969results about How to "Efficient production" patented technology

The invention belongs to the technical field of gene engineering and enzyme engineering, and particularly relates to an ornithine decarboxylase mutant as well as a coding gene, an expression vector, a recombinant strain and application thereof. The ornithine decarboxylase mutant is obtained by mutating wild ornithine decarboxylase ODC10 of which the amino acid sequence is shown as SEQ ID NO.1, the catalytic activity of the obtained mutant is improved, and the biosynthesis efficiency of 1, 4-butanediamine is favorably improved. The recombinant strain for expressing the ornithine decarboxylase mutant constructed by the invention can efficiently synthesize 1, 4-butanediamine, and the molar conversion rate of ornithine is remarkably improved, so that the production benefit is improved, and the production cost is reduced.

The invention relates to the technical field of polyurethane production, in particular to a polyurethane super-hydrophobic foam composite material for packaging and a preparation method thereof. The polyurethane super-hydrophobic foam composite material for packaging is prepared by reacting a component A and a component B according to a mass ratio of 100: (31.7-46.5), wherein the component A comprises polyether polyol X with high molecular weight and high activity, polymer polyol, a chain extender, a cross-linking agent, an organic metal catalyst, a tertiary amine catalyst, a foam stabilizer, a foaming agent, a flame retardant, inorganic filler and the like, and the component B is isocyanate modified by polyether polyol Y with high functionality. An ester bond, a rigid benzene ring group and a Si-O-Si chain segment are introduced into a polyether polyol molecular chain segment to improve the internal soft segment structure and chemical crosslinking density of the polyurethane foam, and the prepared super-hydrophobic polyurethane foam not only has excellent hydrophobicity and high temperature resistance, but also is low in density and good in mechanical property.

The invention relates to the technical field of powder metallurgy, in particular to a method for preparing a graphene composite copper plate strip by using red copper waste through combination of powder metallurgy and a medium-temperature continuous extrusion process, and the method comprises the following steps: selecting the red copper waste containing different components according to an application scene of the graphene composite copper plate strip; crushing the red copper waste into red copper blocky crushed aggregates; adding 0.1-8% by mass of graphene into the red copper blocky crushed aggregates, and grinding to form first-size mixed powder; carrying out semi-melting stirring processing on the mixed powder with the first size to form a graphene-red copper mixed base material, and carrying out continuous extrusion treatment; and the graphene composite copper plate strip blank is treated according to a conventional red copper cold rolling process, and the graphene composite copper plate strip is obtained. According to the method, a powder metallurgy process is combined with a medium-temperature continuous extrusion process, so that the red copper waste is recycled in a non-smelting mode, and a parent body of the high-performance graphene composite copper plate strip is produced. The invention further correspondingly discloses application of the graphene composite copper plate strip.

The invention belongs to the technical field of organic photoelectric materials, and particularly relates to preparation and application of a benzoselenadiazole covalent organic framework material. According to the invention, benzoselenadiazolyl tetraaldehyde is used as a construction unit, o-toluidine, 4, 4 '-biphenyl diamine or 3, 3'-dihydroxybenzidine is used as a connecting body, and three kinds of novel rigid COFs, namely HBU-COF-CH3, HBU-COF-H and HBU-COF-OH, are synthesized in sequence. The COFs has high cycling stability, has outstanding advantages in the aspect of sustainable heterogeneity of molecular catalysts, and can be used as a heterogeneous photocatalyst to realize efficient hydrogen peroxide production under visible light, and the photocatalytic hydrogen peroxide production performance of the COFs is superior to that of most reported COFs materials. Wherein the yields of HBU-COF-CH3, HBU-COF-H and HBU-COF-OH are as high as 12910 [mu] mol g <-1 > h <-1 >, 8838 [mu] mol g <-1 > h <-1 > and 7679 [mu] mol g <-1 > h <-1 > in sequence.

