Výsledky vyhledávání - "Louvet, Sylvain"

Report

Mod\`ele th\'eorique de la contraction musculaire squelettique : ressorts entropiques, processus stochastiques et m\'ecanique classique (A theoretical model of skeletal muscular contraction : entropic springs, stochastic processes and classical mechanics)

Autor: Louvet, Sylvain

The model analyzes the muscle fiber as a deformable system for which experimental data are determinated with the help of the laws of Newtonian mechanic. The model predicts the four transient phases for the shortening of a muscle fiber according to a

Externí odkaz: http://arxiv.org/abs/1311.4190

Zobrazit plný text záznamu

Paper 6. Mechanical model of muscle contraction. 6. Calculations of the tension exerted by a skeletal fiber during a shortening staircase

Autor: Louvet, Sylvain

Accompanying Paper 1 tests a theoretical relationship between force and velocity of shortening of a muscle fiber without justifying its validity. Paper 2 determines the kinematics and dynamics of a myosin II head during the Working Stroke (WS). Paper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::34add156d4b40e988520cf5b9c50eff0
https://hal.archives-ouvertes.fr/hal-02133529v4

Zobrazit plný text záznamu

Gallery 1. Garden of curves 1.Force-velocity relationship

Autor: Louvet, Sylvain

A muscle fibre maintained at a fixed length is tetanized to a plateau (T0) and then undergoes a force step (T). After a few milliseconds the fibre shortens to a constant speed (V). A relation between T and V is proposed in Paper 1 (Louvet 2019). We c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::9ecd7f238ff0026180db82b5c2d2d9c3
https://hal.archives-ouvertes.fr/hal-01966066v2

Zobrazit plný text záznamu

Paper 2. Mechanical model of muscle contraction. 2. Kinematic and dynamic aspects of a myosin II head during the working stroke

Autor: Louvet, Sylvain

The condition of a myosin II head during which force and movement are generated is commonly referred to as Working Stroke (WS). During the WS, the myosin head is mechanically modelled by 3 articulated segments two by two, the motor domain (S1a) stron

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::e6967d8c2ab0a18cf1d408d1f776763f
https://hal.archives-ouvertes.fr/hal-01966559v3

Zobrazit plný text záznamu

Papier 1. Mechanical model of muscle contraction. I. Force-velocity relationship

Autor: Louvet, Sylvain

The two parameters that determine the functionality of a skeletal muscle fiber are the tension (T) exerted at its two endpoints and the shortening speed (V), two mechanical characteristics. We established a relationship between T and V by developing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::4fc88cd0f53eef1c2320e1aec5a2f274
https://hal.science/hal-01965922v3

Zobrazit plný text záznamu

Gallery 2. Garden of curves 2. Application of the model to the calculation of T1, the tension reached at the end of phase 1 of a length step

Autor: Louvet, Sylvain

A skeletal muscle fibre is isometrically tetanized until the tension reaches a maximum plateau (T0). Then the fibre undergoes a length step (Lstep). The shortening itself is phase 1 of Lstep and its duration (τ p1) is generally short, i.e. less than

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::210b50895335e44d9ca1c21c73be060a
https://hal.archives-ouvertes.fr/hal-02114942v2

Zobrazit plný text záznamu

Paper 4. Mechanical model of muscle contraction. 4. Theoretical calculations of the tension during the isometric tetanus plateau and the tensionexerted at the end of phase 1 of a length step

Autor: Louvet, Sylvain

Hypothesis 4 presented in accompanying Paper 2 states that the lever of a myosin II head in working stroke (WS) moves in a fixed plane, the orientation of the lever being defined by the angle θ. From this conjecture can be deduced the hypothesis 5 d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::7b7ac4497ab858a0b50bb4c431019487
https://hal.archives-ouvertes.fr/hal-02112782v3

Zobrazit plný text záznamu

Paper 5. Mechanical model of muscle contraction. 5. Tension rise after phase 1 of a length step

Autor: Louvet, Sylvain

The theoretical approaches developed in accompanying Papers 1 to 3 lead to calculations of the The theoretical approaches developed in accompanying Papers 1 to 3 lead to calculations of the isometric tetanus tension (T0) and the minimum tension (T1)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::318b0a244ea786bb99328281c6ad1c48
https://hal.archives-ouvertes.fr/hal-02127600v4

Zobrazit plný text záznamu

Paper 3. Mechanical model of muscle contraction. 3. The orientation of the levers belonging to myosin heads in working stroke follows the same uniform density in all half-sarcomeres of an isometrically stimulated fiber

Autor: Louvet, Sylvain

A myosin II head is modelled during the working stroke (WS) by 3 rigid segments articulated between them: the motor domain (S1a), the lever (S1b) and the rod (S2). Hypothesis 4 introduced in accompanying Paper 2 states that the lever of a WS head mov

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::7becee969ecf0d820572ba6fd9cec9e3
https://hal.archives-ouvertes.fr/hal-02002995v3

Zobrazit plný text záznamu

Papier 6. Modèle mécanique de la contraction musculaire. 6. Calculs de la tension exercée par une fibre squelettique durant un raccourcissement en escalier

Autor: Louvet, Sylvain

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::34add156d4b40e988520cf5b9c50eff0
https://hal.archives-ouvertes.fr/hal-02133529v4/document

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání