The thermodynamics of conventional surfactants, block copolymers and their mixtures in water was described to the light of the enthalpy function. The two methodologies, i.e. the van't Hoff approach and the isothermal calorimetry, used to determine the enthalpy of micellization of pure surfactants and block copolymers were described. The van't Hoff method was critically discussed. The aqueous co...

Nomenclature H AW adiabatic wall enthalpy (J/kg) H w wall enthalpy (J/kg) H 0 total enthalpy (J/kg) h heat transfer coefficient (kg/m 2 /sec), h FR reference Fay-Riddell heat transfer coefficient (kg/m 2 /sec) L model reference length (m) M ∞ free stream Mach number q FR reference Fay-Riddell heat transfer rate (W/m 2) Re ∞ free stream unit Reynolds number (1/m) T ∞ free stream temperature (K) ...

An evident inequality between the enthalpy of crystallization of amorphous selenium, DHx , and the enthalpy difference between the undercooled liquid and the conventional polycrystalline selenium, DHl→c, was observed, which is inconsistent with the widely accepted idea that the two enthalpies should be equal. The inequality between the two enthalpies is attributed to the excess enthalpy of the ...

The specific heat capacity (Cp) of amorphous sucrose was determined by DSC after annealing at a particular temperature within the glass transition (Tg) region. The enthalpy recovery after physical aging was obtained from the Cp data through the Tg region after several aging times. This data was fitted to the empirical Williams-Watts equation to obtain values for the mean molecular relaxation ti...

By using density functional theory on [FeFe]-hydrogenase mimics we deconvolute the function of pendant amine bases in proton transfer to and from the metal center. By dividing the high free energy barrier into one high enthalpy-low entropy barrier and one with a low enthalpy-high entropy, a lower free energy barrier is reached.

This work deals with the inference of catalytic recombination parameters from plasma wind tunnel experiments for reusable thermal protection materials. One critical factors affecting performance such materials is contribution to heat flux exothermic reactions at vehicle surface. The main objective this develop a dedicated Bayesian framework that allows us compare uncertain measurements model pr...