Search Results - "Pereira, Luiz Antônio"

The influence of antenna gain and beamwidth used in OSSEUS in the screening process for osteoporosis by Pinheiro, Bruno de Melo, Campos, Antônio Luiz Pereira de Siqueira, de Carvalho, Dionísio Dias Aires, Cruz, Agnaldo Souza, de Medeiros Valentim, Ricardo Alexsandro, Veras, Nicolas Vinícius Rodrigues, dos Santos, João Paulo Queiroz

“…Applications on electromagnetic waves in the field of biotelemetry have increased in the latest years, being used to prevent, diagnose, and treatment of…”
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Surface Roughness Effects on Flows Past Two Circular Cylinders in Tandem Arrangement at Co-Shedding Regime by Moraes, Paulo Guimarães de, Alcântara Pereira, Luiz Antonio

“…This paper contributes by investigating surface roughness effects on temporal history of aerodynamic loads and vortex shedding frequency of two circular…”
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A Lagrangian Description of Buoyancy Effects on Aircraft Wake Vortices from Wing Tips near a Heated Ground Plane by Moraes, Paulo Guimarães de, Oliveira, Marcos André de, Bimbato, Alex Mendonça, Pereira, Luiz Antonio Alcântara

“…The present paper introduces the key ideas of a purely Lagrangian temperature particle method, which includes preheating effects on fluid flow nearest a heated…”
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Control and Suppression of Vortex Shedding from a Slightly Rough Circular Cylinder by a Discrete Vortex Method by Oliveira, Marcos André de, Moraes, Paulo Guimarães de, Andrade, Crystianne Lilian de, Bimbato, Alex Mendonça, Alcântara Pereira, Luiz Antonio

“…A discrete vortex method is implemented with a hybrid control technique of vortex shedding to solve the problem of the two-dimensional flow past a slightly…”
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A Lagrangian roughness model integrated with the vortex method for drag coefficient estimation and flow control investigations around circular cylinder for a wide range of Reynolds numbers by de Oliveira, Marcos André, Alcântara Pereira, Luiz Antonio

“…This paper describes the development of a Lagrangian roughness model to simulate the effect of surface roughness in two-dimensional flow on the proximity of…”
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Study of Surface Roughness Effect on a Bluff Body—The Formation of Asymmetric Separation Bubbles by Bimbato, Alex Mendonça, Alcântara Pereira, Luiz Antonio, Hirata, Miguel Hiroo

“…Turbulent flows around bluff bodies are present in a large number of aeronautical, civil, mechanical, naval and oceanic engineering problems and still need…”
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Effect of Surface Roughness on Aerodynamic Loads of Bluff Body in Vicinity of Smoothed Moving Wall by Oliveira, Marcos André de, Alcântara Pereira, Luiz Antonio

“…This paper contributes to a new Lagrangian vortex method for the statistical control of turbulence in two-dimensional flow configurations around a rough…”
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Long-Term Effect of Crop Succession Systems on Soil Chemical and Physical Attributes and Soybean Yield by Alves, Milla S S, Nascimento, Natanael M, Pereira, Luiz Antonio F M, Barbosa, Thiago A, da Costa, Claudio Hideo Martins, Guimarães, Tiara M, Bezerra, Aracy Camilla T P, Machado, Deivid L

“…Most soybean producers in the Cerrado biome use the direct seeding system, making it essential to cultivate cash or cover crops in the off-season, to promote…”
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Numerical experiments of the flow around a bluff body with and without roughness model near a moving wall by Alcântara Pereira, Luiz Antonio, de Oliveira, Marcos André, de Moraes, Paulo Guimarães, Bimbato, Alex Mendonça

“…Numerical tests at high Reynolds number flows were taken on circular cylinder placed near and parallel to a moving ground. A moving ground running at the same…”
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Effects of surface roughness and wall confinement on bluff body aerodynamics at large-gap regime by de Moraes, Paulo Guimarães, de Oliveira, Marcos André, de Andrade, Crystianne Lilian, Bimbato, Alex Mendonça, Alcântara Pereira, Luiz Antonio

