A cooktop drain that heats liquid in a stockpot and empties the hot liquid directly down a drain. More particularly, then invention relates to methods for monitoring drug action following in vivo administration of a proteasome inhibitor. A low-side transistor is mounted upon the low-side land with its drain electrically connected to the low-side land. The hybrid reactive power compensation device can supply a linearly adjustable reactive power within a predetermined range, and is adapted to supply a current with a nearly sinusoidal waveform. It compares the sensor data with an estimated sensor value, and based on that comparison, dynamically adapts a fuzzy logic rulebase used to determine whether the sensor value is valid or not.