18 documents found, page 1 of 2
Gold-Mushroom Microelectrode Arrays and the Quest for Intracellular-Like Record...
Teixeira, H; Dias, C; Paulo Aguiar; ventura, j.The ongoing search to decode the brain communication system has propelled major advancements in bioelectronics research. From these, planar microelectrode arrays (MEAs) offer the possibility to record neuronal signals for extremely long periods of time and to probe fundamental principles of learning and adaptation. Unfortunately, MEAs have low neuronal coupling and are thus insensitive to sub-threshold neuronal...
Spatial patterns in hospital-acquired infections in Portugal (2014–2017)
Teixeira, H; Freitas, A; Sarmento, A; Nossa, P; Gonçalves, H; Pina, MFBackground: Hospital-Acquired Infections (HAIs) represent the most frequent adverse event associated with healthcare delivery and result in prolonged hospital stays and deaths worldwide. Aim: To analyze the spatial patterns of HAI incidence from 2014 to 2017 in Portugal. Methods: Data from the Portuguese Discharge Hospital Register were used. We selected episodes of patients with no infection on admission and w...
Regional drinking water composition effects on hip fracture risk: A spatial ana...
Oliveira, CM; Teixeira, H; Alves, SM; Pina, MFGeographical variation on hip fractures (HF) may be related to the geographical variation of drinking water composition (DWC); minerals in drinking water may contribute to its fragility. We aim to investigate the effects of DWC on HF risk in Portugal (2000-2010). From National Hospital Discharge Register we selected admissions of patients aged =50 years, diagnosed with HF caused by low/moderate energy traumas. ...
Nocardia Cyriacigeorgica and Aspergillus Co-Infection in a Patient with Giant-C...
Gomes, F; La Feria, P; Costa, C; Teixeira, HImmunosuppressed patients are at greater risk of unusual infections. The authors present the case of a woman with giant-cell arteritis, on oral steroids, who developed cavitating pneumonia due to co-infection with Aspergillus and Nocardia. Reports of such co-infection are rare in the literature. This case highlights the importance of considering rare pathogens in immunosuppressed patients who present with non-s...
The influence of socioeconomic, biogeophysical and built environment on old-age...
Ribeiro, AI; Autran, R; Teixeira, H; Carvalho, MS; Pina, MFOld-age survival is a good indicator of population health and regional development. We evaluated the spatial distribution of old-age survival across Porto neighbourhoods and its relation with physical (biogeophysical and built) and socioeconomic factors (deprivation). Smoothed survival rates and odds ratio (OR) were estimated using Bayesian spatial models. There were important geographical differentials in the ...
An ELM-AE State Estimator for real-time monitoring in poorly characterized dist...
Barbeiro, PNP; Teixeira, H; Jorge Pereira; Bessa, RIn this paper a Distribution State Estimator (DSE) tool suitable for real-time monitoring in poorly characterized low voltage networks is presented. An Autoencoder (AE) properly trained with Extreme Learning Machine (ELM) technique is the 'brain' of the DSE. The estimation of system state variables, i.e., voltage magnitudes and phase angles is performed with an Evolutionary Particle Swarm Optimization (EPSO) al...
State Estimation in Distribution Smart Grids Using Autoencoders
Pereira Barbeiro, PNP; Krstulovic, J; Teixeira, H; Pereira, J; Soares, FJ; Iria, JPThis work proposes an innovative method based on autoencoders to perform state estimation in distribution grids, which has as main advantage the fact of being independent of the network parameters and topology. The method was tested in a real low voltage grid (incorporating smart grid features), under different scenarios of smart meter deployment. Simulations were performed in order to understand the necessary ...
Tools for Address Georeferencing – Limitations and Opportunities Every Public H...
Ribeiro, AI; Olhero, A; Teixeira, H; Magalhães, A; Pina, MFVarious address georeferencing (AG) tools are currently available. But little is known about the quality of each tool. Using data from the EPIPorto cohort we compared the most commonly used AG tools in terms of positional error (PE) and subjects' misclassification according to census tract socioeconomic status (SES), a widely used variable in epidemiologic studies. Participants of the EPIPorto cohort (n = 2427)...
Abcesso Hepático Amebiano. A Propósito de um Caso Clínico
Valente, M; Acúrcio, L; Estrada, H; Mihon, C; Neves, D; Margarido, E; Teixeira, HA amebíase é uma das doenças parasitárias mais comuns no mundo. As principais formas invasivas da doença são a colite amebiana e o abcesso hepático. Apresenta-se o caso clínico de um homem de 42 anos admitido com um quadro agudo de febre elevada e dor abdominal no hipocôndrio direito com dois dias de evolução. A tomografia axial computorizada do abdómen revelou a presença de 3 lesões abcedadas a nível do lobo d...
Ecocardiografia em Urgência
Marcão, I; Teixeira, H; Longo, S; Robalo, M; Oliveira, S; Fevereiro, T; Godinho, A; Ramos, A; Pereira, TA optimização do uso da ecocardiografia encontra-se longe de ter sido alcançada. A dificuldade ou impossibilidade de permanência física hospitalar de cardiologista com experiência em ecocardiografia nas 24horas, levou à abertura e divulgação desta técnica a outras especialidades que lidam com o doente urgente. O reconhecimento da importância da ecocardiografia no diagnóstico, prognóstico e implicação terapêutic...