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: '913481fb99cd9cb9',cH: 'PuMpKNjUxc6P8qPclbpcSAfSRk71KrM10nHlRl8tBcE-1739781994-1.2.1.1-g1RF57o9Z8o0hiwwmyvwNnx.W9VVZaLwK392TwyZojJnIihuLHkpEGIJjE_CaoD9',cUPMDTk: "\/abstracts\/search?q=Ahmad%20Luthfi&__cf_chl_tk=9KQq7qFYKyKvdeUA_56k9O2CpfKGS6jpTg_o32jYOoo-1739781994-1.0.1.1-ElTzCkMOD0S3XhSYDQ0iNH_8fHzzaBZS0w8r_p3x95I",cFPWv: 'b',cITimeS: '1739781994',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=Ahmad%20Luthfi&__cf_chl_f_tk=9KQq7qFYKyKvdeUA_56k9O2CpfKGS6jpTg_o32jYOoo-1739781994-1.0.1.1-ElTzCkMOD0S3XhSYDQ0iNH_8fHzzaBZS0w8r_p3x95I",md: "NWf9ih7IapZB1DJY7Fb52PXEiiP2MLc8CBd3XPPQpx0-1739781994-1.2.1.1-ehCkGnf2h.WFV4p2BO_iQfRLmoY_j4aHYeZ8xYj4NLq7eCovzN9XMd5o1MFdLEMD2YcJgQVTE7tpbbLMXu3Zmy1qvdHC2kNQz6naP.3E3G96tFHblU76ihj3JStIKdJnNXvUSZCzPgqlDNO6mi0QXqy_oydDHbkbcZy1NBMIit1qEMJqL8z2.WbHZ34EGASAT7vVJQXvsezIIXc41QidF2fEe5YvLq1ZZ8jJCJ20stRzfW42sn6WQk4ChwmMxdHF_N5yygy7CpqJTdCOVLxcgz6aD2kL4EF1q8Efbv3UnbGZJoGRb_1I_wpvTRqm7NSNyKSg5coSS2DIMGDG_wp_tWT0GOgUJ08uPPR6lNOrbbb8QSvA__kO3KDSNt219DWWMORdt9vjVrzkBLLqoaBqUjUxKyiB3eoC0hobOSY2JVkqf9aD3N7TNSEF9Q49FsZclEgt.Yi8qwO1_je0V92SloudRoQqZFJzNFPDkVGjndVP_CvIU4xdOOvj0z4_8veRPuxmwJo0CGFChxmPHQnR_I8mnD1M2Q.NHmud7Bx.Bhtg_.0myATuGZL13rBSeUNcnRo4bcisusLRTog4M5oMwVr1_qYGpoSSwJx63Mnv07rxJvVh65f.vCyzrE7yPH0nA6Cyk1IoD7h89gXkFVJxdS6MyjGxegjlqfXX3AEA5YQySSycuZv7GJFZrqfq5aZLw6MwTeQCau13goNG4GrMCEfIaZ94oCmlNY0TI2nCx5iM6NdjKCqrp7JLjGAjQZCYauUBo2.IU32myrr4FfC15DYo36gXkO2hhWNnKnN0jX8x_owmeHVRD2tSQ2OF.wkku1XsokDzMyubCN7TJS.ataUA20SecQjBpsYIHIRZoqF2KlosgeJVQJNkPa8kMKgcTt598FZZn5BYMHX_e4G1AHlPSC2Kxpn3d7MmvcaNeHqNZlhcLg6W8JYSSaKhY62MDEtFqZ7wvgpeFyvs2EU1NL7DNZKEoerQbyz0MO96dFOf7c6mfPj_r8y2.mPfxBOxJfb1OE9iToSQ82u.cvYJrpgKFCWUaNuAG6qG8feLMWwS8hRhPSo6EtGTFZtbP9PJUv4UyCKwEwFP6c1wkvKvQxMHJClfK3qOK4i3S6su08YQ3NNsgaykZV5jSk77.MRgCw9fTBjvVX3YqAWmYbFtdgtTbaG8Pjcg4QkU.xdUVhvCI8OqzwftbVFpFYOdkVEtko179woMHXta8LN1ojDHwC1m3oXqx4z1voVwUetBlbOXfWdrhw_3Zv9q8OXYoKw8wy1qgK2UPitzOEMQirghI6ttniTEoeyhXsgWtBfjV2ZJj2vJZsxr0_1s9zQfGgmdn9pwyLoDTWR4PfEaM981_lbhfTVephPpNSrcaG3rHgXXjhOEZkib4G1tpgmFe_9PLP93dNtchTB4h3Vl8d0pll.kM619AaTzmSrJ6iLBn.sjLq1jj7oivNaVOlyji7yc9KNFNFojY8VaqkUhjbEgiIt2IUbhox3gv8r2sMiKGN0dLw28Pc7G4hHgF1QH40xS5142BMjPzJzHfH1S4JaogIy8sraZGSRCxgZqffnxWEQhVcKme4OGeKVicvSZDX60VcxGL9tv3lPb_GBnadRCzHrIqS1WeubxeLUNtJcLMSeqou3Z6HQqdllO015Q5ja1_5EwgKyMTzEznIMzaRPj2pyJMrw.M1JWiJM2o8P4UFRPxydkkkFD93ueiIYkPVQQehdOiJu3QV4jy.a_VssedDyExqrLK47ftflDBipzZZ7rdfN5aAxo_ocTi06ZldX7l1SmpzKZ718Loe.9BR2WGjiNSOsl669sbrWBDOfU6CMxbDSEAWpweikAs9mR28TlG51MLuntkD.SGjl1yxNTJwmBW4xU3TG99Vvy5h7.4RjPiftD_9kMYE.hXaeSzdeI6w_RPPuQuxZjTQHbxzCHHMQrHAbCA0d8oJ5sooxH3ZE",mdrd: "JJ3ibkUf3Dy58JHEGVjaEQ4cYgBoqrm1JbYBqvceGY8-1739781994-1.2.1.1-fj6IDd3Fqzta92.rJl.yVAU8v7QNtYeOnkfTIUmMme9oUzkhz5dX9sITeyohjKSIiAY4GIaCAXpToAVe6UbQ2.XX193TowE2b4EkhDUoG.pzp0DrWVbggtGS.pzPvNvaX.tR7MO43XgdhY80Iqaq08htS_Ps88Nb3LURGHRJq7sudLOqUx6PBAUQhU9KKzj9PaypR6aLE2tssMKYYSXbRLBMaCb2HXf2ms_376hPduo9xeborGXUW01vuiaIrc8Ki.wuw7wkyx2.HLcyGGNsoURTW.ni_naSODFYenolSJhSsE9RFSBGxXWgirto8.tA56uQ6h68x.WrE2HOqziK1hvXO4LplsZy1auJ9VHB80p3TO0S7XfZ7UFuyCsnlQ31qB7.4mVoMzBH08sLRKMn4LaVdE4V8tnHd5.3N7iAVO2GJ9LJAsCue0Sxr3Dc92rrJyMeGDtPwaeFknsmbk2dTPGiT3CHICBj2F3hhnH9rPEZIWZE646RMP7L.fPo4jFIXjsVATU1RqIXDXkmsOlRZXhZSeury1wSWgFqzOI_zw_nb14eB71MrYOTp9xOdqOZkHq6aG4a5vIJkFawrjk2yC7rdsuHLCs4lo8C9YdIed_sqD7GqpBOu5kc0D3yZoONDl_1qDMBj9prB8zI7qSaAms_1RJJmppctk7S7PmAZOkXeDUK9vaI3pWtuOiGlL187LfmO2lPiu5ansZ_dLQOkvy9KJqROo7rNA_.bPr8FeEUhzpRaTuLGXH2WcBdW0ZZjtv8W8161sZFsomBL0.QiXYRH_UPNI7e7NsRhzoVoUvY5R3M6RPiPmWbz46XgT7YezQkKHKz6MO5YCRvxXt_vTDN9rTZqi3XZrFSat3tNzR8WJSoSceqmxjD_2AV2FSyp714XSFrckHMu3kWOAWPICGUpjBQeRoVxjdGH6AqUoP48_V4YDISAk6ckxnP.gimkDeVal1DCcx5oiOAx9AHPEe0yRfratZ7nBqZ8dBgyDspB.q0CxcHyTLGIkBg_RSv3a3i4mlp1GlAod04UUncYESt6cHfZEDQbNCLUnb78SjKfQ7Lit.uZitHu._JZ41hCh3mWo_ptgCPYz97r3jmKubLG9axcwoRFfe5ICq5WOYdwrZxrfb2ifjei2gGGpgMzkmqzaoqAgSMQl9mBN6p.FMsFti_AVwTQkl0u7ps3Zh1TlTS7HV6iU1zVN5f3XvSwxhLCyqQ5pZlmoTIGXWIrfNtqqBUKJKsXZwjpbO82j9HRZGVp8XeUuouAZY.Tdzb7awFS6LlBEiuPcJme7..4kzUg4i3VTKX2uptrksuxPvimzos0ZzO15Fmkae7WUypcWGbHtgcY5s94obHC5itmz2J1J7fn80CfIT6ajSVLF07ckP9DLqp2GImeqtZ6Q6G4vY6MUlt41JGMGlKfO2cIMPEm2VkzKE_Yc2mBhmFTRoLd3k6WIrpDVXYaZBL_9TN.FnMtAAMX5HQcaSya_TKdntkrJamrpzjy7C8coF1S.cg1Sx0C5ak_1Wt1v4z7U0S6U8E9ingqI2SRxOjBId6YXtoHQVTGi4rdFSGIyizsXdZjpgndM6ayczDrluadIUIL5K_Gw5rnZSSKGophmG2v.pytTEzo9uaXEEbOjytDutSjWbkc.4QQN6cezHAXd2MOvH1S.UrRtYw2pLl3xg_laJUYW7afc8PLPscZpI2lHWvsc0mBNzahnqO0ry5bjO9DpIdBPCYiDxdpWgfWhHH32Y4VumFNPiZGJ71R6.URwAF0uqlKxtzywVir4o6qB1J9m7VLL_DhT5k1p279uR2u.MZjuItshCLy3Xo2V2FmD5KWh0wpFvtFjsKm09YBCdWYhvZjm3DuGFicD_pyx3Fb7fAQlYHBZhIsy5NZ4r8N5me2NrS4cpOij0ZC4NnzaIJOA4BFHWi7tp6kCK.TZw_Yel9Y.tBjeWog26SfUMhQUpXAi3xFjUF9D1lcQl1ULy4"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=913481fb99cd9cb9';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=Ahmad%20Luthfi&__cf_chl_rt_tk=9KQq7qFYKyKvdeUA_56k9O2CpfKGS6jpTg_o32jYOoo-1739781994-1.0.1.1-ElTzCkMOD0S3XhSYDQ0iNH_8fHzzaBZS0w8r_p3x95I" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>