CINXE.COM
Just a moment...
<!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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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: '9134aa906e0ba093',cH: '37uy73x2x9YtndkFvFwT9DTy0HYho17H5d3fMJAsxeE-1739783657-1.2.1.1-VzAmlfEtngtsMVel9EabJBtPakp40ITA6hmbdoj19bZKqLGLrXGjlmuX10zhqjnL',cUPMDTk: "\/abstracts\/search?q=Hala%20Hilaly&__cf_chl_tk=9VeZnsRij4DtsxXchdQTvkepcwb.Y70eYC18cykMnA0-1739783657-1.0.1.1-ZIPDnRVNYF5qqdr.kTR9c7fT2tmXQ0kXnbjiJpd_.E0",cFPWv: 'b',cITimeS: '1739783657',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=Hala%20Hilaly&__cf_chl_f_tk=9VeZnsRij4DtsxXchdQTvkepcwb.Y70eYC18cykMnA0-1739783657-1.0.1.1-ZIPDnRVNYF5qqdr.kTR9c7fT2tmXQ0kXnbjiJpd_.E0",md: "ldw7aaa4riGqMuqXHO7PwLfcZOKij7.5WR1ikkkPKPw-1739783657-1.2.1.1-B9hIocG_bAghmhYhVtQ6C2QmW4unEAtQckeOTvcQyuvTOjm7IWfojhatsskzqSwwdcLRbdhrbURav1wifegzPjASLIPwM5OKBZUN86pI2CcMhGgNqJm1Z4L0TZWOr.EZkh91mYsv7iZ.zGCMc7GdDn5Xil3Gyp_HIIvKjfO_4L.Khdk0UUsf1_Y3ooBBmboXPwT_5W4KFRzOHh1g2KX7uldy118coFE0GTX4WsjJ06UllfuAOJbPkb84DUKSYMcBpbS28SRBJZJ0E1rFke29PdtkBtZR0pl_Ha3p1m4RqJemBoe0XCbU.bH6Pqmg7ivObVOFIKRupwR8k4dKAq9ExnLIaEHd2SOESm7knUf0ZDLDX9MIgefnQmqDnoiYiBLWnpiU6va0382pq8HvtmZnDMUfUEv0jppK_k8KtXgCKhk.721cf7whGZNfgX.wQxF3.taYDq5XRmBgrNmoDcyKwWZ8DHfycontDVXJCqM3nq2SoKiGcI6BS1b3.563C0AwYhVRBoHuCEnIVaSb3ALVO4r8XQC7lhP4q2_9jVN7YM_Ow7TMdkyePXm_XhmjB0SH.kzhzaNcdyoDftclKOhBy4Ixg5.qnHSmrt1VXOYTMP35asFfeRdBT.bffeqqF.7K4hvKxbym7twsJAHFZqLoE47IvnvEDUCBU0qM.AlL44ftxC7Rzl1lLiRA5bBJheLrBoulUiUKrNQJMBU7bVL6qpeMtf0Jixp8rG72p3TA3qXPhirt5IYbFOpYqjgnrx6TgMh4E8fTzQaIISYRZX36zNXM8WAtza3rMX4fAQO.V2d4DTbOVk9BcyifgZs6Hv.Lu_lihbrn9ldrT.h4i6DAd4Mw9_d6My7RWU_5lXS9nEWbeHeCQyRrJt.I99pyEh4U1mODLTnYlhTGbQCpMw9DQEwQs7HuBCpsLhahhT_.qubpQ7h__jZkvE0.9DzcpExT3Ls.6RuOSW4xrNcCRDEv3nSsmHfujuoi0RUvdNTzadHz04VJlFJ_sb5thgcqhLLbUy0LQHJ5wecevBLTS9MZArwDC8u_YTLTxvmNlTnp46.o1BTLZ1zkuBRMZsQ1KSs2iuhcpG_LlMWLt0BF8EoCj0PotjXMeaAjUK41xWkmnfL9zs.d1nsGuceRo1Nge3Gz4GOfoDzaIhVRMwJbcsTIsAvCE3sicfVkx8_ESStHjhCsuSDwL6VokUcT8g4qR2rBvC8HR8xp7ToNNNwgLcQ.bcr2XFlNvQJ0Kfagz1JzftcqLWh8nUQJPmomf0KDCMUxomLpynh5dDKMjBS7WdFEkmOZkd7mw3wIsjnbOJWEQDZ6RosPFPEKgRXIXPfQl3lcUapvkLIXYOMQ8W0A8OgYaF971QRBPHEYU_SIPpNKBXN.rEYuM1PWfOqUzoFlpw7nlSbuXfW5_YZ_wCGbSMcacKerpYz2EFBp5qFcYNu_qYxkrljMXcfYlrTcDUxTlw4yBPdWByr2KxjqbMyd.XmUTtFrFUpMQKzV_7CVCCWcx_GD.AmkPjDi59Q3RWX3BP8_9QWmw.d3FDnaDGNEddcWvgPzzv0B0hDYV93sNcAkgSn0vqW0QsYhF8.DOadzd5d3iRBjlMiD72DxZ.iLq7E607PrVbRIU2cdyBm1Zpc5nlyi0YG6ERtHPnXuKw06bIi5zlW4ycFgBjw0379DUwTDm8z6qL33tODzQV9xdUpDtxNTiKXbM_CQJrpXYfJZ0N1nauIX7STm_H8a0Ve5kwVshdVCGZmwjM0m4XS7MTnzmqmfQKM3_JdcMgbtlDH1ABNdafAoY5oxf.U8s6eGASA__B3vKGwt28xnSkGne_3QdFh7pJS27oYoE.bMNwSrxQ0ypfS8QPrxxIJmjX75CCiWPdOOdORahX13FsAJKd.dJujoxDB68hDuIB.96cCjt8tMjwQ5JgwEblOOdM7858rHPnL0E0Em6vFq2wQCv1G1x.s",mdrd: "tK7ZCJGzgsZNuLhC5.MV.xjpkLlLi4uCk_4PvWWLTxs-1739783657-1.2.1.1-s4Gi_B1uf2sVcbGNYN43eeQUDxH1S5ZQcshKyUYOEBO0p8dXuDnFTv1kDAiouxtxRb.IFUHELel9Yv8G0mHEsYPyLPDxqoRzNTPwWO2GkD1uSgOdk8a6ST3O_u7oNBGLKUPvoPZ6CQS.yvgaeOLF0JXDcIV2MtVSCLhkAOd5qyIZxRZEqgtCSWhKHua4pKHkjMTd55GsKxaxr4DdaFfrVpU0hwY2Hb9vYn7ubzYjXnB8mHpqAjz3W8YzsjhA2e06TZNBRXtmZnWQq2KwoEA6pCjjKV.Lb7P_WJkq4.rjeV4L1HkNxdEimpVRiGtRcqGtFDQEuVVZRyKHlcJwDnJxaZC_m2i8I.GQ1wg38lDrmRlnhKbNFEOWk2zBA2ITvx.w5.ZTg.gFBRFz22luKom5.VpDnk052zTNyhoumCY_S6fhoJhj9eHDZ9DndZZXy74yB4muqri5Qi.cBBbFWlbK7RnxTjxj8cN_CUWhitozMewr6ImnaI5un9aUB55HgA_TDK9pv0ks1z1CWPobSCMBhEUbW_eVpxsx0tYgFcoKNhfGBk4Asxm9Hb.68trcS_7WMp3qEVmitL3W5NWRD.BgCCTXP_UAReXDds7rDDti67MAEz6E0X.LzcCTW_Fi2Aa52XA2QxKSkET0dP_5NdWnQlNfon4n8qpNSm0jPcwPtUYRg5IIL8weeMW4e2ZBirroCf7HEe7LyCFrxW_9sNIIl0XXstr46TeQ_4XP7arTCzLKKs.J3xhg1gks7ogyY.maooGurgHbvVA9A25GdprMzDemlzpdpeUAwMXLi55SN5VhgCTHIcvd7PHzj3K1B0c4zB.YYgsjWZz_zz1GsewdkR.VyWhzhCsoHhzFyu8bR43lFmhjVljwFZt.CQlC2epYDo9Cnr7rAUu5hKJB2Y7G0HmhJ0WVxSZ49WuPDrpmfPosz8aEaAJjYm50sN0M51R2doNNuJpk7HNxUoYGS7W6XmLL06J.n9PgN5GTg6jtTDivKC7HVkbJAclmG2XXfTUWJmtqZD7UYFxn58ew6mcEqyGQ4vsPyQs9jrPGJi4wunXj_5JH6BYDat6Snpnm7zUSNTXQin_2oDKCcmMm33qZC5Nq6c9e5QLrPUJi_ah_Quqm_pLHK4iooqT9jYxO7l.XqtDIVDfGMsEq3pjF5nydeL1MRQIfCplcOMoTTxXh8r.92.krIHtuYQaFjIKLnfQ35JqEnva61leFeyZkOynpUImybJf3ZBCtYF0dan7akhUIQIJuOt3EvJvdzd9PNFofFj2jtIXJIGk74jipP_sYSavDKW3wJDu9Yc7NgmKvAI3B6WPbLrexFWQ5XHG0dHJWgUJmsVJgqsRJiq_ThJjZNF1RVRZgNhhULFmJ5MDt0f234PEc.g7q0SpF3QMmBYhcJSJMaMruZRyG.W35j3h5I_MiFvXq.PrbzLgX4pmE2PwwrwD8apQviUllsc6ZVlKxDAHNjMF34Q3ysyKn2rPoXSuW_DeLMLb_AA8C6lO733CBJKBy_dGfUvdYdGGn0aHHZT7EyWiXDCFkVbQGmPZP.O06Q8MaGAbPV7dMXFxL1C5oIo8jlNMwtNmYMqfRjCVgLqcuT6oOdq1wYhEyATb.XR6a2UT4Q3zgsihWpfWo8us02qnk4UREqKvUQRlkGlNNAHjXwaINSey_Xom4XldbskAjeKC49_AMTW5.0bsTr1KMnPw0cjJgfI8j0SBoRsME.0k7Xco2o7N3REaP7QujA5ejmH8gONhYVjaPmWjslNGIg7d02Abw3HpihxD2uFszAxhr_TfLx5ftuMUWDFcR05EW.Z.jZ5T88Y24y25vhm9191ZKSCmwWJQRUriv6neBb7EEUgY8wEfaOxi9P.aHHDq59sBLvfD.iigxMgbf_9z.gC4ixybSC9TLTJyCkc4MzLa1Rs4WiqZ5bGaCCq.UcZUpG6ex43jDGKK_hmRhFHs"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9134aa906e0ba093';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=Hala%20Hilaly&__cf_chl_rt_tk=9VeZnsRij4DtsxXchdQTvkepcwb.Y70eYC18cykMnA0-1739783657-1.0.1.1-ZIPDnRVNYF5qqdr.kTR9c7fT2tmXQ0kXnbjiJpd_.E0" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>