Name: Ryu. Gender: Male. Usage: Ryu is a popular first name. It is more often used as a boy (male) name. People having the name Ryu are in general originating from Japan, United Kingdom, United States of America. For another variant of the name Ryu across the world, see Ryuu.
n. a federal statute making it a crime to transport a woman across state lines for immoral purposes. The Mann Act was intended to prevent the movement of prostitutes from one state to another or in and out of the country in the so-called white slave trade.
Black Oxide, blackening, oxidizing, oxiding, black passivating, gun bluing . . . these terms all refer to the process of forming a black iron oxide on the surface of ferrous metals. The black oxide process is a chemical conversion coating. This means that the black oxide is not deposited on the surface of the substrate like nickel or zinc electroplating. Instead, the black oxide coating is produced by a chemical reaction between the iron on the surface of the ferrous metal and the oxidizing salts present in the black oxide solution. These oxidizing salts include penetrates, catalysts, activators and proprietary additives which all take part in the chemical reaction.