Leslie Webster Shemilt has gained national and international recognition for his research contributions to mass transfer aspects of corrosion, to elucidation of the natural convection effects on mass transfer, to the dynamics of liquid-fluidized systems, and to the thermodynamic and transport properties of non-ideal systems. Other contributions equally well recognized are to chemical engineering and engineering education, national and international scientific associations, to national and provincial research councils and agencies through editorships of scientific journals, and in national and international advisory roles on radioactive waste management.

Dr Sherwood is 'the' world authority on the evolution of the gonadotropin releasing hormone (GnRH) neuropeptide family. She sequenced salmon GnRH in 1903 and has since studied the hormone as expressed in a variety of other vertebrates. which has enabled her to construct an evolutionary tree showing the changes that the molecule has undergone over the last 500 million years. Her work has led to the development of synthetic GnRH analogs one of which is being manufactured and exported from Canada for use in a number of countries, particularly in SE Asia, to promote ovulation in cultured fishes.

Israel Michael Sigal is one of Canada's most distinguished mathematicians. His most spectacular achievement has been his proof (with Soffer) of the asymptotic completeness of multiparticle systems. This work solved a fundamental problem in mathematical physics which had been studied by some of the world's leading mathematicians in both quantum mechanics and differential equations. Sigal's many other important contributions to mathematical physics include theoretical limits on the number of electrons a nucleus can bind, a theory of bound states in multiparticle systems, and the solution (with Ivrii) of a long open problem on the ground state energy of molecules.

David Siminovitch is internationally renowned for his contributions to our knowledge of frost resistance and cold hardening in plants. Beginning with his early demonstration of 'lipoid film' in the plasma membrane and continuing through studies on the changes in carbohydrates, proteins, enzymatic activity and molecular control mechanisms in hardening, his researches have now returned full circle to work on membranes through his recent demonstration that dehydrative freezing damage in liposomal bilayer model systems is analogous to freezing damage in living cells. In addition to his research, Dr. Siminovitch has exerted an important influence on Canadian Plant Science, not only by promoting high standards of research in the Canada Department of Agriculture, but also through his contributions to the Canadian Society of Plant Physiologists and to a series of international symposia on frost resistance from 1940 to 1970.

Dr. Anthony Sinclair's intellectual and scientific activities are almost without bounds. At one end of the spectrum, he is a pivotal part of an innovative interdisciplinary study (ranging from molecular biology to ecology) aimed at biological control of pest populations. As far as we know, this study is the only one of its kind in the world and it is visionary applied biology. At the other extreme, he is one of the world's leading experts on population regulation of both animals and humans. His work on east African large mammals - extending over three decades of time - has broadened into analysis of long-term ecosystem dynamics, including the role of humans in African ecosystems and sets new standards for the field, while his work on the boreal forests of the Yukon has opened up new avenues into the chemical ecology of plants and the population dynamics of their herbivores. Most recently, he is engaged in a biodiversity initiative, probably the largest and most comprehensive in Canada, involving universities, governments, and society at large. It is not surprising that Dr. Anthony Sinclair is widely acknowledged to be a world leader in his field.

Dr. Smallman has displayed excellence both as a research worker and an administrator. His studies on the synthesis of acetylcholine in insects and of the action of organophosphorus compounds upon insect cholinesterase have contributed greatly to the understanding of the mode of action of these important insecticides. In 1957 he was called from the laboratory to become Chief of the Entomology Division of the Canada Department of Agriculture, where he served with distinction until 6 years later the academic world claimed him to be Head of the Department of Biology at Queen's University.

Vaclav Smil is one of the gifted few for whom the term polymath is not an exaggeration. His primary interests have been energy, environment and human ecology. As a scientist he provides an empirical basis for his judgements, which embrace many disciplines. Five of his dozen books involve China, yet all have global relevance, e.g. effects of resource use, critical energy flows, Earth's biosphere, food, land and hydro power. He has become a leading expert in the West on China's energy, food and environment. He is a distinguished scientist engaged in explaining and generalizing his science for the betterment of humanity to a most unusual degree.

Le nom de Wladimir Smirnoff évoque dans les milieux scientifiques la lutte biologique aux insectes nuisibles à l'aide d'entomopathogènes et chez le public averti la lutte à la tordeuse des bourgeons de l'épinette à l'aide du B.T. (Bacillus Thuringiensis) épandu du haut des airs. En effet, ce chercheur et professeur a acquis depuis un grand nombre d'années une réputation internationale par ses travaux sur la biologie des virus et des microorganismes entomophages et particulièrement par ses études fondamentales sur le Bacillus Thuringiensis. Ses recherches l'ont ainsi conduit à étudier les réactions de ces microorganismes aux facteurs du milieu dans le but de trouver un moyen d'augmenter leur virulence. Wladimir Smirnoff a toujours cherché des applications pratiques à ses recherches les plus fondamentales, aussi peut-on le considérer comme l'un des premiers bio-technologistes au Canada.

Dr. Smith represents that rare breed of scientist who has crossed disciplines with outstanding success. He has applied a strong background in physical and theoretical chemistry to the solution of significant problems in biochemistry. He has used the powerful tools of physical chemistry, electron spin resonance and nuclear magnetic resonance, to study the conformational structures of molecules in biological systems. These studies include nucleotides, peptide hormones, enzymes, nucleic acids, membranes, and polysaccharides and represent outstanding contributions to an understanding of structure-function relationships in biological systems. He has now turned his attention to applications of these methods to human medicine. He is the founder of the Institute for Biodiagnostics, an NRC institute in Winnipeg.

Dr. Michael Smith is a Career Investigator of the Medical Research Council of Canada and University Killam Professor, Peter Wall Distinguished Professor of Biotechnology and Professor of Biochemistry and Molecular Biology Emeritus at the University of British Columbia. He is Director of the Genome Sequence Centre at the British Columbia Cancer Research Centre. He is one of Canada's premier molecular biologists, having made major research contributions in such areas as: the development of simple methods for synthesis of oligodeoxy-ribonucleotides; the use of synthetic oligodeoxy-ribonucleotides in gene isolation, in DNA and RNA sequence determination, and in specific mutagenesis; the sequence of parvovirus and yeast DNA; the isolation of new restriction enzymes; and the developmental biochemistry of the salmonid testis. These studies have been described in some 94 substantive papers. The innovative and highly productive nature of this work has resulted in Dr. Smith being sought out as an active collaborator with several leading American and European molecular biologists. In addition to his outstanding research contributions, Michael Smith's judgment on both professional and scientific issues is always critical and mature and his standards are extremely high, with the result that his counsel is regularly solicited and respected by both research granting agencies and his colleagues. He is also a superb teacher and he lectures with an enthusiasm and appreciation for his subject that is infectious to students and collaborators alike.

Victor P. Snaith is one of the strongest topological K theorists in the world. His research has played an important role in the development of this branch of mathematics and his key results are frequently applied by others. Snaith splittings are well known to topologists and have developed into a basic tool in the subject. Snaith has also made important contributions to algebraic K theory and is now successfully applying topological techniques to problems in representation theory.