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  Amr A.Yakout . Author links open the author workspace.Ramadan H.El-Sokkaryb. Numbers and letters correspond to the affiliation list. Click to expose these in author workspace. Author links open the author workspace.Mohamed A.Shreadahc. Numbers and letters correspond to the affiliation list. Click to expose these in author workspace. Author links open the author workspace.Omnia G.Abdel Hamidc. Numbers and letters correspond to the affiliation list. Click to expose these in author workspaceOpens the author workspace   Department of Chemistry, Faculty of Science, University of Jeddah, Jeddah, Saudi ArabiabChemistry Department, Faculty of Science, Alexandria University, Alexandria, EgyptcNational Institute of Oceanography and Fisheries, Alexandria, Egypt We have studied the extraction of Cu(II) and Pb(II) ions from different types of aqueous solution by novel cross-linked graphene oxide sheets by modified extracted cellulose. The novel sorbent cellulose was extra [ ... ]


Wael F.Ragheb An analytical study to investigate the local buckling capacity of steel I-section beams under elevated temperatures is presented. The study is based on an inelastic local buckling stability model that was developed by the author. The study is focused on I-section beams loaded in pure bending and subjected to either uniform or linear temperature gradient through the section depth. A parametric study is presented to investigate the effect of section geometry, steel type, and temperature gradient on local buckling capacity. The parametric study results are used to propose a new method to estimate the local buckling capacity of I-section beams under elevated temperatures. A numerical example is presented to illustrate the use of the proposed method. Keywords Fire Local buckling Steel Elevated temperatures Beams Temperature gradient