Results 31 to 40 of about 118,822 (346)

Quantitative Research for Global Iron Ore Breakeven Operating Cost Based on BIF-type Enriched Mineralization Characteristics

open access: yesYankuang ceshi, 2017
The benchmark comparative price between global seaborne iron ore and Chinese domestic iron ore is based on free on board (FOB) or cost, insurance and freight (CIF), resulting in imprecise market pressure price estimation for Chinese domestic iron ore ...
WANG Wei-ping, CHEN Yu-chuan
doaj   +1 more source

Characterization and mapping of surface physical properties of Mars from CRISM multi-angular data: application to Gusev Crater and Meridiani Planum [PDF]

open access: yes, 2015
The analysis of the surface texture from the particle (grain size, shape and internal structure) to its organization (surface roughness) provides information on the geological processes.
Ceamanos, X.   +7 more
core   +3 more sources

High-Temperature Mineral Formation after Firing Clay Materials Associated with Mined Coal in Teruel (Spain) [PDF]

open access: yes, 2020
The production of porcelain stoneware has experienced a considerable increase. Therefore, it was necessary to undertake an investigation that would allow knowing the mineralogical evolution that porcelain stoneware undergoes during the firing process, as
Jordán Vidal, Manuel Miguel   +3 more
core   +2 more sources

Significance of interface barrier at electrode of hematite hydroelectric cell for generating ecopower by water splitting

open access: yesInternational Journal of Energy Research, 2019
Recent increase in energy demand and associated environmental degradation concern has triggered more research towards alternative green energy sources. Eco‐friendly energy in facile way has been generated from abundantly available iron oxides using only ...
Shipra Jain   +4 more
semanticscholar   +1 more source

Deepening inside the pictorial layers of Etruscan sarcophagus of Hasti Afunei: An innovative micro-sampling technique for Raman/SERS analyses [PDF]

open access: yes, 2019
The Hasti Afunei sarcophagus is a large Etruscan urn, made up of two chalky alabaster monoliths. Dated from the last quarter of the third century BC, it was found in 1826 in the small town of Chiusi (Tuscany- Il Colle place) by a landowner, Pietro Bonci ...
Bianco, Armandodoriano   +7 more
core   +1 more source

Widespread hematite at high latitudes of the Moon

open access: yesScience Advances, 2020
Moon orbital data analysis reveals the unexpected presence of Hematite, an oxidization product under highly reducing conditions. Hematite (Fe2O3) is a common oxidization product on Earth, Mars, and some asteroids.
Shuai Li   +6 more
semanticscholar   +1 more source

Effect of particle size on flotation separation of hematite and quartz

open access: yes工程科学学报, 2020
Generally, the flotation performance of mineral particles in a wide size range is usually poor, which can be attributed to the high reagent consumptions and low floatability differences between valuable and gangue minerals. Classification flotation is an
Dong LI   +6 more
doaj   +1 more source

Application of homogeneously precipitated nanosized Fe-doped alumina powders to carbon nanotube growth. [PDF]

open access: yes, 2010
Homogeneous precipitation of hydroxides was investigated as an alternative method to synthesize Fe-doped aluminum oxide (α-Al2−2xFe2xO3) particles over which carbon nanotubes (CNTs) were grown via a catalytic chemical vapor deposition (CCVD) method ...
Alvarez   +23 more
core   +2 more sources

Exchange interactions in transition metal oxides: The role of oxygen spin polarization [PDF]

open access: yes, 2017
Magnetism of transition metal (TM) oxides is usually described in terms of the Heisenberg model, with orientation-independent interactions between the spins.
Katsnelson, M. I.   +3 more
core   +2 more sources

Ultra-Narrow Depletion Layers in Hematite Mesocrystal-Based Photoanode for Boosting Multihole Water Oxidation.

open access: yesAngewandte Chemie, 2020
Significant charge recombination that is difficult to suppress limits the practical applications of hematite (α-Fe 2 O 3 ) for photoelectrochemical water splitting.
Zhujun Zhang, H. Nagashima, T. Tachikawa
semanticscholar   +1 more source

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