Navegação Ciências Exatas e da Terra por Assunto "Nanoparticles"

Resultados 1-10 de 10

    • Caracterização e estabilidade físico-química de sistemas poliméricos nanoparticulados para administração de fármacos 

      Schaffazick, Scheila Rezende; Guterres, Silvia Stanisçuaski; Freitas, Liane Lucy de Lucca; Pohlmann, Adriana Raffin (2003) [Artigo de periódico]
      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 

      Prechtl, Martin Heinz Gerhard; Scholten, Jackson Damiani; Dupont, Jairton (2010) [Artigo de periódico]
      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 

      Muller, Claudia Regina; Haas, Sandra Elisa; Bassani, Valquiria Linck; Guterres, Silvia Stanisçuaski; Fessi, H.; Peralba, Maria do Carmo Ruaro; Pohlmann, Adriana Raffin (2004) [Artigo de periódico]
      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 

      Friedrich, Rossana Barcellos; Fontana, Márcia Camponogara; Beck, Ruy Carlos Ruver; Pohlmann, Adriana Raffin; Guterres, Silvia Stanisçuaski (2008) [Artigo de periódico]
      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 

      Schaffazick, Scheila Rezende; Pohlmann, Adriana Raffin; Mezzalira, Graziela; Guterres, Silvia Stanisçuaski (2006) [Artigo de periódico]
      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 

      Thesing, Anderson; Nascimento, José Edmilson Ribeiro do; Jacob, Raquel Guimarães; Ferreira, Jacqueline (2018) [Artigo de periódico]
      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 

      Feil, Adriano Friedrich; Migowski, Pedro; Scheffer, Francine Ramos; Pierozan, Matheus Daniel; Corsetti, Rodrigo Ruzicki; Rodrigues, Melissa Machado; Pezzi, Rafael Peretti; Machado, Giovanna; Amaral, Livio; Teixeira, Sergio Ribeiro; Weibel, Daniel Eduardo; Dupont, Jairton (2010) [Artigo de periódico]
      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 

      Biasi, Ronaldo Sergio de; Cardoso, Lúcia Helena Guimarães; Campos, José Brant de; Sanchez Candela, Dalber Ruben; Cunha, Joao Batista Marimon da (2009) [Artigo de periódico]
      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 

      Rossi, Liane Marcia; Dupont, Jairton; Machado, Giovanna; Fichtner, Paulo Fernando Papaleo; Radtke, Claudio; Baumvol, Israel Jacob Rabin; Teixeira, Sergio Ribeiro (2004) [Artigo de periódico]
      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 

      Beck, Ruy Carlos Ruver; Lionzo, Maria Ismenia Zulian; Costa, Tania Maria Haas; Benvenutti, Edilson Valmir; Ré, Maria Inês; Gallas, Marcia Russman; Pohlmann, Adriana Raffin; Guterres, Silvia Stanisçuaski (2008) [Artigo de periódico]
      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 ...