364 results about "Gaseous substance" patented technology

In a state where a process gas including SF.sub. 6 and O.sub. 2 is supplied in a chamber, a laser light irradiator provided outside the chamber irradiates a laser light onto a substrate. At the portion of the substrate onto which the laser light is irradiated, the material that makes up the substrate is excited and converted into a gaseous substance by reacting with the process gas. The temperature of the substrate placed on a stage is kept at a predetermined temperature since a temperature adjuster supplies a chiller to a coolant flow passage provided inside the stage.

Metallic stents are treated with a gaseous species in a plasma state under conditions causing the species to polymerize and to be deposited in polymerized form on the metallic stent surface prior to the application of a drug-polymer mixture, which is done by conventional non-plasma deposition methods. The drug-polymer mixture once applied forms a coating on the stent surface that releases the drug in a time-release manner and gradually erodes, leaving only the underlying plasma-deposited polymer. In certain cases, the plasma-deposited polymer itself erodes or dissolves into the physiological medium over an extended period of time, leaving only the metallic stent. While the various polymers and drug remain on the stent, the plasma-deposited polymer enhances the adhesion of the drug-polymer anchor coating and maintains the coating intact upon exposure to the mechanical stresses encountered during stent deployment.

An apparatus and method are for disinfection and purification of a liquid, gaseous or solid phase, or a mixture thereof. The apparatus includes: a central electrode, a dielectric layer adjacent to the electrode, a first area adjacent to the dielectric layer, and is configured to introduce a first medium into the first area, a second area adjacent to the first area. The apparatus is also configured to introduce a second medium into the second area, and for creating a plasma in the first medium, while the first medium is present in the first area, by applying a voltage between the first electrode and a second electrode. An injector injects the plasma into the second area, in order to be mixed with the second medium.

Processes and apparatuses are provided for contactless measuring or monitoring in-situ and in real time composition or other electromagnetic impedance correlated properties of liquid or gaseous substances or bulk materials. One or more apparatus may include a resonance type impedance sensor having at least two coils, at least one coil of the at least two coils being at least one excitation coil connectable to at least one alternating current source with frequency sweep, at least one other coil of the at least two coils being at least one sensing coil connectable to at least one data processing system. The one or more methods may include calculating changes in amplitude and resonant frequency induced by electromagnetic interaction between said sensor and object to determine impedance of said object under test; and matching said impedance with predetermined calibration data to determine said chemical or physical properties of said object under test.

A technique for improving ion implanter productivity is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for improving productivity of an ion implanter having an ion source chamber. The method may comprise supplying a gaseous substance to the ion source chamber, the gaseous substance comprising one or more reactive species for generating ions for the ion implanter. The method may also comprise stopping the supply of the gaseous substance to the ion source chamber. The method may further comprise supplying a hydrogen containing gas to the ion source chamber for a period of time after stopping the supply of the gaseous substance.

The invention provides a heat-storage type biomass pyrolysis method and system which can realize large-scale production and has low operation cost and low total energy consumption. The heat-storage type biomass pyrolysis method comprises the following steps: (1) pretreating the biomass: pretreating the raw materials of a biomass to obtain the raw materials which can be used for the pyrolysis of the biomass; (2) subjecting the biomass to pyrolysis: spreading the pretreated raw materials of the biomass on the rotating bottom of a heat-storage type gas radiating tube rotating bed uniformly, making the raw materials of the biomass heated gradually in a sealed spaced along with the rotating of the rotating bottom of a heat-storage type gas radiating tube rotating bed, keeping the raw materials of the biomass at the reaction temperature of 200-800 DEG C for 30-120 minutes, subjecting the raw materials of the biomass to reaction to produce the gaseous substance and the solid biological carbon; and (3) collecting and posttreating the products of pyrolysis; collecting the gaseous substance generated in the step (2), condensing, and separating the pyrolysis gas and the condensible liquid. The pyrolysis gas can be totally or partially used as the fuel of a heat-storage type gas radiating tube, and the discharged solid biological carbon is collected after being quenched and cooled.

A light-assisted sensor and method of light-assisted sensing of gaseous species involves contacting a gaseous medium with a material selected to adsorb on its surface one or more gaseous species of interest and illuminating the surface of the material from a source to induce a change of an electrical property, such as conductivity, of the material in the presence of the one or more gaseous species. The change in the electrical property of the material is measured and can be used to identify and quantify the gaseous species of interest in the gaseous medium.

Disclosed is a process of preparing aromatic hydrocarbons and liquefied petroleum gas (LPG) from a hydrocarbon mixture, in which a non-aromatic compound in the hydrocarbon feedstock mixture is converted into a gaseous material having a large amount of LPG through hydrocracking, and an aromatic compound therein is converted into an oil component having large amounts of benzene, toluene, and xylene (BTX) through dealkylation and transalkylation, in the presence of a catalyst obtained by supporting platinum / bismuth onto a mixture support having zeolite and an inorganic binder. The gaseous product is separated into LPG and a mixture of methane and ethane depending on differences in boiling point through distillation, while the liquid product is separated into benzene, toluene, xylene, and C9+ aromatic compounds depending on differences in boiling point through distillation.

A process and apparatus is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products. The heavy hydrocarbon feed is slurried with a catalyst comprising iron oxide and alumina to form a heavy hydrocarbon slurry and hydrocracked to produce lighter hydrocarbons. The iron oxide and alumina catalyst does not require as much iron content relative to non-gaseous material in the reactor to obtain useable products.

A flavor composition is formed by combining a first precursor composition with a second precursor composition to form a precursor flavor composition. The precursor flavor composition is then subjected to a sufficient temperature to cause one or both of the first and second precursor compositions to undergo at least a partial phase change to a gaseous material. Generally, the first and second precursor compositions are immiscible.

New sensors and methods for qualitative and quantitative analysis of multiple gaseous substances simultaneously with both high selectivity and high sensitivity are provided. The new sensors rely on a characteristic difference in energy between the interaction of a particular substance with a catalyst coated heat transfer device (HTD) and a non-catalyst coated (or one coated with a different catalyst) reference HTD. Molecular detection is achieved by an exothermic or endothermic chemical or physical reaction between the catalytic surface of the sensor and the molecule, tending to induce a temperature change of the sensor. Both high temperature and non-destructive low temperature detection are possible. The magnitude and rate of endothermic or exothermic heat transfer from a specific molecule-catalyst interaction is related to molecular concentration.

An inclined plate coupled membrane bioreactor for treating feed water having excessive level of nutrients in particular chemical oxygen demand and total nitrogen and suspended solids has an aerobic bioreactor for nitrification and aerobic biodegradation in which membranes are submerged for permeate extraction, and an anoxic bioreactor for denitrification within which the inclined plates are outfitted to confine as much anoxic sludge as possible. An air oxygenating and an air scouring are continuously provided to the aerobic bioreactor to maintain a desired aerobic environment and to mitigate membrane fouling while an intermittent air blowing is provided to the anoxic bioreactor to blow out gaseous content generated through denitrification and to rectify the uniformed flow along the inclined plates. The aerobic sludge is recycled to the lower compartment of anoxic bioreactor and the supernatant of anoxic bioreactor is collected as weir effluent and delivered to the downstream aerobic bioreactor. Permeate is intermittently extracted from the membranes by a suction pump. There is no excess sludge withdrawn from the inclined plate coupled membrane bioreactor throughout the experiment.