This equation shows fractional cohesion parameters representing the acting forces affecting a solubility process. The methods of the experimental determination for each of these parameters are described in reference 69 page 75. The expressions for the enthalpies of the DNA denaturation process for five-component cohesion parameters shown below have been derived similarly to Eqs. 37, 39, 38, 40 for three-component cohesion parameters. The equation 37 for total enthalpy value is identical for three and five-component cases.