Chitosan was grafted with O-methyl-O⠲-succinylpolyethylene glycol and oleic acid after a two-step carbodiimide coupling. The structural and physicochemical characterization of the compounds confirmed the successful conjugation of the hydrophilic and hydrophobic moieties to the chitosan backbone. The amphiphilic chitosan derivative obtained allowed the formation of polymeric micelles with an average size of 1...
In this article, we discuss how some referencing strategies, especially direct anaphora, collaborate in the construction of sense of humor in the chronicles of Luiz Fernando Verissimo. We analyze the chronicle "Enemies", showing the role of direct anaphora, and we discuss how this analysis can be useful in Portuguese language teaching, as Verissimo texts are often included in several textbooks. Keywords: Refere...
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Submitted by Anastácia Oliveira (anastacia_oliveira@msn.com) on 2010-11-16T17:29:29Z No. of bitstreams: 1 Impacto_medida_provisória_santana.pdf: 68029 bytes, checksum: c54a8f73902bbd3a04156f05d101e23f (MD5); Approved for entry into archive by Thamara Nunes Reis de Alcantara null(thamara@stj.jus.br) on 2010-11-25T11:36:14Z (GMT) No. of bitstreams: 1 Impacto_medida_provisória_santana.pdf: 68029 bytes, checksum: c...
Plebeia nigriceps é um meliponíneo pequeno encontrado em abundância em algumas regiões do Rio Grande do Sul. Juntamente com Plebeia wittmanni e Plebeia julianii constituem-se em espécies próximas. Revimos o que se sabe sobre estas espécies e mostramos um exemplo de meliponicultor que conserva Plebeia nigriceps, tendo adquirido sobre ela conhecimentos empíricos de sua biologia e habilidades de uso de ninhos-arma...