2367results about How to "Simple steps" patented technology

The invention belongs to the field of machine tool machining, and relates to a tooth turning machine tool rest main shaft split type automatic tool changing mechanism which comprises a split type main shaft, a tool handle, a disc spring, a pull claw and a detection device. The split main shaft comprises a first main shaft and a second main shaft which are connected through a loose screw; the cutter handle is connected with the first main shaft through a pull claw, the pull claw tensions a blind rivet on the cutter handle through tensioning force generated by a disc spring, and the conical surface of the cutter handle is attached to the conical surface of the second main shaft; the detection device comprises a first detection switch and a second detection switch and is used for detecting whether the cutter handle is installed on the second main shaft or not. By adopting the split type main shaft design, even under the condition that the cutter is locked, the cutter handle can be easily ejected out by loosening the connecting screw, and the main shaft does not need to be integrally disassembled; by arranging the detection switch and the detection point used in cooperation with the detection switch, whether the tool is installed on the main shaft or not can be accurately judged, signal feedback is provided for the automatic tool changing process, and the accuracy and safety of the tool changing action are ensured.

The invention provides a bidirectional parallel storage battery capacity checking system and method, and relates to the field of battery capacity checking, and the system comprises a station control system, a plurality of direct current buses, an alternating current bus, a plurality of storage battery packs, a battery optimizer and a bidirectional charging and discharging module, and is used for realizing storage, charging and discharging management and online capacity checking of storage batteries. The storage battery pack comprises a plurality of battery modules connected in parallel, and each battery module comprises storage batteries managed in pairs and a charging and discharging control circuit and is used for managing the charging and discharging states of the storage batteries. According to the capacity checking system and method provided by the invention, capacity checking is allowed to be carried out on a single battery pack, the storage batteries needing capacity checking can exit independently, and other battery packs continue to supply power normally under the condition that the overall power supply is not influenced, so that the parallel connection mode not only avoids power interruption and resource waste, but also realizes fine management of the battery packs, and the power supply efficiency is improved. The service life of the storage battery is prolonged, and the continuity and the stability of a power system are ensured.

The invention belongs to the technical field of preparation of lithium bis (fluorosulfonyl) imide, and particularly relates to a preparation method of lithium bis (fluorosulfonyl) imide, which comprises the following steps: step 1, reacting chlorosulfonic acid with chlorosulfonyl isocyanate under the action of a first catalyst to generate bis (fluorosulfonyl) imide; 2, hydrogen fluoride gas is introduced into the bis (chlorosulfonyl) imide generated in the step 1, and bis (fluorosulfonyl) imide is obtained under the action of a first catalyst; and 3, adding a first lithium salt into an organic solvent, adding the imidodisulfuryl fluoride obtained in the step 2 in the stirring process, and carrying out ion exchange to obtain the lithium imidodisulfuryl fluoride. According to the invention, the conversion rate is high, the usage amount of the catalyst is reduced, the steps are simplified, and the yield is further improved.

The invention provides a hollow electrical stimulation electrode array device and a preparation method thereof, and belongs to the technical field of medical instruments, the hollow electrical stimulation electrode array device comprises a substrate and a microneedle array, the substrate comprises a substrate base body, a first conductive lead, a second conductive lead and a substrate insulating layer, the first conductive lead and the second conductive lead are oppositely arranged and are laid on the first surface of the substrate base body at a certain interval; the microneedle array comprises a microneedle array base body, and a hollow channel used as a drug delivery channel is formed in a microneedle base body of the microneedle array base body. An electroporation electrode is improved to be a hollow electrode, medicine in a liquid storage tank can enter intracellular fluid through a hollow channel, the medicine can be injected into a human body through a medicine feeding opening by adopting the hollow electrode, then electroporation is applied to open nanometer through holes of a cell membrane, the medicine enters the intracellular fluid, the steps are simple, the cost is low, and the efficiency is high. The infection risk and the treatment cost of a user are reduced, and due to the design of the liquid storage pool, the functions of medicine storage and injection buffering can be achieved.

