75results about How to "Raise oxygen partial pressure" patented technology

The invention discloses a hot end environment experimental-analogic method and device for a kind of aviation engine material. The invention carries on thermal shock simulation by using constant gas temperature to change the sample position, carries on accelerating simulation by using oxygen, water and salt water solution to change the gas composition. The invention combines the normal pressure subsonic velocity air tunnel and material performance testing machine, the invention uses the silicon nitride and silicon carbonate ceramic as the linings of the combustion chamber to upgrades the high temperature resisting level of the combustion chamber. The structure of sample bracket, rotary chain, and rotary handle can carry on hot shock simulation. There distributes with gas apertures and water apertures around the combustion chamber, it can upgrade the high oxygen partial pressure and the water partial pressure, it upgrades the melted salt partial pressure through salt dissolved in the water. The invention has a high simulating temperature, short time, and it is safe.

Method for processing an article comprising mixed conducting metal oxide material. The method comprises contacting the article with an oxygen-containing gas and either reducing the temperature of the oxygen-containing gas during a cooling period or increasing the temperature of the oxygen-containing gas during a heating period; during the cooling period, reducing the oxygen activity in the oxygen-containing gas during at least a portion of the cooling period and increasing the rate at which the temperature of the oxygen-containing gas is reduced during at least a portion of the cooling period; and during the heating period, increasing the oxygen activity in the oxygen-containing gas during at least a portion of the heating period and decreasing the rate at which the temperature of the oxygen-containing gas is increased during at least a portion of the heating period.

The invention provides a tailored blank laser welding method for hot-formed steel with Al-Si plating. The method comprises steps as follows: tailored welding is performed on a hot-formed steel plate with the Al-Si plating under the condition of shielding gas by laser welding equipment; and the shielding gas includes mixed gas of one or two of oxygen and carbon dioxide and inert gas. In the tailored welding process, the mixed gas of one or two of the oxygen and the carbon dioxide and the inert gas is used as the shielding gas, the oxygen partial pressure in a welding pool is increased, Al and O elements entering the welding pool are combined to form Al2O3 which does not affect the strength and toughness of a weld joint, Al and Fe elements are inhibited from forming an intermetallic compound and affecting austenitic phase transformation, a weld joint zone with the all slat martensitic structure is obtained finally, and the strength of the weld joint reaches the level of base metal. With the method, welding wires are not required to be added, plating removal before welding is also not required, the method is simple, the production efficiency is improved, and the production cost is reduced.

The present invention is directed to a novel methods and compositions for the therapeutic intervention in persistent pulmonary hypertension of the newborn (PPHN). More specifically, the specification describes methods and compositions for treating various types of PPHN using compositions comprising BH4. Combination therapies of BH4 and other therapeutic regimens are contemplated.

The invention discloses a magnesium-chrome composite spinel brick which is made from synthetical magnesium-chrome spinel sand, magnesia, chromium concentrate and chrome oxide according the weight percentages as follows: taking 65 percent to 70 percent of MgO, 20 percent to 25 percent of Cr2O3, 0.5 percent to 1.2 percent of SiO2, 4 percent to 6 percent of Fe2O3, 2 percent to 4 percent of Al2O3 and 0.5 percent to 1.2 percent of CaO to the material of the number one synthetical magnesium-chrome spinel sand; taking 55 percent to 60 percent of MgO, 30 percent to 35 percent of Cr2O3, 0.5 percent to 1.2 percent of SiO2, 4 percent to 6 percent of Fe2O3, 2 percent to 4 percent of Al2O3 and 0.5 percent to 1.2 percent of CaO to the material of the number two synthetical magnesium-chrome spinel sand; taking 70 percent to 75 percent of MgO, 14 percent to 19 percent of Cr2O3, 0.8 percent to 1.2 percent of SiO2, 4.5 percent to 7 percent of Fe2O3, 2 percent to 4 percent of Al2O3 and 0.8 percent to 1.5 percent of CaO to the material of the number three synthetical magnesium-chrome spinel sand; taking 97 percent to 98.5 percent of MgO, 0.5 percent to 1.3 percent of SiO2, 0.5 percent to 1.3 percent of CaO and 0.2 percent to 0.5 percent of Fe2O3 to the material of the magnesia; taking 50 percent to 60 percent of Cr2O3, 9 percent to 15 percent of MgO, 0.3 percent to 1.5 percent of SiO2, 15 percent to 25 percent of Fe2O3 and 8 percent to 15 percent of Al2O3 to the material of the chromium concentrate; taking 92 percent to 96 percent of Cr2O3 and 4 percent to 8 percent of ZrO to the material of the chrome oxide. The invention has the advantage of having the characteristics of compact structure, thermal shock resistance, anti-scaling off, erosion resistance etc.

