The present invention comprises an improved process for the preparation of substituted quinoxaline I by cyclization of the corresponding dianiline. The method includes identifying, using term-recognition circuitry, at least one key term within an electronic message received with an electronic communications device. The computing device embeds an archive application within an integration application. Each tire-traction section has a plurality of tire-tread contact members. Furthermore, the two winding sections SA2, SA3 cross each other so that the respective roll surfaces have substantially oval-coin-shaped cross sections and the respective major axis lines on the cross sections of the respective roll surfaces cross each other when viewed from the Y-axis direction. The apparatus further comprises a portable control unit that includes a liquid delivery system, a power source, a control system and a user interface for powering and controlling the liquid delivery system.