SEMINAR      Friday 4 March 2005 - h. 12:00  Auditorium B. Touschek     V. Del Duca  (Torino) QCD at LHC Abstract 30 years after its inception, I shall introduce QCD as a gauge theory  which will allow us to do precision physics at LHC.  In particular, I shall focus on the QCD developments of the last few years.