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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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: '9135b5b33cee5cd6',cH: 'IK7FIdwVXzDfDPgqwMtzkiTGbbWIe4oRWrQ8q9DDOzI-1739794598-1.2.1.1-HkQ0QopUoKcWOkVKqMukF6l8QS.WCX5GdLiLAlW67Mwxpdi_nPvE64hxqnuM71pR',cUPMDTk: "\/abstracts\/search?q=mechanic&__cf_chl_tk=NeHbobtgFvqRk.q.3jmXxdHPfskfp0HkaJY.g_LN4WI-1739794598-1.0.1.1-SUDXhZ0_v.YSfanUgFX_2K1hguKnby7elEeaCQU47sk",cFPWv: 'b',cITimeS: '1739794598',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=mechanic&__cf_chl_f_tk=NeHbobtgFvqRk.q.3jmXxdHPfskfp0HkaJY.g_LN4WI-1739794598-1.0.1.1-SUDXhZ0_v.YSfanUgFX_2K1hguKnby7elEeaCQU47sk",md: "YmQvFWVITd4DDJZpn9OClu6rgBRArO_cEugD8B0Twzs-1739794598-1.2.1.1-3nCgy64NKDs19aLVy7zsSktP6MWrk0ea_KbpKes2RgSjjoFrS3IOmCtR3dcAmT_mM6KTN_H_OaRgDmmOS_QOKMnlwlCSF82JHxo73eKeXCC_fW8TBdPS2f.LP.UFVNki4kyJvKeBsVLXi_o7MVLTE24LRm6M_ND4cQltl9Rx3go_TSFUOY2H1phSLpo6LDBik73rB9wU2A1hjSwHSDMIYlChDoOUt8aRA5gRuDgmS9cNIuviXhqCiWVYT18wmNPm0ZXjjI4_vT8eQcGq63VTPaO9uNQV6gQtEVrUtZN0PYxkzKuMa7n5EwRTmgZR.KpXR6donmX2fjti_IFqa3ETL4yk2wbs5QiI0lTM2H9um4TJXpsAWB9RSmf2x_eTHKtFSWOPp4tfYY0a6PlG__2uqtAH7bv2qTor7GczBhYsLTpjKLe7rTdEAfD73IjrgO34i_T0JigX23q1agmonwWC9Y38r__JC36D0oJpXHh2B.9ag9vaWPaX3yLewrrUXIe0YRte_XmP9_WJ8d5OO9C1lPjEdZUxcEvXI.K5dLutybGpffnaNel5uE5H1usgwmKQN_Vy5TpnuKuCEAluN1AIbnj7PL.IKKXNpMS7damZBpiUAHpa_WIQuHSk.YAB6yx1gZlIjzrCwAHtYgm0f22rWQOAxsv7S5N8gSY3F5sqOzO7fBF9qIVsZA7O3rwNX0Wazv_tmqhX1GhABs4O4WHe_67VNgIKaO.4ZliWTIHAPdfi2aFF7GDKfxqoaUB4q52AjyYf4q7QkWsqL3iRUEvEoFh6O7S.tH6UZhEEKtFrRbfT2M2HbXVUXAJgCNILYUUEJ2o0D7c9BaOgQVlzfwFpzZgsNbbQbSqJ0jYl_SWmjHyyQt.P41aYTJAQJt4wxWcjjaP_UzhBFUTtvS_.ObO2NPzvmLhj_YncgnWNpd8oC_RqL3i5LudsDETx3ytqclli9aeYtkpjhCw46iGDSJ_VgSTk_tKius7jBlNpaYUgCnBx63.i4Tu9vc_JluZvZHRptsreAayTronJzSDuJnJbgz4t5z8jXFHmm9jHZYt1lhcNs6m2_tU8xoCPUBb3oOYnX.bZ6G_JUUfLFUTl3AB7K1dtSV3t3E1lkvzwm06ndKO_nyKk0rMxK1hjFP4ci2EbaBKZx3VivXAkwVjcdUA3XhUPdodG8GCaWAkPY6LzcvRFqSRFThvBMX8d0_i.aJjbBIVtw66p_Ucud1kSZHj4kPUl3giIk6w8c.cDS7vzS50Y1oWCfkhSyHr3YkOMAE_f_uLiuxE3cYfOC9zm.dn15q_WdTxpf31Gd5PhjQPNE_G4bJFwhtNTj0wi5g7uTDjQ9f61m2QIvXA1ntwnsyNXmnh6njtU6.VyBTbY9HXttJ24BU5tmcIuFzl6Zsj0EOMQlyZQreL2BQjxW56OrWXhh1QsUHTfNOrLCUs0Wt2VbAS1jxWVbRmWZOj786vWAlXcewPJHT7ZOZXtKCmO0JuwYkjoZCgpdXek.O6T8BCWl83gBFK4x62hc43zrnljO38qi3WJB_TMIb5ZfIHDnWcPLa0YpI3a_F055n8b5bN._B4644OwRUj.mNr6jeOUDNb2Yr2fw6RmqzY1gWrbipXKS4mBF6frmSNfem.a3MU6QM6peOY9.ytiVN_gbp7svC1GI9Y4r_uv_eAzMSQ8heEg8tYZmTOWjt37mGREI0eUz2BxB5WVWaFMCOtHazEqU5z9aD36GNQSPK6jgHFAJRq6_1zlixqF6zUCxm2AAQ_aOsaP7Z5ZAdlWGcBqNbCFy62EC40TOL.1H8tCdPnb4PEWChejYFU.OvekeOKfByv7GISoR2B352xkITq8OYYM06MUF6uZiN2iC9vBQNQkE.vAyDr9ffUYTSeU4ykchgUHOP.aeuPrSsJoiX38P95ggP8akZVJk7zrFoG.Xgx52gQIFw",mdrd: "srUxSU2EyDkyQnCG0tsQkFyCdll2SKP7lA4d4Nf9dnE-1739794598-1.2.1.1-RLAWF8_qR.RVSLdlXT2ahqPI9bGQoY0AoECSrt6wwAoAF9dFEyGuFr64hzXmkXLaQC3KSIcy4vVnXDQvz3nGj6lUNMcbPFO25OOvsRgPyTmsk4wJn6M4_d2jT4n3FjetQQwoHHmUworlAr31IBdwZsSlRXRKxep.GyXX20CWAYuxDNoSLanA2_igaJkYmi3dgYb1.RKpxsi31bZZiJwstvtVgQeyuqGbDVw_OMiwg0A4nNgXOscf1IQh6tdPJ3AfvmLok4wCB5.A7K9K3m9AzFiRf71qtNt2qjoYpaAjYHBLxRAZes_JXP.SJqWnwgJ16.9VN1qfNjNZMzcmXpKB1Nu3sOCB3Fcf.voB02KY1rRHJ3Mzz3XMasMk5LTkRNNKXXV8V5NULJhWCvZAPVTepj_VCRbp5cK0dVHiz290NmshNw_yOm9QEofyQ3K0_bIjzbLCRjf9rlkgKs36OlqqFisvYKLDw9UWzLHdTaC1UrPa5jmVmUWZ8uaMoRKU8HykngbgN_4QJA03G9OZT9hzuUliQPkT9S6uGvBfCvxyiVeY8on2JH2Ar78ygMs4kphBp.i5JSumSGA85aIXJm1pbFcKLZ2wEcd12uUr8AASnoiM7aW7HimFYYB5FzHkAM_jVSaRWZB1nXS328xo29mfl.StLewtHF4WKivOGX9jbr.xI9e2Iuirn3iP_3khEvnVMMyhFZkZykehlur7zM0sZBHZaYsE1voZkUaUCdRfKb9xpP2ly.aOJOUacN..4BRW3IEj8RMixeUQdjRU8YFEvNYd_pPZgs.JFkzTCVr77ZJbymRH3d9AjAQDaW80nUYaMotVXFEFKMrX4DkMLThfdztdD2PafuQQuLq8j_RacPE395sHel5TkOujHNV3iynT5u4zo_4ppRNL505u5LEqMV6YSX_hM7jkSqr0Z2yplRhUBzxhZWLQnBSs._RG5V9Xsb2wWh4DRgPWNasOab_6A8mV6Z8WMaAjYZ03ucExRVbwLM6nv5rPFTI_Oq0BqaBP.IOIv19OzROVcDq84ponqB3aKk9mi6BzA6nwYKtRtqnWKvhCm.9sdVvFdIDLbza3hotF.vI_Ccf.Fckc7Lb2u0dzYjC6D_8BUxHoweRwZzPSCpD8OGIKJ7BsiS0OqQ2UWcRUN6wo9K16wRQGJRTjRBLO5xxQOGdsAO2VOTLETtiiXhql671ROzeBc5XL4IchsgIIERIPrEGmW5qwXgixRHKeCzosW2FF27if1.bb5Ul_KX6ag6Mg8xaoHw3gtTqSqxxe_N8i1Bwxvfdnfvp2YqH9hIOWiDzIBBPY1a7xw3HsEnUoUb8Gu53vP3sIX6nLB36qA_V_G_dBGKpMzoVjNLpUSiqYPeRRqu8A1VYYTvBj2I0AyuYDLZM_SdeTBzPw7_A8dhAcSNIbAiAtm09n4nkojhCcbx0Y4y7L4z.6BZYAcT0OWBXJbLaIbop70ShjGiN_RR7gahIyMXM.2RWajGeZpfeTH01rH2hKIe5WUu5d3_0rTMLsjKbLYSVnthbPBi9G.LV.lpeFVySL2VIevbkatPrGjrZR3w5dBtRHbggs4EsqoQqKLQySR8g7wdlwHg3cyjgUH3F3yn8Ke.WpjAHtXEi7JoVCf8IYjjJ58I740WTMDurXMSYufWcSv.np2LkghS35butW1038U9GR3zkggcEuiAjo10vYepxZRgUlT7W3FrOfbEzAZ7jfpg_7l4KT97NEPF2D_qCvDJ12SL4VHvL_fOengdVED2N4pcNFrHZCW09SWxf.kq2Bvxinf45fdjWw8BQn9jWswIwxihcYZ90nNDkYx...qSFn3PnccX9XkzamH4PdnBPg0yBz6hjakBWi5tsIiXGrrNTGIpmtI0XjXCKAxqcWVxQ169PrtCa5TrHQwdB6Ct4CeUOW0JR1NjxEBzMMHU12pk6faVongg.xdBJa4.ap7eugqRRx9m7kW4GIIzF.nPnpxi47"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9135b5b33cee5cd6';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=mechanic&__cf_chl_rt_tk=NeHbobtgFvqRk.q.3jmXxdHPfskfp0HkaJY.g_LN4WI-1739794598-1.0.1.1-SUDXhZ0_v.YSfanUgFX_2K1hguKnby7elEeaCQU47sk" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>