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Interesterificação de óleo de soja para produção de ésteres metílicos de ácidos graxos catalisada por óxido de cálcio
(Universidade Federal de Santa Maria, 2018-08-02)
Price instability of fossil fuels and search for renewable energies have stimulated government
programs to increase the percentage of biodiesel in diesel. This biofuel is generally produced
by the transesterification ...
Estudo do comportamento à fadiga de misturas asfálticas aplicadas em campo por meio da teoria viscoelástica de dano contínuo
(Universidade Federal de Santa Maria, 2018-07-31)
The behaviour analisys of asphalt mixtures is extremely important in the paving cenarium, whose final objective is to improve the performance combined with resources saving. It is known that the fatigue cracking is the ...
Avaliação da iluminação natural de habitação multifamiliar de interesse social: Conjunto Residencial Videiras, Santa Maria, RS
(Universidade Federal de Santa Maria, 2018-08-27)
In the last few years, Brazil has experienced a considerable increase in the number of
buildings destined for the low-income population due to credit programs for housing
construction, in an attempt to reduce the large ...
Metodologia para análise do balanço energético usando estimador de estados e medição em tempo real
(Universidade Federal de Santa Maria, 2018-07-26)
With the advent of smart grid, it is expected a new design for operation and planning of the electrical systems, changing the way how we manage and relate to the distribution systems. The term Smart Grid is used as an ...
Avaliação do comportamento da retrorrefletividade em rodovia com micro revestimento asfáltico à frio
(Universidade Federal de Santa Maria, 2018-07-30)
More than one million people are killed annually around the world as a result of traffic accidents. In Brazil, this epidemic costs the public coffers 56 billion a year. More than half of the fatal accidents in Rio Grande ...
Controle inteligente do despacho de geração distribuída para atendimento dos limites de demanda de uma microrrede
(Universidade Federal de Santa Maria, 2018-03-28)
The use of distributed generation (DG) allied to smart grids offers a series of benefits for the electrical system and, consequently, the society that makes use of it. Specifically in the economic and planning context, ...
Análise de sensibilidade na metodologia nodal para o cálculo da tarifa de uso do sistema de transmissão
(Universidade Federal de Santa Maria, 2018-07-19)
The reform of the 90s resulted in a vast impact on the Brazilian electrical system, mainly due to privatizations that occurred in that decade. The opening in the energy market has de-verticalized the four sectors of the ...
Aplicação de ácidos orgânicos na recuperação de metais a partir de resíduos de baterias de íons de lítio e catalisadores automotivos
(Universidade Federal de Santa Maria, 2019-01-17)
In the last decades, hydrometallurgical processes have received considerable attention for the recovery of precious metals such as Platinum Group Metals (PGM), as well as recovery of metals with high added value from ...
Desafios e oportunidades dos projetos de energia renovável registrados no primeiro período do protocolo de Quioto
(Universidade Federal de Santa Maria, 2015-07-03)
10 years ago it entered into force global climate agreement Kyoto Protocol, as an attempt to
curb emissions of greenhouse gases (GHG) with the help of three flexibility mechanisms,
including the Clean Development Mechanism ...
Modulação phase disposition com algoritmo de sorting para conversores multiníveis simétricos em cascata
(Universidade Federal de Santa Maria, 2018-08-03)
This master thesis presents a modulation technique with sorting of the command
signals of semiconductor devices, applied to symmetric cascaded multilevel converters.
This technique, referenced here as Phase Disposition ...