Results 31 to 40 of about 83,496 (259)
The Morphological Characteristics of Authigenic Pyrite Formed in Marine Sediments
Journal of Marine Science and Engineering, 2022 Pyrites are widely distributed in marine sediments, the morphology of which is applied as a proxy to infer the redox conditions of bottom water, and identify diagenetic stages and hydrocarbon leakage activities.
Jingyi Chang, Yuanyuan Li, Hailong Lu
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Magnetism of sodium superoxide [PDF]
, 2013 By combining first-principles electronic-structure calculations with the model Hamiltonian approach, we systematically study the magnetic properties of sodium superoxide (NaO2), originating from interacting superoxide molecules.
Mazurenko, V. V. +2 more
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DFT Study into the Influence of Carbon Material on the Hydrophobicity of a Coal Pyrite Surface
Molecules, 2019 From the macroscopic point of view, the hydrophilicity of symbiotic carbon pyrite is weakened overall compared to that of pure pyrite. It is very important to explain the impact of elemental carbon accreted on a pyrite surface on the surface’s ...
Peng Xi +3 more
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Microbiology Indonesia, 2020 Given the low-cost and eco-friendly method, biotechnology has been widely utilized in industries as an alternative for physical and chemical processes, including in the biomining process (e.g., bioflotation and biobeneficiation).
Edy Sanwani +5 more
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Pyrite/H2O2/hydroxylamine system for efficient decolorization of rhodamine B
Water Science and Technology, 2021 To improve the efficiency of the Fe(II)/Fe(III) cycle and continuous reactivity of pyrite, a pyrite/H2O2/hydroxylamine (HA) system was proposed to treat rhodamine B (RhB).
Guang-Jun He +5 more
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Phase Stability and Thermoelectric Properties of the Mineral FeS2: An Ab Initio Study
, 2013 First principles calculations were carried out to study the phase stability and thermoelectric properties of the naturally occurring marcasite phase of FeS$_2$ at ambient condition as well as under pressure. Two distinct density functional approaches has
Appalakondaiah, S. +4 more
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Desulphurization of coals of different ranks in the presence of slimes by reverse flotation
Energy Reports, 2019 In this paper, the flotation separation of pyrite from sub-bituminous and meta-bituminous coals in the presence of slimes was investigated. The sub-bituminous coal and the meta-bituminous coal have significant differences in their surface properties ...
You Zhou +5 more
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Sulphur and Carbon Isotopes as Tracers of Past Sub-seafloor Microbial Activity [PDF]
, 2019 Microbial life below the seafloor has changed over geological time, but these changes are often not obvious, as they are not recorded in the sediment.
Brunner, Benjamin +4 more
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Metals, 2017 The effect of pyrite and the role of ammonium alcohol polyvinyl phosphate (AAPP) during gold leaching in ammoniacal thiosulfate solutions were investigated using pure gold foils.
Xiaoliang Liu +7 more
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Extent and duration of marine anoxia during the Frasnian– Famennian (Late Devonian) mass extinction in Poland, Germany, Austria and France [PDF]
, 2004 – The intensity and extent of anoxia during the two Kellwasser anoxic events has been investigated in a range of European localities using amultidisciplinary approach (pyrite framboid assay, gamma-ray spectrometry and sediment fabric analysis).
Bond, D.P.G., Racki, G., Wignall, P.B.
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