Low-temperature method for desiliconization of polymetallic slags by ammonium bifluoride solution.

Throughout the period of operation of non-ferrous metal deposits, a significant amount of waste has been accumulated. The accumulated waste contains valuable metals in concentrations that allow considering them as valuable raw materials. However, it is worth noticing the presence of problems that previously did not allow for more complete extraction of the target components.

[Remote results of treatment of chronic duodenal obstruction].

It is the authors' opinion that surgery after the E. V. Smirnov technic yields favourable results in uncomplicated forms of chronic duodenal obstruction.