The wind generating device of the present invention employs modules each having two turbines. In particular, articles of manufacture comprising polymer coatings containing oligodynamic metal salts can include hydrophobic polymer coatings made from water-reactive monomers and hydrophilic polymers compounded in hydrophobic solvents which contain a small amount of water that aids in the solubilization and suspension of the oligodynamic metal salts. The preferred embodiment is for the cover to transform the appearance of the pail into that of a large stuffed animal, such as a teddy bear. In another embodiment, the tooth surface is selectively stained to reveal the presence and location of the composite filling. Also, this invention improve the society by having better medical cares with medicine generation including bio-informatics’ operationcontrol. The system also comprises a stabilizing mechanism and an objective lens assembly.