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,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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: "waset.org",cType: 'non-interactive',cRay: '9134ee2e2e28a042',cH: '0Cjh8hgWu2flR8FnmU6Tth7GPkLJOmZDURJdiexdJlg-1739786426-1.2.1.1-YMRXWkDxKtYqZim9DfEV2t3pVlW5Zhwni5sKscS_h3OIrBSeYpTBElZpqGXr7.iy',cUPMDTk: "\/profile\/registrations\/author\/create\/2012\/9296?__cf_chl_tk=L586Fkcdfe3BSuLKa24Nr1k7cB_lc3TVlHhpnRMgEr0-1739786426-1.0.1.1-7Us4ipuGZ3tHg1P7mYf4lcArYxFmTcTgmD_MKmr009Q",cFPWv: 'b',cITimeS: '1739786426',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/profile\/registrations\/author\/create\/2012\/9296?__cf_chl_f_tk=L586Fkcdfe3BSuLKa24Nr1k7cB_lc3TVlHhpnRMgEr0-1739786426-1.0.1.1-7Us4ipuGZ3tHg1P7mYf4lcArYxFmTcTgmD_MKmr009Q",md: "T2751k_IzSDLjiM754xG0Fcro5YXryL9QXZ9GN2HQlw-1739786426-1.2.1.1-GRXVykSMjlKZReDBeLg1EuljN2ru78jSB3lhPojxEE9XGbMbam1bnzkSC0ptqM2aKeINvqYdxrNV3F8ZYaApKQ_h.7oGgPsDHOsQjujJiyCsVh6OdeXWfHxNT8PPEkKe4Z6AArsDHnCSsavoirw1RKHhY_HptyEw95Lx9IRA7De5DJa9Ax7.9pZuIwvzMCi87JH3NV0.tkZJuuzrcOFN6EtIvc8jlOMcH_yOanv0P1our_GjbaO9ZKL7iZvidMOKaO4JBP7I45dozNAzn1HyJNXRN3K6lPmMPTYPHpmzGCA8yj1USuCbYggTa2Nk6h6CbyB5TFrM8nKgtHcnZwzpj_b48RXrzv2hbasQxqc93G1o72G9eMQGrJbciu1Zvln7ZEcgFYP0v4J_Ngv4VhxjvqGZtb4x.wcEj5UwutP8Ww07JefmUxLCDieG56gkOVv73lkopJlZKSQsDfGmSfcM5DyZ0cDUClk_EuSRwECPc5FcJz7uU4dJjKfska5mFgFShGyQFUJncdInAm1LrQHtsuB3QoQ1ziBE7vMsVgLZBpgIE9KvKnEg8DmDCAE0RvSkXlWkdzEZSTn5IGYptWW3jhx.zS_KbCtwdQgdBHN90QAMM303e1lDqAI76yWhpvHUkFn2nxpSi4He3GvJWxcNLmgU5hQXJPgYPp7gAf0TYN1V1MpuaP4dQcC5Cphf4.lET87k2bCrD9xBnrmw5YyNUA2MXU5Tgjw0Cqa6taXcD14K3Zqe39pccnqCKWafeuiUyCjVjkjbIfAmIgzNQLH3VSh1V5x.DZx7MsLZhYyXpPc5OY0D4W84DeoUl_XMiKBehhO0GqEM6F6coKQ0EH4eO3OlxqGScDVMXmdWk2dSxhu.mKsUxCsILqscZiGaiCjVGtd83Ihyjr0wmNu2qoKcaN12JmNkX8pF2fy5Q8ywhPavNb6sMOBAKGMMQWmU_arI6ngyb9wXEEvXF3TC3qynEOHs0YwhNO27rxisuDxJ_6raFJS5BLe0jhCJBb7p1AwfIo18_BULWwzAQvWK0.C1jlRRmE8Hj7JdnvlfmgZaMTCLeMGtdC9msk8oBE5b8vWioRC6EzppgYh8fuPkFS.iRLizEcAr6hHx6rqqaAfK.YIveVBm97x4aCxpKTZD_iZ2A8jr1I4W6SqKx9r.vkubS1NWLSS.yV1RTAf7hwkiO2bj02hhwcABnHFNzJ8tR2xkza.ApzSs_klqK3F8FEdmBFxRsyghus3qL2TzyZOE7D7EpVhO2oltiIZtTERAW7Ik_srPwroSI.qMAzCaamwTGcr5Yas2.0ElLAEhwWTRbqxUUd_iXoZFR1K9Emc_fCFo50S4EshjHxSzMpllqv6FqUz8P_lilImzZNiF02P67LyZIFf20c52M.fyZ.p9U8Lrn72ccLNvUTsbSh7e56a23waVwqBGtDNKkoBeqDsEloiV8xQnyUD9HMJVPjvax8XlsBos6U9KSyvbRA7J9ryza76YQSQd90WGNHvG3AgQYFeAHzibgdBoK0B.YzqDd04.PpGlW_mVrXbVf_cKHfYERNcH7volodwpf5fUU9xPHkLHojXLcIixbBuWUYprR7saRXI.dCPGUbX.rapnEmy3eynaPpg.ClPegrnylkIANIiDw_KWAQ2BfNyxSdrQwRVYDZJXOf29aogdM0LGVWET.VtLsL8x_2MQz2T42BiHA9VWBYVblF.Sbbn0JVNrWsU6hMlWyZcEuGXbVmxKwxNRve0ieMLRc281AQh4AqwXVxSzp20WnC8qAlT_v1wEzX7dhcnKxPeEUdh4MaypCV56kV.2pNd_eG1oxFX1KUl5LHGDKwzDYgRzz_IzPSmRvYboLGc0cNvsejYNAKLyBpPB.9W7.by8RU7j7jzi2as6C0.dC.H0rNSKI_D89KWg0ZEZ8OJFW62gcademqZrui3493sIpw9hlTgOBUe3p_dZE38",mdrd: "T0dOVfymXTWvxW7X84W2tBGvveYKHwQ2qzybXqQtrnI-1739786426-1.2.1.1-qyV6tbRvJ2JAfQibeDpOLkz4jLBAISIOSFhfGiwuXRf7c51g4KIva3eyAHFy6s8eCeVXDBNUDHBRjvy8TOeT4KViwii0me40IRozMuNTRrCDTOdjHhXTI8KPd0Pwtqs0uIk6M1HxJXpRF7OoF_sPq77FGQf.OCvZBcel8klRoKELgdTgWZfwLlnN3UneWT4IbRUpB00cnccRE4i3_37W8GNUQrrBN.EpmaCyKjtMvL4bZjYZ.UHyEA3I8RtPrYOPTxPW75SLKX4HOXxEZAOj5o6usWzh163hDiPReh48ZvQ.96YVa0HM2Vts2WEP7C185OB2jG9aaZMK4WcvozPP_1cHx0jmeSP4IoeXBu.Eu._gx1kFBp4gli15.5uvkFHJDFS44cBhNgesFrwYE...EugL.UvsWZjkMHsVYXbAZRODJfOC05wOwtK2O17eRgo7f.wAcsaFzrCsfYytL5X1OuC4Ajck1fbzZrd_13wv3CJ1udI7oOmy40rwqlfPXGNk3y12_N7tTcRVvGRnwbwyN9JQ8AImuoWEyGxanPwWNA0e5HfZB4Uj46iS6mFHYSsWjIQa98AU15FoPdGiJo_4Y5J3QuZNyRVBwz5nVdAZkz0bz1via9Y7rZ43GOfdyA55_lYLQGIqkpMihPiu8q1iZKIWIeUmYNHvp_esLs34ubmf3yZCuDIQw5lmNEvkMvc6T_aqqG7KVSW1SA4IALY4dkJV0gPogLmG5z0uvDE8IQH275ruwnZct_rlzpaQMLGO3.QL1SHPVmj2itzqnJ_DiPj8j4JYLl4lOJC9vVXJsSF3xPJ2pxZ7hD.5i63_JqmZy8ilurDgFAaAZI9xRdDAGuX1RxzJUHMCo.NC_4diP8lD.tvXAvwMBRksHYwNsFHxnhxbRbIIFm8VVEPme_yTPG.uSujCpTc4FOg3WekbcYI4Q8efNrpK3Oz3qYSBOXuApW4l1kYJiEfOM0uDgjAFWTTWy.0Ih49mofrF908jQeevK1la2Bq.0w2N.2_W1p_RIU8WkXl17Q1Wykj3xCjbxY33PyyEWim9FoYokbJ5saX1WRG4tgqfE_m.7TfdK.tDZUbxzimwl4ZM3oB59fAu7YFmwDruJUzeZNiEXVuivZ0y4bfetjUh5zmB.aHOGPkHqrghh.MZk5rENjKKNajLzw0yq4CC23czrCvEY.wlSiwbxKGCcGJG9Z9A79eOb3WDJo48IbJTW1.DBpF.ueJV2pezdFuwtHl8JsZy_7V.aThH8EvC0.69wEJc9Ry_ZwOJpEy.GilvtG9KwcVB6v7escU7vQqjlPG.PxU6WAr5jE_R28VkOVcgWUDcHSq5NrE3u52UfMYONVw181vEx4AkGUH.jpLmeK1E1cAwZAzQ0d7pR2L9TH5eYYhU4deDaqZ1y_EEtJNk5dww29dajmIv3px8gK5eV2ne2fPlESFL734u2aBi12hInPUlum5VK0Ok3K_XvtEyqz8rYq7pp9EtDFywoCriDI6GZbDbNWFpHJQbP7WC0a_teFVDiCR3nCZzM5nxi6MqNAuUqLvhXjOHUqGKawEbMZrbZUxznr4Lxd0u8Q5_Q7P9Oqepqq81sKtFbPlu7LeM7DhuoQ0OC9b3PqcvcfTyhHPX5q16K.tl9oGy5spmCot5Q43cUf2SQWKzmleTA.aKwlhM2VUMp9Qud_RZjHLxEN4lipurALZxthxpOBCHcZGRlLqqKGu6QwaDnU19_t7wJi842eKy8T4Ss_twrvwz8xZ6OvvH8YrW.6N04CHVGfoHU0BvHA6QVdPd.wut1gxlVP49sE6lqQpUIdZGEIevrYp5ndzR7F.HpzQ._yfV1TZsoIpCwAkabHbNHUOSNZC3BH.Jtff11TU86_sU907TFKTHdgVAujKQcCUdu1OBfotnrxROYF9_L18LEUvSObMqc9NmauW90xjTOwiwiRyG0N7ypiqR6oH5jFA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9134ee2e2e28a042';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, "\/profile\/registrations\/author\/create\/2012\/9296?__cf_chl_rt_tk=L586Fkcdfe3BSuLKa24Nr1k7cB_lc3TVlHhpnRMgEr0-1739786426-1.0.1.1-7Us4ipuGZ3tHg1P7mYf4lcArYxFmTcTgmD_MKmr009Q" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>