The next time you snag a window seat on an airline flight, check out the planeâs wing. There is a good chance the tip of the wing will be angled upward, almost perpendicular. Or it might bend smoothly up like the tip of an eagleâs wing in flight. Though obviously more complex, these wing modifications have the same aerodynamic function as the folded wingtips of a paper airplane.
scoria - the scum formed by oxidation at the surface of molten metals. slag, dross. scum - a film of impurities or vegetation that can form on the surface of a liquid. basic slag - slag produced in making steel; low in silica but having large amounts of calcium phosphate; useful as fertilizer.
Psoriasis is a skin disease that causes scaly pink patches. Guttate psoriasis is a particular form of the disease that usually affects children and young adults. It can happen on its own, or as a complication of ordinary (chronic plaque) psoriasis. Often, it follows a bacterial throat infection or tonsillitis.soriasis is a chronic (long-lasting) skin disease of scaling and inflammation that affects greater than 3 percent of the U.S. population, or more than 5 million adults.