cooling with $^{87}$Sr atoms.
de Escobar, Y. N. Martinez +4 more
core +2 more sources