Results 111 to 120 of about 50,853 (257)

Preparation and Identification of Heavy Minerals for Archaeometrical Studies: Villa of Fiumana (FC), Italy

Journal of Raman Spectroscopy, EarlyView.
This paper presents a new protocol for the laboratory preparation of archaeological samples. Ceramics that have been hand‐crafted using different sediments as raw materials were collected in a Roman Villa sited in Fiumana (FC), Italy. This method aims at concentrating and analysing heavy minerals in the 15–250 μm grain size fraction, studying the ...
S. Andò, G. Vezzoli, M. Barbarano, L. Fornasini, L. Saviane, R. Villicich, D. Bersani   +6 more
wiley   +1 more source

ZONATION OF FORM AND COMPOSITION OF PYRITE CRYSTALS OF THE BEREZOVSKY GOLD DEPOSIT (URALS) [PDF]

Минералогия, 2018
Morphology, zonation and composition of pyrite crystals from quartz veins, beresites and listvenites of the Berezovsky gold deposit are examined. During the crystallization, the pyrite forms changed following a relatively simple scheme {111} → {111}+{100}
V.I. Popova, D.A. Artemyev, V.A. Kotlyarov   +2 more
doaj  

Proteomics Reveal Enhanced Oxidative Stress Responses and Metabolic Adaptation in Acidithiobacillus ferrooxidans Biofilm Cells on Pyrite

Frontiers in Microbiology, 2019
Reactive oxygen species (ROS) cause oxidative stress and growth inhibition by inactivation of essential enzymes, DNA and lipid damage in microbial cells.
Sören Bellenberg, Dieu Huynh, A. Poetsch, W. Sand, M. Vera   +4 more
semanticscholar   +1 more source

Evaluation of a modified sequential P extraction protocol: Quantification of Fe(II)‐P as a separate phase in seven different freshwater sediments

Limnology and Oceanography: Methods, EarlyView.
Abstract Sequential phosphorus (P) extraction (SPE) is a well‐established and widely applied method for quantitatively and qualitatively determining the critical nutrient P in freshwater sediments. It allows the estimation of P bioavailability and facilitates the evaluation of the long‐term effects of eutrophication mitigation measures.
Sina Haasler, Simon David Herzog, David W. O'Connell, Worachart Wisawapipat, Qian Wang, Michael Hupfer, Jéssica Papera, Theis Kragh, Anna‐Marie Klamt, Kasper Reitzel   +9 more
wiley   +1 more source

Flotation separation of pyrite and carbonate minerals from a carlin-type gold deposit in Guizhou by a new combined collector and its adsorption mechanism

Scientific Reports
Flotation is the most common method for effective separation of pyrite and carbonate minerals from Carlin-type gold deposits. The effect of conventional xanthate collector on flotation of a Carlin-type gold mine in Guizhou province is poor, and it can ...
Zhixiong Zhu, Guanghua Nie, Qiang Deng, Biyang Tuo, Tingsheng Qiu   +4 more
doaj   +1 more source

Pyrite deposits at Horseshoe Bay, Latouche Island, Alaska [PDF]

, 1956
Francis Adrien Stejer
openalex   +1 more source

ON THE ESTIMATION OF SULPHUR IN PYRITES.¹ [PDF]

Journal of the American Chemical Society, 1889
n ...
openaire   +4 more sources

Non‐van der Waals Layered Molybdenum Sulfide Wires with Perpendicular Layer Stacking and Tunable Interlayer Domains

Small Structures, EarlyView.
A quasi‐layered (NH4)nMoSx·δH2O wire featuring longitudinal stacking and periodically exposed interlayer regions is synthesized under ambient conditions. Stabilized by ammonium and water, this structure enables reversible interlayer spacing modulation while maintaining crystallinity.
Hyeon‐Sik Jang, Seo Hyeon Moon, Jae‐Hyun Lee, Ji‐Won Park, Tae‐Wook Kim, Sukang Bae, Seoung‐Ki Lee   +6 more
wiley   +1 more source

Facile Synthesis of Magnetite‐Rich Core‐Shell Catalysts with Tunable Nanostructure and Atomic Composition from Solid Waste for Superior Water–Gas Shift Reaction

Small Structures, EarlyView.
This study aims to convert red mud (RM) into Fe3O4‐based core‐shell nanostructured catalysts for the high‐temperature water‐gas shift reaction, with the shell properties, including elemental composition, porosity, and thickness, being highly tunable.
Binbin Qian, Xue Wang, Sasha Yang, Yiling Luo, Xiaoju Wen, Lei Shi, Yueyang Hu, Qirui Guo, Zongtang Liu, Jun Lu, Lian Zhang   +10 more
wiley   +1 more source

Contributions to economic geology, 1921, Part I, Metals and nonmetals except fuels--Pyrite at the Haile mine, Kershaw, South Carolina, with a note on pyritization at the Brewer mine, near Jefferson [PDF]

, 1922
Frank Charles Schrader
openalex   +1 more source