The Hansen solubility parameter approach is revisited by implementing the thermodynamics of dissolution and mixing. Hansen's pragmatic approach has earned its spurs in predicting solvents for polymer solutions, but for molecular solutes improvements are needed. By going into the details of entropy and enthalpy, several corrections are suggested that make the methodology thermodynamically sound ...

Some organic compounds gelate particular solvents by forming a network of anisotropic fibres. We show that Hansen solubility parameters can be used to predict the range of solvents that are likely to be gelled by any given gelator.

Abundant Cardioichnus planus SMITH & CRIMES, 1983 have been reported for the first time from Africa. They occur in lower Miocene deep-marine deposits near Tiaret northwestern Algeria. Morphological features of trace, coupled with spatial interrelationships between and echinoids documented this area, provide evidence that endemic spatangoid Echinocardium nummuliticum PÉRON GAUTHIER, 1885 rep...

February 2, 2008 Abstract. Recently, Breiter et al.(2004) reported the computation of Hansen coefficients X k for non integer values of γ. In fact, the Hansen coefficients are closely related to the Laplace b (m) s , and generalized Laplace coefficients b (m) s,r (Laskar and Robutel, 1995) that do not require s, r to be integers. In particular, the coefficients X 0 have very simple expressions ...