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.
Keratin buildup under toenails. Keratin is a type of protein that is found in hair, nail and the outer skin layers which makes nails strong and hard, but if a buildup of keratin occurs under the nails, it makes them discolored, brittle and deformed. Keratin buildup can also happen in the fingernails as well. Keratin is formed by the matrix of the nail. The matrix is the root of the nail that cannot be seen which is protected by the proximal fold of the nail. Keratin is a hard material that becomes soft with constant contact with moisture.