Results 21 to 30 of about 64,556 (304)

Mineralogy of Sulfides [PDF]

open access: yesElements, 2017
Metal sulphides are the most important group of ore minerals. As shown in this brief introduction, much is known about their compositions, crystal structures, phase relations and paragenesis. Much less is known about their surface chemistry and, in particular, about their biogeochemistry, and about the formation and behaviour of ‘nanoparticle ...
Vaughan, D.J., Corkhill, C.L.
openaire   +3 more sources

MINERAL INCLUSIONS IN THE LATE BRONZE AGE METAL OBJECTS OF SOUTHERN TRANSURALS [PDF]

open access: yesМинералогия, 2021
The paper is devoted to the determination of copper raw material types based on the analysis of mineral inclusions and the composition of metal objects from the Late Bronze Age settlements of the Southern Transurals (XIX–XIII centuries BC).
M.N. Ankushev   +5 more
doaj   +1 more source

Synthesis of Sulfide Perovskites by Sulfurization with Boron Sulfides

open access: yesInorganic Chemistry, 2022
Chalcogenide perovskites (CPs), with the general composition ABX3, where A and B are metals and X = S and Se, have recently emerged as promising materials for application in photovoltaics. However, the development of CPs and their applications has been hindered by the limitations of available preparation methods.
Bystrický, Roman   +4 more
openaire   +2 more sources

Concept and Design of Martian Far-IR ORE Spectrometer (MIRORES)

open access: yesRemote Sensing, 2022
Sulfide ores are a major source of noble (Au, Ag, and Pt) and base (Cu, Pb, Zn, Sn, Co, Ni, etc.) metals and will, therefore, be vital for the self-sustainment of future Mars colonies. Martian meteorites are rich in sulfides, which is reflected in recent
Jakub Ciazela   +19 more
doaj   +1 more source

Chemical reactions and conditions of mineral formation at tailings storage facilities of the Russian Far East

open access: yesГорные науки и технологии, 2021
Cassiterite-sulfide and polymetallic deposits of the Far Eastern Region (FER) were mined by both openpit and underground methods. This resulted in the emerging numerous mine workings and tailings storage facilities (TSFs) (abandoned without reclamation ...
V. P. Zvereva   +2 more
doaj   +1 more source

Lewis acid-promoted hydrofluorination of alkynyl sulfides to generate α-fluorovinyl thioethers [PDF]

open access: yes, 2015
The authors thank EPSRC for supporting this work and DO’H is grateful for a Royal Society Wolfson Research Merit Award.A new method for the preparation of alpha-fluorovinyl thioethers is reported which involves the hydrofluorination of alkynyl sulfides ...
Bello, Davide   +3 more
core   +1 more source

Characterization of Polysulfides, Polysulfanes, and Other Unique Species in the Reaction between GSNO and H2S

open access: yesMolecules, 2019
Glutathione-based products, GSnX, of the reaction of hydrogen sulfide, H2S, S-nitroso glutathione, and GSNO, at varied stoichiometries have been analyzed by liquid chromatography high-resolution mass spectrometry (LC-HRMS) and chemical trapping ...
Murugaeson R Kumar, Patrick J Farmer
doaj   +1 more source

Volcanic sulfides and outgassing [PDF]

open access: yes, 2017
Sulfides are a major potential repository for magmatic metals and sulfur. In more reduced magmas, there may be a dynamic interplay between sulfide liquids and degassing as magmas ascend/erupt.
Mather, Tamsin   +5 more
core   +4 more sources

Effects of sulfur and tin contents on hardness of copper-tin alloy under reduced atmosphere in sintering process

open access: yesMechanical Engineering Journal, 2016
Sintered materials are commonly used in industrial equipment, including bearing components. These materials include bimetals consisting of steel backed sintered bronze lined bushings.
Tomohiro SATO, Yoshimasa HIRAI
doaj   +1 more source

Atomically Dispersed Platinum Modulated by Sulfide as an Efficient Electrocatalyst for Hydrogen Evolution Reaction

open access: yesAdvanced Science, 2021
Catalytically active metals atomically dispersed on supports presents the ultimate atom utilization efficiency and cost‐effective pathway for electrocatalyst design.
Kai Ling Zhou   +9 more
doaj   +1 more source

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