Anomalous diffusion has been detected in a wide variety of scenarios from fractal media systems with memory transport processes in porous media to fluctuations of financial markets tumour growth and complex fluids. We investigate the solutions for a fractional diffusion equation subjected to boundary conditions which can be connected to adsorption desorption processes the analytical solutions were obtained using the green function approach and showed an anomalous spreading which can be connected to an anomalous diffusion. Also a multidimensional fractional diffusion equation in the presence of an advection term was considered in ref a generalization of brownian motion to multidimensional anomalous diffusion is considered by using fractional differential equation in ref and a fractional radial diffusion was considered in ref . The generalized diffusion equations with fractional order derivatives have shown be quite efficient to describe the diffusion in complex systems with the advantage of producing exact expressions for the underlying diffusive properties recently researchers have proposed different fractional time . Anomalous diffusion has been detected in a wide variety of scenarios from fractal media systems with memory transport processes in porous media to fluctuations of financial markets tumour
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