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Polycrystalline indium films in the percolation threshold regime: Time correlation between electric conduction and optical properties with film morphology
(IOP Publishing Ltd., 2014-02-21)
Polycrystalline indium films have been deposited at room temperature by electron beam evaporation on amorphous quartz substrates. Once deposited, electrical resistance and specular reflection of the films, for wavelengths ...
Organic amendments exacerbate the effects of silver nanoparticles on microbial biomass and community composition of a semiarid soil
(Elsevier, 2020-11-20)
Increased utilization of silver nanoparticles (AgNPs) can result in an accumulation of these particles in the environment. The potential detrimental effects of AgNPs in soil may be associated with the low fertility of soils ...
Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area
(MDPI AG, 2020-09-07)
Currently, metal nanoparticles have varied uses for different medical, pharmaceutical, and
agricultural applications. Nanobiotechnology, combined with green chemistry, has great potential
for the development of novel and ...
Biofabrication of Gold Nanotriangles Using Liposomes as a Dual Functional Reductant and Stabilizer
(American Chemical Society, 2021-03-23)
Negatively charged liposomes accomplished both functions as a reducing and stabilizing agent in the synthesis of gold nanotriangles (GNTs). Liposomes are based on a mixture of phospholipids phosphatidylcholine/phosphoglycerol, ...
Síntesis de nanoprismas ramificados de oro con potenciales aplicaciones biotecnológicas
(Universidad Nacional (Costa Rica), 2020)
Actualmente, las nanopartículas de oro son una interesante alternativa para ser utilizadas en diversas aplicaciones. Este trabajo se basó en la síntesis de nanopartículas anisotrópicas de oro, utilizando vesículas a base ...
Estudio del efecto toxicológico de nanopartículas de plata anisotrópicas en Escherichia coli y Staphylococcus aureus
(Universidad Nacional (Costa Rica), 2020)
Las nanopartículas de plata (AgNPs) son ampliamente utilizadas en la formulación de productos diversos. Este tipo de materiales constituye un agente complejo y relativamente nuevo, del cual sus propiedades toxicológicas ...
Increased fibroblast metabolic activity of collagen scaffolds via the addition of propolis nanoparticles
(MDPI AG, 2020-07-13)
Propolis natural extracts have been used since ancient times due to their antioxidant, anti-inflammatory, antiviral, and antimicrobial activities. In this study, we produced scaffolds of type I collagen, extracted from ...
Characterization and applications of silver nanoparticles-decorated electrospun nanofibers loaded with polyphenolic extract from rambutan (Nepelium lappaceum)
(Elsevier B.V., 2020-05)
Rambutan (Nephelium lappaceum) is a traditional fruit originally from Asia and now widely available in Central America. The rind of rambutan is rich in antioxidants, especially polyphenols, which have natural anti-inflammatory ...
Influence of iron oxide nanoparticles on the rheological properties of hybrid chitosan ferrogels
(Elsevier, 2009)
Magnetite nanoparticles have been successfully synthesized in the presence of chitosan using an in situ
coprecipitation method in alkali media. This method allows obtaining chitosan ferrogels due to the simul taneous ...
Evaluación del efecto de diferentes concentraciones de nanopartículas de plata sobre el crecimiento in vitro de plantas de banano Cavendish (Musa acuminata) del cultivar Grand Naine
(Universidad Nacional (Costa Rica), 2022)
Recientemente las nanopartículas se han implementado en muchas áreas de la investigación incluyendo la biotecnología vegetal. Por este motivo se ha estudiado el efecto de las nanopartículas metálicas como las de oro (AuNPs), ...