[en] Electron Cyclotron Resonance (ECR) plasma devices have an important place among the electrode less cold plasma sources, due to their potential applications in industry. Many different devices of this type are now under research around the world. This paper deals with the design description of a microwave ECR plasma source, in which an overdense plasma will be generated, making use of the plasma Eigen modes to induce wave conversion. (Author). 12 refs, 7 figs

[en] A great variety in retention properties occurs as a result of different methods of preparation of the sorbents. Specific surfaces and porosities, which are mostly connected with the sorption activities, may vary widely. The activation of Al₂O₃, SnO₂ and silica gel, to produce highly active sorbents occurs only if the oxide is contacted with acid immediately after thermal treatment. The efficiency of the separation scheme has been tested using uranium and fission products under static conditions from strongly alkaline aqueous solutions. (author). 14 refs., 3 figs., 2 tabs

[en] A case is described in which recurrent renal cell carcinoma simulated a nearly normal kidney image on the bone scan at the site of previous total nephrectomy. (orig.)