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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 ...
Comportamento mecânico e influência da argamassa no modo de ruptura da alvenaria estrutural
(Universidade Federal de Santa Maria, 2016-11-24)
The literature indicates that mortar strength has little influence on concrete masonry strength, suggesting that the fresh state properties of the mortar are more relevant than the properties of the hardened mortar, and ...
Contribuições ao projeto de sistemas eólicos de efeito magnus com rastreamento da máxima potência
(Universidade Federal de Santa Maria, 2016-08-26)
This work deals with an unconventional wind energy conversion system, in which the wind turbine has rotating cylinders rather than traditional blades. These cylinders can be driven by a brushless DC motor. The turbine ...
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 ...
Modelagem conceitual de um veículo elétrico especificado para competições de economia de energia
(Universidade Federal de Santa Maria, 2016-12-23)
The present work is oriented to the proposition of a new vehicle concept, specified to
perform high efficiency in terms of energy consumption. The development and
detailing of this concept will take place through ...
Avaliação da resistência e da deformabilidade de quatro solos empregados em subleitos rodoviários no estado do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2016-03-03)
The pavement is considered a finite multiple layer system, subject to stresses, strains and displacements from the cyclical traffic requests. The subgrade, as it is the foundation of a pavement structure, must have a support ...
Análise das interações entre as principais commodities minerais brasileiras
(Universidade Federal de Santa Maria, 2016-08-26)
In the current market, the commodities trading directly influences the economy of a country. These goods are on the trade balance, which is made up by imports and exports of a country. This study aims to determine the ...
Obtenção de bioherbicida a partir de fungo isolado do bioma Mata Atlântica
(Universidade Federal de Santa Maria, 2016-08-22)
The search for decreases in losses of agricultural production makes it necessary to use pesticides to combat pests and weeds. The use of products derived from the chemical industry on disease control in agriculture has ...