Buscar
Itens para a visualização no momento 71-80 of 101
Sistema de geração distribuida de energia fotovoltaica integrado a um sistema de iluminação pública à base de LEDs
(Universidade Federal de Santa Maria, 2014-02-24)
This work presents the development of an electronic topology to supply an LED-based
street lighting system, which is integrated to a grid-connected photovoltaic distributed
generation system. The lighting systems need ...
Análise ecotoxicológica da acrilamida utilizando uma microalga como organismo indicador
(Universidade Federal de Santa Maria, 2014-10-29)
Acrylamide is a water soluble monomer with a multitude of industrial and chemical applications. In polymeric form, which is also known as polyacrylamide, it may be used as a flocculant for water treatment. However, this ...
Metodologia de projeto do conversor DAB aplicado a transformadores de estado sólido
(Universidade Federal de Santa Maria, 2014-08-01)
This thesis presents a design methodology for the dual active bridge converter, that includes the influence of the nominal phase-shift angle in the behavior of the DAB converter for entire power and voltage ranges. The ...
Análise dos indicadores do sistema de avaliação da pós-graduação stricto sensu no Brasil: um estudo multicasos nos programas de Engenharia de Produção
(Universidade Federal de Santa Maria, 2014-02-27)
In a world, where the market becomes increasingly dynamic and competitive, it is essential to invest in education to ensure that development and progress. Programs of graduate studies aim to contribute efficiently to the ...
Carbonatação acelerada em concretos compostos com cinza de casca de arroz de diferentes teores de carbono grafítico
(Universidade Federal de Santa Maria, 2014-02-28)
Carbonation is a natural phenomenon observed in carbon structures, and it is a result of the combined presence of CO2 in the environment and moisture. Carbonation may lower the pH of the concrete to such an extent that the ...
Controle adaptativo robusto combinado com regulador linear quadr atico aplicado a condicionadores de energia
(Universidade Federal de Santa Maria, 2014-09-05)
This work proposes an algorithm that combines two control laws with di erent
compensation characteristics in order to obtain a robust and high performance control:
A Linear Quadratic Regulator aided by a Kalman lter or ...
Projeto e análise de moduladores Sigma-delta em tempo contínuo em tecnologias CMOS
(2014-12-05)
This work presents the design of a continuous time sigma-delta modulator with a 0.2
MHz signal bandwidth and 78 dB signal-to-noise ratio (SNR), which are the specifications for
the GSM standard. Three single-loop, ...
Produção de bioherbicida por processos fermentativos a partir do fungo Phoma sp.
(Universidade Federal de Santa Maria, 2014-03-07)
Weeds are one of the major problems in the agricultural products cultivation and the main strategy of control is the use of chemical herbicides. Although is efficient, the herbicides bring direct and indirect consequences ...
Acoplamento e validação funcional do sistema reconfigurável DIM
(Universidade Federal de Santa Maria, 2014-12-11)
Reconfigurable architectures have been widely employed to speedup applications by
exploiting instruction level parallelism, appearing as an alternative to replace the power-hungry circuits of superscalar processors. The ...
Explorando a união entre memória de contextos e de instruções de uma arquitetura reconfigurável visando a redução de área e consumo de potência em sistemas embarcados
(Universidade Federal de Santa Maria, 2014-01-17)
In this work, a new structure of memory for reconfigurable architectures, emerging solutions
for embedded systems, has been developed. The new memory, called Unified Memory,
try to merge reconfiguration contexts and ...