**About the Editors**

#### **William E. Acree, Jr.**

William E. Acree, Jr. received his bachelor's degree (1975), master's degree (1977), and doctorate degree (1981) in Chemistry from the University of Missouri at Rolla. He taught at Kent State University from September 1982 to August 1988 before moving to the University of North Texas, where he is currently a Professor in the Chemistry Department. His research interests encompass the broad areas of chemical and solution thermodynamics, spectrofluorometric probe studies, and the development of linear free energy relationships to describe mathematically solute transfer processes. To date, his research has resulted in the publication of more than 1,030 peer-refereed research articles, one research monograph on solution thermodynamic properties of nonelectrolyte solutions, six volumes in the IUPAC-NIST Solubility Data Series, as well as several encyclopedia articles, book chapters and educational articles in the *Journal of Chemical Education*.

#### **Juan Ortega Saavedra**

Juan Ortega Saavedra graduated in industrial engineering (1976) and received his PhD in 1979, being the first doctor from the University of Las Palmas de Gran Canaria (Canary Islands, Spain), where he has always worked as a Professor of Thermodynamics in the High School of Engineering. He directed a research team working on phase equilibrium of solutions with young PhD students. He has contributed to a number of papers and has published almost 300 research articles including book chapters, divulgation articles, contributions to databases, etc. Currently, he is Professor Emeritus of the University, where he teaches and carries out his research, which is now directed towards modeling.
