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Ara es mostren els items 1-20 de 44

    • A General Equilibrium Model to Study Intracellular Calcium Homeostasis. New Insights on Ventricular Function 

      Álvarez Lacalle, Enrique; Conesa Ortega, David; Echebarría Domínguez, Blas; Shiferaw, Yohannes; Peñaranda Ayllón, Angelina; Rodríguez Cantalapiedra, Inma (2018)
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    • Acoustic evaluation of modular greenery noise barriers 

      Lacasta Palacio, Ana María; Peñaranda Ayllón, Angelina; Rodríguez Cantalapiedra, Inma; Auguet Sangrá, Carlota E.; Bures, S.; Urrestarazu, M. (2016-12-01)
      Article
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      Green noise barriers have become an alternative means of reducing urban traffic noise. In this paper, the acoustic performance of a modular greenery noise barrier is evaluated. In situ measurements of noise reflection were ...

    • Are SR Ca content fluctuations or SR refractoriness the key to atrial cardiac alternans?: insights from a human atrial model 

      Lugo Vélez, Carlos Antonio; Rodríguez Cantalapiedra, Inma; Peñaranda Ayllón, Angelina; Hove-Madsen, Leif; Echebarría Domínguez, Blas (2014-06-01)
      Article
      Accés restringit per política de l'editorial
      Despite the important role of electromechanical alternans in cardiac arrhythmogenesis, its molecular origin is not well understood. The appearance of calcium alternans has often been associated to fluctuations in the ...

    • Calcium alternans is a global order-disorder phase transition. Robustness on Ryanodine Receptor release dynamics 

      Álvarez Lacalle, Enrique; Peñaranda Ayllón, Angelina; Rodríguez Cantalapiedra, Inma; Shiferaw, Yohannes; Echebarría Domínguez, Blas (2015)
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      Electromechanical alternans is a beat-to-beat alterna- tion in the strength of contraction of a cardiac cell which appears often due to an instability of calcium cycling. The global calcium signal in cardiomyocytes is ...

    • Calcium alternans is a global order-disorder phase transition: robustness on ryanodine receptor release dynamics 

      Álvarez Lacalle, Enrique; Peñaranda Ayllón, Angelina; Rodríguez Cantalapiedra, Inma; Shiferaw, Yohannes; Echebarría Domínguez, Blas (2016-01-01)
      Article
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      Electromechanical alternans is a beat-to-beat alterna- tion in the strength of contraction of a cardiac cell which appears often due to an instability of calcium cycling. The global calcium signal in cardiomyocytes is ...

    • Calcium alternans produced by increased sarcoplasmic reticulum refractoriness 

      Rodríguez Cantalapiedra, Inma; Lugo Vélez, Carlos Antonio; Peñaranda Ayllón, Angelina; Echebarría Domínguez, Blas (2011-09-29)
      Article
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      Despite the important role of electro-mechanical alternans in cardiac arrhythmogenesis, its molecular origin is not well understood. In this paper we want to study alternans that can be associated with alternations in the ...

    • Calcium alternans produced by increased sarcoplasmic reticulum refractoriness 

      Rodríguez Cantalapiedra, Inma; Lugo, Carlos; Peñaranda Ayllón, Angelina; Echebarría Domínguez, Blas (IEEE Computer Society Publications, 2011)
      Text en actes de congrés
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      Despite the important role of electro-mechanical alternans in cardiac arrhythmogenesis, its molecular origin is not well understood. In this paper we want to study alternans that can be associated with alternations in ...

    • Cardiac dynamics: modeling the Brugada syndrome 

      Rodríguez Cantalapiedra, Inma; Echebarría Domínguez, Blas; Peñaranda Ayllón, Angelina (2007)
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      Este trabajo analiza mediante un modelo matemático reducido de corrientes ionicas la posibilidad de aparición de arritmias cardiacas.

    • Conductance heterogeneities induced by multistability in the dynamics of coupled cardiac gap junctions 

      Bragard, Jean; Witt, Annette; Laroze, David; Hawks, Claudia; Elorza Barbajero, Jorge; Rodríguez Cantalapiedra, Inma; Peñaranda Ayllón, Angelina; Echebarría Domínguez, Blas (2021-07-01)
      Article
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      In this paper, we study the propagation of the cardiac action potential in a one-dimensional fiber, where cells are electrically coupled through gap junctions (GJs). We consider gap junctional gate dynamics that depend on ...

