Predictions for Proton Lifetime in Minimal Non-Supersymmetric SO(10)   Models: An Update
  We present our best estimates of the uncertainties due to heavy particle threshold corrections on the unification scale $M_U$, intermediate scale $M_I$ and coupling constant Alpha_U in the minimal non-supersymmetric SO(10) models. Using these , we update the predictions for proton life-time in these models. 
D.G.Lee, R.N.Mohapatra, M.K.Parida and M.Rani