Encontrados 9 documentos, a visualizar página 1 de 1
Parcerias como estratégia de desenvolvimento local: relatório da construção de ...
Costa, Telma de Vasconcelos da Graça eMestrado em Desenvolvimento, Diversidades Locais e Desafios Mundiais ; Este estudo analisa o processo de criação de um Grupo de Trabalho, na área da nutrição, no distrito de Caué, em São Tomé e Príncipe. Tendo por base os conceitos de desenvolvimento local e parceria, argumenta-se neste estudo que a criação de parcerias, com vista à promoção do desenvolvimento local, podem concretizar uma coordenação e colabor...
Diferenças na percepção da imagem corporal, no comportamento alimentar e no est...
Laus,Maria Fernanda; Moreira,Rita de Cássia Margarido; Costa,Telma Maria BragaINTRODUÇÃO: A literatura refere uma maior prevalência de transtornos alimentares em acadêmicas de cursos universitários nos quais a aparência física é importante, entre eles Educação Física e Nutrição. Supõe-se que pessoas preocupadas com seu peso e imagem corporal optem por essas áreas por terem um interesse pessoal pelo tema. O objetivo deste estudo foi avaliar a percepção da imagem corporal, o comportamento ...
A resonance Rayleigh scattering study of unlabeled and pyrene-labeled poly(acry...
Costa, Telma; Seixas de Melo, J.http://www.sciencedirect.com/science/article/B6TGS-4TVTK04-4/2/52a09901f70ff2c94360af23956381c5
Complex Formation between a Fluorescently-Labeled Polyelectrolyte and a Tribloc...
Costa, Telma; Melo, J. Seixas de; Miguel, Maria da G.; Lindman, Björn; Schillén, KarinThe association between a randomly pyrene labeled PAA polymer (PAAMePy55) and a PEO−PPO−PEO triblock copolymer (P123) in aqueous solutions of different NaCl concentrations and pHs has been studied by means of dynamic light scattering (DLS) and steady-state fluorescence spectroscopy at 40 °C. At acidic pH values, in the low P123/PAAMePy55 molar ratio regime (i.e., at low P123 concentrations), the relaxation time...
Association of a Hydrophobically Modified Polyelectrolyte and a Block Copolymer...
Costa, Telma; Schillén, Karin; Miguel, Maria da G.; Lindman, Björn; Melo, J. Seixas deBy using absorption and fluorescence (steady-state and time-resolved) techniques, the interaction between a poly(acrylic acid) (PAA), randomly grafted with pyrene (Py) units (PAAMePy55), and a triblock copolymer of poly(ethylene oxide) and poly(propylene oxide) (EO20PO68EO20, P123) was investigated. From the fluorescence data, it is shown that upon addition of P123 a decrease of the (pyrene−pyrene, Py−Py) intra...
The effect of gamma-cyclodextrin addition in the self-assembly behavior of pyre...
Costa, Telma; Melo, J. S. Seixas deThe interaction between poly(acrylic acid) polymers (PAA) of low- (2000 g/mol) and high- (450,000 g/mol) molecular weight (Mw) hydrophobically modified with pyrene (PAAMePy) and beta- and gamma-cyclodextrins (beta-CD, gamma-CD) was investigated with fluorescent techniques. The interaction with beta-CD promotes little variation in the spectral and photophysical behavior of the polymer, whereas significant change...
Fluorescence studies on the interaction between pyrene-labelled poly(acrylic ac...
Melo, J Sérgio Seixas de; Costa, Telma; Oliveira, Noémia; Schillén, KarinThe interactions, in aqueous media, between a pyrene-labelled polyelectrolyte poly(acrylic acid) (PAAMePy) with two different degrees of labelling and beta- and gamma-cyclodextrins (beta- and gamma-CD) were studied using absorption and fluorescence (steady-state and time-resolved) techniques. In addition to qualitative and quantitative parameters obtained from absorption and steady-state fluorescence spectra, t...
Fluorescence studies on the interaction between pyrene-labelled poly(acrylic ac...
Melo, J. Sérgio Seixas de; Costa, Telma; Oliveira, Noémia; Schillén, KarinThe interactions, in aqueous media, between a pyrene-labelled polyelectrolyte poly(acrylic acid) (PAAMePy) with two different degrees of labelling and beta- and gamma-cyclodextrins (beta- and gamma-CD) were studied using absorption and fluorescence (steady-state and time-resolved) techniques. In addition to qualitative and quantitative parameters obtained from absorption and steady-state fluorescence spectra, t...
Self-Assembly of a Hydrophobically Modified Naphthalene-Labeled Poly(acrylic ac...
Costa, Telma; Miguel, M. G.; Lindman, Björn; Schillén, Karin; Lima, J. C.; Melo, J. Seixas deThe solution properties of two water-soluble polymers, poly(acrylic acid) (PAA), covalently labeled with the fluorescent hydrophobic dye naphthalene (Np), have been investigated in water:organic solvent mixtures. The naphthalene chromophores have been randomly attached, onto the polymer, with two different degrees of labeling. Fluorescence measurements (steady-state and time-resolved) have been used to follow t...
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