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4956557 Dosimeter for ionizing radiation
New Patents
II
A gas species monitor system includes a sample volume for receiving a gas to be monitored; an external independent laser source; means for directing the laser radiation to the volume; a mu]tipass optical cell, responsive to the means for directing, for multiplying the laser radiation intensity in the sample volume; means for continuously flowing the gas to be monitored through the sample volume; a narrow bandpass filter; means for collecting more than a steradian of Raman scattered radiation from the sample in the volume and directing the collected radiation in parallel through the narrow bandpass filter; and means responsive to the parallel radiation from the filter for detecting the Raman scattered radiation representative of the concentration of the species in the gas sample being monitored.
4956092 METHOD FOR CONCENTRATING• DEHYDRATING OF SEWAGE SLUDGE Holger Blum, D 2000 Hamburg 13, Federal Republic Of Germany In the method for concentrating/dehydrating sewage sludge including activated sludge with the aid of organic polyelectrolytes and/or inorganic flocculators the activated sludge portion is produced in an aerated biologic clearing step in presence of-based on the amount of liquid flowing into the clearing step-5 to 0.01 parts by weight per million parts by weight of at least one compound selected from the group consisting of folic acid, dihydrofolic acid and at least an ammonium alkali metal salt, alkaline earth metal salt and alkanolammonium salt thereof.
4955391 FLUID MONITORING APPARATUS Robert L Parker, Charles G Reed assigned to Invenomed Inc A fluid monitoring apparatus has a canister into which fluid is introduced via an entry port at the top of the canister, a conventional volume measuring assembly within the canister and a flow control assembly that receives the fluid from the entry port and discharges the fluid at a controlled rate into the volume measuring assembly. The canister has a tubular body portion made of transparent plastic on which volume indicia are inscribed and is closed at its ends by a cover plate in which the entry port is formed and a floor plate in which a discharge port is formed. A pump connected to the discharge port is operable for removing fluid from the canister and is flushed with antiseptic solution via a second pump. The flow control assembly has a partition that extends across the interior of the canister and has an upwardly extending flange to form a fluid catchment and an integral funnel that discharges into the volume measuring assembly. A filter is provided across the canister or funnel. A suction port is formed in the cover plate and separated from the entry port by a partition that extends across a perforated cup that is secured to the cover plate about both ports and encircled by a tubular splash shield. Probes, including a pH probe in the cover plate, extend into the canister and an injection port is formed in lower portions of the canister.
4956152 EMISSION CONTROL UNIT James R Keough, Arthur E Miller, Charles Schrader assigned to Electro Statics Inc An emission control unit is mounted in the exhaust line of a fossil fuel internal combustion engine and includes a tubular housing in which a lime sleeve is received. The sleeve has an axial opening through which a corona wire extends. Exhaust gasses pass through the sleeve along the wire. Placing a charge on the wire drives pollutants in the exhaust laterally outwardly into the sleeve at a direction which is 90 degrees to the direction of exhaust travel. The sleeve chemically interacts with the pollutants and neutralizes them with little hazard to the environment.
4956557 DOSIMETER FOR IONIZING RADIATION Hugo Vlasbloem, Maasland, Netherlands assigned to B V Optische Industrie de Oude There is disclosed a dosimeter to be used in connection with slit radiography and comprised of a gas filled chamber with one side wall provided with a plurality of X-ray transparent strip-like electrodes extending substantially transversely
New Patents to a longitudinal direction of the oblong-shaped casing and another side wall provided with wire electrodes extending parallel to such longitudinal direction of the oblong-shaped casing wherein each of the strip-like electrodes generates a signal representative of intensity of ionizing radiation and wherein the strip-like electrodes are divided into a number of groups, signals from the strip-like electrodes belonging to each group are combined to provide a control signal for a respective attenuation element.
4957049 ORGANIC WASTE FUEL COMBUSTION SYSTEM INTEGRATED WITH A GAS TURBINE COMBINED CYCLE Charle Strohmeyer assigned to Electrodyne Research Corp The invention comprising an organic waste fuel combustion and tempering gas flow control system integrated with a gas turbine combined cycle steam generating plant. The gas turbine exhaust, wherein the oxygen content is partially consumed is used to dry and support combustion of an organic fuel high in moisture content after said fuel has been dewatered and pelletized. A portion of the gas turbine exhaust gas stream dries the pelletized waste fuel while a parallel portion of the gas turbine hot gas stream is used to support combustion and furnish oxygen in the ignition zone of the pelletized waste combustor. The drying stream also tempers secondary combustion gas temperature. The two gas streams are combined downstream of the combustion zone. The regenerated combined stream is then utilized in a steam generating section to generate steam. The gas turbine exhaust flow provides the mass flow and heat required for drying and combusting the pelletized waste fuel and the heat input from the pellet firing system regenerates the gas turbine exhaust gas stream. The pellet combustion process is maintained at temperature levels which avoid formation of deleterious products of combustion during the incineration process.
