Ribonucleic acid (RNA) is a linear molecule composed of four types of smaller molecules called ribonucleotide bases: adenine (A), cytosine (C), guanine (G), and uracil (U).ach ribonucleotide base consists of a ribose sugar, a phosphate group, and a nitrogenous base. Adjacent ribose nucleotide bases are chemically attached to one another in a chain via chemical bonds called phosphodiester bonds. Unlike DNA, RNA is usually single-stranded.
Urushi is a kind of natural lacquer collected from the Urushi tree. We Japanese have a 6000 year history of the use of Urushi.Initially it was used as an adhesive, like fixing an arrowhead to the wooden shaft, applying gold foil or fixing chipped porcelain.hen it came to be used for finishing lacquer soup bowls and furniture. The Urushi tree grows in many parts of east Asia including Japan. Collecting Urushi is like collecting gum from rubber tree. We cut the bark of the tree and then the tree yeilds a milky-white sap to cure the wound.
United Rentals, Inc. NYSE: URI) is the largest equipment rental company in the world, with over 880 rental locations throughout the United States and Canada. The company was founded in 1997 by Bradley Jacobs and seven others, and its customer base includes construction and industrial companies, utilities, municipalities, and homeowners.