A recoverable embolus filter has a symmetrical design with two corollas with radially extending extensions that are mutually interconnected to permit them to slide with respect to each other. The apparatus is a tool for transporting and installing the devices. This rotary dial can be pivoted through a certain angle by the action of a pusher to display another complication or image through the opening. A portion of the hydrocarbon product is recycled to the first reaction zone to increase the hydrogen solubility of the reaction mixture. The known sequence detector detects at least one of known data included in the received first broadcast signal and known data included in the received second broadcast signal. The virtual editor selectively retrieves one or more of the received content objects to construct a personalized publication for a requesting user based, at least in part, on an accessed personal profile associated with the requesting user.