Zobrazeno 1 - 10
of 2 579
pro vyhledávání: '"Gomes-Neto A"'
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 18, Iss 7, Pp 516-528 (2024)
Abstract The authors propose a system of closely coupled‐complementary frequency‐selective surfaces (FSSs) based on the four‐arms star geometry with dual‐ and triple‐passbands responses for 5G applications. Four complementary structure conf
Externí odkaz:
https://doaj.org/article/2d0ce9d6ca25490aae5aed1076997b9a
Autor:
Isaú de Sousa Silva Junior, Alfredo Gomes Neto, Maurício Weber Benjó da Silva, Antonio Luiz Pereira de Siqueira Campos
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 3 (2024)
Abstract This work proposes the integration of a monopole antenna with a frequency selective surface (FSS) with double square loop geometry, which operates in the ISM (2.4 - 2.4835 GHz) and IEEE 802.11 WLAN (5.15-5.725 GHz) bands. The FSS was develop
Externí odkaz:
https://doaj.org/article/283e99a3cc8847c4b560d613ee14e287
Autor:
ANTERO GOMES NETO, LUCAS CASTRO DE OLIVEIRA, FLÁVIO MENDES ALVES, LEONARDO FREIRE ALVES NOGUEIRA, VANESSA FERNANDES OLIVEIRA, ISRAEL LOPES MEDEIROS, ALESSANDRO WASUM MARIANI
Publikováno v:
Revista do Colégio Brasileiro de Cirurgiões, Vol 51 (2024)
ABSTRACT Objectives: To evaluate the early and late results of surgical treatment of patients with bronchiectasis, comparing the Video-Assisted Thoracic Surgery (VATS) vs. the open thoracotomy (OT). Methods: Observational retrospective study of patie
Externí odkaz:
https://doaj.org/article/3153623bff5f440e9d48956fd5c87686
Autor:
Victor Teatini Ribeiro, Rachel Basques Caligiorne, Aldrin Pedroza Martins, Antônio Pereira Gomes Neto, Paulo Pereira Christo
Publikováno v:
Medical Mycology Case Reports, Vol 45, Iss , Pp 100665- (2024)
A 78-year-old woman presented to hospital with altered mental status. Hyponatremia was diagnosed and treated. She maintained mental confusion despite normal sodium. No headache, fever or focal signs were present. CSF analysis showed chronic meningiti
Externí odkaz:
https://doaj.org/article/ea4e638367d741d39c55304886b7f5e6
Autor:
Thamyris da Silva Evangelista, Juliete da Silva Souza, Alexandre Jean René Serres, Alfredo Gomes Neto
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 2 (2024)
Abstract This paper introduces a novel reconfigurable superstrate using a band-stop frequency selective surface (FSS) based on four arms star geometry. The proposed reconfigurable superstrate is applied to a dipole antenna for use in 5G NR technology
Externí odkaz:
https://doaj.org/article/8531f5a7f5324a26be9820cf1046ec20
Autor:
Laura Mota Vieira Lima, Paula Costa Guimarães, Daniele de Oliveira Montenegro, Fernanda de Sousa Filgueira, José Gomes Neto Júnior, Ricardo Ney Cobucci, Kleyton Santos de Medeiros, Irami Araújo-Filho
Publikováno v:
Acta Cirúrgica Brasileira, Vol 39 (2024)
ABSTRACT Purpose: This study evaluated the prevalence of complications in the postoperative period of esophagogastric oncological surgeries. Methods: We conducted a retrospective cross-sectional study, adhering to the Strengthening the Reporting of O
Externí odkaz:
https://doaj.org/article/3efdc8556be64b749e4ce8701af0ed47
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 2 (2024)
Abstract The equivalent wave impedance circuit model (ECM-WI) is presented for the analysis of frequency selective surfaces (FSS). The development of the analytical model is based on homogenization theory, as well as analogies between wave theory and
Externí odkaz:
https://doaj.org/article/59b9597a405a4372a708220c0d0d1f84
Autor:
Maciel Alves de Oliveira, Pavlos I. Lazaridis, Zaharias D. Zaharis, Alfredo Gomes Neto, Antônio L. P. S. Campos, Alexandre J. R. Serres
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 2 (2024)
Abstract This paper presents a novel nature-inspired tri-band frequency selective surface (FSS) characterized by closely spaced bands, angular stability, and polarization independence. The FSS element adopts a segmented Fibonacci spiral geometry. Whi
Externí odkaz:
https://doaj.org/article/96287e9a9b76463281fc36a0142a36d3
Autor:
Priscila Kalinke da Silva, Carlos Henrique Sabino Caldas, Luiz Antonio Feliciano, Rogério Gomes Neto
Publikováno v:
Comunicação e Sociedade, Vol 45 (2024)
O objetivo da pesquisa foi investigar a construção de cenas enunciativas da campanha de cunho socioambiental mais premiada no “Festival de Cannes” em 2023, a fim de identificar e descrever os discursos midiatizados, que concorrem para a produç
Externí odkaz:
https://doaj.org/article/24cb589fc1ee4ac394283460677acf77
Autor:
Priscilla Kadja P. de M. Carneiro, Maraiza Prescila dos Santos, Alfredo Gomes Neto, Alexandre Jean R. Serres, Adolfo F. Herbster
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 2 (2024)
Abstract This paper proposes a methodology for developing antipodal Vivaldi antennas using RSIW (Ridge Substrate Integrated Waveguide) technology for a specific cut-off frequency. The technique employs metallic-vias and metalized cylindrical posts of
Externí odkaz:
https://doaj.org/article/a5b3dd66cf2f43eb8a2a77ad8166843d