The invention belongs to the technical field of fiber modification, and particularly relates to a preparation method of degradable biomass high-water-absorption short fibers. According to the invention, cellulose short fibers such as plant fibers, regenerated cellulose fibers and the like are used as raw materials, and the degradable biomass short fibers with high water absorption performance are prepared through the technological processes of pre-humidification, cake making, hanging into a reaction tank, alkalization, etherification, neutralization, washing, oiling, wet feeding, wet splitting, drying, metering, packaging and the like. The water absorption rate of the obtained degradable biomass high-water-absorption short fiber is 60 to 100g / g, and the fineness of the degradable biomass high-water-absorption short fiber is 1.29 to 10.0 dtex. The fiber can meet the use requirements in the fields of hygienic personal care products, blood-absorbing cotton medical dressings, surgical pads, dirt treatment bags, water-blocking yarns and water-blocking tapes, agriculture, forestry, landscaping, desert greening, oil exploitation and the like, is an environment-friendly and renewable non-petrochemical functional material, is green and environment-friendly, and has a very wide application prospect.

The invention belongs to the technical field of welding seam detection, and particularly relates to a welding seam detection device for a magnetic levitation traffic low-vacuum pipeline, which is characterized in that a helium mass spectrum leakage detection structure is arranged on the outer side of the vacuum pipeline, a helium inflation structure is arranged on the inner side of the vacuum pipeline, and a rolling structure is arranged at the bottom end of the vacuum pipeline and comprises a third base; supports are symmetrically fixed to the two sides of the top face of the third base, V-shaped frames are hinged to each support in a bilateral symmetry mode, rollers are connected between the ends of the two V-shaped frames, the two ends of a rotating shaft of each roller penetrate through the two V-shaped frames respectively and are rotationally connected with the contact positions of the two V-shaped frames, one end of each roller penetrates through the corresponding V-shaped frame and is fixedly provided with a first gear, and protective covers are fixed to the end faces of the V-shaped frames; a gear motor is fixedly installed on the outer end face of the protective cover, an output shaft of the gear motor penetrates through the protective cover to fix a second gear, the second gear is meshed with the first gear, and the two rolling structures are arranged in a mirror symmetry mode. The device does not need to lay a leak detection tool around a welding seam, facilitates leak detection, improves leak detection efficiency, and improves leak detection accuracy.

The invention provides a hydrogel composition. The hydrogel composition is prepared from the following components in percentage by weight: 0.5 to 15 percent of an adhesion component, 0.5 to 10 percent of a moisturizing component, 0.01 to 5 percent of a bioactive component, 0.01 to 5 percent of a physical crosslinking agent, 0.01 to 2 percent of a flavoring component, 0.01 to 2 percent of an antimicrobial component and the balance of medical purified water, wherein the bioactive component comprises at least one of lipoic acid, tea polyphenol, lactic acid bacteria extract and metabiotics; the antimicrobial component comprises at least one of copper ions, benzyl alcohol, p-hydroxyacetophenone, sodium methyl hydroxybenzoate and sodium ethyl hydroxybenzoate. According to the hydrogel composition disclosed by the invention, the low-concentration antimicrobial component is introduced, so that the antimicrobial component has more stable and effective bactericidal activity and can be more stably adhered to a wound, and the hydrogel composition can have better antibacterial performance and a function of promoting wound healing without additionally adding antibiotics.

The name of the invention is application of Peniazathilone A as an alpha-glucosidase inhibitor and a preparation method of the Peniazathilone A. The invention belongs to the technical field of medicines, and relates to application of an azone compound as the alpha-glucosidase inhibitor. The compound has the following structure: # imgabs0 #. The compound Peniazathilone A is obtained by extracting, separating and purifying an ethyl acetate extract phase of a fermented product of Penicillium sp from soil, and the alpha-glucosidase inhibition activity of the compound is evaluated by adopting a pNPG method. Experimental results show that the IC50 value of the compound Peniazathilone A is 86.8 [mu] M (the IC50 value of a positive control acarbose is 5.97 mM), and the inhibition rate reaches 92.4% when the concentration of the compound is 0.466 mM. The compound has obvious activity of inhibiting alpha-glucosidase, is expected to be developed into a novel hypoglycemic drug, and has potential medical and health-care values.

