Abstract: The present invention generally relates to pH-dependent mutant interleukin-2 polypeptides that exhibit reduced IL-2 receptor binding at neutral pH and retained IL-2 receptor binding at reduced pH. In addition, the invention relates to immunoconjugates comprising said pH-dependent mutant IL-2 polypeptides, polynucleotide molecules encoding the pH-dependent mutant IL-2 polypeptides or immunoconjugates, and vectors and host cells comprising such polynucleotide molecules. The invention further relates to methods for producing the pH-dependent mutant IL-2 polypeptides or immunoconjugates, pharmaceutical compositions comprising the same, and uses thereof.

Abstract: The invention relates to a method for the dry separation of unsorted garbage that contains packaging waste consisting of plastic materials of various polymer groupings that includes the following steps: separation of the materials on the basis of differences in size; separation of the materials on the basis of differences in grain shape, grain size and/or specific weight; separation of the materials on the basis of differences in their magnetic properties; separation of the materials on the basis of differences in their electric properties; and separation of the materials on the basis of differences in their spectroscopic properties.