{"id":16265,"date":"2024-08-22T17:55:11","date_gmt":"2024-08-22T17:55:11","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=16265"},"modified":"2024-08-22T17:55:11","modified_gmt":"2024-08-22T17:55:11","slug":"snails-teeth-strongest-natural-material","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/ro\/science\/zoology\/snails-teeth-strongest-natural-material\/","title":{"rendered":"Din\u021bii melcilor: Cel mai dur material natural de pe P\u0103m\u00e2nt"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Din\u021bii melcilor: Cel mai dur material natural de pe P\u0103m\u00e2nt<\/h2>\n\n<h2 class=\"wp-block-heading\">Descoperirea celui mai dur material natural<\/h2>\n\n<p>Cercet\u0103torii au descoperit c\u0103 din\u021bii melcilor marini, cunoscu\u021bi sub numele de patelle, sunt cel mai dur material natural de pe P\u0103m\u00e2nt. Aceast\u0103 descoperire este revolu\u021bionar\u0103, deoarece dep\u0103\u0219e\u0219te rezisten\u021ba materialelor naturale cunoscute anterior, precum m\u0103tasea de p\u0103ianjen \u0219i chiar diamantul \u00een anumite aspecte.<\/p>\n\n<h2 class=\"wp-block-heading\">Cum \u00ee\u0219i folosesc melcii din\u021bii<\/h2>\n\n<p>Patellele \u00ee\u0219i folosesc din\u021bii pentru a excava rocile \u00een timp ce se hr\u0103nesc. Din\u021bii lor sunt localiza\u021bi pe o limb\u0103 zim\u021bat\u0103 numit\u0103 radul\u0103. Radula este incredibil de puternic\u0103 \u0219i durabil\u0103, permi\u021b\u00e2nd patellelor s\u0103 macine cu u\u0219urin\u021b\u0103 rocile.<\/p>\n\n<h2 class=\"wp-block-heading\">Compozi\u021bia din\u021bilor melcilor<\/h2>\n\n<p>Oamenii de \u0219tiin\u021b\u0103 au stabilit c\u0103 din\u021bii melcilor sunt compu\u0219i dintr-un amestec de nanofibre de goethit \u00eencapsulate \u00eentr-o matrice proteic\u0103. Goethitul este un cristal care con\u021bine fier, iar matricea proteic\u0103 ofer\u0103 din\u021bilor rezisten\u021b\u0103 \u0219i flexibilitate suplimentare.<\/p>\n\n<h2 class=\"wp-block-heading\">Compara\u021bii de rezisten\u021b\u0103<\/h2>\n\n<p>La testare, s-a constatat c\u0103 din\u021bii patellelor sunt de aproximativ cinci ori mai rezisten\u021bi dec\u00e2t majoritatea m\u0103t\u0103sii de p\u0103ianjen. Sunt, de asemenea, mai rezisten\u021bi dec\u00e2t kevlarul \u0219i comparabili cu fibrele de carbon de cea mai \u00eenalt\u0103 calitate. De fapt, un singur fir de spaghete f\u0103cut din acest material ar putea sus\u021bine aproximativ 3.300 de pungi de zah\u0103r de o lir\u0103.<\/p>\n\n<h2 class=\"wp-block-heading\">Aplica\u021bii poten\u021biale<\/h2>\n\n<p>Descoperirea rezisten\u021bei din\u021bilor melcilor a deschis noi posibilit\u0103\u021bi pentru aplica\u021bii inginere\u0219ti. Acum, inginerii se uit\u0103 la melci ca la poten\u021biali consultan\u021bi naturali pentru dezvoltarea de materiale, structuri \u0219i chiar ma\u0219ini puternice \u0219i durabile.<\/p>\n\n<h2 class=\"wp-block-heading\">Alte materiale naturale puternice<\/h2>\n\n<p>De\u0219i din\u021bii melcilor sunt cel mai dur material natural descoperit p\u00e2n\u0103 \u00een prezent, exist\u0103 \u0219i alte materiale naturale rare care pot rezista la o tensiune mai mare dec\u00e2t diamantul. Acestea includ:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Nitrur\u0103 de bor wurtzit:<\/strong> Un material cu o structur\u0103 asem\u0103n\u0103toare diamantului, dar care con\u021bine bor \u0219i azot.<\/li>\n<li><strong>Lonsdaleit:<\/strong> O form\u0103 hexagonal\u0103 de carbon care se creeaz\u0103 atunci c\u00e2nd meteori\u021bii care con\u021bin grafit lovesc P\u0103m\u00e2ntul.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Rezisten\u021ba la trac\u021biune \u0219i duritatea<\/h2>\n\n<p>Este important s\u0103 se fac\u0103 distinc\u021bia \u00eentre rezisten\u021ba la trac\u021biune \u0219i duritate atunci c\u00e2nd se discut\u0103 despre rezisten\u021ba materialelor. Rezisten\u021ba la trac\u021biune se refer\u0103 la capacitatea unui obiect de a rezista la rupere prin tragere, \u00een timp ce duritatea se refer\u0103 la rezisten\u021ba sa la zg\u00e2riere sau t\u0103iere. Din\u021bii melcilor au o rezisten\u021b\u0103 la trac\u021biune excep\u021bional\u0103, dar nu sunt la fel de duri ca diamantul.<\/p>\n\n<h2 class=\"wp-block-heading\">Concluzie<\/h2>\n\n<p>Descoperirea rezisten\u021bei din\u021bilor melcilor este o dovad\u0103 a incredibilei diversit\u0103\u021bi \u0219i rezisten\u021be a naturii. Aceste creaturi mici au evoluat o adaptare remarcabil\u0103 care i-a inspirat pe ingineri s\u0103 exploreze noi posibilit\u0103\u021bi pentru dezvoltarea de materiale puternice \u0219i durabile.<\/p>","protected":false},"excerpt":{"rendered":"<p>Din\u021bii melcilor: Cel mai dur material natural de pe P\u0103m\u00e2nt Descoperirea celui mai dur material natural Cercet\u0103torii au descoperit c\u0103 din\u021bii melcilor marini, cunoscu\u021bi sub numele de patelle, sunt cel&hellip;<\/p>\n","protected":false},"author":2,"featured_media":24104,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[280],"tags":[21573,21572,21576,21574,21575,5579],"class_list":["post-16265","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zoology","tag-strongest-natural-material","tag-snails-teeth","tag-nature-inspired-engineering","tag-limpets","tag-tensile-strength","tag-material-science"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/16265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/comments?post=16265"}],"version-history":[{"count":2,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/16265\/revisions"}],"predecessor-version":[{"id":24105,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/16265\/revisions\/24105"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/media\/24104"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/media?parent=16265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/categories?post=16265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/tags?post=16265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}