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Cognitive processes and math performance: a study with children at third grade ...
Campos, I. S.; Almeida, L. S.; Ferreira, A. I.; Martinez, L. F.; Ramalho, G.WOS:000318367000015 (Nº de Acesso Web of Science) ; The present study aims to examine the relationship between cognitive factors and mathematical achievement in primary education. Participants were 103 Portuguese third grade students, aged 8 and 9. All participants completed a battery for working memory (WMTB-C), a test of general intelligence (Raven's Progressive Color Matrices), a selective attention test (d...
Synthesis and structural characterization of the Ca2MnReO6 double perovskite
Corrêa,H. P. S; Cavalcante,I. P; Souza,D. O; Santos,E. Z; Orlando,M. T. D; Belich,H; Silva,F. J; Medeiro,E. F; Pires,J. M; Passamai,J. L; Martinez,L. GThe Ca2Mn1Re1O6 double perovskite has been prepared in polycrystalline form by using the encapsulated quartz tube method. The partial oxygen pressure inside the quartz tube revealed this to be a crucial synthesis parameter for the production of a single structural phase sample. This parameter was controlled using the ratio between ReO2 and ReO3 content and the filling factor parameter (ratio between mass and to...
Refinement of monoclinic ReO2 structure from XRD by Rietveld method
Corrêa,H.P.S.; Cavalcante,I.P.; Martinez,L.G.; Orlando,C.G.P.; Orlando,M.T.D.ReO2 presents two crystalline variants, with monoclinic and orthorhombic structures. The former is metastable and irreversibly transforms to an orthorhombic structure above 460ºC. The structure of the latter was determined from studies on monocrystalline samples, whereas for the monoclinic variant there are no single crystals available so far. It was found only one monoclinic variant and the structure associate...
Carcinoma indiferenciado (padrão insular) da tiroideia
Aparício, S; Martinez, L; Fernandes, R; Silva, S; Santiago, N
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