241results about How to "Simple steps" patented technology

The invention discloses an anion exchange membrane electrode and a preparation method and application thereof, and belongs to the technical field of new energy material and catalytic electrode preparation, the method comprises the following steps: S1, preparing an anode catalyst slurry comprising a hydrophobic covalent organic framework material, an anode catalyst, an anion exchange ionomer and a solvent; s2, preparing a cathode catalyst slurry of which the components comprise a cathode catalyst, an anion exchange ionomer and a solvent; and S3, respectively spraying or coating the anode catalyst slurry and the cathode catalyst slurry on two side surfaces of an anion exchange membrane or a gas diffusion layer, and carrying out heat treatment to obtain the anion exchange membrane electrode. The method provided by the invention can solve the problems of large gas-liquid-ion three-phase mass transfer resistance, easy shielding of active catalytic sites by ionomers and unbalanced water management in the membrane electrode assembly in the existing AEMWE device.

The invention belongs to the technical field of synthesis of 2, 3-dipicolinic acid, and relates to a catalyst for synthesizing 2, 3-dipicolinic acid as well as a preparation method and application thereof, the catalyst is prepared from a carrier, and active components and auxiliaries loaded on the carrier; the carrier is boron nitride modified aluminum oxide, the active component is palladium-cobalt bimetal, and the auxiliary agent is magnesium; the catalyst comprises the following components in percentage by mass: 0.2 wt%-3wt% of palladium, 0.5 wt%-4wt% of cobalt, 0.05 wt%-0.3 wt% of magnesium, 5wt%-15wt% of boron nitride and the balance of an aluminum oxide carrier. The catalyst is prepared by adopting an ultrasonic-assisted sol-gel method, so that high dispersion and strong interaction of active components are realized. The catalyst shows high catalytic activity, high selectivity and excellent stability in a dichloropyridine carbonylation reaction, carbon monoxide is used as a carbonyl source, the atom economy is high, and the green chemical requirement is met.

The present application relates to the technical field of soil remediation, and discloses a composite microbial inoculum for activating reverse conversion of oxidized iron in dry land soil and application thereof.The composite microbial inoculum comprises aerobic iron-reducing bacteria and phenazine electron shuttles.The present application mediates the aerobic iron-reducing process of the aerobic iron-reducing bacteria strain through the phenazine electron shuttles, significantly improves the electron transfer efficiency, enhances the iron-reducing capacity, and can efficiently generate high-activity weak-crystalline iron oxide under aerobic conditions, thereby breaking through the limitation of traditional iron reduction relying on anaerobic environment;by promoting the reverse conversion of high-crystalline oxidized iron to weak-crystalline oxidized iron, the mineral interface activity is improved, the fixation capacity for Cd, Pb, As and other multi-metals in dry land soil is significantly enhanced, the biological availability thereof is reduced, the biological toxicity and migration risk thereof are greatly weakened, the remediation process is stable, the risk of secondary pollution is low, and the present application has good application prospect and popularization value in the field of heavy metal contaminated soil remediation.

The application discloses a method for synthesizing tervalent tetraaryl iron porphyrin from pyrrole, aromatic aldehyde and ferrous salt, which comprises the following steps: adding anhydrous aluminum chloride, aromatic aldehyde, pyrrole and ferrous salt into DMF under stirring, and then heating and refluxing the reaction mixture for 0.5 hours under nitrogen; removing the nitrogen and continuing to heat the reaction mixture for a certain time; stopping the reaction; cooling the reaction mixture; and placing the reaction mixture at 273K overnight; and finally filtering the reaction mixture to obtain the iron porphyrin.

