Definitions of Courier and Regular Mail: Courier: Courier is a type of faster postal service. Regular Mail: Regular mail is the normal postal service that takes more time. Pickup Service: Courier: Courier services offer pick up facilities where they come and take the package that you want to mail from your home. Regular Mail: Regular mail does not offer pick up services. Cost:
Page Content. The National Electrical Manufacturers Association (NEMA) is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Rosslyn, Virginia.
nepÂ·tuÂ·niÂ·um. Symbol Np A silvery, radioactive metallic element of the actinide series. It occurs naturally in minute amounts in uranium ores and is produced artificially as a by-product of plutonium production. The most stable isotope of neptunium has a half-life of 2.1 million years.