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  2. Alpha-keratin - Wikipedia

    en.wikipedia.org/wiki/Alpha-keratin

    Alpha-keratin, or α-keratin, is a type of keratin found in mammalian vertebrates. This protein is the primary component in hairs , horns , claws , nails and the epidermis layer of the skin . α-keratin is a fibrous structural protein , meaning it is made up of amino acids that form a repeating secondary structure.

  3. Keratin - Wikipedia

    en.wikipedia.org/wiki/Keratin

    Keratin (/ ˈ k ɛr ə t ɪ n / [1] [2]) is one of a family of structural fibrous proteins also known as scleroproteins. It is the key structural material making up scales , hair , nails , feathers , horns , claws , hooves , and the outer layer of skin in vertebrates.

  4. Vickers hardness test - Wikipedia

    en.wikipedia.org/wiki/Vickers_hardness_test

    The Vickers hardness test was developed in 1921 by Robert L. Smith and George E. Sandland at Vickers Ltd as an alternative to the Brinell method to measure the hardness of materials. [1] The Vickers test is often easier to use than other hardness tests since the required calculations are independent of the size of the indenter, and the indenter ...

  5. "The keratin treatment can last up to 3 to 5 months," says Jarvis. The reason it lasts this long is to give the chemicals enough time to penetrate the hair shaft and work, says Dr. Chacon.

  6. Hardnesses of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Hardnesses_of_the_elements...

    Mohs hardness of materials (data page) ... Vickers hardness test; Brinell scale This page was last edited on 16 November 2024, at 12:16 (UTC). Text is available under ...

  7. Category:Hardness tests - Wikipedia

    en.wikipedia.org/wiki/Category:Hardness_tests

    Tablet hardness testing; Turner-sclerometer; V. Vickers hardness test This page was last edited on 16 March 2013, at 18:53 (UTC). Text is available under the ...

  8. Nail (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Nail_(anatomy)

    A nail is a protective plate characteristically found at the tip of the digits (fingers and toes) of all primates, corresponding to the claws in other tetrapod animals. . Fingernails and toenails are made of a tough rigid protein called alpha-keratin, a polymer also found in the claws, hooves, and horns of ver

  9. KRT81 - Wikipedia

    en.wikipedia.org/wiki/KRT81

    64818 Ensembl ENSG00000205426 ENSMUSG00000067615 UniProt Q14533 Q9ERE2 RefSeq (mRNA) NM_002281 NM_001166157 RefSeq (protein) NP_002272 NP_001159629 Location (UCSC) Chr 12: 52.29 – 52.29 Mb Chr 15: 101.36 – 101.36 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Keratin, type II cuticular Hb1 is a protein that in humans is encoded by the KRT81 gene. The protein encoded by this gene ...