336results about How to "Short processing time" patented technology

The invention provides a liquid crystal optical flow control chip, an optical imaging device and application, the liquid crystal optical flow control chip comprises a substrate, the substrate is provided with a closed microstructure, the microstructure comprises a plurality of sample pools and a plurality of optical pools, and the sample pools and the optical pools are the same in number and are in one-to-one correspondence; each sample cell is communicated with one optical cell corresponding to the sample cell through a micro-mixing channel; each sample cell is provided with an inlet / outlet pipeline I, and each optical cell is provided with an inlet / outlet pipeline II; the micro-mixing channel comprises a first channel and a second channel which are communicated with each other, and the first channel is provided with a sample introduction pipeline. The liquid crystal optical flow control chip and the optical imaging device are developed on the basis of an adapter conformation change principle in combination with liquid crystal birefringence performance, different liquid crystal optical morphologies of a sample on the liquid crystal optical flow control chip are observed through a polarizing microscope, and then the purpose of detecting exosomes in the sample is achieved. The kit has the advantages of high throughput, rapid detection and high sensitivity.

The utility model discloses an MVR (mechanical vapor recompression) concentrated solution treatment device, which belongs to the field of wastewater treatment and comprises a first coagulating sedimentation device, a second persulfate advanced oxidation device, a second persulfate adding device for adding persulfate into the second persulfate adding device, a third biochemical treatment device, a fourth membrane treatment component and a fifth clear water tank. Wherein the MVR concentrated solution to be treated can be fed into the first coagulating sedimentation device. The first coagulating agent adding device is connected with the first coagulating sedimentation device, and the first coagulating agent adding device is used for adding a coagulating agent into the first coagulating sedimentation device, so that the MVR concentrated solution is flocculated and settled, and first coagulated sludge and first coagulated supernate are respectively obtained. The method can be suitable for MVR concentrated solution treatment scenes with different scales and treatment requirements, the wastewater treatment efficiency is improved, the treatment cost is reduced, efficient and stable treatment of wastewater can be achieved, and the method has high application value and wide popularization and application value.

The invention discloses data line welding injection molding processing equipment which comprises a first machine body, a second machine body, a first feeding mechanism, a conveying mechanism, a peeling mechanism, a second feeding mechanism, a welding mechanism, an injection molding mechanism and a rotating disc mechanism. The second machine body is arranged on the right side of the first machine body, the rotating disc mechanism comprises a rotating disc and a rotating device, the second jig is detachably arranged on the rotating disc, the injection molding mechanism comprises a first seat body, an injection molding machine and a first grabbing and transferring module, and the first grabbing and transferring module transfers the second jig to the first seat body and the rotating disc in a reciprocating mode; the first machine body is provided with a second grabbing and transferring module; thus, through the design of all the mechanisms, the wires are fed, peeled and welded on the first machine body and are matched with the second grabbing and transferring mechanism and the rotating disc to be transferred to the injection molding mechanism to be subjected to injection molding operation, automatic machining of the wires, connectors and shells is achieved, the production efficiency of data lines is improved, the machining time is short, and the production efficiency is improved. The use requirements of users are met, and the application range is wide.

The invention discloses a preparation method of a wool-based nitrogen-doped magnetic biochar material, which comprises the following steps: firstly, impregnating impurity-removed and scale-removed wool in a ferric chloride solution for coordination reaction to obtain a wool / iron complex; adding melamine, metal salt and the wool / iron complex into deionized water, sealing to form a closed environment, and then vibrating to uniformly disperse the metal salt and melamine on the surface of the wool; taking out and drying until no water exists to obtain a metal salt / melamine / wool mixture; carbonizing the mixture in an oxygen-free environment, and removing metal salt and impurities in the product; and drying to obtain the wool-based nitrogen-doped magnetic biochar material. The magnetic biochar material loaded with magnetic nanoparticles is prepared from wool, has excellent adsorption effect and adsorption catalysis effect on complex mixed dye liquor, achieves catalysis and adsorption synergistic integration, has superparamagnetism, and can realize solid-liquid separation and recovery by setting an external magnetic field.

