The idea of the quasi-static change is based on the local equilibrium. It will be generalized on the base of molecular kinetics. Let us consider the quasi-chemical reaction of the type
∑ν
jsAj→∑ν
ksAk,
the rate of this reaction be \dot
qs and the distribution function of
Ai be
ni. Then
\dot
G=∑
iμ
i\dot
ni=−∑
s(∑
jν
jsμ
j−∑ν
ksμ
k)\dot
qs,
where μ
i is the chemical potential of
Ai and
G is Gibbs’ free energy. In the transient state some of \dot
qss are yet very small and they are called the
second coordinate. Then
∑ν
jsμ
j−∑ν
ksμ
k\fallingdotseq0,
on the coordinate. This is the generalization of the
local equilibrium. Then the product term of
G is the
small quantity of higher order and may be neglected. Then it may be expressed by finite number of \dot
qs, which can not be neglected and is called the
first coordinate. Such change of state, which is expressed by the
finite parameter, is called
generalized quasistatic one. In the following the living system is assumed to be in such state. Here
(∑ν
jsμ
j−∑ν
ksμ
k)\dot
qs,
of the first coordinate is the heat from the
virtual heat source, which is the fundamental idea of this paper. Thermodynamics can not be applied to the first coordinate, but we can assume the empirical relation between
qs and the
field of chemical potential, which can be introduced thermodynamically. Thermodynamical analysis of the phenomena of life is igven in the following.
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