1 In the All or part of the file name box, type officeav.dll. 2  In the Look in box, click Local Hard Drives. 3  Click Search. When the search result is displayed in the right pane, note the path of the Officeav.dll file.  Locate the Officeav.dll file, right-click officeav.dll, and then click Rename.
The hair shaft made of a protein called keratin is tough and resistant to wear and tear. Eighteen amino acids make up the keratin of which the most abundant is the cysteine. It gives the hair much of its strength. The middle layer of the hair is the cortex. It is made up of polypeptide chains that are cross-linked with each other, by three different types of side bonds.
As you might have guessed, hair fiber is mostly made from hard keratin proteins. Hair contains a high amount of sulfur because the amino acid cysteine is a key component of the keratin proteins in hair fiber.The sulfur in cysteine molecules in adjacent keratin proteins link together in disulfide chemical bonds. These disulfide bonds are very strong and very difficult to break apart.s you might have guessed, hair fiber is mostly made from hard keratin proteins. Hair contains a high amount of sulfur because the amino acid cysteine is a key component of the keratin proteins in hair fiber.