different symposiums. The overall theme could be described as "for and against Paracelsus". Gundolf Keil is violently against Paracelsus whom he accuses of being misshapen, unoriginal, a bad physician and a bad surgeon. He is also against Karl Sudhoff for being too enthusiastic about his subject. Other contributions deal with Paracelsus's life, including his inglorious departure from Basel whic...

the solutions of mathematical models for the estimation of the kinetic, and biokinetic parameters of naphthalene, anthracene and pyrene during degradation in surface and subsurface soils are presented in this work. the models were developed using the twin concepts of rate-determining step and steady-state approximation method. they described the biodegradation of single and a mixture of polycyc...

It is shown that the dormancy of predators induces mixed-mode oscillations and chaos in the population dynamics of a prey-predator system under certain conditions. The mixed-mode oscillations and chaos are shown to bifurcate from a coexisting equilibrium by means of the theory of fast-slow systems. These results may help to find experimental conditions under which one can demonstrate chaotic po...

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