“…A purely Lagrangian vortex method is employed to investigate turbulent flows past a rough circular cylinder under moving wall effect at large-gap regime,…”
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Higher Order Mode Attenuation in Microstrip Patch Antenna with DGS H Filter Specification from 5 to 10 GHz Range by Souza, Francisco Ary Alves de, Campos, Antonio Luiz Pereira de Siqueira, Gomes Neto, Alfredo, Serres, Alexandre Jean René, Albuquerque, Camila Caroline Rodrigues de

“…Abstract This work proposes the application of a slot in the ground plane, Defected Ground Structure (DGS), of a microstrip patch antenna. The application of…”
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Lagrangian Vortices Interactions Using Large-Eddy Simulation (LES) and Surface Roughness Model—Application for Aircraft Wake Vortices with Crosswind by Carvalho, Gabriel Ferraz Marcondes de, Vidille, Marília Fernandes, Bimbato, Alex Mendonça, Alcântara Pereira, Luiz Antonio

“…A new technique for two-dimensional vortex methods is presented. The vorticity field is discretized and represented by vortex blobs. Viscosity and roughness…”
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Grating Lobes Suppression in Frequency Selective Surfaces Using Electromagnetic Band Gap with Square Holes by Bezerra, Tiago dos Santos, Campos, Antonio Luiz Pereira de Siqueira, Lira, Ruann Victor de Andrade, Gomes Neto, Alfredo

“…Abstract In this paper, the authors present a proposal for an application of electromagnetic bandgap (EBG), for suppression of grating lobes, in frequency…”
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The tangential variation of a localized flux-type eigenvalue problem by Pardo, Rosa, Pereira, Antônio Luiz, Sabina de Lis, José C.

“…In this work the differentiability of the principal eigenvalue λ = λ 1 ( Γ ) to the localized Steklov problem − Δ u + q u = 0 in Ω, ∂ u ∂ ν = λ χ Γ ( x ) u on…”
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Sedimentary constraints on the development of a narrow deep strait (São Sebastião Channel, SE Brazil) by Alcántara-Carrió, Javier, Sasaki, Dalton Kei, Mahiques, Michel Michaelovitch de, Taborda, Rui, de Souza, Luiz Antonio Pereira

“…The São Sebastião Channel (SSC), which separates São Sebastião Island from the continent, is a deep elongated strait on the inner shelf of the São Paulo Bight…”
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The Santo Antônio Bank: a high-resolution seismic study of a deflected ebb-tidal delta located at the entrance of a large tropical bay, eastern Brazil by Coni e Mello, Ana Clara, Dominguez, José Maria Landim, de Souza, Luiz Antonio Pereira

“…The Santo Antônio Bank (SAB) is a large sand accumulation on the inner continental shelf of Salvador City, next to Todos os Santos Bay (TSB) entrance, eastern…”
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An extensive pockmark field on the upper Atlantic margin of Southeast Brazil: spatial analysis and its relationship with salt diapirism by de Mahiques, Michel Michaelovitch, Schattner, Uri, Lazar, Michael, Sumida, Paulo Yukio Gomes, Souza, Luiz Antonio Pereira de

“…We present new evidence for the existence of a large pockmark field on the continental slope of the Santos Basin, offshore southeast Brazil. A recent…”
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Nickel ferrite powder resonator antenna capsuled by low permittivity wood materials by Silva, Isaac Barros Tavares da, D'Assunção, Adaildo Gomes, Oliveira, João Bosco Lucena, Guerra, Juan Rafael Filgueira, Campos, Antonio Luiz Pereira de Siqueira, Sousa, Matheus Emanuel Tavares

“…This article presents the synthesizing of nickel ferrite by sol‐gel modified ionic coordination reaction technique with application in millimetric wave Ferrite…”
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A design proposal for ultrawide band frequency selective surface by Segundo, Francisco Carlos Gurgel da Silva, Campos, Antonio Luiz Pereira de Siqueira, Gomes Neto, Alfredo

“…In this paper a three layer FSS is described which provides a ultrawide band (UWB) response. The layers use plain rectangular patches, and rectangular patches…”
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Multiband frequency selective surfaces with a modified multifractal cantor geometry by Braz, Érico Cadineli, Campos, Antonio Luiz Pereira de Siqueira

“…Self-affine property of a modified multifractal Cantor geometry is exploited to design frequency selective surfaces (FSS) with multiband response. The main…”
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