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PRK-1U is device for development of concentration. Development of concentrations providing eternal life to all is carried out by concentration of attention on the receiver of generated bio-signal and control of the result of the concentrations. It is known from psychology that the longer the concentration is carried out, the faster the target is achieved, and the events are optimized. The device, in addition to this factor of psychology according to the law of universal connections, has a control of the goa
