A pharmaceutical preparation comprising EPA in an appropriately assimilable form where of all the fatty acids present in the preparation at least 90%, and preferably at least 95%, is in the form of EPA and where less than 5%, and preferably less than 3%, is in the form of DHA is provided for the treatment of a psychiatric or central nervous disorder. The workbench incorporates two monitors, a CPU, and various input and output devices, including a camera, which may be used to capture work activities. An interactive component drives clarification dialog that is derived from the query and the probabilities associated with the N categories and the one or more topics. Further processes for converting protected silylated clarithromycin oxime to clarithromycin, include heating a mixture of protected silylated clarithromycin oxime, acid, and deoximating agent in an ethanolwater solvent to reflux for more than 4 hours, with a two-fold addition of deoximating agent to produce essentially oxime-free clarithromycin. The top of needle seat has a needle head seat which includes a plurality of positioning sheets thereon and the needle seat is positioned inside the axial extension by a channel of the needle head seat. The wedge clamp is also used to support other members using a bolt or threaded rod attached to the wedge clamp which in this case normally attaches to a single flange of the structure.