Ports
Mostrando 1-12 de 165 artigos, teses e dissertações.
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1. Phase Adjustment of S-Parameters from Coupled Resonator Filters
Abstract This paper presents a method to cancel the constant phase loading and transmission line that are added to the S-parameters of coupled resonant networks. Thus, the phase-corrected S-parameters may be used to obtain a rational model together with its representative coupling matrix. This method is applicable to lossy and lossless coupled resonator netw
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. A Compact Dual-Band Self-Diplexing MIMO Patch Antenna for ISM and X-Band Communications
Abstract A compact, dual-band, and self-diplexing MIMO patch antenna with a shared aperture is presented for Industrial scientific medical (ISM) band and X-band communications. The structure consists of two orthogonal feed lines and a rectangular slot in a square patch. The size of the FR4 substrate is 50 × 50 × 1.6 mm3. The designed structure operates at
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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3. Minimal Invasive Thoracoscopic Mitral Valve Surgery
ABSTRACT Introduction: The totally thoracoscopic approach for mitral valve (MV) disease is a minimally invasive method. We investigated the procedure’s feasibility, safety and effectiveness when it was performed by an experienced operator. Methods: We retrospectively analysed 96 consecutive patients with MV disease treated between March 2016 and November
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
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4. Step-by-step optimisation of robotic-assisted radical prostatectomy using augmented reality
ABSTRACT Introduction: Surgical training will be complemented by digitalisation, as the COVID 19 pandemic continues (1). Proximie is an augmented reality (AR) platform that can display up to 4 native camera views, with live or semi live telementoring. It can optimise ergonomics of the surgeon at the console (2), and robotic instrument orientation. We descri
International braz j urol. Publicado em: 2022
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5. Complex Re-do robotic pyeloplasty using cryopreserved placental tissue: an adjunct for success
ABSTRACT Introduction and Objectives: Management of recurrent ureteropelvic junction obstruction (UPJO) following pyeloplasty presents a challenging clinical problem. Failure of initial pyeloplasty is, in part, secondary to ureteral devascularization and subsequent fibrosis. In this video, we present a case of an anastomotic augmentation with cryopreserved
Int. braz j urol.. Publicado em: 2021-02
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6. Wide Band Stop Response Using Interdigital Capacitor/CSRR DGS in Elliptical Microstrip Low-Pass Filter
Abstract In this paper, a compact elliptic-response microstrip low pass filter (LPF) is presented with a wide stop-band using stepped impedance resonators. With high attenuation in the stop-band, the overall size reduction of the proposed filter is achieved using a novel defected ground structure technique using an interdigital capacitor and complementary sp
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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7. Single port robot-assisted transperitoneal kidney transplant using the sp® surgical system in a pre-clinical model
ABSTRACT Introduction Minimally invasive surgery has recently gained interest for kidney transplantation. We aimed to describe the step-by-step technique for single-port robotic transperitoneal kidney transplantation using the SP® surgical system (Intuitive Surgical, Sunnyvale, Ca) in a pre-clinical model. Materials and Methods A male fresh cadaver mode
Int. braz j urol.. Publicado em: 2020-08
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8. Editorial Comment: Erectile Dysfunction and Premature Ejaculation in Homosexual and Heterosexual Men: A Systematic Review and Meta-Analysis of Comparative Studies
ABSTRACT Introduction Minimally invasive surgery has recently gained interest for kidney transplantation. We aimed to describe the step-by-step technique for single-port robotic transperitoneal kidney transplantation using the SP® surgical system (Intuitive Surgical, Sunnyvale, Ca) in a pre-clinical model. Materials and Methods A male fresh cadaver mode
Int. braz j urol.. Publicado em: 2020-08
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9. Modified Ring Power Divider Using Stepped-Impedance Resonator
Abstract In this paper, the design of a modified ring power divider dedicated for wideband communication or measurement systems is presented. The proposed power divider is built by using a conventional ring power divider and an additional Stepped-Impedance Resonator (SIR). The even-odd mode analysis is used to derive the design equations. In order to observe
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-03
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10. COMÉRCIO ILEGAL DE AFRICANOS NO INTERIOR DO BRASIL OITOCENTISTA: O CASO DO PATACHO HERMINIA (PARAÍBA - 1850)
Resumo Os estudos sobre o tráfico de africanos para o Brasil têm trazido importantes informações acerca da organização dessa atividade. O funcionamento desde a África, passando pelos navios negreiros, e a viagem atlântica até a chegada dos escravizados no Brasil, bem como suas rotas de venda, têm sido as principais preocupações. O foco volta-se,
Almanack. Publicado em: 13/12/2019
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11. O pito (de) holandês: cachimbos arqueológicos de caulim do Recife e de Salvador
Resumo Os cachimbos europeus de caulim, produzidos especialmente entre os séculos XVII e XIX, eram industrializados e descartados rapidamente. Ainda, os estilos decorativos e de marcas de fabricante foram vários e relativamente bem marcados no tempo. Portanto, são particularmente úteis como instrumento de datação de sítios, camadas e feições, mesmo
Bol. Mus. Para. Emílio Goeldi. Ciênc. hum.. Publicado em: 02/12/2019
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12. The first survey of human T-cell lymphotropic viruses (HTLV) in HIV/AIDS patients in Santa Catarina State, Brazil
ABSTRACT Santa Catarina is a Brazilian State that has reported the lowest prevalence of human T-cell lymphotropic viruses (HTLV-1/2) in blood donors (0.04%). Although it presents ports, airports and roads that facilitate the entrance and dissemination of new infectious agents, no information exists concerning the HTLV-1/2 infections in HIV/AIDS patients. Thi
Rev. Inst. Med. trop. S. Paulo. Publicado em: 10/10/2019