940 resultados para cerâmicos tradicionais


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Os pombais são construções emblemáticas que têm assumido um papel importante no desenvolvimento sustentável do Nordeste Transmontano. Com este trabalho pretendese abordar os aspetos relacionados com a importância ambiental que estas construções tiveram e têm atualmente, quer na conservação das espécies, quer no ecoturismo ou na agricultura. A metodologia utilizada consistiu na pesquisa seleção e recolha de informação com recurso a fontes de natureza diversa: livros, revistas e fontes eletrónicas.

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Ceramic pigments that own mainly the spinel structure AB2O4 are becoming a matter of great scientific and technological interest due to the ability of accommodate different cations in its structure, allowing different dopings and thus obtaining different colors. Studies on ceramic pigments currently are being directed to the development of stable and pigments obtained at low temperatures and with greater reproducibility. This work aims at the use of inorganic pigments for applications in ceramic tiles, investigating the influence of doping and calcination temperature on the coloring pigments and ceramic glazes. the based pigments of CoCr2O4, CoAl2O4, Co0,8Zn0,2Cr2O4 and Co0,8Zn0,2Al2O4 were synthesized by a chemical route using commercial gelatin as organic precursor. The materials were characterized by thermogravimetric analysis (TG), X-ray diffraction (XRD), infrared spectroscopy (FTIR) spectroscopy scanning electron microscopy (SEM) in the UVVisible region and colorimetry. The results confirmed the feasibility of synthesis used, the route presented pigments crystal structures and the desired phases were obtained from 500 °C with increased crystallinity and the crystallite size. The pigments have hues ranging from green to violet according to their doping and calcination temperatures.

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The final quality of the works accomplished by the building construction industry depends directly on the quality of the materials supplied and used during all their phases of execution. The federal government participation and several state programs have established conditions to stimulate and require the increment of the quality level in the building construction industry´s product chain. These programs aim at the product conformity to the technical standards. Within this context, the evaluation program of the ceramic product conformity in Rio Grande do Norte state is assessing the conformity degree to Brazilian Technical Standards of ceramic bricks and tiles made in the ceramic production area in the state. In this work, is determine the degree of conformity of the sealing ceramic bricks made by some companies in different areas of the state, such as Assú, São Gonçalo do Amarante, Apodi, Parelhas, São José do Mipibu e Macaíba. Using the technical standards as a point of reference, we attempted to reproduce in the laboratory the experimental procedures to the analysis execution, according to the specifications. It was possible to determine that none of the evaluated samples are in strict conformity with the current technical standards, what reflects the real situation of the products available on the market.

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This work presents a new ceramic material obtained through the incorporation of solid waste from the steel industry and known as dedusting powder PAE - in ceramic formulations based on clay, potassium and sodium feldspars, kaolin and talc. Formulations were prepared with ceramic residue levels of 0% (basic mass - MB), 2%, 4% and 8%, subjected to firing at temperatures of 1000 ° C, 1050ºC, 1100ºC and 1150ºC for periods of 15 min. and 120 min. The physicchemical and mechanical properties of these ceramic formulations were determined based on the firing temperature, residence time in the oven and the percentage of waste. Since the physicochemical and mechanical properties of the sintered materials were evaluated by chemical analysis techniques (fluorescence X-rays - FRX), particle size distribution, specific surface area, apparent density, structural analysis by diffraction of X-rays (DRX) and characterization of surface by scanning electron microscopy (SEM). The magnetic response characteristics and the pattern of magnetic ferrites of the samples were analyzed in the assay conditions, having noticed that the saturation magnetic susceptibility depend on the sintering temperature of the material and it is associated with its crystal structure. From the analysis results, it was concluded that the ceramic material with better physical and mechanical properties is obtained when the 8% from PAE residue is added to standard formulation under the burn time of 15 minutes and temperature of 1150ºC.

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In our first chapter was recorded the perception of fishermen and gatherers of Patané about the absence of local forests, was collected a list of species considered locally as strategic use, the ethnoknowledge associated with those, and identify which of these plants are already perceived as scarce in the region. In the second chapter, was studied all species of plants known by the community, the associated knowledge and the various uses. Were used individual interviews, formal and semi-structured, that have been consecutively applied to sampled respondents not probabilistically by snowball. Were collected socioeconomic data of informants. A adequacy test was performed. Guided tours were conducted to gather photographs and samples witnesses of plants, all identified by the usual methods of botany. Excerpts of the interviews on perceptions appear by looking for consensual information. Some data were presented by descriptive statistics. Were mounted two lists of plants, one with the strategic use and one with all the species listed in the study. It was shown that knowledge about plants remains resilient despite the forest resources now no longer be available.

