Buscar
Itens para a visualização no momento 1661-1670 of 2091
Íons fluoreto em águas subterrâneas: monitoramento e remoção por eletrocoagulação-flotação e adsorção com resíduos de tabaco
(Universidade Federal de Santa Maria, 2020-01-27)
The excess of fluoride ions (F-) is a problem in the quality of water supply because they can trigger
human health problems such as dental and skeletal fluorosis. Removal of F- to concentrations predicted
by potability ...
Modelo conceitual de contaminação por emissão de efluente no solo bacia escola campus/UFSM
(Universidade Federal de Santa Maria, 2012-08-27)
A utilização da escala SERVQUAL e o método QFD na avaliação da prestação de serviços de uma instituição de ensino superior
(Universidade Federal de Santa Maria, 2017-05-19)
Higher education institutions (IES) aim to offer their clients / academicians quality services that meet their expectations. To this end, many organizations like IES work with quality tools so that these consumer demands ...
Sistema fotovoltaico autônomo utilizando configuração multi-string e inversor multinível
(Universidade Federal de Santa Maria, 2011-08-11)
The continuous economic development of many countries and the emerging environmental
issues (gas emissions and the greenhouse effect) observed in the last decades forced an intense
research in renewable energy sources. ...
O e-business como indicativo para o desenvolvimento ao empreendedorismo
(Universidade Federal de Santa Maria, 2011-05-26)
The aim of this study is to e-business as an opportunity for the development of entrepreneurship. We tried to also identify the entrepreneurial characteristics that lead to success of this model, and analyze and propose ...
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais
(Universidade Federal de Santa Maria, 2009-11-27)
Among the soft-switching techniques, the zero-voltage-transition (ZVT) technique has been accepted well by the industry due its attractive characteristics, such as simplicity, low losses in the auxiliary commutation circuit ...
Projeto e implementação de um conversor módulo integrado para conexão de geração fotovoltaica à rede elétrica
(Universidade Federal de Santa Maria, 2018-02-27)
This Master Thesis presents the analysis, design and implementation of a grid-connected
module integrated converter, or, simply, microinverter, for photovoltaic applications. The
system is composed of two stages: a ...
Preparação de ferro metálico suportado em polietileno para uso como catalisador flutuante na reação foto-fenton
(Universidade Federal de Santa Maria, 2019-03-25)
In the present paper, zero-valent iron particles were supported on low density polyethylene. The material produced was used as a buoyant catalyst in the removal of the Ponceau 4R azo dye from an aqueous solution via ...
Otimização de torres treliçadas de linhas de transmissão através do método teaching learning based optimization algorithm
(Universidade Federal de Santa Maria, 2022-02-09)
In the engineering field, the search for the best performance of a structure in terms of
economy, efficiency and safety is one of the main objectives. In this sense, in relation
to transmission line towers (TLT), it ...
Metadados para preservação e segurança do diário de classe eletrônico da UFSM
(Universidade Federal de Santa Maria, 2011-09-30)
The public education institutions are trying to follow the technological advances and aim to
search for the evolution in education that increasingly appears every day in its organizational
environment. This research aimed ...