in this study a simple and general chemical association theory is introduced. the concept of infinite equilibrium model is re-examined and true mole fractions of associated species are calculated. the theory is applied to derive the distribution function of associated species. as a severe test the application of presented theory to the van der waals mixture model is introduced in order to perfo...

The density-density plot of the critical lines of the van der Waats equation at the van Laar point is analyzed through its algebraic properties. It is shown that this curve is an irreducible expression of the fifth degree of genus one. In addition, we show the topology of the second branch, i.e., the T= 0 solution, which will interact with the first branch as soon as the energy parameters are s...

The semiempirical theories of mixtures developed by van Laar, Margules, Scatchard-Hamer, Wilson and Renon and Prausnitz are used to study the concentration fluctuations of binary liquid alloys formed among the alkali metals. Examination of the fitting capabilities of these theories leads to the conclusion that those of van Laar, Scatchard-Hamer and Renon and Prausnitz are appropriate both when ...

ii This project was commissioned by the European Centre for Disease Prevention and Control (contract ECD. 1843) and coordinated by Giedrius Likatavicius and Marita van de Laar; Programme on STIs, including HIV/AIDS and bloodborne viruses.

Vanessa M. French,* Ingrid M.B.H. van de Laar,* Marja W. Wessels, Christan Rohe, Jolien W. Roos-Hesselink, Guangliang Wang, Ingrid M.E. Frohn-Mulder, Lies-Anne Severijnen, Bianca M. de Graaf, Rachel Schot, Guido Breedveld, Edwin Mientjes, Marianne van Tienhoven, Elodie Jadot, Zhengxin Jiang, Annemieke Verkerk, Sigrid Swagemakers, Hanka Venselaar, Zohreh Rahimi, Hossein Najmabadi, Hanne Meijers-...

1Department of Rheumatology and Clinical Immunology, UMC Utrecht; 2Image Sciences Institute, UMC Utrecht; 3Department of Rheumatology, LUMC Leiden, the Netherlands. Yinghe Huo, MSc Renske D. Veldhuizen, MSc Désirée van der Heijde, MD, PhD Nick J. Besselink, MSc Johannes W.G. Jacobs, MD, PhD Jacob M. van Laar, MD, PhD Max A. Viergever, PhD Koen L. Vincken, PhD Floris P. Lafeber, PhD Maria J.H. d...

Accurate vapor-liquid equilibrium data have been obtained for ethyl acetate + 2-propanol and ethyl acetate + ethanol mixtures at 84.8 kPa, and the results are discussed thermodynamically. The vapor-liquid equilibrium data are correlated with redlich-Kister, Margules, Van-Laar and Ortega, equations the parameters and standard deviation of which are calculated and reported. The best correlati...

In a foregoing paper, the author reported evidence that multi-spin-axis magnetic structure proposed in 1964 by van Laar is realized antiferromagnetic CoO. Within nonadiabatic Heisenberg model, this tetragonal body-centered generated atomic-like electrons special band of CoO, mechanism may emerge only because model goes beyond adiabatic approximation. The present paper compares structures transi...