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X-ray and UV imaging with multi-GEM/MHSP gaseous detectors
J.M. Maia; A. Breskin; R. Chechik; J.F.C.A. Veloso; J.M.F. dos SantosWe present the recent results regarding the application of cascades of GEMs and a MHSP in the detection and imaging of X-rays and UV-photons. The imaging system tested consisted in a micropattern gas detector based in multi-GEM or multi-GEM/MHSP electron multipliers, a 20´20 mm2 Wedge & Strip (W&S) readout electrode with 1.6 mm pitch positioned below and at close distance of a resistive electrode,...
Soil and climatic influence on the free and glycosidically bound volatiles of g...
Araújo, Isabel M.; Oliveira, J. M.; Maia, M. Odete; Baumes, Raymond L.The Vinhos Verdes Region is situated in the northwest of Portugal. The Atlantic Ocean and the relief markedly influence the climate. This region is in Viticultural Zone C I a) of the Winegrowing Regions of the European Communities. The produced wine is unique and its specific characteristics are mainly due to the climate and soil. The white Vinho Verde is softly alcoholic, with a delicate, fresh and fruity bouq...
Caracterização aromática de vinhos das castas Loureiro e Alvarinho: evolução du...
Oliveira, J. M.; Maia, J. Sousa; Maia, M. Odete; Baumes, Raymond L.
Alcalóides de Duguetia trunciflora Maas (Annonaceae)
Fechine,I.M.; Lima,M.A.; Navarro,V.R.; Cunha,E.V. L. da; Silva,M.S.; Barbosa-Filho,J.M.; Maia,J.G.S.From the ethanolic extract of the leaves and thin branches of Duguetia trunciflora Maas (Annonaceae) six alkaloids were isolated, being one benzylisoquinoline: reticuline¹, four tetrahydroprotoberberine:,tetrahydro-palmatine², tetrahydrojathrorrizine³, discretamine4, thaicanine5, and one berberine: jathrorrizine6. These alkaloids were identified through ¹H and 13C NMR spectroscopic technics. The alkaloids 1, 3,...
Free and bound aromatic components of Loureiro and Alvarinho grape varieties fr...
Oliveira, J. M.; Maia, M. Odete; Baumes, Raymond L.; Bayonove, Claude L.Free and glycosidically bound volatiles were quantified in five grape samples grown in 1996 from two of the most important Vitis vinifera varieties of Vinhos Verdes Region, Loureiro and Alvarinho. The most recommended sub-region for monovarietal wine production and an alternative sub-region were chosen. A third sample of Alvarinho was selected from a different and particular pebble soil. Forty compounds in the ...
Teneur en norisoprénoïdes en c13 des cépages Portugais loureiro et alvarinho
Oliveira, J. M.; Maia, M. Odete; Baumes, Raymond L.; Bayonove, Claude L.Les cépages portugais Loureiro et Alvarinho sont importants pour l'économie de la Région portugaise des "Vinhos Verdes". Ces deux variétés de raisin sont à l'origine de vins blancs monovarietaux réputés, présentant des caractéristiques aromatiques intéressantes. Ce travail a pour objectif d'approfondir les connaissances sur l'une des composantes du potentiel aromatique de ces deux cépages, les norisoprénoïdes e...
Application de bentonite aux moûts en fermentation : effet sur la formation et ...
Oliveira, J. M.; Maia, J. Sousa; Maia, M. Odete
Aplicação de bentonite no tratamento de vinhos da região dos vinhos verdes : an...
Araújo, M. Alberta; Oliveira, J. M.; Maia, J. Sousa; Oliveira, Pedro; Maia, M. Odete
Sensory evaluation of wines with controlled appelation of origin "Vinho Verde" ...
Araújo, M. Alberta; Oliveira, J. M.; Maia, J. Sousa; Oliveira, P.; Maia, M. Odete
Efeito da aplicação de bentonite sobre a componente aromática de vinhos verdes ...
Oliveira, J. M.; Maia, J. Sousa; Maia, M. Odete
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