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.
Appleâs new MacBook Pro family is universally more expensive than the one itâs replacing: the supposedly entry-level MBP, lacking a Touch Bar, starts at $1,499. To get a Touch Bar, the least youâd need to spend is $1,799, and if you want to go beyond 13 inches, the 15-inch MacBook Pro starts at $2,399.