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OpenFlow Discovery Protocol (OFDP) is the defacto protocol used by OpenFlow controllers to discover the underlying topology. In this paper, we show that OFDP has some serious security, efficiency and functionality limitations that make it non suitable for production deployments. Instead, we briefly introduce sOFTD, a new discovery protocol with a built-in security characteristics and which is more...
In this research, TiO2 - SiO2 composite films are prepared by sol-gel method. The relationship between the effect and amount of SiO2 addition on properties of TiO2 films is investigated. X-ray diffraction, SEM observation of the microstructure and infra-red spectroscopy is used to determine the film's property. It was found that the SiO2 addition less than 40 mol% has a suppressive effect on the transformation...
Structural and spectral properties of curcumin and metal- curcumin complex derived from turmeric (Curcuma longa) were studied by SEM and vibrational (FTIR and Raman) techniques. By comparison between curcumin commercial, fresh turmeric and a yellow powder obtained via extraction and purification of turmeric, we have found that this insoluble powder in water is curcumin. The yellow compound could complex...
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