According to an aspect of the invention, there is provided a management device used in a network to which nodes are connected. The polyhenol is preferably a green tea extract and the enzyme is polyphenol oxidase acetone powder. The seat back is pivotably engaged to the seat back support portion of the frame. For each cluster, elements of the collection of data stored by the cluster are evaluated according to the scoring strategy and a score is assigned to the cluster based on the evaluation. Such preparations of modified single chain polypeptide binding molecules also have ability to bind nucleic acids at the region rich in basic amino acid residues. A motor applies torque to the ballscrew drive arrangement.