List of Articles scattering coefficient Open Access Article Abstract Page Full-Text 1 - Determine the absorption coefficient of visible light in the southern waters of the Caspian Sea Jamshid Karimi Masoud Torabi Azad Open Access Article Abstract Page Full-Text 2 - Improved Gravitational Search Algorithm (GSA) Using Fuzzy Logic Omid Mokhlesi Seyed Hamid Zahiri Naser Mehrshad Seyed Mohammad Razavi