32results about How to "Excellent uniformity" patented technology

The invention discloses a preparation method of a Ti2AlNb alloy material. The method comprises the steps of 1, preparing a Ti2AlNb alloy ingot through vacuum self-consumption electric arc melting, kish furnace smelting and vacuum self-consumption electric arc melting; 2, conducting primary homogenization treatment on the Ti2AlNb alloy ingot; and 3, wrapping the Ti2AlNb alloy ingot with asbestos cloth, then conducting heat-preservation heat treatment, and then sequentially conducting cogging forging, improved forging and finished product forging, so that the Ti2AlNb alloy material is finally obtained. The preparation method of the Ti2AlNb alloy material is simple in preparation process and reasonable in process design; an alloy is uniform in structure and stable in performance; the alloy ingot can be effectively refined, purified and homogenized through a smelting method; through the high-quality ingot, smooth implementation of subsequent hot working is guaranteed; by means of homogenization treatment, uniformity of alloy elements can be further improved through element diffusion; and wrapping treatment is conducted with the asbestos cloth, the temperature of the material can be effectively prevented from being lowered in the whole forging process, and large-deformation-amount forging for one heating time is achieved.

The invention discloses a spinel-coated layered positive electrode material with a heterostructure and a preparation method thereof, a positive electrode of a lithium-ion battery of using the positiveelectrode material and the lithium-ion battery of using the positive electrode. According to the spinel-coated layered positive electrode material, a precursor is prepared by using an existing coprecipitation preparation technology, and the precursor is subjected to surface oxidation treatment through an extremely simple mixing method and then subjected to high-temperature heat treatment, therebyobtaining a heterogeneous positive electrode material of employing a lithium-rich layered material as a core and a spinel material as a protective shell. The modification method is easy to operate, high in security, low in cost and suitable for large-scale production; the obtained spinel coating layer is relatively high in integrity and uniformity and adjustable in thickness; the spinel-coated layered positive electrode material is much higher than a commercial positive electrode material in rate capability and cycling stability; and the demand for the lithium-ion battery with high energy density, a long cycle and high stability in the market can be met.

The invention discloses a low-temperature manufacturing method of silicon nitride film used in passivation layer of an integrated circuit. The silicon nitride film grows on a substrate positioned inside a deposition chamber. The method comprises cleaning the substrate and placing inside the working chamber, vacuumizing the working chamber and presetting working conditions, introducing a mixed gas composed of silicon source gas and nitride source gas into the working chamber, performing ionization and decomposition of the mixed gas with the action of energy absorbed from a microwave source upon electron cyclotron resonance effect, transferring active charged particles produced by the ionization and decomposition to the surface of the substrate with the action of permanent magnetic field, and depositing silicon nitride film on the substrate. The working conditions are as follows: working chamber pressure: 0.1-5Pa, microwave power: 600-2000W, deposition temperature: room temperature to 300 DEG C, total gas flow: 50-300sccm, flow ratio of silicon source gas to nitride source gas: 1:6 to 1:12, and substrate rotation speed: 60 r/min. The inventive method can rapidly and uniformly deposit the low-hydrogen silicon nitride film (6 inch thickness) at low temperature (below 300 DEG C), which is used as a material for passivation layer of integrated circuit or optical devices.

The invention provides crispy cereal biscuits.The crispy cereal biscuits are prepared from, by weight of dry powder, 70-80 parts of low-gluten wheat flour, 15-20 parts of puffed coix seed flour, 5-10 parts of whole wheat flour, 5-10 parts of puffed tartary buckwheat, 5-10 parts of bitter tartary buckwheat pieces, 0.5-2 parts of a composite bulking agent, 17 parts of egg liquid, 0.3 part of salt, 4.6 parts of whole milk powder, 22-26 parts of vegetable oil, 24-26 parts of white granulated sugar, 2-4 parts of high fructose syrup, 0.5-1 part of phospholipid and 3-4 parts of water.The invention further provides a making method of the crispy cereal biscuits.According to the prepared crispy cereal biscuits, the content of flavonoid compounds like rutin, the content of 18 kinds of amino acid needed by the human body and the content of mineral are higher than those of common crispy biscuits sold in the market, the content of slow digestible starch is no smaller than 35 g/100 g, and when being eaten frequently, the prepared crispy cereal biscuits have a nutrition function of balancing food and have nutrition effects of softening blood vessels and resisting oxidation.

