[Thermodynamics and muscle contraction. II. Consequences of the principle of maximization of the rate of entropy production].
For non-elastic irreversible mechanochemical machines of the muscular type, the above-mentioned principle (by H. Ziegler) leads to the following results. The velocity of shortening, v, decreases when the force F increases. The mechanical power of the system Fv, is active when 0 greater than v greater than vF=0 or 0 greater than F greater than Fv=0. At F=0 the rate of chemical reaction has the maximum and dQ/dF = -v greater than 0 (where Q is the rate of heat production). At v = 0 the rate of entropy production has the minimum and d/dv = F/A greater than 0 (where A is an affinity of the chemical reaction). The Onsager symmetry relation holds at v=0 only.
D008433:Mathematics; D008954:Models, Biological; D009119:Muscle Contraction; D013816:Thermodynamics
Termodinamika i myshechnoe sokrashehenie. II. Sledstviia iz printsipa maksimizatsii skorosti proizvodstva éntropii