property, pant and equipment 7,147 2,668 Interest income (26,019) (50 932) 19.074,023 14,250,929 Changes in operating assets and liabilities Arxotnts received° (1,187,278) (1.203.611) Accounts recerva de from related parties 997 17,138 Prepaid expenses 1.360.616 798,010 Spare parts invento