Results 21 to 30 of about 127,670 (294)

Mechanical Properties of Natural Chitosan/Hydroxyapatite/Magnetite Nanocomposites for Tissue Engineering Applications [PDF]

open access: yes, 2016
Chitosan (CS), hydroxyapatite (HA), and magnetite (Fe3O4) have been broadly employed for bone treatment applications. Having a hybrid biomaterial composed of the aforementioned constituents not only accumulates the useful characteristics of each ...
Akao   +57 more
core   +2 more sources

Necessity of electrically conductive pili for methanogenesis with magnetite stimulation [PDF]

open access: yesPeerJ, 2018
Background Magnetite-mediated direct interspecies electron transfer (DIET) between Geobacter and Methanosarcina species is increasingly being invoked to explain magnetite stimulation of methane production in anaerobic soils and sediments.
Oumei Wang   +4 more
doaj   +2 more sources

Electronic and magnetic structure of epitaxial NiO/Fe$_3$O$_4$(001) heterostructures grown on MgO(001) and Nb-doped SrTiO$_3$(001) [PDF]

open access: yes, 2016
We study the underlying chemical, electronic and magnetic properties of a number of magnetite based thin films. The main focus is placed onto NiO/Fe$_3$O$_4$(001) bilayers grown on MgO(001) and Nb-SrTiO$_3$(001) substrates.
Arenholz, E.   +11 more
core   +3 more sources

Controlled biomineralization of magnetite (Fe3O4) by Magnetospirillum gryphiswaldense [PDF]

open access: yes, 2008
Results from a study of the chemical composition and micro-structural characteristics of bacterial magnetosomes extracted from the magnetotactic bacterial strain Magnetospirillum gryphiswaldense are presented here.
Bauerlein   +12 more
core   +2 more sources

The magnetite-based receptors in the beak of birds and their role in avian navigation [PDF]

open access: yes, 2012
Iron-rich structures have been described in the beak of homing pigeons, chickens and several species of migratory birds and interpreted as magnetoreceptors.
Wiltschko, Roswitha, Wiltschko, Wolfgang
core   +1 more source

Effect of Surface Functionalization on the Adsorption of Arsenic Using Magnetite Nanocrystals

open access: yesAdsorption Science & Technology, 2013
Bare-magnetite nanocrystals with an average size of 10 nm, synthesized using the co-precipitation method, were functionalized with sodium oleate (SO) in aqueous media.
T. Luna Pineda   +2 more
doaj   +1 more source

Interactions between magnetite and humic substances: redox reactions and dissolution processes

open access: yesGeochemical Transactions, 2017
Humic substances (HS) are redox-active compounds that are ubiquitous in the environment and can serve as electron shuttles during microbial Fe(III) reduction thus reducing a variety of Fe(III) minerals.
Anneli Sundman   +4 more
doaj   +1 more source

Superparamagnetic Poly (3-hydroxybutyrate-co-3 hydroxyvalerate) (PHBV) nanoparticles for biomedical applications [PDF]

open access: yes, 2013
Indexación: ScieloBackground: The progress in material science and the recent advances in biodegradable/biocompatible polymers and magnetic iron oxide nanoparticles have led to develop innovative diagnostic and therapeutic strategies for diseases based ...
Altbir, Dora   +6 more
core   +2 more sources

Bats Use Magnetite to Detect the Earth's Magnetic Field [PDF]

open access: yes, 2008
While the role of magnetic cues for compass orientation has been confirmed in numerous animals, the mechanism of detection is still debated. Two hypotheses have been proposed, one based on a light dependent mechanism, apparently used by birds and another
AJ Kalmijn   +56 more
core   +4 more sources

Polaron physics and crossover transition in magnetite probed by pressure-dependent infrared spectroscopy [PDF]

open access: yes, 2012
The optical properties of magnetite at room temperature were studied by infrared reflectivity measurements as a function of pressure up to 8 GPa. The optical conductivity spectrum consists of a Drude term, two sharp phonon modes, a far-infrared band at ...
C A Kuntscher   +13 more
core   +5 more sources

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