“…As Hund et al (2001) mentioned, measurement results can deviate from their true values due to any one or a combination of the followings: method bias, time variability, repeatability effect, and reproducibility variance. For the N-oxidation of alkylpyridines, Papadaki et al (2002Papadaki et al ( , 2007 showed that errors in the measurement of electric calibration power and various temperatures would affect concentrations and consequently heat of reaction and kinetic parameters evaluation. From the definition of δ and β, it can be seen that the product of heat of reaction and activation energy can move the points in the candidate zone vertically along the β-axis.…”