26results about How to "Simple process control" patented technology

The invention discloses a distributed fluorescence temperature measurement method based on 45-degree inclined gratings, and relates to the field of temperature monitoring under high-temperature conditions of engine turbine blades and the like. 45-degree inclined grating strings are designed and manufactured, the outer sides of the 45-degree inclined gratings are coated with fluorescent materials, and the fluorescent materials are made to emit light through ultraviolet pulse excitation light; the fluorescence returns to the optical fiber through the 45-degree inclined grating, the fluorescence lifetime is measured, temperature monitoring is achieved according to the relation between the fluorescence lifetime and the temperature, the detection position is calculated through the pulse light return time, and temperature distribution of different positions is obtained. According to the distributed fluorescence temperature measurement method based on the 45-degree inclined grating, the measurement precision and the signal processing capacity are improved through a time correlation single photon counting method, the grating can be inscribed on a sapphire optical fiber, and the method is suitable for temperature monitoring in the high-temperature field of engine turbine blades and the like; and meanwhile, the device has a multi-point temperature measurement effect with high precision and strong high-temperature adaptability, and is of great significance to high-temperature environment monitoring.

The invention relates to an organic pollutant wastewater treatment technology, in particular to a preparation method and application of a high-entropy ferrite Fenton-like catalyst. The nano high-entropy ferrite is prepared through one-step growth by adopting a low-temperature solvothermal method in a strong alkaline environment, the chemical composition of the nano high-entropy ferrite is (MxCoxNi0. 2Cu0. 2Zn0. 2) Fe2O4, M is Mg and / or Mn, 0 lt, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, and x is less than or equal to 0.2. According to the invention, the catalytic activity and selectivity design of the Fenton-like catalyst is realized by regulating and controlling the chemical composition of the high-entropy ferrite, and the prepared flaky or regular octahedral high-entropy ferrite has higher catalytic activity than a single phase. The synthesis method of the high-entropy ferrite catalyst provided by the invention has the advantages of low preparation temperature, high universality, simplicity and feasibility, simple equipment and the like, and provides a new way and a new idea for application of the high-entropy ferrite material in the fields of catalysis, energy conversion and the like.

The invention relates to the technical field of deep processing of natural products, in particular to water-soluble liquid curcumin as well as a preparation method and application thereof. Curcumin is used as a raw material, an antioxidant, a food surfactant and the like are matched, edible ethanol is used as a solvent, and a temperature control crystallization technology is adopted to prepare curcumin compound crystals; and with the curcumin compound crystal as a raw material and a surfactant as an auxiliary material, the water-soluble liquid curcumin which is high in content, good in stability and clear and transparent in solution is obtained by combining technologies such as temperature-controlled emulsification, heat preservation, dilution and the like. The product can meet the requirements on hue, clarity and stability of the curcumin aqueous solution in different application scenes, and is suitable for the fields of food, medicine, cosmetics and the like.

The invention discloses a preparation method of an arfamarana key intermediate, which comprises the following steps: carrying out nucleophilic addition reaction on a compound I and 1-[3-chloro-5-(trifluoromethyl) phenyl]-2, 2, 2-trifluoroethanone under the action of an organic solvent A and alkali to obtain a compound II; dissolving the compound II in an organic solvent B, adding concentrated sulfuric acid, carrying out intramolecular dehydration and cyanogen hydrolysis, and after the reaction is finished, cooling to room temperature for crystal growing to obtain a compound III; dissolving the compound III in an organic solvent C, carrying out intramolecular cyclization and ester hydrolysis reaction on the compound III and hydroxylamine hydrochloride under the action of a certain amount of sodium hydroxide aqueous solution, and after the reaction is finished, collecting a water phase and adjusting the pH value of the water phase, so as to obtain the key intermediate of arfampanaga. The reaction in each step has a high conversion rate, the purity of the prepared arfamarin intermediate is high, and powerful support and guarantee are provided for preparation of high-purity arfamarin.

