This book deals with the modeling, analysis and simulation of problems
arising in the life sciences, and especially in biological processes.
The models and findings presented result from intensive discussions with
microbiologists, doctors and medical staff, physicists, chemists and
industrial engineers and are based on experimental data. They lead to a
new class of degenerate density-dependent nonlinear reaction-diffusion
convective equations that simultaneously comprise two kinds of
degeneracy: porous-medium and fast-diffusion type degeneracy. To date,
this class is still not clearly understood in the mathematical
literature and thus especially interesting. The author both derives
realistic life science models and their above-mentioned governing
equations of the degenerate types and systematically studies these
classes of equations. In each concrete case well-posedness, the
dependence of solutions on boundary conditions reflecting some
properties of the environment, and the large-time behavior of solutions
are investigated and in some instances also studied numerically.