Electrical Systems
Mostrando 13-24 de 484 artigos, teses e dissertações.
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13. Eficiência energética: sistemas de iluminação com LEDs, distribuídos em corrente contínua e utilizando energia fotovoltaica
Resumo O cenário atual é marcado por uma crescente necessidade de energia, esgotamento de recursos naturais e pela necessidade de se aumentar os cuidados com o consumo de energia do setor elétrico. Com o crescimento da demanda por energia, torna-se essencial a obtenção de maior eficiência energética. Para tal é fundamental não somente buscar soluç�
Ambient. constr.. Publicado em: 03/10/2019
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14. Avaliação morfológica de fibras eletrofiadas de policaprolactona em função do tipo de solvente
RESUMO Recentemente, estratégias da engenharia tecidual para o tratamento de feridas e queimaduras prevê o uso de biomateriais nanoestruturados capazes de facilitar a regeneração da pele e a cura das feridas. Um dos processos utilizados para a obtenção deste tipo de biomaterial é a eletrofiação. Por meio deste processo é possível formar filmes com
Matéria (Rio J.). Publicado em: 16/09/2019
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15. DECREASE IN OFF-PEAK ELECTRICAL ENERGY DEMAND BY AGROINDUSTRIES DUE TO PHOTOVOLTAIC SOLAR GENERATION
ABSTRACT The largest energy losses and voltage variations from electricity suppliers occur at times of peak demand. Daytime peaks are mainly influenced by large industrial and commercial consumers. The installation of photovoltaic systems without energy storage to supply part of the demand can contribute to stabilize the voltage and reduce losses. These and
Eng. Agríc.. Publicado em: 12/08/2019
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16. Modular modeling approach for FDM printed structures and piezo disks for metamaterial design
Abstract Research in metamaterials has recently gained interest in the field of noise and vibration control. The ability of creating band gap zones with minimum added mass is the main feature behind its success. In addition, the use of 3D printed parts, particularly the Fused Deposition Modeling (FDM), offers a practical solution for manufacturing parts with
Lat. Am. j. solids struct.. Publicado em: 12/08/2019
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17. THERMOPHYSICAL PROPERTIES OF 1-ETHYL-3-METHYLIMIDAZOLIUM CHLORIDE SOLUTION FROM 293.15 TO 323.15 K
ABSTRACT Aqueous systems composed of ionic liquid make up a new alternative for use in processes involving the separation of biomolecules. The objective of this experiment was to obtain the thermo-physical properties of density, refractive index, electrical conductivity, molar volume, thermal expansion coefficient and apparent specific volume of the ionic li
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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18. Study on mechanical & thermal properties of PCL blended graphene biocomposites
Abstract Graphene is a new carbon based nonmaterial that attracts the technology and constitutes one of the great promises for nanotechnology applications in a near feature. It’s having versatile intrinsic mechanical, thermal and electrical properties.By Incorporation of small amount of graphene fillers into polymer matrix can create attractive bio composi
Polímeros. Publicado em: 04/07/2019
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19. Physiological response of marandu grass seeds exposed to NPK fertilizer
RESUMO: Para facilitar o processo de semeadura de espécies forrageiras é comum a mistura de sementes com fertilizantes, seja em cultivo exclusivo, consorciado ou na implantação de sistemas integrados de produção agropecuária. Entretanto, a salinidade e acidez do fertilizante, em longos períodos de mistura, supõe-se ação deletéria na qualidade fi
Cienc. Rural. Publicado em: 30/05/2019
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20. Physiological and biochemical changes during desiccation tolerance loss in millet (Pennisetum glaucum L.) seeds
ABSTRACT. The aim of this study was to evaluate the physiological and biochemical changes related to desiccation tolerance loss in millet seeds. The studied points of the germination process were determined according to the seed imbibition curve of the millet hybrid ADRF6010: control (0h), 3h of imbibition, 1 and 3 mm radicle. The seeds were dried on silica
Acta Sci., Agron.. Publicado em: 28/03/2019
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21. Extremum Seeking-based Adaptive PID Control applied to Neuromuscular Electrical Stimulation
Abstract A multivariable deterministic extremum seeking (ES) is being evaluated to construct an adaptive Proportional-Integral-Derivative (PID) control law for the functional Neuromuscular Electrical Stimulation (NMES) of stroke patients. The developed scheme is applied to control the position of the patient’s arm so that movements of flexion/extension for
An. Acad. Bras. Ciênc.. Publicado em: 14/02/2019
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22. Study of the Performance Reduction Due to the Dirt Effect in the Photovoltaic Systems of UTFPR - Curitiba
ABSTRACT Photovoltaic systems have been consolidated in the global energy scenario as an option of low environmental impact energy generation, high reliability and great applicability in urban centers, acting like energy generators near the point of consumption. The Federal University of Technology of Paraná (UTFPR), with the proposal of testing the perform
Braz. arch. biol. technol.. Publicado em: 29/10/2018
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23. Protection of Grid Connected Photovoltaic Systems (GCPVS)
ABSTRACT Installations of photovoltaic systems connected or not to the electrical network have become increasingly popular, but it is often carried out by unqualified people using low quality components. The present study aims to describe the methodology adopted for the protection of grid connected photovoltaic systems (GCPVS) and the implications caused by
Braz. arch. biol. technol.. Publicado em: 29/10/2018
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24. Projection of the Demand of Electricity in the State of Paraná for 2050 and Proposal of Complementarity of the Electrical Matrix through the Solar Photovoltaic Source
ABSTRACT Energy is essential for human activities and, considering the prospect that the demand for energy increases, it is necessary to carry out studies of new technical solutions so as to make the use of the available sources feasible. Greater participation of renewable energy sources in the electricity matrix has been stimulated worldwide and a number of
Braz. arch. biol. technol.. Publicado em: 29/10/2018