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Research paper thumbnail of Associação entre flexibilidade da cadeia muscular posterior e severidade de disfunção temporomandibular

Revista de Ciências Médicas e Biológicas, 2016

Introdução: a cabeça é um dos fatores determinantes da posição do corpo durante o desenvolvimento... more Introdução: a cabeça é um dos fatores determinantes da posição do corpo durante o desenvolvimento da postura humana, caracterizada pelo equilíbrio entre as estruturas de suporte, envolvendo mínimo esforço e sobrecarga com máxima eficiência. As disfunções temporomandibulares (DTM’s) são condições multifatoriais e, muitas vezes, estão relacionadas à má postura. A atividade alterada da musculatura mastigatória, comum nas DTM’s, interfere nos músculos de contra apoio, levando ao encurtamento dos músculos posteriores cervicais e consequente desequilíbrio postural do crânio. Objetivo: verificar a associação entre flexibilidade da cadeia posterior e severidade das DTM’s. Metodologia: trata-se de um estudo observacional, em corte transversal, em uma amostra não probabilística de universitários entre 18 e 50 anos. Após assinatura do TCLE, os voluntários responderam ao Questionário Anamnésico de Fonseca e, em seguida, foram submetidos ao teste de flexibilidade do Banco de Wells, com e sem cal...

Research paper thumbnail of Avaliação da resistência flexural de resinas compostas convencionais e do sistema bulkfill

Revista de Ciências Médicas e Biológicas, 2017

O constante aprimoramento dos materiais odontológicos é impulsionado pelas pesquisas científicas ... more O constante aprimoramento dos materiais odontológicos é impulsionado pelas pesquisas científicas que, por sua vez,são incentivadas pelo mercado consumidor que busca tratamentos estéticos e duráveis. Objetivo: Avaliar a resistência flexuralde duas resinas compostas convencionais e uma resina composta do sistema bulkfill. Metodologia: Foram utilizadas as resinas compostas: Z100TM (microhíbrida), FiltekTM Z350 XT (nanoparticulada) e a FiltekTM Bulk fill (sistema bulkfill). Foram confeccionados dez corpos de prova de cada compósito (25x2x2mm). Testes mecânicos para avaliação da resistência flexural foram realizados, os valores de força obtidos para fratura do corpo de prova foram, então, transformados em MPa.Resultados: o valor médio de resistência flexural médio encontrado para o grupo Z100TM=108,43MPa, para o grupo FiltekTM Bulk Fill=133,30MPa e para o grupo FiltekTM XT Z350=172,53MPa. Conclusões: A resina composta convencional denanoparticulaFiltekTM XT Z350 apresentou os maiores val...

Research paper thumbnail of SINTESIS ECOLOGICA: EFECTO DE LA GLUCOSA, pH Y TEMPERATURA EN EL TAMAÑO Y DISTRIBUCIÓN DE NANOPARTICULAS DE PLATA

Research paper thumbnail of Using Mobile Phone Data for Electricity Infrastructure Planning

Research paper thumbnail of Electrical network capacity support from demand side response: Techno-economic assessment of potential business cases for small commercial and residential end-users

Research paper thumbnail of Análise de sistemas de mesoescala utilizando dados de descargas nuvem-terra

Revista Brasileira de Geofísica, 2001

Research paper thumbnail of Domain-wall dynamics driven by short pulses along thin ferromagnetic strips: Micromagnetic simulations and analytical description

Research paper thumbnail of Discrete Lagrangian and Hamiltonian mechanics on Lie groupoids

Research paper thumbnail of Lagrangian submanifolds and dynamics on Lie algebroids

Journal of Physics A: Mathematical and General, 2005

Research paper thumbnail of Lie algebroid structures on a class of affine bundles

Journal of Mathematical Physics, 2002

Research paper thumbnail of A micromagnetic study of the oscillations of pinned domain walls in magnetic ribbons

Journal of Magnetism and Magnetic Materials, 2007

Research paper thumbnail of Lie algebroid structures and Lagrangian systems on affine bundles

Journal of Geometry and Physics, 2002

Research paper thumbnail of Micromagnetic study of spin-transfer driven ferromagnetic resonance: Equivalent circuit

Journal of Applied Physics, 2009

Micromagnetic computations are used to describe spin-transfer driven ferromagnetic resonance in a... more Micromagnetic computations are used to describe spin-transfer driven ferromagnetic resonance in a nanopillar spin-valve with elliptical cross section. Nonuniform magnetization resonance is found. With the aim of describing the resonance phenomena, an equivalent electrical circuit is proposed, and its electrical parameters are deduced from micromagnetic simulations. Comparisons of spin-torque nano-oscillators with conventional voltage-controlled oscillators are also provided.

