248results about How to "Meet the indicator requirements" patented technology

The invention discloses a method for producing lube base oil, which is characterized in that low-pressure hydroisomerization and adsorption treatment are adopted and organically combined, and the lube base oil meeting the standard of HVIW is obtained; the raw material firstly enters a low-pressure hydroisomerizing reactor, and the pour point is lowered; after gas-liquid separation of the heterogeneous product, adsorption treatment is done to the separated lube fraction for color enhancement and stability improvement. The invention has the advantages that adaptability of the raw oil is strong; operating condition is mild; investment and operating cost is low; and the prepared lube base oil meeting the standard of HVIW can be applied to blinding with various brands of high-grade lube.

The invention provides a liquid milk tea and a preparation method thereof. 100 percent of the weight of the liquid milk tea is used as benchmark; the liquid milk tea comprises the following compositions in weight percentage: 10 to 50 percent of milk, 25 to 30 percent of tea soup, 0.1 to 1 percent of a stabilizer, 0.01 to 8 percent of a sweetening agent, 0.01 to 0.2 percent of buffer salt and 0.01 to 0.1 percent of an antioxidant, wherein 25 to 30 percent of the tea soup is a tea extracting solution which is obtained through leaching 0.5 to 1.5 percent of dried tea leaves in hot water. The liquid milk tea has the characteristics that the liquid milk tea contains the health-care compositions of the tea, remains the natural nutritious compositions of the milk, is a liquid beverage with smooth mouthfeel and fragrant and rich scent, minimizes the composition loss of a dairy product and a tea beverage and keeps the natural color of freshness, fragrance and richness.

The invention provides a non-alkali composite flooding compound, comprising the following components in percentage by weight: 0.005-0.30% of straight-chain fatty alcohol ether carboxylic betaine amphoteric surfactant, 0.05-0.25% of polymer, and the balance of oilfield injected clear water or return water. According to the invention, the straight-chain fatty alcohol ether carboxylic betaine amphoteric surfactant is used as the essential component of the non-alkali composite flooding compound, to form surfactant/polymer binary system which can reach ultra interfacial tension range with middle-low-temperature middle-low-salt oil deposit and high-temperature high-salt oil deposit, in this way, the requirements on non-alkali composite oil flooding are satisfied.

The invention discloses a serum-free culture medium for human umbilical cord MSCs (mesenchymal stem cells). The serum-free culture medium comprises the major ingredients of amino acid, inorganic salt ingredients, growth factors and albumin ingredients. The serum-free culture medium for human umbilical cord MSCs does not contain any serum ingredients; in addition, the ingredients are clear; the foreign protein pollution and pathogenic microorganism risks are avoided; the biosecurity problem of the MSCs clinic application is solved. When the serum-free culture medium provided by the invention is used for culturing the human umbilical cord MSCs, the high-quantity high-purity safe and high-quality umbilical cord MSCs can be obtained in vitro; meanwhile, the cell survival rate can be improved; the stem cell characteristics are maintained. The problem of insufficient cell quantity can be solved; the cell number, the survival rate and the immunophenotyping in each batch are more stable; the relevant index requirements are met.

The invention discloses steel used for nuclear power pressure-bearing equipment and a manufacturing method thereof. The steel comprises the following chemical components by weight: 0.12%-0.18% of C; 0.15%-0.35% of Si; 1.20%-1.65% of Mn; less than or equal to 0.015% of P; less than or equal to 0.010% of S, 0.50%-0.85% of Ni; less than or equal to 0.15% of Cr; 0.020%-0.050% of Al; less than or equal to 0.02% of V; less than or equal to 0.02% of Ti, and the balance Fe and unavoidable impurities. At the same time, non-metallic inclusions in the steel are controlled, and A, B, C and D impurities are guaranteed less than or equal to grade 1.5. The manufacturing method mainly includes steel smelting, rolling, as well as quenching and tempering treatment. Through further optimization of the chemical components, a heat treatment process, and reduction of gas and non-metallic inclusions in steel, the method enables the mechanical properties of a steel plate to be maintained at a high level under a heat treatment state, a simulated post-weld heat treatment state, and a 200DEG C high temperature state, so that the steel plate completely meets the technical index requirements. Meanwhile, the 0DEG C impact absorption energy is still maintained at a high level, and good matching of steel plate strength and toughness is reflected, so that the steel provided in the invention is completely suitable for nuclear power pressure-bearing equipment.

