Temperature Programming
Mostrando 13-24 de 40 artigos, teses e dissertações.
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13. DEVELOPMENT OF A WEB SYSTEM FOR NUMERICAL ESTIMATE OF METEOROLOGICAL DATA FROM RIO GRANDE DO SUL / DESENVOLVIMENTO DE UM SISTEMA WEB PARA ESTIMATIVA NUMÉRICA DE DADOS METEOROLÓGICOS DO RIO GRANDE DO SUL
Climate influences a large variety of human activities and the real-time access to climatic data aims for providing information that are fundamental in several human activities, mainly for agriculture. Nowadays there are few weather stations operating, which causes a lack of information at worldwide level, in different regions. Keeping in mind that the state
Publicado em: 2010
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14. Determinação da distribuição de temperatura transiente no tempo em elementos estruturais utilizando o metodo dos elementos de contorno / Determination of transient temperature distribution in structural elements using the boundary elements method
The Boundary Elements Method was employed in the study of the transient effect of the temperature in heat conduction problems for plain elements. The purpose was to present a formulation using linear continuous or discontinuous boundary elements with nodal parameters fixed at the ends of elements. The collocations points were positioned at the ends of contin
Publicado em: 2009
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15. DESENVOLVIMENTO DE UM PADRÃO DE REFERÊNCIA METROLÓGICA DE FREQÜÊNCIA LASER EM TORNO DE 532 NM / DEVELOPMENT OF A METROLOGICAL STANDARD LASER FREQUENCY REFERENCE AT 532 NM
This work is part of the project for development of the first metrology reference for frequency standard around 532 nm in Brazil for the practical realization of the definition of the meter. The study was conducted at the Laboratory Interferometry (Laint) Inmetro, through an agreement with the Posgraduation Program in Metrology for Quality Industrial, PUC-Ri
Publicado em: 2009
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16. Flexão normal composta em seções retangulares de concreto armado em situação de incêndio
This work presents a general structural design method for reinforced concrete elements subjected to fire according to the Brazilian Standard ABNT NBR 15200:2004. The developed method evaluates reinforced concrete rectangular cross-sections subjected to compound flexure for different fire resistance required times specified by the Brazilian Standard ABNT NBR
Publicado em: 2009
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17. Thermodynamic and heat transfer analysis for design of a absorption refrigeration system for applications at low temperatures using natural gas. / Análise termodinâmica e de transferência de calor para dimensionamento de um sistema de refrigeração por absorção para aplicações em baixas temperaturas usando gás natural
The absorption refrigeration cycle studied in this work it uses as working fluid a mixture of water and ammonia and it is fed by thermal energy provided by direct burning of the natural gas. The objective is to produce cold in low temperatures for applications in the conservation of foods in general, especially in areas less favored by the electric net, as t
Publicado em: 2009
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18. ASPECTOS FISIOLÃGICOS E BIOQUÃMICOS DA MATURAÃÃO DE SEMENTES DE PIMENTÃO. / Physiological and biochemical aspects of the maturation of sweet pepper seeds
The determination of the appropriate point or interval for the harvest of fruits for sweet pepper seed production is fundamental for success in production programming, as well as for obtaining quality seeds. From their physiological maturity period up to the moment they are used for sowing, the seeds are subject to loss of physiological quality due to the oc
Publicado em: 2009
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19. Desenvolvimento de instrumentação dedicada a cromatografia líquida capilar (cLC) / Development of dedicated instrumentation to capillary liquid chromatography (cLC)
Since the chromatography was introduced by Tswett, in the beginning of the 20th century, the technique has suffered a constant progress. However, the miniaturization of liquid chromatography, instead of its promising start, it is still too slow and this technique has not reached a wide divulgation so far. It is important to mention that the number of groups
Publicado em: 2008
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20. Estudo da influência das variações de temperatura e umidade no comportamento da demanda de energia elétrica e formação do custo marginal de operação no Brasil. / Study of the influence of variations in temperature and humidity in the behaviour of the demand for electricity and formation of the marginal cost of operation in Brazil.
This thesis aims at the elaboration of a study regarding the interference of changes in temperature and relative humidity in the behavior of the demand for electric power and formation of the Marginal Cost of Operation (CMO) in Brazil. From the search for understanding of the steps involved in Operation Planning and Programming of Operation Daily, to meet th
Publicado em: 2008
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21. Controle vetorial de velocidade de um motor de indução trifásico com estimação neural de fluxo
This work describes the study and the implementation of the speed control for a three-phase induction motor of 1,1 kW and 4 poles using the neural rotor flux estimation. The vector speed control operates together with the winding currents controller of the stator phasis. The neural flux estimation applied to the vector speed controls has the objective of com
Publicado em: 2008
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22. GRAPHIC SIMULATION OF CORN GROWTH / SIMULAÇÃO GRÁFICA DO CRESCIMENTO DE PLANTAS DE MILHO
The computer graphic simulation can be used to understand plant growth and development influenced by biotic or abiotic parameters. The main simulation purposes are: (i) to predict plant agronomic characteristics when its submitted to different climatic, environmental, and physical factors; (ii) to analyze the influence of these factors in plant growth and de
Publicado em: 2007
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23. Estudo experimental de um controle adaptativo para um sistema de refrigeração / Experimental study of a refrigeration system using an adaptative control
This research deals with a experimental study of vapor compression refrigeration system, with variable speed compressor using adaptative fuzzy control, comparing its results with On-Off and PI control. The experimental equipment used is composed of a semi-hermetic compressor, concentric tube evaporator and condenser, thermostatic expansion valve with manual
Publicado em: 2006
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24. Estudo experimental de um controle adaptativo para um sistema de refrigeraÃÃo / Experimental study of a refrigeration system using an adaptative control
This research deals with a experimental study of vapor compression refrigeration system, with variable speed compressor using adaptative fuzzy control, comparing itâs results with On-Off and PI control. The experimental equipment used is composed of a semi-hermetic compressor, concentric tube evaporator and condenser, thermostatic expansion valve with manua
Publicado em: 2006