Research paper thumbnail of A Survey of Lagrangian Mechanics and Control on Lie Algebroids and Groupoids

International Journal of Geometric Methods in Modern Physics, 2006

In this survey, we present a geometric description of Lagrangian and Hamiltonian Mechanics on Lie... more In this survey, we present a geometric description of Lagrangian and Hamiltonian Mechanics on Lie algebroids. The flexibility of the Lie algebroid formalism allows us to analyze systems subject to nonholonomic constraints, mechanical control systems, Discrete Mechanics and extensions to Classical Field Theory within a single framework. Various examples along the discussion illustrate the soundness of the approach.

Research paper thumbnail of Geometric Hamilton–Jacobi Theory for Nonholonomic Dynamical Systems

International Journal of Geometric Methods in Modern Physics, 2010

The geometric formulation of Hamilton–Jacobi theory for systems with nonholonomic constraints is ... more The geometric formulation of Hamilton–Jacobi theory for systems with nonholonomic constraints is developed, following the ideas of the authors in previous papers. The relation between the solutions of the Hamilton–Jacobi problem with the symplectic structure defined from the Lagrangian function and the constraints is studied. The concept of complete solutions and their relationship with constants of motion, are also studied in detail. Local expressions using quasivelocities are provided. As an example, the nonholonomic free particle is considered.

Research paper thumbnail of Geometric Hamilton–Jacobi Theory

International Journal of Geometric Methods in Modern Physics, 2006

The Hamilton–Jacobi problem is revisited bearing in mind the consequences arising from a possible... more The Hamilton–Jacobi problem is revisited bearing in mind the consequences arising from a possible bi-Hamiltonian structure. The problem is formulated on the tangent bundle for Lagrangian systems in order to avoid the bias of the existence of a natural symplectic structure on the cotangent bundle. First it is developed for systems described by regular Lagrangians and then extended to systems described by singular Lagrangians with no secondary constraints. We also consider the example of the free relativistic particle, the rigid body and the electron–monopole system.

Research paper thumbnail of Some Applications of Quasi-Velocities in Optimal Control

International Journal of Geometric Methods in Modern Physics, 2011

In this paper we study optimal control problems for nonholonomic systems defined on Lie algebroid... more In this paper we study optimal control problems for nonholonomic systems defined on Lie algebroids by using quasi-velocities. We consider both kinematic, i.e. systems whose cost functional depends only on position and velocities, and dynamic optimal control problems, i.e. systems whose cost functional depends also on accelerations. The formulation of the problem directly at the level of Lie algebroids turns out to be the correct framework to explain in detail similar results appeared recently [20]. We also provide several examples to illustrate our construction.

Research paper thumbnail of Relación entre incertidumbre e inversión en México, enfoque de opciones reales

Research paper thumbnail of Nonholonomic Lagrangian systems on Lie algebroids

Discrete & Continuous Dynamical Systems - A, 2009

Research paper thumbnail of Stochastic resonance of a domain wall in a stripe with two pinning sites

Applied Physics Letters, 2011

[Applied Physics Letters 98, 072507 (2011)]. Eduardo Martinez, Giovanni Finocchio, Mario Carpenti... more [Applied Physics Letters 98, 072507 (2011)]. Eduardo Martinez, Giovanni Finocchio, Mario Carpentieri. Abstract. ... Prog. Phys. 67, 45 (2004). W. Wernsdorfer, E. Bonet Orozco, K. Hasselbach, A. Benoit, B. Barbara, N. Demoncy, A. Loiseau, H. Pascard, and D. Mailly, Phys. Rev. Lett. ...

