34results about How to "Reduced preparation process" patented technology

The invention relates to a preparing method of a metal carrier catalyst coating, wherein, the metal carrier catalyst coating which has an alloy metal high temperature treated as a substrate firstly loads a first layer alumina sol AlOOH, after drying loads a second layer Al2O3 paste, then drying and calcining to obtain a firmly coating; or loads mixed paste comprised by Al2O3 and the other metal oxide required by reaction on the dried AlOOH coat to obtain a catalyst active coat after drying and calcining; or an active coating for especial reaction is obtained by further loading paste which is the other metal oxide required by reaction on the second Al2O3 paste coat, and then drying and calcining. Then the active components are loaded on the obtained catalyst coating, after drying and calcining to prepare the metal carrier catalyst. The coating and the metal carrier of the invention are combined firmly. The invention can prepare the composite coating metal carrier catalyst based on different reaction requirement and the process and device for preparing is simple.

The invention relates to an interference type optical fiber gyro based on principle of MZ interference, wherein the gyroscopic instrument comprises an illuminating source, a beam divider, an optical supervisory instrument, and an optical fiber sensor coil composed of two optical fiber arms of MZ interference, wherein the light from the light source is connected to the starting terminal and ending terminal of the two optical fiber arms on the optical fiber coils after the beam divider. The forward conduction optical path is separate from the intervened optical path, thus no interference is resulted.

The invention discloses a masking plate and array substrate manufacturing method and aims to simplify the manufacturing process of an organic light-emitting diode display panel, save manufacturing cost and improve the product yield. The masking plate comprises a masking plate body and a supporting structure, wherein the masking plate body has a first side surface facing a substrate in the vapor plating process and a second side surface at the back of the substrate, the supporting structure comprises multiple supporting projections arranged at the first side surface of the masking plate body, and surfaces of the supporting projections are smooth transition surfaces.

The invention relates to an internal combustion steam engine that is based on the internal combustion thermodynamic generator. The variable radiators are taken out from the traditional engine, while the warm keep cover, and heat absorbing water spray system formed by water tank, low pressure water pump, water cooling heat exchanger, high pressure pump, high water sprayer, are installed on the outside of traditional engine and connected through the water delivery pipe according to the above order, thereof, the high pressure water sprayer if installed on the high temperature part of the firebox; besides, by reforming the fuel atomization and spraying device onto the air-changing channel to make engine save energy and the more environment-protective.

The invention discloses a body insulation structure of a dry-type transformer with a three-dimensional rolled iron core. An insulating cylinder is fixed on low-voltage coils or high-voltage coils and is formed by winding insulating thin plates and preimpregnatde insulating material; the insulating cylinder is supported and fixed by more than three stays; and the coils are tightly pressed by more than three packing blocks, evenly distributed on the circumferences of the upper end surface and the lower end surface of each pair of the coils and fixed by compression screws fixed on a clamping piece of the transformer in a pressing manner. The invention solves the technical problem that the complete closed insulating cylinder cannot be sleeved between the high-voltage coils since the iron core is sealed, reduces the thickness of the insulating cylinder by 70 percent and the cost of the insulating cylinder by 70 percent, not only simplifies the manufacturing process of the insulating cylinder, but also enhances the insulating property, shortens the production cycle, reduces the manufacturing cost, has attractive appearance and changes the distribution of soft/hard lumps on the circumferences at the upper ends and the lower ends of the coils so that the coil stress is uniform and the product stability and the property against impulsive short circuiting are enhanced.

The invention relates to a method for preparing mixed-crystal double-effect seed crystal for production of titanium dioxide by a sulfuric acid method. The method comprises the steps of alkali dissolution, washing, acid dissolution, cooling and the like, wherein alkali dissolution is carried out in an alkali-titanium ratio of 3:1-5:1; in the acid dissolution reaction, 0.5-1.0 time of hydrochloric acid is added to dissolve for 10-60 minutes at 85-95 DEG C, and extremely freezing is carried out until the temperature is below 50 DEG C to obtain the nano-grade mixed-crystal double-effect seed crystal. According to the method, the seed crystal is added during hydrolyzing, no calcining seed crystal is required during calcining, the process for preparing a calcining seed crystal is eliminated, preparation of hydrolyzing and calcining seed crystal can be completed in one time, complicated process of respectively preparing hydrolyzing seed crystal and calcining seed crystal can be avoided, cost can be saved and product quality can be improved.

