66 results about "Nitrous oxide gas" patented technology

In a method of forming a layer using an atomic layer deposition process, after a substrate is loaded into a chamber, a reactant is provided onto the substrate to form a preliminary layer. Atoms in the preliminary layer are partially removed from the preliminary layer using plasma formed from an inert gas such as an argon gas, a xenon gas or a krypton gas, or an inactive gas such as an oxygen gas, a nitrogen gas or a nitrous oxide gas to form a desired layer. Processes for forming the desired layer may be simplified. A highly integrated semiconductor device having improved reliability may be economically manufactured so that time and costs required for the manufacturing of the semiconductor device may be reduced.

The invention relates to the technical field of low-concentration gas detection and in particular relates to a trace nitrous oxide gas detection device. The device comprises an infrared laser output module, an N2O absorption gas chamber and a signal processing module, wherein the central wavelength of laser output by the infrared laser output module is matched with the position of an N2O gas absorption peak; the N2O absorption gas chamber comprises a hollow microstructure fiber; micro pores are formed in the peripheral wall of the hollow microstructure fiber along the radial direction; the laser output by the infrared laser output module is transmitted to one end of the hollow microstructure fiber by virtue of a single mode fiber; laser subjected to N2O gas absorption in the hollow microstructure fiber is output to the signal processing module from the other end of the hollow microstructure fiber by virtue of a multimode fiber; and the N2O gas content is calculated by the signal processing module according to the laser loss. The problem that the light path is short is fundamentally solved when the gas concentration is detected by a tunable laser spectral absorption method; and moreover, the transmission loss is avoided, and the accuracy and reliability of the measurement result are improved.

In a decompressed atmosphere and a heating atmosphere, a vapor of a hafnium organic compound is reacted with, e.g., a disilane gas in a reacting vessel, so as to form a hafnium silicate film on a silicon film. By reacting a dichlorosilane gas with a dinitrogen oxide gas, a silicon oxide film as a barrier layer is laminated on the hafnium silicate film. A polysilicon film as a gate electrode is formed on the silicon oxide film.

The invention discloses a system and a method for measuring carbon dioxide, methane and nitrous oxide in air simultaneously. In an analysis part, a gas sample enters a sample introduction unit; a separation unit is connected with the sample introduction unit, and the gas sample enters the separation unit to be separated under the drive of carrier gas through the state change of the sample introduction unit; a detection unit is connected with the separation unit, and the separated sample enters the detection unit to be detected; and a switching unit is connected with the separation unit and the detection unit, and sample components are selectively emptied or detected through the state change of the switching unit. In a drive part, two electronic switches are respectively connected with two electromagnetic valves through electric wires, the air inlets of the two electromagnetic valves are connected with compressed air, and the two electromagnetic valves are respectively connected with a drive cylinder of a pneumatic valve of the sample introduction unit and a drive cylinder of a pneumatic valve of the switching unit through three-way joints; and the electronic switches are regularly switched on or off to change the flow direction of the compressed air in the electromagnetic valves so as to finish the state switching of the sample introduction unit and the switching unit.

The invention relates to a sample machine on the basis of the principle of a nitrous oxide mono-component thruster and a use method thereof. The invention utilizes the characteristics of the nitrous oxide gas such as no toxicity, no pollution, high catalytic decomposition temperature and capability of self-maintaining decomposition reaction, and applies the nitrous oxide gas in the propulsion field of aerospace micro-satellites. Compared with the existing commonly-used hydrazine mono-component thruster, the invention can effectively reduce the risk and cost of land disposal with a propellant, and also can realize higher specific impulse performance compared with the cold gas thruster. The invention can conduct principle demonstration verification for mono-component thruster adopting the nitrous oxide as the propellant, and provide technical support for research and development of a non-toxic micro-thruster applied in posture control of the micro-satellite.

