The present invention relates to a mechanism for moving a vehicular wheelchair restraining device back and forth between a remote, stowed position and a deployed position from which it may lockingly engage a wheelchair to prevent it from freely moving around the vehicle. To be more specific, it is the method of isolating and proliferating single cell clone from the procambium or cambium to promote the stability of the plant-derived biologically active substances production by solving the problems of decrease in cell growth and the productivity during the long term culture. The acoustic signal generator sends an acoustic signal into at least one of the series of transducer elements of the acoustic probe. The intermediate reel is supported primarily by its own buoyancy in water, floating adjacent the source facility during said spooling step and floating adjacent the laying vessel during said transferring step. The vortex scrubbers comprise multiple double fins that are attached inside the housing. The management system of the present invention uses standardized value claims in an administrative process to provide a source for settlement of obligations between parties and to extend the period in which cash is needed as a tool for commerce.