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: '9179c049f8915cd6',cH: 'LvoXznAEvImf7XZWVr3OGaYitjszytxcWY.QQgmknYM-1740508064-1.2.1.1-vKnmG_ll6qoy6xKc_s8Ob2_OXV_xLUb1rMdlsA2tZEFYFsoePKElxssATeC9RSNz',cUPMDTk: "\/abstracts\/search?q=Jing%20Qingfeng&__cf_chl_tk=MHz84E8q6KsvWFdr.0PynDigFnX8s52C7L3XjXL_hKs-1740508064-1.0.1.1-C0EO5tm1.YXk3JysfeglbRhvnzbG251CZo67Q_Tpn6w",cFPWv: 'b',cITimeS: '1740508064',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=Jing%20Qingfeng&__cf_chl_f_tk=MHz84E8q6KsvWFdr.0PynDigFnX8s52C7L3XjXL_hKs-1740508064-1.0.1.1-C0EO5tm1.YXk3JysfeglbRhvnzbG251CZo67Q_Tpn6w",md: "7456sW_r.GQr8GIbM_4.0fjjINyxxIXoKuCEmG8nBqg-1740508064-1.2.1.1-6n_vIfwUSa4UopyyCToiTF4tfm22PF3HVMf5nyPzwnTHVEk1hP0WAPNGXMSC7Hh92Wr56WGeFU7lv3G40jMEZUOWErJ1Z0rDz2KsLfcYd4VH9sr7d4lWGLz0A.DXFl7vVUF96agpJWZewIOhbALL37IgoSbhlvrjZuJEEOj.yJb3UomGIMrtnf9uFFYzS8maa5FgipCqTFcWLzxvMb2547_SgcZfeMT4POmQ9OdIBcGlroHKT9IqqpAgSv2_pBO9Hv7iHIou6.wLI3aAKZwqT1qYblvgkcits2P9ulT_7a0Gn7gCPbVcZalDka3DAsIncTb8Ko9VIweJyTbMrdrMnUzUk8YmGETYZJjJg4AtTuKVtzuYqBIKuknhyTQeHT630YCCmTDvG9ZGJFvkuWHTIRr9oEaUzXHtjMYgQkab5HMBKiSwEY0cLx7XjPuQW3PMOkeWQ9E.oEdPmwW3j8.aLbDYocRGk.ITgeJDZ6iT6bGb2LtmepGxzXtDuiCOxvlfdUXWFosJOLaFwMCtVGaa_iQV.poBfokLxfEee_VGHnTKkK33a8h59xqrM1Ji9uBU7WZZHIdEQLG93L6PDCwMSiyWyhFONL4MSRdUAT44IMukrn8x.wDj1Sx96OiedWYIqeSkeJuasSnCA6Ug86QhrylufUhcRAIcilUCo6q.3CPU4IbJQsyoeqxQjexXdOl32WX8D2Qgwvf_VPQs1V3YUkHMqr_eycFYXdwZyd0Dimvrlia6mmPgLis41edcFgIJj7oKKV1MSIsx91vqXHPl7we2RZwyriLtvqALTnZLGH1u5chDO4sYZzoR8O0erRaxFDTxDjKX1_RjUljmV5JR2MNQkKGVOjsXEfS18Q2aFfbNsv7tUouHLRKYbKd0byobKHFNd7yq8pZo6owyClY3pTGTbB.wnJHO4wNDUZBWx1tygdWKu4thCXHEs8wlexV8.d6codAgjJ7HsFHMcGKqN2Nj5pEgyqdHLkMiY5PCeANWM2vy69LK8X4M.S5JbMiDhfL8_mjPOfhQ6T_A1vttJeieWYWju4MlO7T5nM608kBKTb_VPsLQ3SGuDgVCgizNGdvq92ZQU.g9fdESTs9yv_2opTcqLXijByZZ6hdkweORn.7eog7AMhpMJfcWZ434_cPgNyLoL0EXBZbLn7lRdFkOKM0BJLF7r3mnswlIoWiEIj8czCiVeGCTCUTDwQl3cEhoe.48XGYmtiLuEmcf26ULkFTTY_NMDsFhQzPX8ZL3lVxtxdih3LFVXb96PUie5_RO7LjeRqWbczC.OIq42eKWiPKclywJUtZVn7Nd6tMGjSbfVXvpitR_p1H3.KWC22wZO508RSsMDUM_3DV4AK4m0YOyp4XcrgPKjzdKjb.PY1yYIVSVBKJ2DBHA2.EX68b2picneO5B0_h5EnBo5kpdJrZi38dri7vTKxm0GhZenK_bn0sQLS3hkrOF3z7gmGfSnM_wMV8x7yiOyOAqnzUq2ocb3f9HOlwp.7VH4ySBWsKDfHea3AF.DtbG.Uzdgkhdlm7Nm.hVflWK1q7bPRRk6BI3wex9iRbdPnUfXOUJ3RX8r8j6FHQgvKvVQbqWP.b2pezLhQB_kHoPYlNch1Qex.syZbQM1_eN3kcO63YB40cSljBEmGjKJHNLUlmqLTUJwCgCRWdS3Xq7bz3tddb13MuBerQj8HUhBLExd_Kdb97w9LHZkDGHcQyyfm_i9QLgJqVWAJKY63kNWT9s3VHfPd2qlQOlO3MvlOxVkPC8mTjnfdXjFzckrVDh5I06GI35wR4jGcf8XCE2mbH6s0GtIuCd0NYJAj6N2aPgIUYLBCFKQ3WBbb.vv6MfORX9KI3Z80Ib3SquoSkTNiWLcMjbso7lRP3NwtEG.E1UQhFRgrIdZWU1V2ND5uyXXLrlb5SdISrBSowwteWT5zvz4zbPf7oO2A_SQgoG2rUaB3M",mdrd: "hm1LhOpEDVyrSCpqaeL71MyM7AbWUujXWNe0SZKc9jI-1740508064-1.2.1.1-kuSyNmto0Xzyt8zAwyfgIkEVgH1VtLouE54OgTExirq1Mzk51tW.z_zD7brOxJ6WY_zOlNTbQkUhH751Hc1fy0g84pM9VJEU553RAqRzvLnl1s6Pqz.KEk.VMCbe6BemWpR7eUmEFo9GnUBNpACaNyD7yjZ9_kTQyHdQZBBxuN507cRbPaQ_SDj.l0aD0oPRdS5D2ootYyZESOWYqCNvvdoZrCHBMcH_BLCjKqFEa9lboWmqyUxkZXOi9j5bIbR82BoIJKyHXvRqG2ZMsP5q966un_x6BYjCbvdfPqE_kWTmbbrhHcMxUkkYK98T_RM4dyIt.tlG7kY0RpaIqFwisGgS2ASaPt1dEeBRMmpvb5K5ljg6SlZpYKr.GzB8rVDMe0DGrb3gQ8HbSDjuxvivHQrJpakrYYBM1Mu.EwrY14dfg9xz.KY2bhIu.LnTZqbw4_KX0UV4eNgf38vGCjrIMOIokNPdSb9r2nn4dMCKx_5t.S1BMZ0AcfoFYmAejYBcQkVw39p87._26xue_W.QbZs6eAGXNf1OHkWeFoiRhNXS64.RjE71Z5yfVw3GiAb8Kqd0PyZIBmdMT_c38PUPDC3_op7CbQUlmD4Anr1llHG4sHqCoef0S7tGCuJyk___4zrbHXW_.lga7_9K0Wq3abWP3n.4MSlTPtZ1ih1YphXsxo2Rm1jMW2XLheb.zON2aeq8fI8w9D1VrXAKoORr18ADp_caF2YA6UwYVHFsMrE1U7Zd1NSTm9hXj.2pE2rXu9IdRvmluADkfjj2zAsXB7FqCWMyRgBK0MGosqaUoprXg3c.bmzIpfqarPLrnwg8R.gk2uEu3gYaS3UJorJPwZdRYWqGXxsMn8IwUE0V.dHQpIaPXZKnWuVHMpijwA4uJREb.aGuL_jXWU5kP.GtNdk4gLUyEbS1UBOiGgcXN7Fa_oDVNBzSkUndgx.Iw9_4cKHif9PfXOX7qGguxRAefoGqy4RqNacYsI7j2E_3m.kDKeDInfPSsN9F9IGnE_ydSrlJgB_puP2SdXDvze5pG9W_dvus8OUspwdeboZsdYlqLRk9qzURiAfGipqhbzzN9yg4ix1tcvAr16WI.QfLv4g83Ajf14JrKg_OLRHFZKOvcC09qtoB_25usPXt5rUlrjX44DPRDPRMKyr9W_b.ttYT_M5Ii4p309tKbhLWcq3p5q1wCxNFPOV9kWibGAPLBrMBMr4Xf4sKxQdzdAWrxol65BA4w6zMzZB.TBywV4UvTn9dlnua_5NxWJkVnI1iyHnvBI66auhA8XC2FnsT7eliwHFPI_Z9da7yMLmbSGCkbFF6YwUmnkdUCkz0laoDjIkvRtycx2LucsGpQlVEpZdcBYfGiwcb_uRi4tRqBgwuSSeJp13b7GBO9r.V33bWJnHg_oakb7dF_wJ7WAd6CZfRsvg5UBy9xIhjHGXIS2eJuhTt0jF0bswvlMd.Ws2MNHEaHBuKQEUDU5b9x9STRxgVBBrHQ8Ic4N3C7mKTa.UAGwRpMr9n3Ioi_9yGvC5e1UsgwK9BCznDeLnas7t2yeEkjjHvymiwN5mfKkF7x95rf8P2XxfJA_WJjSYQPDfQs2g1H789WROiZmao9ckDhNWIVVGajOxCQoYbSGkEDT9CbJPOXUYWHY.1qeh9r3dVGHVqUdkgDAxadZN5chHut9txLW8QeFaK1jqGyS1VVOc4uAHSVMgrfYANS9t4_kOO1MxJWNsTj7DdzeRFwjRBvFQzJZp66xUnlnOnEye0tKMf3ZQMfMdD9gqUkhqGv6PH4yEgaPKa2DXm.wPQu8sM2JjmPIcrdchJqnxcrVdjpOPWksyGeruglCjvmQnIOoOEiOLizq2KSOzIEGLdQoU.FkZXZAd4qbQ7txm4O5hGNV5knabCL7E7OkSCg3AIFFhb7dENQjyiioSW2wJH8Yd.7HJSl8k.W9wFhnsLArbiyClRqCYARVe4Vy5AOZZ4CVEY"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9179c049f8915cd6';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=Jing%20Qingfeng&__cf_chl_rt_tk=MHz84E8q6KsvWFdr.0PynDigFnX8s52C7L3XjXL_hKs-1740508064-1.0.1.1-C0EO5tm1.YXk3JysfeglbRhvnzbG251CZo67Q_Tpn6w" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>