Results 121 to 130 of about 277,305 (372)
Hydrometallurgy of the delta sulfide ores, first stage report [PDF]
, 1986 This report presents the results of hydrometallurgical research carried out from September 16, 1985 to June 30, 1986 on metals recovery from complex sulfide ores from the Delta deposit near Tok, Alaska.
Chous, Kuo-tung, Letwoski, F., Rao, P.D.
core
Advanced Functional Materials, EarlyView.A two‐step DNA metallization process is presented for the modular assembly of metal sulfide nanoparticles (NPs) on MoS2, with nanoscale control over their separation and ability to concomitantly assemble different kind of NPs. This allowed to tailor the photoinduced electrical response of phototransistors to different wavelengths, according to the ...
Kai Chen +3 more
wiley +1 more source
High Thermoelectric Performance in Low‐Cost Cu8SiSxSe6‐x Argyrodite
Advanced Functional Materials, EarlyView.This study discovers the great potential of Cu8SiSxSe6‐x argyrodites as new, low‐cost, Te‐free thermoelectric materials. The proposed defect scheme suppresses the phase transition, enhances the weighted mobility and optimizes the grain boundary contacts.
Taras Parashchuk +7 more
wiley +1 more source
Environmental hazard assessment of the Uluk-Bar gold deposit (Southern Urals)
Известия Томского политехнического университета: Инжиниринг георесурсовRelevance. Due to the maximum allowable concentrations of heavy metals and metalloids exceeding in the surface waters of the Avzyan gold region, possible sources of toxic elements are determined, which is important for combating pollution in ore areas ...
Gulfiya M. Kazbulatova +1 more
doaj +1 more source
Kinetic model of carbonate dissolution in Martian meteorite ALH84001 [PDF]
, 2003 The magnetites and sulfides located in the rims of carbonate globules in the Martian meteorite ALH84001 have been claimed as evidence of past life on Mars.
Humayun, Munir, Kopp, Robert E.
core +1 more source
Na2S Presodiation Enables Long Cycling Anode‐Free Sodium Batteries via Rapid Spontaneous Reactions
Advanced Functional Materials, EarlyView.Na2S with high sodium content is utilized as a sodium replenishment material for AFSBs. The spontaneous reaction between polysulfides and Na3−xV2(PO4)3, complete conversion from Na2S to sulfur is achieved under low voltage and catalyst‐free conditions. With the assistance of the additionally supplied sodium ions, the Na2S@NVP||Zn AFSBs retain 70.8% of ...
Yujie Chen +5 more
wiley +1 more source
The importance of mineralogical knowledge in the sustainability of artisanal gold mining: a mid-south Peru case [PDF]
, 2019 Mineralogy and gold processing techniques from several mining areas of the Nazca-Ocoña gold belt, Mid-South Peru, were investigated to assess the efficiency of gold extraction methods in relation to their mineralogy.
Alfonso Abella, María Pura +7 more
core +2 more sources
Advanced Functional Materials, EarlyView.Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida +16 more
wiley +1 more source
The effect of manganese and silicon additions on the corrosion resistance of a polycrystalline nickel-based superalloy [PDF]
arXiv, 2020 The service lives of nickel superalloys are often limited by environmental degradation. The present study compares oxidation, sulfidation and hot corrosion at 750C of three variants of a polycrystalline superalloy: a baseline alloy, a variant containing 1wt% Mn and one containing 0.5wt% Si.
arxiv
, 2013 We report ab-initio calculations of the stability, lattice dynamics, electronic and thermoelectric properties of cubic La3-yX4 (X=S,Se,Te) materials in view of analyzing their potential for thermoelectric applications.
Jund, Philippe +2 more
core +2 more sources