Results 111 to 120 of about 4,674,360 (279)

Defect‐Mediated Scintillation in Fully Inorganic Perovskites via Water‐Induced 0D/3D Phase Modulation

open access: yesAdvanced Functional Materials, EarlyView.
A reproducible synthesis to control 3D/0D phase ratios via water‐tuned solvent–antisolvent methods is presented. Enhanced scintillation yield and ultrafast decay are achieved. Defect‐driven emission mechanisms are revealed through cathodoluminescence and radioluminescence, shedding light on the underexplored role of the 0D Cs4PbBr6 and mixed 0D/3D ...
Mario Calora   +18 more
wiley   +1 more source

PLAN DE APERTURA EDUCATIVA 1991-1994

open access: yesRevista Colombiana de Educación, 1991
En Documentos la Revista Colombiana de Educación juzgó de interés prioritario presentar a sus lectores el texto completo del Plan de Apertura Educativa ya que el departamento Nacional de Planeación no iba a hacer la edición del mismo y éste empezaba a ...
Grupo de Investigación Grupo de Investigación
doaj   +1 more source

Embryo culture in presence of oviductal fluid induces DNA methylation changes in bovine blastocysts [PDF]

open access: yes, 2017
During the transit through the oviduct, the early embryo initiates an extensive DNA methylation reprogramming of its genome. Given that these epigenetic modifications are susceptible to environmental factors, components present in the oviductal milieu ...
Barrera, Antonio Daniel   +7 more
core   +1 more source

Cryogenic Focused Ion Beam Milling to Investigate the Anisotropic Magnetotransport Properties of Bismuth Microcrystals

open access: yesAdvanced Functional Materials, EarlyView.
The highly anisotropic Fermi surface of bismuth results in variations in magnetotransport properties across different crystallographic directions, which can be characterized by studying microcrystals. To avoid the observed surface melting under room temperature Focused Ion Beam (FIB) irradiation, two low‐temperature FIB fabrication methods are proposed
Amaia Sáenz‐Hernández   +6 more
wiley   +1 more source

DOS ESTUDIOS SOBRE EDUCACION EN LA COLONIA. Martínez, Alberto; Silva, Renán. Bogotá: CIUP, 1984.

open access: yesRevista Colombiana de Educación, 1984
Este libro recoge, en edición conjunta, los primeros estudios producidos por el CIUP dentro del proyecto interinstitucional sobre la Historia de la práctica pedagógica durante la colonia, a saber: El maestro y la instrucción pública y la Reforma de ...
Grupo de Investigación Grupo de Investigación
doaj   +1 more source

Oregano essential oil-pectin edible films as anti-quorum sensing and food antimicrobial agents [PDF]

open access: yes, 2014
Edible films can be used as carriers for antimicrobial compounds to assure food safety andquality; in addition, pathogenesis of food bacteria is related to a cell to cell communicationmechanism calledquorum sensing(QS).
Alvarez, María Victoria   +8 more
core   +2 more sources

Bioinspired Bromination Enables Extensible, Strain‐Stiffening Resilin Peptide Scaffolds with Tunable Degradation

open access: yesAdvanced Functional Materials, EarlyView.
Bioinspired bromination of a resilin‐derived peptide enables the fabrication of electrospun nanofibrous scaffolds that uniquely combine strain‐stiffening elasticity, proteolytic stability, and antioxidant functionality. These brominated peptide–gelatin hybrids mimic the extensibility of natural elastomers, demonstrating tunable mechanical resilience ...
Elisa Marelli   +6 more
wiley   +1 more source

Evaluación de la educación bajo contrato con la iglesia católica

open access: yesRevista Colombiana de Educación, 1978
La educación impartida en los territorios de misiones ha funcionado históricamente a cargo de la Iglesia Católica cuyo objetivo principal ha sido el de evangelizar las comunidades que habitan extensas áreas disgregadas y alejadas de los centros urbanos ...
Grupo de Investigación Grupo de Investigación
doaj   +1 more source

IX Congreso sobre Investigación en Didáctica de las Ciencias [PDF]

open access: yes, 2013
Del 9 al 12 de setembre de 2013 es celebrarà la 9a edició del Congrés Internacional sobre recerca en Didàctica de les Ciències, organitzat per la revista "Enseñanza de las Ciencias".
Congreso sobre Investigación en Didáctica de las Ciencias
core   +1 more source

Roll‐to‐Roll Mechanical Exfoliation for Large‐Area van der Waals Films with Preserved Crystallographic Alignment

open access: yesAdvanced Functional Materials, EarlyView.
A roll‐to‐roll exfoliation method is demonstrated that preserves the crystallographic alignment of anisotropic 2D materials over large areas, enabling scalable fabrication of directional electronic and optoelectronic devices. Abstract Anisotropic 2D materials such as black phosphorus (BP), GeS or CrSBr, exhibit direction‐dependent optical and ...
Esteban Zamora‐Amo   +14 more
wiley   +1 more source

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