Results 21 to 30 of about 80,576 (254)
Quantifying Soil Goethite/Hematite Ratios: A New Method Based on Diffuse Reflectance Spectra
Geophysical Research Letters, 2023 Goethite/hematite ratios in soils are widely used to reconstruct past climatic changes, but their accurate measurements have remained challenging due to the matrix effect.
Xianqiang Meng +4 more
doaj +1 more source
Nuclear Engineering and Technology, 2021 The efficiency of decontamination of model spent ion exchange resins, contaminated with magnetite and hematite, with mineral acid solutions, and using electro-decontamination, was evaluated. It has been shown that effective hematite dissolution occurs in
E.A. Tokar +4 more
doaj +1 more source
Geoscience Letters, 2020 Determination of hematite contributions to sedimentary magnetizations is an important but difficult task in quantitative environmental studies. The poorly crystalline and fine-grained nature of hematite nanoparticles makes quantification of their ...
Andrew P. Roberts +8 more
doaj +1 more source
NiFeOx decorated Ge-hematite/perovskite for an efficient water splitting system
Nature Communications, 2021 Germanium (Ge) has potential as a dopant suitable for the hematite-based photoelectrochemical water splitting system. Here, the authors report the fabrication of Ge doped porous hematite and demonstrate an efficient tandem system of Ge doped porous ...
Ki-Yong Yoon +9 more
doaj +1 more source
Mixed Micromax and hematite-based fly ash geopolymer for heavy-weight well cementing
Scientific Reports, 2023 Ordinary Portland cement (OPC) has introduced different environmental and technical issues. Researchers tried either adding new materials to cement or developing alternatives for both technical and environmental challenges.
Ahmed Abdelaal, Salaheldin Elkatatny
doaj +1 more source
Influence of surface morphology on the immersion mode ice nucleation efficiency of hematite particles [PDF]
Atmospheric Chemistry and Physics, 2014 In this paper, the effect of the morphological modification of aerosol particles with respect to heterogeneous ice nucleation is comprehensively investigated for laboratory-generated hematite particles as a model substrate for atmospheric dust particles.
N. Hiranuma +7 more
doaj +1 more source
Unexpected Magnetic Behavior of Natural Hematite‐Bearing Rocks at Low Temperatures
Geochemistry, Geophysics, Geosystems, 2021 Hematite is a commonly occurring magnetic mineral in nature that has numerous scientific and technological applications. A characteristic property of hematite is a low‐temperature spin‐flop transition called the Morin transition.
Alexandra Abrajevitch +3 more
doaj +1 more source
Powders, 2023 Crystalline hematite nanoparticles as adsorbents for anionic Congo red dye were prepared by a hydrothermal process using urea hydrolysis. To examine the effects of coexisting anions in a solution on the formation of hematite nanoparticles, different iron(
Takahiro Onizuka +2 more
doaj +1 more source
Chemical weathering and provenance evolution of Holocene–Recent sediments from the Western Indus Shelf, Northern Arabian Sea inferred from physical and mineralogical properties [PDF]
, 2012 We present a multi-proxy mineral record based on X-ray diffraction and diffuse reflectance spectrophotometry analysis for two cores from the western Indus Shelf in order to reconstruct changing weathering intensities, sediment transport, and provenance ...
Clift, Peter D. +5 more
core +2 more sources
Exchange interactions in transition metal oxides: The role of oxygen spin polarization [PDF]
, 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