17 documents found, page 1 of 2
Fly-pt project: collaborative approaches in e-vtol passenger cabin design
Marcelino, José Rui; Castro, André; Ferreira, CatarinaThe increase in urbanization and road congestion has raised the need to address new solutions for transportation. In this context Urban Air Mobility (UAM) has come up as a possible near future solution, supported by the advance of sustainable propulsion, energy storage systems, connectivity, automation, and lightweight structures. The FLY.PT project, integrating different Portuguese companies in the aviation se...
Innovative design strategies for sustainable coral reef restoration in the anth...
Dias, J. Pedro; Castro, André; Félix, Maria JoãoClimate change poses a threat to coral ecosystems, demanding urgent restoration efforts. Artificial reefs (AR) are a fundamental tool to manipulate and stabilize the seabed substrate, although their effectiveness can be improved through design considerations. This review aims to provide an overview of the coral restoration methods and challenges, providing design strategies for coral reef restoration. AR consis...
Designing tomorrow's coral reefs: 3dcp potential in innovative artificial coral...
Dias, J. Pedro; Brandão, Filipe Jorge Silva; Castro, André; Félix, Maria JoãoThe reef's substrate stability and intricacy are directly related to the ecosystem's longevity. Reefs affected by extreme weather events face the problem of unconsolidated substrates, resulting in fractured coral branches, that present an obstacle to natural recovery hindering coral attachment and settlement. The natural substrate stabilization process can take up to 10 years to develop functional ecosystems wi...
Comparação entre os sistemas de informação adquiridos e os desenvolvidos na For...
Castro, AndréOs Sistemas de Informação (SI) que a Força Aérea (FA) explora são maioritariamente desenvolvidos internamente mas, com a redução cada vez maior do Orçamento para a Defesa, é fundamental um maior rigor na gestão de recursos e o aproveitamento de sinergias com o mundo civil, particularmente na área das Tecnologias de Informação (TI). A decisão de optar por SI comerciais é muitas vezes determinada por aspetos como...
Biomechanical behaviour of cancellous bone on patellofemoral arthroplasty with ...
Castro, André; Completo, António; Simões, José A.; Flores, PauloIsolated patellofemoral (PF) arthritis of the knee is a common cause of anterior knee pain and disability. Patellofemoral arthroplasty (PFA) is a bone conserving solution for patients with PF degeneration. Failure mechanisms of PFA include growing tibiofemoral arthritis and loosening of components. The implant loosening can be associated with bone resorption, or fatigue-failure of bone by overload. This researc...
Long-term creep behavior of the intervertebral disk: comparison between bioreac...
Castro, André; Paul, C. P. L.; Detiger, S. E. L.; Smit, T. H.; Royen, B. J. van; Claro, José Carlos Pimenta; Mullender, M. G.; Alves, J. L.The loaded disk culture system is an intervertebral disk (IVD)-oriented bioreactor developed by the VU Medical Center (VUmc, Amsterdam, The Netherlands), which has the capacity of maintaining up to 12 IVDs in culture, for approximately 3 weeks after extraction. Using this system, eight goat IVDs were provided with the essential nutrients and submitted to compression tests without losing their biomechanical and ...
Influence of the electrotonic architecture on single neurons dynamics : a compu...
Castro, AndréNa presente dissertação, investigamos de forma sistemática a forma como a morfologia dendrítica subjaz as diferenças na atividade elétrica neuronal que estão na base da geração de potenciais de ação. De forma a atingir este objetivo desenvolvemos uma medida que quantifica as duas maiores fontes de variabilidade morfológica: métrica e topologia, e ainda outros componentes estruturais como canais iónicos. Baseado...
Development of a biomimetic finite element model of the intervertebral disc dis...
Castro, AndréDegenerative Disc Disease is one of the largest health problems faced worldwide, based on lost working time and associated costs. This is the driving force for the development of a biomimetic Finite Element (FE) model of the Intervertebral Disc (IVD), which is a multiphasic and highly inhomogeneous structure. A great amount of experimental and numerical works have studied the IVD and proven that it presents osm...
The role of poroelasticity on the biomechanics of the intervertebral disc : a f...
Castro, André; Flores, Paulo; Completo, António; Alves, J. L.The major goal for the present work is to evaluate a biomimetic Finite Element (FE) model of the Intervertebral Disc (IVD). Recent studies have emphasized the importance of an accurate biomechanical modeling of the IVD, which is a highly complex biphasic medium. A novel biphasic poroelastic model was implemented and coupled with Wilson’s model (2005) for biphasic osmotic swelling behavior. Numerical tests were ...
Biomechanical behavior of cancellous bone on patellofemoral arthroplasty with J...
Castro, André; Completo, António; Simões, José A.; Flores, PauloIsolated patellofemoral (PF) arthritis of the knee affects approximately 10% of the population in general. Patellofemoral arthroplasty (PFA) is a bone conserving solution for patients with isolated PF degeneration. Typical failure mechanisms of PFA include growing tibiofemoral arthritis or loosening of components. The implant loosening can be related to bone resorption, or fatigue-failure of bone by overload. T...