The invention relates to an internal heating nitrous oxide monopropellant gas generator. A high-temperature decomposition product of nitrous oxide gas can be applied by utilizing the characteristics of nontoxicity, non-pollution, high decomposition temperature and self-sustaining decomposition reaction of the nitrous oxide gas. The internal heating nitrous oxide monopropellant gas generator can be taken as a monopropellant thruster to be applied to the attitude control of satellites, and also can be taken as an oxidant source and an ignition device to be applied to the oxidant supply and ignition of a small liquid-propellant rocket engine or a solid-liquid rocket engine. Compared with the internal heating nitrous oxide monopropellant gas generator adopting the conventional external heating preheating mode, the internal heating nitrous oxide monopropellant gas generator adopting the unique heating mode and overall layout can effectively improve heating efficiency, save energy and ensure relatively long service life.

The invention provides for a method of enhancing immunological responses to an antigen in a vaccine formulation, and for a vaccine formulation that provides for an enhanced immunological response to an antigen. In the method and formulation the antigen is administered with an adjuvant which adjuvant comprises a solution of nitrous oxide gas in a pharmaceutically acceptable carrier solvent for the gas and which adjuvant includes at least one fatty acid or ester or other suitable derivative thereof selected from the group consisting of oleic acid, linoleic acid, alpha-linolenic acid, gamma-linolenic acid, arachidonic acid, eicosapentaenoic acid [C20: 5ω3], decosahexaenoic acid [C22: 6ω3], ricinoleic acid and derivatives thereof selected from the group consisting of the C1 to C6 alkyl esters thereof, the glycerol-polyethylene glycol esters thereof and the reaction product of hydrogenated natural oils composed largely of ricinoleic acid based oils, such as castor oil with ethylene oxide.

The invention relates to a nitrogen extracting and purifying device of a nitrogen isotope sample in water. The nitrogen extracting and purifying device comprises a nitrogen bottle (1), a carbon dioxide absorption cold trap A (2), a carbon dioxide absorption cold trap B (5), a water-vapor absorption cold trap (6) and a U-shaped gas sample collector (8), which are successively connected end to end, wherein the gas outlet end of the U-shaped gas sample collector (8) is communicated with a long needle B (19) through a rubber tube, and the long needle B (19) enters below the liquid level in a gas monitoring cup B (10). The device has the advantages that a tedious chemical treatment process is avoided, and the device is time-saving and labor-saving and simple and efficient; the nitrate, nitrite and solubleness nitrogen in the water are completely converted into pure nitrous oxide gas or pure nitrogen which can be completely collected, so that the isotope fractionation is avoided; the CO2 and water-vapor can be removed, and the interference in testing is avoided; the device can be widely applied to the scientific search and production of colleges, scientific research institutions, industrial and mining enterprises, and the like.

A method for purification of a nitrous oxide gas by feeding the nitrous oxide gas and a reducing agent into a de-oxidation reactor, performing de-oxidation by reacting the reducing agent with oxygen using a catalyst in order to deplete the oxygen in the nitrous oxide gas, while limiting the amount of nitrous oxide removed from the nitrous oxide gas.

The invention discloses a device and a method for determining dissolved nitrous oxide in water and relates to detection of dissolved nitrous oxide in water. The device comprises a nitrogen cylinder, a first pressure reducing valve, a second pressure reducing valve, a mass flow controller, a flow meter, a six-way valve, a first three-way valve, a second three-way valve, a Nafion tube, a semiconductor cooler, a scavenging conduit, a trapping tube, a Dwarf can, an electric heating tube, a twelve-way valve, a Kelun pump, a sample bottle, a gas chromatograph and a computer. The method comprises a sample introduction stage, a scavenging stage, a trapping stage, a desorption stage and a separation and detection stage. Short time is consumed, the sensitivity is high, the automation degree is high, the operation is simple, the temperature can be subzero 100 DEG C or lower with adoption of the Dwarf can for accommodating liquid nitrogen to serve as a low-temperature source of the trapping tube, and nitrous oxide gas can be trapped on a molecular sieve completely. The electric heating tube can be heated to the temperature of 100 DEG C or higher within 0.5 min, so that the nitrous oxide gas can be desorbed rapidly to enter the gas chromatograph. The concentration of the nitrous oxide gas can be determined accurately by means of the Kelun pump.

