Fill Factor
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. A 2.4 GHz Coplanar Solar Cell Patch Antenna with a Semi-Analytical Evaluation of Temperature Effects
Abstract Solar cells integrated with antennas have aroused scientific interest as an attractive energy source alternative in low power devices for IoT and Wireless Sensor Network applications. Since the space for all components in the systems is scarce, different integration ideas have been proposed in this field. However, further analysis of the performance
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. Análise da efetividade do estágio prático internacional de enfermagem em relação ao estágio prático nacional de enfermagem
Resumo Objetivo: Este estudo foi conduzido para avaliar a efetividade do estágio prático internacional de enfermagem quanto à autoeficácia, competência cultural e competência global. Foi utilizada a análise fatorial para avaliar a confiabilidade das medidas do estudo. Métodos: Um método de amostragem intencional foi usado para coletar os dados: os
Acta paul. enferm.. Publicado em: 10/06/2019
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3. Avaliação do manchamento e da rugosidade superficial de materiais restauradores diretos após diferentes sistemas de polimento: estudo in vitro
Resumo Introdução Com o avanço estético e tecnológico dos compósitos restauradores diretos, a procura pela Odontologia Éstética tem aumentado. Objetivo Avaliar o manchamento e a rugosidade superficial dos compósitos Filtek Z350 (3M ESPE) e Filtek Bulk Fill (3M ESPE), polidos por diferentes sistemas: Disco SofLex e Disco SofLex diamantado espiral
Rev. odontol. UNESP. Publicado em: 11/03/2019
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4. Fatores espaciais da ocorrência criminal: modelo estruturador para a análise de evidências empíricas
Resumo A grande quantidade de estudos sobre a relação entre os fatores espaciais e a ocorrência de crimes resultou em um quadro de fragmentação que dificulta uma visão integrada de quais são esses fatores e de quão robusta são as evidências sobre a influência de cada um deles, bem como de quais são as múltiplas interações de um mesmo fator em
urbe, Rev. Bras. Gest. Urbana. Publicado em: 14/02/2019
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5. New insight on the relationship between lethal electrical fields versus cardiomyocyte orientation
Abstract Introduction Cardiovascular diseases represent a major cause of death world-wide and one of their greatest complications is the development of cardiac arrhythmias, in which ventricular fibrillation (VF) stands out as the most severe one. The only therapy that reverses VF is defibrillation. However defibrillatory shock is capable of killing heart c
Res. Biomed. Eng.. Publicado em: 13/09/2018
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6. Is there correlation between polymerization shrinkage, gap formation, and void in bulk fill composites? A μCT study
Abstract: This in vitro study aimed to evaluate the volume of polymerization shrinkage (VS), gap (VG), and void (VV) using computerized microtomography (μCT) in bulk fill resin composites and conventional class I restorations, and to establish a correlation between these factors. Class I cavities (4 x 5 x 4 mm), C-factor = 4.2, were performed on caries-free
Braz. oral res.. Publicado em: 18/12/2017
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7. Theoretical study of c-GaN/GaAs single heterojunction solar cells
ABSTRACT In this work a theoretical study of electrical behavior for a c-GaN/GaAs heterostructure as a photovoltaic device through a two-dimensional (2D) finite element numerical simulation is presented for a first time. I-V curves and electrical parameters like short circuit current (Isc), open circuit voltage (Voc), fill factor (FF) and efficiency (η) wer
Matéria (Rio J.). Publicado em: 02/10/2017
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8. Celdas solares sensibilizadas con colorantes fotosensibles obtenidos de plantas de la región sur de ecuador
Four vegetal species of the southern of Ecuador were used as sensitizers for making dye-sensitized solar cells (DSSCs). The effect of type and amount of material, type and time of maceration were tested in order to determine the best conditions of extraction. The extraction of the natural dye was made with acidified ethanol. The sensitizing agents were adsor
Quím. Nova. Publicado em: 2017-04
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9. Six-month color change and water sorption of 9 new-generation flowable composites in 6 staining solutions
Abstract Color match and water sorption are two factors that affect restorative materials. Discoloration is essential in the lifespan of restorations. The aim of this study was to evaluate color change and water sorption of nine flowable composites at multiple time points over 6 months. 60 samples of each composite were divided into two groups (Color Change
Braz. oral res.. Publicado em: 28/11/2016
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10. Flying in Clear Skies: Technical Arguments Influencing ANAC Regulations
Regulatory agencies possess the particularity of being controlled by non-elected politicians whose power is derived from delegations made by incumbent powers. There exists, however, a concern with the creation of institutional mechanisms that permit public participation, thus guaranteeing greater democratization and social control of the regulatory process.
Bras. Political Sci. Rev.. Publicado em: 2014-09
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11. Desenvolvimento de células solares com metalização por serigrafia : influência do emissor N+
The main goal of the solar cell industry is to obtain high efficiency and low production cost. One line of action is to increase the efficiency of industrial solar cell . The goal of this dissertation is to develop n+pn+ solar cells in p-type Si-Cz wafer, solar grade, with metallization by screen printing and to evaluate the influence of the n+ emitter and P
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/12/2012
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12. Otimização e comparação de processos para formação do campo retrodifusor com boro em células solares
The aim of this thesis was to develop and compare methods for the formation of the back surface field and emitter with boron using n-type and p-type solar-grade Si-Cz wafers as well as analyze and optimize a manufacturing process of solar cells with structure n+pp+ and back surface field formed by boron. The highly doped p+ region was formed by spin-on depos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/03/2012