Stable carbene ligands are provided having a carbene center flanked by a quaternary carbon and an amino group, and having utility in the preparation of various transition metal complexes. This method of cooling overcomes the limit in heat flux due to the onset of film boiling, thereby allowing for increased laser average power. Web based applications are downloaded from application servers and run inside container applications. A breather piece, which defines a vapor path with first and second openings, is integrated with the filler cup. The material of a preferred embodiment is sapphire.