A method of and system for chemical vapor deposition of layers of material on substrates for producing thin film semiconductor devices provides for continuous in-line processing. The method and system are adapted for size and potential speed, and for scaling to further increase the rate of production. The method includes continuously conveying a plurality of substrates through a plurality of in-line deposition regions, continuously providing and distributing a chemical vapor at each region to deposit material for the layer, and continuously supplying a flow of chemical material for each region to provide the chemical vapor. The chemical vapor for deposition at each region covers an area that is substantial for substrates, then, also having a substantial area. The chemical vapor may include an organometallic material, such as diethyl zinc vapor, or dimethyl zinc vapor, as well as a material that provides oxygen, such as water vapor or nitrous oxide gas. It may also include a material that provides a dopant. Thus, the layers of material may be a zinc oxide material. The system includes a continuous in-line substrate conveyance apparatus for moving a plurality of substrates through a plurality of deposition regions, a deposition head for providing and distributing a chemical vapor at each of the regions to deposit material for the layers, and a chemical material supply apparatus for providing a flow of chemical materials to each of the heads for the chemical vapor. The chemical vapor deposition head includes an emission and distribution face at the region for the head, and wall structure defining a first plenum layer having a first plenum and a second plenum layer having a second plenum, for receiving chemical materials from the supply apparatus and for maintaining separation of received chemical materials. The head also includes wall structure defining a third plenum layer having a first set of elongated plenums for receiving chemical material from the first plenum and distributing such chemical material to the emission and distribution face, and a second set of elongated plenums for receiving chemical material from the second plenum and distributing such chemical material to the emission and distribution face. One exemplary number of deposition regions is seven.

The invention belongs to the technical field of water nitrate pollution treatment and control, and in particular relates to a measurement method of nitrogen and oxygen stable isotope of nitrate in seawater. The method comprises the steps of carrying out off-line treatment on the nitrate in the seawater to be measured by denitrifying bacteria without N2O reductase activity, and then converting the treated nitrate into nitrous oxide gas; and carrying out on-line continuous measurement on the nitrogen and oxygen stable isotope by combining a trace gas pre-concentrating apparatus (Precon) and gas chromatography (GC)-isotope ratio mass spectrometer (MS). After the measurement method is used, a culture method of the denitrifying bacteria is optimized, a formula of a culture medium is improved, the nitrate is not added, the cultivation effect is relatively good, the growth of the bacteria is stable, whether the culture medium has the residual nitrate or not after enrichment culture is not required to be tested, and the pollution is not caused in the subsequent sample treatment; the culture medium is good in bacteria enrichment effect, short in bacterial culture period and high in efficiency, and the cultivation cost is reduced.

The invention discloses a set of nitrogen and oxygen isotope analyzer for nitrous oxide gas generated by a denitrifying bacteria method. The nitrogen and oxygen isotope analyzer is characterized in that the device can realize enrichment and purification of the nitrous oxide gas generated by the denitrifying bacteria method, a lot of organic components generated in a reaction process of gas CO2, steam and bacteria are removed, and influences on a test when impurity gas enters a mass spectrometer are avoided; when delta18O/16O and delta15N/14N in the nitrous oxide gas are analyzed and tested, the nitrous oxide gas is introduced into a gas isotope mass spectrometer through high-temperature cracking of the nitrous oxide gas, so that delta15N/14N and delta17O/16O or excess 17O/16O and delta18O/16O of N2 and O2 can be analyzed and determined.

The invention provides a dripping piece preparation method of plant chromosome. The dripping piece preparation method includes steps of placing a plant organ in nitrous oxide gas for pretreatment, and then fixing the plant organ after pretreatment by stationary liquid, and performing enzymolysis on a cell wall of the plant organ by enzyme, and breaking the plant organ after enzymolysis, and preparing the cell suspension liquid; dripping the cell suspension liquid on a glass slide or a cover glass; forming a plant chromosome specimen. The reagent applied to the method is low in toxicity; the crack obtained through treatment is dispersed in a circular or ellipse form by comparing with regular piece making method, the distribution is uniform, and chromosome intersection is few, and dispersing degree is good; a complete chromosome can be obtained; the preparation method can prepare the chromosome slice with stable quality, clear chromosome and good dispersity; the prepared chromosome slice can be applied to cytological identification, manufacturing of permanent slice, hybridization in-situ, microdissection, and microscope separation, and so on.