4958075 GAS ANALYZER Leslie E Mace, Daniel W Knodle, Lawrence L Labuda, Philip F Nuzzo assigned to NTC Technology Inc
HI
Sampling attachments or systems for infrared gas analyzers of the non-dispersive type. Major components of the system include a sampling device or cuvette, a vacuum pump for effecting a flow of the gases to be analyzed through the cuvette, a microprocessor based pump control, and a switch which is closed and allows the pump to be turned on only if an appropriate sampling cuvette is connected up to the pump. The sampling attachments are designed for medical applications-to provide readings of tidal carbon dioxide, for example. They have a minimally invasive nasal cannula for collecting the gases which are to be subjected to analysis; viz., those exhaled by a patient. These gases are conducted to the cuvette through a line which is gastight but allows moisture to escape, thereby keeping moisture mixed with the gases being analyzed from corrupting the readings outputted by the gas analyzer. The attachment can be easily and quickly disassembled and the components disposed of or sterilized and recycled if they become contaminated. Provision is made for collecting the gases after they have been discharged from the cuvette so that they will not be discharged into and perhaps contaminate the ambient surroundings.
4958529 INTERFACE FOR COUPLING LIQUID CHROMATOGRAPHY TO SOLID OR GAS PHASE DETECTORS Marvin Vestal assigned to Vestec Corporation An improved interface is provided for receiving effluent from a chromatographic device and outputting sample particles of interest to a detector for analysis. The interface includes a gas diffusion cell having a membrane therein separating the cell into an aerosol flow chamber and a sweep gas flow chamber. The effluent is sprayed as an aerosol into the aerosol flow chamber, and vaporized solvent diffuses through the gas membrane into the sweep gas flow chamber while particles of interest are output to the detector. Sweep gas is passed through the sweep gas flow chamber for removing the solvent vapor, and the flow rate of sweep gas is controlled to achieve little or no net flow of gas across the membrane. Efficient solvent removal may be achieved at room temperature for certain LC flow rates, and high detector resolution is possible by maintaining laminar flow of the carrier gas through the aerosol flow chamber.
II
A gas species monitor system includes a sample volume for receiving a gas to be monitored; an external independent laser source; means for directing the laser radiation to the volume; a mu]tipass optical cell, responsive to the means for directing, for multiplying the laser radiation intensity in the sample volume; means for continuously flowing the gas to be monitored through the sample volume; a narrow bandpass filter; means for collecting more than a steradian of Raman scattered radiation from the sample in the volume and directing the collected radiation in parallel through the narrow bandpass filter; and means responsive to the parallel radiation from the filter for detecting the Raman scattered radiation representative of the concentration of the species in the gas sample being monitored.
4956092 METHOD FOR CONCENTRATING• DEHYDRATING OF SEWAGE SLUDGE Holger Blum, D 2000 Hamburg 13, Federal Republic Of Germany In the method for concentrating/dehydrating sewage sludge including activated sludge with the aid of organic polyelectrolytes and/or inorganic flocculators the activated sludge portion is produced in an aerated biologic clearing step in presence of-based on the amount of liquid flowing into the clearing step-5 to 0.01 parts by weight per million parts by weight of at least one compound selected from the group consisting of folic acid, dihydrofolic acid and at least an ammonium alkali metal salt, alkaline earth metal salt and alkanolammonium salt thereof.
4955391 FLUID MONITORING APPARATUS Robert L Parker, Charles G Reed assigned to Invenomed Inc A fluid monitoring apparatus has a canister into which fluid is introduced via an entry port at the top of the canister, a conventional volume measuring assembly within the canister and a flow control assembly that receives the fluid from the entry port and discharges the fluid at a controlled rate into the volume measuring assembly. The canister has a tubular body portion made of transparent plastic on which volume indicia are inscribed and is closed at its ends by a cover plate in which the entry port is formed and a floor plate in which a discharge port is formed. A pump connected to the discharge port is operable for removing fluid from the canister and is flushed with antiseptic solution via a second pump. The flow control assembly has a partition that extends across the interior of the canister and has an upwardly extending flange to form a fluid catchment and an integral funnel that discharges into the volume measuring assembly. A filter is provided across the canister or funnel. A suction port is formed in the cover plate and separated from the entry port by a partition that extends across a perforated cup that is secured to the cover plate about both ports and encircled by a tubular splash shield. Probes, including a pH probe in the cover plate, extend into the canister and an injection port is formed in lower portions of the canister.
