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Fracionamento da fração sólida obtida na pirólise de resíduos plásticos utilizando destilação molecular de filme descendente
(Universidade Federal de Santa Maria, 2017-08-29)
The large generation of plastic waste entails the need for recycling methods for the reduction and recovery of these materials. Molecular distillation technology is a viable process to separation high value-added products. ...
Comparação do processo de regeneração natural em áreas com diferentes usos do solo
(Universidade Federal de Santa Maria, 2019-03-15)
Natural regeneration is fundamental for the recovery of degraded areas and maintenance of forests, because
through it occurs the replacement of local species and the emergence of others, guaranteeing the continuity ...
Hidrólise ácida de biomassa assistida por ultrassom para obtenção de furfural
(Universidade Federal de Santa Maria, 2017-07-12)
In this work, the applicability of ultrasound (US) for synthesis of furfural from biomass was investigated. Several US systems (baths, probes and a cup horn system) with different frequencies and power were evaluated (from ...
Diretrizes sobre os limites de emissões de poluentes de motores de máquinas agrícolas no Brasil
(Universidade Federal de Santa Maria, 2018-03-08)
Agriculture is directly associated with climate change issues and is one of the main sectors of the economy responsible for global Greenhouse Gas (GHG) emissions. Part of the emissions comes from the burning of fossil fuels ...
Modelagem e controle do conversor DAB para interface entre banco de baterias e sistema elétrico de potência
(Universidade Federal de Santa Maria, 2017-08-07)
This Master's Dissertation presents the development of a Dual Active Bridge (DAB) converter for charging a battery bank, which is connected to a DC bus, which is connected to the electric power system by means of an inverter. ...
Projeto e análise de observadores adaptativos aplicados ao controle sensorless de máquinas síncronas de ímãs permanentes
(Universidade Federal de Santa Maria, 2018-08-06)
This master dissertation presents contributions to the study, development, and design
of adaptive observers applied to the estimation of rotor speed of permanentes magnet
synchronous machines. The rst proposed technique ...
Análise de modelos matemáticos para o problema de marketing direto com oferta de produtos
(Universidade Federal de Santa Maria, 2019-03-15)
The increasing complexity of modern business environments and the vast volume of data available
make it necessary to use advanced models and computerized methods in organizations. With
competitiveness increasing rapidly, ...
Adaptação de usina para reciclagem à quente e avaliação laboratorial das misturas asfálticas produzidas
(Universidade Federal de Santa Maria, 2019-05-30)
Brazilian asphalt pavements have suffered over the years, with the increasing volume
of traffic, structural and functional deficiencies requiring continuous maintenance,
affecting, also, the comfort and safety of users. ...
Controle de demanda e formação de microrredes com grupos moto-geradores distribuídos
(Universidade Federal de Santa Maria, 2019-04-16)
The present work developed a methodology that was applied in a study that had as a starting point the peak shaving of an electrical installation, aiming at the reduction of costs with the energy bill. To achieve this, the ...
Desenvolvimento de um compósito de resíduo de poliuretano e casca de arroz
(Universidade Federal de Santa Maria, 2019-05-23)
Composites made from renewable sources are replacing commonly used materials in various industrial segments, fully meeting their functional and aesthetic requirements demanded by the products. Focusing on techniques, ...