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Published online by Cambridge University Press: 10 February 2011
A variety of growth manner of the fungus Aspergillus oryzae and nidulans under varying environmental conditions such as the nutrient concentration, and medium stiffness are investigated, ranging from a homogeneous Eden-like to a ramified DLA-like pattern. The roughness σ(i, h) of the growth front of the band-shaped colony, where h is the mean front height within l of the l horizontal range, satisfies the self-affine fractal relation under favorable environmental conditions.