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Biocompatibily of acrylic bone cement

Bettencourt, A; Calado, A; Alfaia, AJI; Montemor, MF; Ferreira, MGS; Vale, FM; Monteiro, J; Castro, M

Date: 2005   |   Origin: Repositório da Universidade de Lisboa
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Conjugated linoleic acid (CLA) - biological active isomers

Alfaia, CM; Ribeiro, V; Guerreiro, T; Ribeiro, J; Quaresma, M; Alfaia, AJI; Prates, J; Castro, M

Date: 2005   |   Origin: Repositório da Universidade de Lisboa
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Quaternization reaction of aromatic heterocyclic imines in methanol - A case of...

Alfaia, AJI; Calado, ART; Reis, JCR

Accurate second-order rate constants were measured at 5 degreesC intervals in the temperature range 20-60 degreesC for the Menshutkin reaction of 1-methylbenzimidazole, 2-amino-1-methylbenzimidazole and N,N-dimethylaniline with iodomethane and iodoethane in methanol. In every case a good linearity in the Eyring plots was observed. Values for the activation enthalpy and entropy are reported. Analysis in terms of...

Date: 2000   |   Origin: Repositório da Universidade de Lisboa
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