Pedro Bernal | Universidad Nacional de Colombia (National University of Colombia) (original) (raw)

Pedro Bernal

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Papers by Pedro Bernal

Research paper thumbnail of Generalização Fractal De Célula Pré-Neoplásicas e Cancer Do Epitélio Escamoso Cervical

Revista Med, Dec 1, 2010

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Research paper thumbnail of Diagnóstico cardiaco basado en la probabilidad aplicado a pacientes con marcapasos

Acta Medica Colombiana, Jan 28, 2013

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Research paper thumbnail of Diagnóstico fractal de disfunción cardéaca severa: Dinámica fractal de la ramificación coronaria izquierda

Revista Colombiana De Cardiologia, Oct 1, 2012

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Research paper thumbnail of TEORIA DE CONJUNTOS APLICADA A POPULAÇÕES DE LEUCÓCITOS, LINFÓCITOS Y CD4 DE PACIENTES COM HIV: Predição de linfócitos T CD4, de aplicação clínica

Revista Med, Dec 1, 2011

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Research paper thumbnail of Fractal diagnosis of severe cardiac dysfunction: Fractal dynamic of the left coronary branching

Revista Colombiana De Cardiologia, Oct 1, 2012

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Research paper thumbnail of Nueva Metodología De Ayuda Diagnóstica De La Dinámica Geométrica Cardiaca Dinámica Cardiaca Caótica Del Holter

Revista De La Academia Colombiana De Ciencias Exactas Fisicas Y Naturales, Mar 1, 2011

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Research paper thumbnail of Variabilidad de la dimensión fractal de la ramificación coronaria izquierda en ausencia y presencia de enfermedad arterial oclusiva moderada y severa

Revista Colombiana De Cardiologia, Jun 1, 2007

página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. Texto completo. experimental, ... more página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. Texto completo. experimental, Documentos relacionados. Id: 469036. Autor: Rodríguez, Javier; Prieto, Signed; Ortiz, Liliana; Correa, Catalina; Álvarez T., Luisa; Bernal, Pedro; Casadiego, Elkin. ...

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Research paper thumbnail of Predicciones de la entropía proporcional en la Dinámica Cardíaca

Revista Med, 2015

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Research paper thumbnail of Dynamics of the Dengue Epidemic in Colombia: Predictions of the Epidemic Trajectory

Revista Med, Jun 1, 2013

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Research paper thumbnail of Nueva metodología física y matemática de evaluación del Holter New physics and mathematics methodology in Holter evaluation

Revista Colombiana De Cardiologia, Apr 1, 2008

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Research paper thumbnail of Confirmação Do Método De Ajuda Diagnóstica Da Dinâmica Cardíaca De Aplicação Clínica Desenvolvido Com Base Na Teoria Da Probabilidade

Revista Med, Dec 1, 2011

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Research paper thumbnail of Caracterización matemática de la enfermedad de Legg-Calvé-Perthes mediante geometría fractal

Revista Cubana De Ortopedia Y Traumatologia, Jun 1, 2014

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Research paper thumbnail of Dinâmica Da Epidemia Da Dengue Na Colômbia: Predições Da Trajetória Da Epidemia

Revista Med, Jun 1, 2013

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Research paper thumbnail of Caracterización física y matemática de péptidos de alta unión de EBA-181 mediante la aplicación de la teoría de la probabilidad y la entropía

Revista De La Academia Colombiana De Ciencias Exactas Fisicas Y Naturales, 2012

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Research paper thumbnail of Dinámica de la epidemia del dengue en Colombia: predicciones de la trayectoria de la epidemia

Revista Med, 2013

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Research paper thumbnail of Caracterización de Péptidos de Alta Unión de la Proteína AMA-1 Mediante la Probabilidad y la Entropía

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Research paper thumbnail of Zipf-Mandelbrot law and mathematical approach in fetal cardiac monitoring diagnosis

Revista de la Facultad de Medicina, Universidad Nacional de Colombia

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Research paper thumbnail of Variability in fractal dimension of left coronary artery ramification during absence and presence of moderate and severe occlusive arterial disease

Revista Colombiana de Cardiologia

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Research paper thumbnail of Cardiac diagnosis based on probability applied to patients with pacemakers

Acta médica colombiana: AMC: organo de la Asociación Columbiana de Medicina Interna

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Research paper thumbnail of New physics and mathematics methodology in Holter evaluation

Revista Colombiana de Cardiologia

The characterization of state and evolution of systems are described by the theory of dynamic sys... more The characterization of state and evolution of systems are described by the theory of dynamic systems. Chaotic systems may be evaluated through fractal dimensions. 17 Holter were studied, four of which were diagnosed as normal and 13 with different diseases. A sequence of values of heart rate was generated from the values obtained in the clinical examination. For each simulation, an attractor was built; its fractal dimension was evaluated as well as the spaces occupied by the attractor, and finally comparisons between normality and disease, were made. Acute chaotic cardiac dynamics were differentiated from chronic and normal with measure parameters related with fractal dimension. Maximal values in spatial occupation of attractors associated to acute clinical events were found by the application of the Box Counting method. The spaces evaluated for the attractors of individuals with acute clinical events are a third of the normal ones. According to this methodology, the totality of ca...

