Results 81 to 90 of about 31,311 (333)

Properties of metastable alkaline-earth-metal atoms calculated using an accurate effective core potential

open access: yes, 2003
The first three electronically excited states in the alkaline-earth-metal atoms magnesium, calcium, and strontium comprise the (nsnp) triplet P^o_J (J=0,1,2) fine-structure manifold.
A. Dalgarno   +22 more
core   +1 more source

Biochar in the circular bioeconomy: a bibliometric analysis of technologies, applications, and trends

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biochar has attracted considerable attention in recent years for its wide‐ranging applications, particularly its role in carbon sequestration as a strategy to mitigate greenhouse gas emissions. Its emerging uses within the circular bioeconomy also position it as a valuable tool for environmental management, and ongoing research continues to ...
Jean Agustin Velasquez‐Pinas   +6 more
wiley   +1 more source

Neodymium isotopes in modern human dental enamel: An exploratory dataset for human provenancing

open access: yesData in Brief, 2021
This collection presents data on neodymium isotopes from modern dental elements (third molars) of 47 individuals born and raised in the Netherlands, Grenada, Curaçao, Bonaire, Columbia and Iceland.
Esther Plomp
doaj  

The origin of the warm groundwater near Lake Mývatn, NE Iceland, traced by stable isotopes [PDF]

open access: yesE3S Web of Conferences, 2019
The origin of the warm groundwater which feeds Lake Mývatn is unknown, but it has been affected by volcanic episodes as well as geothermal activity and utilisation.
Óskarsson Finnbogi
doaj   +1 more source

Frontiers of Synchrotron Methods for Actinide Science

open access: yesChemistry–Methods, EarlyView.
This article explores the application of synchrotron radiation techniques ‐ XAS, XES, HERFD, RIXS, and XRD ‐ to investigate actinide materials. It provides insights into electronic structures, oxidation states, and phase transitions, emphasizing the transformative role of these techniques in advancing nuclear materials research, environmental safety ...
Damien Prieur   +7 more
wiley   +1 more source

Strontium Isotope Effects in Ligand Exchange Reaction [PDF]

open access: yesJournal of Nuclear Science and Technology, 2002
Strontium isotope effects in ligand exchange reaction were investigated. Strontium chloride was extracted into dicyclohexano-18-crown-6/chloroform from the aqueous phase of 4–9MHCl/H2O. The distribution ratios of strontium increased with HCl concentrations.
Shibahara, Y   +3 more
openaire   +2 more sources

From Stonehenge to the Gherkin [PDF]

open access: yes, 2010
Isotope analysis of tooth enamel from humans is a rapidly developing technique for looking at the childhood origins of people from the past. It provides a direct measurement from the person and does not depend upon the assumption that artefacts within ...
Evans, Jane
core  

Carbon Rich Extremely Metal Poor Stars: Signatures of Population-III AGB stars in Binary Systems

open access: yes, 2007
We use the Cambridge stellar evolution code STARS to model the evolution and nucleosynthesis of zero-metallicity intermediate-mass stars. We investigate the effect of duplicity on the nucleosynthesis output of these systems and the potential abundances ...
Lau, H. B.   +2 more
core   +2 more sources

Strontium isotope compositions of river waters as records of lithology-dependent mass transfers : the Garonne river and its tributaries (SW France) [PDF]

open access: yes, 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

Wetlands as environments of early human occupation: A new classification for freshwater palaeowetlands

open access: yesThe Depositional Record, EarlyView.
A new classification for inland freshwater palaeowetlands to be used in the field or core laboratory by sedimentologists, providing examples from the Guadix Basin (southern Spain). Abstract Present wetlands have proven to be delicate, biodiverse ecosystems, that are natural sinks for CO2 and act as good indicators for climate changes.
S. Pla‐Pueyo   +1 more
wiley   +1 more source

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