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Frequency and Stochastic Domain Models for Two Geometries of the IPS Wave Power...
Cândido, J.; Justino, Paulo Alexandre; Henriques, J.C.C.Frequency-domain analysis is applied to a geometry of the original IPS buoy device concept. The analysis is particularly useful in the early development stages to establish the response of power take-off mechanism characteristic parameters to different frequencies of the wave spectrum. Optimal mechanical damping and spring coefficients are computed for some parameters restrictions. Absorbed power, capture width...
Modelling, control and Pontryagin Maximum Principle for a two-body wave energy ...
Justino, Paulo Alexandre; Cândido, J.Frequency domain analysis is applied to a wave energy device composed by two coaxial axisymmetric bodies. For each frequency optimal damping coefficient values which maximize absorbed power are obtained. Several displacement amplitude restriction scenarios are considered. A stochastic model to describe the device’s behaviour in irregular waves is developed. Optimal mechanical damping and spring coefficients are...
Frequency-domain and stochastic model for an articulated wave power device
Cândido, J.; Justino, Paulo AlexandreTo have the first look into device performance, analytical and numerical tools must be used. Assuming that the wave power system hydrodynamics has a linear behaviour, diffraction and radiation coefficients can be computed. If the power take-off equipment may be, for the first approach, regarded as holding a linear behaviour then overall (i.e. hydrodynamic plus mechanical) device performance can be studied for r...
Mielite Transversa
Monteiro, T; Esperança, P; Baptista, I; Medeiros, L; Cândido, JOs autores apresentam três casos de mielite transversa de instalação aguda em doentes jovens, salientando a possível gravidade do quadro neurológico, a necessidade de excluir uma causa potencialmente tratável e a controvérsia da terapêutica com corticosteroides.
Transverse myelitis.
Monteiro, T C; Serviço de Medicina, Hospital de S. José, Lisboa.; Esperança, P; Baptista, I; Medeiros, L; Candido, JThe authors report three clinical cases of acute transverse myelitis in young patients with emphasis given to the seriousness of this kind of pathology, the need to exclude a potentially treatable cause and the controversial corticosteroid treatment. ; The authors report three clinical cases of acute transverse myelitis in young patients with emphasis given to the seriousness of this kind of pathology, the nee...
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