Research paper thumbnail of Associação entre flexibilidade da cadeia muscular posterior e severidade de disfunção temporomandibular

Revista de Ciências Médicas e Biológicas, 2016

Introdução: a cabeça é um dos fatores determinantes da posição do corpo durante o desenvolvimento... more Introdução: a cabeça é um dos fatores determinantes da posição do corpo durante o desenvolvimento da postura humana, caracterizada pelo equilíbrio entre as estruturas de suporte, envolvendo mínimo esforço e sobrecarga com máxima eficiência. As disfunções temporomandibulares (DTM’s) são condições multifatoriais e, muitas vezes, estão relacionadas à má postura. A atividade alterada da musculatura mastigatória, comum nas DTM’s, interfere nos músculos de contra apoio, levando ao encurtamento dos músculos posteriores cervicais e consequente desequilíbrio postural do crânio. Objetivo: verificar a associação entre flexibilidade da cadeia posterior e severidade das DTM’s. Metodologia: trata-se de um estudo observacional, em corte transversal, em uma amostra não probabilística de universitários entre 18 e 50 anos. Após assinatura do TCLE, os voluntários responderam ao Questionário Anamnésico de Fonseca e, em seguida, foram submetidos ao teste de flexibilidade do Banco de Wells, com e sem cal...

Research paper thumbnail of Avaliação da resistência flexural de resinas compostas convencionais e do sistema bulkfill

Revista de Ciências Médicas e Biológicas, 2017

O constante aprimoramento dos materiais odontológicos é impulsionado pelas pesquisas científicas ... more O constante aprimoramento dos materiais odontológicos é impulsionado pelas pesquisas científicas que, por sua vez,são incentivadas pelo mercado consumidor que busca tratamentos estéticos e duráveis. Objetivo: Avaliar a resistência flexuralde duas resinas compostas convencionais e uma resina composta do sistema bulkfill. Metodologia: Foram utilizadas as resinas compostas: Z100TM (microhíbrida), FiltekTM Z350 XT (nanoparticulada) e a FiltekTM Bulk fill (sistema bulkfill). Foram confeccionados dez corpos de prova de cada compósito (25x2x2mm). Testes mecânicos para avaliação da resistência flexural foram realizados, os valores de força obtidos para fratura do corpo de prova foram, então, transformados em MPa.Resultados: o valor médio de resistência flexural médio encontrado para o grupo Z100TM=108,43MPa, para o grupo FiltekTM Bulk Fill=133,30MPa e para o grupo FiltekTM XT Z350=172,53MPa. Conclusões: A resina composta convencional denanoparticulaFiltekTM XT Z350 apresentou os maiores val...

Research paper thumbnail of SINTESIS ECOLOGICA: EFECTO DE LA GLUCOSA, pH Y TEMPERATURA EN EL TAMAÑO Y DISTRIBUCIÓN DE NANOPARTICULAS DE PLATA

Research paper thumbnail of Using Mobile Phone Data for Electricity Infrastructure Planning

Research paper thumbnail of Electrical network capacity support from demand side response: Techno-economic assessment of potential business cases for small commercial and residential end-users

Research paper thumbnail of Análise de sistemas de mesoescala utilizando dados de descargas nuvem-terra

Revista Brasileira de Geofísica, 2001

Research paper thumbnail of Domain-wall dynamics driven by short pulses along thin ferromagnetic strips: Micromagnetic simulations and analytical description

Research paper thumbnail of Discrete Lagrangian and Hamiltonian mechanics on Lie groupoids

Research paper thumbnail of Lagrangian submanifolds and dynamics on Lie algebroids

Journal of Physics A: Mathematical and General, 2005

Research paper thumbnail of Lie algebroid structures on a class of affine bundles

Journal of Mathematical Physics, 2002

Research paper thumbnail of A micromagnetic study of the oscillations of pinned domain walls in magnetic ribbons

Journal of Magnetism and Magnetic Materials, 2007

Research paper thumbnail of Lie algebroid structures and Lagrangian systems on affine bundles

Journal of Geometry and Physics, 2002

Research paper thumbnail of Micromagnetic study of spin-transfer driven ferromagnetic resonance: Equivalent circuit

Journal of Applied Physics, 2009

Micromagnetic computations are used to describe spin-transfer driven ferromagnetic resonance in a... more Micromagnetic computations are used to describe spin-transfer driven ferromagnetic resonance in a nanopillar spin-valve with elliptical cross section. Nonuniform magnetization resonance is found. With the aim of describing the resonance phenomena, an equivalent electrical circuit is proposed, and its electrical parameters are deduced from micromagnetic simulations. Comparisons of spin-torque nano-oscillators with conventional voltage-controlled oscillators are also provided.

