Results 91 to 100 of about 40,961 (371)
Strontium isotope stratigraphy of the Pelotas Basin
Brazilian Journal of Geology, 2014 Dados da razao isotopica de estroncio foram obtidos a partir da analise de conchas de foraminiferos recuperadas dos depositos terciarios da Bacia de Pelotas visando o refinamento do arcabouco cronoestratigrafico dessa secao. Este artigo representa a primeira abordagem a obtencao de idades numericas para esses estratos.
Geise de Santana dos Anjos Zerfass +4 more
openaire +1 more source
Topology‐Aware Machine Learning for High‐Throughput Screening of MOFs in C8 Aromatic Separation
Advanced Intelligent Discovery, EarlyView.We screened 15,335 Computation‐Ready, Experimental Metal–Organic Frameworks (CoRE‐MOFs) using a topology‐aware machine learning (ML) model that integrates structural, chemical, pore‐size, and topological descriptors. Top‐performing MOFs exhibit aromatic‐enriched cavities and open metal sites that enable π–π and C–H···π interactions, serving as ...
Yu Li, Honglin Li, Jialu Li, Wan‐Lu Li
wiley +1 more source
Barium isotopic composition of mainstream silicon carbides from Murchison : constraints for s-process nucleosynthesis in asymptotic giant branch stars [PDF]
, 2014 We present barium, carbon, and silicon isotopic compositions of 38 acid-cleaned presolar SiC grains from Murchison. Comparison with previous data shows that acid washing is highly effective in removing barium contamination.
Bisterzo, Sara +15 more
core +2 more sources
GeodermaUnderstanding the spatial distribution of strontium isotopes in plants or other archives within a region is crucial for various fields, including archaeology, environmental studies, food sciences and forensic science. This study aims to create a detailed
Amanda Sengeløv +17 more
doaj +1 more source
Land Use Influence on the Characteristics of Groundwater Inputs to the Great Bay Estuary, New Hampshire [PDF]
, 2004 This research examines the sources and factors affecting nutrient-laden groundwater discharge to the Great Bay Estuary. To further understand this relationship, examination of groundwater residence time, a review of historic land uses, and nitrate source
Bacca-Cortes, Gabriel F. +2 more
core +2 more sources
Bose-Einstein condensation of 86Sr
, 2010 We report on the attainment of Bose-Einstein condensation of 86Sr. This isotope has a scattering length of about +800 a0 and thus suffers from fast three-body losses.
Florian Schreck +4 more
core +1 more source
The origin of the warm groundwater near Lake Mývatn, NE Iceland, traced by stable isotopes [PDF]
E3S 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
Measurement of Strontium Isotopic Ratio in Natural Matrix Sample Containing Strontium-90 [PDF]
Journal of Nuclear Science and Technology, 2008 Strontium isotopic ratios in a natural matrix reference material (IAEA-A-12) containing strontium-90 were measured by means of a thermal ionization mass spectrometer with a multi-collector system (MC-TIMS). There was significant difference in the measured isotopic ratios between the IAEA-A-12 and a standard reference material of the strontium isotopes (
Satoshi Fukutani +2 more
openaire +1 more source
Box Models of Volatile Cycles over the Entire Phanerozoic [PDF]
, 2006 Three stand-alone geochemical box models have been developed to simulate globally coupled biogeochemical cycles. These models reflect the evolution of the participating biotic and abiotic constituents in marine and terrestrial environments, including the
Bartdorff, Oliver
core
, 2011 State-of-the-art {\em ab initio} techniques have been applied to compute the potential energy curves for the SrYb molecule in the Born-Oppenheimer approximation for the ground state and first fifteen excited singlet and triplet states within the coupled ...
Amiot +80 more
core +1 more source