a two-dimensional model of al, si ordering in alkali feldspar is formulated and used to calcul~tea ccurately the configurational entropy for the model. for this purpose, a new method called independent basic unit or ibu is introduced. to compare the results with the exact values, this method is applied to the onedimensional model of albite. the results given by ibu are found to be accurate to t...

the binding of sodium n-dodecyl sulphate (sds) to histone h3 was studied in the ph range 3.2-10 by equilibrium dialysis at 27? and 3 7 ?c .t he binding data have been used to obtain the gibbs free energy of interaction using a theoretical model of the wyman binding potential; and the enthalpy of interaction from the temperature dependence of theequilibriumconstantsfronr thevan't hoff re1at...

in the present work, the interaction of three water soluble porphyrins, tetra (p-trimethyle) ammoniumphenyl porphyrin iodide (tapp) as a cationic porphyrin, tetra sodium meso-tetrakis (p-sulphonatophenyle) porphyrin (tspp) as an anionic porphyrin and manganese tetrakis (p-sulphonato phenyl)porphinato acetate (mntspp) as a metal porphyrin, with dna have been studied by isothermaltitration microc...

Free energy and entropy are examined in detail from the standpoint of classical thermodynamics. The approach is logically based on the fact that thermodynamic work is mediated by thermal energy through the tendency for nonthermal energy to convert spontaneously into thermal energy and for thermal energy to distribute spontaneously and uniformly within the accessible space. The fact that free en...

The failure to calculate the vacuum energy is a central problem in theoretical physics. Presumably arises from insistent use of effective field theory reasoning context that well beyond its intended scope. If one follows this path, led inevitably statistical or anthropic for observations. It appears more palatable resolution requires some form UV/IR feedback. In paper we take point view such fe...