Search Results - "Oliveira, Júlio R"
-
1
Measles outbreak in a tertiary level hospital, Porto, Portugal, 2018: challenges in the post-elimination era
Published in Euro surveillance : bulletin européen sur les maladies transmissibles (17-05-2018)“…A measles outbreak has been occurring in a healthcare setting in Porto, Portugal, since early March 2018, posing public health challenges for a central…”
Get full text
Journal Article -
2
Architecture on demand design for high-capacity optical SDM/TDM/FDM switching
Published in Journal of optical communications and networking (01-01-2015)“…Reconfigurable optical add/drop multiplexers (ROADMs) are key elements in operators' backbone networks. The breakthrough node concept of architecture on demand…”
Get full text
Journal Article -
3
Implementation of an infection control program with emphasis on cohorting to patients with carbapenemase-producing Enterobacteriaceae. The experience of 2 years in a tertiary teaching hospital in northern Portugal
Published in Porto biomedical journal (04-06-2020)“…The emergence of carbapenemase-producing Enterobacterales (CPE) represents a major public health threat. Our purpose was to evaluate a surveillance and…”
Get full text
Journal Article -
4
Application of Machine Learning Techniques for Amplitude and Phase Noise Characterization
Published in Journal of lightwave technology (01-04-2015)“…In this paper, tools from machine learning community, such as Bayesian filtering and expectation maximization parameter estimation, are presented and employed…”
Get full text
Journal Article -
5
Risk factors for readmission after hospital discharge in chronic obstructive pulmonary disease. The role of quality of life indicators
Published in Revista portuguesa de pneumologia (English ed.) (01-09-2010)“…AbstractAimsTo identify demographic, clinical, functional and inherent quality of life (QOL) and depression factors with impact on use of the Emergency…”
Get full text
Journal Article -
6
Lung abscesses: Review of 60 cases
Published in Revista portuguesa de pneumologia (English ed.) (01-03-2009)“…AbstractLung abscesses (LA) carry with them severe clinical and social implications. The authors retrospectively analyse case files from a tertiary…”
Get full text
Journal Article -
7
Hybrid distributed Raman/EDFA amplifier with hybrid automatic gain control for reconfigurable WDM optical networks
Published in Journal of Microwaves, Optoelectronics and Electromagnetic Applications (01-12-2013)“…Nowadays, optical amplifiers designs are induced by new requirements generated by optical networks. The introduction of WDM reconfigurable networks with…”
Get full text
Journal Article -
8
Dynamic gain equalization for erbium doped fiber amplifiers based on optoceramic sinusoidal filter cascade
Published in Microwave and optical technology letters (01-03-2011)“…This article presents an experimental demonstration and a systemic analysis of a dynamic gain equalizer for erbium doped fiber amplifier based on a cascade of…”
Get full text
Journal Article -
9
Risk factors for readmission after hospital discharge in chronic obstructive pulmonary disease. The role of quality of life indicators
Published in Revista portuguesa de pneumologia (01-09-2010)“…To identify demographic, clinical, functional and inherent quality of life (QOL) and depression factors with impact on use of the Emergency Services (ES) or…”
Get more information
Journal Article -
10
Transmission of a 1.12 Tb/s superchannel over 452 km fiber
Published in Journal of Microwaves, Optoelectronics and Electromagnetic Applications (01-12-2013)“…This paper describes the transmission of a non-guard interval 1.12 Tb/s 10-carrier superchannel, launched into a 226 km recirculating loop. After two round…”
Get full text
Journal Article -
11
Nonlinear effects compensation in Optical Coherent PDM-QPSK Systems
Published in Journal of Microwaves, Optoelectronics and Electromagnetic Applications (01-12-2013)“…Nonlinear effects has been appointed as the main limitation in coherent optical fiber transmission. Digital Back-Propagation algorithms and Maximum Likelihood…”
Get full text
Journal Article -
12
Risco de reinternamento na doença pulmonar obstrutiva crónica – Estudo prospectivo com ênfase no valor da avaliação da qualidade de vida e depressão
Published in Revista portuguesa de pneumologia (01-09-2010)“…O objectivo do estudo é identificar factores demográficos, clínico-funcionais e inerentes à qualidade de vida (QV) e depressão, com impacto na utilização do…”
Get full text
Journal Article -
13
Abcessos pulmonares: Revisão de 60 casos
Published in Revista portuguesa de pneumologia (01-03-2009)“…Abcessos pulmonares (AP) acarretam graves implicações clínicas e sociais. Os autores analisam retrospectivamente a casuística dum hospital terciário…”
Get full text
Journal Article -
14
Recurrent orthodeoxia and patent foramen ovale
Published in Revista portuguesa de cardiologia (01-11-2010)“…Patent foramen ovale (PFO) occurs in 25% of healthy adults. It can lead to paradoxical embolization, migraine and respiratory failure (RF). The authors present…”
Get more information
Journal Article -
15
Energy-efficient Gaussian filter for image processing using approximate adder circuits
Published in 2015 IEEE International Conference on Electronics, Circuits, and Systems (ICECS) (01-12-2015)“…This paper proposes the use of approximate adder circuits for 3×3 and 5×5 Gaussian filter implementations. The Gaussian filter is a convolution operator which…”
Get full text
Conference Proceeding -
16
Lung abscesses: review of 60 cases
Published in Revista portuguesa de pneumologia (01-03-2009)“…Lung abscesses (LA) carry with them severe clinical and social implications. The authors retrospectively analyse case files from a tertiary hospital…”
Get full text
Journal Article -
17
Transmission of a 20 Gb/s NRZ OOK signal throughout a 390 km fiber link and a cascade of 11 x 50 GHz filters and 9 x EDFAs
Published in Journal of Microwaves, Optoelectronics and Electromagnetic Applications (01-06-2011)“…This paper presents a qualitative analysis of the impact caused by fiber propagation effects and by a cascade of optical filters, designed for 10 Gb/s NRZ OOK…”
Get full text
Journal Article -
18
High-Performance and Small Form-Factor Tunable Lasers for High-Capacity Telecom Systems
Published in 2019 SBFoton International Optics and Photonics Conference (SBFoton IOPC) (01-10-2019)“…In this work, an overview of requirements for compact optical modules and devices is presented, focusing on optical laser sources. Regarding coherent…”
Get full text
Conference Proceeding -
19
Abcessos pulmonares: Revisão de 60 casos Lung abscesses: Review of 60 cases
Published in Revista portuguesa de pneumologia (01-03-2009)“…Abcessos pulmonares (AP) acarretam graves implicações clínicas e sociais. Os autores analisam retrospectivamente a casuística dum hospital terciário…”
Get full text
Journal Article -
20
A multilevel gain all-optical gain-controlled EDFA with suppressed relaxation oscillations
Published in Microwave and optical technology letters (01-06-2006)“…The characterization of an all‐optical gain‐controlled erbium‐doped fiber amplifier using an embedded variable optical attenuator in the feedback loop is…”
Get full text
Journal Article