Preservação, pesquisa e difusão do patrimônio educacional: o caso do Liceu de Humanidades de Campos (RJ)
In this article we describe and discuss the path tracked by the Research and Extension Group “Liceu de Humanidades de Campos: preserving and publicizing the identity, the memory, and the school culture in the community.” The trajectory of this group is made up of numerous and successive projects aimed at the preservation of the historical memory, as well as the production of scientific studies and dissemination of the educational heritage. Special attention is given to projects developed in the last phase, concerning the disclosure of assets and popularization of science. Our objective is to give subsidies that may encourage research groups, principals, teachers, and the community in general, in order to avoid oblivion of the historical and educational heritage that has greatly marked our society, but which has, in contrast, received very little attention from the public power.
Arquivos e educação: a construção da memória educativa
Os arquivos escolares motivam profundas preocupacoes relativamente a salvaguarda e preservacao dos seus documentos, que constituem instrumentos fundamentais para a historia da escola e a construcao da memoria educativa. A sua importância tem vindo a ser reconhecida, conduzindo a uma reflexao sobre a sua preservacao, as condicoes de instalacao, a organizacao correcta dos documentos e o acesso as informacoes que nele estao contidas. Os arquivos escolares constituem o repositorio das fontes de informacao directamente relacionadas com o funcionamento das instituicoes educativas, o que lhes confere uma importância acrescida nos novos caminhos da investigacao em educacao, que colocam estas instituicoes numa posicao de grande centralidade para a compreensao dos fenomenos educativos e dos processos de socializacao das geracoes mais jovens. Neste texto pretende-se reflectir sobre: o lugar dos arquivos escolares nas instituicoes educativas; os documentos, a sua natureza e as potencialidades para a investigacao em educacao; os arquivos escolares numa perspectiva interdisciplinar; os arquivos, a cultura escolar e a construcao da memoria educativa.
Brushite-collagen composites for bone regeneration.
Brushite-based biomaterials are of special interest in bone regeneration due to their biocompatibility and biodegradability; on the other hand, collagen is a well-known osteoconductive biomaterial. In the present study a new brushite-collagen composite biomaterial is reported. This new biomaterial was prepared by combining citric acid/collagen type I solutions with a brushite cement powder. The obtained biomaterial was a cement paste, with improved handling properties. The effect of collagen on the setting reaction of brushite cement was studied, and was found to speed up the cement setting reaction. The cement paste set into a hard ceramic material within 18.5+/-2.1min and had compressive strength similar to that of spongeous bone (48.9+/-5.9MPa in dry conditions and 12.7+/-1.5MPa in humid conditions). The combination of collagen with citric acid revealed an interesting synergistic effect on the compressive strength of the composite material. Moreover, this new biomaterial had excellent cohesion properties (ninefold better than brushite cement), and high cellular adhesion capacity (threefold higher than brushite cement). The composite biomaterial described in this study combines good handling properties, compressive strength, cohesion and cell adhesion capacity, along with the osteoconductive and biodegradable properties inherent in brushite and in collagen-based biomaterials.