The invention discloses a high-altitude high-speed unmanned aerial vehicle landing and grounding state control method. The invention aims to provide a safer and more reliable control method. The control method of the invention is realized by following technical schemes: a high-altitude high-speed autonomous take-off and landing type unmanned aerial vehicle landing control system acquires the information of a differential GPS, and the altitude values and validity signals of an inertial navigation GPS, an atmospheric engine A, an atmospheric engine B, a radio altimeter A and a radio altimeter through a flight control computer, judges whether a certain device malfunctions, sets altitude information and valid bit information if the device malfunctions; whether one altitude source is valid is judged according to the altitude values and validity signals of the difference GPS and the inertial GPS, and if the altitude source is valid, whether the altitude source is within an altitude thresholdis judged, if the altitude source is within the altitude threshold, left main landing wheel load sensor and right main landing wheel load sensor signals are collected for 5 consecutive beats; and whether wheel load is real for 5 consecutive beats is judged, and if the wheel load is real for 5 consecutive beats, a landing and grounding state flag is set, and ground measurement and control system station commands are collected, and landing and grounding state operation is performed.

The invention discloses a system and method for carrying out phase calibration. The system is composed of a direction-finding antenna array, a calibration device, a rotary table, and a direction-finding receiver. The calibration device consists of an input terminal and an output terminal; and the input terminal is connected with the direction-finding antenna array. The rotary table includes a first end and a second end; and the first end is connected with the output terminal. The direction-finding receiver includes a direction-finding receiver internal channel and a direction-finding receiver processor; and the direction-finding receiver processor is connected with the second end. The calibration device is controlled by the direction-finding receiver to transmit a radio-frequency calibration signal; the signal passes through the rotary table and the direction-finding receiver internal channel and then is sent to the direction-finding receiver processor; the direction-finding receiver processor carries out phase measurement on the radio-frequency calibration signal; phase adaption errors between receiving channels except the direction-finding antenna array among the receiving channels in the system are obtained, so that phase calibration of the receiving channels except the direction-finding antenna array can be completed based on the phase adaption errors.

A nutritive millet powder for taking care of health and preventing diseases is prepared from millet powder, corn starch, soft white sugar and milk powder through removing impurities, peeling, pulverizing, mixing, extruding while puffing, baking and packing.

The invention discloses a carrier aggregation method and a terminal. The carrier aggregation method comprises the steps of: aggregating low-frequency carriers and intermediate-frequency carriers into low-intermediate-frequency carriers by means of a diplexer; when the terminal is in a single carrier working mode, opening a port of the low-intermediate-frequency carriers or a port of high-frequency carriers by means of a switch to control the low-intermediate-frequency carriers or the high-frequency carriers to operate; and when the terminal is in a multiple-carrier operating mode, synchronously opening the port of low-intermediate-frequency carriers and the port of high-frequency carriers by means of the switch to control the low-intermediate-frequency carriers and the high-frequency carriers to operate synchronously.

The invention relates to a method for recycling a waste silicon solution, in particular to a method for recycling a waste silicon solution generated in cutting silicon chip sheets. The method is characterized by comprising the following steps: carrying out centrifugal separation on the waste silicon solution generated in cutting silicon bars by filter cloth with the pore diameter of 800-1,500 meshes, and then obtaining silicon powder; putting the silicon powder obtained after separation in a reaction kettle; adding a strong oxidizer to react, and then filtering the reaction solution so as to remove organic carbon impurities, wherein the strong oxidizer is one of concentrated sulfuric acid, hydrogen peroxide and nitric acid or a mixed solution prepared from concentrated sulfuric acid, hydrogen peroxide and nitric acid; putting the silicon powder obtained after secondary filtration in the reaction kettle; adding diluted aqua fortis to react, and then filtering and drying the reaction solution so as to remove metal and metal oxide impurities; and putting the silicon powder obtained after third filtration in a Czochralski single crystal furnace; sufficiently reacting in the single crystal furnace in vacuum at the temperature of 800-1,000 DEG C so as to remove surface impurities, then cooling, and finally obtaining solar-grade silicon sheets. Applying the method can recycle most silicon powder in the waste silicon solution, and the silicon powder can be used for manufacturing solar batteries by downstream processing, thereby not only saving resources, but also not generating environmental pollution.

