Results 71 to 80 of about 81,493 (230)

RÉGÉSZETI ÉS TÖRTÉNETI FÉMTÁRGYAK NYERSANYAGA SZÁRMAZÁSI HELYÉNEK MEGHATÁROZÁSA IZOTÓPGEOKÉMIAI MÓDSZERREL: ÓLOM-, EZÜST- ÉS RÉZIZOTÓPOKEGYÜTTES ALKALMAZÁSA [PDF]

open access: yes, 2017
A cikk irodalmi összefoglalás három fém (ólom, ezüst és réz) izotópjainak alkalmazásáról régészeti és történeti fémtárgyak nyersanyaga eredetének kutatásában. Ólomizotóp-méréseket már az 1950-es évek óta végeznek különféle fémtárgyakon.
Bajnóczi, Bernadett   +2 more
core  

Direct dating of mid-crustal shear zones with synkinematic allanite:new in situ U-Th-Pb geochronological approaches applied to the Mont Blanc massif [PDF]

open access: yes, 2013
International audienceDating the timing of motion on crustal shear zones is of tremendous importance for understanding the assembly of orogenic terranes.
Cenki-tok, Benedicte   +4 more
core   +3 more sources

Calcium isotope measurements using a collision cell (CC)-MC-ICP-MS

open access: yesChemical Geology, 2022
Calcium is a major element in terrestrial planets and has six stable isotopes, including 40 Ca which is a product of radioactive decay of 40 K (T1/2=1.25 Gyrs). Calcium isotope geochemistry has therefore been used to trace biological and geological processes in various environments as well as radiogenic dating.
Dai, Wei   +7 more
openaire   +3 more sources

Creating Value for the Montepulciano D’Abruzzo PDO Chain: A Pilot Study of Supply Chain Traceability Using Multi-Elemental and Chemometrics Analysis of Wine and Soil

open access: yesApplied Sciences
This study aims to enhance the value of the Montepulciano d’Abruzzo PDO supply chain by integrating multi-elemental and isotopic profiling with chemometric analysis.
Mattia Rapa   +4 more
doaj   +1 more source

Evaluation of the combined measurement uncertainty in isotope dilution by MC-ICP-MS [PDF]

open access: yes, 2018
The combination of metrological weighing, the measurement of isotope amount ratios by a multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS) and the use of high-purity reference materials are the cornerstones to achieve improved ...
Fortunato, G., Wunderli, S.
core  

Lighter serum copper isotopic composition in patients with early non-alcoholic fatty liver disease [PDF]

open access: yes, 2020
Objective The occurrence of non-alcoholic fatty liver disease (NAFLD) is globally increasing. To challenge the current incidence of NAFLD, non-invasive markers that could identify patients at risk or monitor disease progression are an important need ...
Costas Rodriguez, Marta   +6 more
core   +1 more source

U-Pb zircon in situ dating with LA-MC-ICP-MS using a mixed detector configuration

open access: yesAnais da Academia Brasileira de Ciências, 2012
The LA-MC-ICP-MS method applied to U-Pb in situ dating is still rapidly evolving due to improvements in both lasers and ICP-MS. To test the validity and reproducibility of the method, 5 different zircon samples, including the standard Temora-2, ranging ...
Farid Chemale Jr   +5 more
doaj  

Assessing depleted uranium (DU) contamination of soil, plants and earthworms at UK weapons testing sites [PDF]

open access: yes, 2007
Depleted uranium (DU) weapons testing programmes have been conducted at two locations within the UK. An investigation was therefore carried out to assess the extent of any environmental contamination arising from these test programmes using both alpha ...
Angus B. MacKenzie   +31 more
core   +2 more sources

Stable isotopes in diatom silica [PDF]

open access: yes, 2010
Diatom silica is a form of biogenic opal (SiO2.nH2O, Figure 1) containing oxygen, silicon, carbon and nitrogen isotopes that can be used in lacustrine and marine paleoenvironmental studies.
Leng, Melanie J., Swann, George E.A.
core  

Emerging Analytical Techniques for Rare Earth Element Study: Basic Principles and Cutting-Edge Developments

open access: yesAnalytica
Fundamental research, exploration, extraction, and metallurgical studies of rare earth elements (REEs) require the use of analytical techniques. Recently, emerging developments of analytical instrumentation for REEs have taken place, with some of them ...
Heru Agung Saputra   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy