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: '9136c219fbfa4a11',cH: 'wvNzIAmooVpVeTEbz0rf4gRtC42vBNxznLPXZ1tbe.Y-1739805592-1.2.1.1-qHEYNSvFTsDCJLMQl6jEYsJxUeYzU_rA.c9P7h6ka1jHZdNYuVEzuTda1l3OeAZq',cUPMDTk: "\/14357\/xml?__cf_chl_tk=jCTICVfEr1shBVe86QMWf3PU8ehcDcs5.VWfm8Q477k-1739805592-1.0.1.1-N1LUVuHFjXL0u9INsyXugFy6alVuE6rrBOYDqdFQ1_E",cFPWv: 'b',cITimeS: '1739805592',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/14357\/xml?__cf_chl_f_tk=jCTICVfEr1shBVe86QMWf3PU8ehcDcs5.VWfm8Q477k-1739805592-1.0.1.1-N1LUVuHFjXL0u9INsyXugFy6alVuE6rrBOYDqdFQ1_E",md: "cndYtE865cwBbtHjHbN3g6ErK0PqpW0V34fN2ebOIgg-1739805592-1.2.1.1-0WIkOrc7abpnF1Tx36RtupQgrLMuPj2VrGWfu4T_Hc9xNaQP8xx0AZbpewt8awdBE44X.4voQrpEgGXK9Tlptt6nkY28q2ZjUSpcKGK2FN9AR885aVlO3CM8W7NVYAQwiy3EJgYYcVA9Tvh5ez3WPtOX2wBXVWSH5GNYYfgkiG_JsQmvToR7kBpchuyGQBcNohK6q7qf_xfwuFZFvVBMP9Zo1ld3fVFjPPPJaq0sskhqA68FKW8WP7et69NQIthASvy90M8ADRUDOWqfR9D4rahBah4KWjyAreC8wThNfVgP1d8cxFOOCkq_ZL4ssBrvtP0NLX.n6GvYE5MYVj73Y3czLP4L1STat.Wg7XT1YwJzeQ78PgUg2EMqBvxgmbHwmTZGjgtme.l3wyh6OA94Tw7ZUEp9qBEYSgodf84BBHod6RT6pgUGppWjALTXgyaVnV3thglDZ3nk7hqOoydtb0DLDr8vT44WTzYpTWAsGPC2Bsdk0nMQUCyIxv3zzOxUIsohx4t1VJSNB18_GpZ7pm9Mm0go54EJbZpukLJ3BUS49ZRZ3a2V1Pj3rminGLSpgGcvR6uykXEbQuChasbXMqyKHERl5dOJtKCVOgA_5qO3YSN2sRH7sne5LS0WU23fSHbPXoGm.KWokT_WEHxUwnc21xoWxc6KEF3491VR0bhwbO0K6Fe0CAtGMCuk3ghoGAq9ecHO.iJcqBna5Fk2n.ZZj69V3BrVfmVETZzKNmhFCkRaqWs..Uwrh0Zw3uM2wTT0cH3gcDkJn6b8SmhN30jxVDjv82NtU9END9.3QnUPqt7_60UR0rrko90bzLgWwboo_MC5vfE_shwlC8PxGm.AxHbKQkfywovHCWlV_jErQx4CF48CTLkcefD2_TGKNMR9gviDyywNr.gQ81jVtHbSIC_rRYIG5oUPyoZODTTF43ehGWgYSuolZTovkJk0oxkN2w9GwoRNh7cPYP6CVDhP4d8lyHSR.B7Pv_6BEL8VqAncFE_an.f2.NYwktBxY4ecVNFxLvZTuP74ozq4KxR5okFdELY8y3a4qZFD3Arvllh9mw6OWrjnfx0D.opkJzPvt_3VzIm.ho5a5OZKzo7kmAo4OLdiqDiYnYVXwAZAWEqz_eFurZkfQ_vIyIJe9D7ohyLx7.EcWzz.bKqo4GuoCNjSrG3Tud8VprBfxAjx8.ovnPjCwg4l1qJThdwIcW13Uq.DeXCBX8lINVkjTDIXVJjRkBjUO5b0752TD.ZLWjMm1SrNfz2OJVgvA9TQ_H5yx0TKdzcyBDb7ix_ATw8y4eegoWQI3.EA5qElGGAPo7wdrQjWkAapJb0Mu5PR69aW9zHo9VWrUNweZC_zi88Tlv4eT7DLIV6RMrfJSpxpprRyICTJu4oABd9Ee39wUIG9K9kp1bqR49gh8W_jiDpdN5WoI1zerwAVjIAthuJlfuxlxJiNriUkYTgvi4LKf17XnDDJ2xH8UILC_pzCApHATQrWS8aIcvN4LLVxqeVeurcymVtNf.Wdag9_k6Lzr3NDo3G9DiSuKq4F9h_gGaELVcCvb1P3LcHEAIWBpJmMuoKl2v2yAfx5hEhK0BCa6fr_5RkHGjDRx6IgtUoNvTf6MSYjkHmUIncHsfCmYNME1aqwqUY7jPqT.98grCmsOsBfJk3v1eAXMQQetN4_CBZRK0xjjc7NyfmRV9HpjShfiUqfJ8JreZTO5LDozgWlrwJcILlVFgfFrXhq_y6IZadYkQaHMRIVAwBhAs5yzGICjiaJrNPT6fHYfop.WVDrpNTRKNO1Uh65pELqMqNyfqlij4.DQE4w4f1o61R1pZVXlrPnX.3QPWWSFZGKoRqH565s.Du5xYpJsSFJYNPvNfX8zddjMvVB_DVeJvbJPV4",mdrd: "bt.sV7oOG5lOn7T9snrz1LYwUHp.AC8bXrTdtwblNLw-1739805592-1.2.1.1-HGNkeliRR2ZOy5xUoOuG46DTojp24s7hZVeAEFJtiZfA8bV5urSbvX.agX3.IWa69UwO4JGa.fddKlSnDWuiWqMeOywNUVExCwafDIda3hhGR0RCoq76ZJyjt.9YsOS0u.n7ecqfwPZ08lnHPrB9RrGXpy2dKu6aHxuk92ad9vgJ2pl55w6lZGtK6eMvBw3P5xHBl3J_BwtVAkOP28efA7zIj7LnVJQigOK6JOka_z4WKUr03KBCPfpDN5ITuDHV9ZHREfpJo0LHiiceMADH03L8RZHPgVMTXvvNjjch7SspapG.4NPi4BN6UXyybbQOtMFttdwAlalx810hqD_Q5Cj5lU08DOZDzAjT2waon9I8aItePSAySwYVeq1JrSJ2BVPWG6R0TjvdTN7ZRGFSZ8_6ZeTZgdeWk7MJXAYew6BPepqJObmrcHNkKHBbLlZgA9usQwVyG5wX0ifVJNyE4QH64R0K6ixd0BTJMxtMO8ZLVypoP.Pa2u9NcyzIBui.afNwE0MJX6jwkAjEVknWCjIXjBo_pRZMR3lKi2JDv7r4y8Wc8zfQF3sano1jWH68a0ezdoFk.q1QZwhH1De9IipUd.EqD3UHSNHJoGHVR.CjpisDRItvMOTvFFmj6IUCE_2qhq9gwyDEs7YPVkdqlUsRWU.ebMaW6PQ8xYI79gHkOqhTY9jNx3U65AZxs6wkXyDEu_R1KYJLP_wAhks7.kYol6oftpYm5wGobUbxJBWkn9pfD0_rxBLi1Xoquxu6pCo2E53LTi6cplUdKoY5sWxwBDBfrQWhHVvkZOWMgG8z1XNxFKswt.zLrcRdGIbHUhoAb.7D63_d_LAYIaFjI9LdNAK8G9z.jndAfN5Af.DsCNHFHumj5kqXCc6HffNPzEqcZxUWWyW1SlZfTHD8HefMrNhPMGZF5erDJohOiEB3hz3JRkViGOiIjkbLBh32HJJcD2CjqfZstvmbJ15.RELkQJuQnsSHHtBLItKiOkelxSJiw5FgipYuFGva3WXbQy2P8KUQuoJxQvFd6vIJuOir.LHg7tLNjQ67HJMQAOEWf4ZQcGf75p0zsU2toEM0XtajVl2hwQkON4OV.G7LYFB6wf3beGe.jhzHK5aDIaumLM7VrLGej7kuoEh_b3LuQYQyKpBQpxtGyyREur7rCsFPBPRg771BR37vITKIFDHbkkhrUk6EfIJGnyUdLqLgTpjWVcLMSfFXxucxMMd1VibklDRSd.zmTpHzHfqCeO2spEcrtEwT5F.Bk.maRo5D.SaBwOD8T_3ZzawnXTfz5f.p9exnT7i8xnQtbwDLwMRB1pbC1VneGF6Js3s3QMf0MwUbQU62G_mqb66S5IlxoVQZtEkXR8mSgH4grkFp6gBYZ6eaom1hWfxzPU_4vPsaCbfgSMKmi_rWUdjhnAwT_pl.NGCgksRu7YdHwXCnDPKQHClaDKPGBbYRPjIqJWcrQ_6HbKlEm2EjKUM4yyi0OXRVDDo9stTs88zLjZDU6UVZAqpqTlezL_tqzh5rMH9wFsJ.ggIrbmLocHqbHk1mIZdpMA82bfUlOZcE_swaGz28rr9rv8A9rJtbtLe4VOE22hstNLUtY_FipMPNkiiFlJEfSuH3VJ6pjwlVknXqKlWCWRliwZhckvB0.Ga8JXRvTTT8C7ZbHl7h04OSbMfUSgY5P7t5QGc3rybDZrEV1RKPbCmOOfMbybg27.xe_CaXvlee_nMshFVZnxwNyqj4Zu5kKLoDO8lG.qF.Gn.55QusDaQQzNs7K.HArIQtwwCmdgaELzOAms0DDvjvOn2AwiJWBKI5AJJFk2olIHGgZAvV2Zng_RlSVroBsOVHQs_Ty0jzuQSLS9dSp7tdWPzwmo8og7LXsvnpE84YX2MLxza4h3e0ZH6h4KKxvWpQnAWt8mcsuhrJQUz0jeaCtea9NOI1Ka_Kbs6X1_iMQlbbl2EEy4QCqq0WEssTnKgIABBcbPyuyMZv94ZTBAw08dxNYQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9136c219fbfa4a11';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, "\/14357\/xml?__cf_chl_rt_tk=jCTICVfEr1shBVe86QMWf3PU8ehcDcs5.VWfm8Q477k-1739805592-1.0.1.1-N1LUVuHFjXL0u9INsyXugFy6alVuE6rrBOYDqdFQ1_E" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>