Substrates are cleaned by contacting the substrate with a cleaning composition, particularly an aqueous composition, including at least one compound of the formula : pPhmCOOnR1 where R1, AO, n, M, Ph, R2 and p have defined meanings, particularly to give alkyl benzoates. The machine in accordance with this aspect of the disclosure is characterized in that the means for delivering cooling air includes a valve plate mounted on the section box to pivot around an axis and having a valve plate opening that registers with the outlet opening in the section box. Owner application control information is consulted to determine if one or more required applications are available for execution on the electronic device. Whether an agent is suitable depends on suitability parameters of the evaluating means. The power generator output optimizing part solves the objective function further considering an automatic frequency control capacity constraint based on an upper limit of rates of change of outputs of power generators of the power system. The first P doped drain region of the first PMOS transistor serves as a drain of the second PMOS transistor.