Results 111 to 120 of about 277,305 (372)
Advanced Functional Materials, EarlyView.Ru‐substituted hexagonal perovskite SrMnO3, featuring face‐shared oxygen species, is designed as an effective heterogeneous catalyst for the aerobic oxidation of sulfides. The catalyst demonstrates high selectivity to sulfones (>99%) under mild reaction conditions (≥30 °C). Ru substitution promotes oxygen vacancy formation of face‐shared oxygen species
Keiju Wachi +5 more
wiley +1 more source
Tostación de sulfuros por reducción carbotérmica
Dyna, 2016 El proceso de reducción carbotérmica es una reducción directa de sulfuros. Permite realizar una tostación en donde se obtienen concentraciones mayores de metales como molibdeno, empleando un agente reductor (en este caso, el carbón C) y un captador de ...
Ivana Marcela Orozco Santander +3 more
doaj +1 more source
Известия Томского политехнического университета: Инжиниринг георесурсов, 2020 The relevance of the research consists in detailed mineralogical studies with a focus on electron probe microanalysis provide information on the composition of ores and the form of occurrence of noble metals (platinum groups), rare and rare earth ...
Vladimir G. Stepanets +5 more
doaj +1 more source
, 2010 The fragile structure of chondritic-porous interplanetary dust particles (CP- IDPs) and their minimal parent-body alteration have led researchers to believe these particles originate in comets rather than asteroids where aqueous and thermal alteration ...
A.J. Westphal +57 more
core +1 more source
High‐Entropy Magnetism of Murunskite
Advanced Functional Materials, EarlyView.The study of murunskite (K2FeCu3S4) reveals that its magnetic and orbital order emerges in a simple I4/mmm crystal structure with complete disorder in the transition metal positions. Mixed‐valence Fe ions randomly occupy 1/4 of the tetrahedral sites, with the remaining 3/4 being filled by non‐magnetic Cu+ ions.
Davor Tolj +18 more
wiley +1 more source
Frontiers in Chemistry, 2020 Mineral concentrators are becoming increasingly aware of the importance of the quality of the water that they feed into their milling and flotation circuits.
Malibongwe Shadrach Manono +2 more
doaj +1 more source
Spitzer IRS Spectroscopy of the 10 Myr-old EF Cha Debris Disk: Evidence for Phyllosilicate-Rich Dust in the Terrestrial Zone [PDF]
, 2011 We describe Spitzer IRS spectroscopic observations of the 10 Myr-old star, EF Cha. Compositional modeling of the spectra from 5 {\mu}m to 35 {\mu}m confirms that it is surrounded by a luminous debris disk with LD/L\star ~ 10-3, containing dust with ...
Currie, Thayne +4 more
core +4 more sources
Boosting Polysulfide Conversion on Fe‐Doped Nickel Diselenide Toward Robust Lithium–Sulfur Batteries
Advanced Functional Materials, EarlyView.This work reports an advanced functional material based on Fe‐doped nickel diselenides toward robust lithium–sulfur batteries, demonstrating that Fe‐rich cores and surface doping enhance the density of states at the Fermi level and introduce unpaired electrons for the improvement of the LiPS adsorption and catalytic conversion. Abstract Sulfur offers a
Junshan Li +11 more
wiley +1 more source
The Role of Sulfide Oxidation Impairment in the Pathogenesis of Primary CoQ Deficiency
Frontiers in Physiology, 2017 Coenzyme Q (CoQ) is a lipid present in all cell membranes. One of the multiple metabolic functions of CoQ is to transport electrons in the reaction catalyzed by sulfide:quinone oxidoreductase (SQOR), the first enzyme of the oxidation pathway of sulfides (
Catarina M. Quinzii +6 more
doaj +1 more source
High-Capacity Anode Materials for All-Solid-State Lithium Batteries
Frontiers in Energy Research, 2020 This mini review article summarizes the recent progress of the all-solid-state lithium ion batteries (LIBs) with high-capacity anodes. Although the theoretical capacity of silicon (Si) is exceptionally high, the large volume change during cycling is a ...
Reona Miyazaki
doaj +1 more source