The present invention relates to fluorocarbon vectors for the delivery of influenza antigens to immunoresponsive target cells. Each float section comprises a concrete shell having a deck portion, opposing side walls, opposing end walls, and an open bottom which together define a flotation container. Parameters related to the chemicals being used for surface treatments are measured in real time and on-line, and these measured parameters are used to control the dosage of chemicals into the surface treatment system. The drawbar unit is installed in the spindle unit forming the automatic tool exchange device and clamps the tool at a front thereof. The polymer-clay nanocomposite comprises a matrix polymer, an amorphous oligomer, and a layered clay material.