Buscar
Itens para a visualização no momento 1831-1840 of 4148
Especiação de compostos de enxofre, níquel e vanádio em cimento asfáltico de petróleo (CAP) e sua relação com os processos de envelhecimento
(Universidade Federal de Santa Maria, 2015-10-27)
The speciation of sulfur compounds in CAP is very important, considering that these compounds are responsible for oxidation processes in asphalt binders, modifying their chemical and physical characteristics. The aim of ...
Uso de diferentes metodologias na geração de funções de pedotransferencia para a retenção de água em solos do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2013-02-01)
Studies on the dynamics of water in the soil-plant-atmosphere such as water
availability cultures infiltration drainage and movement of solutes into the soil, require
knowledge of the relation between the water content ...
Uso de óleos essenciais de especiarias para controle de coliformes em linguiça toscana
(Universidade Federal de Santa Maria, 2015-07-17)
The food products deterioration by pathogenic microorganisms is a major problem especially in meat industries. Escherichia coli is a facultative anaerobic bacteria of intestinal origin, and is a cause of concern in the ...
Potencial de utilização do sensoriamento remoto para monitoramento da água do resevatório Passo Real
(Universidade Federal de Santa Maria, 2016-12-15)
The built of reservoirs provides progress by the exploitation and multiple use of water resources, but it also brings changes and impacts in the quality of water. One of the main interests in the use of products of remote ...
Ésteres combustíveis em motor de ciclo diesel sob condições de pré-aquecimento e variação no avanço de injeção
(Universidade Federal de Santa Maria, 2008-04-23)
The renewed interest in energy for biomass is supported by the need for different energy sources and the need to protect the environment. Recently, because of increases in
crude oil prices, limited resources of fossil oil ...
Técnicas de projeto para o reator eletrônico auto-oscilante empregando ferramentas de controle
(Universidade Federal de Santa Maria, 2004-08-30)
This work presents a design methodology and analyss of the selfoscillating electronic ballast used in fluorescent lamps. The self-oscillating electronic ballast is represented as a control system with a nonlinear behavior. ...
Desempenho e emissões de um motor agrícola ciclo diesel utilizando misturas de óleo diesel, biodiesel e etanol
(Universidade Federal de Santa Maria, 2021-01-29)
Blends of mineral diesel oil, biodiesel and ethanol are strategies for partial replacement of fossil fuel, applicable in compression ignition engines, without major adaptations. In this work, two bibliometric analyzes were ...
Estudos teóricos e de modelagem molecular in silico aplicados à interação entre a enzima delta-aminolevulinato desidratase e disselenetos de diarila
(Universidade Federal de Santa Maria, 2013-05-06)
Delta-aminolevulinic acid dehydratase (δ-ALA-D) is an essential metalloprotein found in several biological processes, since it is able to catalyze the formation of porphobilinogen (PBG), a precursor monopyrol of tetrapyrroles ...
Estudo experimental e simulado da cultura da soja em função de diferentes níveis de irrigação
(Universidade Federal de Santa Maria, 2011-03-18)
The efficient model preparation allows a crop forecast, better research
strategies and the correct allocation of a determinate crop in an environment,
according to weather conditions. With the techniques uses as the ...
Análise da combustão de misturas diesel/biodiesel em um motor de uso agrícola turboalimentado e com gerenciamento eletrônico
(Universidade Federal de Santa Maria, 2020-03-12)
This study involves a combustion analysis, through the experimental performance evaluation of an agricultural engine with electronic management, in response to the variation of different proportions of soy biodiesel added ...