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Projeto e implementação de um pré-regulador de fator de potência aplicado a lâmpadas fluorescentes t5 com fluxo luminoso variável
(Universidade Federal de Santa Maria, 2016-12-23)
In this master thesis, the development of an electronic ballast with variable luminous flux for
a T5 fluorescent lamp is presented. Several technics for the control of the power variation have
already been discussed in ...
Uso de modflow para simulação da hidrodinâmica de meios porosos em wetlands construídos
(Universidade Federal de Santa Maria, 2017-01-27)
Constructed wetlands (CWs) are artificial systems used for wastewater treatment, whose objective is to reproduce, under controlled conditions, the treatment mechanisms that occur in natural environments, through the ...
Influência da precipitação no uso do método silveira para bacias hidrográficas entre 800 a 1000 km²
(Universidade Federal de Santa Maria, 2017-01-26)
The increasing demand for water resources, for the most diverse purposes, has evidenced a still deficient scenario in relation to fluviometric monitoring, especially in river basins with areas smaller than 1000 km², in ...
Modelagem para mensuração da competitividade na geração de energia fotovoltaica
(Universidade Federal de Santa Maria, 2016-11-10)
The photovoltaics is seen internationally regarded as a very promising technology. It is estimated that Brazil currently has a high capacity for solar power generation. Furthermore, from a strategic point of view, Brazil ...
Ruído externo às salas de aula e sua relação com o desempenho cognitivo, rendimento escolar e indicadores de saúde de adolescentes: estudo de caso
(Universidade Federal de Santa Maria, 2016-08-24)
The school must provide a suitable environment so that students can perform their activities. Studies have shown that classrooms do not have satisfactory acoustic conditions, although noise, produced inside and outside ...
Produção de butanol a partir de etanol utilizando óxidos mistos de Mg e Al
(Universidade Federal de Santa Maria, 2016-09-30)
Butanol is an alcohol with a number of applications in various industries. It has diverse applications as solvent, and now shown to be an interesting substitute component for gasoline. His achievement is made from oil, but ...
Lógica fuzzy para avaliação de eficiência energética em sistemas de irrigação de lavouras de arroz
(Universidade Federal de Santa Maria, 2017-03-24)
Energy efficiency plays an important role in electric power systems, since a small percentage increment in efficiency may lead to significant financial and energy savings. In agricultural-based economy countries, large ...
Estudo comparativo entre semicondutores de silício e nitreto de gálio em circuitos de acionamento de leds
(Universidade Federal de Santa Maria, 2017-03-03)
This dissertation presents a comparative study about the performance of silicon (Si) and gallium nitride (GaN) semiconductors in drivers for light emitting diodes. Hereby, it is expected to provide the theoretical background ...
Avaliação de misturas asfálticas recicladas mornas com uso de ligantes convencional e modificado por polímero
(Universidade Federal de Santa Maria, 2017-03-30)
The growing concern with the environment, in recent years, awakens the study of new technologies in the field of paving. Less polluting technologies that minimize the degradation of the environment and that seek to meet ...
Análise dos serviços de tecnologia da informação para projeto de capacidade estratégica
(Universidade Federal de Santa Maria, 2017-03-31)
The Information Technology (IT) performs an important role in modern organizations and has became strategic to achieve their objectives. This role's change and the relevancy of IT determined the araising of the IT governance, ...