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5185129 Ozone monitors
New Patents der conditions sufficient to convert the N 2 0 into gaseous nitrogen and gaseous oxygen.
5171694 METHOD FOR MONITORING AQUEOUS CARBON DIOXIDE Dennis J Connolly assigned to The Babcock & Wilcox Company An apparatus and method for the measurement of low levels of carbon dioxide in a sample employing membrane separation and ion-exchange technology. The difference in acid strength of carbonic acid and other acids is exploited by first treating the sample with a weak base in a membrane separator and then with a strong base in the membrane separator. In this manner, the carbonic acid is distinguished from the stronger acids. By converting carbonic acid to sodium carbonate, the conductivity level is enhanced facilitating more precise measurements.
XIII
absorbing calorimeters. The gamma ray energy absorbed is converted into heat and such heat is measured or indicated for the purpose of monitoring expected radioactive decay processes of the stored radioactive materials. Material leakage or removal from storage is detected and defined by deviations from the normal expected decay in gamma radiation. Such deviation or lack of deviation, as the case may be, provide the desired accountability of the radioactive materials. Since there can be several bands of gamma ray radiation, both flux and its energy level may be determined by using different gamma absorbing materials in the calorimeters selected for the known possible energy levels of the decaying radioactive material. From n simultaneous heat balance equations one for each calorimeter having a different absorbing material, it is possible to measure the energy level of the gamma radiation flux at each calorimeter.
5185129 OZONE MONITORS
5185007 SUCTION DRAINAGE INFECTION CONTROL SYSTEM James F Middaugh, Peter Bryant, Richard W Grabenkort, Timothy Oswald, Edward S Tripp assigned to Abbott Laboratories A suction drainage control system wherein waste-treating material is released into a sealed chamber. The chamber comprises of a cover with a flexible liner sealed to and suspended therefrom. A normally closed reservoir is provided on an underside of the cover for storing the wastetreating material therewithin as long as the reservoir remains closed. An externally operated actuator is provided on the cover for opening the reservoir to release the waste-treating material into the sealed chamber.
5185122 GAMMA RAY FLUX MEASUREMENT SYSTEM Heinz F Poppendiek, John A Lundin assigned to Geoscience Ltd Gamma radiation leaving the surface of a radioactive materials storage vessel is measured and monitored using a plurality of gamma ray
Petros Koutrakis, Jack M Wolfson assigned to President and Fellows of Harvard College An ozone monitor including an ozone reactive surface, held within a container, which is adapted to specifically react with ozone. The surface is also adapted to fail to react with nitrogen dioxide in an amount which affects ozone quantitation by more than 20% when the nitrogen dioxide is provided at a concentration of 76 ppb and ozone is provided at a concentration of 30 ppb within a test gas.
5185305 CATALYST SYSTEM FOR TREATING THE EXHAUST FROM A LEAN-BURN GASOLINEFUELED ENGINE Somasundaram Subramanian, Mohinder Chattha assigned to Ford Motor Company
S
A catalyst system for converting NOx, CO, and HC contained in the exhaust gas from a gasolinefueled engine controlled to operate under leanburn conditions (R=0.03-0.9) such that the a ratio of NOx to HC in the exhaust gas in in the range of 1/3 to 3/1 (i.e., minimum C3H6 of 250 ppm and NOx of 200-400 ppm). The system comprises a first stage catalyst containing a transition metal-exchanged zeolite (i.e., Cu-
5171694 METHOD FOR MONITORING AQUEOUS CARBON DIOXIDE Dennis J Connolly assigned to The Babcock & Wilcox Company An apparatus and method for the measurement of low levels of carbon dioxide in a sample employing membrane separation and ion-exchange technology. The difference in acid strength of carbonic acid and other acids is exploited by first treating the sample with a weak base in a membrane separator and then with a strong base in the membrane separator. In this manner, the carbonic acid is distinguished from the stronger acids. By converting carbonic acid to sodium carbonate, the conductivity level is enhanced facilitating more precise measurements.
XIII
absorbing calorimeters. The gamma ray energy absorbed is converted into heat and such heat is measured or indicated for the purpose of monitoring expected radioactive decay processes of the stored radioactive materials. Material leakage or removal from storage is detected and defined by deviations from the normal expected decay in gamma radiation. Such deviation or lack of deviation, as the case may be, provide the desired accountability of the radioactive materials. Since there can be several bands of gamma ray radiation, both flux and its energy level may be determined by using different gamma absorbing materials in the calorimeters selected for the known possible energy levels of the decaying radioactive material. From n simultaneous heat balance equations one for each calorimeter having a different absorbing material, it is possible to measure the energy level of the gamma radiation flux at each calorimeter.
5185129 OZONE MONITORS
5185007 SUCTION DRAINAGE INFECTION CONTROL SYSTEM James F Middaugh, Peter Bryant, Richard W Grabenkort, Timothy Oswald, Edward S Tripp assigned to Abbott Laboratories A suction drainage control system wherein waste-treating material is released into a sealed chamber. The chamber comprises of a cover with a flexible liner sealed to and suspended therefrom. A normally closed reservoir is provided on an underside of the cover for storing the wastetreating material therewithin as long as the reservoir remains closed. An externally operated actuator is provided on the cover for opening the reservoir to release the waste-treating material into the sealed chamber.
5185122 GAMMA RAY FLUX MEASUREMENT SYSTEM Heinz F Poppendiek, John A Lundin assigned to Geoscience Ltd Gamma radiation leaving the surface of a radioactive materials storage vessel is measured and monitored using a plurality of gamma ray
Petros Koutrakis, Jack M Wolfson assigned to President and Fellows of Harvard College An ozone monitor including an ozone reactive surface, held within a container, which is adapted to specifically react with ozone. The surface is also adapted to fail to react with nitrogen dioxide in an amount which affects ozone quantitation by more than 20% when the nitrogen dioxide is provided at a concentration of 76 ppb and ozone is provided at a concentration of 30 ppb within a test gas.
5185305 CATALYST SYSTEM FOR TREATING THE EXHAUST FROM A LEAN-BURN GASOLINEFUELED ENGINE Somasundaram Subramanian, Mohinder Chattha assigned to Ford Motor Company
S
A catalyst system for converting NOx, CO, and HC contained in the exhaust gas from a gasolinefueled engine controlled to operate under leanburn conditions (R=0.03-0.9) such that the a ratio of NOx to HC in the exhaust gas in in the range of 1/3 to 3/1 (i.e., minimum C3H6 of 250 ppm and NOx of 200-400 ppm). The system comprises a first stage catalyst containing a transition metal-exchanged zeolite (i.e., Cu-