The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

 
       
         
    STUDIA PHYSICA - Issue no. 2 / 2005  
         
  Article:   MICROWAVE ABSORPTION IN PLASMIDIC PBR322 DNA MOLECULES.

Authors:  CRISTINA M. MUNTEAN, ANDREI IOACHIM, CĂLINA CORNEA.
 
       
         
  Abstract:  In this work, scalar microwave measurements of insertion loss and return loss have been caried out between 7.3 12.4 GHz, at room temperature, for aqueous solutions of plasmidic pBR322 DNA and for the corresponding buffer. A low intensity microwave driving field was considered. Samples were placed in a particular configuration of weak electric field. The relative electric field attenuation constants and the percentage of the microwave power attributed to 4362 bp circular DNA-hydration layer, were calculated on the basis of insertion loss and return loss. A broadband influence of low intensity microwaves, have been found for plasmidic DNA-hydration layer systems. No sharp feature, which might prove the participation of acoustic mode excitation to DNA dynamics, at GHz frequencies has been observed. Debye type relaxation processes can explain the experimental results.  
         
     
         
         
      Back to previous page