The invention provides an electro-hydrogen ammonia heat co-production device and method taking biomass gas as a raw material. The device comprises an oxygen supply chamber, a fuel cell layer, a methane reforming hydrogen production chamber, an electrolytic bath layer, a synthesis ammonia chamber and a cooling water chamber, the electro-hydrogen ammonia heat co-production device taking the biomass gas as the raw material adopts a multi-layer sleeve type structure and is sequentially provided with an oxygen supply chamber, a fuel cell layer, a methane reforming hydrogen production chamber, an electrolytic bath layer, a synthetic ammonia chamber and a cooling water chamber from inside to outside. The invention provides an electricity-hydrogen-ammonia-heat co-production device and method taking biomass gas as a raw material, the biomass gas is taken as the raw material, electricity generation, hydrogen production, ammonia synthesis and heat supply are integrated in the same device, an electricity-hydrogen-ammonia-heat co-production system is formed in cooperation with auxiliary facilities, and a co-production method of the electricity-hydrogen-ammonia-heat co-production system is provided. The system is high in integration level, beneficial to investment reduction, low in equipment complexity, convenient to operate and maintain, and beneficial to large-scale popularization and efficient production.

The invention discloses an OpenCRISPR (Open Clustered Regularly Interspaced Short Palindromic Repeats)-NLS (Non-Least Squares) fusion protein for gene editing of penaeus monodon, a construction method of the OpenCRISPR-NLS fusion protein and a nucleotide construct containing the OpenCRISPR The invention also discloses an application of the fusion protein or the nucleotide construct in gene editing of penaeus monodon and an application of the fusion protein or the nucleotide construct in population improvement of aquaculture penaeus monodon. According to the invention, codon optimization is carried out on a coding sequence of OpenCRISPR-1 protein, and a nuclear localization signal (NLS) is fused with the OpenCRISPR protein subjected to codon optimization; the method has the advantages of being efficient in gene expression, accurate in targeting positioning capacity, excellent in genome editing efficiency, capable of reducing the off-target effect, wide in adaptability, capable of promoting sustainable aquaculture, remarkable in economic and social value and the like.

The invention discloses an intelligent temperature control system and method for hot-pressing compounding equipment, and belongs to the technical field of hot-pressing compounding, and the system establishes a functional relationship between the temperature of an internal adhesive layer of a part and the temperatures of the upper and lower surfaces of the part, the temperature of a mold, the environment temperature and the heating time. According to the takt time needed by production, the temperature and heating time needed by the upper mold and the lower mold are automatically calculated, the temperature of the upper surface and the lower surface of a part is monitored in real time, and when the heating time is up, the temperature of an adhesive layer just reaches a set value, so that product quality defects caused by insufficient heating are avoided, and energy loss caused by excessive heating is avoided. Therefore, on-demand heat supply is achieved, energy waste is reduced, the production period is shortened, and the production efficiency and the quality stability of the hot-pressing composite technology are improved.

The medium-temperature radial forging method comprises the steps that pretreatment is conducted, specifically, a niobium-tungsten alloy extrusion bar blank is heated for 60-180 minutes at the temperature of 750-950 DEG C, rapid forging and straightening are conducted, and a medium-temperature radial forging bar blank is obtained and annealed for 60-120 minutes at the temperature of 1250-1450 DEG C; medium-temperature radial forging is conducted, specifically, a two-step method is adopted, in the first step, a bar blank is preheated to 80-100 DEG C and coated with Ta1350 high-temperature glass powder, heat preservation is conducted for 90-180 minutes at the temperature of 1050-1150 DEG C, and the bar blank is forged into a bar with the diameter of 70 + / -1 mm in the mode that the diameter is reduced by 7-10 mm every time; and in the second step, the heating and coating processes are repeated, the diameter is reduced by 5-7 mm every time, and the bar with the required specification is manufactured. By optimizing the medium-temperature forging and annealing process, the fine grain structure is controlled, the high-temperature mechanical property, creep resistance and oxidation resistance of the material are improved, and the material is suitable for aerospace engines and other high-temperature and high-pressure scenes. Compared with a traditional method, the technology improves the yield, shortens the production period, reduces the labor intensity, is suitable for large-scale production, reduces surface air suction, oxidation and burning loss, and improves the production efficiency and the finished product quality.

