........................................................................................................ III RESUME .............................................................................................................IV CHAPTER

Results on t/decays from Mark III are presented. With a data sample of 240,000 @events, we measure w’+x+K-~, @+rlv, t/+~~, w’+‘y4x*, @+@x*, and perform a search for -t/-+pz Implications of our measurements are discussed.

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The sorption and desorption behaviors of Eu(III) from aqueous solutions with cation exchange resins containing carboxyl groups (D155 resin) were studied in terms of varied Eu(III) concentration, adsorbent dosage, pH, contact time and temperature. Batch shaking sorption experiments were carried out to evaluate the performance of D155 resin in the removal of Eu(III) from aqu...

The present work concerns on the investigation of the role of polyethylene glycols (PEGs) as masking agent for amelioration of extraction-separation of La(III), Eu(III) and Er(III) ions by the acidic extractant bis(2-ethylhexyl)phosphoric acid (DEHPA). The studied solvent extraction system is based on the combination of chelating effect of DEHPA in the organic phase on the one hand, and the bin...