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Mechanical behaviour of similar and dissimilar AA5182-H111 and AA6016-T4 thin f...
Leitão, C.; Leal, R. M.; Rodrigues, D. M.; Loureiro, A.; Vilaça, P.The tensile behaviour of similar and dissimilar friction stir welds in 1Â mm thick sheets of two aluminium alloys (AA5182-H111 and AA6016-T4) is analysed in this paper. The heterogeneity in properties across the welds was studied by performing microhardness tests and microstructural analysis. The tensile tests were performed in samples extracted longitudinal and transverse to the weld direction. It was found th...
Material flow in heterogeneous friction stir welding of thin aluminium sheets: ...
Leal, R. M.; Leitão, C.; Loureiro, A.; Rodrigues, D. M.; Vilaça, P.http://www.sciencedirect.com/science/article/B6TXD-4T8HHG4-4/2/0b8e12809caaa618052d7b27494c16ac
INFLUENCE OF PHOSPHATE CONCENTRATIONS ON GLUCOAMYLASE PRODUCTION BY Aspergillus...
Zaldivar-Aguero,J.M.; Badino Jr.,A.C.; Vilaça,P.R.; Facciotti,M.C.R.; Schmidell,W.The aim of this work was to study the influence of phosphate concentrations on glucoamylase production by the fungus Aspergillus awamori. In culture media containing cassava flour, different levels of phosphates were tested and the fungal responses to increasing levels (whether or not coupled to pH adjustment throughout the run) were assessed in terms of the resulting glucoamylase production. Phosphate incremen...
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