Research paper thumbnail of A Survey of Lagrangian Mechanics and Control on Lie Algebroids and Groupoids

International Journal of Geometric Methods in Modern Physics, 2006

In this survey, we present a geometric description of Lagrangian and Hamiltonian Mechanics on Lie... more In this survey, we present a geometric description of Lagrangian and Hamiltonian Mechanics on Lie algebroids. The flexibility of the Lie algebroid formalism allows us to analyze systems subject to nonholonomic constraints, mechanical control systems, Discrete Mechanics and extensions to Classical Field Theory within a single framework. Various examples along the discussion illustrate the soundness of the approach.

Research paper thumbnail of Geometric Hamilton–Jacobi Theory for Nonholonomic Dynamical Systems

International Journal of Geometric Methods in Modern Physics, 2010

The geometric formulation of Hamilton–Jacobi theory for systems with nonholonomic constraints is ... more The geometric formulation of Hamilton–Jacobi theory for systems with nonholonomic constraints is developed, following the ideas of the authors in previous papers. The relation between the solutions of the Hamilton–Jacobi problem with the symplectic structure defined from the Lagrangian function and the constraints is studied. The concept of complete solutions and their relationship with constants of motion, are also studied in detail. Local expressions using quasivelocities are provided. As an example, the nonholonomic free particle is considered.

Research paper thumbnail of Geometric Hamilton–Jacobi Theory

International Journal of Geometric Methods in Modern Physics, 2006

The Hamilton–Jacobi problem is revisited bearing in mind the consequences arising from a possible... more The Hamilton–Jacobi problem is revisited bearing in mind the consequences arising from a possible bi-Hamiltonian structure. The problem is formulated on the tangent bundle for Lagrangian systems in order to avoid the bias of the existence of a natural symplectic structure on the cotangent bundle. First it is developed for systems described by regular Lagrangians and then extended to systems described by singular Lagrangians with no secondary constraints. We also consider the example of the free relativistic particle, the rigid body and the electron–monopole system.

Research paper thumbnail of Some Applications of Quasi-Velocities in Optimal Control

International Journal of Geometric Methods in Modern Physics, 2011

In this paper we study optimal control problems for nonholonomic systems defined on Lie algebroid... more In this paper we study optimal control problems for nonholonomic systems defined on Lie algebroids by using quasi-velocities. We consider both kinematic, i.e. systems whose cost functional depends only on position and velocities, and dynamic optimal control problems, i.e. systems whose cost functional depends also on accelerations. The formulation of the problem directly at the level of Lie algebroids turns out to be the correct framework to explain in detail similar results appeared recently [20]. We also provide several examples to illustrate our construction.

Research paper thumbnail of Relación entre incertidumbre e inversión en México, enfoque de opciones reales

Research paper thumbnail of Nonholonomic Lagrangian systems on Lie algebroids

Discrete & Continuous Dynamical Systems - A, 2009

Research paper thumbnail of Stochastic resonance of a domain wall in a stripe with two pinning sites

Applied Physics Letters, 2011

[Applied Physics Letters 98, 072507 (2011)]. Eduardo Martinez, Giovanni Finocchio, Mario Carpenti... more [Applied Physics Letters 98, 072507 (2011)]. Eduardo Martinez, Giovanni Finocchio, Mario Carpentieri. Abstract. ... Prog. Phys. 67, 45 (2004). W. Wernsdorfer, E. Bonet Orozco, K. Hasselbach, A. Benoit, B. Barbara, N. Demoncy, A. Loiseau, H. Pascard, and D. Mailly, Phys. Rev. Lett. ...