The invention discloses a continuous automatic micro-nano metal powder production device and method. The continuous automatic micro-nano metal powder production device comprises an ultrasonic atomization system, a high-temperature pyrolysis system, a product collection system and a tail gas treatment system which are sequentially connected. The product collection system comprises a physical separation device and an electrostatic-magnetic field synergistic adsorption device; the electrostatic-magnetic field synergistic adsorption device comprises an electrostatic collection device and a magnetic field adsorption device arranged on the outer side of the electrostatic collection device. The electrostatic collection device comprises a positive electrode electric field arrangement mechanism and a negative electrode electric field arrangement mechanism, and the positive electrode electric field arrangement mechanism is arranged in a cylindrical inner cavity of the negative electrode electric field arrangement mechanism; the positive electric field arrangement mechanism comprises a trunk and a plurality of positive electrode plates distributed in the axial direction of the trunk. Metal powder is collected in a physical separation, high-voltage static electricity and magnetic field cooperation mode, the problems that nanoscale and micron-sized fine powder is prone to leakage and difficult to collect are effectively solved, the powder collection rate is increased, and effective recycling of products is ensured.

The invention provides an assembly quality control method and system based on the industrial Internet of Things and a medium, the method is executed by an industrial Internet of Things management platform of the assembly quality control system based on the industrial Internet of Things, and the method comprises the following steps: obtaining quality inspection information of a plurality of parts to be assembled, and determining the assembly quality of the parts to be assembled based on the quality inspection information and the assembly information; determining an assembly risk value of at least one assembly process through an assembly database; generating assembly parameters in response to the assembly risk value meeting a risk condition; acquiring assembly process data of the assembly work, and determining the assembly quality of the completed process based on the assembly process data; in response to the situation that the assembly quality does not meet the quality requirement, subsequent assembly parameters are determined based on the assembly quality, and quality early warning information is generated based on the assembly quality and the subsequent assembly parameters; based on the assembly quality, quality update data is generated. The possibility that the assembly quality is unqualified can be predicted, and early warning or assembly parameter adjustment can be timely given out according to the condition that the assembly quality is unqualified.

The invention relates to the technical field of aluminum processing, and particularly provides a crystallizer monitoring system and method for aluminum processing, and the system comprises an image obtaining module which obtains an image of molten aluminum in a crystallizer in real time, and transmits the image information to a molten aluminum state monitoring module; the molten aluminum state monitoring module is used for analyzing the image information in real time, filtering interference through feature extraction and judging whether the state of the internal molten aluminum is abnormal or not through an abnormality judgment model; the temperature monitoring module is used for monitoring the temperature distribution conditions of the molten aluminum crystals and the cooling system in real time and judging whether the temperatures of the molten aluminum crystals and the cooling system are abnormal or not; and the automatic control module is used for remotely receiving molten aluminum state monitoring and temperature monitoring results, analyzing the probability and risk level of accidents caused by the monitoring results by using an event tree model, and remotely controlling equipment start and stop and operation parameter adjustment according to preset program logic. The technical problem that in the prior art, monitoring of a crystallizer and cooling water in the deep well casting process cannot be achieved is solved.

The invention provides a preparation method and application of a fluorine-free sand streak agent. The preparation method of the fluorine-free sand streak agent comprises the following steps: S11, activating the surface of PMMA micro powder by utilizing a low-temperature plasma technology; s12, dispersing the activated PMMA micro powder in an organic solvent to obtain a reaction solution A; dispersing an acrylic monomer in an organic solvent to obtain a reaction solution B; dispersing an initiator in an organic solvent to obtain a reaction solution C; and S13, under the protection of nitrogen, introducing the reaction liquid A, the reaction liquid B and the reaction liquid C into a micro-channel reactor for graft copolymerization, cleaning and drying to obtain the PMMA micro powder with acrylic acid grafted on the surface.

The invention relates to the technical field of zinc powder processing equipment, in particular to a multi-stage grinding system for preparing high-purity zinc powder, which comprises a primary grinding unit, a secondary grinding unit, a tertiary fine grinding unit, a separating and screening unit, a collecting unit, a cooling system and a control system, crushing larger zinc particles into a preset coarse particle size; and the secondary grinding unit is a ball mill and is used for further grinding the zinc powder subjected to primary grinding to ensure that particles reach a medium particle size range. According to the multi-stage grinding system, through automation, multi-stage smashing and real-time feedback control, efficient production of zinc powder is achieved, and it is guaranteed that the particle size of the zinc powder is uniform, and the purity of the zinc powder is high. A system integrated cooling mechanism prevents oxidation, a separation screening unit improves screening efficiency, and a sealed conveying device ensures environmental protection and safety. Overall automation improves production efficiency and is suitable for large-scale industrial application.

