Browsing Exact and Earth Sciences by Subject "Nanoparticles"
Now showing items 1-10 of 10
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Caracterização e estabilidade físico-química de sistemas poliméricos nanoparticulados para administração de fármacos
(2003) [Journal article]Polymeric nanoparticle systems such as nanocapsules and nanospheres present potential applications for the administration of therapeutic molecules. The physico-chemical characteristics of nanoparticle suspensions are ... -
Carbon-carbon cross coupling reactions in ionic liquids catalysed by palladium metal nanoparticles
(2010) [Journal article]A brief summary of selected pioneering and mechanistic contributions in the field of carbon-carbon cross-coupling reactions with palladium nanoparticles (Pd-NPs) in ionic liquids (ILs) is presented. Five exemplary model ... -
Degradação e estabilização do diclofenaco em nanocápsulas poliméricas
(2004) [Journal article]The parameters which affect the degradation and stabilization of diclofenac in suspensions of nanocapsules and of the corresponding spray-dried powders were investigated. Formulations were subjected to 14 months of storage ... -
Development and physicochemical characterization of dexamethasone-loaded polymeric nanocapsule suspensions
(2008) [Journal article]The influence of drug concentration, oil phase, and surfactants on the characteristics of dexamethasone-loaded nanocapsules was investigated. The best formulations were obtained at dexamethasone concentrations of 0.25 and ... -
Development of nanocapsule suspensions and nanocapsule spray-dried powders containing melatonin
(2006) [Journal article]Suspensões de nanocápsulas contendo melatonina foram preparadas pelo método de deposição interfacial e caracterizadas (tamanho, morfologia e eficiência de encapsulação). Foram avaliadas as influências do tipo de polímero, ... -
Eucalyptus oil-mediated synthesis of gold nanoparticles
(2018) [Journal article]The search for efficient methods for the synthesis of metal nanoparticles has been widely explored. Within this context, the use of biological materials such as plants, algae, bacteria and fungi has been reported to various ... -
Growth of TiO2 nanotube arrays with simultaneous Au nanoparticles impregnation: photocatalysts for hydrogen production
(2010) [Journal article]Um novo método para a fabricação de nanotubos (NTs) de TiO2 organizados e impregnados com nanopartículas (NPs) de ouro foi desenvolvido, e as propriedades estruturais, morfológicas e ópticas dos NTs obtidos foram investigadas. ... -
Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method
(2009) [Journal article]Nanocrystalline particles of magnesioferrite (MgFe2O4) were prepared by a sol-gel/combustion method using iron nitrate, Fe(NO3)3.9H2O, magnesium nitrate, Mg(NO3)2.6H2O, and citric acid, C6H8O7.H2O, and annealed for 2 hours ... -
Ruthenium dioxide nanoparticles in ionic liquids : synthesis, caracterization and catalytic properties in hydrogenation of olefins and arenes
(2004) [Journal article]A reação de NaBH4 com RuCl3 dissolvido no líquido iônico 1-n-butil-3-metilimidazólio hexafluorfosfato (BMI.PF6) é um método simples e reprodutível para a síntese de nanopartículas de RuO2 estáveis com distribuição estreita ... -
Surface morphology of spray-dried nanoparticle-coated microparticles designed as an oral drug delivery system
(2008) [Journal article]This paper was devoted to studying the influence of coating material (nanocapsules or nanospheres), drug model (diclofenac, acid or salt) and method of preparation on the morphological characteristics of nanoparticle-coated ...