Influence of 4-amino-5- mercapto-3n-propyl-1 -2-4-triazole on the corrosion and permeation of hydrogen through mild steel in acidic solutions

By using integral representations the perturbation expansion and the Bogoliubov inequality ain nonextensive Tsallis statistics are investigated in a unified way. This procedure extends the analysis performed recently by Lenzi et al. [Phys. Rev. Lett. 80, 218 (1998)] to the quantum (discrete spectra) case, for q < 1. An example is presented in order to illustrate the method.