 

  

( )  

Reza_delbari@yahoo.com

        

    

 

            
  .             
            
           .   
 .              
             
.            

      

             
 )  .           
     (       
              
              
               
.  

            
               
                
                
           
   

    

      .        
             
             
               
        .       
            
              
              
.           

  

               
.                
             
                
.  

              
              
              
     .          
              
. 

             
             
.            

     ;  

             
              
.  

            
            
   .         .
.             
            
            
.            

      

            
  .          
             
        .      
             
.          

 .               
                 
.       

             
           .   
             
.  

              
                 
             
. 