The invention relates to a compound microorganism deodorization fungicide as well as a preparation method and application thereof, and belongs to the technical field of microorganism application. The invention provides a compound microorganism deodorization bacterium agent. The compound microorganism deodorization bacterium agent is prepared from bacillus cereus GXMU-Q5.3, streptomyces beihaiensis GXMU-J15 and lactobacillus paracasei GXMU-G1, the viable count ratio of the bacillus cereus GXMU-Q5.3 to the streptomyces beihaiensis GXMU-J15 to the lactobacillus paracasei GXMU-G1 is (1 to 2): (1 to 2): (1 to 2). The strain of the composite microbial deodorant agent is screened from soil and water at the stacking place of the marine product processing waste, the decomposition and deodorization effects on the marine product processing waste are obvious, the bacteria have a synergistic effect, and the deodorization effect of the composite microbial agent is improved by 40% or above compared with that of a single strain; the cost is low, the efficiency is high, the application range is wide, the deodorization period is short, and the safety is high.

The invention discloses a flange machining method for a large-diameter thin-wall cylinder part. The flange machining method comprises the steps of material preparation, blanking, edge rolling or roll bending, welding, overall expansion, flange and mold correction which are sequentially carried out. According to the method, overall expansion is adopted for the J-shaped outer flanging structure and the barrel, the conical end face type surface structure is obtained to serve as the middle structure of the J-shaped structure, and then the final J-shaped outer flanging is obtained by independently conducting edge bending treatment and mold tire correction treatment on the conical structure. According to the method, the problem of welding deformation caused by a traditional welding method is solved, the problem that follow-up assembly is affected due to the fact that the J-shaped outer flanging contour is not accurate enough is avoided, the tool cost is further saved, and the molded surface forming quality is improved.

The invention relates to a method for eliminating residual stress in additive manufacturing of nickel-based superalloy, and relates to the technical field of additive manufacturing materials. According to the main technical scheme, stress relief treatment is carried out in the mode that continuous pulse current treatment is applied to the additive manufacturing nickel-based superalloy, so that at least part of residual stress in the additive manufacturing nickel-based superalloy is eliminated, and the additive manufacturing nickel-based superalloy subjected to stress relief treatment is obtained. According to the method, the residual stress in the additive manufacturing nickel-based superalloy can be effectively reduced. According to the method, the internal structure state of the original alloy is not changed, meanwhile, the method is low in treatment temperature, short in treatment time, more efficient and more energy-saving, and the requirement for green and sustainable development of the current industry is met.

The invention belongs to the technical field of silicon nitride tape-casting blank waste recycling, and particularly relates to a silicon nitride tape-casting blank waste recycling method, a tape-casting blank and application, the silicon nitride tape-casting blank waste and a liquid medium are mixed according to the mass ratio of 10: (3-4), wet ball milling is conducted for 5-36 h, and slurry is obtained; wherein the particle size of a ball milling medium for wet ball milling is 8-12mm; the slurry is filtered and then subjected to tape casting, and a tape casting blank is obtained; according to the method, recycling of the waste materials can be achieved only by adopting a wet ball milling method, the cost is effectively reduced, the waste material recovery rate can reach 90% or above, the silicon nitride ceramic substrate prepared from the casting blank can meet the use requirement, the utilization efficiency of the silicon nitride casting blank waste materials is effectively improved, and the silicon nitride ceramic substrate has the advantages of being environmentally friendly and free of pollution. And the production cost is reduced.

