A method and device for blood treatments that use fluids such as dialysate and replacement fluid for renal replacement therapy. The magnitudes of the first and second parameters vary in proportion to magnitude of the acoustic wave and the first and second parameters have a quadrature phase relationship. The systems and methods preferably allow a user to administer access rights to access and modify the content of portions of the property files. Accordingly, a failure in which the floating gates adjacent in the direction of the isolation film are connected by the remnants of the first polysilicon layer can be prevented. The bended strips are connected to the turns of the meandered strips.