Abstract :This work evaluated the effect of gamma , beta ,alpha and Semiconductor laser irradiation on Serratia marcescens The experiment included a control and 5 doses of each gamma , beta and alpha irradiation ,which ranged(1.317×10-4 -0.320µSv) and (10.573-96.950µSv) respectively.The total effect of Gamma , Beta and Alpha irradiation on S. marcescens viability was counted after exposure to (137Cs , 90Sr ,60Co , 241Am , 22Na) isotope for 3 hr. respectively, the percentage of killing was highly 83%, 85%, 75%, 90%, 82% respectively . The viable cells was fewer than control (without exposure to irradiation) . This work evaluated also the effect of Semiconductor laser on S. marcescens . experiment included a control and triplicate exposed to Semiconductor laser in power 5 mW , in Wavelength 650 nm . The effect of Semiconductor laser on the viability of S. marcescens was counted and percentage of killing was counted, the number of viable cells of S. marcescenc was fewer than control (without exposure to laser), but percentage of killing was high. Gamma, Beta, alpha irradiation and semiconductor laser was efficient to killing S. marcescens that cause many infection to human.
نبراس رضا محمد | Nebras Rada Mohammed | 19314