The invention discloses an internal heating type rotary carbonization furnace for forward and reverse flow heating and a process control method, and relates to a carbonization device. Comprising a feeder, a clockwise and anticlockwise circulation kiln, a high-temperature fuel gas channel, a discharging cabinet, a cooling charcoal discharging device, a low-temperature fuel gas channel, a medium-temperature fuel gas channel, a two-section type combustion furnace, a high-temperature flue and a circulating type regulation and control pipeline system. Raw material carbonization comprises two stages, one stage is a countercurrent carbonization stage which is mainly completed in a countercurrent carbonization furnace stage, raw materials face downwards, flue gas faces upwards, and most of water in the raw materials is gasified in the stage. 2, a down-flow carbonization stage is mainly completed in a down-flow carbonization furnace stage, the raw materials and flue gas move downwards, and most organic matters in the raw materials are cracked in the stage; a process control method comprises the steps of ignition, heating, feeding carbonization, gas ring formation, two-stage combustion, energy self-supply, carbonization temperature regulation and control and gas flow regulation and control. Compared with a conventional carbonization system, an additional drying link is omitted, equipment is simplified, and the stability of the carbonization effect is ensured.

The present invention relates to a PDRN derived from HEK293 cells and a preparation method thereof. The steps include: (1) centrifuging HEK293 cells, adding a lysate to obtain a lysate solution; (2) adding magnesium sulfate, protease and nuclease to the lysate solution, adding sodium dodecyl sulfate and sodium chloride after incubation, and obtaining a crude PDRN product after enzyme inactivation and alcohol precipitation; (3) dissolving the crude PDRN product in a sodium chloride solution, filtering, alcohol precipitation, washing, dehydration and drying to obtain PDRN. The PDRN preparation method provided by the present invention uses HEK293 cells as a source, uses a nuclease and a protease double enzyme one-pot method to prepare PDRN, has simple process control, does not have special environments such as high temperature, strong acid and alkali, and has relatively mild conditions. It does not need to add special equipment, and can be industrially produced on a large scale. In addition, the base composition ratio of the PDRN derived from HEK293 cells is completely consistent with that of the human body, has anti-inflammatory function and tissue repair activity, and has great application value in the fields of soft tissue repair, medical and aesthetic post-repair.

The invention provides a method for preparing a soluble rhodium compound. The method comprises the following steps: S1, roasting; s2, washing; s3, dissolving; s4, removing barium ions; s5, precipitating; s6, dissolving; and S7, preparing an electroplating rhodium solution. The invention provides a method for preparing a soluble rhodium compound, the soluble rhodium compound is prepared by adopting a barium peroxide roasting method, and the prepared soluble rhodium compound does not limit component preparation of an electroplating rhodium solution and can be used for preparation and production of the soluble rhodium compound in the fields of chemical engineering, metallurgy, precision electronics and the like. The preparation method overcomes the defects of the original preparation method, improves the process stability, has the advantages of easiness in process control, low toxicity and environmental pollution to human bodies, low safety production risk and hidden danger and easiness in implementation, and reduces the toxicity and environmental pollution to human bodies and completely eradicates the safety production risk and hidden danger while improving the stability of the electroplating rhodium solution.

The application provides a homogenous multi-channel thin film transistor and a preparation method thereof. The preparation method comprises the following steps: preparing a gate electrode and a gate dielectric layer on a substrate in sequence; using an atomic layer deposition process to deposit at least two InGaO sub-channel layers on the gate dielectric layer in a direction away from the gate dielectric layer in sequence, and stacking the InGaO sub-channel layers to form a channel layer; during the deposition of each InGaO sub-channel layer, the same type of Ga precursor source and different types of In precursor source are used, or the same type of In precursor source and different types of Ga precursor source are used, so that each InGaO sub-channel layer has different carrier concentrations; during the deposition of each InGaO sub-channel layer, the sub-cycle periods are the same; performing a patterning treatment on the channel layer; preparing a source electrode and a drain electrode on the patterned channel layer to obtain the homogenous multi-channel thin film transistor. The application can simplify the preparation process, improve the interlayer interface quality, and does not need high-temperature annealing treatment.

