244 research outputs found
Ceibal en Inglés:ELT through videoconferencing in Uruguay
In 2013, Ceibal en InglĂ©s, a project through which English is taught in state schools through videoconferencing in Uruguay, was included in an international journal as an example of an innovative practice (Banegas, 2013). The article discussed the project rationale and described how lessons were planned and delivered to primary school learners through peer teaching. The project involved a remote EFL teacher and a classroom teacher with little knowledge of English. As a follow-up to that article, the aim of this paper is to explore and evaluate how such an innovative practice has continued its trajectory not only in primary but also in secondary education. Drawing on the authorsâ experience, the literature on the project itself, and language learning and technology, the article offers a summary of Ceibal en InglĂ©s and figures about its expansion. It also includes a discussion of the effects of Ceibal en InglĂ©s on English language learning, learner and teacher motivation, teacher professional development, and the interplay between technology-mediated learning and face-to-face learning. The paper finishes with remarks on project sustainability, benefits, and challenges
Chemoenzymatic Synthesis of Triazololactams Structurally Related to Pancratistatin
Four tricyclic lactams that structurally resemble alkaloids with the pancratistatin skeleton were synthetized from bromobenzene by a chemoenzymatic strategy. The sequence involved enzymatic dihydroxylation, efficient stereodirected oxidation of double bonds, inter- or intramolecular Huisgen cycloaddition, and a solvent-free cyclization. The complex structures were obtained in high chemical and optical purity and may be good candidates for biological testing.Fil: de la Sovera, Victoria. Universidad de la RepĂșblica. Facultad de QuĂmica. Departamento de QuĂmica OrgĂĄnica; UruguayFil: Suescun, Leopoldo. Universidad de la RepĂșblica. Laboratorio de CristalografĂa, Estado SĂłlido y Materiales; UruguayFil: Bellomo Peraza, Ana Ines. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Oficina de CoordinaciĂłn Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias ; ArgentinaFil: GonzĂĄlez, David. Universidad de la RepĂșblica. Facultad de QuĂmica. Departamento de QuĂmica OrgĂĄnica; Urugua
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