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In our first chapter was recorded the perception of fishermen and gatherers of Patané about the absence of local forests, was collected a list of species considered locally as strategic use, the ethnoknowledge associated with those, and identify which of these plants are already perceived as scarce in the region. In the second chapter, was studied all species of plants known by the community, the associated knowledge and the various uses. Were used individual interviews, formal and semi-structured, that have been consecutively applied to sampled respondents not probabilistically by snowball. Were collected socioeconomic data of informants. A adequacy test was performed. Guided tours were conducted to gather photographs and samples witnesses of plants, all identified by the usual methods of botany. Excerpts of the interviews on perceptions appear by looking for consensual information. Some data were presented by descriptive statistics. Were mounted two lists of plants, one with the strategic use and one with all the species listed in the study. It was shown that knowledge about plants remains resilient despite the forest resources now no longer be available.

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Traditional methods for dentures fabrication require a wide clinical and laboratory procedures; however, there is no scientific evidence that these methods can produce better results when compared with simplified methods. Aim: To evaluate the effectiveness of a simplified methods for denture fabrication, comparing it to the traditional one through masticatory efficiency and prosthesis quality. Method: A randomized controlled trial was conducted with 50 patients, 25 rehabilitated with prosthesis produced by traditional technique and 25 rehabilitated by a simplified technique. The masticatory efficiency was evaluated by colorimetric method, using chewing capsules. The quality of prosthesis was obtained using a reliable and reproducible instrument. Statistical analysis of the masticatory efficiency and quality of the prosthesis was obtained by the Mann-Whitney test. Results: 39 patients completed the study, 18 on traditional group and 21 on simplified group. There was no difference between groups for the masticatory efficiency (p = 0.835) and the quality of the prosthesis (p = 0672). The evaluation of the overall quality of the prosthesis according to oral conditions, demonstrated significant difference on the height of the mandibular ridges (p = 0.010) and mandibular muscle attachments (p = 0.039). Conclusion: Complete dentures fabricated by simplified method were considered effective from the point of view of masticatory efficiency and quality of prosthetics, with results similar to those made by the traditional method.

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Traditional methods for dentures fabrication require a wide clinical and laboratory procedures; however, there is no scientific evidence that these methods can produce better results when compared with simplified methods. Aim: To evaluate the effectiveness of a simplified methods for denture fabrication, comparing it to the traditional one through masticatory efficiency and prosthesis quality. Method: A randomized controlled trial was conducted with 50 patients, 25 rehabilitated with prosthesis produced by traditional technique and 25 rehabilitated by a simplified technique. The masticatory efficiency was evaluated by colorimetric method, using chewing capsules. The quality of prosthesis was obtained using a reliable and reproducible instrument. Statistical analysis of the masticatory efficiency and quality of the prosthesis was obtained by the Mann-Whitney test. Results: 39 patients completed the study, 18 on traditional group and 21 on simplified group. There was no difference between groups for the masticatory efficiency (p = 0.835) and the quality of the prosthesis (p = 0672). The evaluation of the overall quality of the prosthesis according to oral conditions, demonstrated significant difference on the height of the mandibular ridges (p = 0.010) and mandibular muscle attachments (p = 0.039). Conclusion: Complete dentures fabricated by simplified method were considered effective from the point of view of masticatory efficiency and quality of prosthetics, with results similar to those made by the traditional method.

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O jogo tradicional é conceituado por Lavega (2000) como praticas que sobreviveram ao longo do tempo, portanto foram transmitidos entre as distintas geraçoes. E jogo popular é aquele jogo muito praticado em uma determinada zona, sendo um dos conteúdos da Educaçao Física escolar, manifestaçao esta produzida pelo ser humano, assim como o esporte institucionalizado. Temos como objetivo analisar o ensino do jogo tradicional/popular nas aulas de Educaçao Física na Rede Municipal de Ensino de Santa Maria, tendo como base a forma como o Jogo tradicional/popular vem sendo tratado em aulas de Educaçao Física. A metodologia utilizada será o trabalho de campo. A coleta de dados terá como base uma entrevista semiestruturada com perguntas abertas e fechadas que será realizada a professores da rede municipal de Ensino desta mesma cidade. Essa investigaçao busca esclarecer como o conteúdo dos jogos tradicionais/populares vem sendo tratado nas aulas de Educaçao Física e também busca produzir conhecimentos sobre os jogos tradicionais/populares no qual possibilitará que se reelaborem bases para formulaçoes mais claras desta categoria

