A5077423902- Theoretical and Computational Physics
- Numerical methods in engineering
- Rock Mechanics and Modeling
- Composite Material Mechanics
- Stochastic processes and statistical mechanics
- Elasticity and Material Modeling
- Quantum many-body systems
- Bone Tissue Engineering Materials
- Cellular Mechanics and Interactions
- Dental materials and restorations
- 3D Printing in Biomedical Research
- Bone health and osteoporosis research
- Physics of Superconductivity and Magnetism
- Fluid Dynamics Simulations and Interactions
- Cardiac Valve Diseases and Treatments
- Dental Implant Techniques and Outcomes
- Cardiac, Anesthesia and Surgical Outcomes
- Orthopedic Infections and Treatments
- Additive Manufacturing and 3D Printing Technologies
- Dental Radiography and Imaging
- Spectroscopy Techniques in Biomedical and Chemical Research
- Innovations in Concrete and Construction Materials
- Digital Imaging for Blood Diseases
- Total Knee Arthroplasty Outcomes
- Opinion Dynamics and Social Influence
Institute of Mechanical Engineering and Industrial Mangement
2013-2023
Universidade do Porto
2002-2023
Hospital de Santa Cruz
2009-2023
Dentsply Sirona (Sweden)
2023
National Institute of Arthritis and Musculoskeletal and Skin Diseases
2022
National Institutes of Health
2022
National Institute of Statistics and Geography
2019
Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial
2016
Universidade Católica Portuguesa
2016
Hospital da Luz
2015
At a continuous transition into non-unique absorbing state, particle systems may exhibit non-universal critical behaviour, in apparent violation of hyperscaling. We propose generalized scaling theory for dynamic behaviour at to an which is capable describing exponents vary according the initial configuration. The resulting hyperscaling relation supported by simulations two lattice models.
A busca por soluções sustentáveis na engenharia civil tem incentivado o uso de materiais construção com menor impacto ambiental, como os tijolos solo-cimento (TSC), alternativos que não passam processo calcinação, construções terra-crua e tijolo-cimento caracterizam-se ocasionarem menores impactos ambientais, além serem uma alternativa baixo custo. No estado do Pará/Brasil, região lago da UHE Tucuruí, famílias residentes em ilhas têm dificuldade para transportar TSC constituem opção técnica...
This work describes a system developed for fall detection, based on wearable sensor unit, mobile application and website. The device is small printed circuit board that includes an inertial Bluetooth Low Energy (BLE) module microprocessor, protected by plastic case designed with ergonomics aesthetics in mind. continually analyses the elderly's movement orientation to detect fall. In it happens, communicates via personal smartphone sends alert caregivers or family members configured...
We investigated the phase transition behavior of a binary spreading process in two dimensions for different particle diffusion strengths (D). found that N>2 cluster mean-field approximations must be considered to get consistent singular behavior. The N=3,4 result continuous belonging single universality class along D subset (0,1) line. Large scale simulations density confirmed scaling with logarithmic corrections. This is interpreted as numerical evidence supporting bosonic field theoretical...
Objectives: Commercial photocurable polymers used in dental additive manufacturing still have mechanical limitations. The incorporation of graphene may provide interesting advantages this field. This study aimed to evaluate vitro the effect adding nanoparticles a 3D-printed polymethylmethacrylate resin terms surface roughness, flexural properties, and hardness. Methods: A (Dental Sand, Harz Lab) was loaded with four different nanoplatelet (Graphenest) concentrations: 0.01wt%, 0.1wt%,...
The main goal of the present study is to analyze and characterize behavior middle ear, when a total ossicular replacement prosthesis (TORP) used in chain, order troubleshoot conductive hearing loss. Using finite element model (FEM), dynamic ear was made. displacement values were obtained at umbo stapes footplate, for sound pressure level 80 dB (SPL) applied tympanic membrane, cartilage membrane-prosthesis interface different diameters thicknesses used. results compared with healthy model....