The utility model discloses a single battery, a battery pack and electric equipment, and belongs to the technical field of power batteries, the single battery comprises a shell, an electrode assembly, an insulating film, a side plate and a cover plate assembly, and the shell is provided with an accommodating cavity; the electrode assembly is arranged in the accommodating cavity and has a first direction; the insulating film sleeves the periphery of the electrode assembly by one circle and is partially overlapped and connected, and the insulating film is positioned between the electrode assembly and the shell; the side plate is arranged at the overlapped and connected part of the insulating film along the first direction, and the side plate and the insulating film are integrally formed; the cover plate assemblies are arranged at the two ends of the shell, cover the containing cavity and are connected with the shell. The side plate and the insulating film are integrally formed, so that the step of assembling the side plate and the insulating film is reduced. Through partial overlapping of the insulating film, after the periphery of the electrode assembly is coated with the insulating film, an adhesive tape does not need to be used for fixing, and the step of coating the insulating film is further reduced.

The application discloses a fabric yellowing reagent and a fabric yellowing method, and relates to the technical field of daily chemical products. 5 The fabric yellowing reagent comprises 1-3% of histidine solution and a bacterial suspension with a bacterial concentration of 1*10 5 CFU / mL-9*10 The bacteria are a mixture of one or more of Staphylococcus epidermidis and Micrococcus luteus; the solvent of the histidine solution is normal saline containing 0.15-1% of trypsin peptone; and the solvent of the bacterial suspension is normal saline containing 0.1-0.2% of trypsin soybean peptone liquid culture medium. The fabric yellowing reagent can be used for simulating fabric yellowing, and has good operability, reproducibility and data reliability.

The present application belongs to the technical field of disposable plugging stopper, and specifically provides a combined pin plugging stopper and a slurry sealing and blocking method. The combined pin plugging stopper comprises a stopper pipe, a first pin, a sliding structure, a deformation piece, an inner support, a steel ball, a second pin, a connector, a slurry overflow port and a slurry outlet pipe. The stopper pipe is fixedly connected with a grouting pipe through the first pin. The other end of the stopper pipe is arranged along the central axis of the grouting pipe and is connected with the slurry outlet pipe. The steel ball is arranged inside the side of the stopper pipe close to the slurry outlet pipe. The second pin is arranged between the steel ball and the slurry outlet pipe. The sliding structure is sleeved on the stopper pipe and is provided with a plurality of deformation pieces. The end of the sliding structure close to the slurry outlet pipe is connected with the slurry overflow port arranged on the slurry outlet pipe through the connector. The inner support is arranged on the stopper pipe and between the adjacent two deformation pieces. The present application can solve the problem of sealing failure or difficult recovery in the high-pressure grouting process caused by the structural and technological defects of the existing plugging stopper.

The application discloses a comb-shaped long-chain alkyl copolymer asphalt inhibitor and a preparation method and application thereof. First, octadecyl methacrylate, maleic anhydride and styrene are used for copolymerization, and then an amide reaction of the copolymer and tetradecylamine or octadecylamine is carried out to obtain the comb-shaped long-chain alkyl copolymer asphalt inhibitor. The inhibitor has an inhibition rate of greater than 95%, raw materials are easy to obtain, reaction conditions are mild, and the inhibitor is suitable for large-scale production. The preparation method only needs two-step conventional reactions, and high pressure and special purification equipment are not needed.

A kind of zirconium alloy water environment corrosion microscopic mechanism analysis method based on ab initio molecular dynamics, 1, construct the multi-phase interface model of metal substrate model and corrosion medium layer model combination, obtain the size information of simulation box;2, set simulation parameters for multi-phase interface model;3, carry out geometry structure optimization to multi-phase interface model and eliminate local internal stress, then carry out ab initio molecular dynamics simulation, obtain atomic evolution track and corrosion product structure;4, carry out data post-processing and statistical analysis to ab initio molecular dynamics simulation result, obtain corrosion elementary reaction path and calculate reaction energy barrier, the interaction mechanism of corrosion group and surface is analyzed by DFT method.The method can complete accurate zirconium alloy corrosion process dynamic simulation under periodic boundary condition, has higher calculation precision and is more reasonable to the description of interatomic force in system, and can also analyze the interaction mechanism between alloy and corrosion medium from atomic electronic scale.

