Estudo de um sistema varistor à base de 'SN''O IND.2' dopado com terras-raras

Pós-graduação em Química - IQ

Propriedades elétricas e modelagem da barreira de potencial do sistema varistor à base de SnO2-TiO2

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Varistores à base de SnO2: estado da arte e perspectivas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Desempenho de um sistema híbrido eólico-fotovoltaico de pequeno porte para energização rural

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Análise exergética e ecológica de um sistema compacto de cogeração operando com gás de síntese

The aim of this work is to make a qualitatively and ecologically evaluation of a compact cogeneration system that operates with synthesis gas obtained from a gasifier. Using the Eucalyptus Biomass as fuel, that passes through a wood gasifier (Drowndraft type) and supply the internal combustion engine. The compact cogeneration system is composed of two heat exchangers, an energy generator connected to an internal combustion engine and an absorption refrigeration system. The complete system is installed in the laboratory from the Energy Department at the University of Guaratinguetá. By the analysis related to the First and Second Thermodynamic Laws applied in this system, was possible to identify the mass flows in each point, energetic efficiency, irreversibility and exergetic efficiency. The components that have the biggest irreversibilities are the gasifier, followed by the internal combustion engine, which should be focused in future improvements. The system efficiency in energetic basis is 51,84% and in exergetic basis is 22,78%. Using the ecologic efficiency methodology was possible to identify the emissions rates, the pollution indicator associated to the combustion of the synthesis gas in the internal combustion engine. The ecologic efficiency considering the energectic analysis is 91,73%, while considering the exergetic analysis, 83,65%. It is concluded that the use of the synthesis gas in a compact cogeneration system is viable from the technical and ecological point of view, making possible to generate energy for isolated communities and promoting the decentralized electricity generation

Suplementação da dieta de bovinos de corte como estratégia do manejo das pastagens

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Comparação entre o índice de reprovação entre os sistemas de matrícula Seriado e Crédito da Faculdade de Engenharia de Guaratinguetá

The Engineering Education in Brazil is constantly changing since its inception always aiming to meet the market demand for this type of professional. To meet this market demand, the institutions of engineering education to bring within their organizations as the new curriculum guidelines Registration System. In 2008 the Faculdade of Guaratinguetá entered its new Registration System, from series to Credit. The failure rate for each system will be the basis for understanding what the best system for this institution

Introdução à identificação de sistemas utilizando o System Identification Toolbox do MATLAB em conjunto com o Arduino para o laboratório de controle linear

The education designed and planned in a clear and objective manner is of paramount importance for universities to prepare competent professionals for the labor market, and above all can serve the population with an efficient work. Specifically, in relation to engineering, conducting classes in the laboratories it is very important for the application of theory and development of the practical part of the student. The planning and preparation of laboratories, as well as laboratory equipment and activities should be developed in a succinct and clear way, showing to students how to apply in practice what has been learned in theory and often shows them why and where it can be used when they become engineers. This work uses the MATLAB together with the System Identification Toolbox and Arduino for the identification of linear systems in Linear Control Lab. MATLAB is a widely used program in the engineering area for numerical computation, signal processing, graphing, system identification, among other functions. Thus the introduction to MATLAB and consequently the identification of systems using the System Identification Toolbox becomes relevant in the formation of students to thereafter when necessary to identify a system the base and the concept has been seen. For this procedure the open source platform Arduino was used as a data acquisition board being the same also introduced to the student, offering them a range of software and hardware for learning, giving you every day more luggage to their training

Efeitos da injunção da base nas orientações interior e exterior e nas coordenadas do espaço objeto em imagens obtidas com a estéreo vídeo-câmara de um sistema móvel de mapeamento

In general, a land-based mobile mapping system is featured by a vehicle with a pair of video cameras mounted on the top and positioning and navigation sensors loaded in the vehicle. Considering the pair of video cameras mounted on the roof of the vehicle as a stereo camera pointing forward with both optical axes parallel to each other and orthogonal to the stereo base, whose length is 0.94 m, this paper aims at analyzing the interior and exterior camera orientation and the object point coordinates estimated by phototriangulation when the length constraint related to the stereo base is considered or not. The results show that the stereo base constraint has effect ouver the convergence estimation, but does it neither improves the object point coordinate estimation at significance level of 5% and nor it influences the interior orientation parameters. Finally, it has been noticed that the optical axes are not truly parallel to each other and orthogonal to the stereo base. Additionally, it has been observed that there is a convergence of approximately 0.5 degrees in the optical axes and they are not in the same plane (approximately 0.8 degrees deviation).

Substâncias húmicas: sistema de fracionamento sequencial por ultrafiltração com base no tamanho molecular

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

O Estado no sistema sociometabólico do capital: uma relação de complementaridade na base material

Pós-graduação em Ciências Sociais - FFC

Avaliação da resistência de união entre dentina preparada por laser e um sistema adesivo a base de silorano, variando a técnica de aplicação e umidade do substrato

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Um estudo sobre as boas práticas e principais dificuldades na implantação de um sistema de gestão de qualidade com base na ISO 9001 e seus reflexos na área ambiental

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desenvolvimento de um sistema computacional para monitoramento de parâmetros físicos na área de irrigação, com base na plataforma labVIEW

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O sistema estuarino do Delta do São Francisco-SE: análise ambiental com base no estudo de foraminíferos e tecamebas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)