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These proceedings of a workshop held at Isle-aux-Coudres, Quebec, Canada in August 1993, provide a comprehensive, up-to- date assessment of a fundamental subject in modern stellar astrophysics. Hot, luminous stars play a crucial role in the rapid recycling of matter in dense regions of the Universe. The most luminous objects generate the strongest outflows of material, which in turn have a profound impact on both the interstellar medium and the underlying stars themselves. However, recent observational and theoretical advances have shown that these outflows are highly unstable and ...

Clarke's Analysis of Drugs and Poisons is the definitive source of analytical data for drugs and poisons. Written by over 40 international experts, the resource also boasts an editorial advisory board of over 45 world renowned scientists. This reference work has been completely revised and updated for the new edition, and comprises two volumes. * Volume one has been greatly expanded from 31 to 44 chapters providing extensive coverage of all methodology and analytical techniques. Of significant interest include: 1. Quality control and assessment - separated into two chapters to reflect the...

A strange field of speculation is opened by this phenomenon ...here we have a star fitfully variable to an astonishing extent. and whose fluctuations are spread over centuries. apparently in no settled period. and with no regularity of progression. What origin can we ascribe to these sudden flashes and relapses? What conclusions are we to draw as to the comfort or habitability of a system depending for its supply of light and heat on so uncertain a source? -- J. F. W. Herschel! We can imagine, at least, that the study of Luminous Blue Variable stars began as the official court astrophysicists...

These proceedings of a workshop held at Isle-aux-Coudres, Quebec, Canada in August 1993, provide an assessment of a fundamental subject in modern stellar astrophysics. Hot, luminous stars play a crucial role in the rapid recycling of matter in dense regions of the Universe. The most luminous objects generate the strongest outflows of material, which in turn have a profound impact on both the interstellar medium and the underlying stars themselves. However, recent observational and theoretical advances have shown that these outflows are highly unstable and inhomogeneous. These characteristics...

Research across international boundaries presents challenges with the need to consider relevance of research objectives and feasibility of procedures in different settings whilst maintaining scientific integrity in terms of design, instruments and execution. This guide is suitable for those thinking of undertaking a multi-centre research project.