The invention relates to a high-entropy alloy with excellent creep property and a preparation method thereof. The alloy is expressed as FeaCobCrcNidTapAlqMn by atomic mole percentage, and 10 < = a < = 20, 20 < = b < = 25, 10 < = c < = 20, 25 < = d < = 35, 5 < = p < = 10, 0 < = q < = 8, and 0 < = n < = 5. The preparation method comprises the steps that all the raw materials are taken according to the designed components, then smelting is conducted under the protective atmosphere, and after solid solution water quenching treatment, hot rolling treatment and secondary solid solution treatment are conducted, heat preservation is conducted at the temperature of 750-950 DEG C, and then quenching is conducted. The product is obtained by reasonably regulating and controlling components and performing thermal deformation and thermal treatment processes. Under the high-temperature creep condition of 750 DEG C / 350 MPa, the service life of the obtained product reaches up to 1245 h and is far longer than that of similar products, the room-temperature tensile strength is larger than 1.5 GPa, the bottleneck that a Laves type eutectic high-entropy alloy does not have room-temperature tensile plasticity is broken through, and wide engineering application prospects are achieved.

The invention relates to a hydrodynamic cavitation demulsification and cyclone separation device for emulsified oil wastewater, which comprises a fixed cylinder, and a dispersion cavity, a cavitation cavity, a separation cavity and a light phase fluid cavity which are communicated in sequence are arranged in an inner cavity of the fixed cylinder; the separation cavity is provided with a heavy-phase fluid outlet, and the light-phase fluid cavity is provided with a light-phase fluid outlet; the dispersing cavity is provided with an additive inlet for adding a demulsifier; the dispersion cavity is provided with a liquid inlet, and emulsified oil wastewater flows into the dispersion cavity from the liquid inlet; the dispersion cavity is used for dispersing oil-in-water emulsion, mixing emulsified oil wastewater and a demulsifier, and enabling liquid in the dispersion cavity to form rotational flow to flow to the cavitation cavity; the cavitation cavity is used for cavitation fluid and cracking emulsified oil wastewater; under the action of rotational flow, heavy-phase water of the fluid entering the separation cavity migrates to the inner wall of the fixed cylinder and rotates to flow out of the heavy-phase fluid outlet, and light-phase oil enters the light-phase fluid cavity and flows out of the light-phase fluid outlet. The device is short in treatment time, high in treatment efficiency, simple in structure and low in operation and maintenance cost.

The invention discloses a combined packaging box which is provided with boundary beams, upper opening beams and lower opening beams as frames of the combined box, a first corner module and a second corner module are used for connecting the corresponding upper box body frame and the lower box body frame, all the boundary beams belong to third glass fiber reinforced plastic edgings, all the upper opening beams belong to first glass fiber reinforced plastic edgings, and all the lower opening beams belong to second glass fiber reinforced plastic edgings. The lower opening beam belongs to the second type of glass fiber reinforced plastic edgings, when a packaging box with the size specified by a user needs to be produced, a mold does not need to be remanufactured, the rectangular size of the combined box can be adjusted only by cutting the corresponding glass fiber reinforced plastic edgings and the box plates according to requirements, machining edging sealing embedding openings and bonding and combining the edgings and the box plates through adhesives, machining time is short, cost is low, and further, production efficiency is high. The first corner module and the second corner module each comprise a middle corner block, all the middle corner blocks belong to third glass fiber reinforced plastic edgings, and therefore the depths of the upper box body and the lower box body can be adjusted after the middle corner blocks with different heights are cut.

The invention discloses a composite microbial preparation capable of improving the quality of flue-cured tobacco leaves and a use method of the composite microbial preparation. The composite microbial preparation is prepared from a culture solution of bacillus thuringiensis HNCS-93, a culture solution of bacillus mucilaginosus NK-102 and a culture solution of bacillus firmus SAB-1 (B.firmus SAB-1). The invention further discloses a preparation method of the composite microbial preparation capable of improving the quality of the flue-cured tobacco leaves. The composite microbial preparation provided by the invention not only can obviously improve the Schwerg value, but also can effectively improve the content of total Maillard reactants and total free amino acids, and also can greatly reduce the content of starch, pectin and lignin; and meanwhile, the method has the advantages of convenience in use and short treatment time.

