Pressure Ulcer Deï¬nition Localized injury to the skin and /orunderlying tissue usually over a bonyprominence, as a result of pressure, orpressure in combination with shearand/or friction.
1 The 2.4GHz MacBook with 2GB of memory is available for about $1,000.  Apple's ultraportable laptop, the MacBook Air, is aimed at business travelers. The 1.6 or 1.86GHz processor is slower than a MacBook but what it loses in power it gains in portability.
The average price of a Mac laptop has fallen just 3 percent over the last two years, compared to a 20 percent decline in Windows laptop pricing. Apple. Speculation that Apple might be slashing Mac prices in the coming weeks could get a boost from new data released by The NPD Group.