The journal publishes papers on the fundamentals of chemical engineering, including applications of the basic sciences. Descriptions of original experiments are acceptable and likewise developments in theory; papers combining new experiments with theoretical insight are especially welcome. The range of industrial activity which defines issues suitable for the journal is interpreted broadly, including oil, chemicals, pharmaceuticals, food and new materials. The Editors particularly welcome contributions on newly emerging topics, eg micro-electronics, the synthesis and processing of advanced materials, and on the application of modern chemical and physical techniques to chemical engineering. Papers are also sought which describe the application of chemical engineering science in new areas, eg environmental problems and molecular science. Core topics are: chemical reaction engineering, applied catalysis, biochemical engineering, fluid mechanics, fluidization, absorption, adsorption, heat transfer, mass transfer, mathematical modelling and simulation, multiphase flow, polymers, rheology, separation processes, mixing processes, particle formation and processing, thermodynamics, systems engineering, molecular synthesis and simulation, complex fluids: thermodynamics and transport.