26 documents found, page 1 of 3
The silent extinction of freshwater mussels in Portugal
Lopes-Lima, M.; Reis, J.; Alvarez, Maria G.; Anastácio, P. M.; Banha, F.; Beja, P.; Castro, P.; Gama, Mafalda; Gil, M. G.; Gomes-dos-Santos, A.Freshwater mussels are one of the most threatened animal groups in the world. In the European Union, threatened and protected mussel species are not adequately monitored, while species considered to be common and widespread receive even less attention. This is particularly worrying in the Mediterranean region, where species endemism is high and freshwater habitats are severely affected by water scarcity. In the...
Lattice microstructure design for cathode electrodes for high-performance lithi...
Miranda, D.; Gonçalves, R.; Veloso, F.; Miranda, F.; Vilaça, J.; Costa, C. M.; Lanceros-Méndez, S.The electrode geometry is an essential parameter affecting the cycling performance of batteries. In this work, the effect of lattice geometry of the cathode electrode on battery performance was studied by theoretical simulations keeping its volume constant. It was observed that the variation of the lattice geometry improves the cycling performance when compared to conventional planar geometry. The improvement o...
Structural mechanical simulation to optimize the sensor arm geometry to be impl...
Veloso, F.; Miranda, D.; Morais, Pedro; Torres, Helena R.; Laranjeira, Roberto; Ruediger, Mário; Miranda, F.; Pinho, António C.M.; Vilaça, J.L.For the treatment of moderate and severe cases of deformational plagiocephaly, an asymmetrical deformation of the skull, a cranial remodeling orthosis (CRO) is used. For the development of a new CRO concept, a pressure sensor grid is placed inside the orthosis that will allow the monitoring of excessive pressures and incorrect CRO positioning throughout the treatment. To implement the sensor grid in the CRO, hi...
Lattice microstructure design for cathode electrodes for high-performance lithi...
Miranda, D.; Gonçalves, R.; Veloso, F.; Miranda, F.; Vilaça, J.; Costa, C. M.; Lanceros-Méndez, S.The electrode geometry is an essential parameter affecting the cycling performance of batteries. In this work, the effect of lattice geometry of the cathode electrode on battery performance was studied by theoretical simulations keeping its volume constant. It was observed that the variation of the lattice geometry improves the cycling performance when compared to conventional planar geometry. The improvement o...
Time travelling through local ecological knowledge regarding an endangered species
Sousa, Ronaldo Gomes; Nogueira, J. G.; Miranda, F.; Teixeira, A.European freshwater pearl mussel (Margaritifera margaritifera) populations are declining despite a growing effort to conserve them. Here we used a combination of local ecological knowledge (LEK) and field sampling to assess past and current distribution and conservation status of this endangered species in Cávado and Neiva Rivers (Portugal). We performed face-to-face interviews in both rivers and sampled the en...
Theoretical simulation of different 3D separator geometries for lithium-ion bat...
Miranda, D.; Gonçalves, Renato Ferreira; Miranda, F.; Almeida, A. M.; Costa, Carlos Miguel Silva; Lanceros-Méndez, S.The battery separator is an essential component of batteries and affects their cycling performance. In this work, the effect of different 3D geometries of the battery separator on battery performance was studied keeping the same volume. It was observed that the different geometries affect the cycling performance, the best geometry being the perforated one that cycled up to 90 C. The cycling performance is affec...
Cone geometry optimization and thermal behavior for lithium-ion battery separators
Miranda, D.; Gonçalves, Renato Ferreira; Miranda, F.; Vilhena, E.; Lanceros-Méndez, S.; Costa, Carlos Miguel SilvaA 3D cone separator geometry for lithium-ion batteries has been optimized taking into account the increase of radius size of one side. Theoretical simulations have been carried out for evaluating the influence of radius size in the cone structure at different discharge rates (1 C and 60 C) in which it was also determined the produced ohmic heat. The value of the discharge capacity in the cone structure depends ...
Setting the stage for new ecological indicator species: A holistic case study o...
Lopes-Lima, M.; Hinzmann, M.; Varandas, S.; Froufe, E.; Reis, J.; Moreira, C.; Araújo, S.; Miranda, F.; Gonçalves, D.; Beja, P.; Sousa, Ronaldo GomesDue to their sensitivity and dramatic declines, freshwater mussels are prime targets for conservation and environmental monitoring. For this, however, information is needed on life history and ecological traits, which is lacking in many taxa, including threatened species. Species recently described or recognized as valid are of particular concern, due to the shortage of even basic knowledge. A case in point is ...
Theoretical simulation of different 3D separator geometries for lithium-ion bat...
Miranda, D.; Gonçalves, R.; Miranda, F.; Almeida, A. M.; Costa, C. M.; Lanceros-Méndez, S.The battery separator is an essential component of batteries and affects their cycling performance. In this work, the effect of different 3D geometries of the battery separator on battery performance was studied keeping the same volume. It was observed that the different geometries affect the cycling performance, the best geometry being the perforated one that cycled up to 90 C. The cycling performance is affec...
Cone geometry optimization and thermal behavior for lithium-ion battery separators
Miranda, D.; Gonçalves, R.; Miranda, F.; Vilhena, E.; Lanceros-Méndez, S.; Costa, C. M.A 3D cone separator geometry for lithium-ion batteries has been optimized taking into account the increase of radius size of one side. Theoretical simulations have been carried out for evaluating the influence of radius size in the cone structure at different discharge rates (1 C and 60 C) in which it was also determined the produced ohmic heat. The value of the discharge capacity in the cone structure depends ...