The invention discloses a quantum state preparation method and device, equipment and a medium. The method comprises the following steps: setting a target quantum state to be prepared; setting a Hamiltonian, wherein the Hamiltonian is a negative value of an outer product of a left vector and a right vector of the target quantum state; constructing a variable component sub-line including training parameters according to the target quantum state; substituting a preset parameter value as a training parameter into the variable component sub-line so as to output a training quantum state evolved by the variable component sub-line; measuring an expected value of the training quantum state, which is evolved by the variable component sub-line, about the Hamiltonian; training a training parameter of the variable component sub-line through a classical optimizer until the training parameter or an expected value is converged to a set threshold value; comparing the training parameter or the expected value with a set threshold value; and outputting the training quantum state evolved by the variable component sub-line under the convergence condition as a to-be-prepared target quantum state. The preparation of any quantum state can be efficiently and accurately realized.

The invention discloses a preparation method and an application of an S and N co-doped small-nano-size high-entropy intermetallic compound. 2, 2 '-bithiophene is simultaneously used as a metal ligand and a sulfur source to be applied to synthesis of the high-entropy intermetallic compound, and sulfur atoms in the substance can form a complex with metal ions, so that a metal precursor can be uniformly and firmly distributed on the surface of a commercial carbon carrier, and formation of the high-entropy intermetallic compound in the subsequent annealing process is facilitated; the S and N co-doped high-entropy alloy intermetallic compound catalyst synthesized by the invention has excellent electrochemical performance in a fuel cell, and particularly has remarkable performance in the aspect of stability; wherein the mass activity of the S and N co-doped high-entropy alloy intermetallic compound PtCuNiCoFe / C-SN (PCNCF-SN) catalyst under the condition of 0.9 V (vs.RHE) reaches 2.7 A * mg <-1 > Pt, which is more than 12.3 times of that of commercial Pt / C; and in the aspect of stability, the mass activity can still be kept at 65% or above after 100000 circles of accelerated durability.

The invention discloses a supporting assembly for an embedded rear cover, relates to the technical field of automobile parts, and aims to solve the technical problems of unstable supporting and tedious supporting steps after folding. The supporting assembly is arranged at the fulcrum of the folding body and comprises at least one of a first supporting mechanism and a second supporting mechanism, and the fulcrum of the folding body is supported so that the state of the folding body relative to the vehicle body rear box can be kept. According to the supporting assembly provided by the embodiment of the invention, the front side and the rear side of the folded embedded rear cover are supported through the first supporting mechanism and the second supporting mechanism respectively, the folded embedded rear cover is supported in an omnibearing manner, the supporting stability is improved, and the clamping groove is matched with the first supporting mechanism, so that the supporting stability is improved. And only the clamping surface needs to be clamped on the to-be-clamped surface, so that the steps in the supporting process are simplified.

The invention relates to the technical field of advanced manufacturing, and discloses a patterned multilayer structure construction method based on immiscible phase auxiliary filling. The construction method of the patterned multilayer structure comprises the following steps: S1, dispersing assembly units in a curable water phase to obtain a pre-assembly liquid; s2, the pre-assembly liquid is added to the bottom layer of an assembly cavity, an insoluble phase is added to the upper layer to be flush with the upper edge of the assembly cavity, standing waves are applied, the assembly units form patterns in the pre-assembly liquid, the pre-assembly liquid is cured, and a first structural layer is obtained; s3, removing the immiscible phase, adding the assembling liquid to the surface of the first structural layer, adding the immiscible phase again until the immiscible phase is flush with the upper edge of the assembling cavity, applying standing waves to enable the assembling units in the pre-assembling liquid to form patterns, and solidifying the pre-assembling liquid to obtain a second structural layer; and S4, repeating the step S3 to obtain the patterned multilayer structure.

