10 documents found, page 1 of 1
The effects of motivation in student academic success
Caldeira, A.; Lopes, S. O.; Costa, A. R.; Figueiredo, I.It is common sense, that the student́s motivation is a key element within the learning process, and technology is an important tool to motivate students for learning. The modern world is becoming a place where a huge variety of technologies emerges, for example, smartphones, computers, videos... The use of technology, in the learning process, is a breath of fresh air inside and outside the classroom Videos is a...
Sex steroids of black scabbardfish, Aphanopus carbo, in relation to reproductiv...
Farias, I.; Couto, Elsa; Lagarto, N.; Delgado, J.; Canario, Adelino; Figueiredo, I.Black scabbardfish, Aphanopus carbo, is a commercially important species that takes distant migrations throughout its life cycle. Sex steroids were measured by radioimmunoassay in the blood plasma of specimens caught off the Madeira Archipelago and mainland Portugal to link this species migratory path with its reproductive cycle. Furthermore, a pilot study using Mozambique tilapia (Oreochromis mossambicus) was ...
Portuguese fisheries in seamounts of Madeira-Tore (NE Atlantic)
Campos, Aida; Lopes, Paulo; Fonseca, Paulo; Figueiredo, I.; Henriques, Victor; Gouveia, N.; Delgado, J.; Gouveia, L.; Amorim, A.; Araujo, G.; Drago, T.The activity of the Portuguese fishing fleet operating near seamounts of the Madeira Tore geologic complex was analyzed. The main objective is to identify the different fisheries taking place in the area, characterize the spatial patterns of vessels activity and estimate the fishing intensity, thus contributing to better inform management decisions. Vessel Monitoring System (VMS) and e-logbook data for the peri...
Potential herb-drug interactions found in a community pharmacy
Batista, C.; Pinho, C.; Castel-Branco, M.; Caramona, M.; Figueiredo, I.Phytotherapy has always played a leading role in therapeutics. However, a strong knowledge of the risk-benefit relationship of herbal products by patients and health professionals is necessary. The goals of this study were to characterize the consumption pattern of medicinal plants in patients in a community pharmacy, identify potential herb-drug interactions, and establish a list of recommendations for health ...
Automatic extraction of tide-coordinated shoreline using open source software a...
Gonçalves, G.; Duro, N.; Sousa, E.; Figueiredo, I.Due to both natural and anthropogenic causes, the coastal lines keeps changing dynamically and continuously their shape, position and extend over time. In this paper we propose an approach to derive a tide-coordinate shoreline from two extracted instantaneous shorelines corresponding to a nearly low tide and high tide events. First, all the multispectral images are panshaperned to meet the 15 meters spatial res...
Reproductive biology of cuckoo ray Leucoraja naevus
Maia, C.; Erzini, Karim; Serra-Pereira, B.; Figueiredo, I.The present study is the first to provide data on the reproductive biology of cuckoo ray Leucoraja naevus in Portuguese continental waters. No difference in size at maturity was detected between sexes, which was estimated as 56 cm total length. Spawning occurs all year round, but maximum activity was during winter months. Maximum fecundity is c. 63 eggs female-1 year-1. Encapsulated eggs are released in batches...
Validação de metodologia analítica para determinação de oxalato na urina
Grande, Carina; Farinha, R.; Figueiredo, I.; Moreira, Anabela; Neves, Fabiana; Amorim, ManuelaA validação metodológica permite evidenciar se os resultados obtidos por um método são confiáveis, tornando-se um elemento essencial na qualidade. Neste estudo, cujo objectivo é validar a metodologia enzimática para determinação de oxalato na urina, incluíram-se 30 amostras de urina de 24horas, pré-tratadas e estudadas em dois auto-analisadores. Os valores dos limites de detecção e quantificação foram 0,98 e 0,...
Modeling and numerical study of actuator and sensor effects for a laminated pie...
Costa, L.; Figueiredo, I.; Leal, R.; Oliveira, P.; Stadler, G.The aim of this paper is to derive a reduced model for a piezoelectric plate and to study its actuator and sensor capabilities. In the first part, we focus on the asymptotic modeling for thin plates formed by stacking layers of different piezoelectric materials. In the asymptotic model, the mechanical and electric unknowns are shown to be partly decoupled. In the second part, we study the actuator and sensor ca...
Smart capabilities of a laminated piezoelectric plate model
Costa, I.; Figueiredo, I.; Leal, R.; Oliveira, P.; Stadler, G.This paper focuses on the modelling and analysis of actuator and sensor effects for thin laminated plates, which are formed by stacking several layers of different piezoelectric materials. We first discuss features and properties of a two-dimensional asymptotic model for a piezoelectric anisotropic plate, whose unknowns are the Kirchhoff-Love displacement and the electric potential. We prove that the latter is ...
Multiple- and single-objective approaches to laminate optimization with genetic...
Costa, L.; Fernandes, L.; Figueiredo, I.; Júdice, J.; Leal, R.; Oliveira, P.In this paper an application of a genetic algorithm to a material- and sizing-optimization problem of a plate is described. This approach has obvious advantages: it does not require any derivative information and it does not impose any restriction, in terms of convexity, on the solution space. The plate optimization problem is firstly formulated as a constrained mixed-integer programming problem with a single o...