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Esse estudo tem como tema as Associaçoes Jogos Tradicionais, entendidas como espaço e tempo resultantes da reuniao de pessoas ou de grupos sociais em torno de um ou mais jogos tradicionais. Compreendemos essas manifestaçoes como parte da cultura corporal, criadas e recriadas pelos seres humanos no processo histórico, transmitidas de geraçao em geraçao e presentes em determinada cultura. Pesquisas anteriores, realizadas pelo Grupo de Pesquisa em Lazer e Formaçao de Professores (GPELF), identificaram que existe uma diversidade de Associaçoes de Jogos Tradicionais no Brasil. Nesse sentido, o objetivo desse estudo é compreender estes espaços de açoes onde sao desenvolvidos os jogos tradicionais no território brasileiro, suas características, abrangência, sujeitos envolvidos, jogos praticados e açoes desenvolvidas. Trata-se de uma pesquisa em andamento. Como procedimentos metodológicos, utilizamos pesquisa documental e entrevistas semiestruturadas. A partir das primeiras inserçoes no que tange à pesquisa documental, identificamos 98 Associaçoes no contexto brasileiro, entre elas estao: 15 federaçoes, 38 associaçoes, 22 clubes, 5 centros comunitários, 4 confederaçoes, , 4 sociedades, 3 ligas, e 7 outros. Constamos que dentre seus principais objetivos, estao a preservaçao de costumes e tradiçoes, a promoçao de cultura local e a defesa do patrimônio histórico

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O jogo tradicional é conceituado por Lavega (2000) como praticas que sobreviveram ao longo do tempo, portanto foram transmitidos entre as distintas geraçoes. E jogo popular é aquele jogo muito praticado em uma determinada zona, sendo um dos conteúdos da Educaçao Física escolar, manifestaçao esta produzida pelo ser humano, assim como o esporte institucionalizado. Temos como objetivo analisar o ensino do jogo tradicional/popular nas aulas de Educaçao Física na Rede Municipal de Ensino de Santa Maria, tendo como base a forma como o Jogo tradicional/popular vem sendo tratado em aulas de Educaçao Física. A metodologia utilizada será o trabalho de campo. A coleta de dados terá como base uma entrevista semiestruturada com perguntas abertas e fechadas que será realizada a professores da rede municipal de Ensino desta mesma cidade. Essa investigaçao busca esclarecer como o conteúdo dos jogos tradicionais/populares vem sendo tratado nas aulas de Educaçao Física e também busca produzir conhecimentos sobre os jogos tradicionais/populares no qual possibilitará que se reelaborem bases para formulaçoes mais claras desta categoria

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Esse estudo tem como tema as Associaçoes Jogos Tradicionais, entendidas como espaço e tempo resultantes da reuniao de pessoas ou de grupos sociais em torno de um ou mais jogos tradicionais. Compreendemos essas manifestaçoes como parte da cultura corporal, criadas e recriadas pelos seres humanos no processo histórico, transmitidas de geraçao em geraçao e presentes em determinada cultura. Pesquisas anteriores, realizadas pelo Grupo de Pesquisa em Lazer e Formaçao de Professores (GPELF), identificaram que existe uma diversidade de Associaçoes de Jogos Tradicionais no Brasil. Nesse sentido, o objetivo desse estudo é compreender estes espaços de açoes onde sao desenvolvidos os jogos tradicionais no território brasileiro, suas características, abrangência, sujeitos envolvidos, jogos praticados e açoes desenvolvidas. Trata-se de uma pesquisa em andamento. Como procedimentos metodológicos, utilizamos pesquisa documental e entrevistas semiestruturadas. A partir das primeiras inserçoes no que tange à pesquisa documental, identificamos 98 Associaçoes no contexto brasileiro, entre elas estao: 15 federaçoes, 38 associaçoes, 22 clubes, 5 centros comunitários, 4 confederaçoes, , 4 sociedades, 3 ligas, e 7 outros. Constamos que dentre seus principais objetivos, estao a preservaçao de costumes e tradiçoes, a promoçao de cultura local e a defesa do patrimônio histórico