Over half of the products of the chemical and process industries are sold in a particulate form. The range of such products is vast: from agrochemicals to pigments, from detergents to foods, from plastics to pharmaceuticals. However, surveys of the performance of processes designed to produce particulate products have consistently shown inadequate design and poor reliability.
Particle technology' is a new subject facing new challenges. Chemical and process engineering is becoming less concerned with the design of plants to produce generic simple chemicals (which are often single phase...

This study focuses on the alba and attempts to understand its techniques and meanings not only in its own terms but also for the light of understanding it throws on other forms of medieval lyric and their later derivatives. Dr. Saville suggests that certain structures of the imagination which find expression in the medieval alba are characteristic of the medieval mind in general and may be detected in the other manifestations of medieval culture, including theology, the visual arts, and certain aspects of everyday life.