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Pharmacia Ab

Anders Persson

Martin Berglund

Andreas Castan

Greger Thornell

Barbro Hemmendorff

A miniaturized plasma source includes a stripline split-ring resonator. The split-ring resonator is sandwiched between two dielectric substrates and two metal ground planes. In order to make the plasma accessible from the outside of the ground planes, a hole is made through the gap between the ends of the split ring. The two ground planes act as an electromagnetic shield, protecting the split-ring resonator from electromagnetic interference due to changes in the electric or dielectric environment surrounding it. The miniaturized plasma source is particularly useful in optogalvanic spectroscopy applications.

Split-ring resonator plasma source

A device for preventing sedimentation by regulating the flow of waste water through drain draining-wells, with or without a pump. The device has of a swirl chamber with connected outlet pipe and provided with an air injector. The swirl chamber which is tapered, generates a vortex flow in which the air added by the air injector gives the sludge particles a certain amount of buoyancy, making it easier for them to accompany the water flow without being precipitated.

Swirl chamber with movable non-return valve and air injector for prevention of sedimentation in storm water and waste drains

Methods for the production of recombinant peptides comprise fermenting cells to produce recombinant peptides. A metal salt is added to a concentrate of the fermented cells after the fermentation step, prior to peptide isolation, and the pH of the cell concentrate after the addition of the metal salt is less than or equal to 7, thereby reducing the amount of trifulsides formed in the production of the recombinant peptide, with the proviso that the production does not include conversion of formed trifulside peptide into native peptide form after the addition of the metal salt. In one embodiment, the recombinant peptide is recombinant growth hormone.

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Uppsala, Sweden

Anders Persson