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Iranian king wearing headband A hard plastic headband, or Alice band Baby wearing a headband. A headband or hairband [1] is a clothing accessory worn in the hair or around the forehead, usually to hold hair away from the face or eyes. Headbands generally consist of a loop of elastic material or a horseshoe-shaped piece of flexible plastic or ...
Acid Chloride Preparative Route for Nylon-6,10, which is often used in the nylon rope trick. The nylon rope trick is a scientific demonstration that illustrates some of the fundamental chemical principles of step-growth polymerization and provides students and other observers with a hands-on demonstration of the preparation of a synthetic polymer.
Initially made of cotton, which proved impractical, [8] the fastener was eventually constructed with nylon and polyester. [ 5 ] [ 9 ] De Mestral gave the name Velcro , [ 2 ] [ 4 ] a portmanteau of the French words velours ('velvet') and crochet ('hook'), [ 2 ] [ 5 ] to his invention, as well as to the Swiss company he founded; Velcro SA.
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
Jay Leno paid his dues by appearing on fellow comedian Bill Maher's "Club Random" podcast.. The former "Tonight Show" host clarified a floating rumor that injuries to his face were from a beating ...
Map and live results for the Virginia governor's race, featuring Democrat Terry McAuliffe against Ken Cuccinelli; New Jersey governor, where Republican Chris Christie faces Barbara Buono; New York City mayor, featuring Democrat Bill de Blasio against Joe Lhota; and contests for Boston mayor, U.S. House, and Virginia lieutenant governor and attorney general.
[1] [2] Nylon 46 is an aliphatic polyamide formed by the polycondensation of two monomers, one containing 4 carbon atoms, 1,4-diaminobutane , and the other 6 carbon atoms, adipic acid, which give nylon 46 its name. It has a higher melting point than nylon 6 or nylon 66 and mainly used in applications which must withstand high temperatures.
The European Commission on Monday awarded contracts to push forward delayed plans for a 10.6 billion euro ($11.13 billion) secure European satellite constellation in response to Elon Musk's ...