The invention discloses an improved cereal short biscuit. Dry materials of the improved cereal short biscuit comprise, by weight, 70-80 parts of low-gluten wheat flour, 10-15 parts of puffed quinoa flour, 10-15 parts of whole wheat flour, 5-10 parts of puffed pearl barley, 5-10 parts of quinoa oatmeal, 0.5-2 parts of composite bulking agent, 17 parts of egg liquid, 0.3 part of salt, 4.6 parts of whole milk powder, 22-26 parts of vegetable oil, 24-26 parts of white granulated sugar, 2-4 parts of high fructose corn syrup, 0.5-1 part of phospholipid amd 3-4 parts of water. The invention further provides a preparing method of the improved cereal short biscuit. According to the cereal short biscuit prepared with the method, the contents of polyphenol, 18 kinds of amino acid required by the human body, vitamins and mineral substances are higher that the contents in a common market short biscuit; if the cereal short biscuit prepared with the method is frequently eaten, the important effects of adjusting the blood glucose level and protecting the heart are achieved, and after the improved cereal short biscuit is eaten, satiety exists and contributes to weight losing.

The invention discloses a corrosion-resistant high-strength neutron shielding alloy material which is composed of the following elements including, by mass, 49%-51% of Hf and the balance Zr and inevitable impurities. The invention also provides a preparation method of the corrosion-resistant high-strength neutron shielding alloy material. The method comprises the following steps of mixing sponge zirconium and sponge hafnium, conducting pressing and vacuum consumable electrode smelting to obtain an alloy cast ingot, sequentially machining and chamfering the alloy cast ingot, carrying out three-heating-number forging to obtain a forged alloy ingot, carrying out heat treatment on the forged alloy ingot, and cooling to obtain the alloy material. According to the corrosion-resistant high-strength neutron shielding alloy material and the preparation method, the Zr serves as a matrix, the Hf serves as a main alloy element, the alloy material is prepared through vacuum consumable electrode smelting and three-heating-number forging, and the prepared alloy material is single in phase and uniform in structure, has excellent neutron shielding performance and strength and meanwhile has extremely high corrosion resistance and machinable performance.

The invention discloses a single cell whole genome amplification method, comprising following steps: (1), performing separating to obtain single cell samples; (2), subjecting the single cell samples to whole genome DNA amplification; (3), subjecting an amplification product to quantitative and qualitative analysis; (4), establishing a genome sequencing library, performing sequencing, and performing genome bioinformatic analysis. The single cell genome DNA amplification method is built and can be used to detect the single, tertiary, multiple and sex chromosome deficiency of a whole chromosome, the insertion and deficiency of few bases, DNA copy number variation, and the genetic variation information of single cell genomes such as single nucleotide polymorphisms.

The invention discloses a mother strain culture medium formula of wood-rotting edible fungi and a preparation method of a mother strain culture medium. The formula comprises the following raw materials in parts by weight: 60-100 parts of peach twigs, 40-60 parts of wheat grains, 40-60 parts of soybean curd, 15-25 parts of multi-vitamin glucose powder, 15-25 parts of agar and 1000 parts of water. The invention further provides the preparation method of the mother strain culture medium and the preparation method comprises the following steps: selecting the raw materials, preparing, subpackaging, sealing, tying up, sterilizing and placing on a slant. After the mother strain culture medium is used for many years, regardless of purification, rejuvenation or subculture, the growth density of mycelia, uniformity and growth speed of hyphae of the wood-rotting edible fungi which are transferred to and cultured in the mother strain culture medium are better than those of edible fungi cultured in a traditional culture medium PDA (potato dextrose agar); and particularly, under the situation of using a silica gel plug, for a mother strain which is preserved at a low temperature in a refrigerator and then transferred after being preserved for 1-2 years, the survival rate can still be more than 95%, and the occurrence of phenomena of variety degeneration, variation and the like can be avoided.

