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The cataclysmic stellar explosion SN 1987A, visible to naked eye, was the nearest and brightest supernova witnessed since the invention of the telescope four centuries ago. This volume deals with supernovae and their remnants, in terms of exceptional phenomena that produce and release high-energy nuclei and particles. Marking the thirtieth anniversary of SN 1987A, the proceedings of IAU Symposium 331 introduce our accumulating knowledge on these central sources in many active fields of investigation: stellar evolution and the diversity of supernova progenitors and their properties, explosive...

Having indicators to assess the effect of zootechnical, sanitary, economic or political intervention or the impact of environmental risks makes it possible to draw up strategies for improving domestic animal populations. This handbook is a compilation of the main concepts relating to the definition and calculation of demographic rates for largely non-intensive tropical animal farms. It is intended to be educational, and should help students, technicians, engineers, researchers and development staff to understand the definitions and formulas encountered in the literature more clearly and make...