Abstract: Methods and apparatus are provided for cleaning and passivating laser discharge chambers with plasmas. In one embodiment, an oxygen based plasma is formed in a plasma source external to the laser discharge chamber by applying a radiofrequency signal to oxygen containing gases. The oxygen based plasma is drawn into the laser discharge chamber, where it reacts with contaminants and cleans internal surfaces. After cleaning, a fluorine based plasma is formed in the plasma source and drawn into the laser discharge chamber to passivate internal surfaces. In another embodiment, cleaning with the oxygen based plasma is not used since some level of cleaning is accomplished with the fluorine based plasma. In another embodiment, oxygen based plasmas and fluorine based plasmas are formed in the laser discharge chamber by applying a radiofrequency signal to a laser discharge chamber electrode.

Abstract: Methods and apparatus are provided for cleaning and passivating laser discharge chambers with plasmas. In one embodiment, an oxygen based plasma is formed in a plasma source external to the laser discharge chamber by applying a radiofrequency signal to oxygen containing gases. The oxygen based plasma is drawn into the laser discharge chamber, where it reacts with contaminants and cleans internal surfaces. After cleaning, a fluorine based plasma is formed in the plasma source and drawn into the laser discharge chamber to passivate internal surfaces. In another embodiment, cleaning with the oxygen based plasma is not used since some level of cleaning is accomplished with the fluorine based plasma. In another embodiment, oxygen based plasmas and fluorine based plasmas are formed in the laser discharge chamber by applying a radiofrequency signal to a laser discharge chamber electrode.

Abstract: Methods and apparatus are provided for cleaning and passivating laser discharge chambers with plasmas. In one embodiment, an oxygen based plasma is formed in a plasma source external to the laser discharge chamber by applying a radiofrequency signal to oxygen containing gases. The oxygen based plasma is drawn into the laser discharge chamber, where it reacts with contaminants and cleans internal surfaces. After cleaning, a fluorine based plasma is formed in the plasma source and drawn into the laser discharge chamber to passivate internal surfaces. In another embodiment, cleaning with the oxygen based plasma is not used since some level of cleaning is accomplished with the fluorine based plasma. In another embodiment, oxygen based plasmas and fluorine based plasmas are formed in the laser discharge chamber by applying a radiofrequency signal to a laser discharge chamber electrode.

Abstract: Apparatus for cleaning an object and presenting several fluids to the object for the cleaning. The apparatus has controls for sequentially and separately presenting the fluids to the object and keeping at least some of the fluids separated from each other.

Abstract: Glycopeptide antibiotic A-4696G is produced by culturing Actinoplanes missouriensis mutant strain ATCC 31681 under submerged aerobic fermentation conditions, and is recovered from the fermentation broth by resin adsorption and chromatographic purification. A-4696G inhibits the growth of bacteria pathogenic to man and animals and also enhances the growth of ruminants by increasing feed utilization.

Abstract: Glycopeptide antibiotic A-4696G is produced by culturing Actinoplanes missouriensis mutant strain ATCC 31681 under submerged aerobic fermentation conditions, and is recovered from the fermentation broth by resin adsorption and chromatographic purification. A-4696G inhibits the growth of bacteria pathogenic to man and animals and also enhances the growth of ruminants by increasing feed utilization.

Abstract: Antibiotic A-4696 factors B.sub.1, B.sub.2, B.sub.3, C.sub.1a, C.sub.3, and E.sub.1 are isolated from antibiotic A-4696, the latter being produced by Actinoplanes missouriensis strains ATCC 31680, ATCC 31682, and ATCC 31683 under submerged aerobic conditions in a culture medium and isolated from the fermentation broth by absorption on an ion exchange resin and eluted therefrom at p.sup.H 10.5 with sodium hydroxide. The novel factors are separated by thin layer chromatography and high pressure liquid chromatography and have antimicrobial and growth promotant activity.

Abstract: Antibiotic A-4696 factors B.sub.1, B.sub.2, B.sub.3, C.sub.1a, C.sub.3, and E.sub.1 are isolated from antibiotic A-4696, the latter being produced by Actinoplanes missouriensis strains ATCC 31680, ATCC 31682, and ATCC 31683 under submerged aerobic conditions in a culture medium and isolated from the fermentation broth by absorption on an ion exchange resin and eluted therefrom at p.sup.H 10.5 with sodium hydroxide. The novel factors are separated by thin layer chromatography and high pressure liquid chromatography and have antimicrobial and growth promotant activity.