The abbreviation SPS stands for items in the following categories:
The Hughes SCANFAR system was the first deployed United States Navy phased array radar system installed on the USS Long Beach (CGN-9) and USS Enterprise (CVN-65). It consisted of two search radars, the AN/SPS-32 and the AN/SPS-33. In 1982, the system was removed from Long Beach, and was replaced by the AN/SPS-48 during a comprehensive overhaul. Aboard the Long Beach, the system used AN/SPG-55 radars for missile guidance.
Despite its failure to enter widespread service, the lessons learned were applied to the follow-on Aegis Combat System and the associated AN/SPY-1 passive electronically scanned array (PESA) radar.
Prior to the development of SCANFAR, the Navy had been developing an advanced anti-aircraft weapon system combining an extremely advanced radar system, the AN/SPG-59, with a new long-range missile known as the RIM-50 Typhon. The radar acted both as a long-range surveillance system as well as the target illumination and guidance system for the missiles. The system proved to be beyond the state of the art, in particular the radar required a larger number of individual broadcast elements that proved to be unreliable and expensive.
All-trans-nonaprenyl diphosphate synthase (geranylgeranyl-diphosphate specific) (EC 2.5.1.85, nonaprenyl diphosphate synthase, solanesyl diphosphate synthase, At-SPS2, At-SPS1, SPS1, SPS2) is an enzyme with system name geranylgeranyl-diphosphate:isopentenyl-diphosphate transtransferase (adding 5 isopentenyl units). This enzyme catalyses the following chemical reaction
Geranylgeranyl diphosphate is preferred over farnesyl diphosphate as allylic substrate.
The Nissan Pivo is a concept car created by Nissan. The Pivo was first introduced at the 2005 Tokyo Motor Show. The car is essentially a 360 degree rotating three-seater cabin on a chassis of 4 wheels, and hence eliminates the need for reversing and makes parking easier.
The Pivo is powered by a lithium-ion battery. The car's futuristic design incorporates large doors for easy access to the cabin and large windscreens and windows for high visibility. As well as the fully rotational cabin, the Pivo features Nissan's Around View Monitor system. This reduces blind spots (areas of the road which cannot be seen from the driver's position) by displaying the outside surroundings on screens mounted on the inside of the car's A-pillars, located on either side of the windshield.
An updated version of the concept, designated Pivo 2 was unveiled in 2007. The wheels have been moved to rotating pods that allow the car to drive in any direction. Along with the rotating cabin, this allows the car to pull up next to a parking space, and instead of conventional parallel parking, the wheels and cab simply rotate 90°, and the car drives in sideways. The rotating cab also now has only one door (the front of the cab itself), allowing passengers to exit or enter from any direction desired. The car also has a robot companion.