{"id":264,"date":"2008-09-28T09:13:03","date_gmt":"2008-09-28T05:13:03","guid":{"rendered":"http:\/\/www.lovendal.net\/wp52\/?p=264"},"modified":"2020-02-09T22:40:16","modified_gmt":"2020-02-09T20:40:16","slug":"energie-electrica-din-urechea-umana","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/energie-electrica-din-urechea-umana\/","title":{"rendered":"Energie electric\u0103 din urechea uman\u0103"},"content":{"rendered":"

\"\"<\/a>O protein\u0103, pe nume prestina, se reg\u0103se\u015fte \u00een urechea intern\u0103, mai precis \u00een cohlee, mult mai precis \u00een organul Corti. Pentru a fi c\u00e2t se poate de exac\u0163i, vom spune c\u0103 prestina se afl\u0103 \u00een celulele ciliate. Celule ciliate sunt sisteme senzoriale, responsabile cu sim\u0163ul auzului. Exist\u0103 dou\u0103 tipuri de celule ciliate: interne \u015fi externe. \u00cen cohleea uman\u0103 se g\u0103sesc aproximativ 3.500 de celule ciliate interne \u015fi circa 12.000 de celule ciliate externe.<\/p>\n

Celulele ciliate interne transmit semnale electrice c\u0103tre creier, \u00een func\u0163ie de oscila\u0163ia lor (produs\u0103, desigur, de vibra\u0163iile sonore care ajung la ele). Pe de alt\u0103 parte, celulele ciliate externe convertesc orice modificare de poten\u0163ial electric, comandat de creier, \u00een mi\u015fcare \u00een sens longitudinal. Ele joac\u0103 astfel rolul unor amplificatoare electromecanice de sunet. De conversia semnalelor electrice \u00een vibra\u0163ii \u015fi a vibra\u0163iilor \u00een semnal electric este responsabil\u0103 proteina de care aminteam mai devreme: prestina.<\/p>\n

Cercet\u0103torii Matthew Silver \u015fi Kranthi Vistakula, ambii de la laboratoarele IntAct, afirm\u0103 c\u0103 fiecare protein\u0103 de prestin\u0103 este capabil\u0103 s\u0103 produc\u0103 energie electric\u0103 de ordinul a c\u00e2torva nanoWati. Ele pot fi folosite pentru a produce energie electric\u0103! Deocamdat\u0103 obiectivele celor doi cercet\u0103tori sunt relativ modeste. Ei \u00eencearc\u0103 s\u0103 realizeze nanosenzori de vibra\u0163ii care s\u0103 aib\u0103 drept element activ tocmai prestina. Dar, pentru un orizont de timp ceva mai \u00eendep\u0103rtat obiectivele sunt mai ambi\u0163ioase.<\/p>\n","protected":false},"excerpt":{"rendered":"

O protein\u0103, pe nume prestina, se reg\u0103se\u015fte \u00een urechea intern\u0103, mai precis \u00een cohlee, mult mai precis \u00een organul Corti. Pentru a fi c\u00e2t se poate de exac\u0163i, vom spune c\u0103 prestina se afl\u0103 \u00een celulele ciliate. Celule ciliate sunt … <\/p>\n

Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":66507,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[185,9794,186,184],"class_list":["post-264","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-medicina","tag-energie-electrica","tag-medicina","tag-proteine","tag-ureche","resize-featured-image"],"yoast_head":"\nEnergie electric\u0103 din urechea uman\u0103 - Secretele lui Lovendal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lovendal.ro\/wp52\/energie-electrica-din-urechea-umana\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Energie electric\u0103 din urechea uman\u0103\" \/>\n<meta property=\"og:description\" content=\"O protein\u0103, pe nume prestina, se reg\u0103se\u015fte \u00een urechea intern\u0103, mai precis \u00een cohlee, mult mai precis \u00een organul Corti. Pentru a fi c\u00e2t se poate de exac\u0163i, vom spune c\u0103 prestina se afl\u0103 \u00een celulele ciliate. Celule ciliate sunt ... 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