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Itens para a visualização no momento 11-20 of 35
Comportamento mecânico, funcional e ambiental de misturas asfálticas porosas
(Universidade Federal de Santa Maria, 2019-10-07)
Road transportation is the main means of transportation in Brazil and it is also known
that about 90% of paved roads have asphalt concrete as a coating layer. When it
comes to OGFC (Open-Graded Friction Course) hot ...
Contribuição para a previsão empírico-mecanicista da irregularidade longitudinal e seus desdobramentos econômicos em pavimentos asfálticos
(Universidade Federal de Santa Maria, 2019-05-03)
The guarantee of ride quality conditions with safety and comfort is one of the main objectives during a road structure design. A road functional behavior is evaluated quantitatively by indexes that determine, among other ...
Determinação das características do solo visando o aproveitamento geotérmico como fonte renovável de energia
(Universidade Federal de Santa Maria, 2019-03-29)
Knowledge of the soil thermal characteristics is indispensable for dimensioning geothermal
exchangers for air conditioning or yet to decrease their electric consumption. The present
thesis evaluates the geothermal potential ...
Estudo de concretos com pozolanas submetidos à carbonatação em ensaios acelerado e natural monitorado por 20 anos
(Universidade Federal de Santa Maria, 2019-09-02)
Carbonation, a potentially aggressive chemical reaction to concrete, is a slow process and difficult to detect in the short term through accelerated testing. In this work were studied concretes with fly ash (CV) and rice ...
Contribuição ao controle sensorless de motores síncronos de ímãs permanentes
(Universidade Federal de Santa Maria, 2019-12-05)
This thesis presents contributions to sensorless control for permanent magnet synchronous
motors. A maximum torque per ampere strategy is used to generate the current
control reference in synchronous reference frame. ...
Impactos das atividades antrópicas na qualidade da água da bacia hidrográfica do rio Vacacaí Mirim – RS
(Universidade Federal de Santa Maria, 2019-08-02)
This study was carried out to analyze the impacts of anthropogenic activities on the water quality of the Vacacaí Mirim river basin, located in the municipality of Santa Maria - RS, which is a tributary of the dam (or ...
Estudo experimental de um compósito de argamassa utilizando cinza e casca de arroz, aplicado em blocos de vedação
(Universidade Federal de Santa Maria, 2019-05-10)
Sustainable Development is linked with a tripod: serving basic needs, shortage of natural resources and economic growth. In order to make it compatible with the principles of sustainability, this study focused on the ...
O efeito dos aditivos incorporador de ar e estabilizador de hidratação nas propriedades das argamassas estabilizadas
(Universidade Federal de Santa Maria, 2019-12-13)
entraining admixtures (AEA) and hydration stabilizing admixtures (HSA) modify the
properties of mortar. The main effect of an AEA is increased workability, while an HSA
extends the setting time. However, the full effects ...
Preparação de biochar a partir de matérias–primas alternativas e sua aplicação na adsorção de corantes
(Universidade Federal de Santa Maria, 2019-10-25)
Contamination of natural waters has been one of the great problems of modern society. The
textile and food sectors stands out especially due to the large amounts of effluents discharged
into the water bodies. Thus, ...
Metodologias não convencionais na extração de compostos bioativos de casca de bergamota
(Universidade Federal de Santa Maria, 2019-11-08)
Citrus fruits, produced in large quantities in Rio Grande do Sul, have been highlighted by the high
content of bioactive compounds they present. These components can be extracted from the residues
generated ...