Results 61 to 70 of about 851,403 (199)

Acceso abierto: hacia la gestión asociativa de bienes cognitivos

open access: yesRevista Stultifera, 2019
El objetivo de este trabajo es fundamentar una aproximación al concepto de acceso abierto a la producción académica como parte de la formulación de políticas científicas en el Sur global.
Santiago José Roca Petitjean
doaj   +1 more source

Universal Dental Adhesives Containing Zinc Oxide and Copper Nanoparticles Improve Interface on Caries‐Affected Dentin After 2 Years: In Vitro Study

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To evaluate the effect of adding zinc oxide and copper nanoparticles (ZnO/CuNp) into universal adhesives (UAs) on resin–dentin microtensile bond strength (μTBS), nanoleakage (NL), and presence of ZnO/Cu within the hybrid layer on caries‐affected dentin, both at baseline (T0) and after 2 years of water storage (T2).
Mario Felipe Gutiérrez   +4 more
wiley   +1 more source

Exploring natural sunscreens: UVB protection and antioxidant properties in gadusol‐rich fish roes extracts

open access: yesPhotochemistry and Photobiology, EarlyView.
Gadusol‐rich extracts provide effective UVB protection and antioxidant activity in HaCaT cells and C. elegans, highlighting their potential as natural photochemoprotective agents for pharmaceutical and cosmetic applications. It also demonstrates remarkable in vitro antioxidant capacity and thermal stability over time.
Rocío Isla Naveira   +9 more
wiley   +1 more source

Sistema de costeo de producción en web para las MIPYMES de la Zona Oriental, innovación tecnológica de ITCA-FEPADE [PDF]

open access: yes, 2012
En este artículo se describe el desarrollo de un proyecto de investigación aplicada orientado a la implementación de nuevas tecnologías y uso de “la nube” por parte de las MIPYMES.
Claros Quintanilla, Edgardo Antonio
core  

Photoprotective potential of gadusol against ultraviolet B radiation in melanocytes

open access: yesPhotochemistry and Photobiology, EarlyView.
Gadusol protects melanocytes from ultraviolet B (UVB)‐induced damage without cytotoxicity. Abstract The increasing incidence of skin cancer, including melanoma, combined with the need for ultraviolet (UV) filters that are safe for human health and marine ecosystems, is driving the search for new photoprotective agents.
Andressa Mai Matsumoto   +8 more
wiley   +1 more source

Regeneración de campus para la creación de un laboratorio vivo de sostenibilidad ("living lab") en el Campus de Excelencia Internacional de Moncloa [PDF]

open access: yes, 2017
La Universidad Politécnica de Madrid (UPM) a través de su Centro de Innovación en Tecnología para el Desarrollo Humano (itdUPM) está propiciando la generación de conciencia, conocimiento y soluciones innovadoras que contribuyen al cumplimiento de los ...
Borrella Alonso de la Torre, María Inmaculada   +24 more
core  

Heat Transfer Enhancements Assessment in Hot Water Generation with Phase Change Materials (PCMs): A Review

open access: yesEnergies
The utilization of phase change materials (PCMs) in solar water heating systems (SWHS) has undergone notable advancements, driven by a rising demand for systems delivering superior performance and efficiency.
Diana Isabel Berrocal   +4 more
doaj   +1 more source

Locally adapted Arabidopsis thaliana accessions show transcriptomic plasticity in a multi‐timescale analysis of whole‐genome gene expression in a natural environment

open access: yesPlant Biology, EarlyView.
Natural Arabidopsis thaliana accessions showed remarkable plasticity in both life‐cycle phenology and whole‐genome gene expression patterns in in natura field experiments. Nevertheless, local adaptation in fitness‐related life‐history traits can also be detected at the whole‐genome gene expression level.
A. Martínez‐Pérez   +8 more
wiley   +1 more source

Innovación, diseño e ingeniería de productos plásticos [PDF]

open access: yes, 2010
La innovación, la investigación, el diseño, la aplicación de nuevas tecnologías y la sensibilización con el medio ambiente y la sociedad, es la base de este proyecto, que pretende ofrecer una alternativa a un producto ya existente, dotándolo de un ...
Galán Ponce, Pedro   +1 more
core  

An Application of Spectral Kurtosis to Separate Hybrid Power Quality Events

open access: yesEnergies, 2015
For the development of the future smart grid, the detection of power quality events is a key issue for the power system monitoring. Voltage sags, swells, harmonics (variations) and interruptions, which produce large losses for commercial and industrial ...
Juan José González de la Rosa   +4 more
doaj   +1 more source

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