The surplus of plutonium in the world is both an important security issue, and a fact with implications for nuclear energy and environmental policy internationally. The two perspectives are inextricably intertwined in considering options for dealing with the plutonium surplus. It was for this reason that two research programmes at the Royal Institute of International Affairs - respectively on Energy and Environment, and on International Security - jointly approached NATO with a view to organising a work- shop on the issue. It was most welcome then to learn that the NATO Science Programe was...

As requirements for high quality wastewater effluent increase, quantities of sludge generated also increase. Contaminants removed from wastewater concentrate in the sludge and can represent serious environmental insult and health effects if not properly managed. The cost of sludge handling can be estimated to constitute as much as 50% of the cost of wastewater treatment. If properly managed, however, sludge may be considered a resource of value. Unfortunately, very little attention in the scientific commu nity has been given the sludge dilemma either in research or in practice. Sludge...

K.J.Ives Professor of Public Health Engineering University College London Industrial application of the use of bubbles to float fine particles in water began before the beginning of this century, in the field of mineral processing. Such bubble flotation was applied very little outside mineral processing, until about 1960 when the dissolved air process, which has already had some success in the pulp and paper industry, was applied to water and wastewater treatment. The subsequent two decades saw not only a growth development for water and wastewater treatment, but also a growing cognisance of...

Proceedings of the NATO Advanced Research Workshop on Analytical Models and Institutional Design in Federal and Unitary States, Erasmus University, Rotterdam, The Netherlands, June 26-30, 1983

The separation of finely-divided solids from liquids constitutes an important stage in many industrial processes. Separation of mixtures ranging from highly concentrated slurries to slightly turbid liquids must be effected in circumstances where the solids, liquid or both phases may have value. Separations may be achieved by use of a membrane or filter medium which, positioned in the path of a flowing suspension, will allow passage of the fluid whilst retaining solids on the surface or within the medium. Alternatively the two phases may be separated by sedimentation processes involving...

"No one is rich enough to do without a neighbor." Traditional Danish Proverb This bit of Danish folk wisdom expresses an idea underlying much of the current thinking about social support. While the clinical literature has for a long time recognized the deleterious effects of unwholesome social relationships, only more recently has the focus broadened to include the positive side of social interaction, those interpersonal ties that are desired, rewarding, and protective. This book contains theoretical and research contributions by a group of scholars who are charting this side of the social...

These volumes contain the edited documents presented at the NATO-Sponsored Advanced Research Workshop (ARW) on Partial Pre8tre88ing, from Theory to Practice, held at the CEBTP Research Centre of Saint-Remy-Ies-Chevreuse, France, June 18-22, 1984. The workshop was a direct extension of the International Symposium on Nonlinearity and Continuity in Pre8tre88ed Concrete, organized by the editor at the University of Waterloo, Waterloo, Canada, July 4-6, 1983. The organization of the NATO-ARW on Partial Prestressing was prompted by the need to explain and reduce the wide dirrerences of expert oph:...

This book is divided into sections. Each section is devoted to a particular issue in Motor Development and comprises two or more contributions. The order of presentation mirrors the order of presentation at the Institute and thus is not entirely fortuitous! Nevertheless, it does not reflect any value judgement on the part of the editors as to the importance of anyone issue in comparison to others addressed in the book. This volume is to be seen as a companion volume to 'Themes in Moto!' Development' in which the more specific topics presented during the Institute are published. Together, the...

This book constitutes the edited proceedings of the Advanced Studies Institute on Boundary Element Techniques in Computer Aided Engineering held at The Institute of Computational Mechanics, Ashurst Lodge, Southampton, England, from September 19 to 30, 1984. The Institute was held under the auspices of the newly launched "Double Jump Programme" which aims to bring together academics and industrial scientists. Consequently the programme was more industr- ially based than other NATO ASI meetings, achieving an excellent combination of theoretical and practical aspects of the newly developed...

High unemployment has been one of the most disturbing features of the economy of the 1980s. For a precedent, one must look to the interwar period and in particular to the Great Depression of the 1930s. It follows that recent years have been marked by a resurgence of interest amongst academics in interwar unemployment. The debate has been contentious. There is nothing like the analysis of a period which recorded rates of un employment approaching 25 per cent to highlight the differences between competing schools of thought on the operation of labour markets. Along with historians, economists...