An acromioplasty involves shaving of the undersurface of the acromion. The acromion is a projection of bone extending from the shoulder blade out over the top of the shoulder joint and provides attachment for muscles around the shoulder including the trapezius and deltoid muscles.
The reason DaimlerChrysler's Global Electric Motorcars (GEM) subsidiary can be in business is the National Highway Traffic Safety Administration's 1998 creation of the Low Speed Vehicle (LSV) standard. LSV is sort of a cheat, a way to make electric vehicles viable by eliminating every obstacle in their way.
Rocket motors. 1  GEM-40, solid rocket booster used on the Delta II rocket. 2  GEM-60, solid rocket booster used on the Delta IV rocket. 3  GEM-63, solid rocket booster used on the Atlas V rocket. 4  GEM-63XL, solid rocket booster used on the Vulcan rocket. 5  Castor 4, solid rocket used on the Maxus sounding rocket.