Antonio G Souza

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Co-products from the juice processing of guava (CG), mango (CM) and barbados cherry (CB) were investigated with a view to their exploitation as a potential source of natural antioxidants. The ethanolic extracts were analyzed for total extractable phenolic content (TEP), DPPH radical scavenging activity (RSA-DPPH), ferric reducing antioxidant power (FRAP)(More)
This work had the objective of studying the pigment MgFe 2 O 4 obtained by the polymeric precursor method, which is based on the formation of a polymeric resin, followed by a heat treatment in order to obtain the final oxide. The powders were calcined between 500 and 1100 8C, and characterized by thermal analysis, X-ray diffraction, nitrogen adsorption,(More)
«Ferroelectric-dielectric tunable thin films heterostructures for applications in microwaves». Workshop NIMS-UR1 Materials and sustainable developments : issues and challenges of the 21st century, Rennes, 15-17 mai 2011 «Controlling the composition, structure and nanostructuration of thin films in the K-Ta-Nb-O system by pulsed laser deposition (conférence(More)
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