Variable Load
Mostrando 1-12 de 149 artigos, teses e dissertações.
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1. Reliability assessment of cold-formed steel beams by the FORM method
Abstract This article presents a procedure for the reliability assessment of cold-formed steel beams based on the Direct Strength Method (DSM) and the Effective Section Method (ESM). Using a comprehensive database, a statistical analysis of the test results was performed to determine the statistical properties of the professional factor random variable. The
REM, Int. Eng. J.. Publicado em: 2021-06
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2. High Efficiency Continuous Inverse Class-F Power Amplifier with Modified Current Waveform
Abstract Continuous inverse class-F (CICF) is a recent mode of harmonically-tuned RF power amplifiers used to extend the operating bandwidth of the conventional narrowband class-F−1 power amplifier by producing variable set of drain current waveforms and load admittances that give the same operating efficiency. In this work, a new approach of analysis is d
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-09
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3. DIRECT CONNECTION PHOTOVOLTAIC SYSTEM IN MULTI-MOTOR APPLICATION FOR THE RURAL SECTOR
ABSTRACT Photovoltaic pumping systems equipped with variable speed drive have been consolidated as an alternative for water supply in rural locations where energy services are unavailable. Such systems are of the direct connection type and, therefore, it is likely that their operation occurs in two situations: when energy is available and when the reservoir
Eng. Agríc.. Publicado em: 2020-06
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4. ANÁLISE DA FORÇA DE REAÇÃO DO SOLO DA MARCHA DE JOVENS E IDOSOS SOB A INFLUÊNCIA DA SIMULAÇÃO DE SOBREPESO
RESUMO O objetivo deste estudo foi avaliar as forças de reação do solo (FRS) em individuos jovens e idosos sob a influência do sobrepeso simulado em diferentes velocidades de marcha. Método: 30 participantes, 15 jovens (JOV; 22,0±3,7 anos) e 15 idosos (IDS; 69,8±6,4 anos) caminharam em uma passarela com e sem carga adicional. A simulação do sobrepes
J. Phys. Educ.. Publicado em: 20/12/2019
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5. SUSTAINED VIROLOGIC RESPONSE RATE IN CHRONIC HEPATITIS C PATIENTS THROUGH DIRECT-ACTING ANTIVIRALS THERAPY
RESUMO CONTEXTO: O manejo e a possibilidade de erradicação da infecção pelo vírus da hepatite C têm sido muito pesquisados nos últimos anos pela importância que representam na saúde pública para a população mundial. A obtenção de dados que auxiliem o enfrentamento dessa patologia resulta na melhor qualidade de vida dos seus portadores. O pres
Arq. Gastroenterol.. Publicado em: 28/11/2019
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6. Transtornos Mentais Comuns estão associados a maior carga viral em Pessoas Vivendo com HIV
RESUMO O presente estudo teve como objetivo investigar a associação entre Transtornos Mentais Comuns (TMC) e carga viral de Pessoas Vivendo com Vírus da Imunodeficiência Humana - HIV (PVHIV) em seguimento clínico. Foi realizado um estudo transversal com 307 PVHIV com ≥ 18 anos de idade que estavam em terapia antirretroviral no Serviço de Assistência
Saúde debate. Publicado em: 05/08/2019
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7. What do we know about Neotropical trap-nesting bees? Synopsis about their nest biology and taxonomy
Abstract Cavity-nesting bees are enigmatic because they are difficult to observe in the wild, hence trap-nests (man-made cavities) provide the means by which these bees may be studied. Trap-nests is an efficient methodology to study these bees and are common worldwide. These traps have been used for a variety of reasons, including inventories, to examine pol
Pap. Avulsos Zool.. Publicado em: 13/06/2019
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8. Hankel transformation method for solving the Westergaard problem for point, line and distributed loads on elastic half-space
Abstract The Hankel transformation method was used in this work to determine the normal and shear stress distributions due to point, line and distributed loads applied to the surface of an elastic media. The elastic media considered in this study was assumed to be inextensible in the horizontal directions, and the only non-vanishing displacement component is
Lat. Am. j. solids struct.. Publicado em: 04/02/2019
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9. Bud load management on table grape yield and quality – cv. Sugrathirteen (Midnight Beauty®)
ABSTRACT Viticulture is an activity of great economic and social importance in the Submedium region of the São Francisco River Valley, with emphasis on table grape and wine production. With the increasing expansion of the viticulture, a growing number of alternatives that do not affect fruit quality have been studied to maximize table grape yield, such as p
Bragantia. Publicado em: 25/10/2018
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10. Carbon based DLC films: Influence of the processing parameters on the structure and properties
ABSTRACT Hydrogenated carbon-based films, such as DLC (“Diamond Like Carbon”), have interesting properties such as excellent tribological behavior, low friction coefficient, high superficial hardness and good wear resistance; they are chemically inert and highly corrosion resistant. They are deposited by means of PACVD (plasma-assisted chemical vapor dep
Matéria (Rio J.). Publicado em: 19/07/2018
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11. Effect of Process Parameters on Microstructure and Mechanical Properties of Friction Stir Welded Cast Nickel Aluminum Bronze Alloy (C95800)
In the present study, Friction Stir Welding (FSW) of Nickel Aluminum Bronze (NAB) alloy was carried out by varying the axial load, rotation speed and welding speed rate. Micro-structural analyses of these samples revealed the different grain sizes and shapes of the various zones. Hardness and tensile strength tests were carried out for the samples welded at
Mat. Res.. Publicado em: 24/05/2018
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12. STEPWISE SELECTION OF VARIABLES IN DEA USING CONTRIBUTION LOADS
ABSTRACT In this paper, we propose a new methodology for variable selection in Data Envelopment Analysis (DEA). The methodology is based on an internal measure which evaluates the contribution of each variable in the calculation of the efficiency scores of DMUs. In order to apply the proposed method, an algorithm, known as “ADEA”, was developed and imple
Pesqui. Oper.. Publicado em: 2018-04