where aS,NB and aNB,S, are coefficients of interaction and other
parameters are as indicated for Equations (3) and (4) above.
2.3.3. Secondary interaction models
The effect of temperature on coefficients of interaction i.e. g in
Equation (4) and aS,NB, in Equation (5) was described by a simple polynomial model (Equation (6)).
2
C and a0, a1 and a2 are constants.
(6)
coefficients of interaction 1⁄4 a0 þ a1 $T þ a2 $T
where T is the temperature in