Results 91 to 100 of about 77,736 (258)

Large Igneous Provinces (LIPs) and Anoxia Events in “The Boring Billion”

open access: yesGeophysical Monograph Series, Page 449-486., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Shuan‐Hong Zhang   +4 more
wiley  

+1 more source

First-Principles Study on Structural Properties of GeO$_2$ and SiO$_2$ under Compression and Expansion Pressure

open access: yes, 2011
The detailed analysis of the structural variations of three GeO$_2$ and SiO$_2$ polymorphs ($\alpha$-quartz, $\alpha$-cristobalite, and rutile) under compression and expansion pressure is reported.
Böhm   +38 more
core   +1 more source

Metasomatism and Mélange Development at the Conditions of Modern Deep Slow Slip: P‐T‐t Evolution of Metasomatic Rocks (Pimu'nga/Santa Catalina Island, CA)

open access: yesGeochemistry, Geophysics, Geosystems
The subduction interface hosts megathrust earthquakes and ductile creep, is fluid‐rich and chemically dynamic, and produces metasomatic rocks that may host episodic tremor and slow slip (ETS).
W. Hoover   +5 more
doaj   +1 more source

Coupled Zircon-Rutile U-Pb Chronology: LA ICP-MS Dating, Geological Significance and Applications to Sediment Provenance in the Eastern Himalayan-Indo-Burman Region

open access: yesGeosciences, 2019
U-Pb dating by LA ICP-MS is one of the most popular and successful isotopic techniques available to the Earth Sciences to constrain timing and rates of geological processes thanks to its high spatial resolution, good precision (absolute U/Pb age ...
Laura Bracciali
doaj   +1 more source

X-ray Anomalous Scattering of Diluted Magnetic Oxide Semiconductors: Possible Evidence of Lattice Deformation for High Temperature Ferromagnetism

open access: yes, 2007
We have examined whether the Co ions crystallographically substitute on the Ti sites in rutile and anatase Ti_{1-x}$Co$_{x}$O$_{2-delta}$ thin films that exhibit room-temperature ferromagnetism.
Daisuke Okuyama   +10 more
core   +1 more source

Mechanistic Insights Into Photocatalytic Materials for Toxic Pollutants: Environmental Remediation of Personal Care Products

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Photocatalytic materials have emerged as promising solutions for environmental applications due to their ability to degrade organic pollutants under sunlight or artificial light. In this review, recent progress on the photocatalytic materials used for the degradation of pharmaceutical personal care products (PPCPs) in environmental ...
Urvashi Sen   +5 more
wiley   +1 more source

New data on mineralogy of granitic pegmatites Mt. Soroch′ya, Southern Urals

open access: yesЛитосфера, 2016
Mineralogy of granitic pegmatites of Mt. Soroch′ya near Zlatoust which ore included in the Upper Riphean metamorphic mica-garnet, staurolite-garnet, and wollastonite-sillimanite-garnet schists of the Kuvash Formation is examined. Zonal pegmatite veins 30-
V. I. Popova   +2 more
doaj  

Reversible formation-dissociation of polaron in rutile driven by electric field

open access: yesMaterials Research Letters, 2018
Density functional theory with Hubbard U correction is employed to study the polaron in rutile under external electric fields. It is found that electric-field-induced displacements of the ions enhance the sampling of the polaron configurations, which is ...
Linggang Zhu, Jian Zhou, Zhimei Sun
doaj   +1 more source

Small Polarons in Transition Metal Oxides

open access: yes, 2019
The formation of polarons is a pervasive phenomenon in transition metal oxide compounds, with a strong impact on the physical properties and functionalities of the hosting materials.
A Janotti   +96 more
core   +1 more source

Engineering Binary Metal Oxide Nano‐Oscillators for Deterministic and Probabilistic Computing: From Material Physics to Emerging Paradigms

open access: yesAdvanced Physics Research, EarlyView.
This study demonstrates a versatile hardware platform using nano‐oscillators based on binary oxides for deterministic and probabilistic computing. By tailoring material physics, NbOx enables energy‐efficient synchronization for pattern recognition, while enhanced stochasticity in engineered SiOx provides robust entropy for p‐bits to solve complex ...
Jihyun Kim   +3 more
wiley   +1 more source

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