The invention belongs to the technical field of protein structure prediction, and relates to a protein structure prediction method, system and device based on a light quantum computer, and the method comprises the steps: 1) obtaining a multi-sequence alignment MSA matrix of a target sequence based on the target sequence alignment of a to-be-predicted protein; 2) encoding the obtained multi-sequence alignment MSA matrix into a {0, 1} matrix; 3) converting the amino acid interaction of the protein into an undirected graph model of {0, 1} state nodes, and training by adopting a Boltzmann machine training mechanism and using a light quantum computer to obtain a weight coefficient of a connecting edge between the nodes in the undirected graph model; and 4) obtaining an interaction coefficient between different amino acids of the protein based on the weight coefficient. According to the method, the calculation efficiency and the solving result of protein structure prediction are improved, and the problems that complex scheduling problems are difficult to calculate and accurate solutions cannot be obtained in the prior art are solved.

The invention relates to a purification method of high-purity boron trifluoride 11, which comprises the following steps: S1, carrying out nitrogen purging and replacement on a purification device of boron trifluoride 11, and keeping the moisture content to be less than 1ppm; s2, the boron trifluoride 11 raw material is subjected to adsorption impurity removal, part of HF impurities are removed, and mixed gas is obtained; s3, rectifying the mixed gas obtained in the step S2 to remove light components, so as to obtain a mixed solution; s4, rectifying the mixed solution obtained in S3 again to remove heavy components, so as to obtain high-purity boron trifluoride 11; and S5, collecting the high-purity boron trifluoride 11 into a cold trap, and filling the cold trap with the high-purity boron trifluoride 11. According to the technical scheme provided by the invention, the purchased product is introduced into the rectifying tower to remove light components and heavy components so as to obtain a high-purity product, and light components and heavy component impurities such as H2, O2, Ar, N2, CO2, SO2, HF and SiF4 in boron trifluoride 11 are effectively removed through accurate control of the rectifying process, so that a high-purity 5N-grade boron trifluoride 11 product can be obtained, and the requirement of high-end application is met.

The invention discloses a preparation method of a continuous graphene nanofiber bundle, and relates to the technical field of graphene fiber materials. The preparation method comprises the following steps: preparing and preparing a graphene oxide nanobelt solution, and adding a plasticizer to obtain a spinning solution; injecting the spinning solution into an electrostatic spinning device, performing near-field electrostatic spinning and air curing, and performing curing forming in a coagulating bath to obtain basic graphene oxide fibers; a plurality of fibers are assembled into nanofiber multifilaments in a coagulating bath, and then the nanofiber multifilaments enter a subsequent multi-stage combined drafting process to prepare a GO fiber aggregate; the GO fiber aggregate is immersed in a Lys-Dopa solution for a reaction, and finally the GO fiber aggregate is collected through a twisting process; reducing the collected GO fibers with hydroiodic acid to obtain reduced graphene fibers, and then performing high-temperature graphitization treatment to obtain a graphene nanofiber bundle product; the graphene fiber preparation process is improved from multiple aspects of raw material preparation, spinning and drafting, Lys-Dopa bath, twisting and the like, a new mechanical property improvement scheme is provided, and development of the graphene fiber field in the future is promoted.

The invention discloses a preparation method of a Pt / TiO2 catalyst and its application in NH3-SCO reaction. The preparation method comprises the following steps: providing nano titanium dioxide; mixing a platinum source, water and alcohol to prepare a platinum source solution; placing the nano titanium dioxide in the platinum source solution, turning on ultraviolet light for photodeposition reaction, and then filtering and drying the precipitate to obtain a Pt / TiO2 catalyst. The method can prepare a Pt / TiO2 catalyst with low noble metal loading, high and low temperature activity and high N2 selectivity.

