An emergency support member is provided for a vehicle wheel and tire assembly having a pneumatic tire that is mounted on a wheel rim. A computer system includes power distribution boards arranged to distribute power such that the computer system may continue to operate if there is any single point of power failure. The invention further relates to a tray device for such a column and to a thermal separation process between at least one gas ascending within such a column and at least one liquid descending within the column. In response to determining that the rate at which the interrupts are being received is greater than the threshold rate, the processor sends just the first received interrupt to firmware for processing. This permits use of a simlified plate die of low cost and makes it possible to provide a fluid circuit core having varying pass patterns, and made from a reduced number of components by a simplified assembling procedure which can be automated.