The development of mathematical models for process systems can start from conceptual modelling, which is defined as characterizing the process system to be modelled by physicochemical concepts. The resulting conceptual model serves as a basis to further derive a mathematical model. In this paper, we propose to develop conceptual models using an ontology that represents a conceptualization of pr...

In the distant past, astronomy was often intertwined with religion into a unified cosmos. As science became a distinct cultural enterprise, astronomy has witnessed a variety of rich interactions with other fields. Mathematical statistics was stimulated in the 19th century by astronomical problems, and today astrostatistics is a small but growing cross-disciplinary field advancing methodology to...

Microbial melanins provide a biocompatible and scalable approach for bioremediation and radioprotection technologies due to their physicochemical properties.

An improved method for measuring distillation curves reveals the physicochemical properties of complex fluids such as fuels.

Chairman: J. R. Durig (USA; 1983-89); C. J. H. Schutte (RSA; 1989-93); J. E. Bertie (Canada; 1993-97); Secretary: H. A. Willis (UK, 1983-87); J. G. Grasselli (USA; 1987-89); J. F. Sullivan (USA; 1989-95); Titular Members: A. M. Bradshaw (FRG; 1983-91); R. D. Brown (Australia; 1987-93); B. G. Derendjaev (Russia; 1983-91); R. K. Harris (UK; 1989-93); A. M. Heyns (RSA; 1993-97); E. Hirota (Japan; ...

Key words: soil-water transport, van Genuchten model, petroleum hydrocarbons In modeling a phytoremediation strategy, the transport and fate processes of soil water are influenced by subsurface groundwater flow, precipitation events, microbial activity, and transpiring vegetation. This transport is modeled in a variably saturated environment in a vertical dimension and is represented by a Richa...

wheat starch is the most common type of starch in iran as well as many other parts of the world with enormous applications in food and non-food products. to improve its physicochemical properties or create new functionalities, starch can be modified by changing its molecular structure. amongst different methods for starch modification, physical methods have received more attention recently. pre...