The application discloses an antenna combiner, comprising: a plurality of high-frequency resonators, the plurality of high-frequency resonators are arranged side by side along a first direction, each resonator extends along a second direction, and comprises a high-resistance wire and a low-resistance wire distributed along the second direction, wherein the high-resistance wire of two high-frequency resonators has a mounting hole; a flying rod assembly, comprising a capacitive flying rod and a heat shrink sleeve, the capacitive flying rod has two flying rod pins, the two flying rod pins of the capacitive flying rod are sleeved with the heat shrink sleeves respectively, and the two flying rod pins of the flying rod assembly are respectively inserted into the mounting holes on the two high-resistance wires; a flying rod support, the flying rod support is fixed on the high-resistance wire between the two high-resistance wires with the mounting holes, and the capacitive flying rod is supported on the flying rod support. The application adopts the mode of the heat shrink sleeve and the flying rod support to replace the mode of the originally adopted supporting gasket and flying rod sheet, improves the overall stability of the antenna combiner, and greatly simplifies the installation steps and processing difficulty.

The application discloses a kind of cyanobacterial polysaccharide and PVA composite material preparation method, comprising the following steps: S1: PVA and cyanobacterial polysaccharide are dissolved in deionized water to obtain premixed solution;S2: crosslinking agent ethylene glycol diglycidyl ether is added to the premixed solution prepared in step S1 and heated to react, to obtain mixed solution;S3: tannic acid is added dropwise to the mixed solution prepared in step S2 to obtain film forming liquid, and the film forming liquid is laid flat and dried to obtain a cyanobacterial polysaccharide and PVA composite film.The application forms a crosslinked network structure by PVA, cyanobacterial polysaccharide and ethylene glycol diglycidyl ether through ring-opening reaction, while meeting biocompatibility and mechanical properties, it can greatly improve the barrier property of the material, and can be used as functional packaging film, fresh-keeping adsorption gasket, etc. for fresh fruits and vegetables, livestock and poultry meat food storage and transportation.

The invention relates to the technical field of chemical material preparation, and particularly discloses a safe preparation method of a short fluorocarbon alkyl sulphobetaine surfactant, a product and application, and the safe preparation method comprises the following steps: (1) in a solvent system I, reacting epoxy chloropropane with secondary amine to obtain an intermediate 1; (2) in a solvent system II, reacting the intermediate 1 with sodium hydrosulfide or a hydrate thereof to obtain an intermediate 2; (3) reacting the intermediate 2 with short fluorocarbon alkyl iodide to obtain perfluoroalkyl thioether propyl tertiary amine; and (4) carrying out sulfonation treatment on perfluoroalkyl thioether propyl tertiary amine to obtain the short-fluorocarbon alkyl sulphobetaine surfactant. According to the invention, by designing a synthetic route without using a high-risk reagent, the safety and operability of the process are remarkably improved, and the sulphobetaine surfactant with excellent acid, alkali and salt chemical stability and excellent surface activity is successfully prepared; and a key material and a safe and reliable preparation process are provided for development of a new-generation efficient environment-friendly fire extinguishing agent.

This utility model relates to the field of scanning equipment technology, and in particular to a quick-change battery compartment structure. The technical solution includes a scanner body and a locking block connected to the bottom of the scanner body. A battery slot is provided at one end of the scanner body near the locking block, and a battery is installed inside the battery slot. It also includes a slot at the end of the scanner body near the locking block, and a locking groove is provided inside the slot. This utility model utilizes the cooperation of a positioning pin, a locking head, a button, and a spring. When installing the battery, the battery is placed in the battery slot of the scanner body, the positioning pin of the locking block is inserted into the positioning groove, and pressing causes the locking head to engage with the slot, thus securing the battery. When replacing the battery, the button is pressed against a hard object to disengage the locking head from the slot, and then both hands can be used to separate the scanner body and the locking block, allowing the old battery to be removed or placed in. No special tools are required during the process, making the operation simple and quick, greatly simplifying the steps and reducing the skill requirement.

