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Itens para a visualização no momento 2741-2750 of 3386
Esterificação catalítica de ácido acético e glicerol para a produção de aditivos de combustível
(Universidade Federal de Santa Maria, 2022-09-02)
Biodiesel production through the transesterification route is on the rise, as a result, glycerol, a low-cost by-product of biodiesel, has become more saturated in the international market. A potential solution to this ...
Análise da distribuição espacial da leptospirose na sub-bacia hidrográfica do Arroio Cadena, Santa Maria, RS, no período de 2001 à 2003
(Universidade Federal de Santa Maria, 2004-07-16)
Adsorventes compostos de ferro, alumínio e lantânio: síntese, caracterização e aplicação na remoção de fluoretos
(Universidade Federal de Santa Maria, 2022-11-11)
The use of groundwater to obtain water for human consumption is an alternative for places where there is no nearby surface spring available, or where there is no water treated by concessionaires being distributed to ...
Produção de biodiesel a partir de matéria-prima com alto teor de acidez: modelagem cinética e termodinâmica, simulação e otimização
(Universidade Federal de Santa Maria, 2022-08-25)
This work proposes to investigate the methyl esters production through the transesterification reaction of oleic acid with methyl acetate catalyzed by niobium phosphate. For the autogenous batch reaction system, at high ...
Recuperação seletiva de ouro de pinos de placa de circuitos impressos empregando nanofibras funcionalizadas com Cyanex 272
(Universidade Federal de Santa Maria, 2022-08-31)
Advances in technological development mean that the recovery of rare and strategic
metals from secondary sources has become essential, due to the high demand for these metals
in the production of electronic equipment. ...
Avaliação do processo sequencial de hidrólise e liquefação hidrotérmica do sabugo de milho
(Universidade Federal de Santa Maria, 2022-08-22)
The growing energy demand and limitations in the use of fossil fuels encourage the research of different renewable energy sources, such as agro-industrial residues. The corn crop in Brazil corresponds to 40% of the national ...
MeSegHI: um método de segmentação para o processamento linear e não-linear de imagem
(Universidade Federal de Santa Maria, 2006-11-24)
This research aims to develop the hybrid segmentation s method which uses two techniques: linear mean-shift and non-linear image foresting transform watersheds (IFT). To implement this method the reduced color set was used, ...
Análise do necropercolado em diferentes meios hidrogeológicos ocupados por cemitérios
(Universidade Federal de Santa Maria, 2022-10-26)
Even after death, human beings continue to generate contaminants in the form of necroleachate,
which may contain heavy metals and a series of other contaminants, altering the natural
characteristics of water and soil. ...
Modelagem e previsão por meio de metodologia Box & Jenkins: uma ferramenta de gestão
(Universidade Federal de Santa Maria, 2006-12-11)
Independently of the company size it is necessary to establish goals, parameters and strategies. It is important to have guidance, a plan that conducts the actions for the
present as a way to reach the goals for the future. ...
Análise de potenciais perigosos gerados em redes elétricas que usam o solo como meio condutor
(Universidade Federal de Santa Maria, 2022-03-21)
Electrical grounding is essential for an electric power distribution system, even more so in
networks with ground return. Amid the expansion of rural networks, the cost of a three-phase
power grid can make the project ...