4956152 EMISSION CONTROL UNIT James R Keough, Arthur E Miller, Charles Schrader assigned to Electro Statics Inc An emission control unit is mounted in the exhaust line of a fossil fuel internal combustion engine and includes a tubular housing in which a lime sleeve is received. The sleeve has an axial opening through which a corona wire extends. Exhaust gasses pass through the sleeve along the wire. Placing a charge on the wire drives pollutants in the exhaust laterally outwardly into the sleeve at a direction which is 90 degrees to the direction of exhaust travel. The sleeve chemically interacts with the pollutants and neutralizes them with little hazard to the environment.
4956557 DOSIMETER FOR IONIZING RADIATION Hugo Vlasbloem, Maasland, Netherlands assigned to B V Optische Industrie de Oude There is disclosed a dosimeter to be used in connection with slit radiography and comprised of a gas filled chamber with one side wall provided with a plurality of X-ray transparent strip-like electrodes extending substantially transversely
New Patents to a longitudinal direction of the oblong-shaped casing and another side wall provided with wire electrodes extending parallel to such longitudinal direction of the oblong-shaped casing wherein each of the strip-like electrodes generates a signal representative of intensity of ionizing radiation and wherein the strip-like electrodes are divided into a number of groups, signals from the strip-like electrodes belonging to each group are combined to provide a control signal for a respective attenuation element.
4957049 ORGANIC WASTE FUEL COMBUSTION SYSTEM INTEGRATED WITH A GAS TURBINE COMBINED CYCLE Charle Strohmeyer assigned to Electrodyne Research Corp The invention comprising an organic waste fuel combustion and tempering gas flow control system integrated with a gas turbine combined cycle steam generating plant. The gas turbine exhaust, wherein the oxygen content is partially consumed is used to dry and support combustion of an organic fuel high in moisture content after said fuel has been dewatered and pelletized. A portion of the gas turbine exhaust gas stream dries the pelletized waste fuel while a parallel portion of the gas turbine hot gas stream is used to support combustion and furnish oxygen in the ignition zone of the pelletized waste combustor. The drying stream also tempers secondary combustion gas temperature. The two gas streams are combined downstream of the combustion zone. The regenerated combined stream is then utilized in a steam generating section to generate steam. The gas turbine exhaust flow provides the mass flow and heat required for drying and combusting the pelletized waste fuel and the heat input from the pellet firing system regenerates the gas turbine exhaust gas stream. The pellet combustion process is maintained at temperature levels which avoid formation of deleterious products of combustion during the incineration process.
4958075 GAS ANALYZER Leslie E Mace, Daniel W Knodle, Lawrence L Labuda, Philip F Nuzzo assigned to NTC Technology Inc
HI
Sampling attachments or systems for infrared gas analyzers of the non-dispersive type. Major components of the system include a sampling device or cuvette, a vacuum pump for effecting a flow of the gases to be analyzed through the cuvette, a microprocessor based pump control, and a switch which is closed and allows the pump to be turned on only if an appropriate sampling cuvette is connected up to the pump. The sampling attachments are designed for medical applications-to provide readings of tidal carbon dioxide, for example. They have a minimally invasive nasal cannula for collecting the gases which are to be subjected to analysis; viz., those exhaled by a patient. These gases are conducted to the cuvette through a line which is gastight but allows moisture to escape, thereby keeping moisture mixed with the gases being analyzed from corrupting the readings outputted by the gas analyzer. The attachment can be easily and quickly disassembled and the components disposed of or sterilized and recycled if they become contaminated. Provision is made for collecting the gases after they have been discharged from the cuvette so that they will not be discharged into and perhaps contaminate the ambient surroundings.
4958529 INTERFACE FOR COUPLING LIQUID CHROMATOGRAPHY TO SOLID OR GAS PHASE DETECTORS Marvin Vestal assigned to Vestec Corporation An improved interface is provided for receiving effluent from a chromatographic device and outputting sample particles of interest to a detector for analysis. The interface includes a gas diffusion cell having a membrane therein separating the cell into an aerosol flow chamber and a sweep gas flow chamber. The effluent is sprayed as an aerosol into the aerosol flow chamber, and vaporized solvent diffuses through the gas membrane into the sweep gas flow chamber while particles of interest are output to the detector. Sweep gas is passed through the sweep gas flow chamber for removing the solvent vapor, and the flow rate of sweep gas is controlled to achieve little or no net flow of gas across the membrane. Efficient solvent removal may be achieved at room temperature for certain LC flow rates, and high detector resolution is possible by maintaining laminar flow of the carrier gas through the aerosol flow chamber.