Methods and systems for dynamically adjusting credits used to distribute available bus bandwidth among multiple virtual channels, based on the workload of each virtual channel, are provided. The electricity-generating means is an alternating current generation means attached to the engine in a crank angle position at which an output is generated in synchronization with the intake timing of the engine; the signal is an injection command signal applied to the solenoid valve as an alternating-current drive current; and the applied voltage increases with increased engine speed. If there is a channel quality indicator available, the communication network entity calculates a required downlink power. The recipient is able to specify, upon presentation of the first audio identifier or sender-related information, whether to enable subsequent presentation of the first audio identifier prior to or concurrent with receipt of a future digital communication from the sender. Suitable scrubbing liquids are the organic cobalt-depleted hydroformylation reaction product or a downstream derivative thereof, or an aqueous solution of a Co2+ salt, preferably such salt of formic acid. The chip can be implemented by a semiconductor on insulator process and can include at least one bipolar or MOS transistor, an insulator underlying the transistor, a semiconductor substrate underlying the insulator, and a metal heat flow path extending between a terminal of the transistor through the insulator to the substrate.