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                                                          Demonstrator : From 1974  to 1981  | 
                                             
       
                                            
                                                          Assistant Lecturer : From 1981 to 1993  | 
 
  
                                            
                                                          Lecturer : From 1993 to 2001  | 
  
                                            
                                                          Assistant Professor :From 2001 to 2005  | 
          
                                            
                                                          Professor  :From 2005 Until Now  | 
                                   
                                       
                                             
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                                                          Histological and functional improvement of renal and pulmonary tissues of female albino rats with certain antioxidants after treatment with Fenthion insecticides .  | 
                                             
                                         
                                            
                                                          Analytical and microscopical studies on the protective effects of Ascorbic acid (vitamin C) and Beta – carotene against the toxicity induced by Fenitrothion the liver of female albino rats . | 
                                          
                                            
                                                         Effect of acute exposure of Cyanophos on clinco – biochemical and pathological aspects in rats .  | 
                                            
                                                         Assessment of the hazardous effect of fungicide Dithane on Clarias lazera ( catfish) including Hematological , Biochemical and Immunological parameters  |