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Itens para a visualização no momento 1491-1500 of 3381
Síntese de compósito de carbono a partir de resíduo de vitivinicultura para adsorção de contaminantes emergentes
(Universidade Federal de Santa Maria, 2022-02-25)
This work proposed the synthesis of a carbon composite (CC) chemically activated with ZnCl2. This CC was obtained from the pyrolysis of composted viticulture residue. The material was characterized by FT-IR (Fourier transform ...
Métodos de bloqueio por oscilações de potência: uma análise em linhas de transmissão de três terminais
(Universidade Federal de Santa Maria, 2022-03-07)
The disturbances resulting from power swing (OP) cause, in a harmful way to the
electrical power system (SEP), acceleration or delay in the rotor angle between
synchronous generators in relation to synchronous frequency, ...
O estudo das topologias básicas de conversores híbridos CC-CC impedância série
(Universidade Federal de Santa Maria, 2022-03-16)
This work contains the study of basic topologies of hybrid converters classified as serious impedance, the converters presented here are said to be hybrid because they associate two technologies, the switched converters ...
Metodologia para simulações de arcos elétricos aplicada ao estudo de energia incidente em sistemas elétricos de potência
(Universidade Federal de Santa Maria, 2022-01-27)
Electric arcs are phenomena that occur when the ionization of the air is sufficient
to allow the flow of electric current, which can occur due to the separation of energized
contacts, such as during the opening of switching ...
Viabilidade de aplicação de sistema solar passivo de aquecimento de ar através de ganho isolado de calor para a zona bioclimática 2 brasileira
(Universidade Federal de Santa Maria, 2018-08-29)
The passive solar system by isolated heat gain is characterized by collecting and storing solar radiation in thermally isolated spaces, the solar collectors. The heat flow occurs by convection of the air. The main objective ...
Conversor DAB ressonante como opção para carregadores on-board de veículos elétricos
(Universidade Federal de Santa Maria, 2022-02-23)
The environmental need in the use of renewable energy sources, just as the reduction
in greenhouse gas emissions put electric vehicles as the great solution in the
transportation market for the coming years. Parallel to ...
Nova estrutura dinâmica para a formação de tarifas de transmissão com sinais econômicos adequados aos agentes de consumo e geração de eletricidade
(Universidade Federal de Santa Maria, 2022-01-21)
The energy transition intensifies two limitations verified on traditional transmission cost
allocation (TCA) methods employed around the world: 1) lack of coordination between
transmission pricing and load evolution, and ...
K vizinhos mais próximos circular: uma nova proposta para predição de dados angulares
(Universidade Federal de Santa Maria, 2022-03-11)
Circular data are present in several areas of science and lack specific statistical methods for
their treatment. The calculation of descriptive statistics for data of a linear nature, for example,
does not result in ...
Aglomerantes a base de cimento, cinza de lodo de ETA e calcário: influência na hidratação, resistência à compressão e estrutura de poros
(Universidade Federal de Santa Maria, 2018-11-30)
Increases in population and consequent increases in the volume of treated water
have increased the amount of sludge produced in water treatment plants (WTPs),
which can introduce risks to the environment when its final ...
Objetivos do desenvolvimento sustentável e agenda 2030: um estudo das ações desenvolvidas pela Universidade Federal de Santa Maria - RS
(Universidade Federal de Santa Maria, 2021-09-27)
The present work will delimit itself, in the analysis of the application of the Sustainable Education Objectives brought by Agenda 2030, in relation to the role to be developed by the Universities, where specifically, the ...