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Desenvolvimento de transformador de distribuição de elevada eficiência e reduzida relação peso/potência empregando núcleo amorfo e óleo vegetal isolante
(Universidade Federal de Santa Maria, 2015-03-12)
The high amount of transformers connected to the Brazilian distribution system justifies the works and studies performed in order to improve the efficiency of these equipment. Any progress represents a significant improve ...
Controle hierárquico e adaptativo para aumento do desempenho operacional de reguladores de tensão em redes elétricas inteligentes
(Universidade Federal de Santa Maria, 2014-03-28)
The evolution of equipment, new functions and control algorithms, supervisory systems, automation and smart grids offer to utilities numerous conditions for improving the voltage profile and the rational use of its equipment ...
Estudo do equilíbrio líquido-líquido de sistemas contendo misturas de diesel/biodiesel/etanol/1-butanol
(Universidade Federal de Santa Maria, 2021-03-02)
Diesel fuel is a long-chain hydrocarbon mixture and its combustion results in emissions containing particulate matter (PM), hydrocarbons (HC), carbon monoxide (CO), carbon dioxide (CO2) and nitrogen oxides (NOx), which are ...
Aplicação de CO2 supercrítico na delaminação de um painel fotovoltaico visando a recuperação de materiais valiosos
(Universidade Federal de Santa Maria, 2020-08-31)
Photovoltaic panels are technologies that have been gradually increasing in the world market and, after their end of life, are considered as electronic waste. There are 250,000 metric tons of solar panel waste worldwide ...
Produção contínua de ésteres metílicos de ácidos graxos a partir do destilado da desodorização do óleo de soja e acetato de metila em condições supercríticas
(Universidade Federal de Santa Maria, 2021-10-06)
This work aimed to investigate the continuous production of fatty acid methyl esters (FAME) from Soybean Oil Deodorization Distillate (SODD) and Methyl Acetate (MA) under supercritical conditions. SODD has been characterized ...
Esterificação do ácido oleico e acetato de metila com zeólita WO3/USY: efeitos da impregnação do catalisador e modelagem cinética
(Universidade Federal de Santa Maria, 2020-01-20)
This work proposes the use of USY zeolite activated with tungsten oxide in the esterification of oleic acid with methyl acetate. Tunguistic acid was synthesized trought the acid treatment of sodium tungstate and was used ...
Desenvolvimento de materiais a base de quitina para aplicação na adsorção de corantes
(Universidade Federal de Santa Maria, 2021-02-24)
The environmental problems due to the accelerated industrialization of the last decades have caused in society the need to develop new technologies for the treatment of industrial waste. The textile industry stands out due ...
Extração com fluido supercrítico e extração assistida por ultrassom na obtenção de compostos antioxidantes produzidos por Diaporthe schini
(Universidade Federal de Santa Maria, 2020-03-06)
The Pampa biome that covers southern Brazil and part of Uruguay and Argentina has one of the richest
biodiversity in the world, which has not yet fully described by science. Part of this biodiversity are the
endophytic ...
Avaliação do carregamento e do comportamento térmico de transformadores de distribuição através da aplicação do método de estimação de estados
(Universidade Federal de Santa Maria, 2019-07-29)
The need to know the real state of operation of the Electrical Systems is one of the most important aspects in the scope of Smart Grids. To accomplish this, obtaining real-time data from a comprehensive monitoring model ...
Contribuições para a modelagem, analise, projeto e controle do conversor ressonante LLC driver de LED
(Universidade Federal de Santa Maria, 2021-06-11)
This work presents several contributions to the modeling, analysis, design, and control of the LLC
resonant LED driver. Initially, the LLC resonant LED driver dynamic model accuracy is improved by
taking into account ...