The invention provides a method for preparing cobaltosic oxide with large grain size and high safety, comprising the following steps: preparing the raw material cobalt and a precipitant into cobalt solution and precipitant solution with deionized water, adding the cobalt solution and the precipitant solution which are prepared to certain concentration to a reaction vessel by the charging methods including cocurrent charging according to certain molar ratio, preparing the cobalt salt precursor by controlling the reaction temperature, charging speed, PH value and stirring speed, washing and dehydrating the precursor, directly putting the water-containing filter cake into a pot, spheroidizing and calcining the pot at high temperature, carrying out mechanical grinding, grading and activating, controlling the grain size and the crystal morphology and finally removing the magnetic metal foreign bodies, thus finally obtaining the high quality battery grade cobaltosic oxide. The method is simple in process, easy to operate, low in cost, energy-saving, environment-friendly and suitable for industrial production. The prepared cobaltosic oxide looks like spheroid and has large grain size, good powder flowability and uniform granularity.

The invention provides a multicarrier filtration method, a multicarrier filtration system and a repeater, which are suitable for the field of communications. The multicarrier filtration method comprises the following steps of: using a plurality of continuous carrier waves as a subband by a control module to obtain carrier frequency, carrier quantity and subband quantity; determining the center frequency of the subband according to the carrier frequency and the carrier quantity; distributing corresponding subband passband width and subband stop-band width to the subband according to the passband width and the stop-band width of the carrier waves in the subband and the carrier quantity; determining channel bandwidth of the subband; moving the center frequency of the subband to zero frequency by a lower frequency conversion module; carrying out corresponding multiple filtration extraction on the subband by a filtration extraction module; and carrying out channel filtration by a channel filtration module according to the corresponding subband passband width and the corresponding subband stop-band width distributed by the control module and the determined channel bandwidth of the subband. The multicarrier filtration method, the multicarrier filtration system and the repeater can save resources, reduce filtration step number, shorten time delay and satisfy higher index requirements.

The invention provides a preparation method of ternary precursor material, comprising the following steps a: S1, weighing a nickel source, a cobalt source and a manganese source according to a predetermined ratio and dissolving in deionized water to form a first mixed solution; S2, adding the first mixed solution, a first strong alkali solution and a complexing agent to a first reactor; S3, addingseed crystal obtained by the reaction in S2 to a second reactor, and then adding a second complexing agent, a second mixing solution and a second alkali liquid solution to the second reactor for fullreaction; S4, transferring a reaction product obtained by the sufficient reaction in S3 is transferred to the aging tank to continue the reaction, transferring a precipitate into a filter press for solid-liquid separation, and washing the precipitate with the deionized water; S5, drying the precipitate obtained in S4 in an oxygen-rich atmosphere to obtain a ternary precursor material. At the sametime, the invention also provides the ternary precursor material.

The invention discloses a refractive index sensor based on a metal nanostructure and single-layer TMDs composite system and a method. According to the invention, a composite structure formed by clinging a metal nanostructure and a single-layer transition metal sulfide is adopted, and a local surface plasmon polariton refractive index sensor which can be almost independently controlled is realizedin a visible light waveband; local surface plasmon of a metal nanostructure and excitons of a TMDs two-dimensional material are fused, and the advantages of the local surface plasmon and the excitonsare combined, so that the extremely good sensing performance is achieved, and the index requirements of a novel sensor can be met; the scattering spectrum is enhanced, so that the effect of enhancingthe signal-to-noise ratio is achieved; and when the external environment changes, the spectral line width is narrowed relative to a single metal nanostructure, and rich structural information is extracted, so that high-sensitivity sensing is realized; the size of the device can be reduced, and the sensor has potential application in a highly integrated local surface plasmon sensor. The refractiveindex sensor has the advantages of simple structure, small volume, high signal-to-noise ratio, high sensitivity and quick response.

A slurry used for clay layer of horizontal positioned drilling is prepared from alta-mud, soda ash, hydrolytic polyacrylonitrile, lubricant and water. the prepared slurry can prevent drilled hole from collapse and driller from seizing-up in course of horizontally positioned drilling.

The invention discloses a special primer-topcoat polyurea protection coating for an automobile chassis system and a preparation method. The coating is prepared from a component A and a component B in a volume ratio of 1:(2-4), wherein the component A comprises isocyanate, a poly-sulfide modified epoxy resin and a diluent; the component B comprises an aliphatic synthetic hindered amine polyurea resin, a coloring pigment, a filler, graphene pulp, organic zinc, a dispersing agent, an ultraviolet absorbent, an ultraviolet light stabilizer, an anti-settling agent, a leveling agent, a defoaming agent, extinction powder and a dissolvent. The invention further discloses a preparation method of the special primer-topcoat polyurea protection coating for the automobile chassis system. The thickness of a disposable coating membrane is greater than or equal to 80mu m, a coating membrane is rapid in drying speed and high in construction efficiency, a coated layer is good in adhesion to a substrate, good in impact resistance, free of color change in long-term outdoor exposure, very good in aging resistance, salt mist resistance and medium resistance, high in product solid content and good in environmental friendliness, and the method provided by the invention is simple in process, low in cost and applicable to industrial production.