The invention provides a method for comprehensively recovering lithium and cobalt from a waste lithium cobalt oxide battery positive electrode material, which comprises the following steps: (1) pretreating the waste lithium cobalt oxide battery positive electrode material to obtain a lithium cobalt oxide positive electrode active material; uniformly mixing the lithium cobalt oxide positive active material with a sulfenyl compound and a carbon source to obtain a mixture; the mixture is subjected to inert atmosphere roasting, grinding, leaching and filtering in sequence, and a lithium-containing solution and sulfur-containing filter residues are obtained; (2) carrying out acid leaching impurity removal on the sulfur-containing filter residues, and filtering to obtain cobalt sulfide residues; (3) roasting the cobalt sulfide slag in an oxygen atmosphere to obtain a roasted product; and (4) the roasted product is leached and filtered, and a cobalt sulfate solution and cobaltosic oxide are obtained. According to the method, soluble sulfate and high-purity cobalt oxide can be obtained, and the method is short in process, low in cost and high in lithium selectivity.

The utility model discloses a plate production heat treatment machine's water circulation filtration cooling structure, including tank and particle processing cylinder, tank interior fixed connection is equipped with the assembled particle processing cylinder, tank interior middle position is transversely fixed connection is equipped with the partition plate, the particle processing cylinder is fixed connection to the top of partition plate, and the partition plate is equipped with the particle processing cylinder. And an electromagnetic discharging valve is installed at the bottom end of the particle processing cylinder, a feeding pipeline is fixedly connected to the bottom end of the electromagnetic discharging valve, and a spiral propeller is movably assembled in the feeding pipeline. According to the feeding device for explosion-proof membrane production, the variable-speed motor, the spiral propeller and the feeding pipeline are arranged, the feeding pipeline is adopted for feeding to a plastic particle processing machine, the variable-speed motor drives the spiral propeller to rotate, the particle propelling speed of the spiral propeller can be adjusted by adjusting the output rotating speed of the variable-speed motor, and feeding is more uniform; the labor cost is saved, and the problem that continuous and uniform feeding cannot be achieved is solved.

The invention relates to the technical field of ferrous metallurgy casting, in particular to a drainage sand removing and recycling method and device. Comprising a mechanical arm, a lifting rotation controller, a controller arm, a sand suction cylinder, a sand conveying pipeline, a sand collecting tank and an injection pump. The lifting and rotating controller is fixedly mounted on the mechanical arm; the controller arm is connected with the lifting and rotating controller, and the lifting and rotating of the controller arm are controlled by the lifting and rotating controller; the sand suction cylinder is connected with the controller arm, the sand suction cylinder is of a U-shaped structure, and one end of the sand suction cylinder is a horn mouth used for sucking drainage sand; one end of the sand conveying pipeline is positioned above the tundish cover sprue gate, and the end part of the sand conveying pipeline is bent downwards to be connected with the other end of the sand suction cylinder; the other end of the sand conveying pipeline is connected with the sand collecting tank; the sand collecting tank is connected with an injection pump pipeline, and the injection pump provides suction power. The ladle filler sand, harmful gas in gaps of the ladle filler sand and a long nozzle and a small part of molten steel in contact with the ladle filler sand in a steel ladle can be discharged out of tundish molten steel and recycled.

