Galactic cosmic ray effects on iron and nickel isotopes in iron meteorites [PDF]
, 2020 We present model calculations for cosmogenic production rates in order to quantify the potential effects of spallation and neutron capture reactions on Fe and Ni isotopes in iron meteorites.
Leya, Ingo +5 more
core +2 more sources
Distinct iron isotopic signatures and supply from marine sediment dissolution [PDF]
, 2013 Iron (Fe) inputs to the surface ocean may stimulate photosynthesis and have an impact on the uptake of carbon dioxide in the ocean on glacial to inter-glacial timescales of climate change1. Global ocean reservoir-flux models2 indicate that 90% of Fe used
John, Seth G. +8 more
core +1 more source
Empirical evidence for the fractionation of carbon isotopes between diamond and iron carbide from the Earth’s mantle [PDF]
, 2014 S.M. would like to thank the Engineering and Physical Sciences Research Council, the Diamond Trading Company, and the Department of Physical Sciences, The Open University (UK) for financial support during his time as a PhD student at University College ...
Krispin, Catherine +16 more
core +1 more source
Use of three isotopes to calibrate human bone radiocarbon determinations from Kainapirina (SAC), Watom Island, Papua New Guinea [PDF]
, 2005 In archaeological dating, the greatest confidence is usually placed upon radiocarbon results of material that can be directly related to a defined archaeological event.
Green, Roger, Petchey, Fiona
core +1 more source
Iron isotopes and the redox evolution of Ediacaran sediments
Comptes Rendus. Géoscience, 2021 The Ediacaran age (ca. 570 Ma) Shuram excursion, a ca. $12‰$ depletion in $\delta ^{13}\mathrm{C}_{\mathrm{carb}}$, may record a dramatic oxidation of marine sediments associated with a reorganization of Earth’s carbon cycle closely preceding the rise of
Moynier, Frederic +5 more
doaj +1 more source
Analyzing the Quenchable Iron Pool in Murine Macrophages by Flow Cytometry
Bio-Protocol, 2020 Tissue-resident macrophages are pivotal for a tightly-regulated iron metabolism at a cellular and systemic level, since subtle iron alterations increase the susceptibility for microbial infections or drive multiple diseases. However, research on cellular
Michael Riedelberger, Karl Kuchler
doaj +1 more source
Biology, 2023 The purpose of this study is to gain insights into the subsistence activities and nutrition of the Samnite and Peligni populations who lived in the Abruzzo region (Italy) during the Iron Age. The samples under investigation are from Opi Val Fondillo (AQ)
Iuri Icaro +2 more
doaj +1 more source
Development of lowenergy accelerator-based production of medical isotopes [PDF]
, 2013 Here we present methods for production of new and existing isotopes for SPECT (Single Photon Emission Computed Tomography) and PET (Positron Emission Tomography) imaging using accelerator-based systems.
Beasley, P. +3 more
core +3 more sources
Fractionation of iron species and iron isotopes in the Baltic Sea euphotic zone [PDF]
Biogeosciences, 2010 To indentify sources and transport mechanisms of iron in a coastal marine environment, we conducted measurements of the physiochemical speciation of Fe in the euphotic zone at three different locations in the Baltic Sea.
J. Gelting +4 more
doaj +1 more source
SQUID-SIMS is a useful approach to uncover primary signals in the Archean sulfur cycle [PDF]
, 2014 The Agouron Institute and National Aeronautic and Space Administration Exobiology Award NNX09AM91G supported this work.Many aspects of Earth's early sulfur cycle, from the origin of mass-anomalous fractionations to the degree of biological participation,
Guan, Yunbin +19 more
core +1 more source