The invention discloses an environmental-friendly hydraulic oil composition and a production method thereof. The environmental-friendly hydraulic oil composition comprises the following raw material components per kilogram: 982 to 986.6 grams of base oil, 11 to 12 grams of antioxidant, 1.0 to 3.0 grams of extrcme pressure antiwear additive, 0.4 to 0.5 gram of metal deactivator and 1.2 to 2.0 gg of antirusting agent. The production method of the environmental-friendly hydraulic oil composition comprises the following steps of: after mixing component oils in the base oil according to a certain ratio, heating to a temperature of 75 to 85 DEG C and stirring for 4 hours; then adding other various additives together; and stirring for 4 hours at a temperature of 50 to 60 DEG C to obtain the the environmental-friendly hydraulic oil composition disclosed by the invention. The environmental-friendly hydraulic oil composition disclosed by the invention has low cost and has performances of excellent abrasion resistance, oxidation resistance, hydrolytic stability, anti-rusting property, biodegradability and the like.

The invention discloses a uniaxial modulation laser gyroscope inertial navigation system multi-coordinate system calibration method. The method comprises powering on a system so that the system is a preparation stage, determining an IMU installation base level attitude, recording navigation original data, reading the original data and carrying out attitude conversion Euler angle calculation by calibration software, carrying out marble calibration, carrying out azimuth mirror calibration preparation, determining an inertial navigation base plane and an azimuth mirror normal direction, recording navigation original data, reading the original data and carrying out attitude conversion Euler angle calculation by the calibration software, and carrying out azimuth mirror calibration. Through marble calibration, the problem that the traditional method needs a complex calibration process for guaranteeing an attitude precision after IMU replacement is solved. Through azimuth mirror calibration, the unification of an inertial navigation system coordinate system, a base plane and an azimuth mirror coordinate system is realized and follow-up production is convenient.

The invention provides a preparation method of manganous-manganic oxide and the manganous-manganic oxide. The preparation method comprises the following steps of adjusting the pH value of manganese dioxide powder slurry to be 2.0-2.5, stirring the slurry at the temperature of 60-70 DEG C and conducting solid-liquid separation; adding manganese dioxide after scouring in manganese sulfate solution with the concentration of 100-200g/L; warming the solution at nitrogen atmosphere to the temperature in the scope of 55-60DEG C; leading in NH3 holding solution with the pH value in the scope of 7.5-8.0, and maintaining, stirring and reacting for 0.8-1.2 hours after the pH value of the holding solution is stable; replacing nitrogen atmosphere by using oxygen atmosphere, leading in NH3 holding solution with the pH value in the scope of 7.0-7.5, adding 250-350g/L of MnSO4 solution, reacting until concentration of Mn+ is smaller than 500ppm, stopping the reaction, conducting solid-liquid separation, washing solid phase, and drying to obtain globular Mn3O4 products. The preparation method can use electrolytic manganese dioxide (EMD) tail powder to serve as raw materials, obtained manganous-manganic oxide products are approximately spherical and high in purity, and requirements for lithium-ion secondary battery are met.

The invention discloses steel slag reconstructed at a high temperature by utilizing calcium-aluminum components as well as a preparation method and an application thereof. The preparation method comprises the following steps: drying 74%-83% of steel slag, 11%-24% of a calcium hardening and tempering material (lime) and 2%-6% of an aluminum hardening and tempering material (bauxite), crushing, grinding, mixing, preparing a sample, calcining to obtain a calcined material, and grinding the calcined material to obtain the high-gelling-property steel slag clinker. The steel slag mineral compositionis reconstructed through calcium-aluminum components, so that low-activity minerals such as steel slag Fe2O3 and RO are converted into a high-gelling-activity mineral phase with dicalcium silicate (C2S) and aluminoferrite (C4AF) as main components. The change of the mineral phase enables the hydration activity of the steel slag to be improved, and research results show that the 28-day compressivestrength of the calcium-aluminum component reconstructed steel slag obtained by using the preparation method provided by the invention reaches 42.9 MPa, and the activity index reaches 91.3%. The obtained high-activity steel slag can be directly used as a cement admixture or a high-performance concrete admixture as a finished product, the comprehensive utilization rate of the steel slag is increased, and the method has practical significance.