complete occlusion of the vessel supplying blood to a part of the body causes temporary loss of function or death of the part, fall in temperature and change in color. vascular plaque. a minor lesion in animals; manifested by slight thickening and wrinkling of the intima of the vessel over oval or elongated elevations.
Alloy. Specialized Allez â one of the best selling alloy bike on the market. Alloy is bicycle business shorthand for aluminium alloy. An alloy is a solid solution made of metal, and another element â the metal in this case being aluminium.A high proportion of bikes are made of aluminium alloy â itâs an easy material to manipulate into an efficient shape, and itâs the cheapest way to make a relatively light bike.teel bike owners generally love steel bikes, and their bikes can last a lifetime kept in the right hands. The material will rust if not cared for, but it wonât fatigue like alloy and is very hard wearing.
Weight. In its raw state, aluminum weighs one-third as much as steel of the same volume. A well-made alloy frame may weigh less than a steel frame, but this is not always the case. Mid-to-high-end steel frame bikes can weigh less than 25 lbs., while a low-end alloy frame bike might weigh 35 lbs.The potential difference is due in part to the engineering requirements of alloy frames, which when combined with the desire to build a low-cost bike, yields a heavier bike than steel would.lloy frames do not rust, but they can corrode. Manufacturers combine the aluminum with elements including magnesium, titanium, iron, copper, chromium, zinc, manganese and silicon, but these elements typically comprise less than 10 percent of the frame's weight.