We have investigated the effect of initial condition on spreading exponents one-dimensional pair contact process (PCP) and threshold transfer process. The nonorder field was found to exhibit critical fluctuations, relaxing its natural value with same power law as order parameter field. argue that this slow relaxation, which not taken into account in earlier studies these models, is responsible for continuously changing survival probability exponent. High-precision numerical simulations show...
The mean-field renormalisation group method is used to study the critical temperature of three-state Potts antiferromagnet in 3D lattices, as well model on square lattice with ferromagnetic (along x) and antiferromagnetic y) interactions, its quantum version, 1D a transverse field. Comparison made other results.
This work has the objective to compare mechanical behaviour of a brain impact using an alternative numerical meshless technique. Thus, discrete geometrical model was constructed medical images. technique allows achieve discretization with realistic geometry, allowing define locally properties according images colour scale. After defining brain, essential and natural boundary conditions were imposed reproduce sudden force. The analysis performed finite element radial point interpolation...
The form of the Landau-Ginsburg effective Hamiltonian is derived for a spin-phonon coupled system. For TD not=0 it found that both quadratic and quartic terms reduce to those an Ising model with non-analytic J(q). A crossover calculation (to order epsilon ) performed evaluate way in which susceptibility exponent gamma will vary t as drive system away from gaussian fixed point.
This work aims to present a global view of additive manufacturing, focused in biomedical area. With the evolution technology, there has been an increasing demand for customized products, which intensified need alternative manufacturing techniques. Additive (AM) consists development physical models through deposition layer-by-layer material from three-dimensional virtual models. About three decades ago, Fusion Deposition Modeling (FDM) technology was developed. FDM is AM extrusion used...
Bone is a complex hierarchical material that can be characterized from the microscale to macroscale. This work demonstrates application of an enhanced homogenization methodology multiscale structural analysis femoral bone. The use this technique allows remove subjectivity and reduce computational cost associated with iterative process creating heterogeneous mesh. Thus, it create simpler homogenized meshes its mechanical properties defined using information directly mesh source: medical...
The Hamiltonian used to describe Jahn-Teller compounds like DyVO4, TbVO4, TmVO4, TbAsO4, etc., has a non-analytic term arising from the coupling of lattice displacements pseudo-spins. One explicitly calculates angular dependence this term, for both types distortion involved. values elastic constants are obtain numerical quantities that prove relevant study associated crossover effects. A simple approximation form interaction is used; effective exponent gamma eff then evaluated as function...
The aim of this work is the development a novel framework for structural optimization using bio-inspired remodelling algorithm adapted to additive manufacturing. fact that polylactic acid (PLA, E = 3145 MPa (Young’s modulus) according supplier parts obtained by injection) shows similar parameterized behavior with ductile metals, in sense both materials are characterized bi-linear elastic-plastic law, allows simulate and prototype be further constructed metals at lower cost then produced more...
O artigo trata-se de um resultado uma busca dados sobre a discriminação que idosos negros sofrem no ambiente hospitalar, houve certa escassez esse assunto é suma importância. Foi notado devido aos estereótipos pessoas pretas são mais “fortes” há grande falha atendimento dessas pessoas, podendo resultar em diagnósticos apressados e muitas das vezes errados principalmente casos doenças crônicas, também incompreensão cultural crenças podem dificultar o tratamento causar problemas à saúde mental...
An isotropic compressible Ising model is considered where, besides the coupling of spins to acoustic modes lattice, optic also assumed exist. It shown that, under constant volume and pinned boundary conditions, for T very near T,, critical behaviour not changed, as compared situation where only phonons considered; system shows Fisher-renormalised exponents. However, size region this observed depends on phonons, does phonon correlation function. The first- order transition occur free-boundary...
The rare skeletal disorder, acromesomelic dwarfism, is characterized by short stature and limbs. Bone dysplasia evident. We report two cases of a variation this disorder in Portuguese woman her son. clinical features these differ from those previously reported the literature.