Encontrados 5 documentos, a visualizar página 1 de 1
Infecção recorrente neonatal por Estreptococo do grupo B
Silva, Gisela; Marcos, Carlos; Lira, Sónia; Pereira da Silva, FranciscoO Estreptococo do grupo B (SGB) é a principal causa de doença invasiva neonatal nos países desenvolvidos. A infecção recorrente pelo leite materno contaminado é uma entidade rara, que deve ser pesquisada na presença de infecção tardia ou recorrente.Recém-nascido internado aos oito dias de vida por bacteriémia sem foco a SGB reinternado aos 22 dias de vida por sepsis com meningite pelo mesmo agente, também isola...
Gonçalo M. Tavares: o despojamento da razão como interrogação da impossibilidade
Maria Madalena Marcos Carlos Teixeira da SilvaOne of the most particular features of O Senhor Valéry, from Gonçalo M. Tavares, is the originality of its creative processes, along the line of the homage trend underlying the architecture of “The neighbourhood”. Investing on the centrality of a unique main character, the author builds fictional spaces where he recreates the main features of the summoned authors, with surprisingly meaningful results. This stud...
Candida tropicalis CE017: a new Brazilian enzymatic source for the bioreduction...
Vieira,Gizelle A. B.; Araujo,Daniel M. de Freitas; Lemos,Telma L. G.; Mattos,Marcos Carlos de; Oliveira,Maria da Conceição F. de; Melo,Vânia M. M.The reactivity and stereoselectivity showed by a new strain of Candida tropicalis in the reduction of prochiral ketones have been compared with the ones previously attained in our laboratory using microorganisms from the Brazilian biodiversity. In this manner, Candida tropicalis has demonstrated its versatility as stereoselective agent in the bioreduction of a series of aromatic ketones. These prochiral compoun...
Alcaloides iboga de Peschiera affinis (Apocynaceae) - Atribuição inequívoca dos...
Santos,Allana Kellen L.; Magalhães,Ticiane S.; Monte,Francisco Jose Q.; Mattos,Marcos Carlos de; Oliveira,Maria Conceição F. deSix known alkaloids iboga type and the triterpen α- and β-amyrin acetate were isolated from the roots and stems of Peschiera affinis. Their structures were characterized on the basis of spectral data mainly NMR and mass spectra. 1D and 2D NMR spectra were also used to unequivocal ¹H and 13C chemical shift assignments of alkaloids. The ethanolic extract of roots, alkaloidic and no-alkaloidic fractions ...
Aspectos mecanísticos da adição de Michael
Mattos,Marcos Carlos de; Marzorati,LilianaThe Michael addition reaction has been reported as a conventional nucleophilic process. However, more recently, alternative mechanisms involving electron transfer between acceptor and donnor species have been proposed.
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