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: '9134eec92ab2ce6a',cH: 'ubFAP8TTkoIBjFeAe7j86LZcY4WfoUfD.5FvpACK5Dk-1739786451-1.2.1.1-.cxkj7m6kdeqj6jmXDFe61akatbo7LFE9Ks_.4NFYvyU4PZ7Fkve_kbkudeQIqcc',cUPMDTk: "\/search?q=R.M.V.%20Silva&__cf_chl_tk=jVYLmlE.Bn6O.Hlpl6FUnns9ly8NRY8a_.upqod2PJg-1739786451-1.0.1.1-JzVoAg0G7lXe7Hvm5iQ7BZ8VvdzdWtR8XnmGBMvvZuc",cFPWv: 'b',cITimeS: '1739786451',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=R.M.V.%20Silva&__cf_chl_f_tk=jVYLmlE.Bn6O.Hlpl6FUnns9ly8NRY8a_.upqod2PJg-1739786451-1.0.1.1-JzVoAg0G7lXe7Hvm5iQ7BZ8VvdzdWtR8XnmGBMvvZuc",md: "JUcYANG1J2xb1Iewsjf_sl8hWVNq0KluFQC1Y76idqY-1739786451-1.2.1.1-0mXSqXITYZqxIoEz03I45SS5NlVIXKitTPkQf4VFKXwzR4T_8gem92FwVMvlPvCJViun1Knu.0lTQ4wV..OEAnCAy8afHmef_fR7PnMcmI_Nkh4wqtnmEAmolEbflejdlIOURKyqdQK_8Z4rpxcKvU4avGkqb_d3seH993XxqpHqtMnVUaZpsZyCa4ODyXhlcUDe5RhmRGrmV9IMp7wsMDjgkIK7_avaybEqRArXQmXjBCj5HcVPal8iYfmT6hQHq1yQHZssRjIjQ6AHVOJ.5J2uguPK.08ZpN7KLlNl9mXB.eAIwM.QTEzSg1GwgMmvd0XHPsBBpV1lJCbB6fneMzyz6sOzuKZsPrsC2NDnXgHKPGBym5kV7yUL_5iRV.CsxKNzBf3AF7_schkuGD9rsl.d3wtR1QWtWgNXtGei8hx5r3O8etXQYCW0AAgCc8lIioBuixpWoQAcwkMqt8lBJI7ROyJrcvcjuTzG4LaXlhtyrjsGdyf0XhJrOuDB8flD8xCTO4MC64l2kSfIakamGbW0nWYVoVkJSh9opbLURyXDUBx.WD.HeSunU.Nc2WpaDH7EM8QtZzeTGXeaph5vJ6uu0uA7NHL9TAb103hCl3PM5GoiweLcniw2VXZFgWZcFsx1Sg9Y6PbnnqjZm8r4QwVOVKmbF20vsMpjTxKaKhoNVdQkhmjllG1LP0EpR8.8OyUq8CzW51gKlW4s4BDy3XGR5e_4FAQKPcQn_zuZKMR65gTOH7uxUx7wQ7YRnT5jLd9vY.2iFy2JirjgBU42O.nrnc.qyd0Z0.JB1w_n5LKurcSzshf6U5LzFYLr7lIXU0agKuO2z5kKSFQTGrz09ssiM3PxbFrPNRN3xqRi66N22M9EA6Zns7auxzp5oDJxjkUz3f3U5Eg21wV.IB5uy.gTytAteAhXpc2cLfAbCGi5XMAqOo_sM4ITF2Y1j4k1kCyg3vepxcJkpdtoufKErEwcjygCzrhv9MXmvzM8C0aj67L93cZ5vqckqEfPtLXCdlz_oPd9C4OCL_d02XYg537iwGmbQmc_QZH6MXQtcaSVuLAfumZ1iMwaDARy.efzNYKyAUo0THbw2QJR91Q6uliUg5ogwYyziEl9E1yRmqU2DorMSYYnXv8NOPMtAMGzFboxYNw3D6wiAat5r7aYr1qwMNYJ0SSJ1glPNMZeDgb1SKhUsBX2etJ9PfVzheKZHjfCAtc8b6hIg61b3mB4Mrby9FfuV8L.4LUlRoZ0bZAhdIM2o9ROtk7tHkFGX9qom9kw2ycAfk_CDHnYIsQepgs3dR.UuL_Kzh0tv6fcnJAb7sLa28l0gWrfEpUvKZZmxEGMxNUfVU2YPAwcnCfySLfIxBLjT8z6YQLqfLNR9JL1FcsO6jjpvKooSTgUuZOxKYDw8E9SVbzqP93gmPDagxPrOO6xs8P.X.chfpUQW8K06RC.6dKkZQ8xzvxeYGmpB7AspTm.gM7cDF_AcwyBjxP_bMOE1ihtC_KwuH577TVDcuMhoZPjFyg43PBS6MBvutYXf8K7qAMfHsbsIoeH5p7MXaLe8gArwWq0KlzLNwUQ_7xid5iK0XS__pCXnpbg0yfV2ny.TT.JXkRvSeDWCTBtNFEMipLpXPcjRh1E8WPAb8puRw1TDkoBGl5T60t5fSNKSvpP0dL6.M8CzdNNUWbyUtbXL5Kmwg63tPYwmGLHc3jDK.GmDzVinKo.V0IxHEgb0QZ45YiI40P.7qb7wvVhj2pcZ4TbAOmwccF.gJZUkFzCJV0XQ6bk715A9P7jm8OzQyJGX8y5f5n_i47x7XwopW5327Y9MzKfVYMxamIyC8FCUhxoyZeCtZLUntZogP3fJuvKyF.ZICdblrC9Dh2w5UHCDzxKw147LO0g.BvINj0bpyW0ZKV3Qng3QuLR",mdrd: "PAvY50PCxbldEY8nINHMLKClF24EO8eF12jnj8EFGk0-1739786451-1.2.1.1-BcKp3.AP1UFyb6nyPskhdyVwuXM26g571LXP3aavGcj8qYp4r2XnriXv3WZDSJXxp9sAPa2P7kVNiB4OHIP97kHB12cFWnH7Xfr_DhIAx6FodOJpsPNFQ8FfzQ4Z46O4lvWUrD_4UlLgav261TGXrVDMbjj2AtB5ax_4AvzrVo.6Wy6Li1wRhHpZVzQGO7vTeQbFjbABFAt.hSBWzj5CqFu1Wre3apX245FT0iyI3gDDJ9wdZmRBXZFee8LFRPmP0oTjWXg4AXCt3p5DWflHTkmvWZwnCXtF8low15z7PCK7CX5GM.KicV0MbQNkB81vCOq9.RTWmTj9VPqmIP8ZXDEl1doJe1FOvFJ8t3nNtRZmdCMZme4s6HwLCaAPunRm8AdSD5MUvLvDG5RbvF0kOvD88GJBtdCAf8mQFjO.b0c0qRbBQKEmE.tg9Hmea3rg9dQr7bZZ9xcuV3fdh0s5uBt_31iUsy7.j_tXzW1yO9n9eDzIZ8eLZoTL68n38AdR2VOgz8L1rn1nTsbXFW0Ci0Y7FVGKWAElejTi91yFiaV_M1QW5GdRsIO9YLoz4a7yemu9btxOFswH56hxjuAC5J6MA66w.C..TslchVNKTBdj3biM.wwCwAfmAOSBlJrfeMJKS6kSg8nun7V9hnYwsHlvVaYR_8biDsBzgADMGTrw.oxs0NB0xF79HpAfUjcqFw_YJcLbp7r2BQqVpwQEw1M8Qq7iZD1jz4j7QnGMOKV4R9tgBPK.IT7QOjsglgAwv16feIZa.C4DdF4EIces4sQePdw6EYhhU_8v_fVqzI0cLqvQrirp4b_3gFSWleVv3.zzqdvS775Y.0lcqU._JzrNW9dOcHIddgQ7xvdznJvLVcNnOuOlcBwoWFAqiAwfsjk6Jy22CTw2TQuqBedDNA3CmlA127ZoM7eRpiZaio88bUX7rJ3e8A__w8XEkrodkWEL6ldtx.G_NFiV0cQIBSM32hbvIO3KcIGBvMVzTZq1oCUbVeJsXzAtbecLtpVjCrXd1TuUFc7gnfERnEsnH5pARNDeY7SX_wjjx7ibwewUFqLM2TATudrqhz7MLo_57HUqSkVjlWCzej_UwLRKXwy2wpc3eQFz15jASdCHhFBsSgnmhAOFrms7VP6gxF33EcG3RTY3umCAnye9XPVi_tQvdwvY2LVfMn_Z.snI8aFanz_JfkGMdfBwEfGvEXXe1hYUEjQ_d_ikBdFI8EgVnnjKOPN0sO.qPJjWXXOBtH4dRkHbIMJWuseZ7A0fWtMMRU14b5dtvvuLI0Wx3RcM3HV5nicqzRtcwMzZe3ZxXsiwi.hfLSHC.xIMzIvlatSiuzTZMcU4RnxLhS_sP2AMijXZ.T5wYFc21Is84ukO_ygfzZ2OQog3alHle3b0yNP7s2VZaEN61VyZIiKvjzKWhx9XFGVxcgKaAkbr3EUBvCaaV0N4crQNzGUBKd07RbSBgBeND3SFr_sxLa2UfQvHXyqD6vdJosIDK2u50HGN5p5zP_rMET9Hfnu43g4fxBDfVM0LbbV84HXftzFdZRWZUf_5KWNt047t.W.lKF1ekHM3oLjPSo37PhrXjzdxuakWd3qsSpaC419hhdeTGA4RWbURpPHBfHwSfDVi_DOnaHaGGtw9HY_TAx3YpaqQy_zfIXWkPFfeqhQ6fv3nNejfUY.O.e0dVy6wGZNRoPduzqXaesCtnbquHJE8wQ6JiSu_pOgFM1p5YL9BQ8vs98Yi2aDNjCq73iOEps.M.zt54KBgiyL5uBGC4xXBBYUE5ydUT5QRD52Dj4_.kWKNeJe.nGChL8OvvYtFwABSp6OmQlWVdruxgTBYAf_c7WjMzcWiSZO2PRWCiZckIv05Nn.W0iicjBk11ts4ifEEkpeGSghz6tLBlVEip_FcFE1E9IeC2kGI2Xy4a81Ks9YX3hkTPwsT3Am4jIUF8RZC4mgsK0WszvE_Jk6FKs.GfyWLmaNe"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9134eec92ab2ce6a';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=R.M.V.%20Silva&__cf_chl_rt_tk=jVYLmlE.Bn6O.Hlpl6FUnns9ly8NRY8a_.upqod2PJg-1739786451-1.0.1.1-JzVoAg0G7lXe7Hvm5iQ7BZ8VvdzdWtR8XnmGBMvvZuc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>