  We consider the inverse problem of determining different type of information
about a diffusion process, described by ordinary or fractional diffusion
equations stated on a bounded domain, like the density of the medium or the
velocity field associated with the moving quantities from a single boundary
measurement. This properties will be associated with some general class of time
independent coefficients that we recover from a single Neumann boundary
measurement, on some parts of the boundary, of the solution of our diffusion
equation with a suitable boundary input, located on some parts of the boundary.
