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: '912deb4e6af25f57',cH: 'rwVqjwJVwo1XD_ySfZV8.QP0s50xJFbed2QXzGcxEDo-1739712908-1.2.1.1-YE.PA6SKNxGuZyal4fwgNrZuuKqyzIHBrM.A1oGMQlot.tQuBRHSfhWnZd4NZld2',cUPMDTk: "\/abstracts\/search?q=N.%20Popov&__cf_chl_tk=M9mHghXEdFcztifQXGrcUOivKuCQXO7O88G8dUaHhi0-1739712908-1.0.1.1-U2_L45TdZ69sYlmeYA2w_ebKSizE992cw6KsCBVhU4A",cFPWv: 'b',cITimeS: '1739712908',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=N.%20Popov&__cf_chl_f_tk=M9mHghXEdFcztifQXGrcUOivKuCQXO7O88G8dUaHhi0-1739712908-1.0.1.1-U2_L45TdZ69sYlmeYA2w_ebKSizE992cw6KsCBVhU4A",md: "RxPkwaynqB00KWQh4NqsvGoM8ZlOO8..byy4XOk57m4-1739712908-1.2.1.1-rfoWHbvWQqc7PamzXDaFp1nrsv4GiBaQ_A9gZ8FaE5mU9gBBGTJwxNjsGNL1gXwGBNI4bPhUGW7Xb5YkUAM6c38IskuhTQ8xhO6vyXGxgMQuug_9O.Hpf349HS.UibMf.TWUPbtXb5Jd1jfoGI98QRbylJCSc5a8kj_GON5TceGAYkBl6zBJoB65F9acJPIv9JhU9iq3ifPlpv3Ov1V8r9ggtYti0.ahbFTlEIRST_0NxXQEdYRe4kTcDTMmSrpJGJcAleRVhm2z2AItz3ZCtpbvwdrwigDdP1AiEZ_kut9ZPZVSiPu9A9M2rNLFxqJHN3KYw9NUB7596veVrIQx5LhfKKBqNyUhV4CzS8e1KpXJi3CEb0J9uIW5uMD11FDZdWs7L6rrskJr6k1bxltsLklmXY__kbbhowtKOiVndqW6R9nM2tUe8Uzdmyi5wMj2_4E9q9fwLsnCVSDxAztTCM..POkz7Ya.egZvDBE5H2ObLjz7BDM.fE_yXF4nKJHlyd4DBuHYjRVxaSsd40A7lnwBoraH2dgee.WjIm1f5nGGBzORDs6OoSwknxM9G8wSvZwLhC332QVH4K3gFGJg7oXjmUXz.a.UNE5L2Ia.bK3Fmm3kBI57CacslbRAczuOYglBLTRGOt157NZKY8RlaypX.MkD.x4TCyzGKTcg_uDSDmZKe1em.lSFF3FTXA5HT9CYCoYs0VHgydPyjhxbNY8doHVxnC.6zcP3eV0cb6YqT6n8zACfS2oVkM_4NKcn9vN4o03iDLX5_ppjigxCr4yCXN3G2cfOoYJ8A4y5Pu5xTaNiFcaq0BlwM1ubA6fzJy86Pb4c4fKOmhWrERG56zSDZYhS_l7PCo.n4u4lvAmU1maUgbNsJNUAAX9MoLFVLBTOSpAZNh4N.NlS33XXiJDlhoymeOCvhgyClJj3Pnoatb1.Kjhrr1saRpEqmOEP9h6xzQRR3MOlhBuNx.1Ri_Gyhtnycq_uz9fnLYisQBwFx1DGQyfyw40yHUY7sq03iG50q9GlSHuIKZpzbFYnlL0fLMvKbDlIRURRIqKlSSIzmP..ibyrcppzSey1DvDFGCumcMxagN_6DF3TZmTglJ9qVb31uFLWuzUTu3P0FaIqRIpQ_qfwRZ_P5yiiEdPbE_yIB3DTf_gTbcXbkTAHB38yA5TZjyYE1ZmsezwhTagxGb8T8NNAciIHcO4X8kD7Au6tm1nrGQko8y6EFWmE7qVQdiht4ca8g9puJTYSNpaz9PiXCPd4JofY10N7udq1OKMoFc0f9CrkOFyqrONDcsxJ4H0vYq5aXZ7DD2a81MvycMQWB.1RPlJcfPRduIUjgFa_8Dfqw.ssJkW_I7wQcQUYE.dTiVa1N9NOFI.fuo3EAihya8XlSQAc1o0lOKkIf.4B53h1e2YDVRxn2xiYnq.AWTowrSF3ZlDwcrzoQNCZwMk1F1gi2lk2f0G5V7BvMDJUmIU2MK_hPX7L43g9lFOpW0XBse96eI2NtKIMXROBaltmIVzm8MP7WzB5nmLx924msIZXChVkOScClfkMUBujXr_u0YVZU5.zcga.m0oxBZ01EgskBqAU2wWP4myf5zr3KMajrEtcUx3yl7_JS23MIV0UrYKLO6I2wf4e9vjNnKerVF.KTLXzvrj2616TBlgHPf3f9p1XnN2_cQcKnUWCIg8vLkjmOMb0clhdfW9nawIuOBE8iCSYAF_ZE9DiGPDN2UuZbOfvjQAlJCSJclIIVfnayFlqd8XDvjp5teA44kkUScK1ZRRFE9TSeawSvM5T2WKkiChbCJQoQzkviDf0qX_3XNjTiVBWEQzhO2v1zv4j5.38zbdoqM8W7ccda7_LuLzrlYuoLDlFK0VCXNHEoGyXhPUe6qF4b64nELCYHdCSVcK7qtvs_qy9C3hjAuFrgCNC34_nz2qEcqyL5w",mdrd: "n6Z2VpdZUf8nWUZ0fsoBRUGt0rKqA.KFA.50XXX7SHg-1739712908-1.2.1.1-6hiJtV8MC_J92OvtOlmiMbDuqYsqMT0KOS0_O5hEQJN_EVyCDuaGqlBdIduhfwn4TzsMkBTAOMkgZhIINaQ5hZf0l16ab5xjwAitaFFbwpDajVFKcUATfYKPhpfFTIcPWUGgTzNtYJfLGAWZzQmT0hLMblQ6ajYyPQ.TsTole8q2s7.MgCCD4ANc3bY0Tq85EV7ekfhMFPb_5zH3WuY7Q82wyu7myMGrIT4AN0qKsO_PqYgn147J0T0ta6zVgT..2Apl9FWsBEZcZZwbN_Nfr1J34qoomCUvD_4kN9JNe4YA7sSQX7ETXGlin35UsmXvE4GAWsQvY.eGonZ9LARIycLVbb0EKBQf12vsXXPBUDs1hAtlqoBHKOpDWIbbwfWV_xFqgI7Qc.jrVPhazG.UzTc0.LpP8Y0tTUudKv25vEv1YoSYolJliERZzv_2A4iGmRiQ.QNSh1ONPiNnps.v5VglrDj9wzQc2t8drAHPB7Fgm5_sgv4ZV0pXyG48PeubefSM4kr3wIwMeKADWpsfrfwu1OcwknzBww3FdWIzzInIb2jURjABlCjvQRU_LKHsd.JcOc4duuywqEfirAgXcwvVSdrfh1g1XOUuHO59skhLnzKxWhiu1g8R5RAKJKaKTTevnbE4RKfxf8MUOBl5edLI5jYVH84mqoq4VFFt53I472dtj3ViXJAgrvrIOCvifxUgoRAFOMuVoHgZQH0z8cs55Y_5TUE.lcuBVX_WhWMRgRu2DGjDdG4zRQOPFgQ05eaazTHKJ5BysYfTrfXVx7WklfJJgD8h6guVC8Um1KlVECG5XTvK5F4k1u308OLgH.EdIw.4q5BJ4WfuxZKCclJw1CswUijEaNthgVimslB6y9.QzMXnAAIh9JbvzwAnlsnGuftB3xhxfALixXBJHpuK5QKuDWeAicnLn3YlLePs_1lto4cZdnUThhVpeKCF6MnvUb3WLf1renSha72PXMb68LuWG5LQA3O1biDafMO0MMmQpjRoB1EMPPtvdMw4QHg9cL.sUXW4ymwSeKbFAzODbD.YrppooyhMb6ixLk17VULyWf1vVUVbiyftabFMupLlfEFGf96btqCY21Z4SsFl0uuCHM0U.cKI2nj42_jxM27mHGh.RBwghcGVhJ5kS6FmwVxh_odjJIyq8owJOAl2LYDsJ_B2vbBc7KICJ6DM5lBdrIzQXJyMTFvBdcPIIsXDCET.sGsKXkc_xqkT7zXM2aVyjMq_xhs4_8pHp7tKlzDVcpdTzIDeGVY1sX0hkUrtHb7pMFh_qc8R4sD5KhS98YUOMrHc2yqQkYhiWs6RqvEv3UtUaHoNkcQI7T.710l0kXlGG_KU5aujTwYsKODAiLqceY.uXy5pzLXH8eFQ.kqYLZ2KAN5wukTbOW7QRxhPQhDi61ZwSWI6vBx1PyPl.QxiCilaGeyxCaIj8_ZVO1u0.Hgw93WMG5heWNp4o_INtlL5ni247RGrudDf1OAr5NKOs5vayqK__6pTUZYHyXV5nDige72DyqMb8tAI_sgxaZWriUNUD82.gz_4SI8Ky9J91TDsf3R24LnY4Qcdk9j7JyN9riPOZU21wGDqUw82DZJ24.PXa5VOKl77zdXIO.u3t5lOFX5ZDU3o5.Wo80317O56mF4z_KP30QED19ipoodXG11lEg9gf35jrMxFrDNz6A.mLeRz31W15kEtAFr48bTz5zLQij5HKYquF9iAkgIsk3YWH0X2igiE_CjvgZUIkIpQHgtwq2K12c_Q08.ly8alLtOMStFe8TwurGD0nebjZx8efKuC.dIVvUgWJpyTLhaS3akF.18_alS9OKqQqDBE9AGosWaiXcYT3BvWZrWu5M20DgFOIUlr1GZfybPypRbYeSXYcuNNOkDVqwdyAjCroQPKSzA2vcKFwxIglTTWFJs0aWmrjmY4Zkwz.iK3jiHXkqANLsu2BQym.TZWzI4wS2ZP_3xvhobz"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=912deb4e6af25f57';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=N.%20Popov&__cf_chl_rt_tk=M9mHghXEdFcztifQXGrcUOivKuCQXO7O88G8dUaHhi0-1739712908-1.0.1.1-U2_L45TdZ69sYlmeYA2w_ebKSizE992cw6KsCBVhU4A" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>