A two-dimensional matrix code, method of producing the code and a method and device for reading the code are presented. The coupled cover and container define an interior space communicating with an inlet and an outlet. The transistor comprises a first conducting gate stacked on the surface of a dielectric with doped regions formed at two sides thereof as a source and a drain. Each of these in individual nozzle bodies is mounted in a manner that enables it to move relative to the shower head and to the jet disc, and is placed in rotation by a water-driven rotor. The dry mixture is combined with the aqueous mixture in the mixer to form a slurry. Such uses include, but are not limited to, use as antitumor agents, particularly for the treatment of cancers such as colon, skin and prostate cancer and to induce androgen receptor antagonist activity in a subject afflicted with an androgen-related affliction.