A mud motor universal joint assembly that includes a pair of adjacent cylindrical joints having threaded connection means at one end and interlocking jaws at the other, each cylindrical joint having an internal blind tapered bore within the interlocking jaw portion containing a hard cylindrical load bearing member. The compounds are inhibitors of PLK and are thus useful for treating proliferative, inflammatory, or cardiovascular disorders. Porting includes determining processing targets for the second semiconductor manufacturing process. A second oxygen-enriched fraction, from the high-pressure column andor from the medium-pressure column, is introduced into the low-pressure column, where it is separated into a third oxygen-enriched liquid and a third nitrogen top gas. The data region has a projection formed of a material such as carbon-based material that differs from the material of the servo pattern region.