Results 21 to 30 of about 35,448 (218)

Distribution of gold derived from hydrothermal fluids on the modern seafloor and its impact on the gold budget of seawater

open access: yesFrontiers in Marine Science, 2023
The modern seafloor hydrothermal system plays a significant role in the cycling of energy and mass between the internal and external layers of the oceanic crust and upper mantle.
Wei Huang   +7 more
doaj   +1 more source

Electron self-exchange activation parameters of diethyl sulfide and tetrahydrothiophene

open access: yesBeilstein Journal of Organic Chemistry, 2013
Electron transfer between the title compounds and their radical cations, which were generated by photoinduced electron transfer from the sulfides to excited 2,4,6-triphenylpyrylium cations, was investigated by time-resolved measurements of chemically ...
Martin Goez, Martin Vogtherr
doaj   +1 more source

ENRICHMENT OF MASSIVE SULFIDES FROM THE SEMENOV HYDROTHERMAL CLUSTER (MID-ATLANTIC RIDGE) IN BARITE: A RESULT OF E-MORB INVOLVEMENT AND MAGMATIC CONTRIBUTION [PDF]

open access: yesМинералогия
The paper reviews and compares the barite findings in hydrothermal fields of the midoceanic ridges. The genetic significance of barite is considered for the Semenov hydrothermal sulfide cluster associated with an oceanic core complex (OCC) at 13°30′ N of
I.Yu. Melekestseva   +2 more
doaj   +1 more source

Sulfide mineralization, native gold and its geochemical connections in the Riphean deposits of the Avzyan ore-bearing region (the Southern Urals)

open access: yesЛитосфера, 2018
In the Avzyan ore-bearing region the sulfides from the low-sulfide gold-quartz deposits (Ulyuk-Bar, Kurgashly) are characterized by higher concentrations of As, Co, Ni, Cu, Pb in comparison with sulfides from sediments outside of ore-bearing zones.
Sergei V. Michurin   +5 more
doaj   +1 more source

SULFUR SOURCES OF SULFIDES OF THE AK-SUG CU-AU PORPHYRY DEPOSIT, EASTERN TUVA [PDF]

open access: yesМинералогия, 2019
The paper presents the S isotopic composition of sulfides from the Ak-Sug Au-Cu-porphyry deposit hosted by Early Proterozoic magmatic rocks. The S isotopic composition of sulfides varies from +1.0 to +3.2 ‰: +2.5 to +3.2 ‰ for molybdenite-I, +1.0 to +3.1
R.V. Kuzhuget   +2 more
doaj   +1 more source

Experimental Research on Environmental Friendly Gold Leaching of a Refractory Gold Ore in Laos

open access: yesKuangchan zonghe liyong, 2022
The gold ore type of the gold mining in Laos is altered rock. Gold is the only recyclable element in the ore. Metal minerals are mainly iron sulfides. Part of the gold is wrapped in sulfide, which belongs to the refractory gold ore.
Weigang Kang, Jingyu Chen
doaj   +1 more source

Role of Sulfur Compounds in Vegetable and Mushroom Aroma

open access: yesMolecules, 2022
At the base of the food pyramid is vegetables, which should be consumed most often of all food products, especially in raw and unprocessed form. Vegetables and mushrooms are rich sources of bioactive compounds that can fulfill various functions in plants,
Monika A. Marcinkowska, Henryk H. Jeleń
doaj   +1 more source

Effect of Ca/Mg on Distribution and Morphology of MnS Inclusions in 45MnVS Non-Quenched and Tempered Steel

open access: yesMetals, 2022
The influence of Ca treatment, Mg treatment and Ca–Mg combined treatment on the inclusions in 45MnVS non-quenched and tempered steel were studied in the present work.
Lijuan Su   +7 more
doaj   +1 more source

Quantitative and Qualitative Evaluation of Non-Metallic Inclusions in High-Silicon Steel after Hot Rolling [PDF]

open access: yesArchives of Metallurgy and Materials
This paper presents an analysis of non-metallic inclusions occurring in high-silicon steels containing about 3% Si of terms of their type, volume fraction and morphology.
K. Ścibisz, J. Krawczyk
doaj   +1 more source

Percolation Behavior of a Sulfide Electrolyte–Carbon Additive Matrix for Composite Cathodes in All-Solid-State Batteries

open access: yesBatteries, 2023
To achieve high energy densities with sufficient cycling performance in all-solid-state batteries, the fraction of active material has to be maximized while maintaining ionic and electronic conduction throughout the composite cathode.
Elias Reisacher   +2 more
doaj   +1 more source

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