The invention relates to heterocyclic compounds consisting of a core nitrogen atom surrounded by three pendant groups, wherein two of the three pendant groups are preferably benzimidazolyl methyl and tetrahydroquinolyl, and the third pendant group contains N and optionally contains additional rings. A vacuum channel communicates with the opening and with a vacuum port for connection to a vacuum source. The steel billet is formed based on a goal of uniform surface temperature distribution thereby minimizing thermal stresses induced within the steel article thereby produced. A planet gear carrier connects to the planet gears and transfers rotational energy to an output. The first data output unit combines the first data and the first error detection bit in series and outputs the combined bits.