34results about How to "Reduce oxygenation" patented technology

The invention discloses a method for preparing a large powder metallurgy TZM blank with uniform carbon and oxygen distribution, which comprises the following steps of: 1, weighing raw materials; 2, mixing powder, namely mixing the weighed four raw materials twice under vacuum or the protection of inert gas, mixing titanium hydride powder, zirconium hydride powder and carbon black powder to prepare mixed powder, adding a volatile organic solvent into the mixed powder, uniformly stirring to prepare suspension, adding the weighed molybdenum powder into the suspension for uniform mixing, and adding residual molybdenum powder for uniform mixing; 3, performing cold isostatic pressing; and 4, sintering by keeping the temperature at stages, namely adopting a vacuum sintering furnace and sintering at three stages, wherein the process comprises the following steps of: raising the temperature at the first stage, raising the temperature at the second stage, and sintering at high temperature. The preparation method has the advantages of reasonable design, simple and convenient operation, and good using effect. The carbon content in the center and on the surface of the prepared larger-size TZM blank can be controlled to be approximately consistent, and the oxygen content in the center and on the surface of the TZM blank also can be reduced to a lower level.

The present invention relates to methods for treating restenosis using mesenchymal stem cells, and in particular to treating restenosis following vascular surgery (e.g., angioplasty, stent implantation, rotoblation, atheroectomy, thrombectomy, or grafting).

The invention is a method of treatment of the symptoms related to inflammation that accompanies the release of Tumor Necrosis Factor-alpha in diseases such as viral infection such as those affecting the respiratory tract by providing systemic glutathione (reduced) by oral administration of glutathione (reduced) in a liposome encapsulation or by the intravenous administration of reduced glutathione. The administration of a therapeutically effective amount of oral liposomal glutathione (reduced) results in improvement of symptoms of disease induced by the release of TNF-α in infectious disease states such as respiratory and other viruses. The product is novel in that it is stable across the temperature ranges encountered in shipping and does not need to be refrigerated for storage. Compounds enhancing the effect of the liposomal glutathione as well as intravenous glutathione are contemplated such as Selenium.

The invention discloses a treatment method for low-carbon-source domestic wastewater, wherein the domestic wastewater is treated through a dual-membrane process of anaerobic hydrolysis of a biological membrane zeolite and a fluidized ceramsite biological membrane filter, that is to say, the natural zeolite which is cultured by a biological membrane is taken as a filler to decompose organic matters hard to degrade in the wastewater into low molecular weight organic matters easy to degrade through the metabolism of anaerophyte, then the ceramsite is taken as a carrier to conduct aerobic treatment, and the biological membrane formed on the surface of the ceramsite fully degrades the organic matters in the wastewater. According to the invention, the carbon source in the wastewater is effectively utilized, so that a good nitrogen and phosphorus removal effect is achieved without adding any organic carbon source trophoplasm in the treatment of the low-carbon-source domestic wastewater.

The invention belongs to the technical field of sewage treatment and discloses a method for treating sewage with a low carbon nitrogen ratio. The method comprises the following steps of (1) preparation of a solid carbon source filler bio-membrane reactor, specifically, the bio-membrane reactor is filled with a solid carbon source material, inoculated active sludge and sewage are poured into the bio-membrane reactor, the bio-membrane reactor is emptied after a period of time of standing, sewage is injected from the bottom of the bio-membrane reactor in an aerated state till biofilm formation succeeds; and (2) synchronous nitrification and denitrification of the sewage, specifically, the sewage is injected continuously from the bottom of the solid carbon source filler bio-membrane reactor inthe aerated state, the sewage is subjected to synchronous nitrification and denitrification when flowing through the solid carbon source material, and then water is discharged from the upper part ofthe solid carbon source filler bio-membrane reactor. The method effectively reduces the concentration of organic matter, reduces the aeration amount required for the aerobic reaction, and improves thesewage treatment efficiency. According to the method, the cost is low, the energy consumption of projects is reduced, the occupied space is small, and the characteristics of being flexible, economical, environmentally friendly and the like are achieved.

The invention belongs to the field of sintered rare earth permanent magnet material manufacturing, and particularly relates to a manufacturing method of sintered neodymium iron boron. The preparationmethod comprises the following steps: obtaining neodymium-iron-boron alloy powder by using a conventional process; dissolving an organic matter coating agent into an organic solvent to prepare an organic matter coating solution; mixing the organic matter coating solution with neodymium-iron-boron alloy powder, and uniformly mixing, so that the surface of the powder is coated with a compact organicmatter coating film so as to achieve the effects of oxidation resistance, lubrication and bonding; and putting the powder into a mold, and carrying out magnetic field molding to directly press a high-density, high-strength and low-oxygenation green body without isostatic pressing, so that the sintered product has high dimensional precision, and the method is a near-net molding method.

A composition for treating hearing loss includes components that function through different biological mechanisms to provide an additive effect that is equal to or greater than a sum of the effect of the individual components. The composition includes a biologically effective amount of at least one scavenger of singlet oxygen, a donor antioxidant, a third antioxidant, and a vasodilator. A method of treating hearing loss includes the step of internally administering the composition including a biologically effective amount of the at least one scavenger of singlet oxygen, the donor antioxidant, the third antioxidant, and the vasodilator to a mammal within three days of trauma to a middle or inner ear of the mammal.

