Results 11 to 20 of about 7,353 (249)

Presenting the Compendium Isotoporum Medii Aevi, a Multi-Isotope Database for Medieval Europe

open access: yesScientific Data, 2022
Measurement(s) Isotopes Technology Type(s) Mass Spectrometry Factor Type(s) Carbon isotopes • nitrogen isotopes • sulfur isotopes • oxygen isotopes • strontium isotopes Sample Characteristic - Organism Humans • Animals • Plants Sample Characteristic ...
Carlo Cocozza   +4 more
doaj   +1 more source

Sulfur Stable Isotope Discrimination in Rice: A Sulfur Isotope Mass Balance Study

open access: yesFrontiers in Plant Science, 2022
The use of sulfur (S) stable isotopes to study S metabolism in plants is still limited by the relatively small number of studies. It is generally accepted that less S stable isotope discrimination occurs during sulfate (SO42–) uptake. However, S metabolism and allocation are expected to produce separations of S stable isotopes among the different plant
Viviana Cavallaro   +6 more
openaire   +3 more sources

Sulfur isotopes reveal agricultural changes to the modern sulfur cycle

open access: yesEnvironmental Research Letters, 2022
The environmental fates and consequences of intensive sulfur (S) applications to croplands are largely unknown. In this study, we used S stable isotopes to identify and trace agricultural S from field-to-watershed scales, an initial and timely step ...
Anna L Hermes   +2 more
doaj   +1 more source

Analysis of Sulfur Isotope Composition of Gypsum Samples by Elemental Analyzer-Isotope Mass Spectrometry

open access: yesYankuang ceshi, 2020
BACKGROUND The conventional method for the measurement of sulfur isotopes in sulfate includes mainly barite conversion coupled with dual-inlet SO2 methods. These methods are facile and reliable.
GAO Jian-fei   +4 more
doaj   +1 more source

Sulfur isotopes in Finnish nickel-copper occurrences [PDF]

open access: yesBulletin of the Geological Society of Finland, 1980
The sulfur isotope composition of the Hitura, Kotalahti and Kylmäkoski Ni-Cu ores was analyzed. The results have been compared with earlier sulfur isotope analyses of the Vammala, Laukunkangas and Oravainen Ni-Cu occurrences. Altogether 183 analyses were
H. Papunen, M. Mäkelä
doaj   +1 more source

Geochemical transformations of sulfur in salt lakes (Transbaikalia) [PDF]

open access: yesE3S Web of Conferences, 2023
The water column in brackish and saline lakes hosts various forms of sulfur including sulfide (hydrosulfide), elemental, thiosulfate, and sulfate sulfur.
Borzenko Svetlana
doaj   +1 more source

Nature of Isomerism in Exotic Sulfur Isotopes [PDF]

open access: yesPhysical Review Letters, 2015
We clarify the origin of the anomalously hindered $E2$ decay from the $4^+_1$ level in $^{44}$S by performing a novel many-body analysis in the shell model. Within a unified picture about the occurrence of isomerism in neutron-rich sulfur isotopes, the $4^+_1$ state is demonstrated to be a $K=4$ isomer dominated by the two-quasiparticle configuration ...
Utsuno, Yutaka   +4 more
openaire   +3 more sources

A Critical Look at the Combined Use of Sulfur and Oxygen Isotopes to Study Microbial Metabolisms in Methane-Rich Environments

open access: yesFrontiers in Microbiology, 2018
Separating the contributions of anaerobic oxidation of methane and organoclastic sulfate reduction in the overall sedimentary sulfur cycle of marine sediments has benefited from advances in isotope biogeochemistry.
Gilad Antler   +3 more
doaj   +1 more source

Holocene Spatiotemporal Redox Variations in the Southern Baltic Sea

open access: yesFrontiers in Earth Science, 2021
Low oxygen conditions in the modern Baltic Sea are exacerbated by human activities; however, anoxic conditions also prevailed naturally over the Holocene. Few studies have characterized the specific paleoredox conditions (manganous, ferruginous, euxinic)
Dalton S. Hardisty   +5 more
doaj   +1 more source

Microbial communities and their roles in the Cenozoic sulfurous oil reservoirs in the Southwestern Qaidam Basin, Western China

open access: yesScientific Reports, 2023
The latest discovery of sulfurous natural gas marked a breakthrough in the Cenozoic natural gas exploration in the southwestern margin of Qaidam Basin. The 16S rRNA analyses were performed on the crude oil samples from H2S-rich reservoirs in the Yuejin ...
Yue Jiao   +5 more
doaj   +1 more source

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