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,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: '9134aabf485a3e3b',cH: 'hR7ER_pCDCf46AhGZHkwQmxTld4_sNExBNHU7HOXgpc-1739783664-1.2.1.1-U01_v55A5fDF3PlByVUX5cStbJzF_FlCY_djqtnc5QARN_mVoCOXPzF3S8xqzzYr',cUPMDTk: "\/abstracts\/search?q=D.%20Simatele&__cf_chl_tk=H1jMZE7fxWVfgK7PH6E5T8t.pqrQ_AlGYFeCFquj4gY-1739783664-1.0.1.1-Bkz9UJUHxeGuB.kaROh5I6RoJ_B4BcLikBBvKG8H60w",cFPWv: 'b',cITimeS: '1739783664',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=D.%20Simatele&__cf_chl_f_tk=H1jMZE7fxWVfgK7PH6E5T8t.pqrQ_AlGYFeCFquj4gY-1739783664-1.0.1.1-Bkz9UJUHxeGuB.kaROh5I6RoJ_B4BcLikBBvKG8H60w",md: "mH15xCoxOiX__8xMp.01glq3kXpjruP0f19iSD8H4Mw-1739783664-1.2.1.1-N4w0D8s02f486wNA0wBvW68LU40NFu7wYlajbbGJL2N7ATUg_bkNUy.WDn2eyVb0aRr258OPn6gAw95gWNNZR_o_GnG.qoyGJxlf24ncXTfERtbEQAR_VXwJWrafdLgZOu9oPQHAaG.hGITVv46xA4Ljd8MJQTmuyBs5EV2DaMLkLrAzKlljSxKM_pi.mCO3ndzdLa7OBjcINn55K4XGSgbhNdvaqKqpUcoE.lYP6twnzPnk2Zs1GGUHlvBk9wqaEVP2.WF1t50AbKKuuUENPCg7B5kUxLWXl_zSVzApDdjb4a.U2rp8YcCiFVw1pewf5S8MOYEL6WQ4095hPxE7XKAfDbd7O2zgZVbaq7jfoV48.b.kuZV8euSTQd.4kLis5qhK7j5ZmSK0U2nTWN5N_5weYN3jAYy0d1VNqoURIQ_XGklACQaVYdM_n5R5j5LsGzWs2tSxyZIWRfMEML_ZSC5qcJXmS1YWJpPLtm4M6Nn.s45CY2z26vp3StR617DUfPi03d0iW1SWk8uiSlFUdjvOpMM0UbKkkf0bIQipUAZeLzfXsmfl1yG_nlWxfe4H6.KcSR_ePuHKO8MHENIMg4Yc5B3.H_NaQBu.uQIZzo2g2RwQ0NTYCi_.lLdRiRIeTD7xHAoIskqWKk.wxuqI430ru7LxzLrW1.6vbhCqUqm64nOSI6eCoCpXtI.g36G5fvdi0Ehh29NzTapWx4rZjbB0umfQDG_pUHy91ocCY0vhKbKLzgiZ8c6nfyfwz9I_Zf8LWcq1doT8.rVbjWhKlHH446rhIq6rmHwvFhIGNdrg8eN9yyoGcmB586Z3P8xczWkoOonoaEtsoA.jQEJp2LF2xLdUG0OpUJazOqRwH3eNemCF1sEI7jywwVtW3arnvoQeBSL5YDmWqRpCdz2qlXSq2J8lZdrpKTC_iiueaDEXJjGk4GjPCBZu6yFfaBM2xmLu_Tf1DWRig8S2FaiitBQj8BRDtiBlE4bqC0V6sFvOtHoQP2xQfp6Uj2PnfjFY9ECs9.NbQBohGSo7UnmVO5BB2GOfOeLGucCTYDrh7QgkyJxAJS32Zd2hmw6MQmFD0eLoe0DOARKQalnsQcTTx9OjG1OM3gGqJcu9hBvzIvwrlTaHT2poJPS7EHKmVJR7oz3DQ1pI8n_en8ZPcuO2BH0zuuL_4u3tcZgs6XH4JkilNKyf9iA0xaSxZZBAgBhLlkgsMj.c6bycq5uafe4ZS27lIollFbNoEUeBjzQA7UROclOZFgYpM.f98ddJ2o3Gy9GfZ22Je9IvF8sIfWSw4L8i.FmB9Pf896PWOChz3U5s80sZlDutMN_B4OommavK0GVG7QB8yCNMUiQv_zkEff7.oRMrAd_Pr2Iuz_1KAKUFZBWcQ2GM0FBjcH_uIXTrRiVQlJ_BElfRSpMqvXsWS.LKQ99sAvYiq95AwD7U2D8OlxKlcUWC.eJ9y04iEP634Bmb000Y6V9nnnbvzS0MwE1sdMUWqPY.rfav67oms9q2WmL6J2BzeUOpLbdzFV6L8t3GJH1V.JtwHtSDHijcEE44Dszxx0tw.NMHRib1r93rSeI8._yBOE9egQZ6Goi1oDX.uBYfm7BSRHTecwx85iI_lleOQZn5ikLTkEGqhJiKriIndTRXu5WgGGMxWIoPqyaTEv8S2aWjbOmrjNXDinPA28G38s36WCcpNZmD5OwjcsNTaDcsklOBNWyKerh1K.E6qUm5fz4_5tfF_gZ7WnLRPUV7tQKhh5dJawdK.NyZJ9gBI6xKuYN3mKaumyYTrUYM4CqcuCJbphdgwN2tGuDfiTQ5Tis4A4jJa3vqdV_IScVtcjSmc1Zv0OUY9FG_64GkiJRAnXcs_PWeOgUoJ78Uzt60mM98gO.qeTjjG2h4QQQKrtQuJRXjfF2bZl_OwLNgKtYEnmScSkAlswNZANqkZTvVtUnOmIDT581iiy8",mdrd: "zTcL_Pd0K9P_C2Po8RiE2lXUoh0d2sHQR865OhYi2pI-1739783664-1.2.1.1-HD12wWCyw9SCmvroc2RgdvzpulUYoi2w_7Fxxw5n0POyN4zbIF4kCg3EVEeLVRTGy0WvI8ptA3SZUB4NHg_0ozgRXfU06gkNmryZDi8zokGERCyjdEYceUtwE90naAI0Yd8eISKvPNfZ2KeHFqRH4_B6wOHHQY3D86yn.n_2hQQ_OStZM33xnXmSfrWn.pDmyLEnPOYLG5wYjm25U5v5gO10SUGJ1D65NVDzVcJlVrdM9.jHE8yJNfEp0tVGWLpt9f30OblVYzZkWj_X2NS6m0Fo_Df7ijotIJyx7rwU16QcJRsOgy99hApAnEV4_aHDDQ34DrJc0M26.ouB1KTuFME_bY2FrDuNBsuB_Y38aZG3IqUe5ZTvkpvdqWwtirNb3OVW2P8sUe7oQt6J3GZdD26UDEb33tgAvoL8z7i7GLdnZJkBxS1EDI2uC1A3iSvnUHpgmbeEuiASdmGMHeUL0wmvtNtrNkEQusdoj36H6014aLpSKyH3GjZSkeKKQKhWkqMoRZp8TSyrwHGDf5pFm6PYedmQ8IqP.kXLRGvKRZmRtahz8QCUx8xR.TFUOiBsr6mQJ3BAsqrJKiZOlQ9y0V3dgKeIMsmrBYZvQncETIQgLGG4P_ro98r_MHrFVyGIl1dhQKiva0lCGnywssdh3UWZOS_shHNdwYiLUoXvMYdzYHsOPf6CdGk3luMaRa7Yiyw62WIDU2g_oBeNJGmR3okAlUkgY.1B3ZxB3xPSAzV3rxQJ55z83jSABQojhHECq8yWSD4BO53v.QF74.7Bo7cWEZuQHc7mZTUzN9moXz1FoCKrHPo9AscPoRqzT0Wo0ZvoVY2TX_F3CuF_RD1CmWYztdONSThEBIHvwKOp3REo6tVIvcqDIaWIvTXMJbs4_un33SsrWFP8Zq1094ZZFwFc5A4gvdxbylpMXZcqAd4dVP7ea02HuXyqcNOw5nZILKy5c_U9kt2JPDQYAWc.lOZ3jRIfd_AfFQ8ecTbwRT.4oIJ1ssnUVsZ_1r_E5mxrX1S_petlSqkTcZ.d3VglCwsjROl1DIOCVBvjFWXjj8IL7RQdh2dJcWfH3k1nFjCqx6hCaCmEHL_PMTEmF6hDiG_vYGJPAxzGXn35uvtoJIVBXVnlg3eVEFkPAkGoIYORDBRgUOqjysFRefb4ulmCMol4cvi5.5DpXEt_JpuxgZm0HeJh.XXbpjplGjntFkOiKceQunbudH04Alkfe5x8Ndg.FltEU8bwxfM8fNqhx3TtgfAzU7IhLq_Z9Fuhm59QNbqKSiDaDX3kY.TZKA.dS5JR3E.hjO2AK14jR7hT0bEiY_ESHrWvCft7DoEx2xF5YHLkvrjFIXS85O4jc2NGJsNGY6_dG6QRK1zMyySWugBYUibX5FtqccvL2rirIHLb4lfVjbXqn6me.Ds.fLwtUBowkWYl6pwz7_21.YEfAPoL39l6WU8cm1kc6B76TtvRBKktewx8rsdahSXKKDvjug4TWtRYcA0R0DLVrM8qj3zkGnJW_ugiavqBvMi8dd05l6R9.jVDUkN3ADoMfrPSJkHrvOmfl7HlZSlWDq6lCLfWfn0Qodi0pv6kxBX4Ds5I9GDOK3Vfmrnz7utKWK4EfPSMPO0P8HeqJHWGzjYli..wkj0hddgLF7x.7GIbvYhEJuTxYZgKmepR4BCajILEVWH_aebSG4l3bgJ0AaGOIbnsMOq1Av4PpGK93IuJ_7.qDp9iIeoJ6Zyp8cVSnGyNLbXWqoZECFsJRvb6irFDYvyYnl8tCuK_fplNm5x6Klk1wOH_1GmlAyPVtBkDRdo5.OEiMrZ123F3sljuUTCbJOBxFDQ_TgJKf50UBGuUeHp11FVPvGJ85R1v3eQ5XuG7w5GVoNS5mbV3NTlLC.K7keq2.MaRumvra9dFSXgN_CpL2v5I1_uEXWX.sPUhmuokyB_Cu3fFk2F8_L3VohUfW0X0Ho9M9eiPUESyUSeDLWHd"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9134aabf485a3e3b';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=D.%20Simatele&__cf_chl_rt_tk=H1jMZE7fxWVfgK7PH6E5T8t.pqrQ_AlGYFeCFquj4gY-1739783664-1.0.1.1-Bkz9UJUHxeGuB.kaROh5I6RoJ_B4BcLikBBvKG8H60w" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>