The invention discloses a method of rapidly predicting smoking uniformity of a cigarette. Smoking uniformity of a cigarette is predicted according to a cigarette density distribution characteristic Y,if Y is within (1.2,3.0), the cigarette of the specification is qualified in smoking uniformity, and the smaller the Y, the better the smoking uniformity of the cigarette. The method is easy and rapid to operate, can measure online, and delivers an accurate, reliable result.

The invention discloses a preferable method for preparing a dry powder preparation and device by using levosalbutamol sulfate.

The invention provides a mixed oxide multifunctional electro-catalytic material, and belongs to the technical field of electro-catalytic materials and is composed of a metal oxide A with oxygen storage capacity and a metal oxide B with oxygen evolution reaction catalytic activity. Through cooperation of the metal oxide A with oxygen storage capacity and the metal oxide B with oxygen evolution reaction catalytic activity, the poisoning of carbon monoxide to the catalyst can be alleviated, damage of free radicals to a proton exchange membrane can be weakened, and the protection can be provided for a carbon carrier and a catalytic layer through electrolyzed water when an electric fuel cell stack is subjected to pole reversal; the stability of the catalytic material can also be improved, and a positive effect on improving the catalytic performance of the catalytic material is also achieved; the invention also provides a preparation method and application of the mixed oxide multifunctional electro-catalytic material.

The invention relates to the technical field of fluid distribution, and discloses a flow dividing element which comprises an element body. A plurality of flow dividing through holes are distributed on the element body; the porosity of the element body is 60 percent to 78 percent; and the included angle between the axis of each flow dividing through hole and the normal of the plane where the flow dividing through hole is located is 0 degree to 15 degrees. By controlling the porosity of the flow dividing through holes and setting the forming directions of the flow dividing through holes, a better flow mixing effect can be achieved on fluid, and the fluid flowing through the flow dividing through holes can be evenly and stably mixed; the fluid distributor comprising the flow dividing element is uniform in liquid distribution, so that good uniformity and stability are achieved, and the uniformity and the stability of the fluid distributor can be even superior to the uniformity and the stability of an existing venturi distributor; and furthermore, a heat exchanger adopting the fluid distributor is uniform in flow distribution, and the energy efficiency is improved. Meanwhile, the flow dividing element provided by the embodiment of the invention is simple in structure, easy to machine and form and low in machining cost. The invention further discloses the fluid distributor.

The invention discloses an atomic layer deposition technology and method used for preparing an iridium thin film. The method comprises a liquid iridium source and a hydrazine reduction agent. The liquid iridium source serves as a precursor, the hydrazine reduction agent serves as a reduction precursor, and 1-ethyl cyclopentadienyl-1, 3-cyclohexadienyl (I) and other raw materials can be adopted bythe liquid iridium source. The liquid iridium source Ir is selected as the iridium precursor, the hydrazine reduction agent is selected as the reduction precursor, the heat type atomic layer deposition technology can be directly utilized, and the simple substance iridium thin film can be deposited and is superior to plasma NH3, hydrogen and other gas used in the prior art; and in the use process,operation is more convenient, safer and easier, inconvenience of operation of plasma hydrogen, plasma ammonia gas and the like can be avoided, the preparation process of the simple substance iridium thin film can be simplified, and cost can be saved.

The invention discloses a method for processing monocalcium phosphate. The method comprises the following steps: enabling defluorinated phosphoric acid to react with calcium carbonate or calcium hydrophosphate slurry, drying through a spray drying tower to obtain a powdery MCP product, and taking a part of the powdery product and collected powder as backward materials for producing a granular MCPproduct; using defluorinated phosphoric acid to directly react with calcium carbonate or calcium hydrophosphate powder, adding the backward materials and a small amount of a granulating modifier and aferrous stabilizer, and carrying out drying and sieving after pelleting of a pelletizer so as to obtain the granular MCP product. The cooperative production of powdery and granular feed grade MCP isrealized, dust material is efficiently recycled, the intensity and uniformity of particles are improved, the pulverization of particles is avoided, and material sieving and crushing equipment blockageare effectively reduced. Moreover, the granular MCP product with the effect of supplementing phosphorus, calcium and iron is also obtained.