Encontrados 8 documentos, a visualizar página 1 de 1
Regulação das emoções, padrões adaptativos de aprendizagem & satisfação com a v...
Pardal, Ana Cristina RibeiroEsta dissertação teve como principal objetivo traduzir e validar, para adolescentes portugueses, o Regulation of Emotion Questionnaire 2 (Phillips e Power, 2007), um instrumento que avalia a frequência com que os jovens usam estratégias funcionais e disfuncionais de regulação das emoções. O segundo objetivo é analisar a relação entre a perceção da regulação das emoções, a perceção de auto-eficácia académica e d...
Aplicação de zeólitos e outros catalisadores ácidos para a produção de combustí...
Pardal, Ana Cristina dos Reis MotaDissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para a obtenção do grau de Mestre em Engenharia Química e Bioquímica ; Este trabalho consistiu essencialmente no estudo da degradação térmica e catalítica de alcanos lineares de cadeia longa, sendo estes, n-C30, n-C40 e n-C50, como modelos para a compreensão da degradação do polietileno de alta densidade (PEAD), bem co...
Transesterification of vegetables oil in subcritical methanol conditions
Pardal, Ana Cristina; M. Encinar, J.; F. González, J.; Martínez, G.Comunicação apresentada na 18th European Biomass Conference and Exhibition, Lyon (França), Maio de 2010 ; In this study, transesterification of rapeseed oil using subcritical methanol and potassium hydroxide as catalyst was studied. The variables affecting the methyl ester yield during the transesterification reaction, such as the catalyst content, reaction temperature, reaction time and the molar ratio of alc...
Transesterification of rapeseed oil with methanol in the presence of various co...
Pardal, Ana Cristina; Encinar, J.M.; González, J.F.; Martínez, G.Comunicação apresentada no «Third International Symposium on Energy from Biomass and Waste», Venice(Italy), Novembro 2010 ; In this study, transesterification of rapeseed oil using various co-solvents(diethyl ether (DEE), dibutyl ether (diBE), tert-butyl methyl ether (tBME), diisopropyl ether (diIPE), tetrahydrofuran (THF), and acetone) was studied. The variables affecting the ester yield during transesterific...
Transesterification of vegetables oil in subcritical methanol conditions
Pardal, Ana Cristina; M. Encinar, J.; F. González, J.; Martínez, G.Comunicação apresentada na 18th European Biomass Conference and Exhibition, Lyon (França), Maio de 2010 ; In this study, transesterification of rapeseed oil using subcritical methanol and potassium hydroxide as catalyst was studied. The variables affecting the methyl ester yield during the transesterification reaction, such as the catalyst content, reaction temperature, reaction time and the molar ratio of alc...
Transesterification of rapeseed oil with methanol in the presence of various co...
Pardal, Ana Cristina; Encinar, J.M.; González, J.F.; Martínez, G.Comunicação apresentada no «Third International Symposium on Energy from Biomass and Waste», Venice(Italy), Novembro 2010 ; In this study, transesterification of rapeseed oil using various co-solvents(diethyl ether (DEE), dibutyl ether (diBE), tert-butyl methyl ether (tBME), diisopropyl ether (diIPE), tetrahydrofuran (THF), and acetone) was studied. The variables affecting the ester yield during transesterific...
Synthesis and spectroscopic characterisation of n-alkyl quaternary ammonium sal...
Pardal, Ana Cristina; Ramos, S.S.; Santos, P. F.; Reis, L. V.; Almeida, P.The synthesis and spectroscopic characterisation of some representative N-alkylsubstituted quaternary ammonium salts derived from benzothiazole, benzoxazole, benzoselenazole, indole and quinoline are described. These heterocyclic salts, bearing an activated methyl group in the 2-position in relation to the nitrogen atom and N-methyl, -pentyl, -hexyl and -decyl chains, are typical precursors of cyanine dyes.
Synthesis and spectroscopic characterisation of n-alkyl quaternary ammonium sal...
Pardal, Ana Cristina; Ramos, S.S.; Santos, P. F.; Reis, L. V.; Almeida, P.The synthesis and spectroscopic characterisation of some representative N-alkylsubstituted quaternary ammonium salts derived from benzothiazole, benzoxazole, benzoselenazole, indole and quinoline are described. These heterocyclic salts, bearing an activated methyl group in the 2-position in relation to the nitrogen atom and N-methyl, -pentyl, -hexyl and -decyl chains, are typical precursors of cyanine dyes.
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