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: "publications.waset.org",cType: 'non-interactive',cRay: '9134095a780e3e14',cH: 'GSIpMlr3oZQ89bbNlcMETJRv9ZdFciuafPP8_HPq5Jk-1739777053-1.2.1.1-SqfZ4v2L2Ji54pZHcnSv3BWGAuu6_bNq8LnZ0NPeAORFD2jaq2libpRJnihijVFi',cUPMDTk: "\/abstracts\/search?q=Heng%20Sreyly&__cf_chl_tk=zQ84.oD2sSNpPV8kg_X8mIHyMJv8iiwrEpxYWXQb3FM-1739777053-1.0.1.1-tUegJTPeUFeTfTVigXIkTxMVtAW1Jvo0H42GV45_d1o",cFPWv: 'b',cITimeS: '1739777053',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=Heng%20Sreyly&__cf_chl_f_tk=zQ84.oD2sSNpPV8kg_X8mIHyMJv8iiwrEpxYWXQb3FM-1739777053-1.0.1.1-tUegJTPeUFeTfTVigXIkTxMVtAW1Jvo0H42GV45_d1o",md: "no12EH2nBFxZA0ph67Op_0sMl3lwrX.VRthKmhSnbUo-1739777053-1.2.1.1-JAI0UVTyjPotKfbBzvD.KxGk9Ws1IvuShneIQGNEH9uv8Z_f0AEmva469N.2puPGJRgU7doelQmGSjjFHhXNOv5csd6UYKu0GbcZu47qXEOmiymTUOP59oZSqC46rYLlOIfya8q4HYanXrIA2f2YbAY4CUPTxt7Z0tmJDXFrWW9lSqOFTlEpfXCqg6wIE39IRaxuMdQeYZt4WO3oSUWr_ffEq25HYbsNfdc_jlZISImXTwYJ2T18OkluiMGVCUbQbR2wPHjBj83TrgNN2.lFex50m62INiVzBwWt6UUUCCEsWa9j3ZYYKSGuN45aHvkDybJAt.xhd7xqCJo8KfFDoVj..DqMJW05XeoIBNdUwNCMTmjOzjmUnmNNC8ftutMDa_oSxt9U5wRAGu3JWLPiQprBjmbfW9ZKeWcAQlevwUk0Imulu8udxHCaIphc9ciZ1M9etauJhTq67SkMWzVwcTNidFRaE3LPt65IWutUfSNJEqATbo7LRsnEiWYXRcrvKZ3TYL6cZ5rpcsG_yUOJsLLOExWrXMV9DDOaArkjVOHlL.NPUJVHkoIrRx4.xSc97rp2CA.IBRuCjD49UcXXxeHnemYLl9DiaqWgVF5PgOrcLteCLJRpjxwh3qdXXm_5F4Q0RYH_fUFD5MVlW_rAoMF61f1fDIDYRDLNmaBupNeXhhy130TrKlcZJxcpBdwOKMZlIKMT7.jijloP_wcFtQQDXMZQ06MGXfeuGuX2tpEHEI5SzHB_Mn7kBlIszJRjfPLwKaPhB5az4wYyC42F98N9Gn81M1P0SWyr06uPBW6Ry1rS29noR9pUF0TQ_Za0vssaglkcc9Rl1ElohQFbzXwJ9LTF5ZlJ1Dq1rEOI9DJkiLqaNNnZ4JVB0s8NC.uBfy54jwIvg1PILpZ4990pKzlwsS0Ku9QiAarmiZjZM6rB8Dq5Hi5bo_hujf5rNCDpG1lHzrtAFE4drp3UtEVaZKVUtVz11WB5geJaRHkzGOayVAjUll6z9d7bFTD2PctoJ1IJcQyuY97YO9mBsuzzue6JpkbitivV8XSTcCQtQ0DciFG0v_abeMAS1zCb2dgzW_a5PaAUmZGABNvLNVU.nL5NGUvnklPpo5UO9mFL7MzVaKjnLv3CwXfAOSwWJOz33wG5v5UVN61v3FqRwIrRdEad5liGIDS54F6dAUqRDTiWZhiZwN623l1c4.l61RIQuYq17ozOp8j3Bii3MOkb_a7HR2pK2Hvoh5hyHHShVSIsckjvCowFZ6trkV4D5_6QGJkKUhLtZ58p_kgM.UjpQpSBmH83KnWL3Gx5ZB1o5S8KwZT5U_0AwdDWAcSN8qH3yWHLmoENS21Tt45.wghUsEzwh.hwXuGqe_fS6G6loOCtF1Gi_0tjhgsqsPCP6k64FcpT.17ZVm5pjBJhopPezVgUodm67BztbLrJnNTGdmZm5Eq1W.b8.7MJlQJkMEU8GL5XLiQARQ5Qhb_SVlYkyVxfqtZVmuchx7oAHjJlBJ69l168GUt__VupQaoqDvFnQeUckGiiIt7QePUGEl6DdXFfaz2BZErPNxlgZZ_uwAU95EX40tK1Xc9M4ovPhvQrfwdGDx3D3Po2F7p3HmUL9SBGa69CLnHkupxnESpdC4cnXTlbQWHt8cM5Fv1K2UlFNp.sn4mNt9.pB1LlOvRw.7Jm4CoGXMMzFqV1JVHLYiqNx2NcSjrOqTt7zWTnVrCWGsEupPRfscIoQxdqSBjkq0F0xeqc8Zvf.9qJjMb8OafE7Fo6uPwBWFQRlbkKNBkGRiFZ5tsD62JnEY7Hd5tL2YKfT1hcWIJ0__KsxTT9qjk3zU3_2Hp.PCQbHtN8NnthItg9i9h2tW7BsmbrJ_yq7vg7.vrXfQ_xuKsRLihcabQNqKIxc9JnNQnqQeQRMjTHoYYz4DLnvpuu6Z81LQRuNR.pA7MiDQZYuYakfKvXhoQ",mdrd: "Bw7DNuM_T6stcaEZxWdwZPHww1ekRSVnQ5biX6olN54-1739777053-1.2.1.1-gF_kRcyQRn0uDvDPhsZvqIg8F0veAfP4s7j1wV9v6oZEEJgZi173RqPAECPGhUZQNE5BpQB9C.bSd45l5.w_bzpPXewBCfw2PWmbR3WKrVlp85fzSqxoeld_eqNvFfi0robvP2_8vEMv3GyAIppkZ029BpkaLSn1P5vUGSorTRB8pli.66PgB_3Z5hEm0UBJWHNSi_h9IXdKTNyEubrsYl2Bu8gKBsNP2qRLICES8fPgAe4yAVKqCpgP9kmBkO2rZVBq6CxWAZtBSvdxXavl2Kahkfu63oVDjQVvvhbpL0aDju83fUyqUuvUSswDbjcoqYEjSBJLtN1HtYk9HAbs3COiylqmpx09LpBEXeI6sybiTAyOGARAI08W_4isNPmZSLDvMyVgsvJ3XHykUjmYVJ2eHqSTcX_A6AV5m1AhUIWjSR.qde56n8n7wgeKM9PX5HGVdf8qf5.douU4YmBC1o.NiFWVJ3I3j34uGJnPr3GSCH75gAe9PgUbLqu9KQ0ln.IvvPuN7hf47cM.yUiZB2r2UE9MpU.t7VZnwTxU9u6bvtL3yfiqB5jiE2QooAoh7Ishea96SwvlrPIkMJsC9X4JVi4.0HuBGDQ0EFfvPrvEdGYworQdMtv4Sn9dbEvYzfMYgqDqJiPmquhOAoTQc3WEM14zauxJknN86Gv8ngUx2zLh3FQYU.h3Vjg7ValQiXlSn5M0HA0khoxFzrfoXl8NQOPHC6wlApg.XzlRQFLQV9wvB6ZhuwuuWp0K0mPMTnulDN9_3maycFFkXtEDwyrwfVsEdYgjjpD1O0NIZ98lhRm0AD.yDkzaFMjctlZdlATWoUWAmGQDUXEDEDeJ1np6jG5XL2ENF3IBUHnYDpQANUjbzCL6FxnZjQwIvRUyFYYB64GLlnJJcjxyarFouUJDK.BBveQKyQiPLvmZFb7KoudJud4SVD5.QSphULlCkwGEQtAWJX7ydxIVrgFUNl8eYXUT5PeyXe3CM0TUy3bKCOl28DjqQz6G.xLVafgWI.ryXNtrlkQwlOHq9WV4CK.h8bQy.7f84epKnOk8HYvwz6AcWrwprhQvEAcoygyBejqjBaPhQpgbaUqPtIkHNvpo2OhdtUL1kSFgjz7EoK.kkWoP3SMHU3Iy2gBFSNykiCzaip0bpDcfWTA7tk7zYboxPjIxaYUDFqCQDT22l6Hpv8_SOPbpSscdBBb7VNg3nOjYBsdj9oFJL7bIbuKZw5UjU_Isnovq7T1hS6W2cUBSEZF71ECPSnWh.m9_U5mXeaXtduC.ptiZpahW52jLtn8Zro8miRs5wv_5HW2iBj5s1xaifw3BwrxGV6PQJfCJdCwUm6YRyswnHqEuAV1C.p7oB.rNW21CZtWg5SvBsXhdw_Qs4udGWeYdIGJgHxNBBdO8wiDyKtfP.M1DF529mqDc.ELk5dBOh13GKAmD7SOSYPLNgp8fD3RaYJoJ0vq3_XEt1HCnz69KqYvomcV_x_cMd3lrnJnw0XKRTO3SJpWkzIe1EEva5jx0OCJrNW_.jK2uXDRujtEVlVn9KcCGcchWdST.mzbAgD22gK3aTTAoY6KOA9ZlaOxe5fa84AXjm9fjmr.6KAO.S17sPGi_IoNaDrRqLv1VoC5H_jiu9IgyHyQBvV7c20mKVTOm8kmFBAl2LOLJ4d8DWIs0tWgD0Jf2FaxoWKeDcFU12rkVSOw0fiGPIzZSMh1vSs4wqzVcyJn5l0RBw3D2whp_qgl0VlQ4Qvfu3kPocb2o6Z4nGAWy4QgUY5TajrHDC8xNQDbCy9xWR.zcEsVVaFiFDSeihZB9ZphaJvaqssN180dy7rR3hVJzpz354kuYGC1VD8yhK7NeAtktA4_zxCxJXHWKe0xfKZetA08JVNVqVTgv.QUviQ9Eg72.Ghcqh4nnebb1PPuB6j4fCV6.Kx1lQtxbZ2y1UGgtP7tH7GNJlY3hbl5JFr6pnhNqHkgszTEcqafC"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9134095a780e3e14';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=Heng%20Sreyly&__cf_chl_rt_tk=zQ84.oD2sSNpPV8kg_X8mIHyMJv8iiwrEpxYWXQb3FM-1739777053-1.0.1.1-tUegJTPeUFeTfTVigXIkTxMVtAW1Jvo0H42GV45_d1o" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>