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Structural characterisation and mechanical stability of titanium substituted me...
P.C. Galacho; M.M.L. Ribeiro Carrott; J. Valério; P.J.M. Carrott; J.M. Valente NabaisMesoporous silica and titanium SBA-15 samples with different Si/Ti molar ratio were prepared by direct one-step synthesis under strongly acidic hydrothermal conditions. The materials were characterised by X-ray diffraction, nitrogen adsorption at 77K. The Si/Ti values of the final calcined materials were determined by ICP analysis. It was found that all samples presented 2-D hexagonal structures with high degre...
Efectividade de um programa de reabilitação pulmonar na tolerância ao exercício...
Couto, R; Fonseca, A; Martinho, C; Sequeira, M; Valério, P
Crescer com paralisia cerebral
Alves, A; Cadete, A; Figueiredo, H; Gabriel, C; Jacobsohn, L; Oliveira, A; Patinha, D; Valério, P
Energy-dispersive x-ray fluorescence analysis of modern coloured glasses from M...
Matos, Antonio Pires de; Valério, P; Markowicz, A; Kregsamer, P; Araújo, M F; Chinea-Cano, E; Carvalho, CX-Ray Spectrom. 2003; 32: 396–401 ; The elemental composition (K, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Ba, Nd and Pb) of modern coloured glasses was obtained by energy-dispersive x-ray fluorescence (EDXRF) spectrometry. This nondestructive technique is frequently used in the analysis of historical glass objects. Two reference glasses were also measured to assess the overall accuracy of the EDXRF met...
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