The invention relates to the technical production field of metabolic engineering and genetic engineering, and particularly provides a uracil production strain as well as a construction method and application thereof. According to the strain, a uridine kinase gene udk is knocked out on an E.coli W3110 genome, and meanwhile, a T7RNA polymerase gene is integrated; the uridine monophosphate kinase gene pyrH is weakened; the method comprises the following steps: overexpressing a carbamyl phosphate synthetase gene carAB, a ribose phosphate pyrophosphate kinase gene prsA, a pyrimidine-5 '-nucleoside enzyme gene ppnN, UMP phosphohydrolase genes umpH and umpG, a ribonucleoside hydrolase 1 gene rihA and a glutamine synthetase gene glnA; an orotic acid nucleoside monophosphate decarboxylase gene pyrF and an orotic acid ribosyltransferase gene pyrE of wild type bacillus subtilis B.subtilis 168 are introduced in a heterologous manner, so that an orotate nucleoside monophosphate decarboxylase gene pyrF and an orotate ribosyltransferase gene pyrE are obtained. The safe, efficient and low-cost production of the uracil is realized.

The invention discloses an emulsifying device for salicylic acid preparation, which belongs to the technical field of salicylic acid preparation and processing, and has the technical key points that the emulsifying device comprises an emulsifying box, and an annular rotary stirring mechanism can be correspondingly driven to adjust the stirring mode and perform rotary stirring operation through an arranged stirring liquid conveying control mechanism; by combining two stirring modes of rotation and revolution, salicylic acid and an emulsifier can be mixed and stirred more comprehensively from multiple angles, the uniformity of the emulsion is greatly improved by the stirring mode, and in addition, the stirring speed is greatly improved by randomly adjusting the stirring position. According to the emulsifying machine, the same equipment can meet various different emulsifying processing requirements, so that the investment cost of the equipment is reduced, the liquid conveying mechanism can be correspondingly driven to perform liquid adding operation through the arranged stirring liquid conveying control mechanism, the manual operation is remarkably reduced, the production cost is reduced, and the production efficiency is improved; the stirring device has the advantages of convenience in stirring adjustment, diversified stirring modes and convenience in automatic liquid adding.

The invention provides an intelligent edible mushroom planting system, a control method and a terminal, and the system comprises a sensor group module which comprises a plurality of types of sensors and is used for collecting environment parameters of each growth stage of edible mushrooms; the central control module is in communication connection with the sensor group module so as to receive the environmental parameters of the edible mushrooms in each growth stage from each sensor; the central control module is provided with a growth model obtained based on deep learning, and the growth model is used for generating optimal environment parameters of the edible mushrooms in each growth stage; and the environment control module is in communication connection with the central control module and is used for receiving the optimal environment parameters from the central control module so as to adjust the environment parameters of the edible mushrooms in each growth stage in real time. According to the application, the environmental conditions can be automatically adjusted and optimized according to the growth requirements of different types of edible mushrooms in different growth stages.

The invention provides a manufacturing method of a high-integration half-hole step circuit board and the half-hole step circuit board, belongs to the technical field of circuit board manufacturing, and solves the problems that the half-hole step circuit board is low in production efficiency and poor in product performance and quality. The method comprises the following steps: providing a first substrate and a second substrate; performing first pretreatment on the first substrate to obtain a to-be-laminated first substrate; performing second pretreatment on the second substrate to obtain a to-be-pressed second substrate; performing press-fit copper deposition treatment on the first substrate to be pressed and the second substrate to be pressed to obtain a substrate after press-fit copper deposition; carrying out electroplating and etching treatment on the substrate subjected to press-fit copper deposition to obtain a substrate subjected to electroplating and etching treatment; and carrying out forming treatment on the substrate after electroplating etching treatment to obtain the high-integration half-hole step circuit board. According to the scheme, the circuit board is firstly manufactured in a layered mode, then pressing and forming treatment are carried out, efficient production and manufacturing of the half-hole step circuit board are achieved, and the product performance quality is improved.