This invention provides a layout self-checking method, including acquiring all or part of the routing path information to be self-checked in the layout, and preset layout coloring layer rules; using the preset layout coloring layer rules, performing self-checks on the coloring layer information of the routing paths to be self-checked, including: traversing and checking whether the coloring layer of each connection block in the routing path to be self-checked is correct, and obtaining the self-check result. The self-checking method of this invention can quickly verify the layout coloring layer after automatic routing, enabling early detection of problems; and for various connection situations of metal layer paths, it can automatically and quickly verify the correctness of the coloring layer covering the metal layer, which is beneficial for improving chip design efficiency and further optimizing the process. This invention also provides a storage device with corresponding advantages.

This invention discloses a method for measuring the bonding strength of a casting repair process, solving the problem in the prior art where the bonding strength of the casting repair process cannot be quantitatively obtained. It has the beneficial effect of accurately obtaining the bonding strength between the casting substrate and the repair layer, achieving quantitative strength measurement. The specific solution is as follows: A method for measuring the bonding strength of a casting repair process includes: preparing a specimen; cutting a groove in the specimen; cutting the specimen at the groove to obtain the substrate; repairing the cut specimen, with the repair layer covering the groove; breaking the repaired specimen and recording the maximum tensile force; and calculating the bonding strength between the substrate and the repair layer based on the maximum tensile force.

The application discloses a preparation method of zolmitriptan, relates to the technical field of drug synthesis, and comprises the following steps: adding compound 1 and reagent 1 into solvent 1 to perform a first reaction to obtain compound 2; adding the compound 2, reagent 2 and reagent 3 into solvent 2 to perform a second reaction to obtain compound 3 and the like. Compared with the prior art, the application provides a novel synthetic route for preparing zolmitriptan, the route uses L-4-bromophenylalanine as a starting material, and new synthetic steps are adopted, such as using reagent 5, such as a t-butyl alcohol metal salt and sodium hydride, to construct the oxazolidinone structure in zolmitriptan and using a coupling reaction to construct the indole ring in zolmitriptan, so that the yield of the obtained target product is significantly improved, the use of high-toxicity and high-risk reagents in the existing synthetic route is effectively avoided, and a mild, efficient, green and environmentally-friendly synthetic route for preparing zolmitriptan is provided.

The utility model discloses an amination neutralization reaction waste gas filter device, including filter shell, the upside wall of filter shell is equipped with the inlet pipeline, and the back wall of filter shell is equipped with the discharge pipeline, and the inlet pipeline is connected in series with the discharge pipeline through the back type pipeline, and the upper end of back type pipeline is equipped with the conversion subassembly, still including replacement subassembly, replacement subassembly: it includes rotating stand, filter screen mounting bracket, plunger, installation shaft, adjusting frame and dial slot, rotating stand sets up respectively in the inside of filter shell and cooperatively set up with the filter screen mounting groove of the middle part of back type pipeline, this amination neutralization reaction waste gas filter device, and the filter screen replacement does not need complicated tool, can make filter screen mounting bracket separate from installation groove only through the screwing of the top tight screw, rotating adjusting frame, and cooperation rotating stand rotation can complete old filter screen disassembly and new filter screen installation quickly, and the operation step is simple and convenient, and the replacement difficulty is reduced greatly.

The application discloses a kind of asphalt concrete panel temperature dissipation rate testing device and method under big wind environment, device includes simulation test device and in-situ testing device;Method includes the following steps: one, pours asphalt concrete test block;Two, adjust temperature compensator;Three, set up big wind environment;Four, acquisition asphalt concrete test block during the formation process multiple sets of key parameters;Five, change big wind environment and obtain multiple sets of key parameters;Six, obtain multiple sets of key parameters in the formation process of asphalt concrete test block under a variety of different big wind environment;Seven, fitting temperature dissipation rate calculation model of the asphalt concrete type required in construction site;Eight, cast in place asphalt concrete panel and pre-embed multiple third temperature sensors located at different heights;Nine, using in-situ testing device to test asphalt concrete panel temperature dissipation rate under the big wind environment of field. Obtain temperature dissipation rate by fitting temperature dissipation rate calculation model, provide technical support for asphalt concrete temperature control and crack prevention.

