نتایج جستجو برای: s a multi fractal

تعداد نتایج: 13659343  

fahimeh Taghipour, mojtaba Sadeghi, saeed Olyaee,

In this paper, a fractal photonic crystal fiber (F-PCF) based on the 1st iteration of Koch fractal configuration for optical communication systems is presented. Complex structure of fractal shape is build up through replication of a base shape. Nowadays, fractal shapes are used widely in antenna topics and its usage in PCF has not been investigated yet. The purpose of this research is to compar...

Journal: :Indian Journal of Science and Technology 2015

Journal: :International Journal of Research in Engineering and Technology 2014

Journal: :Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 2014

Journal: :Journal of Mathematical Analysis and Applications 2010

Journal: :Physical review letters 2002
Frank Stallmach Corina Vogt Jörg Kärger Katrin Helbig Franz Jacobs

Pulsed field gradient NMR self-diffusion studies of water were used to determine surface-to-volume ratios and specific surface areas of the grains forming a glacial sand deposit. Both quantities exhibit a noninteger power-law dependence as a function of the diameters of the grains. The associated fractal dimensions of the surface area ( D(s)) and of the pore volume ( D(v)) are found to be D(s)-...

Journal: :Thermal Science 2021

Fractal calculus is an excellent tool to explaining natural phenomena in porous media. In this paper, we first give a simple introduction on He?s fractal derivative, and then it used establish model for thermal conduction of silkworm cocoon reveal its biomechanism. The theoretical results obtained paper are helpful the biomimetic design.

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