Results 11 to 20 of about 70,002 (285)

Relationship between magnesium-bearing magnetite formation and magnetite oxidation

open access: yesJournal of Materials Research and Technology
The impact of different oxidation atmospheres on the formation of magnesium-bearing magnetite in the Fe3O4–MgO and Fe2O3–MgO systems was investigated using FactSage 8.3 thermodynamic modeling, XRD, XPS, and SEM-EDS. This study also examined the influence
Fang Zhang   +6 more
doaj   +2 more sources

Viability of Bradyrhizobium japanicum on soybean seeds enhanced by magnetite nanoparticles during desiccation [PDF]

open access: yes, 2010
The aim of this study was to investigate whether magnetite nanoparticles affect the viability of Bradyrhizobium japanicum cells residing on the surface of soybean seeds during desiccation.
Ghalamboran, M. R., Ramsden, Jeremy J.
core   +7 more sources

Low-temperature magnetic properties of magnetite [PDF]

open access: yes, 2000
Although several studies have recommended removal of secondary components of magnetic remanence by zero-field cycling from room temperature to a temperature much lower than the low temperature transition for magnetite (about 120 K), the method has not ...
Wyn Williams   +3 more
core   +1 more source

Biotemplating arrays of nanomagnets using the biomineralisation protein Mms6 [PDF]

open access: yes, 2012
High quality magnetic nanoparticles (MNPs) are used in applications such as electronic data storage. Current methods for synthesising the consistent MNPs required use high temperatures, harsh chemicals and bespoke equipment.
Galloway, Johanna Marie
core   +6 more sources

Modelling magnetite biomineralisation: the interactions of proteins and Fe3O4 surfaces [PDF]

open access: yes
The biosynthesis of magnetite is the earliest known example of biomineralisation; how-ever, much of the detailed atomistic mechanisms by which the process occurs are unknown. Within the bacterial strain Magnetospirillum magneticum AMB-1, the formation of
Monnington, Amy Elizabeth
core   +3 more sources

Stability Improvement of Humic Acid as Sorbent through Magnetite and Chitin Modification

open access: yesJurnal Kimia Sains dan Aplikasi, 2020
Stability improvement of humic acid (HA) through modification of HA by chitin (HA-chitin) followed by a coating of HA-chitin on magnetite has been successfully performed.
Bambang Rusdiarso, Rahmat Basuki
doaj   +1 more source

Effect of Ni2+, Zn2+, and Co2+ on green rust transformation to magnetite

open access: yesGeochemical Transactions, 2022
In this study, we investigated Ni2+, Zn2+, and Co2+ mineralogical incorporation and its effect on green rust transformation to magnetite. Mineral transformation experiments were conducted by heating green rust suspensions at 85 °C in the presence of Ni2+,
Orion Farr, Evert J. Elzinga, Nathan Yee
doaj   +1 more source

Low-temperature cooling behavior of single-domain magnetite: Forcing of the crystallographic axes and interactions [PDF]

open access: yes, 2006
Low-temperature cycling (LTC) of magnetic remanences carried by rocks has become a standard technique in paleomagnetism, rock magnetism, and environmental magnetism as a means of identifying mineralogy and grain size.
Williams, Wyn; id_orcid
core   +1 more source

Electrical conductivity of magnetite‐bearing serpentinite during shear deformation

open access: yesGeophysical Research Letters, 2012
Electrical conductivity of serpentinite with various amounts of magnetite was measured during shear deformation at high pressure and temperatures (P = 1.0 GPa, T = 750 K) corresponding to mantle wedge conditions to evaluate the contribution of aligned ...
Seiya Kawano   +2 more
doaj   +1 more source

Metal Oxides Catalyze Formation of Dehydroamino Acids by Phosphate β-Elimination Under Physiological Conditions. [PDF]

open access: yesAngew Chem Int Ed Engl
Dehydroamino acids (DHAA) are atypical electrophilic sites that lead to crosslinked proteins in Alzheimer's disease (AD) brains. No catalyst for their formation has been known in humans. We report that metal oxides catalyze β‐elimination of phosphoserine and phosphothreonine in model peptides at pH 7.5°C and 37°C, yielding DHAAs.
Markovich SW   +3 more
europepmc   +3 more sources

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