The invention discloses a screening method of 3D printing powder, and the method comprises the steps of screening powder prepared by gas atomization by using an air classifier, and removing ultrafinepowder with the granularity of -15 [mu]m to obtain powder with the granularity of 15-250 [mu]m; carrying out ultrasonic screening on the powder with the granularity of 15-250 [mu]m by using a glove box to obtain printing powder with the granularity of 15-45 [mu]m; and packaging the printing powder with the granularity of 15-45 [mu]m. According to the invention, ultrafine powder and large-particle-size powder in the powder are removed in sequence by continuously screening the powder prepared by gas atomization; and the quantity of the ultrafine powder is effectively reduced by controlling the rotating speed and the air input of the wind wheel of the air classifier, the ultrasonic frequency and the screening time of an ultrasonic vibration screening machine, the humidity and the oxygen increasing amount of the printed powder are effectively reduced by controlling the parameters such as the water content and the oxygen content of the glove box, and the gas-filled packaging prevents the vacuum packaging from causing powder agglomeration and adhesion to influence the flowability of the powder..

Glycerol or other reduced carbon sources may be used as a feedstock for the microbial production of chemical products under certain microaerobic conditions. For example, such production may occur under microaerobic or microrespiratory conditions in which electron acceptors are consumed in the reaction as quickly as they are added. In such reactions, the reaction product is at least as reduced as carbon source. Further, during such a reaction, at least some of the carbon source is used to generate cell mass. In addition, microorganisms with modified genomes are provided for carrying out the methods herein.

The invention provides a multi-sectional hydrogenation dehydrogenation furnace which comprises a heating furnace, a reactor, a gas storage tank, a cooling device and a movable support, wherein the heating furnace and the reactor are horizontally placed. The reactor is a cylinder with two closed ends and formed by sequentially jointing a heating part section, a middle part section and a cooling part section, a material feeding and discharging port is formed in the end of the cooling part section and provided with a sealing cover, and a gas inflow and outflow port is formed in the sealing cover or the cylinder. The cooling device is provided with a first thermoelectric couple. The heating furnace is provided with a second thermoelectric couple. The gas storage tank is provided with a pressure gauge, a reactor joint, a vacuumizing joint and a hydrogen source joint. The reactor is installed on the movable support. The heating part section of the reactor is located in a hearth of the heating furnace. The cooling device is installed on the cooling part section of the reactor. The reactor joint on the gas storage tank is communicated with the gas inflow and outflow port of the reactor through a pipe. The invention further provides a manufacturing method of low-oxygen-content titanium powder. The oxygen content of the titanium powder manufactured through the method does not exceed 0.1wt%.

A method for treating noise-induced hearing loss (NIHL) includes the step administering a composition to the mammal, wherein the composition consists essentially of a biologically effective amount of vitamin A, vitamin E, vitamin C, a vasodilator comprising magnesium, and, optionally, a withanolide, and/or resveratrol.

Apparatus and methods are provided for treating patients exhibiting symptoms of hypertension, isolated systolic hypertension, heart failure with preserved ejection fraction, May-Thuner Syndrome or dyspnea by diagnosing and reducing narrowing of a patient's iliac vein caused by extrinsic localized compression using a stent having circumferential differential radial stiffness and delivery catheter for aligning and deploying such stents.

The invention discloses a preparation method of high-performance modified starch. The method comprises the following steps: putting dry starch into a sealed packet, firstly performing positive surfaceirradiation treatment with low dosage rate on the sealed packet, oxygenating the interior of the sealed packet, shaping the oxygenated sealed packet, and finally performing negative surface irradiation treatment with high dosage rate on the sealed packet, so as to obtain the high-performance modified starch. The method has the advantages that comprehensive irradiation technologies, such as oxygenation, alternative irradiation with different dosage rates, packaging and shaping and overturning, are adopted, so that the irradiation dosage unevenness is smaller than 1.1, the viscosity volatilityof the starch subjected to irradiation modification is smaller than 10 percent, the irradiation efficiency is high, and the cost is reduced.

Patients undergoing general anesthetics frequently experience emergence clenching where the patient may bite onto their breathing tube and may clench their teeth. These activities lead to dental damage and negative pressure pulmonary edema. The invention of this patent is a simpler, better bite block that may be used to prevent these injuries. The bite block presented comprises a deformable material used as a core around which a bite-resistant material is wrapped to prevent damage to the core by patient biting. The bite-resistant material may be formed into a distal tail that the user can pull to retain or retrieve the device. It may also have a patch of adhesive to attach the bite block to locations including the patient, the surgical drapes and the patient's breathing airway, and thereby prevent loss of the bite block.

A composition for treating permanent and temporary hearing loss includes components that function through different biological mechanisms to provide an additive effect that is equal to or greater than a sum of the effect of the individual components. The composition includes a biologically effective amount of at least one scavenger of singlet oxygen, a donor antioxidant, a third antioxidant, and a vasodilator. A method of treating hearing loss includes the step of internally administering the composition including a biologically effective amount of the at least one scavenger of singlet oxygen, the donor antioxidant, the third antioxidant, and the vasodilator to a mammal within three days of trauma to a middle or inner ear of the mammal.

The invention discloses a low-alkalinity low-carbon tundish covering agent for wear-resistant steel and an application thereof. The covering agent is prepared from the following components in percentage by mass: 15%-20% of CaO, 30%-40% of SiO2, 10%-20% of Al2O3, 1%-6% of MgO, 5%-10% of Na2O, 1%-10% of K2O, 1%-5% of B2O3, and 0.5%-2% of C; and the sum of the components is 100%. The covering agent has relatively low melting point and low viscosity, the spreadability is good in the casting process, air can be well isolated, and secondary oxidation is prevented. Meanwhile, the heat preservation performance is good, and the temperature drop of molten steel is low.