The invention discloses a method for detecting metal elements in a perfluoropolymer, which comprises the following steps: (1) adding a perfluoropolymer sample into a quartz lining tube for ashing to obtain the quartz lining tube filled with the sample after ashing; (2) adding a digestion solution into the quartz lining tube filled with the ashed sample, and then carrying out microwave digestion to obtain a digested liquid; (3) preparing the digested liquid to obtain a liquid to be detected; and measuring the content of the to-be-measured metal elements in the to-be-measured liquid by adopting an inductively coupled plasma mass spectrometer. According to the method, the high-stability and corrosion-resistant perfluoropolymer sample is subjected to in-situ ash content microwave digestion, then the inductively coupled plasma mass spectrometer is adopted to measure the content of the to-be-measured metal elements in the perfluoropolymer sample, component loss and introduction of new impurities are avoided, and the method has the advantages of being easy and convenient to operate, short in treatment time, more thorough in digestion, high in accuracy and the like. The test precision is high, the range of treatable samples is wide, and samples can be treated in batches.

The invention discloses a preparation method and application of a red fluorescent copper nano-cluster. According to the preparation method, a red fluorescent copper nano-cluster aqueous solution is prepared at room temperature by using polyvinylpyrrolidone as a protective agent, 3-mercaptophenylboronic acid as a stabilizer and a reducing agent and water-soluble copper salt as a copper source. The preparation method has the advantages of being simple in preparation process, low in instrument requirement, short in treatment time, low in cost and the like, the fluorescence quantum yield of the prepared red fluorescent copper nano-cluster is 4.9%, and the prepared red fluorescent copper nano-cluster has the advantages of being good in water solubility, good in stability, high in photobleaching resistance, high in salt resistance, long in fluorescence service life and the like, has high sensitivity and selectivity to Congo red, and is suitable for industrial production. The method can be applied to detection of fluorescence quenching type Congo red.

This invention provides a plasma-modified glass fiber reinforced polyetheretherketone (PEEK) composite material and its preparation method, belonging to the field of glass fiber reinforced materials. The composite material is prepared by treating a PEEK film and glass fiber cloth with glow discharge plasma, followed by hot pressing, resulting in a composite material with good compatibility between PEEK and glass fiber. This method can significantly improve the interfacial bonding strength between glass fiber and PEEK resin, thereby improving the mechanical properties of the composite laminate. The interlaminar shear strength of the composite material is increased by 43% compared to the untreated composite material. Furthermore, this method also has the advantages of energy saving, environmental protection, short processing time, and high efficiency.

The present application provides a machining tool path control method, including: obtaining a 3D model; extracting a curve of the final profile in the 3D model as a driving curve; obtaining the feed direction of the tool as a guide curve; determining the initial path curve of the tool according to the driving curve, the guide curve, and the initial profile; generating a universal direction with the driving curve as a generatrix point; obtaining a unique direction set and a feed amount selected in the universal direction; determining the machining end curve of the tool; using the machining end curve as a new initial path curve, repeating the steps of determining the machining end curve of the tool according to the initial path curve, the unique direction set, and the feed amount until the driving curve coincides with the machining end curve; combining all initial path curves into a continuous tool path curve, and controlling the tool to move according to the tool path curve. The present application can improve the surface finish of the special-shaped surface after machining.

The present invention relates to the field of food processing technology, specifically to a high-concentration CO2 cyclic processing device, comprising a CO2 storage tank, a first processing system, a second processing system and a recovery system; the CO2 storage tank is connected to the first processing system and the second processing system respectively, and the first processing system and the second processing system both include a processing kettle, a heating device and a cooling device; the recovery system includes a plurality of delivery pipes arranged in parallel, and the two ends of each delivery pipe are respectively connected to the processing kettles in the first processing system and the second processing system, and the delivery pipes include a normal pressure delivery pipe, a boosted delivery pipe and a delivery pipe provided with a vacuum generating device. The present invention can recycle more than 99% of CO2, save energy and reduce emissions, and has a short processing time, so as to realize fast and efficient processing of food materials. The present invention also relates to the application of the device in food processing, and also relates to a processing method of parboiled rice, which can significantly improve the processing efficiency and processing quality of parboiled rice.

