A medical needle shield apparatus is provided that includes a needle hub having a needle cannula extending therefrom. A semiconductor wafer is loaded onto a the X-Y table of the scanner. A set of precoding matrices is defined for mapping r<R1 data streams onto the transmit antenna ports. Since the internal plumbing of the fuel injector is connected to a high pressure rail during and between injection events, static leakage across the guide region of the needle valve member can reduce efficiency. The switching core receives the first choice for each of the ports and determines whether the aggregate schedule defined by the first choices is valid. More particularly, it relates to novel compositions containing a base polymer, a block copolymer and a nonmigrating compatibilizer or plasticizer that, in combination in a blend, result in a floss or dental tape having good breaking strength, elongation, tenacity, nick resistance and gentleness to the gums.