The invention discloses a planting method for promoting growth of eucalyptus root systems and effectively improving typhoon resistance. The planting method comprises the following steps: (1) selecting a forest land; (2) forest land cleaning; (3) planting density; (4) digging planting pits; (5) applying a bottom-layer bag-controlled slow-release fertilizer; (6) applying a base fertilizer; (7) field planting; (8) applying a shallow-layer bag-controlled slow-release fertilizer; (9) complementary planting; and (10) topdressing. According to the technology, bag-controlled slow-release fertilizers with different slow-release time are applied in different places, nutrients are continuously supplied to plants under deep root systems and around shallow root systems within a certain time range, volatilization, leaching loss and permeation of nitrogen fertilizers, fixation of phosphate fertilizers and migration loss of potash fertilizers can be reduced to the maximum extent, and the utilization rate of the fertilizers is increased. Meanwhile, through the fertilizer taxis of the eucalyptus root systems, extending growth of deep root systems and shallow root systems is guided, the grabbing and attaching force of the eucalyptus is improved, and therefore the typhoon resistance of the eucalyptus is effectively improved.

The invention belongs to the technical field of sodium-ion battery negative electrode materials, and particularly relates to a biomass-based closed-pore hard carbon material, a preparation method thereof and a sodium-ion battery negative electrode material. According to the invention, biomass is subjected to preheating treatment and is converted into a hard carbon precursor with carbonization capability; the hard carbon precursor has a firm structural frame in structure and contains abundant ultra-micropores. And performing Joule heat treatment on the hard carbon precursor, and performing instantaneous high-temperature carbonization to quickly generate the biomass-based closed-pore hard carbon material with adjustable closed pores, carbon interlayer spacing and defect structures. The biomass-based closed-pore hard carbon material prepared by adopting the method disclosed by the invention has the advantages that the storage performance on sodium ions is remarkably improved, and the initial coulombic efficiency and the reversible capacity are high. The method is easy and convenient to operate, raw materials are easy to obtain, the biomass-based closed-pore hard carbon material is rich in closed pores and moderate in interlayer spacing, the defects of the prior art in the aspects of preparation and performance are overcome, and the biomass-based closed-pore hard carbon material has wide application prospects in the field of energy storage.

The invention discloses high-density ultra-thin electronic-grade glass fiber cloth, and relates to the technical field of glass fiber cloth preparation, the high-density ultra-thin electronic-grade glass fiber cloth is formed by weaving warp yarns and weft yarns with the monofilament diameter of 4.0 microns, the warp and weft density is 90-100 pieces / inch, an air jet loom is combined with an auxiliary air jet mechanism for plain weaving, and it is guaranteed that fibers are tightly arranged; the preparation method comprises the steps of low-speed warping, weaving, desizing, deep splitting, cleaning and surface treatment. During weaving, through low-tension control and low-pressure airflow assistance, the fabric structure is more compact and uniform; a three-step method is adopted to gradually eliminate most slurry, and the slurry is further removed through liquefaction desizing; splitting and cleaning adopt a water flow and air flow combined mode, so that fiber opening is ensured, and the slurry residue rate is reduced to the minimum; finally, the strength of the high-density ultrathin electronic-grade glass fiber cloth is improved through treatment of a silane coupling agent; and low-tension and extremely low-slurry-residue-rate weaving of the high-density ultrathin electronic-grade glass fiber cloth is realized.

The invention relates to a continuous casting and rolling rapid processing technology of a medicine foil. The process comprises the steps of raw material preparation, smelting and refining, continuous casting, cooling treatment, heating and rough rolling, finish rolling, annealing treatment, surface treatment, slitting and the like. By controlling the smelting temperature, the casting speed, the rolling speed, the roller surface roughness, the annealing parameters and other process conditions, efficient production of the aluminum foil is achieved, and the surface smoothness, the thickness precision, the tensile strength and the ductility of the medicine foil are guaranteed. The thickness of the finished medicine foil is 0.02-0.04 mm, the tensile strength is 80-120 MPa, the ductility is not lower than 1.5%, and the surface roughness Ra value is controlled to be 0.1-0.3 micron. The process can produce high-quality medicine foil meeting the medicine packaging requirement, has the advantages of being efficient, stable, energy-saving and environment-friendly, and is suitable for large-scale industrial production.

