
Keywords: مدولاسیون پاکت اکو اسپن echo; AA; ascorbic acid; BSE; Bovine spongiform encephalopathies; B3LYP; Becke 3 parameter Lee Yang Parr; BP86; Becke Perdew86; CD; Circular dichroism; CJD; Creutzfeldt-Jakob disease; CPMD; Car-Parrinello molecular dynamics; DFT; Density functional theory;