The application relates to the field of semiconductors and discloses a cell structure of a silicon carbide MPS diode and the silicon carbide MPS diode, which comprises a silicon carbide substrate, a silicon carbide epitaxial layer located on the silicon carbide substrate, and a plurality of cells located on the silicon carbide epitaxial layer. The outer contour of the projection area of each cell on the silicon carbide epitaxial layer is a regular hexagon. The plurality of cells comprise at least two of a first cell, a second cell and a third cell. The boundary line between the Schottky junction region of the first cell and the first PN junction region is circular, and the boundary line between the Schottky junction region and the second PN junction region is a regular hexagonal deformation. The boundary line between the Schottky junction region of the second cell and the first PN junction region is a regular hexagonal deformation, and the boundary line between the Schottky junction region and the second PN junction region is circular. The boundary line between the Schottky junction region of the third cell and the first PN junction region and the second PN junction region is circular. The anti-surge capacity is improved, and the problem that the anode metal is easily melted and fails when a surge occurs is solved.

The utility model belongs to the technical field of radio frequency tags, and particularly relates to an antenna structure and a radio frequency identification tag. The dipole radiation arm comprises a linear part, bending line parts symmetrically arranged on two sides of the linear part, and sheet-shaped parts arranged on the outer sides of the bending line parts; the inductance loop comprises a chip connection point, and the chip connection point is sunken in the upper edge of the inductance loop; and the feeding point is the coupling position of the inductance loop and the dipole radiation arm, the lower edge of the inductance loop is overlapped with the straight line part, and the width of the lower edge of the inductance loop is consistent with that of the straight line part. The utility model is used for solving the problems of the existing UHF label in the roll-to-roll production process and the technical problem that the signal transmission capability cannot be maintained in various media at the same time in the application process.

The invention belongs to the technical field of microbial fermentation, and provides a method for improving the fermentation yield of hyaluronic acid, starch sugar and hyaluronidase liquid are fed in different fermentation stages, on one hand, the fed-batch sugar can prevent rapid viscosity generation in the fermentation process, and the condition of strain inactivation caused by uneven distribution of alkali liquor due to too high viscosity is reduced; on the other hand, hyaluronic acid molecular chains are split by hyaluronidase, the viscosity of hyaluronic acid fermentation liquor is reduced, the mass transfer effect of materials in the fermentation process is improved, and therefore the yield is increased. The method is high in yield and conversion rate of the hyaluronic acid fermentation liquor, simple in process and suitable for large-scale production and application.

The invention relates to the field of display, and discloses a crystal film screen based on a composite transparent electrode and a preparation method thereof, the crystal film screen comprises a transparent substrate, a composite transparent electrode layer and a lamp bead array; the composite transparent electrode layer is attached to the surface of the transparent substrate, and the lamp bead array is bonded to the side, away from the transparent substrate, of the composite transparent electrode layer. The transparent conductive oxide layer is filled in the crack gap through a magnetron sputtering process and compactly covers the surface, so that a continuous conductive path is formed, excellent balance between high light transmittance and low resistivity is realized, the non-periodic structure characteristic of disordered arrangement of a metal cracking network is utilized, and the light transmittance is improved. The moire phenomenon generated by regular wiring and a pixel array in a traditional photoetching process is effectively avoided from the physical principle, and the definition and the visual effect of a display picture are remarkably improved. In addition, the oxide layer on the surface can effectively block water and oxygen and protect an internal metal network from oxidation corrosion, so that the chemical stability of the electrode is improved.

The invention discloses a method for connecting a skutterudite thermoelectric material and an electrode by using a novel Al-containing high-entropy alloy diffusion barrier layer, and relates to the design and preparation of the diffusion barrier layer and the method for connecting the skutterudite thermoelectric material and the electrode. The method aims at solving the problems that diffusion cavities are huge due to unbalanced diffusion in a connector interface obtained through an existing skutterudite thermoelectric material welding method, and consequently a connecting connector is difficult to consider heat stability, interface resistance and mechanical performance at the same time. The method comprises the following steps: 1, cleaning a skutterudite thermoelectric material and an electrode; 2, preparing a diffusion barrier layer by using an electric arc melting or high-energy ball milling or rapid solidification method, and carrying out diffusion welding or brazing; and the diffusion barrier layer is made of an Al-Co-Cr-Fe-Ni system. The joint obtained by utilizing the novel Al-containing high-entropy alloy diffusion barrier layer can simultaneously have extremely low contact resistance, extremely high thermal stability and excellent mechanical properties. The method is suitable for connecting the skutterudite thermoelectric material and the electrode.

