Abstract: Display driver circuits are described for driving organic light emitting diode displays, particularly passive matrix displays, with greater efficiency. The display drivers comprise a controllable current generator to provide a variable current drive output to an OLED display, the current generator comprising at least one bipolar transistor in series with the current drive output. The display brightness is adjustable by controlling the current generator to vary the current drive to the display. Preferably the bipolar transistor has an emitter terminal substantially directly connected to a power supply line of the driver to reduce losses in the driver. A corresponding method is also described. By employing a bipolar transistor current drive and varying display brightness by controlling the current an efficient driver-display combination is obtained.

Abstract: A device (3) for portioning a string of material (2) moving in the conveying direction (F), particularly a string of sausage, into individual sections (2a) of a predetermined length, including at least one portioning tool (18, 18a, 18b, 19, 19a, 19b, 119a, 119b), which is movable in a circular path around an axis in a manner that it can be moved transversely with respect to the conveying direction (F) into the string of material (2) and out of the string of material and follows the movement of the conveying direction (F) in a limited manner. The portioning tool is rotatable on a circular path around a first axis (20, 21) and on a second circular path around a second axis (16), wherein the axes (16, 20, 21) are arranged at a distance with respect to one another and the rotary movements around the first and around the second axis (16, and 20, 21, respectively) are formed in a manner controllable independent of one another.

Abstract: A system and method collects regulatory licensing requirements, employment data for a professional and licensing data for the professional, and determines the professional's licensing requirements. Based on the professional's licensing requirements, the system and method determines compliance with the regulatory licensing requirements.

Abstract: Disclosed are particular 3-dimensional structural matrices containing nucleic acids, various fabrication processes and methods for the prolonged release of nucleic acids in various biological environments. The nucleic acid-matrix materials are created such that they maintain a defined space, allowing cellular migration, transfection and proliferation to occur in a controlled manner. The fabrication processes provide for both high incorporation efficiencies and control over the sustained nucleic acid release. The resultant nucleic acid-containing structural matrices are thus particularly useful in in vivo cell transfection and gene expression in the context of gene therapy.