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.
Just 10 weeks after the original iPhone's release on June 29, 2007, Apple dropped the price from $599 to $399 for the 8 GB model. When the original iPhone 16GB model debuted in February 2008, it was priced at $499, but dropped to $399 within two months.