CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '91350d23bff0604c',cH: 'SYIkNcGjB_NYrCmeXeGn4Ifd8WNzsA2RCsiWUcJs5EA-1739787694-1.2.1.1-5oUitu7v9JpNPan0EjdRKWHjteQ_uXxbg2CupKFMy9A3k_9wF1jdvTX2AeVSqMv5',cUPMDTk: "\/abstracts\/search?q=Abdelrahman%20Mohamed%20Abdelrahman&__cf_chl_tk=P_4NQOzjeAPBNck3tksn0U2BG6s7GvFYiDG_NV7aaK8-1739787694-1.0.1.1-hlMickpwaz2povjeJ_739lt.oPzIVpliWrMozby_pOw",cFPWv: 'b',cITimeS: '1739787694',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=Abdelrahman%20Mohamed%20Abdelrahman&__cf_chl_f_tk=P_4NQOzjeAPBNck3tksn0U2BG6s7GvFYiDG_NV7aaK8-1739787694-1.0.1.1-hlMickpwaz2povjeJ_739lt.oPzIVpliWrMozby_pOw",md: "8h7HIrMTI7jqvjcj8Ph0KQal_Jry5lk9tONQF7M1.kI-1739787694-1.2.1.1-ZNVGuDrDUiPhScyq3.humMitUJBQ6dTRgyABGoWMVo9FMHKMBZDKsPSKdCGG5NUt_.2VJ_gq_L2_evUwUJ5WFLCqi29Xv7lKtRr0vCg.bropQ4S3u0YmH.lT4L9maE.OrLlsZY8XIJ5OG7WEiy86TZqgp0lrQUd0lnR6tpEsbCralq6OFYHVra7LSQjecpDHIYbtLIM3XyrRbjaap_M8FQ4zbLbo3kI7kwZzJ6QLpOnn0btORAC7uyapqcg2eMDuPcOW3DMtlML4Nx3yCAxo1Fwz.XKNIsWCP4T9QsFp2izrrzdZiBul1Zp6MQHrJYCqvPQNEO3pD6Bo8t79cCcbXNANnKa33OqP4zNXSGub.lzkOkJl4AvoYOkIHO4HSkaBFH7J7wd4fAl4zm7OaIPuvga0Vapzy12o_EZ3JIYJjehO8CBU5ljX6h6zYHIXWukQZAIa9_XxmluoRBs07hLkPK9GVuc0oxBXX8qsv2BzfLeD2r2tUWxUwi4f0AIklIH7J1Skr74Uh3Yt103hQKB4CSiKTXx4jwex8S8ykXzmmrmCI.FFBe9zkPP.ooHdKfMBbamPpz5ckrpGsJdWtlX47CFEF3gN_p_4QwYhawkuH2HBr8MIhGudB.noeI4Lt582sSkrCwH9.8s2P4xeEYVCqyIOAZBo1s2kT72xwuFUe_WqM.aFKmfmIrytZX5V6aMsO37LWVtfMk54pKmxY1swrmRmOeCd2LeIt1i9hesu671d85.rqr2lErQ7Wcfp8HRu48n1v6pRh97Wtn4WrhIEJdwfymXFgB8pTYoTW8SmoQ7BMy5nRmyUun_9H8Cpo4nMJ7Ps2sf7BfLduauJFpqF64tcVMQQzBorS608j7mVaa3.H0r.7_zp_Od27PlHdFrpaZ_jPfOh4g1y7_KBTpeJfPXeC70Md38vkLfRk.cH5Ecs7Uv.5DVfvJlo6Fv6XtVjP2kyekn0SeaBQ7CWAQ271TVeXnPl8HtgwX8RfgYLZCwSn8Se8eoA4jyxFeu10xrsSMNqUzh.9uQb8aMWzaEvTXHZcp6QxdeNZokYiOnqoml4OzIJkjHMkc9V4yX7V02sZ.TbykfsXAIVu1R7bp.ZiebkjjO6eu.nVq5wLJ1Hrt4DWjAvwhKjrNKoGKxZRS_adD9LH27Xzj1Z0NbLjFulJ91_PHJSSIEnBZj8KgLu77fBb8BTIh4Yd4PghbWQiOsD7myTcvVUq7RqxoOk0Jwbb.X2ZxgUqH6N1VtV5avwLLV4CBC4TJMbHoOTnuRHhQd5BxlclLD_bIsx5zUMR5JN2ke2_PqMgMETqtr2gntvXpPjxjfhAXy_7UKF9tIw4fObJobkWeQbsqdTyxkhDJkHHKuo5KyKESzA0g7rNJ1579XKH9mzGz_oeBgzdqabNfJyOJr2jGbVM7M_J8ECNn2G0freKi5lK0OT.GLi32drVn75jS3zTRYRvQbEtyKUgvmytCbz0_7fnazjmvcmPMz6ok5jrAKa3oTtbh1_fpH89rlC3s2lmYVNDuS7vKtMKbJk_ZMb5Pr1wk6u5qN06M0Vr40lrodD526Xo4PJiRMmeSAQSZ9sLXZHFnyUEmkRELnMhrcFRWAZXm0fH_S8l099ZLO4PiSnWDb8HOs83WbZrgadDhuV6UWZCeALFR7tws6w76HaztBRbavKqcQXrVES328U3bd90Ph8dSveyZjMe2NxdNJdPn1Ktje8V75AFX2WB8d8jpPgTlxf1Z912gtn8P7dLsHCnzQq5lHEGzEh5.RKnMK7PlQqiHffek95nOZlkvI7NIcHpNr3AapM5PzulztB7ZI3tg1WtUajeLSO9y2yj4ou6rc8h6m4EGdC8YrYMhUhc7I.ZzG1Z0OKR7VcvzamoOUAKVNpAtioXArNJ139fMm0YJJDDwnWZdI_R._ifrodnXPfQQkikt4fB_8b5kCrPnzg6lu_m0OWmUUoEu2H7qyk_zvcKlgjsfbaNdo16Sz5YI8NPN6mBerJbmJLVg",mdrd: "a7x_WN94xw02OPZQWKxqOO7jB2KmATTsgcinG4CgnQ8-1739787694-1.2.1.1-8iwyPr3D5H3PQ9OeEVxYwAoKUZiQai2TkVxA9juo2ZEJMBrQEttAWJa6mbfiS52OoBt770eJeISYIVfZzkbEaIK5lWIPUDIQle7TsM93T8xypCFiepG9CztwIcaySDTiGk3HQHNkFIl3KFANk256c_w2BxI5aLxe9Tg5CHrKfQwctWrXGO.AQdvgvCVUjgSAfKTfrKgm7JKhbd7Iv9nkzPiRUHHbW3WuPp9t9H_593xqOhXQ._ykrG3fiWKddXf6G1SJH0HJ._J5PAWj8snJk73bytlquJlbDGQ0nP_YJ2GZ.eHHmmwjPt0Ow4CtXi9_oAVluHU9c85zMBm.SE7JLqazmyTcXt0HGkZ6N7lywLj3oqBBB.WPDs0JE2ESY.DkmSiwB_OIkCjRy_gCyhTDV4SQMhRAMEpYZlQYmH7tIvWaB4fPts7GR1MFY7MSS4GRumPhLTib17H6E4oNS7gXXLMNXwOwDuOeDFI5y.qobVj4_Cq4Txd4j8bQPwtD3DGNGV0qrXSknnVQ3Zbr12GBMQ.OULB_S9vLu7w5t2XwFG1y1lGQXeKrj8jZMRI8FFCooJ_OlomjGEuWogOHconPgn0SGxqm3xGfLvFetz9u2FKJ8J0zqG9nTDsteiMt241zJ6JeMDj2F63SxqRAKXsb4TP15FAF3yDZR8mdRGvw8gczS7bAEJbxkCmI9voGQP63H2GCTZxdo76RBvePpuzPcO7y7EC7uuIrbm3Liipk2cgbSQXGl6UssUyRiBxhSJnuev5SCXUBrUX3NEh7nl9huOxaMfJysHrtscoeoRBsMRWBSP3AW8E1AUIrnsd07krycmY.BJCj.C8CxLNziO7ygVN2xK8j4H42Fo6ZxAjIiwufCB9ul62MRRyXGbmjUqw.zfFRONQVnnNS5z0k_.v.J83DdMYXIcixe.u4Gcx7aTxUx.mZagvzNoiqKBKHjYpjXXoqygwV7e0u.2H4GuxfVFhHAQnL7FwzfdR3x1t1TyQ2TQKmyMzrjJfoPhZajlfzhOsKto3wE6txR0Z6_J5B0OXWn4ermjVskv36qdwWbETU6qn_FvbBILiYLcM4JvUzh4hA0fjbnjjsVy1jMBdTQPT9rGj4OTDj0hv8DvmCVI2CJKAoa0QC3j4XsJo4tfPXm5IGvQ3.5QUCR6tpDZ0UQ2__ywuIwYTUjWqhcMjwkYv1sbDR967Ei3.kaHUGRmmQLIJSzUehXXTH0k4qflfrHlH6GR0YFP17jKe6q7.ee42naGCb3hNEJprzyRbXi09w6ZZWKJkoYuJmUIBNkn_5L7Zifb9EF.Mv6CnJ7mjWzxx.7elhNYBEbbKWFbimiQlW774U5mkvE6jrJFKRHh6PWUJuPnvYi3Xyjjr7XTzxLxXek7zS.Jor1Vt7Dc7uELEZSwaUEFNCJtPD1acvDGTHbhFD8dfwmzxtGZLF3i0U3yqhYymYOzy3AuHtRRv3mOo3F0y.ciWLuTcb95wL5WyRvBjC_yapE79EY8K1OUpCKN2xbwgOgvX7rtcbq.4QYXe.0DNdV66ra0K.SBr4yU9uFZbKyPGTstBQlOft9b03o9w10p7vRrn18uDsQyVc8dOiw7sTfvx_DbyAqOtQ5LENVACraEHSwBDW57C2en88H4NSizqaXrI7.wHtAB8YdXJvBVH5phfOhZVezQHUkogRwtUHaIhmVUvL6lZ1duJky.F51qhszF4z7HQNbPLPROHyUaBoeG6hF6.3SpLD5RXZwFyGein.FJXjkqkRS7V1iOtEoM4kzBcxThAabZbxrDZeH09MthF4DfIGb77YMXIhUACdjnyuLaGyd1iDmSWpfhPemZU.yn_ZBRHiZHKwJU_Wy34yEJHtrMBM.d0S56FaSoL5PLTum9ZNy2DLa719Xjm9x6tFjagqDrAZxvgwafouqNHDtyaNZgHjThSjBRw9lxnPMMddLfTj7A9kkUNzjeVCIhW.1Lo_dKbUfwUBzAI3"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91350d23bff0604c';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=Abdelrahman%20Mohamed%20Abdelrahman&__cf_chl_rt_tk=P_4NQOzjeAPBNck3tksn0U2BG6s7GvFYiDG_NV7aaK8-1739787694-1.0.1.1-hlMickpwaz2povjeJ_739lt.oPzIVpliWrMozby_pOw" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>