Theoretical chemistry: current applications to photochemistry and thermochemistry

A historical perspective is given contrasting challenges and advances in theoretical chemistry at the time the first issue of Theoretical Chemistry Accounts appeared in 1962 and the progress achieved since then as expressed in current state-of-the-art applications in photochemistry and thermochemistry.

"Ernesto de tal" e suas duas versões

Este artigo tem por objetivo analisar o conto "Ernesto de tal", de Machado de Assis, sob a perspectiva histórica e social. Será objeto de estudo também a comparação entre as duas versões do conto; a primeira, publicada no Jornal das Famílias, e a segunda, publicada no livro Histórias da meia-noite. Por meio da apreciação do cotejo entre as duas versões do conto em questão, procuraremos ainda refletir sobre como Machado criava e reescrevia seus textos.

A critical analysis on "Active Learning" in the light of Cultural-Historical Activity Theory (CHAT): Implications to Physics Education and to experimental activities as a particular case.

This is a research paper in which we discuss “active learning” in the light of Cultural-Historical Activity Theory (CHAT), a powerful framework to analyze human activity, including teaching and learning process and the relations between education and wider human dimensions as politics, development, emancipation etc. This framework has its origin in Vygotsky's works in the psychology, supported by a Marxist perspective, but nowadays is a interdisciplinary field encompassing History, Anthropology, Psychology, Education for example.