The application provides a deep trench field effect transistor and a preparation method thereof, which comprises the following steps: forming a P-type layer and an N-type layer in an N-type substrate; forming a gate trench and a terminal trench; forming an N-type source region by ion implantation; forming a gate oxide layer in the trench; forming a first polysilicon layer, a thick oxide layer and a second polysilicon layer in the trench; depositing a dielectric layer; forming a drain contact region, a source contact region, a gate contact region and a terminal contact region; forming a source electrode, a gate electrode and a drain electrode, wherein the source electrode is connected with the N-type source region and the terminal contact region simultaneously. The source electrode, the gate electrode and the drain electrode can be attached to a heat dissipation substrate simultaneously, the heat dissipation path is greatly optimized, and the source path inductance is reduced; the source contact region of the application is arranged in the terminal region, and the source contact region is realized by directly etching the dielectric layer and the substrate below the dielectric layer, the process controllability is high, the steps are simple, and the etching process of the source contact region has high stability.

The application relates to a recycling method of an ink cartridge with a control assembly and a recycled ink cartridge. The ink cartridge comprises a cartridge body with an ink storage cavity and an ink outlet communicating with the ink storage cavity. The cartridge body is provided with a ventilation hole communicating between the ink storage cavity and the external environment. The cartridge body is further provided with a control assembly for opening or closing the ventilation hole. The recycling method comprises the following steps: injecting cleaning liquid into the ink storage cavity through the ink outlet; discharging the cleaning liquid in the ink storage cavity through the ink outlet, wherein the ventilation hole is in an open state; and injecting ink into the ink storage cavity through the ink outlet. The recycling method can inject the cleaning liquid into the ink storage cavity, discharge the cleaning liquid and inject the ink through the original ink outlet of the ink cartridge, so that an additional hole and a corresponding sealing structure are not needed on the cartridge body, the structure of the ink cartridge is simple, the production difficulty of the ink cartridge is reduced, and the production cost of the ink cartridge is reduced. Meanwhile, the recycling method is simple and easy to implement.

This invention discloses a nitrogen-driven pneumatic directional drilling equipment for downhole cuttings removal in soft coal seams, comprising a nitrogen drive mechanism and a directional drilling rig. The directional drilling rig has a directional drill string assembly structure, which includes a drill rod. A probe outer tube is coaxially sleeved inside the drill rod, and a measuring probe is coaxially sleeved inside the probe outer tube. The measuring probe is used to measure the gas flow rate and pressure in the borehole. An annular downward air chamber for nitrogen gas flow is formed between the inner wall of the probe outer tube and the outer wall of the measuring probe. An air inlet is opened on the outer wall of the drill rod at the lower part, and an annular upward air chamber for nitrogen gas flow is formed between the inner wall of the drill rod above the air inlet and the outer wall of the probe outer tube. A trumpet-shaped wind shield, wider at the bottom and narrower at the top, is connected to the outer wall of the drill rod above the air inlet. This invention also discloses a corresponding borehole cuttings removal method. This invention significantly reduces the resistance to airflow, achieving faster drilling speeds and removing more cuttings under the same air volume and pressure.

