Alternating Systems
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. Visual and automatic classification of the cyclic alternating pattern in electroencephalography during sleep
Cyclic alternating pattern (CAP) is a neurophysiological pattern that can be visually scored by international criteria. The aim of this study was to verify the feasibility of visual CAP scoring using only one channel of sleep electroencephalogram (EEG) to evaluate the inter-scorer agreement in a variety of recordings, and to compare agreement between visual
Braz J Med Biol Res. Publicado em: 25/02/2019
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2. Resistance of three implant-abutment interfaces to fatigue testing
The design and retentive properties of implant-abutment connectors affect the mechanical resistance of implants. A number of studies have been carried out to compare the efficacy of connecting mechanisms between abutment and fixture. Objectives: The aims of this study were: 1) to compare 3 implant-abutment interfaces (external hexagon, internal hexagon and c
J. Appl. Oral Sci.. Publicado em: 01/07/2011
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3. Algoritmo híbrido para projeto de controladores de amortecimento de sistemas elétricos de potência utilizando algoritmos genéticos e gradiente descendente / Hybrid algorithm for damping controller design in electric power systems via genetic algorithms and gradient descent
Os sistemas elétricos de potência são frequentemente submetidos a perturbações causadas, por exemplo, por um aumento súbito de carga ou por um curto-circuito em uma linha de transmissão. Estas perturbações podem gerar oscilações eletromecânicas no sistema, uma vez que a velocidade dos geradores oscila. Para reduzir tais oscilações, controladore
Publicado em: 2011
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4. Substituição do sincronismo mecânico por sincronismo eletrônico das correias e esteiras de envernizadeiras e impressoras litográficas de folhas metálicas
In the print industry for several segments and a segment of this is on printed sheet metal. This segment is the preparation of steel plates for the manufacture of cans of industry both for domestic use, as industrial. The treatment of steel is based on the application of varnishes and paints that protect the metal against rust and assists in the decoration a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2009
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5. The copepod assemblage (Copepoda: Crustacea) on the inner continental shelf adjacent to Camamu Bay, northeast Brazil
The copepod assemblage on the inner continental shelf adjacent to the coastal system of Camamu Bay (state of Bahia, Brazil) is described in relation to hydrographic conditions, during the wet and dry seasons of 2004. The zooplankton samples were obtained in vertical tows using a net with 200 µm mesh size. Temperature and salinity were measured, and the tota
Zoologia (Curitiba). Publicado em: 2009-12
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6. Effects of alternating magnetic field on the metabolism of the healthy and diabetic organisms
The aim of this study was to determine the effects of alternating magnetic field on the metabolism of the healthy and diabetic rats. The rats were divided into two experimental groups. Magnetic fields of 5 and 8mT intensity was applied to the first group of rats for 3 weeks (C5mT, CMF5mT, C8mT and CMF8mT). The second group was identified as diabetics group a
Brazilian Archives of Biology and Technology. Publicado em: 2008-06
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7. Metodos baseados na fotoacustica para caracterização de materiais magnetocaloricos / Methods based on the photoacoustic for characterization of magnetocaloric materials
In this work the photoacoustic technique was used to develop experimental setups to investigate magnetocaloric materials, which have been of great interest due to their applications in refrigeration systems. The value (4,5 ± 0,2).10-6 m2/s was determined, at room temperature, as the thermal di usivity of the Gd, based on the two-beam photoacoustic method, b
Publicado em: 2008
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8. Biological control of coffee rust / Controle biológico da ferrugem do cafeeiro
This thesis is part of a research program aiming to biocontrol coffee rust (Hemileia vastatrix, Hv) in organically-grown coffee. Efficiency of bacterial isolates was compared in two plantations, during 3 years. Isolates B157 (Bacillus sp.) and P286 (Pseudomonas sp.) reduced disease intensity relative to the control; B157 was as efficient as copper hydroxide.
Publicado em: 2008
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9. ERGODICITY AND ROBUST TRANSITIVITY ON THE REAL LINE / TRANSITIVIDADE ROBUSTA E ERGODICIDADE DE APLICAÇÕES NA RETA
In the middle of the 19th century, G. Boole proved that the transformation x ->x ¿ 1/x, defined on R ¿ {0}, is a Lebesgue measure preserving transformation (Ble). Over one hundred years later, R. Adler and B.Weiss proved that this map, called Boole`s map, is, in fact, ergodic with respect to the Lebesgue measure (Adl). In this work, we present the notion o
Publicado em: 2007
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10. AVALIAÇÃO, IN VITRO, DE PREPAROS QUÍMICO-MECÂNICO DE CANAIS RADICULARES QUANTO AO DESVIO, LIMPEZA, MODELAGEM DO TERÇO APICAL E DEFORMAÇÕES MECÂNICAS DE INSTRUMENTOS DE NÍQUEL-TITÂNIO E AÇO INOXIDÁVEL
This study had as main objective to evaluate the apical third of root canals within cleaning, apical displacement, shaping after root canals preparations with both rotatory and alternating mechanized systems associated or not. It still had as objective, the detection of deformations and separations of endodontic flares used in the study. A total of 45 upper
Publicado em: 2007
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11. The inductive coupling with On-Chip coils / O acoplamento indutivo com bobinas On-Chip
The quantum Hall effect (QHE) remains the target of an immense research effort twenty six years after its discovery. In fact this phenomenon has been a source of fundamental questions. Among the open problems in the field is the spatial distribution of the electric current in the quantum Hall effect. This question has been in debate since its discovery. Some
Publicado em: 2007
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12. Análise do uso de água em unidades de produção de mudas de eucalipto / Analysis of water use in units of eucalyptus seedling production
This study was carried out in the seedling production units belonging to CAF (Santa Barbara Ltda - Agro-forestry Company), in the Municipal districts of Dionísio and Martinho Campos, Minas Gerais, from July 2004 to December 2006. The objectives of the study were to determine the water needs of eucalyptus seedlings, evaluate the irrigation systems and presen
Publicado em: 2007