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: '9134f9953f0640b3',cH: 'yxqHjXGOClk.pSfCKt0Eb7dUU9zmWkXJlomZ5oYx0mM-1739786893-1.2.1.1-lZwbyikUz0F1GyyzKzWRtJeQSGRYcwZZKZR5VSWCB1J6xVFIeVJv73sEXa7Eiq_m',cUPMDTk: "\/search?q=Peng%20Guangya&__cf_chl_tk=NbFa1UB2Xf_TNEw7eokiNK3_MQBZWHcHZwoxZdl_SVA-1739786893-1.0.1.1-uDa4CcvfYOhWpbNO2pOh_TAOX1_d5xoGVfYiVNtpap0",cFPWv: 'b',cITimeS: '1739786893',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=Peng%20Guangya&__cf_chl_f_tk=NbFa1UB2Xf_TNEw7eokiNK3_MQBZWHcHZwoxZdl_SVA-1739786893-1.0.1.1-uDa4CcvfYOhWpbNO2pOh_TAOX1_d5xoGVfYiVNtpap0",md: "eMKYNlljWexOnMb3m5upssWhIZA490KuX68XItHH47I-1739786893-1.2.1.1-DL1xgHkv5lJ8i_PxpopLRzUt47AHZWUwnlUEI50JBLHlu9RUEaeMDASwF7Vou16XbS3yjxUMIRLrvpTmwdtunvV6wvSMA0xH.DSSObLHkVCcKXXrvRR58ShDj2uLk425_P.dYl7V8SJFFdoswAWIBbC925gJKkA2SLHR2pAlUNV6lDa4Us8JVyAE7to0BKr1dvT25AsGPV5DiJpJD6pVn8kn8nrmW36AZIPzL3RbB9Lzsbaj5hE6jYQN9O43J6CANpbmlZ_Sp4UBIaqA_qg_XYhLTrLd28QnY_vj6Mnhj9c7k0belYXAsKHKhzNCtI02JvLwu.sZ_HZ2XnBFiLws4j76d_5uyM3_ZkjspPwlq1BzQD8Q84bCkdQrStp1CKTB9xdmwasvYdGYsFcJxbg.tomQNbTYitSChhFFfUeiYiLXA3QWh0zkrm6IoHvXcmx4jdQyzxRHro4yqo8gpqtbx9BZJ0J2yvQHcAqmq70nZZkwhqwx5hm95tmylBNyaKlnE4z1JUf0GmmwwkO_2FEPxQd97X7B0lu6e3Bx.WLIQHHcSQLeFs071ruka25l6cXroow_CZcM6vbf7Cot3IPT_HzkyhUqI4ndEu1uO9tjQqXV8Zymik_ZEnpjCqTuHla.2XFM2jX4wl62CFC8OYcIsH8.BZeelTGGCyYbnlxaDBytHlnZrss2kv3QncrpUoQYfkNFLH4N_k2_PdM_66xaxxbPNDFGuIbvxnIqw64vIT48vC5ZZl1LMbNjR..8ughS1LJBIPXKgNcpYUFXaqn8JCXlxhzO0V22aoZINtbFepkd_H_0B1HIDV7CSRyC7VZPKc3ssxcteN_A44eKNa_2PXLu5G8Pyb9qXrB4haATJ5BbXBGa1lYZDNG.XYHy4xt.Yl1IITdD1mp_yUhuRAdOnEWJU74E0e.1DlCWO_ItWSyyKQ1mxQg3e85gYAqZbaYPaj5PE1yV6pZh.0vFFbz3EzlmrCh3PY8fCgPsDqXReQZ0uiO_2n_xPdNOM9LSc4gcZN9Pl6G2flUtaIuBAhNIK1EsnOJK_Dx0fbKvOtpkCIgq7JTS5Y7E8L85RDGnuM79MEI1SDCYaelxNWFeyAb.9lS4iM_M0_w3H5Oa5rTSIM3w03.X.Cg6BpwhZ2uHwPCIEtFo7vGgd536GoYvUCm8LMk7BFAGUjAzxuKtVY_8EOkMGgcUBCEnPvszIhnsz3CnSCKeKXVdI3hyIoQzzt8x84.BdfCVjYEEVS7LtTxA_F7yRAYozmBeyZ1LF6dwzW5ZJWh_besgRbl72z8ViqZlwHuQfEjhiAjKCgqda7AQN1sNYNAoTLAztvTAZrHU5IrPhlrSzvy2hj.gEoXxtlbghZ3CkYq6GddbZIYaon9fG.RnmZ6TVNRMOCjLUl5fWYy9aSBScWytG1b79ugWNkPGbToyAM4XfCybpXjQiKntD6_zc2XuO1mF3wIazPSXGH23Dmq7ajrwZ8KvrZ4ykzTAU.PHW0pqOQ1aXhngAnh826nvuEGUSo8sbqdVBX6DCWwR0cGGhHNcSD_JAc169liaocUvTLo6e5d8o4IxNTmq4PMVN5MBfAeP2lGFRBNXfLBN9e.Rf2ZGI1nuOZ0JN6PJQwa9miibP9S_lwOiYsvhbGP3UJR1lN5I4WKl4xQNiAUbphij8zho2gP8OEgqFRZNb_..XYlGL5Py14rgd3yXNQORLAIgg7c2KkLjso2ZruenWysSUYpNG6AeyxsSfDu5Kg.0WUlFNawuJxnNvXbgH1fhZmEYfVWw2Wnd1pzGReCYYEh0UROrXZTQSHkSn3LQOhRAxSue4rH_OAdnK8lq5aZDHh2YvG6_ApTLYufUEsyppdsIOaJ.ki2xCpJKw3XnSEJCJDHx7mvv_LFmhTmpUbt5osAHTa7HqqaLO6OWJN5R",mdrd: "8VIfR4Nt1UZF3XQWH9FXL9yL94esgDgqsq_gFFwJUb0-1739786893-1.2.1.1-mejFaY4uiokGg4tjbDkA42Zpq5arGOLwFehsrzFcNwwO6g2srAMLsi_MNfOnpYqP6M5OSwbUWa9TOQ6pEEEyMixusz8WkyXnn3tn8O9647t_li6Eb7vuI8F4kwro7O0zmZ8zcMHsFo6s4FQHHubok.21oCk5A6GHAoz8gVDqemtQl5Ap5eluZ5yN6lTz_uhs8RZSSVKnBOzf0KyzVqnHFz0N6B9tbXQSMYsGqFzlBJVSB_u50T0r2wiGZzqPNP7SSZYIgpA__b_obsw6aFPL32HgxMuylUvmwDl90nEATwN3uN5MB77tNVUUwMS4TqEEzEfhIhaVao0i.eEzX1eju4szcQb1KiBIJ7tTAyJLB0jpdyvfhl9dOBVFpwXX0LxWF9u6.osN6FT8FYp.HiRule.IDoxNBXPEz2PhQ2fTvNAjg_YyKJxQeeXpZYM6zeHDkoC4QrCCYv8C1mYe1tzVEtBFO7Q_qg_B9Gu8UstB101ncp8itPdJsCro1CLoCdaaxFw2qCd_LCPEsNVcKzKr52o2.e.BeF.tjf6swF50UXa1p0AlYTtAAmkH4wl7RZXu9Knmdghu.0LAkGDQFnESq_ntyIB3pdnQFXOfghjriKKISNsPdx2BMWH0XcO2fajQP62Tb.ewUe_XV9vuzgpgKvkx25mp6n0un4Fl1mMubdus8XMUAZjir.DA7l326MK5CxawqZu9V3pCThwwVqWbq61xrAypMJD1kWjXDD7muNoIIXOBBLvfck8gcHol89R7S2iyQ3Lr0d.B.2sQSXz8WKuf.kyR9CuFUFgqiFX8omj7qsc9j3nh1srn3Inv7qdu4.5G_oOQxGv4KZCNPfxxheZEQ1eFbAXBCRTjYkeFALIlfDsR55aBvA3J_1ZUjAwX1xeoQXTYvH1kFNRP7z25Hq0I.7KPulRTEXAKhFzIhVn7WJdi5JqJ1JKORDob82zB_qlokpVlff.l1URBRSIwW6LOjx7lDgK9RKioZvYLL37HZOtZO.uhNnx2Ib0duV5qTtshLSvkJ5hBTYr7bdhvP3Za0PZ3vNyqCc.6rhypadiRcWcE2vSwuNyNxFsqzryin95hi6V.bzrbaSXTvsC00K.alAtw5vfiwh9iIVhG2rAWgrKVlDnsDY9FLEoT.KGD0xIB4dsLUx7l7hfMAUgiLNffSU5UTNgXs3664T1Wz8wLTqOwdNgu7hkIFQ4gxeKZwWTWPIjJ3qq93ijCo.wHv49PXvwN8ATdl2lre8V38GQ63kIpzQuimVBuTyFBRkPy_wzwx_V_kNWc3a6sTvPVRFHgc4vYBgPsGKb7Aog_s6EMelhwQzRLi9S10z9HrZQ42_GRUOtfhp.hLzu6wScomV85UZxuPkjzILMc2fCWSAwScUoZAP3xmxL3dnbHp52vILJoaucZ_36rfiPW0.njTaGeD3xfC.hyMQi2QIbHWNPdf.88UUl6v8mv_6doPP_Ug2quL92CjrKZ3uXKyPp19Cn9.OiUWqe3YJW7C5gF_WynIfKlZnRi7fmW51HbkoiiplfaT0LXlYSOrvdlDweG5e7o0aeme1zgQSlBwaDs6SN7xdrHqfzmCwcMiemWr6SLjRcGv358KkfFe5Zk10_wcPzFqJBhfJsCoY2r.eOFZs1Oidooh8t8zPM0tDiLEdKNrehr.xpt5B0W7s1_Zx_mZaR8BCabsgXVyd7b6q22Mg4j4s64B4jGeHaSlxdkg34OCPB5Pu9gRjESJPvU0Ryle_jpaHHnlxWbSlFTk7CkkIBMm61ywBhAalfdELTNmrmNp7spDl6xIoAHgc4UEeQanpCiYjy_cNnzgXmsMEBeQW9aUQxJBWcQ8RPX_i66_9P_IiWX_a3g6peCqhX8.60sj8Qrk6xgQfAxqQNclTLH2674_ycVE0O9b_F8.l8idf42zEt.UUJIfIZbg5OsbIlA5h1kDNWJwYviLwQXrVXy5TaGqNdbwvyqEe4ZcuPIXRsy.8PY5fsAT5eTHzB3WrUdzA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9134f9953f0640b3';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, "\/search?q=Peng%20Guangya&__cf_chl_rt_tk=NbFa1UB2Xf_TNEw7eokiNK3_MQBZWHcHZwoxZdl_SVA-1739786893-1.0.1.1-uDa4CcvfYOhWpbNO2pOh_TAOX1_d5xoGVfYiVNtpap0" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>