Results 61 to 70 of about 9,785 (280)
Sedimentary Mercury Enrichments as a Tracer of Large Igneous Province Volcanism
Geophysical Monograph Series, Page 247-262., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Lawrence M. E. Percival +3 more
wiley +15 more sources
, 2018 The analysis of stable sulfur isotopes from human and animal tissues is a relatively recent development in archaeological dietary studies. In human diets, sulfur is ultimately derived from soils at the base of the food chain, which are influenced by ...
Olaf Nehlich +3 more
core +1 more source
Advanced Science, EarlyView.An interfacial proton‐relay microenvironment at MoS2‐CuCl heterostructures enables selective O2 activation to 1O2 under neutral conditions. Electron‐deficient sulfur sites mediate proton transfer to Cu‐bound O2, accelerating *OOH hydrogenation while suppressing O─O bond cleavage, achieving stable, efficient pollutant removal.
Qiaoyu Gao +9 more
wiley +1 more source
Angewandte Chemie, EarlyView.A “two‐in‐one” photoreduction strategy enabled by electron‐rich yolk Cd species both remote from and adjacent to sulfur vacancies is delivered to be ultraselective for the reduction of O2 and •CO2− in situ formed on the shell Bi2S3 composition (hole) by water oxidation and oxidative C–C cleavage of various biomass organic acids, furnishing CO with > 99%
Tengyu Liu +5 more
wiley +2 more sources
The petrology and genesis of the Paleoproterozoic mafic intrusion-hosted Co-Cu-Ni deposit at Hietakero, NW Finnish Lapland [PDF]
Bulletin of the Geological Society of Finland, 2018 Cobalt is a highly sought-after metal due to its economic importance in many hightech applications. It is mainly obtained from sedimentary-hosted Cu-Co deposits and magmatic Ni-Cu deposits as a by-product. We describe a recently discovered Co-enriched Cu-
Konnunaho, J.P. +4 more
doaj +1 more source
Stratospheric eruptions from tropical and extra-tropical volcanoes constrained using high-resolution sulfur isotopes in ice cores [PDF]
, 2019 The record of volcanic forcing of climate over the past 2500 years is based primarily on sulfate concentrations in ice cores. Of particular interest are large volcanic eruptions with plumes that reached high altitudes in the stratosphere, as these afford
Moore, Kathryn A. +5 more
core +1 more source
Advanced Science, EarlyView.We develop vacancy‐rich Co9S6.29 precatalysts formed via ultrafine MnS‐induced lattice distortion in mesoporous S‐doped N‐rich hollow carbon nanotubes (CM@SNHCTs). This CM@SNHCT precatalyst is reconstructed into catalytically‐active cathode phases that enable efficient oxygen reduction/evolution reactions (ORR/OER) through dynamic O‐vacancy formation ...
Debarani Devi Khumujam +10 more
wiley +1 more source
Open Geosciences, 2015 A study on sulfur circulation in sediments wascarried out in dam reservoirs (Sulejów, Siemianówka, Turawa)with different hydrological and age characteristicsas well as with a different level of sediment accumulationand organic matter content.Differences ...
Drzewicki Wojciech +3 more
doaj +1 more source
New Frontiers for Sulfur Isotopic Analyses
Procedia Earth and Planetary Science, 2015 AbstractMeasurements of sulfur stable isotope ratios (34S/32S) have suffered in the past from technical difficulties in analyzing low-S materials reducing their use despite their undeniable scientific interest. The measurement of 34S/32S ratios is a powerful tool for deciphering problems such as determining the sources of environmental pollutants, to ...
Fourel, François +2 more
openaire +2 more sources
Advanced Science, EarlyView.Cu‐MXene interfacial catalysts provide a promising platform for electrochemical NOx upcycling to ammonia. The synergy between Cu active sites and conductive, surface‐tunable MXene supports promotes NOx adsorption, intermediate stabilization, and selective NH3 formation while suppressing competing hydrogen evolution, offering a route toward sustainable ...
Hafiz Muhammad Adeel Sharif +5 more
wiley +1 more source