The application relates to the technical field of high polymer materials, and discloses a nylon material and a preparation method and application thereof. The nylon material comprises the following preparation raw materials in percentage by mass: 70-85% of nylon resin, 8-15% of nitrogen-based flame retardant, 2-8% of phosphorus-based flame retardant and 1-8% of synergistic flame retardant. The nylon material provided by the application adds the phosphorus-based flame retardant and the synergistic flame retardant in a traditional nitrogen-based flame retardant system, so that the ignition temperature of the material is increased, the dropping speed and the dropping ignition probability are reduced, and the flame retardant performance of the material is improved. The ignition temperature of the material can reach 745 DEG C, the DSC crystallization temperature can reach 187 DEG C, the demolding effect is good, the dropping speed is slow, the dropping ignition probability is low, the performance requirements of a battery assembly product on the material can be met, and the nylon material can be used in the preparation of electronic connectors, battery compartments, low-voltage switches, housings or terminal blocks of power distribution systems of electronic and electrical equipment.

The application discloses a rectangular frame column settlement observation point pre-burying device and a pre-burying construction method. The device comprises a first L-shaped plate, a second L-shaped plate and a gear mechanism. The gear mechanism comprises a hollow rectangular base plate, a gear and a positioning ring. A settlement observation rod is arranged in the positioning ring, the gear and the hollow rectangular base plate. Upper bolts and lower bolts are arranged on the positioning ring. The method comprises the following steps: 1, rectangular frame column steel bar binding and formwork erection; 2, adjustment of the rectangular frame column settlement observation point pre-burying device; 3, installation of the rectangular frame column settlement observation point pre-burying device; 4, installation of the settlement observation rod; 5, concrete pouring and settlement observation rod pre-burying; and 6, removal of the rectangular frame column settlement observation point pre-burying device. After the rectangular frame column formwork is installed, the settlement observation point pre-burying device is used to pre-bury and fix the settlement observation point.

The present application relates to a liquid crystal elastomer microstructure preparation method based on photopolymerization phase separation, the method comprising S1, for a first liquid crystal cell with a specified thickness, filling a mixture of photopolymer monomers and liquid crystals between the first substrate and the second substrate of the first liquid crystal cell, the first substrate being a substrate without an alignment layer, and the second substrate being coated with an alignment layer; S2, covering a gray-tone mask on the first surface of the first substrate of the first liquid crystal cell; the first surface of the first substrate being the surface away from the mixture; S3, performing ultraviolet exposure on the gray-tone mask to separate the photopolymer monomers and the liquid crystals, and obtaining a composite structure; S4, based on a pre-configured liquid crystal elastomer prepolymer, processing the composite structure according to a preset liquid crystal elastomer microstructure preparation strategy, and obtaining a liquid crystal elastomer microstructure. The liquid crystal elastomer microstructure film prepared by the method has a thickness ranging from several microns to tens of microns, good alignment, and simple manufacturing process, low cost and high precision.

The invention relates to the technical field of lifting appliance lock head replacement, in particular to a lifting appliance lock head replacement tool and a using method thereof.The lifting appliance lock head replacement tool comprises a lifting part used for lifting a lifting appliance lock head, and the lifting part is connected with a lifting base through a connecting rod; the lifting seat is mounted on the supporting rod; the upper end of the supporting rod is provided with a connecting assembly for connecting a hanger; a limiting base is further arranged on the supporting rod and arranged below the lifting base. The lock head can be replaced only by one person, so that the labor intensity of maintenance personnel is greatly reduced, the potential safety hazard caused by cooperation of two persons is eliminated, the replacement efficiency is effectively improved, the labor cost is saved, and the actual requirements of high-frequency maintenance scenes are met. The using method is clear and coherent in process, and the whole lock replacement process can be completed only by one person.

