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Análise da transferência de ondulação de baixa frequência em drivers de LEDs
(Universidade Federal de Santa Maria, 2019-03-01)
This work presents the analysis of low frequency ripple transmission from the bus voltage to the output current in LED drivers, in the power control stage. The buck, boost and buck-boost converters, operating in discontinuous ...
Modelagem para mensuração do risco tecnológico em ambientes de inovação
(Universidade Federal de Santa Maria, 2018-09-03)
The knowledge-driven economy, driven by the advancement of technology, provides a dynamic and competitive economic scenario, making organizations look for innovations to stay sustainable over time. Given this, the growing ...
Filtração de ceras aplicando diferentes tratamentos físicos na superfície de meios filtrantes
(Universidade Federal de Santa Maria, 2017-07-20)
The presence of inorganic substances in the composition of crude wax decreases its commercial value, requiring purification of the product. A new physical treatment on the surface of the filter media was carried out by ...
Avaliação do ciclo de vida (ACV) do etanol combustível com elevados teores de água
(Universidade Federal de Santa Maria, 2018-03-20)
The small-scale production of fuel ethanol has serious process-related energy efficiency problems. However, increasing the hydration content of fuel ethanol proposes an alternative to improve the energy balance of the ...
Produção e concentração de enzimas hidrolíticas a partir de Beauveria bassiana
(Universidade Federal de Santa Maria, 2018-08-27)
The fungus Beauveria bassiana has been prominent in the production of infection structures and in the synthesis of a cocktail of proteins, enzymes, organic acids and secondary bioactive metabolites, responsible for the ...
Produção de metabólitos antifúngicos e antibacterianos a partir do fungo Diaporthe schini
(Universidade Federal de Santa Maria, 2018-08-23)
Due to the emergence of resistance to the drugs used to treat diseases caused by fungi and bacteria, there is a growing need to identify new compounds that can be used in medicines. The compounds produced by endophytic ...
Avaliação do efeito da adição de raízes na erodibilidade de um solo arenoso
(Universidade Federal de Santa Maria, 2019-03-08)
The practice of introducing the use of vegetation in engineering works, for centuries, is used to strengthen the soil, protect and reduce erosion processes. However, a large part of the studies is devoted to investigating ...
Estudo de estabilidade de uma encosta em Faxinal do Soturno – RS
(Universidade Federal de Santa Maria, 2019-03-22)
In Rio Grande do Sul, are not uncommon records of landslides that affect the structure
of highways, especially during rainy seasons. On the RS 149 highway, between the
cities of Faxinal do Soturno and Nova Palma, there ...
Padrões de distribuição temporal das precipitações intensas no Rio Grande do Sul
(Universidade Federal de Santa Maria, 2019-03-08)
Rainfall design can be estimated by several methods. The most common approach is the
time redistribution of plots obtained from intensity-duration-frequency (IDF) relationships.
This redistribution may follow a synthetic ...
Análise da relação do patrimônio arquitetônico com a eficiência energética em edifícios históricos em Santa Maria, RS.
(Universidade Federal de Santa Maria, 2019-03-15)
Architectural heritage represents a material production as a way to express
pastsocieties identity, it is also a way to connect with values predecessors users.
Historical buildings represent an era culture and are an ...