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: '9135ceec2ac33dad',cH: 'dGPG89E6q75L8UolQV6ZhiEH2LTsz0b3po3ktaWASmo-1739795632-1.2.1.1-rTdOTe3MjpMyBbc3SjLJvOI3rcxb2C.WnHgo7.7t846wjmEdcw1UP7GbdUeJUdOq',cUPMDTk: "\/10013805\/json?__cf_chl_tk=Uyue9jT5JW54C2R9fFa8r0OZdPgfhnCcD5_3HZcFBr0-1739795632-1.0.1.1-tHU2Dv3dB5LutL7SRTdN3w2l3_6ExnAQzFD5EbdYYO4",cFPWv: 'b',cITimeS: '1739795632',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/10013805\/json?__cf_chl_f_tk=Uyue9jT5JW54C2R9fFa8r0OZdPgfhnCcD5_3HZcFBr0-1739795632-1.0.1.1-tHU2Dv3dB5LutL7SRTdN3w2l3_6ExnAQzFD5EbdYYO4",md: "JdR5jJrt6O6NKVeiZ03kegxmah3n9WT4WzvxxRxj_F8-1739795632-1.2.1.1-42dMokpXntij3RIzBM_vBy5_gZWgsuZViIzbpdXG9zlQfk9GArhQJh48wiDRt.teW.xRidH1ItWYi.9FN_xwzxx3dhgnrYkmXwPFhRmHDrz753syxfMvlOfR7iJXAhBmeb7LLz8P6bZlIDiUAipaX_7OGymtMOcKS58MsIxZT8YH46f8HSNYuD1.R59JfVdToBXSAkVc6RBn_TtO6pPaht0iABvxDNZANmZ2qIw6mqN8pzjLuPsPbwr3bsW2x0N4WEXpgrAJE.nz0DwkF7QLPGz3tg9qVhwnLvV_qcQ3W2WS6SK7L.zIM3lWpBufy2azTmtumiFYLKyPghNUI3iOUtLG0NSyTkEgL6UDkcyFYKzEA1_bzTC5TDnhbyPkA4ZPlrbsXBqcj7kOjEN4Lw1Zr2Kyh77R27bwaUgzLv.i6Tt6m4jsU5_oC48qzwVA48RtXMdPVDdjJRYaE8VwQEogZAnCV1I0Qef_8JHvlykL5UW4dRMXwEGaKkgEtnELAK6D9jDdp97mGQMLREql2SPe3_AD8jVJMgupsPs5BAfXDHR3ga6YeDCJiqQin3CvZ.YDsc65JJJih8gnB95ZF3nB1HOPtgNTNZfe8ybE6IqBB0op5U1XpWasILnM57XGW9nI_zaL1qXZIv6jIw7YDroWOIn86m6_FxjhTcxuZFH_4.OPWWEVwpjPpwwj9sE7GhyXXNS6.7KVsSK0F1al8w5YuDIvx0zq.I3FXYkq2egtvQLcS9rx6rGsEOLJdDDV8dzKpkda8g7bgkNVJfPneu08cCftsVyJ.v1Kavu_VXNiBRsu0rOeL_jpVoCGJZjnJW4JAyYjvJvxoUANLBZ1DnTL8AzXdyAfhx5KsbPVN_9eeyaW0CjYvzLjYaRBQ1qRlD0nmhpJHMpcTPUkaCzEEQPUgxSyRcmZaC4rhwylkp.s9ZgjMwQ_Z_Pz3G3i.7mH8bC17cunZJGZv7nEhgQ7FRwACUvyG067cnwCCAKJtouNe2c8Y38DzjvdKztFJ5vZDr54y0kS5kCQmYtx.zQIH51zRYWGPljgoe.h7M7ZZPa1luftNUY3ZJsak9gF_tP7dCt3Riq8YSkIwwXrqP9LR9ZMVmKM.aFLB_DA2yjEnX0D6nNf5HBrmpKEnkQ9t4JZTxA_v22iuKt2RBVt8FrbtQiAMm7pPPeiVjhu2ley3GtIu4ZwMH2zMqfgdBF_1wQcw3VRQhf1zmJzmKi.CzAzo4oKYlna_9WoIw6YJiCkOnXWRUHon0BCE3tV.UhTS8jkh1Rf.eLmxaOQmJb8AS_qpgrV7A1LcD_W4zgl2.Wfqq3bG0oz1z0ucSsaDksFA.PudARTYCE3WfCywZyZJqgYWulhNDf8Bxflu6Io9jv0H8Dg.9lAOcXIJa.3.VR7NUmKUMg.O3mSMZsN6TorapmN71yw16DVVbdrm24GBW5iYsHws3jUuKlaWfVyRJW0gle_l2m4L4.ZTqryo.JKbsUYWM4jEjijxl.fd4T6.01hY11kDg5c66teDwD6nF1e6rrs3W1sXKVZLn8uCHCLB8ZfXIZYMVg4fmZWWECXyB7pRY2L3upNSMdAHsS6pSwYXLPo14VPJwLYOcpUHc6ZKzcH9K0DM7H_MEzFd6rxTCbXxtfEY3SENoR6M84PyLeVbkS9yrxRAjPEKuRU8CBpGv6s0zPtehqHHUwxeoXRK6_QMqqdaB8TA5iPG9uBlOUHd9mhik9DbRuFNCz4DMKdi5g7GjErMeKGprA4fpdF2Z5lZHD5feB9FEZLqm4H9jL6JBffxtCDGo9BdqwAU8s24cHDUDlmwpg3ajfzXZXrn2AAfDIWe2w4NW_17di03GBz0s0asEg2drZf6UjYivEy_ErzH8fQMxQueplLyyAyCCV2pnUhy.o",mdrd: "dqtYryWHQXSG1p9fr5HoJe6BFokSzsd.lKwU01hsITY-1739795632-1.2.1.1-HKUDz9h57SZH8BQUST07DHvGnwrty9BE7oCHZl6FETcaSH9qS_omzz.ghiGGNME3veB2iG_5qiF90nemZIH6Ccu4Sql4AgwWPVzixQ0DsxGTeWxCjNwVFI2zmh_yZSHxTSgVtvm4KrTT1xMhm7.44XDYxsW.JR3ZJ85w4cGy4t9BrpfanCQ5c2U5uoOPaMq4LDPY6O_GRIlPYByCKnoFkhf0pFGqnu4ux_vSfMviLbKncA3XyiUQNgWZvf8fInITDCawhuxDd0S3_vp_w7SHvpxBlz8VdWP_hq5fg6Rd74HBCKcwhIWI.pEYMwvJcor.gzHA74AXzEWmM7WygkKHnM29t7bdF6X6vmBz9JKNXBBUdZJnJKg0y_FGsL1ULy4FmcneQXX4.P9W5lTumjLuU33XECev6N7qSnY0N3kZ_7YqsWfq.Z4nzlZs4DptJP4NtZxdNyjdgiMkg60uE9kMNxKXjFFmxCCPQQ93ZWw08ZrH2HjlZ0Iob.YPHxdaZKE6GT_zy_PgE5CGK2my7aoI3lQqphK7unVqC8eG_6E1sDAmNLoEYSgzuu8_PL1N1vfA8vCr9pzwDfhaAUTvVJRc0xhDLLFrUvb6UNnQThjmyTsFH8T2RpHT_VX2hfGI0WoAxECMg2FokciegSGOFcWaa68C86JgAXEwCf6zW8nhhRT0hKoiFOv9BjtvmJ8czuMPy._JjgaloSpZ6v_MLRn2kujzhSBRqR6LPtR7X36.82e8teARC6ENYcHkerVhN6_p1R9qs_Imyv3SkD81bNRYqhZINlx.nGVfgDzx4oT.J18T.3UDxkCSDPPyGY67fF5ENezzqRHzEIBdnjXemJevt1VrFH9chJfdIeXkaACbmDzGNkZSKLlvUJt4DnHweGIKOhXvatQy3SRQrLfL3mrOFmi.zsuXBGNrt08TLfLwP7SV8k9mCHvWDHokq1URNd2xydotKb2qneCM3Eg_wtQw1EEq2cnep40jUJ0tFN01Xp15O9pfDLmrlaursDjE9.dB2CD0ngcVNK34TlFKv1BTqY.3_jHablFXl7lcWcu5UuzTB1wzl.8YP.mluJHhT3.U40l20G4t2DMjZLkba9vLoL8bxJoocvdviPh0OpRjY.d6nI5pVbDj_OGbTBduNqjCfQaXvw.S3AI1M2iz4oXd3uJtwYNWBY2SDYvBUwOh0UDs2x4x35gRQz633Wu24Pa7W9XZla8pkXwKC5NcLPyPSLNM_SOyL4z3IkhdI4hPswluaND6Fk610UBENCywKIgi9MqwwYeaZnvx0v8j2ByGqDwA4o6t2FlxiL57Y7H2_2yEQC.LdWL1132WkEDWbaJ9uM6O2Byf9c4dnMvokF7tRQDwjcXv_.EJsWEsJ4h2FNWimb7dKe2mXr1tNMXk1PHRGHWOExb6BsNLJaNiY5PAF6sTtMX4FbNrcTN1_VC7NJL8n3vENMHAg2Su5p14rt5r8.hxJGayrWcPHmI9oQIsi8_5382AXzYW9aqsOLbVvubobPQmZB0u2B8DQoRmgV2tYESgD7uXkck6P6LnGN3Q62CeIURZ1bkGCDYVVCZomke1SNHBNhg85QZyWwzuuYa749C2AyqFdnYQPYUPrk7_Z4RElV55oMVzKOLN3LJXB8s7jRRVKqArW7mmILWTtGoIaL1rr5RNSayP4GszrL2RVN8aJw1zD4.z7Q7KlYlR5aKOWcmDjMtwQccle6Hd_bAhBrFVd3EbyY_gpejyUqA8NGKnuwmprXkav72Ot6bxTHJRoenh0.rKEBsVcvkmcfyFcOQQ81mLfmAjtK3MLEeJWhrBJeKvHqLSWaZ45Io8HRVuoL.qAIvmksQUQ5GOjFtNZ.1d0bnGvf0eBiaXnB266A8JV3VA2UPq.UdVoUpzFgICi_FKvD.sITSD417_H.MV3iOrpd5vWABzYGQLAvxisQl_0vDcUNQsHzQRg8texN3xFqtSZOezQts2lFTqwsI1"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9135ceec2ac33dad';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, "\/10013805\/json?__cf_chl_rt_tk=Uyue9jT5JW54C2R9fFa8r0OZdPgfhnCcD5_3HZcFBr0-1739795632-1.0.1.1-tHU2Dv3dB5LutL7SRTdN3w2l3_6ExnAQzFD5EbdYYO4" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>