Catalysis, nanoparticles: hydrogen peroxidePhoto courtesy of Dr. David J. Willock, Cardiff Universityin chemistry, the modification of the rate of a chemical reaction, usually an acceleration, by addition of a substance not consumed during the reaction.
The United Service Organizations Inc. (USO Show) is a nonprofit organization that provides programs, services and live entertainment to United States service members and their families.
Mexico (Spanish: MÃ©xico, pronounced [Ëmexiko] ( listen)), officially the United Mexican States (Spanish: Estados Unidos Mexicanos, listen (helpÂ·info)),[10][11][12][13] is a federal republic in the southern portion of North America.