The application discloses an olmesartan medoxomil and amlodipine besylate pharmaceutical composition and a preparation method thereof, and belongs to the technical field of medicines. The olmesartan medoxomil and amlodipine besylate pharmaceutical composition takes olmesartan medoxomil and amlodipine besylate as active ingredients, and is prepared into antihypertensive tablets by being matched with a disintegrant, a filler and a lubricant; wherein the filler is a mixture of pre-gelatinized starch and a co-processed product of microcrystalline cellulose and colloidal silicon dioxide. The preparation method adopts a direct compression process, and sequentially comprises the steps of mixing, whole-granulating, twice mixing, lubricating, tabletting and stomach-soluble film coating, and is simple in process and suitable for industrialized scale-up production. The application effectively solves the problem of low dissolution rate of the existing olmesartan medoxomil and amlodipine besylate tablets, and the prepared tablets have the advantages of high dissolution rate, similar dissolution curve to commercial preparations, high bioavailability, stable quality and good clinical application value.

The application discloses a method and device for arrhythmia analysis based on heart beat classification, equipment and medium, wherein the method comprises: generating a morphology amplitude coding vector of a target heart beat segment as a target morphology amplitude coding vector, the target heart beat segment being any one of the heart beat segment time series set; performing inner product calculation on the target morphology amplitude coding vector and each heart beat template vector in a preset heart beat template vector set to obtain an inner product value set; determining a target heart beat type corresponding to the target heart beat segment according to the inner product value set; and performing arrhythmia analysis on each target heart beat type corresponding to the heart beat segment time series set to obtain an arrhythmia analysis result. The application avoids the technical problems that the traditional method may have a large amount of calculation, ignores the amplitude difference of the waveform and easily ignores the morphology difference of the waveform when the amplitude is low, has simple steps and small calculation amount, and is thus suitable for real-time monitoring scenes.

The present application belongs to the field of hydrogen production by ammonia decomposition catalysis, and relates to a Ru-based catalyst, a preparation method and application thereof in hydrogen production by ammonia decomposition, which is a Ru-based catalyst with TOF bimodal characteristics by regulating reduction conditions to realize Ru particle size regulation. The catalyst takes carbon powder as a carrier, takes ruthenium nitrosyl nitrate as a precursor, and the ruthenium loading is 2wt%-4wt%. The Ru / C catalyst with controllable particle size distribution is obtained by regulating reduction conditions such as reduction atmosphere and reduction temperature to regulate the particle size of ruthenium particles. The average particle size of Ru nanoparticles of the catalyst is controlled in the range of 2.18-3.90 nm, and the highest intrinsic activity is shown in the two particle size intervals of 2.25 nm and 3.70 nm, forming a TOF-particle size bimodal law. The catalyst of the present application can be used for hydrogen production by ammonia decomposition.

The present application provides a kind of stamping production line, including at least two stamping equipment, each corresponding stamping equipment is provided with a transfer device, each transfer device is adjacent to its own corresponding stamping equipment, characterized in that: the upper portion of each stamping equipment is connected together by rigid connection structure, and each stamping equipment is detachably connected with rigid connection structure, each transfer device is installed on the rigid connection structure.Compared with the prior art, the advantages of the present application are: 1, the stamping production line connects each stamping equipment together by rigid connection structure, to transfer the vibration generated by any stamping equipment to the remaining stamping equipment, so that the vibration between each stamping equipment is offset, and the precision of the transfer device can be ensured;2, each stamping equipment and rigid connection structure are detachably connected, and one or more stamping equipment can be arbitrarily disassembled for maintenance.

The application discloses a deepwater oilfield development yield prediction method, an electronic device, an apparatus and a storage medium, wherein the method comprises: predicting the natural yield of old wells, the yield increasing potential of old wells, the yield of new wells, planned yield loss and non-planned yield loss for each prediction year respectively; wherein predicting the non-planned yield loss comprises: determining the development stage to which a well area belongs, wherein for the well area in the aging stage, a historical curve graph of the non-planned loss rate and time relationship is determined first, the non-planned loss rate in the prediction year is calculated by fitting the relationship between the non-planned yield loss rate and the production time of the aging stage in the curve graph, the non-planned loss rate in the prediction year is corrected by using a correction factor to determine the final non-planned loss rate in the prediction year, so as to determine the non-planned yield loss in the prediction year; and the deepwater oilfield development yield is calculated according to the above prediction results.