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Research paper thumbnail of Generalização Fractal De Célula Pré-Neoplásicas e Cancer Do Epitélio Escamoso Cervical

Revista Med, Dec 1, 2010

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Research paper thumbnail of Diagnóstico cardiaco basado en la probabilidad aplicado a pacientes con marcapasos

Acta Medica Colombiana, Jan 28, 2013

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Research paper thumbnail of Diagnóstico fractal de disfunción cardéaca severa: Dinámica fractal de la ramificación coronaria izquierda

Revista Colombiana De Cardiologia, Oct 1, 2012

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Research paper thumbnail of TEORIA DE CONJUNTOS APLICADA A POPULAÇÕES DE LEUCÓCITOS, LINFÓCITOS Y CD4 DE PACIENTES COM HIV: Predição de linfócitos T CD4, de aplicação clínica

Revista Med, Dec 1, 2011

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Research paper thumbnail of Fractal diagnosis of severe cardiac dysfunction: Fractal dynamic of the left coronary branching

Revista Colombiana De Cardiologia, Oct 1, 2012

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Research paper thumbnail of Nueva Metodología De Ayuda Diagnóstica De La Dinámica Geométrica Cardiaca Dinámica Cardiaca Caótica Del Holter

Revista De La Academia Colombiana De Ciencias Exactas Fisicas Y Naturales, Mar 1, 2011

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Research paper thumbnail of Variabilidad de la dimensión fractal de la ramificación coronaria izquierda en ausencia y presencia de enfermedad arterial oclusiva moderada y severa

Revista Colombiana De Cardiologia, Jun 1, 2007

página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. Texto completo. experimental, ... more página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. Texto completo. experimental, Documentos relacionados. Id: 469036. Autor: Rodríguez, Javier; Prieto, Signed; Ortiz, Liliana; Correa, Catalina; Álvarez T., Luisa; Bernal, Pedro; Casadiego, Elkin. ...

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Research paper thumbnail of Predicciones de la entropía proporcional en la Dinámica Cardíaca

Revista Med, 2015

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Research paper thumbnail of Dynamics of the Dengue Epidemic in Colombia: Predictions of the Epidemic Trajectory

Revista Med, Jun 1, 2013

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Research paper thumbnail of Nueva metodología física y matemática de evaluación del Holter New physics and mathematics methodology in Holter evaluation

Revista Colombiana De Cardiologia, Apr 1, 2008

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Research paper thumbnail of Confirmação Do Método De Ajuda Diagnóstica Da Dinâmica Cardíaca De Aplicação Clínica Desenvolvido Com Base Na Teoria Da Probabilidade

Revista Med, Dec 1, 2011

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Research paper thumbnail of Caracterización matemática de la enfermedad de Legg-Calvé-Perthes mediante geometría fractal

Revista Cubana De Ortopedia Y Traumatologia, Jun 1, 2014

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Research paper thumbnail of Dinâmica Da Epidemia Da Dengue Na Colômbia: Predições Da Trajetória Da Epidemia

Revista Med, Jun 1, 2013

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Research paper thumbnail of Caracterización física y matemática de péptidos de alta unión de EBA-181 mediante la aplicación de la teoría de la probabilidad y la entropía

Revista De La Academia Colombiana De Ciencias Exactas Fisicas Y Naturales, 2012

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Research paper thumbnail of Dinámica de la epidemia del dengue en Colombia: predicciones de la trayectoria de la epidemia

Revista Med, 2013

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Research paper thumbnail of Caracterización de Péptidos de Alta Unión de la Proteína AMA-1 Mediante la Probabilidad y la Entropía

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Zipf-Mandelbrot law and mathematical approach in fetal cardiac monitoring diagnosis

Revista de la Facultad de Medicina, Universidad Nacional de Colombia

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Variability in fractal dimension of left coronary artery ramification during absence and presence of moderate and severe occlusive arterial disease

Revista Colombiana de Cardiologia

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Cardiac diagnosis based on probability applied to patients with pacemakers

Acta médica colombiana: AMC: organo de la Asociación Columbiana de Medicina Interna

Bookmarks Related papers MentionsView impact

Research paper thumbnail of New physics and mathematics methodology in Holter evaluation

Revista Colombiana de Cardiologia

The characterization of state and evolution of systems are described by the theory of dynamic sys... more The characterization of state and evolution of systems are described by the theory of dynamic systems. Chaotic systems may be evaluated through fractal dimensions. 17 Holter were studied, four of which were diagnosed as normal and 13 with different diseases. A sequence of values of heart rate was generated from the values obtained in the clinical examination. For each simulation, an attractor was built; its fractal dimension was evaluated as well as the spaces occupied by the attractor, and finally comparisons between normality and disease, were made. Acute chaotic cardiac dynamics were differentiated from chronic and normal with measure parameters related with fractal dimension. Maximal values in spatial occupation of attractors associated to acute clinical events were found by the application of the Box Counting method. The spaces evaluated for the attractors of individuals with acute clinical events are a third of the normal ones. According to this methodology, the totality of ca...

Bookmarks Related papers MentionsView impact

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