Impact of Surface Chemistry on the Removal of Indigo Carmine Dye Using Apricot Stone Active Carbon by Hamdi M.H. Gad, Abd. El-Hakim, A.M. Daifullah

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Mass Transfer and Adsorption Kinetics of Phenolic Compounds onto Activated Carbon Prepared from Rice Husk by Mamdouh M. Nassar, Yehia H. Magdy, Abd El Hakim Daifullah, H. Kelany

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Evaluation of the corrosion resistance of bronze patina or/and protective coating on the surface of the archaeological coins by Saleh M. Saleh, Abd El-Hakim A. El-Badry, Amal M. Abdel-karim

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Characterization of Two Historical Postage Stamps Made from Cotton Fibers and Their Restoration Trials Based on the Experimental Studies by Maisa M.A. Mansour, Yassin E. Zidan, Abou El Fettouh A Abd El Hakim, Mohamed Mahmoud Allam, Hayssam M. Ali, Mohammad Akrami, Mohamed Z. M. Salem

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