999 resultados para Scheelita. Resíduo de scheelita. Cerâmica vermelha. Argilas. Propriedades tecnológicas
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Engenharia Mecânica - FEB
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The project aims to develop ceramic compounds with gradients of the mechanical properties, using the molding technique with commercial starches. To understand the process of interaction between starch and ceramic powders, the proposed methodology involves viscometry tests (up to 200 °C). Viscometric assays were carried out with slurries of alumina, titania and aluminum titanate with potato starch, cassava and corn. The specimens were tested for dilatometry, thermomechanical, thermal shock, mechanical and characterization by SEM. The ceramic powders and starches were analyzed using the optical microscope to measure the size of these. It was made of th kinetics of starch gelatinization and titania with the cornstarch in theoptical microscope to observe how the grains of starch behaved in welling
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Engenharia Mecânica - FEG
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Pós-graduação em Odontologia Restauradora - ICT
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Pós-graduação em Geociências e Meio Ambiente - IGCE
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Society's change of parameters for health and aesthetics has resulted in an increased demand for dental treatments. Nowadays, ceramics systems have shown a substantial development, becoming more reliable and predictable. Dental ceramics, besides being chemically stable, present excellent optical properties when compared to dental structures, thus assuring a special position in the list of aesthetic restorative materials. OBJECTIVE, CASE REPORT AND CONCLUSION: This article describes a successful clinical procedure involving the anterior teeth aesthetics, which were restored with all-ceramic crowns (IPS e.max® Ivoclar Vivadent).
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Pós-graduação em Química - IQ
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Engenharia Civil e Ambiental - FEB
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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The demand for esthetic restorations has resulted in an increased use of dental ceramics and is the main alternative restorative material to tooth structure due to its favorable properties. Therefore, the aim of this work is to study the evolution of ceramic systems, involving different types and properties, indications, and clinical issues as aesthetic, cementing and longevity. In a detailed and advanced search in the database PubMed, 98 articles were found using the following key words: dental porcelain dental all-ceramic and ceramic according to the criteria for inclusion and exclusion left only 35 articles for review. Several ceramic systems are available in the market, making the prosthetic professionals need a constant recycling about their properties and directions, since good results are due to the selection of the best material for a particular case in all the skill of the practitioner.
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A produção de produtos derivados de madeira e bambu vem crescendo nos últimos anos na busca de um aproveitamento mais racional dessas matériasprimas. Este trabalho tem por finalidade, o estudo da aplicação de resíduos do processamento do café em um painel MDP. Os painéis MDP foram produzidos com partículas de bambu da espécie Dendrocalamus giganteus e adição de partículas de casca de café na camada intermediária do painel, unidas por resina poliuretana à base de mamona. A caracterização físico-mecânica foi realizada baseando-se nas especificações da NBR 14810-3 (2006). Os resultados obtidos foram comparados com a norma brasileira NBR 14810-2 (2006), resultando em valores próximos aos comercialmente encontrados.