Results 121 to 130 of about 14,752 (295)

The Iron Stable Isotope Fingerprint of the Human Diet

Journal of Agricultural and Food Chemistry, 2013
The stable isotopes of iron disclose the metabolic pathways of iron within the human food chain. We have measured with precise multicollector ICP-MS the iron concentrations and stable isotope composition of 60 food products that are representative of the average German diet. We find that vegetables fall within the range typical of strategy I plants (-0.
Blanckenburg, F. von, Noordmann, J., Guelke-Stelling, M.   +2 more
openaire   +4 more sources

Using 13C-, 15N-, and 18O stable isotope analysis of human bone tissue to identify transhumance, high altitude habitation and reconstruct palaeodiet for the early medieval Alpine population at Volders, Austria [PDF]

, 2007
The analysis of stable isotopes of oxygen from structural carbonate in archaeological human bone samples originating from an early medieval cemetery in the Alpine community of Volders, Austria were used to determine the utilization of higher altitudes ...
McGlynn, George
core  

Cosmogenic Potassium in Iron Meteorites

, 2022
This project aims to reintroduce the 41K-K Cosmic ray exposure (CRE) age dating system for iron meteorites. For this, very low amounts of potassium isotopes need to be extracted from the iron meteorite. Attempts using chemical extraction methods, i.e.,
Khan, Hammad
core  

Origin and fate of copper in a small Mediterranean vineyard catchment: New insights from combined chemical extraction and δ65Cu isotopic composition [PDF]

, 2013
For centuries, many Mediterranean catchments were covered with vineyards in which copper was widely applied to protect grapevines against fungus. In the Mediterranean-type flow regime, brief and intense flood events increase the stream water discharge by
Probst, Jean-Luc, Aubert, Dominique, Probst, Anne, El Azzi, Désirée, Viers, Jérôme, Guiresse, Agnès Maritchù, Caparros, Jocelyne, Guizien, Katell, Charles, François, Guiresse, Maritxu   +9 more
core   +1 more source

A Non‐Covalent [4Fe–4S]/[2Fe] Interface in HydF Guides [FeFe]‐Hydrogenase Maturation

Angewandte Chemie, EarlyView.
Bridged or not? 57Fe NRVS reveals a non‐covalent, electronically coupled interaction between the HydF [4Fe–4S] cluster and the [2Fe] precursor. Boltz‐2 structure predictions suggest that the cubane organizes lipoate‐dependent Hmet chemistry, positioning intermediates for assembly of the CH2–NH–CH2 bridge during H‐cluster biosynthesis.
Giorgio Caserta, Princess R. Cabotaje, Armel T. Waffo, Deepak Prajapat, Ilya Sergueev, Stefan Frielingsdorf, Gustav Berggren   +6 more
wiley   +2 more sources

Iron absorption and loss, and efficacy of iron supplementation with and without prebiotics in children with virally suppressed HIV: three prospective studies in South Africa

Nature Communications
Children living with HIV are at risk for iron deficiency, yet optimal strategies for prevention and treatment remain unclear. Here, we investigate iron absorption, losses, and the efficacy and safety of oral iron supplementation with versus without ...
Jeannine Baumgartner, Renée Blaauw, Nadja Mikulic, Charlene Goosen, Shaun L. Barnabas, Mark F. Cotton, Michael B. Zimmermann   +6 more
doaj   +1 more source

Iron isotopic fractionation in mineral phases from Earth's lower mantle: Did terrestrial magma ocean crystallization fractionate iron isotopes?

, 2019
Iron is the most abundant transition metal in the Earth's interior, yet considerable uncertainties remain as to why mantle-derived rocks have diverse iron isotopic compositions.
Zhao, Jiyong, Yang, Hong, Hu, Michael Y., Bi, Wenli, Alp, Esen E., Dauphas, Nicolas, Lin, Jung Fu, Wentzowitch, Renata M., Okuchi, Takuo, Liu, Jin, Roskosz, Mathieu, Liu, Jiachao   +11 more
core   +1 more source

Study of nuclear physics input-parameters via high-resolution γ-ray spectroscopy

EPJ Web of Conferences, 2017
For nucleosynthesis networks of isotopes heavier than those in the iron-peak region, reaction rates are often calculated within the Hauser-Feshbach statistical model.
Scholz Philipp, Heim Felix, Mayer Jan, Spieker Mark, Zilges Andreas   +4 more
doaj   +1 more source

Modelling the speciation and biogeochemistry of iron in oceanic surface waters at the Bermuda Atlantic Time-series Study site

, 2006
By means of numerical modelling the cycling of iron between its various physical (dissolved, colloidal, particulate) and chemical (redox state and organic complexation) forms in the upper mixed layer of the ocean is analysed.
Weber, Lisa
core  

Data for: Cosmogenic effects on chromium isotopes in iron meteorites

, 2019
The tables of the article "Cosmogenic effects on chromium isotopes in iron meteorites" (GCA-D-18-00388)THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-
qin, L (via Mendeley Data)
core   +1 more source