In a regenerative-combustion heating furnace provided with at least a pair of regenerative burners, regenerators of the regenerative burners or exhaust gas discharge pipes and the like for discharging a combustion exhaust gas are prevented from corroding when the paired regenerative burners are in operation stop. [Solution] In a heating furnace 10 provided with at least a pair of regenerative burners 20 each including a burner portion 21 equipped with a fuel injection nozzle 25 and a regenerator 22 accommodating a heat storage material 22a, 22b therein, when combusting and heat storing operations in the paired regenerative burners are stopped, a combustion air is temporarily supplied to a regenerative burner 20b which is performing, at the time of operation stop, an operation of introducing the combustion exhaust gas into the regenerator 22 and allowing the heat storage material 22b to store heat from the combustion exhaust gas before discharging the combustion exhaust gas.

A system for improving the air quality in a pressure cabin of an aircraft includes a recirculation air circuit in which a portion of the cabin air, referred to as recirculation air, is withdrawn from the pressure cabin, filtered and then recirculated into the pressure cabin. To increase the oxygen partial pressure of the air fed back into the pressure cabin, the quantity of recirculation air is passed wholly or partially through a nitrogen generator which generates nitrogen and an oxygen-containing waste gas from the recirculation air supplied. The oxygen-containing waste gas of the nitrogen generator, together with any remaining quantity of recirculation air untreated by the nitrogen generator, is recirculated into the pressure cabin. The nitrogen generator, to which only recirculation air is supplied, utilizes a pressure gradient existing in flight between the pressure cabin and the outside of the aircraft for nitrogen generation.

A portable oxygen enriching device for highland respiration is composed of a face mask, an oxygen-enriching unit with a pressurizer communicated with atmosphere and a power supply (battery unit), and a buffering tube. It features that when ambient temp is lower than -18 deg.C, said battery unit can be put in the pocket of human underwear and electrically connected to the pressurizer for normal power supplying.

The invention discloses silver-iodide-doped bioactive glass as well as a preparation method and an application of the silver-iodide-doped bioactive glass. The weight ratio of the silver iodide of silver-iodide-doped bioactive glass to the silver iodide of non-silver-iodide-doped bioactive glass is (90-100) to (1-10). The preparation method comprises the following steps of: weighing silver nitrate, potassium iodide and iodine according to a weight ratio of AgI; adding the non-silver-iodide-doped bioactive glass into absolute ethanol, ultrasonically processing, and fully dispersing; adding silver nitrate at first and then adding potassium iodide and iodine; uniformly ultrasonically stirring, centrifuging, filtering, washing deposits by de-ionized water, carrying out freeze drying, grinding, and sieving to obtain the silver-iodide-doped bioactive glass. The silver-iodide-doped bioactive glass is applied to preparation of drugs for preventing and treating various diseases. The silver-iodide-doped bioactive glass can be used for effectively promoting healing of human hard and soft tissue injury and inhibiting/killing bacteria, contains bioactive glass particles and silver iodide crystals, and is convenient to store, carry and use.

The invention provides an ethoxyl starch 130/0.4 sodium chloride injection, in which, 20-80g of ethoxyl starch 130/0.4 and 5-13g of sodium chloride is include in per litre injection. The invention further provides the preparing method and application of the injection. The ethoxyl starch 130/0.4 in the raw material of the medicine in the invention is an improved product of 'heas' used clinically for treating and preventing hypovolemia, acute normovolemic hemodilution and so on. A better normovolemic therapeutic effect is achieved by optimizing molecular weight and molecular weight distribution, reducing displacement grade and changing displacement manner (C2/C6); it can stays in blood for longer time after intravenous drip, consequently, can increase plasma osmotic pressure, tissue fluid back-flow and blood volume, can improve oxygenation condition in or after major operation evidently, and can increase tissue oxygen partial pressure and improve tissue oxygenation faster and earlier, thereby can satisfy the clinic demand better.

