Results 41 to 50 of about 119,992 (349)

The formation of boundary clinopyroxenes and associated glass veins in type B1 CAIs [PDF]

open access: yes, 2009
We used focused ion beam thin section preparation and scanning transmission electron microscopy (FIB/STEM) to examine the interfacial region between spinel and host melilite for spinel grains in type B1 inclusions from the Allende and Leoville ...
Abreu   +83 more
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

Band gap control via tuning of inversion degree in CdIn$_2$S$_4$ spinel [PDF]

open access: yes, 2012
Based on theoretical arguments we propose a possible route for controlling the band-gap in the promising photovoltaic material CdIn$_2$S$_4$. Our \textit{ab initio} calculations show that the experimental degree of inversion in this spinel (fraction of ...
Madelung O.   +6 more
core   +5 more sources

Defect Analysis of the β– to γ–Ga2O3 Phase Transition

open access: yesAdvanced Functional Materials, EarlyView.
The role of defects at all the relevant stages of the β$\beta$‐ to γ$\gamma$‐Ga2O3 polymorph transition is investigated using a multi method approach. The positron annihilation spectroscopy based results show that the defect density decreases after the transition, and that changes in defect configuration within the γ phase occur with increasing ...
Umutcan Bektas   +9 more
wiley   +1 more source

Concretos refratários engenheirados com expansão controlada para panelas de siderurgia Engineered refractory castables with controlled expansion for molten steel ladles

open access: yesCerâmica, 2008
A seleção de revestimentos refratários para a siderurgia é dependente de fatores termodinâmicos e microestruturais. O emprego de óxidos termodinamicamente estáveis, como a alumina e a magnésia, é fundamental para o aumento de vida útil do produto, por ...
M. A. L. Braulio   +5 more
doaj   +1 more source

Synthesis of zinc ferrite nanopowders in an RF thermal plasma [PDF]

open access: yes, 2001
Nanosized zinc ferrite spinel powders of various compositions were produced in an RF thermal plasma from oxide mixtures and from co-precipitated hydroxides. The products were characterised for bulk chemical (ICP-AES), and phase composition (XRD).
Gubicza, Jenő   +2 more
core  

Interface magnetism and electronic structure: ZnO(0001)/Co3O4(111)

open access: yes, 2018
We have studied the structural, electronic and magnetic properties of spinel $\rm Co_3O_4$(111) surfaces and their interfaces with ZnO (0001) using density functional theory (DFT) within the Generalized Gradient Approximation with on-site Coulomb ...
Hayn, Roland   +3 more
core   +1 more source

Exchange biasing of single-domain Ni nanoparticles spontaneously grown in an antiferromagnetic MnO matrix [PDF]

open access: yes, 2007
Exchange biased composites of ferromagnetic single-domain Ni nanoparticles embedded within large grains of MnO have been prepared by reduction of Ni$_x$Mn$_{1-x}$O$_4$ phases in flowing hydrogen.
Abramoff M D   +7 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska   +7 more
wiley   +1 more source

Cultivos de células de nervio ciático y de ganglio de la raíz dorsal de ratón adulto

open access: yesActa Biológica Colombiana, 2010
Las células de Schwann (CS) son la glía de sistema nervio periférico. El diseño de prótesis nerviosas se ha centrado en la producción de CS autólogas cultivadas a partir de nervios periféricos (NP) y de ganglios de la raíz dorsal (GRD).
Clara Matilde Spinel
doaj  

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