this study at first level focused on definitions and descriptions of  some landfills and landfills sites all around the world and  survey on how important they are for regional governments and responsible in duty  as a very important responsibility for locals and their health. at the second level we had a look on heavy metals concentration which are by many definitions as follows: lead, nickel,...

This paper presents different methods of concentration tests. Some existing methods are reviewed and more thoroughly described. The gaze tracking system developed at the Multimedia Systems Department of the Gdańsk University of Technology is presented and its principle of working is explained. Performed tests of the gaze tracker system show that it could make a useful system for concentration e...

This paper explores the effect of banking market structure on the market structure of industrial sectors. It asks whether concentration in the banking market promotes the formation of industries constituted by a few, large firms, or rather, whether it facilitates the continuous entry of new firms, thus maintaining unconcentrated market structures across industries. Theoretical arguments could b...