Acid rain, ozone photochemistry, long-range transport of pollutants, greenhouse gas emissions and aerosols dominated tropospheric air pollution research in the last 30 years of the 20^^ century. At the start of the 2V^ century, acid rain is subject to planned improvement in Europe and North America, but is a growing problem in Asia....

The recognition that chemicals in food, whatever their origin, might present a risk to the consumer has long been recognised. However, early food regulations at the beginning of the century were primarily aimed at prevention of adulteration and fraud rather than directed at consumer safety. It is only in the second half of the century...

Simulation is an essential tool in any field related to engineering techniques, whether it is used lor teaching purposes or in research and development. When teaching technical subjects, lab works play an important role, as im portant as exercise sessions in helping students assimilate theory. The recent introduction of simulation...

Textile chemical processing today, particularly the pre-treatment processes require a highly sophisticated technology and engineering to achieve the well known concepts of "Right first time, Right everytime and Right on time" processing and production. Chemical pre-treatment may be broadly defined as a procedure mainly concerned...

This report examines the different fibre types available and the current research. The...