Estudo comparativo do desempenho de diferentes membranas oclusivas de Látex Natural no reparo ósseo

Introduction: In dentistry, alveolar bone resorption is a limiting factor in the well being of individuals directly interfering in the stomatognathic system, causing problems in the context of overall health. Aiming to promote biological methods that can stimulate bone regeneration, several biomimetic strategies have been developed by the use of diverse materials possible to the bone matrix, culminating in the development of techniques that promote such repair. Objective: This work is a comparative study of the performance of films made with latex as occlusive membrane for Guided Bone Regeneration (GBR) procedure in three preparations: Latex preserved in ammonia, produced by Latex rubber clones IAN873 and PR255 polymerized immediately after collection and without use ammonia as a preservative. Methods: Sixty Wistar rats were randomly divided into 4 groups of 15 animals in which bone defects of critical size (8mm diameter) were made surgically in the skull. Group A was treated by GBR through the membrane latex preserved with ammonia, Group B received the membrane made of latex from IAN873, Group C, the membrane clone PR255 and group D was not treated by GBR. After a period of 7, 15 and 50 days, 5 animals from each group were euthanized, and specimens containing bone defect collected for microscopic examination (descriptive histology and histomorphometry). Results: The results showed that after 50 days there was bone formation in higher proportions in group D (p <0.05, ANOVA followed by Tukey), suggesting that further experiments should be conducted to conclude about the presence of ammonia and the influence of kind of rubber. Conclusion: GOR is a procedure proven effective in the treatment of bone defects. Therefore, further experiments should be conducted to reach a conclusion regarding the presence of ammonia in the latex composition for the manufacture of membranes, as well as the difference induced by the species of rubber.

Glauber Rocha e a dimensão do confronto de ideias na cena midiática: estudo das estratégias do jovem crítico de cinema no Jornal da Bahia no final dos anos 1950

In late 1950, the young Glauber Rocha, still without having directed any of his films, becomes the main cultural critic of the Jornal da Bahia in Salvador, Bahia. His film critic activity falls within the symbolic local disputes and his texts published become an active voice in the cultural field of Bahia. With a considerable apparatus of the press in his favor, the performance of the young critic Glauber Rocha allows to discuss: the role of public intellectual and media production and dissemination of ideas by the newspapers at the turn of the 1950s to the 1960s, a time of intense political, social and cultural changes in Brazil.

New Business Models And Editorial Exemption: A Study On Service Journalism Based On Ecommerce Operations

The paper presents and discusses business strategies based on the association from journalistic content to new commercial practices in digital media. We describe selected examples from Folha de S. Paulo and El País involving service guides, links and ecommerce advertisements. The employed method provides content analysis to illustrate how the search for new business models in journalism may conduct its commercial activities beyond the conventional sale of advertising and subscriptions, including a discussion on the challenges and implications of this practice. The hypothesis is demonstrated by describing operations for the sale of tickets, books, music, and films related to news features and service journalism contents. The text finally wonders and discusses how such commercial actions may affect editorial autonomy and publishing exemption.

Investigação das propriedades ópticas, morfológicas e elétricas da heterojunção SnO2: Ce3+/ GaAs

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Síntese e caracterização de alvo de óxido de zinco dopado com alumínio

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Investigação das propriedades ópticas de ZnO e ZnO:Al

Pós-graduação em Ciência e Tecnologia de Materiais - FC

Prevulcanização do látex natural extraído da hancornia speciosa gomes (Mangabeira) e da hevea brasiliensis (seringueira)

Pós-graduação em Ciência dos Materiais - FEIS

Simulação da nanoestruturação de nanofolhas de óxido de grafeno reduzido através de dinâmica molecular

Pós-graduação em Ciência e Tecnologia de Materiais - FC

O uso da arte cinematográfica e suas vertentes dentro da sala de aula

Within the educational field we can identify an increasing number of possibilities and different ways to use unusual tools in the classroom. Teachers have used much more visual arts, pictures, photographs and films. This work aims to verify whether these tools are used properly, confirming if pedagogical activities with images and movies contribute positively to children's learning and ultimately how such learning takes place

Entram em cena as tecnologias de subjetivação: Corpos e Desejos na cinematografia brasileira pela ótica de diretoras de cinema no período de 2002 a 2012 e suas implicações para (des)construção dos gêneros

Pós-graduação em Psicologia - FCLAS

Características estruturais e físicas de material biodegradável produzido a base de zeína e fibras de milho e bananeira

Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE

Desinfecção fotoeletrocatalítica de águas contaminadas com Candida Parapsilosis utilizando eletrodos de W/WO3 em tratamento fotoeletrocatalítico

Pós-graduação em Química - IQ

Educação ambiental e o uso de materiais audiovisuais em teses e dissertações brasileiras em educação ambiental

Levando em conta o modelo de desenvolvimento vigente, consideramos o momento atual, de crise ambiental, como fruto do estabelecimento de uma postura antropocêntrica frente à natureza. Assim, a EA vem sendo apontada como uma das possibilidades de mudança deste cenário. A EA que propomos se apoia em três dimensões, estabelecidas por Carvalho (1989), com especial enfoque na dimensão valorativa. Dentre os recursos potencialmente relevantes para o desenvolvimento da EA, destacamos o cinema ficcional e documentário. Possuidor de uma linguagem própria, o cinema pode e deve ser utilizado, visto que sua presença na sociedade atual é intensa. Dentre as inúmeras qualidades que este recurso possui, consideramos que ele apresenta imenso poder de atrair a atenção dos alunos, uma vez que possui por si só técnicas únicas para tal finalidade. O uso do cinema em sala de aula, entretanto, exige alguns cuidados e preparativos por parte de quem se propõe a utilizá-lo com este fim, ou corre-se o risco de recair em um uso corriqueiro, a fins de entretenimento, e portanto sem qualquer finalidade educativa. As perguntas que permeiam o presente trabalho são: este assunto tem sido abordado em teses e dissertações voltadas a pesquisas envolvendo a EA? Se sim, quais fundamentações teóricas abarcam, e o que está sendo levando em consideração para sua execução? Que aspectos significativos têm sido apontados sobre esses recursos, que podem subsidiar os trabalhos de EA? Para a coleta das teses de interesse, recorreremos ao banco de dissertações e teses de educação ambiental desenvolvido pelo projeto de pesquisa interinstitucional denominado Educação ambiental no Brasil: análise da produção acadêmica (teses e dissertações) - EArte. Verificamos que, apesar de muitos trabalhos apontarem o uso de filmes em suas pesquisas, este uso ainda é feito de maneira superficial e é tido apenas como mais um recurso de apoio. Existe uma...

Propriedades estruturais e espectroscópicas de WO3 e WO3:Eu3+

Used as catalysts even in organic and inorganic molecules, as additives on catalysts, electrochromic films on smart windows the tungsten trioxide have been largely studied on the lasts decades, but there is just a few about it's luminescence. Using as precursors nitric acid and sodium tungstate the tungsten trioxide were been prepared thru wet process then treating on thermic and hydrothermal treatments. Where been evaluated the effects of methodology, nitric acid concentration, duration and temperature of treatments. The samples were characterized by X-ray diffraction (XRD), Raman scattering spectroscopy (RSS), Fourier transformed infrared spectroscopy, photoluminescence spectroscopy (PLS) and X-ray excited optical luminescence (XEOL). Hydrated phases of tungsten trioxide were obtained through hydrothermal treatments and the non-hydrated phases occur with thermic treatments. The acid concentration has the ability to determine the major phase formed as well the temperature determine the hydratation of the product. With lower temperatures dihydrate phase were preferable formed and with the rise of temperature, the water molecules were lost up to the fractionary hydratation and then the non-hydrated phase with higher temperatures depending on the atmosphere used on the thermal treatment. Doping the system with europium ions even substituting tungsten or in the interstices of the matrix were not been successful, as well the XEOL spectroscopy intensity were null and quite low for ultraviolet and visible excitation photoluminescence because of oxygen defect levels localized into the prohibited band.

Desenvolvimento de sensores de gás a partir de óxido semicondutor nanoestruturado

The present work aims to study one-dimensional nanomaterials semiconductors grown via by phase systems Grande oxides Technological Interest for applications in gas sensors. The Used material was tin oxide (SnO2) for their functional properties, and the grow method was the Polymeric Precursors. The films grown were the nanomaterials about substrates of alumina, deposited via spin coating technique, followed by heat treatment at 300C for 1 hour and 650C for 2 hours. Later the films of Performance sensors (sensitivity, speed response, selectivity, and stability) will be in avaliated in a hermetic chamber with controlled atmosphere and temperature. The synthesized materials were its structural and morphological properties characterized in atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (not have this result with Me). We sought to investigate one influence of different conditions for obtaining films (Variation Layers number) in structural and microstructural properties of semiconductors oxides. The synthesis method proved very effective, generating films with micro definitely, uniformity of the nanoparticles and hum high level of porosity, what makes the material of a viable final paragraph applicability