The invention belongs to the technical field of veterinary vaccines, and particularly relates to porcine rotavirus nanoparticles as well as a preparation method and application thereof. The invention provides a porcine rotavirus nano-particle. The porcine rotavirus nano-particle comprises a porcine rotavirus VP8 protein fragment, a dioxo tetrahydropteridine synthase and a linker, wherein the linker comprises a porcine rotavirus VP8 protein fragment and a dioxo tetrahydropteridine synthase; the porcine rotavirus VP8 protein fragment is connected with the dioxo tetrahydropteridine synthase through the linker, and the linker is connected with the dioxo tetrahydropteridine synthase; the amino acid sequence of the porcine rotavirus VP8 protein fragment is as shown in SEQ ID NO. 1. The porcine rotavirus nanoparticles can display more antigens at a time, so that the immunogenicity of vaccines is improved, and animals can be induced to generate higher antibody level. Results of the embodiment show that the prepared porcine rotavirus nanoparticle vaccine can cause a higher specific antibody level, and compared with a porcine rotavirus VP8 protein fragment monomer immune group, the porcine rotavirus nanoparticle vaccine can cause a higher neutralizing antibody level.

The invention relates to the field of data processing, in particular to a stacking method for a panel furniture processing production line, which comprises the following steps of: initializing data of a current processing layer in a stacking process, evaluating an effective placing space of the current processing layer based on the size and gravity center data of a panel in the stacking process, and selecting a proper panel for placing. And after the plates are placed each time, the gravity center data of the current processing layer and the whole stack are calculated and updated, so that the stability and safety of the stack are ensured. And finally, the system completes all stacking operations by setting stacking cut-off conditions. According to the intelligent stacking method, data analysis and robot automation technologies are combined, the stacking process of the panel furniture is optimized, the space utilization rate is increased, the stacking stability and safety are ensured, and finally the efficient and stable production process is achieved.

The invention relates to the technical field of bioengineering, in particular to a system for producing valerolactam through whole-cell catalysis and application of the system. The system provided by the invention comprises L-lysine, and also comprises halomonas with the functions of synthesizing 5-aminovaleric acid, inhibiting GabT protein and enhancing beta-alanine coenzyme A transferase. According to the method, L-lysine is taken as a substrate, halomonas is utilized, 5-aminovaleric acid is synthesized firstly, degradation of the 5-aminovaleric acid is reduced by inhibiting the function of GabT protein in the halomonas, the function of beta-alanine coenzyme A transferase is enhanced, the metabolic flux from the 5-aminovaleric acid to the valerolactam is increased, and finally the valerolactam is efficiently produced.

The invention discloses steel for a low-cost efficient gas shielded welding wire and a production method of the steel. The steel comprises the following chemical components in percentage by mass: 0.03-0.10% of C, 0.80-1.60% of Mn, less than or equal to 0.020% of S, less than or equal to 0.020% of P, 0.50-1.00% of Si, less than or equal to 0.010% of V, Ti, Nb and Alt, less than or equal to 0.030% of Cr, Ni and Cu, less than or equal to 0.0010% of Ca, less than or equal to 0.0045% of N and the balance of Fe and inevitable impurities. The production method comprises the steps of converter smelting, LF external refining, square billet continuous casting, straight roller way conveying, hot rolling spinning and air cooling packaging. The crystallizer adopts electric stirring and final stirring, the central shrinkage cavity and central segregation of a continuous casting billet are eliminated, a wire product with the specification of phi 5.0-7.0 mm is produced by adopting a heating-free direct rolling technology, and the steel for the gas shield welding wire is efficiently produced at low cost.

