Active Filters
Mostrando 1-12 de 57 artigos, teses e dissertações.
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1. Development and characterization of photoprotective formulations containing keratin particles
This work deals with development and evaluation of MFQ protective formulation, which contains two organic filters, namely: octyl-p-methoxycinnamate (OMC) and benzophenone-3 (BP-3); a photostabilizing agent called ethylhexylmethoxycrylene (EHMCR) and keratin particles. The MFQ formulation was evaluated in order to measure its pH, spin-spin lattice relaxation
Braz. J. Pharm. Sci.. Publicado em: 20/12/2019
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2. Moringa water extract promising additive to prolong the activity of baculovirus under field-sunlight conditions in Egypt
Resumo Os baculovírus são considerados como biopesticidas eficazes, exceto por não estarem ativos sob condições de luz solar. O objetivo deste estudo é avaliar a capacidade do extrato de moringa para prolongar a atividade do vírus sob condições de campo egípcias, tendo em vista que Moringa provou ser um material protetor forte sob investigação an
Braz. J. Biol.. Publicado em: 02/12/2019
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3. A novel method for EMG decomposition based on matched filters
Introduction Decomposition of electromyography (EMG) signals into the constituent motor unit action potentials (MUAPs) can allow for deeper insights into the underlying processes associated with the neuromuscular system. The vast majority of the methods for EMG decomposition found in the literature depend on complex algorithms and specific instrumentation.
Res. Biomed. Eng.. Publicado em: 2015-03
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4. Planejamento de inibidores baseado em fragmentos moleculares para a enzima gliceraldeído-3-fosfato desidrogenase de Trypanosoma cruzi / Design of inhibitors through fragment-based drug discovery for the enzyme glyceraldehyde-3-phosphate dehydrogenase from Trypanosoma cruzi
Chagas disease is a parasitic illness endemic in Latin America caused by the trypanosomatid parasite Trypanosoma cruzi that spreads around the world due to people migration. Nowadays, Benznidazole and Nifurtimox (banned in Brazil), are used for the treatment of this disease but causes severe side effects to patients. Recently, three new molecules have reache
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2012
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5. Condicionador unificado de qualidade de energia dual com controle simplificado / Dual unified power quality conditioner using a simplify control technique
Esta Dissertação de Mestrado apresenta um condicionador unificado de qualidade de energia dual (iUPQC) trifásico a quatro fios, controlado analogicamente, composto por dois filtros ativos, o série e o paralelo. O filtro ativo paralelo é controlado em tensão, responsável por manter a tensão da carga senoidal, regulada, equilibra e livre de harmônicos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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6. Controle ativo de vibrações em estruturas flexíveis com incertezas paramétricas / Active vibration control of flexible structures with parametric uncertainties
The aim of this dissertation is to study the H-infinity robust control techniques for linear dynamic systems with parametric uncertainties. The finite element method was employed to find the model of the flexible structure. When dealing with the model, parametric uncertainties were considered for natural frequencies and for damping of the structure. The para
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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7. Geração distribuída usando geradores síncronos trifásicos / Distributed generation using three-phase synchronous generators
Os geradores síncronos trifásicos são atualmente os mais utilizados em geração de energia elétrica em grande escala no mundo todo. Na geração de energia elétrica em pequena escala, geralmente como geração distribuída, ligada à rede de distribuição em média tensão ou até mesmo em baixa tensão, eles tem sido muito usados devido à sua princi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/08/2011
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8. Desenvolvimento de um modelo de cela para processamento de radiofármacos injetáveis / Development of a pattern hot cell for production of injectable radiopharmaceuticals
A controlled ambient should be established to the production/processing of materials susceptible to contamination, like injectable pharmaceuticals, in order to agree with normative and regulatory requirements. Considering medical but also toxic, radioactive and dangerous products, the ambient should work in special conditions to assure that the materials, wh
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2010
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9. Evaluation of blood compatibility of plasma deposited heparin-like films and SF6 plasma treated surfaces
In devices used in open-heart surgery and dialysis, blood must be continuously processed using extracorporeal circuits composed of peristaltic pumps and active components such as specific filters and oxygenators. Several procedures have been employed to avoid blood coagulation induced by contact with the artificial surfaces of such devices. Often heparin, a
Materials Research. Publicado em: 2010-03
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10. ROBUST VARIABLE STRUCTURE MODEL REFERENCE ADAPTIVE CONTROL APPLIED TO ACTIVE POWER FILTERS / CONTROLE ADAPTATIVO ROBUSTO DE ESTRUTURA VARIÁVEL POR MODELO DE REFERÊNCIA APLICADO A FILTROS ATIVOS DE POTÊNCIA
This works presents a Robust Variable Structure Model Reference Adaptive Control scheme denoted VSRMRAC. In this adaptive control strategy, each parameter of the control law is obtained by the sum of two other adaptive terms. One of them is associated with the RMRAC algorithm, while the other is composed of an adaptive gain rated by an approximated sign func
Publicado em: 2010
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11. Intravascular ultrasound: tridimensional quantification and analysis / Análise e quantificação tridimensional em imagens de ultra-som intravascular
INTRODUCTION: Several efforts for in vivo atherosclerotic plaque estimation has been realized worldwide. Current methods for related application are based on spectral analysis of backscattered ultrasound signals before intravascular image formation (IVUS), once there is not available techniques to perform composition analysis only from IVUS images. On this s
Publicado em: 2009
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12. Carreador lipÃdico nanoestruturado à base de cera de carnaÃba: desenvolvimento, caracterizaÃÃo e uso na encapsulaÃÃo de benzofenona-3
Solid lipid nanoparticles made of pure lipids (SLN) or a mixture of solid and liquid lipids (NLC) have been proposed as a category of carriers for cosmetic ingredients of current and growing interest due to a number of advantages compared to conventional formulations. Natural waxes are considered lipid matrices of great potential for the production of topica
Publicado em: 2009