The mean time to onset of a 12% increase in FEV1 for PROVENTIL HFA Inhalation Aerosol was 7 minutes and the mean time to peak effect was approximately 50 minutes. The mean duration of effect as measured by a 12% increase in FEV1 was 2.3 hours. In some pediatric patients, duration of effect was as long as 6 hours.
The Aztecs, who probably originated as a nomadic tribe in northern Mexico, arrived in Mesoamerica around the beginning of the 13th century.
Mexica (Aztec) society was largely divided into two main classes: commoners (macehualtin), like the figure on the left (C), and nobles (pipiltin), like the figure on the right (N). COMMONERS. â¢ Obliged to pay tribute, in kind and in the form of communal work. â¢ Only received tribute payments if they succeeded in moving up from commoner status to noble. â¢ Only merchants (pochteca) who had earned high status had the right to own state-run land.