Buscar
Itens para a visualização no momento 2801-2810 of 3386
Instrumentação para pilhas de células a combustível do tipo PEM visando a eficiência energética
(Universidade Federal de Santa Maria, 2009-06-22)
This work aims at the development of an instrumentation prototype to monitor, control and drive a proton exchange membrane fuel cell (PEMFC) and its ancillary equipment. The
first stage of this work is related to PEMFC ...
Comportamento das variáveis hidrológicas do balanço hídrico do solo em lisímetros de drenagem
(Universidade Federal de Santa Maria, 2009-07-07)
The purpose of this study is the monitoring of the behaviour of variables involved in determining the hydrological water balance by means of lysimeters installed in a small basin in the central depression of Rio Grande do ...
Elaboração de manual de eficientização energética para aplicação em micro e pequenas empresas comerciais varejistas
(Universidade Federal de Santa Maria, 2009-09-04)
This dissertation brings a plan for improvements in the form of a technical manual on combating waste electrical energy in micro and small enterprises commercial retailers, energy of diagnosis-based microenterprises and ...
Simulação de processos catalíticos para a produção de biodiesel sem glicerol - uma análise técnica, econômica e energética
(Universidade Federal de Santa Maria, 2023-02-15)
Although the use of biodiesel presents many economic, social and environmental
advantages, the biodiesel production still has a high cost. Most production processes
use alcohol as acyl receptor, producing glycerol as a ...
Algoritmos heurísticos de otimização da proteção e manobra em redes de distribuição de energia
(Universidade Federal de Santa Maria, 2008-07-29)
The new regulations of the electricity sector have requested from the power utilities great performance
efficiency on their distribution systems, requiring more rigorous quality and continuity energy levels. In Brazil,
the ...
Síntese e caracterização de nanocristais de TiO2 via processo hidrotérmico e sua atividade na fotodegradação de um corante da indústria coureira
(Universidade Federal de Santa Maria, 2009-11-30)
This work reports the synthesis of TiO2 catalyst using the hydrothermal method at different synthesis conditions in order to study the influence of time and temperature on the physical properties of the material. The ...
Recomendações para especificação de vidros em edificações comerciais na região climática de Porto Alegre - RS
(Universidade Federal de Santa Maria, 2009-11-18)
In business buildings, great part of the required power is spent on the air conditioning of internal settings. The transparent façades on such buildings are
greatly significant on such matters, since a notable percentage ...
Subsídio para gestão das águas subterrâneas na bacia hidrográfica do rio Santa Maria/RS
(Universidade Federal de Santa Maria, 2009-10-05)
This study aims to provide subsidies for groundwater management at the basin of Rio Santa Maria-BHRSM. Located in the southwest of Rio Grande do Sul state, Brazil, on the edge of Paraná Basin and transitioning towards the ...
Contribuição ao estudo do acionamento avançado do motor síncrono de ímãs permanentes: abordagem baseada nos modos deslizantes de ordem superior
(Universidade Federal de Santa Maria, 2009-07-24)
This work presents a study of first and second order sliding mode controllers applied to permanent magnet synchronous motor.The aim is a theoretical study and an experimental implementation, using the DSP TMS320F2812 ...
Um modelo gerencial de qualidade para micro e pequena empresa de confecção com base no perfil liderança.
(Universidade Federal de Santa Maria, 2008-02-25)
The present research has as mark to propose a Managerial Model of the Quality which can aid the personal computer administrators and small companies (MPEs) of making, in order to assure the continuous improvement in the ...