A method for the low temperature heat treatment of an age-hardenable magnesium based alloy, including following steps: providing a solution heat-treated and quenched age-hardenable magnesium based alloy; and subjecting said alloy to low temperature ageing below 120\xb0 C. The semantic rules follow the pattern of: keyword name, where keyword is either class or function. The injection controller stops fuel injection to the engine in the presence of a misfire. The selected corrector term and an equilibrium term, which produces an equilibrium rating of the engine in the absence of disturbances, are summed to produce a control value, and the control value is applied to the engine. The comparator output generates a pulse with a duration equal to the duration of the cross current event in the replica amplifier. The polymers produced by this process minimize the formation of separate domains and decrease the level of grit in contact lenses made from the polymers.