This paper criticizes the model and the new definition for osmotic pressure given by Parsafar et al. [J. Sci. I. R. Iran, Vol. 10, No. 4, 233 (1999)]. The model is a closed system containing 1 kg of solvent plus m mole of solute at constant temperature and under pressure P0 + ? where P0 is the standard pressure and ? is the osmotic pressure of the corresponding m molal solution. While the total...

The fluidity of liquid metals, like that of simple nonmetallic liquids, is a linear function of the ratio of unoccupied volume to intrinsic volume over long ranges as expressed by the equation varphi = B[(V/V(0)) - 1]. Values of V(0) obtained by extrapolating to varphi = 0 agree well with molal volumes of compact crystals at 20 degrees C calculated from densities.Values of the ratio varphi/[(V/...

Thermodynamic calculations can be used to quantify environmental constraints on the speciation of proteins, such as the pH and temperature dependence of ionization state, and the relative chemical stabilities of proteins in different biogeochemical settings. These calculations depend in part on values of the standard molal Gibbs energies of proteins and their ionization reactions as a function ...

Kojima K, Mckinley K, Donohue P, Sigal Y. The high prevalence of inappropriate feeding among infants presenting with an apparent life-threatening event. Turk J Pediatr 2017; 59: 304-310. Although there are anecdotal reports of a link between inappropriate feeding and an apparent life-threatening event (ALTE), previous studies have not examined this association in a cohort of affected infants. T...

In the study of the physicochemical properties of the proteins, it is often convenient to consider the behavior of the simpler ampholytes which reflect to some degree the properties of the more complex protein molecules. The investigation of simpler synthetic amphoteric models, usually amino acids and peptides, has illuminated such diverse properties of proteins as electrolytic dissociation (9,...