Results 31 to 40 of about 4,898 (235)

Early Cretaceous absolute geomagnetic paleointensities from Córdoba province (Argentina) [PDF]

open access: yes, 2006
We present here new paleointensity and geochronology results from Early Cretaceous volcanic rocks of Sierra Chica de Cordoba (Argentina). The new K-Ar isotopic ages of 5 samples range from 136 to 122 Ma.
Alva-Valdivia, Luis M.   +5 more
core   +1 more source

PENENTUAN NILAI SATURASI MAGNETIK BATUAN PERIDOTIT ASAL DESA AWANG BANGKAL BARAT KABUPATEN BANJAR KALIMANTAN SELATAN

open access: yesJurnal Fisika Flux, 2013
Abstrak : Peridotite rocks are ultra-alkaline rocks that igneous rocks which high in mineral content of FeO, and also a magnetic mineral. Each rock type has specific properties and characteristics are manifested in the magnetic field in magnetic ...
Sudarningsih Sudarningsih   +2 more
doaj   +3 more sources

Methods in rock magnetism and palaeomagnetism / D.W. Collinson

open access: yesGeofísica Internacional, 1984
El desarrollo de las investigaciones en paleomagnetismo y magnetismo de rocas ha estado acompafiado y basado en el desarrollo de instrumentos y tecnicas. Este libra del Dr. D. W.
J. Urrutia Fucugauchi
doaj   +1 more source

Analysis of wasp-waisted hysteresis loops in magnetic rocks

open access: yes, 2011
The random-field Ising model of hysteresis is generalized to dilute magnets and solved on a Bethe lattice. Exact expressions for the major and minor hysteresis loops are obtained.
D. J. Dunlop   +4 more
core   +1 more source

A New Tool for Separating the Magnetic Mineralogy of Complex Mineral Assemblages from Low Temperature Magnetic Behavior

open access: yesFrontiers in Earth Science, 2017
One timeless challenge in rock magnetic studies, inclusive of paleomagnetism and environmental magnetism, is decomposing a sample's bulk magnetic behavior into its individual magnetic mineral components.
France Lagroix, Yohan Guyodo
doaj   +1 more source

Further evidence for early lunar magnetism from troctolite 76535 [PDF]

open access: yes, 2017
The earliest history of the lunar dynamo is largely unknown and has important implications for the thermal state of the Moon and the physics of dynamo generation.
Garrick-Bethell, Ian   +4 more
core   +1 more source

Hydrothermal synthesis, off-axis electron holography and magnetic properties of Fe$_{3}$O$_{4}$ nanoparticles [PDF]

open access: yes, 2014
The hydrothermal synthesis of Fe3O4 nanoparticles (NPs) (< 50 nm) from mixed FeCl3 / FeCl2 precursor solution at pH ~ 12 has been confirmed using complementary characterisation techniques of transmission electron microscopy and X-ray diffractometry.
Almeida, T. P.   +4 more
core   +4 more sources

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

open access: yesFEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane   +11 more
wiley   +1 more source

Functional Connectivity Linked to Cognitive Recovery After Minor Stroke

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri   +7 more
wiley   +1 more source

Hysteresis of Natural Magnetite Ensembles: Micromagnetics of Silicate‐Hosted Magnetite Inclusions Based on Focused‐Ion‐Beam Nanotomography

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Three‐dimensional geometries of silicate‐hosted magnetic inclusions from the Harcus intrusion, South Australia have been determined using focused‐ion‐beam nanotomography (FIB‐nt). By developing an effective workflow, the geometries were reconstructed for
Even S. Nikolaisen   +3 more
doaj   +1 more source

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