The invention discloses a water-soluble phosphonated polybenzimidazole polymer and a preparation method thereof, and particularly, under the protection of nitrogen flow, 3, 3 '-diaminobenzidine and diphosphonic acid substituted aromatic dicarboxylic acid react for 6-30 hours at 180-250 DEG C by taking polyphosphoric acid as a medium, and the phosphonated polybenzimidazole polymer is obtained through polycondensation. The phosphonated polybenzimidazole polymer disclosed by the invention has good solubility in water under an alkaline condition, can be used as a solvent in subsequent processing, has the characteristics of no pollution and environmental protection, is easy to recover and has a wide application prospect.

The invention relates to a preparation method of a spiral dislocation stacked imine covalent organic framework material. The preparation method comprises the steps of preparing an imine covalent oligomer and preparing the spiral dislocation stacked imine covalent organic framework material. The invention also provides the spiral dislocation accumulation imine covalent organic framework material obtained by the preparation method and application of the spiral dislocation accumulation imine covalent organic framework material in light absorption semiconductor materials. The preparation method provided by the invention is simple, convenient, universal and easy to implement, and the imine covalent organic framework material with the spiral dislocation stacking structure is obtained, is clear in material structure and good in crystallinity, is a novel topological structure, and has a good potential application prospect in the photoelectric field.

The invention discloses an image processing method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining a to-be-processed image which comprises a to-be-recognized first card; identifying an image area where each first card is located in the to-be-processed image; based on the image area, extracting a first card image corresponding to each first card from the to-be-processed image; performing image identification processing on the first card image of each first card to obtain an identification result corresponding to each first card; based on the identification result of each first card, card information of each first card is determined; and displaying card information of each first card through a graphical user interface provided by the terminal equipment. According to the method and the device, the step of acquiring the card information corresponding to the entity card is simplified, the acquisition time of the card information is saved, the real-time performance and the responsiveness of information acquisition are improved, and the card information acquisition efficiency is improved.

The invention relates to the technical field of adhesives, and particularly discloses an electrogenerated viscosity-reducing adhesive as well as a preparation method and application thereof. The electrogenerated viscosity-reducing glue is prepared from the following raw materials in parts by weight: 100 to 150 parts of polyacrylate, 30 to 50 parts of polyvinyl alcohol, 20 to 40 parts of functional monomer, 1 to 5 parts of conductive agent, 2 to 6 parts of alkenyl-containing ionic liquid, 1 to 5 parts of lithium salt, 1 to 5 parts of tackifier, 1 to 2 parts of dispersant, 0.1 to 2 parts of initiator and 60 to 100 parts of organic solvent, and the conductive agent is obtained by synergistically modifying hydroxylated carbon nanotubes with 2-thiophenecarboxylic acid and 2-picolinic acid. The electrogenerated viscosity-reducing adhesive is applied to the electrogenerated viscosity-reducing adhesive tape, and the obtained adhesive tape is excellent in peel strength and shear strength, high in power-on viscosity-reducing efficiency, free of adhesive residue during peeling, reusable and wide in application prospect.

The invention discloses an ultrahigh-voltage submarine cable flexible joint insulation recovery method, which comprises the following steps: S1, placement: placing a cable to be processed in a working environment; s2, checking to ensure that the surface of the to-be-processed cable is smooth and clean; s3, mold filling: putting the cable to be processed into an injection mold, installing a cold contraction pipe, and adjusting the position; s4, the cable to be processed in the mold is heated and kept; s5, starting an external plastic extruding machine; s6, the pressure of the mold is kept, discharging is stopped, and the extruder is removed; s7, the injection mold is heated and kept, and cooling is conducted in stages; s8, the injection mold and the cooling pipe are dismantled; according to the recovery method, the steps are simple, only one-time mold installation and extrusion process is needed, the workpiece does not need to be vulcanized after heating is stopped and cooling is completed, and the recovery method can effectively save the preparation process, shorten the process time, improve the production efficiency and be beneficial to guaranteeing the on-time delivery rate of a factory.