The present invention relates to a method and device for the coordinated treatment of garden solid waste and construction solid waste, and the treatment method includes: S1, garden solid waste is first sorted to obtain leaves and branches; leaves are squeezed to obtain squeezed liquid and squeezed residue; S2, construction solid waste is sorted to obtain wood components and inorganic components; S3, branches and wood components are mixed and crushed and then pyrolyzed and carbonized to obtain biochar; biochar is mixed with squeezed liquid and heated to obtain loaded modified biochar; S4, after the inorganic component is crushed, the residual material after magnetic separation is screened to obtain <1mm fine ash soil and mixed with loaded modified biochar to obtain mixed modified nutrient soil. The present invention utilizes garden waste and construction waste to produce high-quality modified nutrient soil through coordinated treatment, solves the problems of rapid reduction of garden branches, difficulty in composting leaves, and difficulty in utilizing fine ash soil in construction, fully embodies the concept of circular economy and clean production, and has good economic and environmental benefits.

A corrugated ceramic X-ray tube is characterized in that an anode assembly is arranged on the corrugated ceramic X-ray tube, the anode assembly is connected to the lower end of a tube shell assembly, a cathode assembly is mounted at the other end of the tube shell assembly, and a cathode lead cap is mounted at the top end of the tube shell assembly. The corrugated ceramic X-ray tube adopts a tube shell with a corrugated ceramic structure, the tube shell is matched and sealed with a kovar ring in a sealing manner, the tube shell is matched and sealed with a flange connecting ring in a flat sealing manner, brazing with a very high sealing requirement between ceramic and metal is completed by using a solder in a vacuum or hydrogen furnace, and the voltage-resistant insulating strength of the shell is enhanced. The corrugated ceramic tube shell enables the ray tube to be higher in mechanical strength, more reliable and safer, the ray tube is miniaturized when the ray tube is used on a portable computer, and real-time imaging is completed. The window is arranged on the lower half portion of the X-ray tube, compared with a glass tube, no glass shell is arranged outside the beryllium window, X-ray absorption of the window is reduced, mechanical strength is high, service life is longer, and application is wider.

This invention discloses a genetically engineered Bacillus subtilis strain for producing the spore-like amino acid Porphyra-334, its construction method, and its applications, belonging to the fields of microbial metabolic engineering and synthetic biology. Using Bacillus subtilis WB600 as a chassis, this strain: 1) knocks out the competing transaldolase gene ywjH, blocking precursor competition and byproduct synthesis pathways; 2) systematically introduces the key gene cluster NlmysABCD from Nostoc lindy NIES-25 for Porphyra-334 synthesis; 3) knocks out the key regulatory genes spo0A and spoIIIE controlling spore formation, thereby blocking the cell differentiation process and redistributing metabolic resources to the biosynthesis of the target product. The finally constructed engineered strain achieved a Porphyra-334 yield of 2.71 g / L under shake-flask fermentation conditions and a yield of 10.07 g / L under top-fermentation conditions.

The invention relates to a method for preparing an Al-Y2O3 composite coating through electro-deposition, which is used for preparing the Al-Y2O3 composite coating by using Y2O3 particles as second-phase particles through an electro-deposition technology. The preparation method comprises the following steps: putting anhydrous AlCl3, LiAlH4 and Y2O3 particles into a glove box filled with argon, weighing 4g of anhydrous AlCl3 and 0.28 g of anhydrous LiAlH4 by using a balance, putting the anhydrous AlCl3 and the anhydrous LiAlH4 into a beaker, and then weighing a certain amount of Y2O3 particles (20g / L-80g / L) and putting the Y2O3 particles into the beaker; and the beaker is sealed, taken out and put into a fuming cupboard. The method comprises the following steps: measuring 20ml of benzene by using a measuring cylinder, pouring the benzene into a sealed beaker by using a guide tube, and then putting the beaker into a magnetic stirrer under an ice bath condition; 5 ml of tetrahydrofuran is measured and slowly poured into the beaker through the guide tube, and in order to prevent the tetrahydrofuran from deteriorating, the process needs to be carried out under an ice bath condition. And adding tetrahydrofuran, sealing the beaker, stirring for 2-3 hours, and carrying out ultrasonic dispersion for 30 minutes. According to the method, an aluminum sheet is used as an anode, a copper sheet is used as a cathode, the current density is controlled to be 30-50 milliamperes / cm < 2 >, the temperature of a plating solution is 20-40 DEG C, the electrodeposition time is 30-75 min, and the Al-Y2O3 composite coating with the compact surface and uniform particle distribution can be obtained, and the Al-Y2O3 composite coating mainly comprises Al and Y2O3.