The present invention relates to the technical field of powder metallurgy, and more particularly to a method for preparing a graphene composite copper strip by powder metallurgy combined with a medium-temperature continuous extrusion process using copper waste. According to the application scenario of the graphene composite copper strip, copper waste containing different components is selected; the copper waste is crushed into copper block fragments; 0.1-8% of graphene by mass is added to the copper block fragments, and a first-size mixed powder is formed by grinding; the first-size mixed powder is semi-melted and stirred to form a graphene-copper mixed substrate, which is continuously extruded; the graphene composite copper strip blank is processed with reference to a conventional copper cold rolling process to obtain a graphene composite copper strip. The present invention combines a medium-temperature continuous extrusion process with a powder metallurgy process to realize the recycling of copper waste in a non-smelting manner and the production of a matrix of a high-performance graphene composite copper strip. The present invention also discloses the application of the graphene composite copper strip.

The invention relates to the technical field of concrete prefabrication processing equipment, and particularly discloses a concrete prefabricated part processing and forming device which comprises a conveying table body, a discharging structure, a putting structure and a forming structure. A conveying belt is arranged in the middle of the upper wall of the conveying table body, the discharging structure is fixedly arranged on the rear side of the right end of the conveying table body, the putting structure is fixedly arranged on the rear side of the conveying table body and located on the left side of the discharging structure, and the forming structure is arranged on the conveying table body. The production line has the advantages of automation, flexibility, mold management, product quality improvement, labor intensity reduction, cost saving and the like, and an efficient and reliable production mode is provided for prefabrication production of road edge stone bricks.

The invention discloses a production method and system for slitter edge removal, splitting, shaping, distance expansion and film covering of a flexible assembly battery piece, and the production method sequentially comprises a full-automatic slitter edge removal process, a primary splitting process, a secondary splitting process and a shaping, distance expansion and film covering process, so that a large-size battery piece is split into hundreds of small-size battery pieces. And shaping, distance expanding and film covering operations are completed, and finally arrangement and distance expanding production of the battery pieces are achieved. According to the invention, the key process of splitting the complete large-size battery piece can be realized, hundreds of battery pieces can be arranged in order at equal intervals through two-time distance expansion operation, and compared with a traditional manual piece arrangement mode, the production efficiency can be obviously improved by dozens of times, so that the automatic production of the flexible battery piece is realized. The production method has the remarkable advantages of improving the production efficiency, reducing the cost, improving the product quality, achieving the high automation degree and the like.

The invention relates to the technical field of mineral resource recovery and environment-friendly beneficiation, and discloses a method for recovering phosphorite from micro-fine fraction tailings, which comprises the following steps: grading by a cyclone: micro-fine fraction ore pulp is introduced into the cyclone for grading, an overflow product enters an overflow pipe, and a sand setting product enters a subsequent desulfurization flotation process; carrying out copper-sulfur separation flotation: carrying out dehydration treatment on the crude copper concentrate obtained after desulfurization, and then entering a copper-sulfur separation flotation process to separate out copper fine powder and sulfur fine powder; the desulfurized minerals enter the micro-fine particle grade phosphorus selection process, the flotation process of one-roughing, one-sweeping and four-concentrating is adopted, and phosphorus concentrate is selected. According to the method, high-efficiency purification of copper and sulfur concentrates is achieved and tailing pollution is reduced through concentration classification of a cyclone, impurity removal of an inclined plate, desulfurization flotation and copper-sulfur separation flotation, in the phosphorite recycling process, the flotation process of one-time roughing, one-time sweeping and four-time concentration is adopted, automatic control equipment is arranged, and the recycling rate and purity of the phosphate concentrates are remarkably improved.

The invention discloses a method and application for enhancing cytidine production, and belongs to the field of genetic engineering and microbial engineering. The present invention knocks out cytidine deaminase gene cdd, uridine kinase gene udk, pyrimidine-specific ribonucleoside hydrolase gene rihB, nucleotide 5'-monophosphate nucleosidase gene ppnN, pyruvate oxidase gene poxB and integrates and expresses 5'-CTP diphosphohydrolase, orotate phosphoribosyltransferase, uridylate kinase mutant gene PyrH (R92G / D93G), as well as phosphoribosyl pyrophosphate synthetase gene prs, glucose-6-phosphate dehydrogenase gene zwf and 6-phosphogluconate dehydrogenase gene gnd, and constructs a recombinant Escherichia coli with enhanced cytidine synthesis ability, and the cytidine yield reaches 61.9g / L in a 30L fermenter without adding antibiotics and inducers, which can be used to realize the industrial production of cytidine and realize green biomanufacturing.