The invention belongs to the technical field of flame-retardant materials, and particularly relates to a halogen-free flame retardant containing a Schiff base structure, a preparation method of the halogen-free flame retardant and application of the halogen-free flame retardant in epoxy resin. An intermediate is prepared through nucleophilic substitution reaction between an aldehyde group-containing phenolic compound and an acyl chloride compound, and a halogen-free flame retardant containing phosphorus and nitrogen elements and a Schiff base structure is obtained through Schiff base reaction between the intermediate and 1, 3-bis (3-aminopropyl)-1, 1, 3, 3-tetramethyldisiloxane. The flame retardant combines a Schiff base structure, phosphorus and silicon elements, and has the advantages of good thermal stability, significantly improved char yield, excellent flame retardant effect and significantly improved mechanical properties. The modified epoxy resin is further used for modifying the epoxy resin to prepare the flame-retardant epoxy resin; under the condition that the influence on the thermal performance of an epoxy resin cured product is small, the charring performance and the mechanical performance of the epoxy resin cured product can be remarkably improved, and the flame-retardant efficiency is excellent.

The invention relates to the field of array microphones, and discloses an array microphone assembly and an assembling method thereof.The assembly comprises a plurality of microphone bodies and further comprises a carrier plate and a supporting assembly used for supporting the carrier plate, and the carrier plate is provided with an adjusting assembly used for limiting the microphone bodies. Push rods are slidably mounted on the outer surfaces of the adjusting assemblies. When the push rod is pushed into the adjusting assembly, limiting between the adjusting assembly and the carrier plate can be relieved. According to the array microphone, through cooperation of the carrier plate, the adjusting assembly, the supporting assembly, the push rod and the like, corresponding adjustment of the height of the microphone bodies can be achieved, the distance between every two adjacent microphone bodies can be rapidly adjusted, and therefore the array microphone formed through combination can achieve a better sound emitting effect; the whole steps are concise, operation is convenient, the microphone can be effectively suitable for multiple scenes such as conferences and performances, the carrier plate and the microphone body can face downwards when the microphone is not used, and dust pollution on the microphone body can be effectively reduced.

The invention relates to the technical field of polyester fiber modification, and particularly discloses a large polyester bio-fiber containing a lavender active component and a preparation method of the large polyester bio-fiber containing the lavender active component. Comprising the following raw materials in parts by weight: 100-300 parts of polyester chips, 5-10 parts of lavender active ingredients, 10-20 parts of modified mica sheets, 10-20 parts of a coupling agent and 1-3 parts of a dispersing agent, besides, the lavender leaves are subjected to enzymolysis through the compound enzyme, then the deep-eutectic solvent is adopted for extraction, and the two steps are combined, so that active ingredients in the lavender leaves can be fully extracted. The polyester fiber provided by the invention has excellent aging resistance and antibacterial performance, and has a wide market prospect.

The invention relates to the technical field of phase change materials, and discloses a multifunctional composite phase change material and a preparation method and application thereof. The phase change energy storage microcapsule is prepared from the following raw materials: a core material, a Pickering emulsion template and a wall material, the wall material comprises resin and polypyrrole. The multifunctional composite phase change material is prepared from the phase change energy storage microcapsule, a reinforcing material and a polymer elastomer. The phase change energy storage microcapsule provided by the invention is uniform in size, regular in shape, good in stability and good in coating effect, the surface is doubly coated with the resin and the polypyrrole nanoparticles, the phase change material leakage condition is avoided, and the thermal cycling stability is good; the multifunctional composite phase change material has good photo-thermal conversion capability and conductivity and good thermal cycling stability, can meet the multi-scene application requirements in the fields of intelligent wearing, solar energy conversion and human body near-infrared photo-thermal treatment, and is non-powdery and can be directly used.