Hydroxylamine is formed in a reactor through a partial hydrogenation of nitric oxide gas (NO) with hydrogen gas (H₂) in an aqueous medium with nitrogen gas (N₂) as an inert gas. The formation of the hydroxylamine forms nitrous oxide gas (N₂O). The gasses and the water vapor are flowed away from the reactor in a vent gas stream enabling recycling of the gasses. The N₂O is removed from the vent gas stream to reduce flammability. Once the N₂O is removed, the NO, H₂, and N₂ are recycled and re-used in the reactor to form additional hydroxylamine. The N₂O removed from the vent gas stream is of high purity and can be commercially sold or economically discarded.

A method of manufacturing a display device includes preparing an organic light-emitting device and forming an encapsulation member to encapsulate the organic light-emitting device. The forming of the encapsulation member includes forming a first inorganic encapsulation layer on the organic light-emitting device by providing a raw material gas on the organic light-emitting device, forming a first organic encapsulation layer by applying an organic material on the first inorganic encapsulation layer, and forming a second inorganic encapsulation layer on the first organic encapsulation layer. The raw material gas includes a nitrous oxide gas, a nitrogen gas, an ammonia gas, and a hydrogen gas, and a ratio of a sum of flow rates of the nitrous oxide gas and the nitrogen gas to a sum of flow rates of the ammonia gas and the hydrogen gas is about 1.1 or less.

The invention relates to the field of gas purification, in particular to an oxygen adsorbent which comprises a porous silicon dioxide skeleton, and the porous silicon dioxide skeleton is connected with a boron element through a chemical bond; a platinum compound and a low-valence manganese compound are physically loaded on the porous silicon dioxide skeleton. The boron element is connected to the porous silicon dioxide skeleton through chemical bonds, and meanwhile, the low-valence manganese compound is loaded on the surface, so that oxygen in nitrous oxide can be effectively adsorbed, and the purity of nitrous oxide gas is improved. Meanwhile, the oxygen adsorbent has the advantages of being good in activity and capable of being repeatedly used, the oxygen adsorbent is simple in condition in the reactivation process, safe and effective, and purification of industrial electronic gas is quite facilitated.

The invention discloses a nitrogen and oxygen pressurizing system for improving the power performance of an engine. A cylinder 3 of the system is connected with a retaining valve 2 through a pipeline, the retaining valve 2 is connected with a throttle 1, the oil and gas mixture is inputted. The retaining valve 2 is also connected with a gas cylinder 7 through an electromagnetic valve 12, and nitrous oxide gas is inputted. The electromagnetic valve 12 is also connected in signal with an ECU 5 through a first electromagnetic relay 8. The ECU 5 is respectively connected with a temperature sensor 4 arranged on the cylinder 3, a switch electricity source 6 is respectively connected with the temperature sensor 4, the ECU 5, and a second electromagnetic relay 10. The system compulsorily compresses the nitrous oxide gas into the cylinder of the engine; the nitrous oxide gas can release oxygen under a high temperature and a high pressure, and accordingly the oil feeding volume is increased properly, the invention can realize the rising of the power of the engine, and then can provide additional strong power.

The invention relates to an engine flame-out protection control method. The engine flame-out protection control method is characterized by comprising the step that according to a relation table among the atmospheric pressure, the engine target idle speed, the first flame-out protecting rotation speed and the second flame-out protecting rotation speed which are marked in an ECU in advance, the absolute pressure of an engine manifold, the turbocharger pressure, the throttling valve position, the exhaust temperature, the nitrous oxide gas emission concentration and an engine dynameter are determined.