Method for processing an article comprising a mixed conducting metal oxide material, which method comprises (a) contacting the article with an oxygen-containing gas and reducing or increasing the temperature of the oxygen-containing gas; (b) when the temperature of the oxygen-containing gas is reduced, reducing the oxygen activity in the oxygen-containing gas; and (c) when the temperature of the oxygen-containing gas is increased, increasing the oxygen activity in the oxygen-containing gas.

The invention discloses a high-nickel ternary single crystal material and a preparation method thereof. The preparation method includes the steps that after a material precursor synthesis process is controlled and a precursor is subjected to smashing and grading treatment, the precursor and a lithium source are mixed and then subjected to low-temperature dehydration to obtain a pre-oxide, and thenthe pre-oxide is subjected to high-temperature sintering through a dynamic rotary furnace to obtain the high-nickel ternary single crystal material. Compared with a traditional synthesis method, themethod has the advantages that the internally loose and porous precursor can be rapidly synthesized, the specific surface area of the reaction of the material and the lithium source is increased through crushing and grading, the lithiation ratio of the lithium source to the precursor can be effectively reduced, and the usage amount of the lithium source is reduced; the sintering temperature can bereduced, the sintering time is shortened, the energy consumption is reduced and the production efficiency is improved; and meanwhile, sintered material particles are dispersed uniformly, agglomeration is less, and post-treatment processing is relatively easy. The high-nickel ternary single crystal material prepared by the method has the characteristics of full primary particle form, uniform dispersion, complete crystal form, stable structure, excellent electrochemical performance and the like.

The invention relates to a therapeutic apparatus for auxiliary treatment of anaerobic vaginitis, which comprises a shell, a power supply and a hot air generating device. The therapeutic apparatus is characterized in that the main body of the shell is in a hollow cylindrical shape; the head of the shell is in a hollow conical shape; the shell is provided with an air inlet and an air outlet; the air outlet is arranged at the tip of the head of the shell; the hot air generating device is arranged in the shell and comprises a heater, a motor and a fan; the fan is fixedly connected to a rotating shaft of the motor and positioned between the air inlet and the air outlet; and the heater is positioned between the fan and the air outlet. The therapeutic apparatus treats vaginal inflammation and has the characteristics of quick response, no pain, stable curative effect, economy, no toxic or side effects and the like.

A highly safe oxygen infusion for effectively increasing an oxygen partial pressure in a hypoxic region of tumor tissues, which comprises a dispersion of an albumin clathrate compound enclosing a porphyrin metal complex, dispersed in a physiologically permissible aqueous media.

The invention discloses a wet-oxygen oxidation method of a GaAs-based light emitting diode. The wet-oxygen oxidation method comprises the following steps: (1) manufacturing a layer of SiO2 film as a protecting layer on the surface of a GaAs-based epitaxial wafer; (2) performing semi-cutting operation on the GaAs-based epitaxial wafer; (3) introducing nitrogen into an annealing furnace after passing through a bubble generator, horizontally placing the GaAs-based epitaxial wafer facing the direction of the nitrogen flow in the annealing furnace, wherein the liquid in the bubble generator is deionized water containing H2O2, the mass percentage of H2O2 is 0.5-2%, the temperature of the annealing furnace is set to be 350-400 DEG C, and the oxidation time is 20-30 minutes; (4) corroding SiO2 on the surface of the GaAs-based epitaxial wafer by using hydrofluoric acid, so as to complete wet-oxygen oxidation. According to the wet-oxygen oxidation method, hydrogen peroxide is additionally used in the conventional wet-oxygen oxidation process, so that the oxidation property of the aluminum component can be improved; meanwhile when being in contact with the wafer, hydrogen peroxide can be explosively decomposed into water and oxygen, so that oxygen partial pressure on the surface of the wafer is improved, and the aluminum component can be sufficiently oxidized into A12O3 with a low refractive index.

The invention belongs to the technical field of cultivation and particularly relates to a fry breeding method of sea eels. By the aid of the method, fry breeding of the sea eels is carried out, and oxygen partial pressure in a water body is improved to provide sufficient oxygen to sea eel fries; a micro-ecological preparation is added and foam of the water body is separated, so that the content of ammonia nitrogen, nitrite and organic matters in the water body is reduced; the water quality is controlled and a safe water body environment is provided for the fries; antibiotics are added periodically so that the occurrence rate of plant diseases and insect pests is obviously reduced and the survival rate of the fries is improved and is up to be more than 60%; the fry breeding method has a wide application prospect.