A high PT usually means that there is serious liver damage or cirrhosis. Other things to know: Some patients take a drug called Coumadin (warfarin), which elevates the PT for the purpose of thinning the blood. This is not related to having liver disease because it is the Coumadin causing the PT to be high.
A battery backup, or uninterruptible power supply (UPS), is primarily used to provide a backup power source to important desktop computer hardware components.
I believe it stands for Electro-plasma system. The electro-plasma system (EPS for short, or more specifically the electro-plasma distribution network, as engineers like to call it) is the primary form of energy distribution on starships.