The invention belongs to the technical field of photoresist, and particularly relates to photoresist stripping liquid as well as a preparation method and application thereof. The photoresist stripping liquid contains a first amine compound, a second amine compound and an organic solvent I, wherein the first amine compound has a structure as shown in a formula (1) or a formula (2); the second amine compound has a structure as shown in a formula (3). The key point of the invention lies in that the specific first amine compound and second amine compound are adopted as key components of the photoresist stripping liquid, and the obtained photoresist stripping liquid has strong photoresist removal capability and effect, can achieve basically no residue on a base material, and has the advantages of short treatment time, high efficiency, small corrosion to the base material, and low cost. And the substrate at the lower layer is hardly damaged. # imgabs0 #

The invention discloses a wafer IPA drying method for improving wafer edge particle aggregation, and belongs to the technical field of semiconductor manufacturing. The method comprises the following steps: after a wafer is cleaned, lifting the wafer from pure water to the 4 / 5 position of the wafer to be separated from the water surface by using a bottom supporting table, and then clamping the 2 / 3 edge position of the wafer by using a top clamp to continuously lift until the wafer is completely separated from the water surface; in the lifting process, the surface of the wafer is purged through mixed gas of N2 and IPA, and the completely-dried wafer is obtained. According to the invention, the wafer is dried by replacing a wafer lifting mode and cooperating with an IPA drying mode, so that the wafer can be completely dried, and the watermark problem caused by local dryness due to contact between the wafer and the supporting table in the medium replacement process can be avoided. The method is wide in practicability, simple in technological process, short in treatment time, low in cost and good in application prospect.

The invention discloses an application of ultrasound and teuvincenone H diterpenoid treatment in reduction of tenebrio molitor protein allergy, the tenebrio molitor protein is treated by ultrasound and teuvincenone H diterpenoid, so that the binding capacity of the tenebrio molitor protein and immunoglobulin E (IgE) can be reduced, and the allergy of the tenebrio molitor protein is further reduced. The invention discloses other effects of teuvincenone H diterpene except for anti-tumor and anti-inflammatory effects for the first time, and the method has the advantages of simple process steps, short treatment time, low temperature, high efficiency, rapidness and environmental friendliness, is beneficial to wide application of related technologies in the field of food industry, and provides a brand new scheme for developing safe and high-quality insect protein food.

Provided is an information processing method, the method comprising: a first access point acquiring channel state information of a plurality of user equipments, the plurality of user equipments comprising reflective user equipments and transmissive user equipments, the reflective user equipments being devices that communicate by using reflective functions of a plurality of omnidirectional metasurfaces, and the transmissive user equipments being devices that communicate by using reflective functions of a plurality of omnidirectional metasurfaces; the transmission user equipment is equipment for performing communication by utilizing the transmission functions of the plurality of omnidirectional metasurfaces; optimizing the first precoding vectors of the plurality of pieces of user equipment to obtain second precoding vectors; and sending the channel state information and the second precoding vector to the network equipment. The invention further provides communication equipment and a computer readable storage medium. The technical problem of how to design the precoding vector, the transflective phase and the transflective amplitude in the scene of omnidirectional metasurface-assisted non-cell network communication is at least solved.

This invention belongs to the field of biomedical technology, specifically relating to a pharmaceutical composition formulation containing ertapenem and its preparation method. The ertapenem-containing pharmaceutical composition formulation comprises the following raw materials: 10-20 parts ertapenem, 40-60 parts choline-leucine ionic liquid, 30-50 parts polyethylene glycol-polylactic acid-glycolic acid copolymer, 2-5 parts gluconolactone, 2-3 parts antioxidant, 40-50 parts deionized water, 3-5 parts surfactant, and 20-30 parts mannitol. This invention utilizes choline-leucine ionic liquid to enhance the solubility and stability of the polyethylene glycol-polylactic acid-glycolic acid copolymer with ertapenem, forming uniform micelles to protect the drug from hydrolysis. Liquid nitrogen freezing technology is used to improve preparation efficiency and product quality, ensuring biocompatibility.

