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,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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: '91361b81cef9fd9e',cH: 'hrxY8Srq.pCz30PUxfUO_CJtQY4s5O..zJVs0DyY4lE-1739798768-1.2.1.1-FXMba9KvWuISM9EZ3VxPAHmyNEsYontBWvJz5DsCYoXWXnLDL9mHzCi9IhNmwQYI',cUPMDTk: "\/abstracts\/search?q=Lilian%20A.%20Okeke&__cf_chl_tk=OJ729ueRIWjw5JcsJZWkkOkTtqiNyQmAHt8hLabIGbA-1739798768-1.0.1.1-tM870zuNZavP_OOTdGr1kPN93vkBEThWps5vbigxTiA",cFPWv: 'b',cITimeS: '1739798768',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=Lilian%20A.%20Okeke&__cf_chl_f_tk=OJ729ueRIWjw5JcsJZWkkOkTtqiNyQmAHt8hLabIGbA-1739798768-1.0.1.1-tM870zuNZavP_OOTdGr1kPN93vkBEThWps5vbigxTiA",md: "4nyliyLbhHsFvfGkmne6.kVmO5ijmBLW2j7gwzn8vwk-1739798768-1.2.1.1-v_ZvEejar28WFrk0zs_cpX1lZHyHnkhkG2ai2x7kKVX0noOnT_APx9N2Q_g08HGYJnnuAUMcOMIpXKCOPtsnfEdwHT.CNLb8WuR4sNNlS3_w9Rlh.fMoranQ80_5BUf7Xbpqh13RmO5pqf2FVysP52uZVoGvJLXOF_WGprEiOMjung9KPRLh0v4ewGEmHx6RL8BUetYgJQ33JIhwu1wmdBH6sju_HpsAUt7aeqdvkKUFaq.IaeGZQg57Rapg_YQjJ5jnywAY_Bj_s6oLqVcV1WJ39Bfi9giY0FVrDpOxho2qu72nImX7II_2LJBv.1AjfrX.v_G4QvVGHNU_AbXHX8Tnim0ONgb71QuNXirqZjspBbe_ycR78jt2UYuIPG2rXR.smSE.WKfYLcE9HIaLTCQrSgxiqp4FAbG.8_WRqFZpTR51HVUM2vGMfbbYz9NoArUZ_.yoPDgJU8ogB7CHe9a1DSnGzwwdf4IXN1Iuz94Pp8O3J.1mtPLgWNlmIXgcLdbB7VsvggZLT5pke6wYBXM3REzg_XgfgRbtF2t0hqXZelwGJz9MFEfdnAhbcuesEc1ye0QsiOyr40qUOHK4BvE2eLBqUN54QUIXCIqT5hqNrGQdoChz6gjjOi8EaAHQVBdsPfnWO3eJI5NgRBq4JAxGJjKwxS16DKFkxhLRVGCNSO.vfsmDp8jDtjgizOaeovr1oJoGiR.XdEDMzFqcDK7.CvBG_yrilOV_4xORz8ih1WfBnW3c3O_SWEchtxnw1p70GqmKn1oZ.11UqQbnwizezv_cD0yESijEXpwodk7V3iNW6CwS6gJ70a9aSVp0DZuD6EhLj6lsqRigE3Q7JXvbqYYuWhVKzHqoH7QFB2V0d7uEwDoR.XVqtH8MgDzHWPZG7oiOqWpjr0Cd8xRkXJkLfMcs3u1sMHd05dpFKIucm6XyJSUlLEevJJGrc6.vCODr8PVdWuG0EyRwRWwqnfr6UTAHF8Oir21OkkARveBNpvDLe8BxP_rBssY4o.WzafFrtG_guuKWOGo0U5vlVYCr1SHUFrKB0jHLrRq3..XIfe3J.sWC6eXBlFpV507ZK2ttAyiqmnr0G3keOD4qoBDGeL139WVdDfB4Fy.A1A0h3IXO_w_6x4GiX8uDLO6.ItYfxk1dVlaN_XkPl68_5rEx5F_jAzwB9qzQRHnL9sUdFIxtU57KIn0DK3I.ZecwtR29XCx2cVDDWMRHmvPo7C30P9HgwFQWUVl0H9et9Q7e2q7tF.zSe7F.9Y8TSufkUofuFnIvHQm0iIgerpS57WuJRb37JquF96LqbaLYYHOf72gjT0b.8X92IyGDFIB7P2a8kmphMjM_scpMSzL3_TiD_AFVhHC.co2DO2f6KINVGGVUN5VsdBBNxSx9KLOR55S4e_KwbVljL5Sdhr.5Y36nzzzQMeXQhWREpIoVTW6IKpy_Z5W9NaYfi72uoNYlNYB0S2MFYEMq1UGQFvvt1QQfonKKUdJ.rLKcLqwcSwNrWceOtZQ4iNM.BEBfH8I.THTN0GJki_aU7YDyQLM.AoJnZf5Ao_c4UUCpKsT7x17Et9g6.sv9iXWHiKC7NWn0jcRgdOlVExUAV3sJjX87ubs6uR9BZ5N8P0kY8335jss28FaElLsYqGNShyHUwi3BWlwANytmbZrDzWfFl.LIfqEZN_tjZLQElQZr9PKB6caHxTaTqO938upDQooSc6Y0y1gjhDEv2f9wo19IJAjWWtRz5O2IgpgKf5pZEDmWNBSQ5zKfkKY8_7llDcIHYBMwR1x5vbvbhiq4gkgBIGR0D9ZeqX.apUAytvDC72Rf2Q.sYOIctfyKcyvV65PEKtIC8wVVzha0TStqcxwFRHxikESGxRmp7Nt4RPfs..QCx.QDHBdlB9DeHmIQEWFTcAhi.yqJe3h8m8vgbCX7BE8uRQQ_xHPeWqXFybcfNr21i70",mdrd: "bdCg2nuODKxK7rLfTHpR7j.r5HT9nCqrLw3TiLilxo4-1739798768-1.2.1.1-vV.BncWk0WNngMldud3pzpSDhaxx1GyKeE8NMKipRxym3xIlrKgc.IUxbrm2OLYvDaP0hCgHt1F781dKL8zJw2zf1p_hQZ7v0HCK6Ql1H21N.BNZDUAPOlNRE2wSoRJNAjXNNoxvPHxqwNvk5oGMPcP.24gpLzCd9.43mYEhvPao55oVtA2Zoz5VZs.TXxYQK0sus6xCck_8Bs3IsdJ9xaNL4fI7lulDVlc.3H5Lhdysq2thN9gF5f8s5OVc9bqQkpyjtUhYhG56VnDwWHmoo2p8HelAU4Rl.RQyRy9dt_xx60y3scGhS9IsbjoXFptsJ8NCntmPMnifpDtYTlHsVPNTuErc5rdF1Fuk8B_w3VYpGarjgQeSLLqfY3E2wNrBVwJA00avQc0HVfBOiKmeciR4BIln.s74v6dltH.7NVj36IbC1eHmW_HVIWO1AfRje6MxR6LepFnA.C3YgtvMgCPAFJ9_d1vBd.dMrkWH3m5PIUGNolW9SvmgTS4g3WSkVZYvMBGfuxTuGI6juARhfuwGUpPnSQbZGh0B0E0bITxJunYJpSTccUX2xD2nJPy4lzBZIpRGULYiVhLAg8nZzRcOgSsvGo2L7dmEu5UncmWaDws7TCb7AG_MPxLeM9cL2j89Aju96LdOAe5q99VedpW8JOPPgpIF.EHRYkFOaidMMX58axt1YirNYVN5NjHUKp8pX9E3EWqIGYAH0nV6y74W8Y0fXBBBAfgdVUb.JHZW9D4OSPIhzHUysoXfQ2NB07xX2ffmx4odhwIKwo1BfMWTkQH1jl30ZGyias4AkXQ1PRQx_vIYxQw55bguFXy8B6jtd2dFCWEXaTnftczTSi4Pchm8t3CRkCLpx04vQz4qT_J2.L.38kx.g4X.AxG33PKHyhhEEPqIYCLD8qb2tMUq0tYEMHGRVSDAamnJ0pFob9JC457BRTShGRkadXulf0G4DmHGuNMb9Ayz_7RNFzA4dl2OaJPuCq4VWe9i3Oj_nE4p4Doo_duVZNaX10Vtay1RFJVyCEfuzHcWd8Mg8PQIRM631RD51qFxywbDCJ60kmhJ_MjsKVIU62ERpHIaN13HxXHkgpajN9F8_JatBwB2XSy87Z.77T2GtU5O0fgcKxSpyQwHbmSNgH6VUc8CO.2VrMcRqDVm5PNieD1ODPXE8VRsvcLcezGEuLTC07ff51cA6LU9axH5Rh7bqg..izC0qPTW8jVnRFcfNpaMrkaSYb4AMS8aBBkbDvkdBfQUBKomC.4a7kyLhqAMRbpRZlXxWe43QZd29tfj5pjBHZXNlm755aH436C2N9YFWmOJOFQRshGIYPQ0JbkkEIXmZf5S7UjGFJ8xlsOA88tYL_pkEkxVMm9IVtVI3cyJQv40XGX6K6DJaAT2o37ylFlYU1Ovo2F1P1zZph8HPoGDHswo8mM48LCNJur2ZGN1b53GwS5k18EqvP0dm5tmf5tPKuWvkS2EWV_IMrIOP9ra3DdHbNTsFJC5dsIKuXylmPLjJtfvCESSDhEENSWj2I.MaHJEJRPCha7Nv6PpW1XWmrsUC9Mh1JYjP3s8BFNbVQMkDpBRizpNMvBaINvVthOX.qNFJZKMFwX4UTBSWdeuWCJCY81NYaAyZUFVPDn751EJG89e0tOGGt8QamGqPMUWx4N87QCorKDHgXlZotNs5JK_btjByF6PP5G.l.eJNFFGySRHQCl0NEBaJi8gXtz.OUd7hbahGCd6.ov0oqRX1BViO6p1fK.DVwRpMePgrys_F460dL_LPHpjbOsEzevQn3RZQzNtm.gN0nJrNeVJBqjrIgTeddLwK4vLBhLk0OCW8onPubiKSarC11HHmi5CvMUGzKw58ksUOES4ckzHtdkZj1ZeIYmiLlQTptpNq16V0ZQKN7zj3PiYzPb1LjarzEafXe2l2udJFvP4BNK0l0Ok3t4iSEB3CeyrD1FKJg0sGO9b1MSadkqhKzB8QbOO"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91361b81cef9fd9e';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=Lilian%20A.%20Okeke&__cf_chl_rt_tk=OJ729ueRIWjw5JcsJZWkkOkTtqiNyQmAHt8hLabIGbA-1739798768-1.0.1.1-tM870zuNZavP_OOTdGr1kPN93vkBEThWps5vbigxTiA" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>