The invention relates to the field of extraction of natural compounds, in particular to a method for separating flavonoid components in annona squamosa leaves. An ethanol extract of the annona squamosa leaves is subjected to dealcoholization, petroleum ether degreasing and n-butyl alcohol extraction to obtain a crude flavonoid extract, and the crude flavonoid extract is distributed by a two-phasesolvent to obtain a total flavonoid sample. By means of high-speed countercurrent chromatography, a secondary flavonoid extract is separated and purified to obtain quercetin-3-O-beta-D-glucoside, kaempferol-3-O-robinobioside, kaempferol-3-O-rutinoside, quercetin-3-O-robinobioside and rutin, and the purity is 95% or above. The invention further provides a method for separating the flavonoid components through linear elution. High-purity monomer can be obtained, and the method has good popularization significance.

The invention discloses a method for preparing spherical Ni(OH)2 nano powder, which is characterized by comprising the following steps: (1) uniformly mixing naphthenic acid or bis(2-ethylhexyl)phosphoric acid and isooctyl alcohol with stirring, adding an aqueous solution of NiSO4 into the mixture, adjusting the pH value, transferring the mixed solution into a dispensing device, standing the mixed solution, separating an organic phrase, washing the organic phrase with distilled water and obtaining a nickel loaded organic phrase; (2) adjusting the pH value of the water to 5 to 8 and obtaining a water phrase; (3) introducing the water phrase and the nickel loaded organic phrase into a high-pressure kettle, sealing the kettle and starting stirring and stopping heating and stirring after the reaction goes on for 10 to 300 minutes at 110 to 300 DEGC and 0.05 to 5.8MPa; and (4) naturally cooling the mixed solution to room temperature, separating solid from liquid, washing the solid with absolute ethanol, drying the solid and obtaining the spherical Ni(OH)2 nano powder. The product of the invention is uniform in granularity and regular in shape. The process is simple and low in energy consumption. The product is high in purity. And the extractant can be recycled.

The invention discloses a method for preparing photoelectrolytic nonwoven cloth through electrostatic spinning. The method comprises the following steps: dissolving phenylamine, nano titanium diode and a fiber material into a solvent so as to obtain a mixed solution; preparing nonwoven cloth from the mixed solution by using an electrostatic spinning method; soaking the nonwoven cloth into an acidsolution for 24 hours, washing with water, and drying, so as to obtain the photoelectrolytic nonwoven cloth. The photoelectrolytic nonwoven cloth prepared by using the electrostatic spinning method has good flexibility, can be used as gauze masks, wiping cloth, filter elements and the like, and has photoelectrolytic pollutant degradation capability.

The invention discloses a method for preparing a coal gangue magnetic adsorbent by a two-step method, which belongs to the field of resource circulation and environmental protection, and is characterized by comprising the following steps: crushing and screening dry coal gangue to 200-325 meshes, mixing with soluble ferric iron salt according to a mass ratio of 20: 1-4: 1, adding water, stirring, drying, and calcining and activating for 2-4 hours at 400-600 DEG C in an air atmosphere; mixing the cooled fired product with a soluble ferrous salt, wherein the molar ratio of the ferrous salt to theferric salt in the previous step is 1: 1; and drying the mixture, and calcining the dried mixture in a closed resistance furnace at 400-550 DEG C for 1-2 hours; carrying out grinding, screening, magnetic separation and other steps on the obtained fired product to obtain the magnetic adsorbent. The trivalent and divalent iron salts are respectively used as a catalyst and a magnetizer, and the coalgangue adsorbent with strong magnetism is prepared by two-step calcination, so that the environmental problem caused by repeated addition and use of various catalysts, magnetizers and additives is avoided. The prepared magnetic adsorbent not only has high adsorption efficiency on pollutants such as dyes and phosphorus, but also has good magnetic separation performance and good regeneration effect.

