Results 41 to 50 of about 82,292 (297)

Determination of Oxygen Nonstoichiometry and Diffusivity in Mixed Conducting Oxides by Oxygen Coulometric Titration. II Oxygen Nonstoichiometry and Defect Model for La0.8Sr0.2CoO3-delta [PDF]

open access: yes, 1997
The oxygen nonstoichiometry of La0.8Sr0.2CoO3-delta has been determined as a function of oxygen partial pressure and temperature using a high-temperature coulometric titration cell.
Bouwmeester, Henricus J.M.   +2 more
core   +5 more sources

Melamine-Assisted Thermal Activation Method for Vacancy-Rich ZnO: Calcination Effects on Microstructure and Photocatalytic Properties

open access: yesMolecules, 2023
Defect engineering is considered an effective method to adjust the photocatalytic properties of materials. In this work, we synthesized the vacancy-rich ZnO rods with (100) planes via the melamine-assisted thermal activation method.
Weiwei Wang   +3 more
doaj   +1 more source

Ab initio modeling of oxygen impurity atom incorporation into uranium mononitride surface and subsurface vacancies

open access: yes, 2012
The incorporation of oxygen atoms has been simulated into either nitrogen or uranium vacancy at the UN(001) surface, sub-surface or central layers. For calculations on the corresponding slab models both the relativistic pseudopotentials and the method of
Arai   +39 more
core   +1 more source

Localized versus itinerant states created by multiple oxygen vacancies in SrTiO3

open access: yesNew Journal of Physics, 2015
Oxygen vacancies in strontium titanate surfaces (SrTiO _3 ) have been linked to the presence of a two-dimensional electron gas with unique behavior. We perform a detailed density functional theory study of the lattice and electronic structure of SrTiO _3
Harald O Jeschke   +2 more
doaj   +1 more source

Strain-induced structure and oxygen transport interactions in epitaxial La0.6Sr0.4CoO3−δ thin films

open access: yesCommunications Materials, 2020
Strain engineering can enhance oxygen transport in cathodes in solid oxide fuel cells. Here, atomic scale imaging is used to probe local structures in tensile- and compressive-strained La0.6Sr0.4CoO3-δ films, revealing higher oxygen vacancy concentration
Yurii P. Ivanov   +7 more
doaj   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

Experimental and theoretical study of oxygen vacancy induced La-doped mesoporous TiO2 for enhanced thermal stability

open access: yesAIP Advances, 2023
We report a facile synthesis of mesoporous TiO2 with a large specific surface area and rich oxygen vacancies using La-doped TiO2 through high-temperature annealing. Such integration of a unique mesoporous structure and oxygen vacancies provides effective
Kamaljeet Singh   +3 more
doaj   +1 more source

Self-passivation of vacancies in \alpha-PbO

open access: yes, 2013
We introduce a self-passivation of single lead (Pb) and oxygen (O) vacancies in the \alpha-PbO compound through formation of a Pb-O vacancy pair. The preferential mechanism for pair formation involves initial development of the single Pb vacancy which ...
Berashevich, J.   +2 more
core   +1 more source

First-principle calculation of monovacancy and divacancy interactions with atomic oxygen in nickel: thermal expansion effects [PDF]

open access: yes, 2009
The insertion and diffusion energies of oxygen in presence of vacancies in nickel are studied by using the first-principle projector augmented waves (PAW).
Andrieu, Eric   +3 more
core   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

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