Methods, systems and computer program products are disclosed for detecting patterns in a data stream that match multi-pattern rules. In some variations, syngas is catalytically converted to alcohols. A plurality of models for classifying a plurality of messages based on a plurality of message features are obtained for each message. Yet other versions may include tables latching to bars or other objects protruding rearward from the backrests. The universal joint is seated within a portion of the carriage member and is capable of delivering the therapeutic agent to the spinal cord target.