Results 61 to 70 of about 233,674 (199)

Global mapping of iron and titanium oxides in the lunar megaregolith and subsurface [PDF]

open access: yes, 2007
[Abstract]: This paper reports mapping results obtained by remote sensing analysis of Iron and Titanium oxides in the megaregolith under the lunar Highlands regolith and in the subsurface under the Mare and South Pole Aitken basin regolith. FeO and TiO2
Carter, B. D., Jackson, Noel William
core   +2 more sources

Effect of Iron Oxides (Ordinary and Nano) and Municipal Solid Waste Compost (MSWC) Coated Sulfur on Wheat (Triticum aestivum L.) Plant Iron Concentration and Growth

open access: yesپژوهشهای زراعی ایران, 2011
A greenhouse study was conducted to compare the effects of ordinary iron oxide (0.02-0.06 mm) and nano iron oxide (25-250 nm) and five levels of both iron oxides (0, 0.05, 0.1, 0.5, and 1.0 %w/w) and two levels of sulfurous granular compost (MSW) (0 and ...
S Mazaherinia   +3 more
doaj   +1 more source

Metalliferous Biosignatures for Deep Subsurface Microbial Activity [PDF]

open access: yes, 2015
Acknowledgments We thank the British Geological Survey (BGS) for the provision of samples and the Science & Technology Facilities Council (STFC) grant (ST/L001233/1) for PhD funding which aided this project.
Bowden, Stephen   +3 more
core   +1 more source

X-ray photoelectron spectroscopy study of radiofrequency-sputtered refractory compound steel interfaces [PDF]

open access: yes
Radiofrequency sputtering was used to deposit Mo2C, Mo2B5, and MoSi2 coatings on 440C steel substrates. Both sputter etched and preoxidized substrates were used, and the films were deposited with and without a substrate bias of -300 V. The composition of
Brainard, W. A., Wheeler, D. R.
core   +1 more source

One pot solvothermal synthesis of organic acid coated magnetic iron oxide nanoparticles [PDF]

open access: yes, 2013
Indexación: ScieloABSTRACT In this work we present the synthesis and characterization of iron oxide nanoparticles (IONPs), which were structurally and magnetically characterized. The use of iron salts and an organic acid (l-serine or ascorbic acid) as
Cruz, Carlos   +4 more
core  

Synthetic and natural iron oxide characterization through microparticle voltammetry [PDF]

open access: yes, 2009
Se presentan los resultados de un estudio sobre el uso de la Voltametría de Micropartículas (VMP), aplicada a la identificación de óxidos y oxihidróxidos de hierro. Mediante esta técnica, fue posible diferenciar hematita, goethita, magnetita y maghemita,
Bidegain, Juan Carlos   +2 more
core   +3 more sources

Study of Siderurgy Slags for the Reuse of Iron Oxides for Biotechnology Application

open access: yesProceedings, 2018
The reuse of slag for the extraction of iron oxides, besides allowing the use of potentially polluting material, allows its strategic use in biotechnological applications.
Diogo T. Moreira   +2 more
doaj   +1 more source

Peran Ligan Organik Terhadap Pembentukan Oksida Besi Di Tanah Sulfat Masam [PDF]

open access: yes, 2013
. Iron oxides in the soil consisted of goethite (α-FeOOH) with yellow or brown colour, hemathite (α-Fe2O3) with red, lepidocrocite (γ-FeOOH) with yellow, maghemite (γ-Fe2O3), magnetite (Fe3O4) with black and feryhidrite (5Fe2O3.9H2O or Fe5HO8.4H2O) have ...
Annisa, W. (Wahida), Hanudin, E. (Eko)
core  

Accelerated Iron Evolution in Quaternary Red Soils through Anthropogenic Land Use Activities

open access: yesAgronomy
Iron in soil exists in various valence states and is prone to changes with alterations in soil environmental conditions. Its migration and transformation are crucial for soil formation and understanding soil evolution.
Cheng-Cheng Zhang   +3 more
doaj   +1 more source

The behavior of ozone on different iron oxides surface sites in water

open access: yesScientific Reports, 2019
A transformation process of ozone on different iron oxides suspensions, including α-Fe2O3, α-FeOOH, Fe3O4, was carried out using FTIR of adsorbed pyridine, ATR-FTIR and electron paramagnetic resonance (EPR) spectra with isotope 18O3. It was verified that
Liqiang Yan, Jishuai Bing, Hecheng Wu
doaj   +1 more source

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