Results 141 to 150 of about 466,978 (244)

Recurrent novae: Type Ia supernovae in the making

open access: yes, 2016
We have constructed theoretical light curves for recurrent nova outbursts based on a thermonuclear runaway model. Fitting theoretical light curves with the observations of the eight known recurrent novae provides us with important information about these

core  

Nanocubes and Cuboctahedra: Entropic Stabilization Versus Thermal Segregation in Rock Salt‐ and Spinel‐Type Multinary Oxides from Spray‐Flame Synthesis

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Spray‐flame synthesis enables highly flexible and scalable production of multinary and high‐entropy oxide nanoparticles due to high synthesis temperatures with subsequent quenching. Temperature‐dependent in situ diffraction of as‐synthesized materials clearly reveals entropy stabilization in rock salt lattices, while spinels—featuring tetrahedral and ...
Mohammed‐Ali Sheikh   +7 more
wiley   +1 more source

Light‐Induced Structural Reorganization of Fe Centers Unlocks High Efficiency of Visible‐Light Photo‐Fenton Water Cleaning Catalyst

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Bimetallic Cu and Fe oxide species supported on porous silica with interparticle mesoporosity act as efficient photo‐Fenton‐like catalysts under visible light. Photogenerated electrons drive the Cu2+/Cu1+ redox cycle. Part of Cu1+ is responsible for the regeneration of the Fe3+/Fe2+ cycle at neutral pH. Light irradiation additionally induces structural
Andraž Šuligoj   +6 more
wiley   +1 more source

High-energy gamma-ray emission from recurrent novae

open access: yes, 2008
Symposium E, session 12 (oral). Paper number: E12-0020-08International audienceSymbiotic recurrent novae are binary systems in which a massive white dwarf accretes hydrogenrich material from a red giant companion.
Tatischeff, Vincent
core   +1 more source

Multiple outflows and delayed ejections revealed by early imaging of novae. [PDF]

open access: yesNat Astron
Aydi E   +41 more
europepmc   +1 more source

Phosphorus-rich stars with unusual abundances are challenging theoretical predictions. [PDF]

open access: yesNat Commun, 2020
Masseron T   +6 more
europepmc   +1 more source

Doped Ta3N5 Semi‐Transparent Photoanode Enabling Stable Solar Redox Flow Cell Operation

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Synergistic Al:TiO2 underlayer and La doping stabilize semitransparent Ta3N5 photoelectrodes for over 90 h of continuous operation in alkaline solution. The solar redox flow cell demonstrated 12 photocharge–discharge cycles at ∼55% coulombic efficiency using a K4Fe(CN)6|1,5‐DHAQ chemistry. Solar redox flow cells (SRFCs) are photoelectrochemical devices
Filipe Moisés M. Francisco   +4 more
wiley   +1 more source

Recurrent Ceramic Femoral Head Fracture in Dual Mobility Total Hip Arthroplasty: A Case Report. [PDF]

open access: yesJ Orthop Case Rep
Ghannam MK   +5 more
europepmc   +1 more source

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