This application discloses a sealing material, its preparation method, and its application, relating to the field of solid oxide fuel cell sealing technology. The sealing material includes: material A, by mass percentage, comprising: BaO 50%~70%, B2O3 10%~20%, Al2O3 5%~20%, SiO2 5%~20%, CaO 0%~15%; and material B, by mass percentage, comprising: SiO2 40%~60%, TiO2 5%~15%, CaO 5%~15%, Na2O 0%~15%, BaO 0%~10%, Al2O3 0%~8%, K2O 0%~5%. Material A and material B are co-fired to form a double-layer composite sealing structure, comprising a ceramic water-proof layer and a gas-sealing layer nested from the inside out. The sealing material proposed in this application meets the medium and low temperature sintering range of 700~750℃, and can still be adapted to various battery materials and coatings below the working temperature of 600℃; moreover, the sintering range is controllable, and the wetting performance under various coatings is good, with wetting angles all less than 90°, effectively improving the adaptability of the sealing material.

The present invention provides a glass capillary array for gas storage and a preparation method thereof, comprising the following steps: selecting a pressure-resistant glass material to prepare a glass tube with smooth inner and outer surfaces, and drawing and cutting it into a glass single tube; arranging and bundling the glass single tubes, and then drawing and cutting them under a vacuum state to obtain a plurality of glass multi-tube arrays; arranging the glass multi-tube arrays into a screen arrangement mold row by row to form a closely arranged screen segment; placing the arranged screen segment into a vacuum melting and pressing system, and pressurizing it under a preset temperature and vacuum environment, so that all the multi-tubes in the screen segment are melted and pressed into one; hanging and fixing the melted and pressed screen segment, and slowly placing one end into the effective temperature zone of a wire drawing furnace, and heat-insulating the screen segment within the required temperature, so that one end of the screen segment is melted into one, and the multi-tube structure is sealed; slowly cooling the screen segment to anneal it, and obtain the required glass capillary array. The method of the present invention effectively improves the overall pressure resistance of the glass capillary and eliminates the environmental restrictions brought by other sealed materials.

According to the method for preparing the diborane provided by the invention, boron trichloride does not need to be fed for multiple times in stages, complicated reaction temperature control is not needed, intermediate control steps in the production process are few, the generation efficiency of the diborane is favorably improved, and the process difficulty is reduced. The method comprises the following steps: reacting boron trichloride with metal hydroboron in the presence of trimethyl borate and an ether solvent to prepare diborane gas; the boron trichloride is fed in a one-step feeding manner.

The invention relates to a method for rapidly preparing a molybdenum antimonide-based material by utilizing a method combining mechanical alloying, cold pressing and ultrafast heat treatment, in particular to a method for rapidly preparing the molybdenum antimonide-based material by utilizing a pure solid-phase reaction. The method aims at solving the problems that an existing molybdenum antimonide-based material is long in preparation period, high in energy consumption and complex in process control by adopting a traditional melting-annealing-hot pressing sintering method. The method comprises the following steps: 1, pretreating a molybdenum antimonide-based raw material by using a mechanical alloying method, and carrying out cold pressing on the obtained mechanical alloying powder to form a block body; 2, carrying out ultrafast heat treatment on the cold-pressed block by using an ultrafast heat treatment method based on a Joule heating principle to obtain a final molybdenum antimonide-based material; the molybdenum antimonide-based material comprises but is not limited to Mo < 3 > Sb < 7-x > M < x > (M = Te, Se), Mo < 3-x > Re < x > Sb < 7 >, Mo < 3-x > Ru < x > Sb < 7 >, Mo < 2.5 > Ru < 0.5 > Sb < 7-x > Tex, Ni < x > Mo < 3-y > Ni < y > Sb < 7 >, A < 0.05 > Mo < 3 > Sb < 5.4 > Te < 1.6 > (A = Mn, Fe, Co and Ni). According to the method, the molybdenum antimonide-based material can be simply and rapidly prepared by combining mechanical alloying, cold pressing and ultrafast heat treatment. The method is suitable for large-scale rapid preparation of molybdenum antimonide-based materials in the technical fields of thermoelectric materials, catalytic materials, sodium ion battery electrodes, superconduction and the like.

