Results 111 to 120 of about 4,791,962 (253)

La formación ambiental: presupuesto epistemológico para la educación superior

open access: yesHumanidades Médicas, 2017
El presente artículo está dirigido a sistematizar una concepción teórica y metodológica que sustente la formación ambiental en las carreras universitarias cubanas.
Enrique Loret de Mola   +2 more
doaj   +2 more sources

La gestión medioambiental: el significado del medio físico como factor de cualificación de las políticas territoriales [PDF]

open access: yes, 2001
Valoración de la importancia que posee el análisis integrado del medio físico como soporte esencial de las políticas de ordenación sostenible del territorio, teniendo en cuenta las disfunciones, contradicciones y carencias que presenta la consideración ...
Manero Miguel, Fernando
core   +1 more source

Supraparticles Composed of Graphitic Carbon Nitride Nanoparticles and Silica‐Supported Horseradish Peroxidase as Customizable Hybrid Catalysts for Photo‐Biocatalytic Cascade Reactions in Continuous Flow

open access: yesAdvanced Functional Materials, EarlyView.
Herein presented supraparticles combine the nanoparticulate photocatalyst graphitic carbon nitride with the enzyme horseradish peroxidase, which is immobilized on silica nanoparticles. In an optimized compatibility range, both catalysts operate effectively within the hybrid supraparticles and catalyze a cascade reaction consisting of the photocatalytic
Bettina Herbig   +11 more
wiley   +1 more source

Indicadores y acciones en el sistema territorial [PDF]

open access: yes, 2017
13 p.En la medida en que se trata de abordar los elementos relacionados con las generalidades del riesgo y con la conceptualización de la vulnerabilidad, resulta prioritario comprender el territorio más allá de simplemente elementos físicos; plantear un ...
Bolívar-Barón, Holman Diego   +6 more
core  

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

open access: yesAdvanced Functional Materials, EarlyView.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid   +13 more
wiley   +1 more source

Bio‐Friendly Artificial Muscles Based on Carbon Nanotube Yarns and Eutectogel Derivatives

open access: yesAdvanced Functional Materials, EarlyView.
Solid‐state artificial muscles based on coiled commercial carbon nanotube yarns coated with eutectogel derivatives exhibit unipolar actuation through selective ion intercalation. Combining polyanionic and polycationic gels enables enhanced contractile stroke and high energy density.
Gabriela Ananieva   +6 more
wiley   +1 more source

GeAl2‐2xFe2xO3(OH)4 Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction

open access: yesAdvanced Functional Materials, EarlyView.
Fe‐doped imogolite nanotubes are synthesized via a one‐step hydrothermal method with varying Fe substitution ratios x. Structural and spectroscopic analyses confirm homogeneous Fe incorporation while preserving tubular shape. Optimal doping at x = 0.05 enhances optical absorption, narrows band gap, reduces charge transfer resistance, and significantly ...
Yassine Naciri   +12 more
wiley   +1 more source

Proyectos estratégicos de ordenamiento territorial para la consolidación del municipio de Marsella como territorio sustentable [PDF]

open access: yes, 2012
La concepción de territorio, reconocido no solamente como un trozo de naturaleza con características físicas, ambientales y climáticas particulares , sino que también es un espacio determinado por el accionar de distintos actores públicos y privados ...
Pinilla Mosquera, Paula Andrea   +1 more
core  

Peptide Sequencing With Single Acid Resolution Using a Sub‐Nanometer Diameter Pore

open access: yesAdvanced Functional Materials, EarlyView.
To sequence a single molecule of Aβ1−42–sodium dodecyl sulfate (SDS), the aggregate is forced through a sub‐nanopore 0.4 nm in diameter spanning a 4.0 nm thick membrane. The figure is a visual molecular dynamics (VMD) snapshot depicting the translocation of Aβ1−42–SDS through the pore; only the peptide, the SDS, the Na+ (yellow/green) and Cl− (cyan ...
Apurba Paul   +8 more
wiley   +1 more source

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