The invention relates to the technical field of surface engineering, in particular to a method for depositing a W / WCx coating on the surface of stainless steel and a stainless steel product prepared through the method. The method comprises the following steps: S1, depositing a metal transition layer on the surface of a stainless steel substrate; s2, performing diffusion heat treatment on the stainless steel substrate deposited with the metal transition layer in inert gas at 550-800 DEG C; s3, a pure tungsten layer is deposited on the surface of the metal transition layer obtained after diffusion heat treatment; and S4, depositing a W / WCx composite coating on the surface of the pure tungsten layer. The metal composite coating is deposited after the plating layer is subjected to diffusion heat treatment, the surface hardness of the stainless steel can be remarkably improved, and the hardness value of the stainless steel can be four times or above that of traditional stainless steel; the binding force of the metal transition layer and the stainless steel substrate is larger than 120 MPa, the tungsten-containing coating can be effectively prevented from cracking, and the risk of coating stripping is avoided.

The invention discloses a monatomic catalyst for activating peroxymonosulfate as well as a preparation method and application of the monatomic catalyst. The catalyst comprises a nitrogen and sulfur co-doped Ti3C2Tx nanosheet and an iron monatomic or cobalt monatomic targeted on the nanosheet in an asymmetric coordination structure. The preparation method comprises the following steps: mixing the Ti3C2Tx nanosheet, a precursor containing a nitrogen source and a sulfur source, and soluble metal salt, self-assembling, freeze-drying and pyrolyzing. The monatomic catalyst provided by the invention has excellent conductivity and electronic structure, can form a large amount of reactive oxygen species in a catalytic degradation system on the premise of low addition amount of peroxymonosulfate, and has the advantages of high activation efficiency on peroxymonosulfate, capability of effectively reducing the usage amount of peroxymonosulfate and the like; the peroxymonosulfate can be activated to achieve efficient purification of organic wastewater, the operation cost of the peroxymonosulfate activation technology can be effectively reduced, and meanwhile, the new environmental pollution risk caused by the fact that a large amount of peroxymonosulfate is used can be remarkably reduced.

The invention discloses an application of oxygen glycosyl transferase coded by a peucedanum praeruptorum PpUGT5 gene in biosynthesis of scopolin, and belongs to the technical field of biology. The nucleotide sequence of the PpUGT5 gene encodes a nucleotide sequence of an amino acid sequence as shown in SEQ ID NO. 2. The scopolamine is obtained by a biosynthesis method for carrying out enzyme catalysis by utilizing the PpUGT5 protein in vitro, and a new method is provided for synthesizing the scopolamine.

The present invention discloses a turnover box palletizer, including a frame, a conveying mechanism, a pair of clamping mechanisms and a pair of openable guardrail mechanisms are arranged on the frame, the conveying mechanism includes two conveying tracks, a lifting mechanism is arranged between the two rows of conveying tracks, a pair of clamping mechanisms are arranged above the two rows of conveying tracks, and a pair of guardrail mechanisms are arranged at the discharge ends of the two rows of conveying tracks. The palletizing method includes the following steps: S1, the two rows of conveying tracks convey the turnover box to the top of the lifting mechanism; S2, the lifting mechanism drives the turnover box to rise by one box position, the clamping mechanism clamps the current bottom layer of the turnover box, and then the lifting mechanism resets; S3, repeating steps S1 and S2 until the palletizing of the target number of turnover boxes is completed; S4, the lifting mechanism rises to undertake the stacking material, the clamping mechanism releases the stacking material, the lifting mechanism descends to drive the stacking material to fall onto the conveying track, the guardrail mechanism opens, and the conveying track outputs the stacking material. The present invention has the advantages of simple structure, reliability, low cost, high efficiency, etc.

The invention relates to a biosynthesis method of cosmetic tripeptide GHK (glycine-histidine-lysine), which is characterized in that a GHK oligopeptide is prepared by carrying out microbial fermentation synthesis and trypsin specific hydrolysis on artificially designed GHK multiple artificial sequences. And on the basis of the original sequence, the GHK yield is improved by adding a specific interval sequence. Compared with a traditional chemical synthesis method, the GHK oligopeptide biosynthesis method has the advantages that raw materials are cheap and simple, steps are easy to implement, and the GHK oligopeptide biosynthesis method is environmentally friendly and beneficial to improving the application level of GHK tripeptide in the field of beauty makeup.