Results 51 to 60 of about 43,392 (192)
Limnology and Oceanography, EarlyView.Abstract Ocean alkalinity enhancement (OAE) is a widely considered marine CO2 removal method. Ocean alkalinity enhancement works by converting seawater CO2 into HCO3−$$ {\mathrm{HCO}}_3^{-} $$ and CO32−$$ {\mathrm{CO}}_3^{2-} $$ by electrochemical methods or the addition of alkaline minerals.
Damon Britton +2 more
wiley +1 more source
Nickel extraction from olivine: Effect of carbonation pre-treatment
, 2015 In this work, we explore a novel mineral processing approach using carbon dioxide to promote mineral alterations that lead to improved extractability of nickel from olivine ((Mg,Fe)2SiO4). The precept is that by altering the morphology and the mineralogy
R. Santos +5 more
semanticscholar +1 more source
steel research international, EarlyView.This study investigates the reduction of iron ore sinter in hydrogen and water vapor‐containing gas. It reveals differences in reduction behavior between blast furnace center and wall regions. Results highlight the role of temperature, gas composition, and microstructure in reduction efficiency.
Ahmed Abdelrahim +3 more
wiley +1 more source
, 2001 Compositions of ~2500 spinel-olivine pairs and 400 melt inclusion-spinel pairs have been analysed from 36 igneous suites from oceanic, arc and intraplate tectonic settings.
Vadim Kamenetsky, A. Crawford, S. Meffre
semanticscholar +1 more source
Twinning in olivine group revisited
European Journal of Mineralogy, 2017 The reported occurrence frequency of twinning in olivine is at odd with the degree of atomic restoration across the composition surface obtained by the analysis of the pseudo-eigensymmetry of the crystallographic orbits: the {0 3 1} twin should be the most frequent one, whereas it is reported as the rarer. The possibility of incorrect indexing, already
Massimo Nespolo +3 more
openaire +5 more sources
Sand‐Hungry: Accumulations, Erosions, and the Self‐Feeding Logic of Beach Renourishment
Antipode, EarlyView.Abstract This paper interrogates the metaphor of beach renourishment to show how this common coastal engineering practice feeds its own logic. In a coastal town in Florida, renourishment (the practice of dredging sand to combat erosion) shores up the coastline materially and, importantly, politically, as a wider beachfront protects coastal property ...
Kimberly Schoemaker
wiley +1 more source
The FEBS Journal, EarlyView.Schlikker et al. characterized the conversion of pyridoxal to pyridoxamine under conditions mimicking the ones likely existing at the origin of metabolism. These conditions triggered nitrogen incorporation into amino acids in solution before the origins of enzymes.
Mariarita Bertoldi, Gianluca Molla
wiley +1 more source
Geostandards and Geoanalytical Research, EarlyView.Key Points An analytical strategy for determining boron isotope ratios in Ca‐amphiboles using LA‐MC‐ICP‐MS is presented. Accurate δ11B results can be achieved using the USGS BHVO‐2G glass as the calibrating reference material. Two proposed Ca‐amphibole RMs exhibit good homogeneity with δ11B intermediate measurement precision of 2.86‰ and 3.96 (2s). The
Enrico Cannaò +3 more
wiley +1 more source
4. On the Action of Carbonic Acid Water on Olivine [PDF]
, 1889 Alexander Johnstone
openalex +1 more source
Phase Equilibria Analysis for Metacarbonate With Applications to Zoned Calc‐Silicate Aureoles
Journal of Metamorphic Geology, EarlyView.ABSTRACT Carbonate rocks react with infiltrating hydrothermal fluids to produce zoned calcsilicate assemblages in contact aureoles. Petrogenetic grids provide valuable insights into phase relations, metamorphic temperature (T) and the fluid composition (X) of the metacarbonate systems, as well as semi‐quantification of the prograde decarbonation at ...
Zhenhao Zhou, Xu Chu
wiley +1 more source