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5556743 Method for immobilizing dye on substrates
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PATENT A BSTRACTS
electrode; keeping a potential applied to the working electrodes at a first potential of substantially zero for a first preset time; applying a second potential that is higher than a hydrogen peroxide detect potential to the working electrodes for a second preset time; dropping the second potential to a third potential below zero potential; and sweeping from the first potential to a fourth potential higher than said hydrogen peroxide detect potential at a fixed rate. Other variations of the method are disclosed.
5556536 B A C T E R I A L BED Turk Philip E Galveston, TX, UNITED STATES Assigned to Board of Regents The University of Texas System A process and system for the reduction of nitrate to nitrogen in a fluid medium. Anaerobic bacteria fed by a carbon source are used for nitrate reduction. The addition rate of the carbon source and process residence time are controlled using the oxidation-reduction potential of the fluid medium to achieve a desired level of nitrate reduction. An industrial process control system may be used to monitor inputs and control outputs. A column of suspended beads may be used as the anaerobic bacterial bed for denitrification.
5556743 M E T H O D FOR IMMOBILIZING DYE ON SUBSTRATES Gibboni David J; Law Wai T Drexel Hill, PA, UNITED STATES Assigned to ActiMed Laboratories lnc A dye is covalently bound to a polymeric film, especially a polyhydric polymer, for assays and other purposes. The dye may be one which, when it comes into contact with hydrogen peroxide, changes color to indicate the presence of hydrogen peroxide. This dyed film may be used in qualitative or quantitative assays. This method chemically immobilizes dyes on support matrices with much higher yields of immobilized dye than has heretofore been possible. The covalently immobilized dye may be immobilized on solid matrix particles and combined with a free-flowing dye component to form a two component dye system. By combining a dyed film-former with a film-opener, the amount of dye available for assay is greatly enhanced. This provides a dye system which can be used to detect and measure quantitatively, accurately and precisely high levels of hydrogen peroxide. These high levels of hydrogen peroxide may result from the enzyme-mediated decomposition of various analytes from undiluted whole blood samples.
5556744 5556538 DENITRIFICATION SYSTEM Beard Gary J; Beard Harold J Baton Rouge, LA, UNITED STATES A denitrification apparatus, for use in a wastewater treatment system having a mixed liquor source, is disclosed. The apparatus has at least two non-aerated continuous channels, connected in series. Wastewater flows from the mixed liquor source into the series of channels and then flows back into the mixed liquor source. In a preferred embodiment the inlets and outlets for each channel are arranged so that the flow into the channel is into the lower portion of the channel, and the flow from the channel is from the upper portion.
M E T H O D S AND COMPOSITIONS FOR DIAGNOSING AND TREATING CERTAIN HIV INFECTED PATIENTS Weiner David B; Ugen Kenneth E: Williams William V Merion Station, PA, UNITED STATES Assigned to The Trustees of the University of Pennsylvania; The Wistar Institute of Anatomy & Biology The present invention provides a panel of H1V peptides useful in diagnosing whether or not a patient is of vertical HIV transmission status, methods for diagnosing same, methods for identifying epitopes and peptides associated with non-transmission status, and pharmaceutical and vaccine compositions containing same.
PATENT A BSTRACTS
electrode; keeping a potential applied to the working electrodes at a first potential of substantially zero for a first preset time; applying a second potential that is higher than a hydrogen peroxide detect potential to the working electrodes for a second preset time; dropping the second potential to a third potential below zero potential; and sweeping from the first potential to a fourth potential higher than said hydrogen peroxide detect potential at a fixed rate. Other variations of the method are disclosed.
5556536 B A C T E R I A L BED Turk Philip E Galveston, TX, UNITED STATES Assigned to Board of Regents The University of Texas System A process and system for the reduction of nitrate to nitrogen in a fluid medium. Anaerobic bacteria fed by a carbon source are used for nitrate reduction. The addition rate of the carbon source and process residence time are controlled using the oxidation-reduction potential of the fluid medium to achieve a desired level of nitrate reduction. An industrial process control system may be used to monitor inputs and control outputs. A column of suspended beads may be used as the anaerobic bacterial bed for denitrification.
5556743 M E T H O D FOR IMMOBILIZING DYE ON SUBSTRATES Gibboni David J; Law Wai T Drexel Hill, PA, UNITED STATES Assigned to ActiMed Laboratories lnc A dye is covalently bound to a polymeric film, especially a polyhydric polymer, for assays and other purposes. The dye may be one which, when it comes into contact with hydrogen peroxide, changes color to indicate the presence of hydrogen peroxide. This dyed film may be used in qualitative or quantitative assays. This method chemically immobilizes dyes on support matrices with much higher yields of immobilized dye than has heretofore been possible. The covalently immobilized dye may be immobilized on solid matrix particles and combined with a free-flowing dye component to form a two component dye system. By combining a dyed film-former with a film-opener, the amount of dye available for assay is greatly enhanced. This provides a dye system which can be used to detect and measure quantitatively, accurately and precisely high levels of hydrogen peroxide. These high levels of hydrogen peroxide may result from the enzyme-mediated decomposition of various analytes from undiluted whole blood samples.
5556744 5556538 DENITRIFICATION SYSTEM Beard Gary J; Beard Harold J Baton Rouge, LA, UNITED STATES A denitrification apparatus, for use in a wastewater treatment system having a mixed liquor source, is disclosed. The apparatus has at least two non-aerated continuous channels, connected in series. Wastewater flows from the mixed liquor source into the series of channels and then flows back into the mixed liquor source. In a preferred embodiment the inlets and outlets for each channel are arranged so that the flow into the channel is into the lower portion of the channel, and the flow from the channel is from the upper portion.
M E T H O D S AND COMPOSITIONS FOR DIAGNOSING AND TREATING CERTAIN HIV INFECTED PATIENTS Weiner David B; Ugen Kenneth E: Williams William V Merion Station, PA, UNITED STATES Assigned to The Trustees of the University of Pennsylvania; The Wistar Institute of Anatomy & Biology The present invention provides a panel of H1V peptides useful in diagnosing whether or not a patient is of vertical HIV transmission status, methods for diagnosing same, methods for identifying epitopes and peptides associated with non-transmission status, and pharmaceutical and vaccine compositions containing same.