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Cinética da produção de butenos a partir de butanol empregando catalisadores ácidos
(Universidade Federal de Santa Maria, 2017-12-01)
to environmental requirements, new producing routes have been pursued and the butanol
dehydration reaction is one of the most promising. HZSM-5 zeolites and -alumina acid
catalysts were synthesized at different conditions ...
Impactos ambientais em área ocupada por necrópole no município de Caçapava do Sul-RS
(Universidade Federal de Santa Maria, 2017-10-10)
In the face of population growth, the natural resources are being overused by the inhabitants of the planet. Historically, sites for the allocation of cemeteries were chosen due to their low economic value, and without any ...
Geopolímero mesoporoso obtido a partir de metacaulim e cinza de casca de arroz como alternativa de adsorvente para remoção de corantes
(Universidade Federal de Santa Maria, 2017-08-11)
The industrial activity has contributed greatly to a significant increase in the concentrations of dyes in water, representing an important source of contamination of the water bodies, especially when we consider that such ...
Aproveitamento de resíduos do processamento de uva para a biossorção de corantes e prata
(Universidade Federal de Santa Maria, 2017-12-05)
In this work, the potential of wine industry wastes as alternative biosorbents to remove Brilliant Blue (BB) and Amaranth Red (AR) dyes as also Ag ions from aqueous media was investigated; all experiments were performed ...
Previsão do preço do cimento Portland e do aço no Rio Grande do Sul por meio de modelagem wavelet- ARIMA
(Universidade Federal de Santa Maria, 2017-08-21)
This study is a price analysis of two important civil engineering commodities in Rio Grande do Sul. It is based on the examination of each series composed of monthly prices of Portland cement and steel in order to predict ...
Método para a determinação de capacitâncias parasitas em sistemas eletromagnéticos
(Universidade Federal de Santa Maria, 2017-12-19)
This Doctoral Thesis presents a detailed study about stray capacitances in electromagnetic
systems, with a special focus on inductors and transformer windings. The main objective of
research is the development of a method ...
Avaliação toxicológica de solo contaminado com efluente sanitário
(Universidade Federal de Santa Maria, 2017-10-24)
The disposal of sanitary effluents without adequate treatment in the soil, entails numerous environmental consequences and risks to human health. The present study aimed to investigate the toxicological effects of soil ...
Concretos com misturas de agregado residual de construção e demolição (RCD) e pozolana, com ênfase na carbonatação
(Universidade Federal de Santa Maria, 2017-12-12)
Among the numerous environmental impacts caused by the various segments of the economy,
civil construction stands out as one of the sectors that consumes the most natural resources
and generates emissions to the environment, ...
Contribuições ao estudo de conversores CC–CC com processamento parcial de energia aplicados a sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2017-12-18)
This work presents some conceptual and practical contributions about the use of series-regulated
DC/DC converters in multi-string photovoltaic systems, which have been presented in the literature
as capable of performing ...
Conversores multiníveis modulares: contribuições ao estudo e ao desenvolvimento de sistemas de controle distribuídos
(Universidade Federal de Santa Maria, 2017-10-05)
This doctoral thesis presents contributions to the study and development of distributed
control systems applied to the Modular Multilevel Converter (MMC) operating
with a high number of submodules (SMs), which is the ...