Capability Curve
Mostrando 13-24 de 28 artigos, teses e dissertações.
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13. Potencial de aproveitamento de resíduos de caulim paraibano para o desenvolvimento de argamassas de múltuplo uso. / Potential use of waste kaolin Paraiba for the development of multiple-use mortars.
In Paraíba, the industry of the kaolin, an activity of great importance to the State and local producers, generating large amounts of waste that is landfilled, impacting the environment. The National Council on the Environment (CONAMA) has been made responsible for waste management to their generators. This residue does not have recycling technology known d
Publicado em: 2007
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14. Risco de inadimplência em uma instituição de ensino fundamental e médio do Paraná : aplicação da resolução 2.682/99 do Banco Central do Brasil / Risco de inadimplência em uma instituição de ensino fundamental e médio do Paraná : aplicação da resolução 2.682/99 do Banco Central do Brasil
The private Brazilian Schools and High Schools need to deal with some great challenges: the decrease of birth rates (meaning decrease on the quantity of students available), new competitors and the increase in the default rate. In parallel, the Brazilians macroeconomic situation is instable and the Consumers Protection Act is making it difficult the collecti
Publicado em: 2007
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15. FLUXO DE POTÊNCIA ÓTIMO COM RESTRIÇÕES DA CURVA DE CAPABILIDADE DO GERADOR SÍNCRONO / EXCELLENT FLOW OF POWER WITH RESTRICTIONS OF THE CURVE OF CAPABILIDADE OF THE SYNCHRONOUS GENERATOR
This work presents the equations of operation limits of the synchronous machine that constitute the so called capability curve. From these mathematical equations, deduced from each one of these limits, the graphic of the operation curve is computationally generated, defining the operation region of the synchronous machine so that their windings do not itself
Publicado em: 2006
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16. Alteração de atributos fisicos de um solo, sob pastagem degradada, submetido a escarificação / Physical attributes changes on a soil, under degraded pasture, submitted to scarification
The intensive use of the soil combined with inadequate management practices leads to soil degradation. This problem is common with pasturelands, where the farm manager specializes in animal husbandry, and not in soil management. Soil compaction in such areas can be considered as one of the main limitations to forage production capability. Several techniques
Publicado em: 2006
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17. Investigação experimental do comportamento dúctil de aços API-X70 e aplicação de curvas de resistência J-∆a para previsão de colapso em dutos. / Experimental analysis of ductile behaviour of API-X70 steels and use of resistance J-∆a curves for predicting pressure collapse of pipelines.
This study presents the experimental investigation of the ductile behaviour of microalloyed pipeline steel. Additionally, it extends the computational cell methodology to model Mode I crack extension in a high strength low alloy HSLA steel. Laboratory testing of an API 5L X70 steel at room temperature using standard, deep crack C(T) specimens provides the cr
Publicado em: 2004
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18. Using HSB sensor to retrieval precipitable water and rainfall / Um estudo sobre o uso do sensor HSB na estimativa da água precipitável e da precipitação
This work exploits the capability of the Humidity Sensor Brazil (HSB) channel in retrieving Integrated Water Vapor Content and estimating precipitation. The data analyses of this study have been carried out in two stages: firstly using simulations of the HSB channel brightness temperatures from RTTOV and Kummerow radiative models, and secondly, using data fr
Publicado em: 2004
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19. ACTUAL REACTIVE POWER CAPABILITY EVALUATION IN AN ELECTRICAL POWER PLANT / AVALIAÇÃO DA CAPACIDADE REAL DE GERAÇÃO DE POTÊNCIA REATIVA EM UMA USINA DE GERAÇÃO DE ENERGIA ELÉTRICA
They show that different generator loads produce greater heating in different parts of generator. A method is described and a software is presented to evaluate the actual reactive power capability curve considering the operating condition.This paper shows that it is possible to enlarge the reactive power capability only by knowing the actual capability limit
Publicado em: 2002
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20. MAPEAMENTO DO VALOR ECONÔMICO DOS EQUIPAMENTOS DE COMPENSAÇÃO DE POTÊNCIA REATIVA / ECONOMIC VALUE OF REACTIVE POWER DEVICES
No novo modelo para o setor elétrico brasileiro a operação do sistema é de responsabilidade do Operador Independente do Sistema enquanto que a propriedade do equipamento e os gastos com a sua manutenção são de responsabilidade do agente prestador do serviço ancilar.Desta forma, o lucro do agente prestador do serviço ancilar de potência reativa ser�
Publicado em: 2002
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21. A GEOMETRIC MODELER FOR GENERATION OF TWO - AND THREE - DIMENSIONAL FINITE ELEMENT MESHES / INTEGRACIÓN DE ALGORITMOS DE GENERACIÓN DE MALLAS DE ELEMENTOS FINITOS / INTEGRAÇÃO DE ALGORITMOS DE GERAÇÃO DE MALHAS DE ELEMENTOS FINITOS
This work presents algorithms for two-dimensional and three- dimensional mesh generation of finite elements that, together with another algorithms developed by its research group, are integrated in a computational package. The mesh generation algorithms become independent of the preprocessor, and may be incorporated in different programs. An algorithm for tw
Publicado em: 1999
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22. Sigmoidal curve-fitting redefines quantitative real-time PCR with the prospective of developing automated high-throughput applications
Quantitative real-time PCR has revolutionized many aspects of genetic research, biomedical diagnostics and pathogen detection. Nevertheless, the full potential of this technology has yet to be realized, primarily due to the limitations of the threshold-based methodologies that are currently used for quantitative analysis. Prone to errors caused by variations
Oxford University Press.
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23. Nω-arginine dimethylation modulates the interaction between a Gly/Arg-rich peptide from human nucleolin and nucleic acids
We studied the interaction between a synthetic peptide (sequence Ac-GXGGFGGXGGFXGGXGG-NH2, where X = arginine, Nω,Nω-dimethylarginine, DMA, or lysine) corresponding to residues 676–692 of human nucleolin and several DNA and RNA substrates using double filter binding, melting curve analysis and circular dichroism spectroscopy. We found that despite t
Oxford University Press.
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24. Determination of the Biomasses of Small Bacteria at Low Concentrations in a Mixture of Species with Forward Light Scatter Measurements by Flow Cytometry
The forward light scatter intensity of bacteria analyzed by flow cytometry varied with their dry mass, in accordance with theory. A standard curve was formulated with Rayleigh-Gans theory to accommodate cell shape and alignment. It was calibrated with an extinction-culture isolate of the small marine organism Cycloclasticus oligotrophus, for which dry weight
American Society for Microbiology.