The invention discloses a method for preparing a magnetic adsorbent from coal gangue, belongs to the field of resource circulation and environmental protection. The method is characterized in that coal gangue with 5-20% of dry basis volatile components is crushed and screened to 160-300 meshes; inorganic iron salt is used as a catalyst and a magnetizer, and is uniformly mixed with the coal gangueaccording to a mass ratio of 10: 1 to 2: 1; after the mixture is dried, the mixture is directly heated and activated for 2-4 hours at 400-650 DEG C in an air atmosphere; the obtained fired product isground and screened to obtain -325-mesh (the particle size is 45 microns) particles, and strong magnetic particles are extracted by utilizing a magnetic separation technology; and the strong magneticparticles are washed with deionized water until the strong magnetic particles are neutral, and the strong magnetic particles are fully dried at 100-120 DEG C to obtain the magnetic adsorbent. The magnetic active adsorbent is directly prepared by catalyzing and loading an iron-containing compound, so that the environmental problem caused by repeated addition and use of various catalysts, magnetizers and additives is avoided. The prepared magnetic adsorbent not only has high adsorption efficiency on pollutants such as dyes and phosphorus, but also has good magnetic separation performance and good regeneration effect.

The invention provides recombinant soluble human-derived bone targeted interferon gamma-1b and a preparation method thereof. The amino acid sequence of the recombinant soluble human-derived targeted interferon gamma-1b comprises recombinant interferon gamma-1 or an active fragment thereof and a bone targeted molecule; and the bone targeted molecule is a polypeptide aptamer screened out of osteoidstem cells. The bone targeted molecule and the interferon gamma-1b are fused and the interferon gamma-1b is enriched in a bone tissue by utilizing the bone targeted characteristic of the bone targetedmolecule, so that the specificity of treating bone tissue disease by the interferon gamma-1b is improved, the dosage is reduced and the toxic or side effect is reduced. Meanwhile, hydrophobic amino acid positioned at the key point in the amino acid sequence of the interferon gamma-1b is replaced by adopting site-specific mutagenesis technical principle, escherichia coli preferred codons are further adopted, soluble expression of the interferon is finally realized by optimizing the induction condition, the biological activity of the interferon gamma-1b is greatly improved, the preparation method is simple, and good application and development prospect is achieved.

The invention relates to an electric heating smoking device with a heat distribution function. The electric heating smoking device comprises a shell (1), a heat-insulation pipe (16), a Venturi pipe type heat storage pipe (13) and a nut (7). Gas inlet holes are formed in the shell (1); a third air hole (11) is formed in the heat-insulation pipe (16), the Venturi pipe type heat storage pipe (13) ispositioned in a cavity of the heat-insulation pipe (16), and the nut (7) is fixedly connected with a nut turntable (7a). The electric heating smoking device has the advantages that the electric heating smoking device is provided with the Venturi pipe type heat storage pipe, a part of hot air heated by heating coils can be gathered in a gas collecting pipe and a heat storage body, the hot air can be transmitted to a preheating pipe for preheating cigarettes in advance, accordingly, hot air distribution effects can be realized, tobacco shreds can be prevented from being burnt due to excessivelyhigh temperature of the hot air, and heat can be redistributed and utilized.

The invention provides a three-dimensional integrated structure which comprises a silicon substrate, a first nano capacitor and a second nano capacitor, the first nano capacitor and the second nano capacitor respectively adopt a first insulating substrate and a second insulating substrate, and due to the insulation property of the first insulating substrate and the second insulating substrate, the first bottom metal electrode layer can be directly arranged on the first insulating substrate, the second bottom metal electrode layer can be directly arranged on the second insulating substrate, the manufacturing process is reduced, the second insulating substrate is provided with a plurality of first containing grooves at intervals, and the bottom ends of the first containing grooves are provided with openings for exposing the first top metal electrode layer. The second bottom metal electrode layer is electrically connected with the first top metal electrode layer through the opening, so that the second bottom metal electrode layer is connected with the first top metal electrode layer while the second bottom metal electrode layer is arranged in the first accommodating groove, and the time for preparing the integrated structure is shortened. In addition, the invention also provides a manufacturing method of the three-dimensional integrated structure.

The invention relates to a preparation method of a semiconductor memory, and the semiconductor memory, and relates to the technical field of semiconductors. The method comprises the following steps: providing a semiconductor substrate, and forming transistors arranged in an array mode in the semiconductor substrate; forming a thin film stacking structure on the semiconductor substrate; forming a through hole penetrating through the thin film stacking structure, and exposing a source electrode of the transistor; epitaxially growing a storage node contact layer on the exposed surface of the source electrode of the transistor; and forming a lower electrode of a capacitor on the surface of the storage node contact layer. According to the scheme provided by the embodiment of the invention, the source electrode of the transistor is directly exposed by enabling the through hole to penetrate through the thin film stacking structure, and only one-time photomask alignment of the storage unit and the active region is needed, so that a large number of preparation processes can be saved.