The invention discloses a method for improving the leaching rate of uranium ore, which can perform controllable shock wave operation in a well or a small number of wells to unblock and increase gaps in a mining area, and shock waves impact off fine particulate matters such as sand, rock powder and the like and precipitated blockages such as chemical precipitates such as calcium, magnesium, aluminum and the like attached in rock stratum gaps of the uranium ore, so that the leaching rate of the uranium ore is improved. Fine particles attached to the filter screen are vibrated off and peeled off; the in-situ leaching liquid is injected after being heated to a certain temperature, and the heated in-situ leaching liquid flows into the uranium mine rock stratum gap. The method improves the leaching rate of uranium ore, can operate at any time for a long time, achieves a continuous effect, improves the uranium well oil extraction efficiency by 10% or above, has a wide application prospect, and has great significance for improving uranium ore strategic material storage in the nuclear industry in China.

The utility model discloses a low-cost radome trepanning tool in the technical field of tools, the trepanning tool comprises a first drill jig, a plurality of second drill jigs are arranged outside the first drill jig, a plurality of drill bushings are arranged on the first drill jig and the second drill jigs, and the drill bushings are used for trepanning a radome. The radome tapping device solves the problems of low tapping precision and high tapping cost in the prior art, and can be used for radome tapping.

The invention relates to a controllable low-oxygen silicon preparation method capable of reducing oxidation of silicon wafer cutting waste, and belongs to the technical field of silicon wafer cutting waste recovery and utilization. The method comprises the following steps: crushing and shaping silicon wafer cutting waste blocks to obtain silicon wafer cutting waste particles; then the silicon wafer cutting waste particles are evenly laid in a microwave heating furnace in a layered mode, the silicon wafer cutting waste particles on the adjacent horizontal layers are isolated through cloth in the vertical direction, and gaps are reserved between the adjacent silicon wafer cutting waste particles on the same horizontal layer; according to the initial water content, the initial oxygen content, the expected oxygen content, the device vacuum degree, the set temperature and the particle size, the preset time of microwave heating controllable dewatering and drying of the silicon wafer cutting waste particles is determined; under the vacuum condition, microwave heating can controllably dehydrate and dry to reduce the actual moisture content of the silicon wafer cutting waste and the actual oxygen content of the product, so that the controllable preparation of the low-oxygen silicon product is realized by reducing the oxidation of the silicon wafer cutting waste.

The invention discloses a Cu-Fe alloy material with high strength, high conductivity and high heat resistance and a preparation method thereof.The Cu-Fe alloy material is prepared from, by mass, 0.8-3% of Fe, 0.05-0.2% of Mg, 0-0.1% of Si, 0-0.2% of Nb, 0-0.1% of V, 0-0.1% of P and the balance Cu, and meanwhile the total mass percentage of Si, V, P and Nb is smaller than 0.2%. According to the preparation method of the Cu-Fe alloy material, the rapid treatment effect of electric pulses is utilized, a water quenching process is combined, and the high-strength, high-conductivity and high-heat-resistance Cu-Fe alloy material is obtained. And the work-hardened structure state is rapidly fixed, so that the dislocation density and the structure distortion state are reserved, and the Cu-Fe alloy material with high strength, high conductivity and high heat resistance is obtained.

The present invention discloses an application of a human CYP2C9 recombinase in the denitration of nitrocellulose. The present invention applies the human CYP2C9 recombinase to the denitration of nitrocellulose, which can convert the nitrate ester group into nitrate and nitrite. After reacting with nitrocellulose for 7 days, the nitrogen content of the nitrocellulose with an original nitrogen content of 12.7% is reduced to 11.585%, and the denitration treatment time is significantly shortened compared with the traditional biological method. The present invention has low production cost, simple process, mild reaction conditions, and is environmentally friendly, and can achieve efficient denitration of nitrocellulose.