An improved probing controller for substrate feeding in fed-batch cultures of E.coli: simulations and experiments;Characterization of IIVOF (high velocity oxy-fuel) process using particle image velocimetry (PIV);Computer-assisted experimental design for the Optimization of electrostatic separation processes;Desulfurization of Steel Melt by Pulverized CaO Blasted through Top Lance of Vacuum Vessel in Rtt Degasser;