The present invention provides a microchannel catalyst metering and conveying system, which comprises a catalyst unit, which is sequentially connected to a feed metering unit and a conveying unit; the feed metering unit comprises a pipe resistance module, and the outlet of the catalyst unit is connected to the inlet of the pipe resistance module. The system achieves precise control of feed by enlarging the pressure regulation range and reducing feed flow fluctuation.

The invention relates to a method for producing a semiconductor element, in particular a power semiconductor element, from a wafer, comprising the following steps:-providing a wafer substrate (101),-treating a structured wafer surface (102),-applying a carrier wafer (103) to the wafer substrate (101), and-reducing the thickness of the wafer substrate (101) by wafer thinning, characterized in that the wafer substrate (101) is provided with a substrate surface (102), and the substrate surface (102) is provided with a substrate surface (102). The carrier wafer (103) is applied to the wafer surface (102) by a cofferdam filling method step. The invention also relates to a corresponding semiconductor component.

The high-stability center positioning device comprises an oil pressure clamping jaw, a supporting plate is arranged on one face of the oil pressure clamping jaw, a pulling jaw is arranged at the tail end of the oil pressure clamping jaw, a main shaft is arranged on the supporting plate, a spring is arranged on the main shaft, a chuck baffle is arranged at one end of the spring, and a center chuck is arranged on the chuck baffle. The hub turning device has the advantages that when a hub is turned, stability is improved, the hub is firmly fixed, jumping and vibration cannot be generated in the rotating cutting process, product rotating fluctuation change in the machining process is reduced, cutting paths cannot be increased due to hub jumping in cutter cutting, and cutter loss is reduced.

The invention relates to the technical field of biological fermentation process monitoring, and particularly discloses biological fermentation gas online monitoring equipment which comprises an outer box body, the outer box body is composed of a high box part a and a short box part b, a detection box and an analysis host are installed in the high box part a, and an electromagnetic valve used for controlling gas inlet is installed on the side wall, close to the short box part b, of the detection box; a sensor array which transmits data with the analysis host is mounted at one end, far away from the electromagnetic valve, in the detection box, a high-voltage arc generator is mounted at the position, close to an air outlet of the electromagnetic valve, in the detection box, and an air inlet dehumidification device is mounted at the air inlet end of the electromagnetic valve. The device has the beneficial effects that through the combination of the sampling pump, the filter element and the spiral dehumidification pipe, the continuous online collection and efficient pretreatment of sample gas are realized, the interference of sample gas moisture and pollutants on the sensor is avoided, the accuracy and real-time performance of detection data are ensured, and the risks of off-line sampling lagging and sample pollution are overcome.

The invention discloses an efficient etching method and device based on microwave ECR and radio frequency plasma coupling, and relates to the technical field of plasma etching.The device comprises a cylindrical metal waveguide tube, and the interior of the cylindrical metal waveguide tube is divided into an upper cavity on the upper portion and an etching area on the lower portion; a plurality of rectangular waveguide tubes communicated with the interior of the cylindrical metal waveguide tube are uniformly distributed on the outer wall of the cylindrical metal waveguide tube corresponding to the upper cavity, and the tail end of each rectangular waveguide tube is provided with a microwave input port communicated with a microwave source; a quartz cavity communicated with the airflow inlet and a coil wound on the outer wall of the quartz cavity are arranged in the upper cavity, the two ends of the coil are connected with a direct-current power supply and / or a radio-frequency power supply through wires, and a plasma discharge area is arranged in the quartz cavity. The electron cyclotron resonance technology and the radio frequency plasma inductive coupling technology are used for jointly regulating and controlling the microwave plasma, the energy conversion efficiency from microwaves to the plasma is improved, more uniform plasma can be generated, the etching area is remarkably increased, and efficient etching is achieved.