Using a primer paint. It's a good idea to use a primer paint when you're painting over wallpaper. A primer hides better than a finishing latex, and only the primer might do the job. It can be orderded in any color, you only need to know the name and number of the color you want (it can be of any brand), and the primer's sheen is matte.
Ibuprofen was derived from propionic acid by the research arm of Boots Group during the 1960s. It was discovered by a team led by Stewart Adams and the patent application was filed in 1961. Adams initially tested the drug on a hangover.
The discovery of ibuprofen was not accidental unlike many other molecules. Its initial purpose was to treat arthritis. It was discovered in the 1950s by Boots Group, a pharmacy chain in the United Kingdom.