Induction Machinery
Mostrando 1-12 de 157 artigos, teses e dissertações.
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1. Photosynthetic induction and activity of enzymes related to carbon metabolism: insights into the varying net photosynthesis rates of coffee sun and shade leaves
The shade leaves of coffee (Coffea arabica L.) apparently retain a robust photosynthetic machinery that is comparable to that of sun leaves and can fix CO2 at high rates when subjected to high light intensities. This raises the question of why the coffee plant would construct such a robust photosynthetic machinery despite the low photosynthetic rates achieve
Theor. Exp. Plant Physiol.. Publicado em: 2013
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2. Detecção de falhas em motores elétricos através das máquinas de vetores de suporte / Fault detection in induction motors using support vector machines
Motores elétricos são componentes essenciais na grande maioria dos processos industriais. As diversas falhas nas máquinas de indução podem gerar consequências drásticas para um processo industrial. Os principais problemas estão relacionados ao aumento dos custos, piora nas condições do processo e de segurança e qualidade do produto final. Muitas d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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3. Ensaio de máquinas de indução
Estudo de metodologia para obtenção de modelo elétrico de máquinas de indução baseada em procedimentos de ensaio normalizados, empregando medidor trifásico multifunção, sistema de medição de resistência a quatro fios e software desenvolvido para aquisição e tratamento dos dados de ensaio.
Publicado em: 2010
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4. Effect of induction heating on steel seamless tubes used in diesel enginers / Efeito do aquecimento por indução eletromagnetica de tubos sem costura utilizados em motores a diesel
This paper presents a study about the effect of cold upsetting and electromagnetic induction heating on microstructure and hardness characteristics of steel seamles pipe. This pipe studied is applied in fuel flow transport of high pressure fuel system. As fuel is transported the pipe sealing characteristic is critical on assembly interfaces of this pipe. Thi
Publicado em: 2009
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5. Modeling of welding machines for electromagnetic induction in RF / Modelagem de maquinas de solda por indução eletromagnetica em RF
Este trabalho trata do estudo de máquinas industriais de solda por indução eletromagnética na faixa de Rádio Freqüência (RF), visando modelos robustos baseados em circuitos de parâmetros concentrados. Tipicamente as máquinas industriais para a aplicação em questão, apresentam três estágios; a fonte (geração de energia eletromagnética), blind
Publicado em: 2009
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6. Response of sweet orange transgenic plants to infection of Xanthomonas axonopodis pv. citri and Candidatus Liberibacter asiaticus / Resposta de plantas transgenicas de laranja doce (Citrus sinensis L. Osb.) a infecção por Xanthomonas axonopodis pv. citri e Candidatus Liberibacter asiaticus
Huanglongbing (HLB), also known as greening, is the world most important citrus disease and it is caused by the bacterium Candidatus Liberibacter spp. This disease was originated from China and Africa, where were discovered the variants Ca. L. asiaticus and Ca. L. africanus, respectively. In 2004, the disease was detected in Brazil, where the variants asiati
Publicado em: 2008
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7. Computer based model for the heating of a single phase induction motor applied on washing machine during agitation task / Modelagem computacional do aquecimento de um motor de indução monofasico aplicado em maquinas de lavar roupas durante a etapa de agitação
This study motivation was finding a computer-based model that was able to foresee if the duty cycle applied in a single-phase induction motor implies or not in an overheating that can compromise the motor insulation. The solution presented here is based on finding a difference equation in which the system output (motor temperature at time k+1) is calculated
Publicado em: 2007
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8. Algoritmo preditivo baseado em modelo aplicado ao controle de velocidade do motor de indução / Speed control of induction motor using predictive algorithm
This thesis presents the results concerning the control of rotor flux and speed of the induction motor using MBPC strategy, which is based on the error minimization between the future set point and model prediction, resulting in control signals. In the case studied in this thesis the motor model is described in space-state. The non linear MBPC emploies searc
Publicado em: 2007
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9. Algoritmo preditivo baseado em modelo aplicado ao controle de velocidade do motor de indução / Speed control of induction motor using predictive algorithm
Esta tese trata do emprego do controle preditivo baseado no modelo (MBPC-Model Based Predictive Control) no acionamento do motor de indução do trifásico, para controle de fluxo de rotor e velocidade. A estratégia MBPC baseia-se na minimização do erro entre as referências futuras e a predição do modelo, para gerar os sinais de controle. Nesta tese, o
Publicado em: 2007
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10. Temperature affects the T-DNA transfer machinery of Agrobacterium tumefaciens.
Early studies on Agrobacterium tumefaciens showed that development of tumors on plants following infection by A. tumefaciens was optimal at temperatures around 22 degrees C and did not occur at temperatures above 29 degrees C. To assess whether this inability to induce tumors is due to a defect in the T-DNA transfer machinery, mobilization of an incompatibil
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11. Saccharomyces cerevisiae Transcription Elongation Mutants Are Defective in PUR5 Induction in Response to Nucleotide Depletion
IMP dehydrogenase (IMPDH) is the rate-limiting enzyme in the de novo synthesis of guanine nucleotides. It is a target of therapeutically useful drugs and is implicated in the regulation of cell growth rate. In the yeast Saccharomyces cerevisiae, mutations in components of the RNA polymerase II (Pol II) transcription elongation machinery confer increased sens
American Society for Microbiology.
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12. Analysis of a Coxiella burnetti gene product that activates capsule synthesis in Escherichia coli: requirement for the heat shock chaperone DnaK and the two-component regulator RcsC.
A 1.2-kb EcoRI genomic DNA fragment of Coxiella burnetti, when cloned onto a multicopy plasmid, was found to induce capsule synthesis (mucoidy) in Escherichia coli. Nucleotide sequence analysis revealed the presence of an open reading frame that could encode a protein of 270 amino acids. Insertion of a tet cassette into a unique NruI restriction site resulte