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="390"></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: 'managed',cRay: '91e889296ba3df69',cH: 'A.MzB1RjrG6biqrIBYP9AbZq5Ogww.5xvNVhKYnt82k-1741669725-1.2.1.1-qgrWgO4YXm7nfRonY.aGMQeWu3MeNIwLLsm9Qkg2BPZz_LvwgL9KV6OJXlOrqebN',cUPMDTk: "\/abstracts\/search?q=Asmaa%20Ahmed%20Nasr%20El-Din&__cf_chl_tk=MC65bwsw51RElMQ2NyW89954NS2Z7P6hjvRK0WdCWjo-1741669725-1.0.1.1-9MAgHy6aTycIAMeIDCZIC_z4myTkhq18yysg2v_payc",cFPWv: 'g',cITimeS: '1741669725',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=Asmaa%20Ahmed%20Nasr%20El-Din&__cf_chl_f_tk=MC65bwsw51RElMQ2NyW89954NS2Z7P6hjvRK0WdCWjo-1741669725-1.0.1.1-9MAgHy6aTycIAMeIDCZIC_z4myTkhq18yysg2v_payc",md: ".grE3MENl._ZGwF3.59Lm10kvF3T8ERfbnNIBlqcrl8-1741669725-1.2.1.1-TDHi5vMUVNwyA4Y66I9CX.ekmM9nhiZPM.kDp1xVSTyNPd0h2E8mJGw_._FitLA.sxL9Kz1U4lZnLVFWwgptICKAmpJgAZyZgf2hO5fwIkpu6HBXRnxC9c23VESbQhoNHFxrw.nGs1WxSvuI2qVY0MWodJn9W70I5OxLXkmw4pZoXQ8kp6oulZKRI7.8fxIXAr5cnVKjhE3WzT27Djiax3Uv5gf6DoeRdE3vhFQfstKhnO2gyW4m9L8k7RNvQieah5EJFEdJfRMxhyR_jywS9BrWTxHGRUPmwEbFLztEMt9rQ9Sc4zXjRuMEr_ZS.hoNm9skVP2TBJL1.orYyOv2CQtB32MJk_Iu0kILxGcU7xBMbPo9ze4sSqpi_R6S8hI1rvA6UpEiWXo7oSEaQpjtppaOXkEhHe00Lc69LtF5a2XWHJ5HMxipVUP.rGPx0lgsFER5Vw2KdPEiEi_RfQJZzXJen_vn4f8pim.HnZl.AViGqGkPw66flXuR3QHK24uitNtF2PF0vSlhefStwu4u4fkaSKsZfyu_yZTNE46LqFW.ACbkQgx47Cp71w4s.ILzbD2vbANKyi7aGLofxd.rb3L8tTqFLPhyBOEnihNMiafd6I5GeyQqUvopKUdRVei883R_CQvYO2BMMY3SRZteqJXzFOA0Og1H0AuB0_KtDUeUvh_dTyXaTWmoCBOZrPpnXdirin7m8xLakDa7UoyYehOL5LfolWyy1rMMWJ0XjN0GAxXtPZYApNpCWgKYs1XwC5Ah6UsUSvtivpeUkhpn5rUtm2HUa.vywdtr726_M_C2MM2531naCOp1liKUD5fWw4VKAb4jyEcwh7I2VfqQN.orKQgriTlJ_hCtF.DietFyzvz9lAGrCSJcdxGz9rf4zca1rJlxG8TcEoS1.QpYxKK2DMVyrNMaeFFmcIiOdjb4jY6HXdNPE1LOxXFtJzoHbsCAc3fWhYCG1MCR.EfIkAQTVs_X3Ep3jcOTTtTZtXTBFBZJduGAevQnKAPrgtXrw4W5W8YQsOBt84bw.XAOOCQgERFI_aug6rv12fEQUUDroxTJZXG8CIjJ8erctJBANab3Lt_GYBm4Sa4J7yf.MxlDzt1MwXQQczRkypCGG_JFaREchJBNYGbSIzIYFnrEzr_d0FUouv4ec4eYAuZR4jBcpl6v3k5pWrf9C4wAdj9QKtlGQBHz2BHjLdqyPOuXliw13rURUHr7gzwtY3jw5zOnvc9gjRPRV6b5RtTf0ZUg.mPimum0mvFGdikmLaxw..JMczCFPUrhrPuNvxLMepe0bhGziwsO12gDNJO0YwXsCReGN2YlJvyT1B8RmYsO",mdrd: "bvOW.gkYzibQWtRckoR9EPUtGdQ0dtSXv3swVQXzhu4-1741669725-1.2.1.1-fli0x9TZx4Mm12.HmsJ2QtielxI0PADYs0G9DsSi1_UWQPcAWedPPaTBin.ij9UqRkU_0TWg1MxAV83sjvNS9qG..uZP67.6rbLFrIebu9L9GYTGAnTPRclyoYJmAVmPmSdgUvUrdv2dv0gfExOHRm3E5nc7SEEV2gatCyNrcWvZh1_zh5QFkDiLiO1wagh_0Xba87YcFr._5hvtEcI3qsXXiIN5HmN06v76l6qtvYIxaftieJgVo55Vclp_5F18DruS_2I8LN6.ChuDvpJT4SLDo9dkAOB7cPZwh5kn9vrAsHFRPGdcEchxungPFaS_3UrEPsH.AKn575yQ70S.e.MfEtzh3YXmkBZMoJ6oDKKNP6sLaxV6Yjz49r5B5SSpZ71OY_BByBIIL6bRyqgqq0amOifVECYjYnKZiHiH5wPtFiycbcPGNKANmBLYyfpQWGfEYluAJnq82ChuKwOhydUUasH8aBJ2sWqo6XAbjvDZHIpZ5E6eCOUObR.kc8vwLLSDn6S49QDbeJdW9rjeOcyKzLheKYJ8tnZ46yPvR7sQVRpo_5nHLDCeEfCidDN2jvb.j_Vk5Xyp9HIcN8TUHW4IZh1X7MeYnk_LMedbYSDUfafEfBO1mAkhQZFM8gXRtz2RMF830p8oGkK.lK8aSMjNXBMUJ43HRnf0MPZawHKaEGA7FWZQ7_RPMt4e4NpNgKK9qck00rSmTy80NEehC.F35IyVfd3PomCH_VQNZF_GaRSaxZJ2ufm2f0E1jWBhT3yC_UjVM8swooJjR_ynN0410rXD8.houvvoFqN9HWhzq6ggUoi2CNV5BZjx_X1HJsCqQDcTrCY3.5IYSEJAMUJQiU1get6l6BJqpkoQr6O6FXllB5_FHh8Og0FHu1C1Jc5rF3tqTFvX0Ie.1l09bUTx2J9Jcr8fmto3T5lvZLHcfsNRPEAumXxPRplx3Y4CGmHaBCZ8Qd4C007x2trQaDF.l45qAfzxtKlB0a6sMBXil6Mad11YbfDgith3mF7kg94m_X2ubO6wsIQf4_rgkAUe2lED7JfLU0aFg2k1oaMLKAe5dSBGmHvNFO1HN7X53A5LBY93.fRSNpXjaAXELOqOuO2f5.DNM2YjZqeJZKZaGIBCYUTJIsgry78Se_OzR8BQL2yPwRRXMgNq3pXp2xp2mVVIOzaf3amYRJ.RRhilSNSBiwSGyhfXj5vpeNB12jTyqpMLsWyhheNU8Dna8VS5cXHHqQ3qQDyPWO5CX0XgqPyW_7tuokyYSP2NpkRV9t8MmKnhaYD0h62gFT_zApVSuKjvkcM3J2AckiZCRQ_Z72X7.k7k3qN_UtxR13VCFWyKgF6poG.MEFTtjkxkW93bnchQTNgp4sg.zk2UP09Nisx9RBbA7ITEvEdqvksH9lQnHjfBh_kReZ1T4Xeac.iKFiFuqQgTEBnp2fXfdBip_vIeIrrm4P5KewafDHRSIBeLz57z9bvFoogpKilHWsAZ4DF1_pWMvW5TNmxwcvsgu_39ddcHS3.dPWXoECm4GxfVTqHI8lNb6RPkfsrdQbC0usgcue.mOKe8Pk3jyucfORopNSxluYEWBRoT6oRsHL.jiRpZhOIpD9zhx1VjJStleSI7hODOmGCCm_20XkrKcLyAGMJYAHvkkKrC_ZnVB21CEXX.VtbQBqTY0nsWfUbROMBjfqEEYEp6CTokEmJlLKPUWFzQZJWVivm8XzowNkNqwsDsr6bNxcvqzZxWU2CPWmLPh9IU97z0hnAMWYFCYmAFAvTRVxByLByWtndpydAp1UjVbrNACH855YVseKxVkus4k7c35C6nQY5YemsNgchsUhbqKhYc5CkcDDpF2OWVigZLwyOa1ExyMmxmOyc0J1VNRVDDoRNOaX_tF4xs4q8bn32eGT_PGMnwqxuzM_lkurX_lfDh9jOmTAy6s0u7jLDsfSKCjFIG0PF0ZTE.U2yHoGHVBeP8BcGDvXs9"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91e889296ba3df69';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=Asmaa%20Ahmed%20Nasr%20El-Din&__cf_chl_rt_tk=MC65bwsw51RElMQ2NyW89954NS2Z7P6hjvRK0WdCWjo-1741669725-1.0.1.1-9MAgHy6aTycIAMeIDCZIC_z4myTkhq18yysg2v_payc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>