Results 131 to 140 of about 2,450,551 (302)

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

open access: yesAdvanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano   +18 more
wiley   +1 more source

Crónica : Noticias del Departamento de Ciencias de la Educación

open access: yes, 2016
Contenido: 1. Sobre la estructura y funciones del Departamento 2. Plan de publicaciones 3. Centro de Documentación e Información Pedagógicas 4. Un ciclo radial 5. Grupo de trabajo de Didáctica Experimental 6.
Departamento de Ciencias de la Educación
core  

Um discurso sobre as ciências

open access: yesBoaventura de Sousa Santos, 2019

semanticscholar   +1 more source

Bioorthogonal Photoactivation of 2‐Nitrobenzyl Caged Doxorubicin Anticancer Prodrugs on Gold Nanostars

open access: yesAdvanced Materials, EarlyView.
Bioorthogonal chemistry was applied to intracellularly photoactivate Doxorubicin (Dox) using gold nanostars (AuNSt) and near‐infrared (NIR) light. Two prodrugs were used: one photoactivatable, masked with 2‐nitrobenzyl carbamate (proDox1) and another photolabile, masked with 2‐nitrobenzyl diol (proDox2), which was attached to the AuNSt surface.
Juan José Esteve‐Moreno   +15 more
wiley   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

open access: yesAdvanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo   +11 more
wiley   +1 more source

Solvent‐Free Thermal Defect Engineering in Molecular Frameworks With Volatile Linkers

open access: yesAdvanced Materials, EarlyView.
Thermal removal of neutral volatile linkers enables precise and solvent‐free generation of metal vacancies in MOFs. This strategy affords redox‐stable, coordinatively unsaturated FeII sites with tunable spin, ligand coordination, and catalytic behavior. The approach offers a general route to design defect‐functional materials through local coordination
Sonia Martínez‐Giménez   +9 more
wiley   +1 more source

Revista Institucional de la Facultad de Ciencias Económicas | Año 6 | Número 12

open access: yes, 2016
Editorial | Martín López Armengol Institucional: Internacionalización: de Económicas al mundo Extensión: Lic. Matías Poggio Extensión: Programa de coequipo Extensión: Mg. Liliana Galán Graduados: Mg.
Facultad de Ciencias Económicas
core  

Las emociones en la enseñanza y el aprendizaje de las ciencias en educación secundaria

open access: yesEnseñanza de las Ciencias, 2015
Analizar la influencia que posee la dimensión afectiva en el proceso de aprender y enseñar ciencias, en la eficacia docente y en el desarrollo del profesor de ciencias experimentales, es un ámbito de investigación de suma importancia en la formación de ...
Ana Belén Borrachero Cortés
doaj  

Tuning Amorphous‐Crystalline Catalytic Interfaces by Mechanochemistry: Cu‐Based Metallic Glasses Coupled with Ceria for CO Oxidation

open access: yesAdvanced Materials, EarlyView.
Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim   +17 more
wiley   +1 more source

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