    • Corriente alterna : teoría y problemas 

      Castellví Gironès, Pedro Juan; Peñaranda Ayllón, Angelina (Universitat Politècnica de Catalunya, 2009)
      Apunts
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    • Corriente alterna. Teoría y problemas 

      Castellví Gironès, Pedro Juan; Peñaranda Ayllón, Angelina (Universitat Politècnica de Catalunya, 1993)
      Apunts
      Accés obert

    • Dependency of calcium alternans on Ryanodine Receptor Refractoriness 

      Álvarez Lacalle, Enrique; Rodríguez Cantalapiedra, Inma; Peñaranda Ayllón, Angelina; Cinca, J.; Hove-Madsen, Leif; Echebarría Domínguez, Blas (2013-02-04)
      Article
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      Background Rapid pacing rates induce alternations in the cytosolic calcium concentration caused by fluctuations in calcium rele However, the relationship between calcium alternans and refractoriness of the SR calcium ...

    • Diamagnetic interactions in superheated-superconducting granules under an external magnetic field 

      Peñaranda Ayllón, Angelina; Auguet Sangrá, Carlota E.; Ramírez de la Piscina Millán, Laureano; Girard, Tom A. (2002-11)
      Article
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      The study of the phase transitions produced in ensembles of metastable superconducting granules by magnetic field variations is important both for fundamental physics and for applications in particle detectors. Theoretical ...

    • Effect of RyR2 refractoriness and hypercalcemia on calcium overload, spontaneous release, and calcium alternans 

      Álvarez Lacalle, Enrique; Peñaranda Ayllón, Angelina; Rodríguez Cantalapiedra, Inma; Hove-Madsen, Leif; Echebarría Domínguez, Blas (2013)
      Article
      Accés restringit per política de l'editorial
      In this work we use a computer model of a ventricular rabbit myocyte to study several factors that affect sarcoplasmic reticulum (SR) calcium load, such as hypercalcemia, SR calcium buffering, or ryanodine receptor ...

    • Effects of small conductance calcium activated potassium channels in atrial myocytes 

      Peñaranda Ayllón, Angelina; Echebarría Domínguez, Blas; Álvarez Lacalle, Enrique; Rodríguez Cantalapiedra, Inma (IEEE Computer Society Conference Publishing Services (CPS), 2017)
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      Among the different potassium channels present in cardiac myocytes, the small conductance Ca2+ activated potassium channels (SK channels) are particular because they are affected by changes in intracellular calcium. The ...

    • Elasticidad 

      Auguet Sangrá, Carlota E.; Camí Babra, Enric; Peñaranda Ayllón, Angelina (Universitat Politècnica de Catalunya, 1995-05)
      Problema, exercici
      Accés obert

    • Gap junction dynamics induces localized conductance bistability in cardiac tissue 

      Hawks, Claudia; Elorza Barbajero, Jorge; Witt, Annette; Laroze, David; Rodríguez Cantalapiedra, Inma; Peñaranda Ayllón, Angelina; Echebarría Domínguez, Blas; Bragard, Jean (2019-07-01)
      Article
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      Connexins are specialized ionic channels that control the action potential propagation between cardiac myocytes. In this paper, we study the connexin dynamics in a one-dimensional model of cardiac tissue. We show that the ...

    • Influence of gap junction dynamics on the stability of reentrant waves in cadiac tissue 

      Hawks, Claudia; Elorza Barbajero, Jorge; Echebarría Domínguez, Blas; Rodríguez Cantalapiedra, Inma; Peñaranda Ayllón, Angelina; Bragard, Jean (2015)
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      Constant conductances are often assumed when model- ing cardiac tissue. However experimental evidences have shown that gap junctions (GJ) actually connect adjacent cardiac myocytes. These GJ are complex proteins of ...

    • Influence of gap junction dynamics on the stability of reentrant waves in cardiac tissue 

      Hawks, Claudia; Elorza Barbajero, Jorge; Echebarría Domínguez, Blas; Rodríguez Cantalapiedra, Inma; Peñaranda Ayllón, Angelina; Bragard, Jean (2016-01-01)
      Comunicació de congrés
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      Constant conductances are often assumed when model- ing cardiac tissue. However experimental evidences have shown that gap junctions (GJ) actually connect adjacent cardiac myocytes. These GJ are complex proteins of ...

    • Mecánica de EGT. Enunciados de problemas y guiones de prácticas 

      Rodríguez Cantalapiedra, Inma; Lacasta Palacio, Ana María; Ramírez de la Piscina Millán, Laureano; Peñaranda Ayllón, Angelina (Universitat Politècnica de Catalunya, 2010-09)
      Apunts / Problema, exercici
      Accés obert