828results about How to "Simple composition" patented technology

The invention belongs to the technical field of power station boiler waste heat recycling energy-saving equipment and relates to a plate-and-shell type coal economizer. The plate-and-shell type coal economizer comprises a corrugated plate heat exchange core body (1), a heat exchanger shell (2), a first and a second water inlet / outlet water tank (3, 3') and a first and a second exhaust gas inlet / outlet pipeline (4, 4'), wherein the corrugated plate heat exchange core body (1) is mounted in the heat exchanger shell (2), the first and second water inlet / outlet water tanks (3, 3') are respectively arranged at the upper and lower ends of the front side of the corrugated plate heat exchange core body (1), and the first and second exhaust gas inlet / outlet pipelines (4, 4') are respectively arranged at the upper and lower sides of the corrugated plate heat exchange core body (1). The plate-and-shell type coal economizer solves the problem that the length of a water passage needs to be increased to solve the problem of unapparent water heating due to the great difference between an exhaust gas density and a water density, and meanwhile, a corrugated passage at the exhaust gas side enables the exhaust gas flow turbulivity to be increased and the heat transfer efficiency to be improved; the blockage due to ash accumulation happens rarely, even if the ash is accumulated, the cleaning is easy to finish.

The invention discloses a well industrial and mining unmanned driving simulation test method based on cluster hardware-in-the-loop, and relates to the field of unmanned driving simulation, and the method comprises the steps: constructing a simulation environment of an operation map; building a cluster hardware-in-the-loop simulation system on the constructed operation map simulation environment, and simulating an ore drawing machine, a draw shaft, a transport vehicle and a carry-scraper on the simulation system; when a plurality of loading points or unloading points exist in the constructed operation map simulation environment, calculating an optimal loading point, an optimal unloading point and an optimal driving route of each transport vehicle to realize transport vehicle scheduling simulation; the cluster hardware-in-the-loop simulation system adopts a distributed calculation architecture to perform parallel simulation calculation on a plurality of ore drawing machines, draw shafts, carry-scrapers and transport vehicles. Aiming at the low simulation test efficiency of the underground unmanned vehicle in the prior art, the underground simulation test efficiency is improved.

The invention relates to the technical field of carbon monoxide oxidation catalysts, and discloses a sulfur-tolerant noble metal-based CO oxidation catalyst as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: dipping a carrier in an aqueous solution containing a noble metal precursor and an auxiliary agent precursor, and then drying and roasting to obtain a catalyst matrix; carrying out pre-reduction treatment on the catalyst matrix in a hydrogen-containing atmosphere to obtain a catalyst intermediate; carrying out induced activation on the catalyst intermediate in an atmosphere containing CO and H2S; wherein the carrier is at least one of titanium dioxide, cerium dioxide, aluminum oxide and zirconium dioxide, and the metal element in the auxiliary agent precursor is at least one of Fe, Co and Ni. The catalyst prepared by the method provided by the invention can realize the high-selectivity oxidation process of H2S species, inhibits the adsorption of S species and the formation process of sulfate, and realizes the high-conversion-rate oxidation reaction of carbon monoxide in the presence of H2S.

The invention provides a preparation method of modified nanocellulose, a biomass coating and a composite paper wood, the preparation method of modified nanocellulose comprises the following steps: a, oxalic acid is heated to a molten state, bleached wood pulp is added to the molten oxalic acid for a reaction, and nanocellulose is obtained; b, dispersing nanocellulose in water, and mixing with coniferyl alcohol solution, hydrogen peroxide solution and first enzyme solution for reaction to obtain DHP-nanocellulose; c, mixing the DHP-nanocellulose with coniferyl alcohol glucoside, a second enzyme solution and a hydrogen peroxide solution, and reacting to obtain the modified nanocellulose. According to the invention, a plant lignification process is simulated, so that crosslinking in lignin-glycan complex forms such as anisole bonds, ester bonds and the like and connection of covalent bonds such as Beta-aryl ether bonds among lignin are regenerated among separated fibers, and the modified nanofiber with high physical strength is obtained; and some environmental pollution problems caused by the use of raw materials and products in a traditional reinforcing method are solved.

The invention relates to the field of household appliance equipment, and discloses a lifting mechanism, a floor brush assembly, cleaning equipment and a control method. The lifting mechanism is simple in structure, easy to install and set, small in occupied setting space, beneficial to miniaturization design of the whole machine and optimization of the product appearance, good in connection reliability of all parts, not prone to damage and long in service life. The lifting mechanism comprises a pneumatic part, an air inlet assembly, an exhaust assembly and a reset assembly, the pneumatic part is arranged in a shell, and the pneumatic part is connected with a first scraping strip; the air inlet assembly is arranged in the shell, the air inlet assembly can controllably inflate the pneumatic part, and the pneumatic part drives the first scraping strip to descend relative to the shell after being inflated; the exhaust assembly is arranged in the shell and can controllably exhaust the pneumatic part; the reset assembly is arranged on the shell, and the reset assembly drives the first scraping strip to be lifted relative to the shell after the pneumatic part exhausts air.

The invention relates to a smeltery surrounding soil heavy metal monitoring distribution and health assessment method and system. The method comprises the following steps: acquiring heavy metal pollutant emission data, regional topographic data, meteorological data and population data; obtaining heavy metal settlement data according to the heavy metal pollutant emission data, the regional topographic data and the meteorological data; arranging soil monitoring points according to the heavy metal settlement data in combination with the regional topographic data and the meteorological data; and calculating the health risk according to the population data and the heavy metal settlement data. According to the invention, the problems of too many sample distribution and inaccurate distribution of heavy metal in the surrounding soil of the smeltery in the prior art are solved, the problem that the influence of the smeltery on the health of surrounding people is not fully considered is solved, the accuracy and efficiency of monitoring distribution are improved, and according to the monitored heavy metal settlement data, the real-time monitoring of heavy metal settlement is realized. And health assessment is carried out on surrounding residents, so that prevention of diseases and control of the environmental pollution degree are facilitated.

The invention discloses a wind power shafting supporting structure and a clearance match grinding method thereof, and relates to the technical field of wind turbine generator design, the supporting structure comprises a first bearing, a second bearing and a third bearing, the first bearing, the second bearing and the third bearing are all tapered roller bearings, outer rings of the first bearing, the second bearing and the third bearing are arranged in a bearing seat, and inner rings of the first bearing, the second bearing and the third bearing are arranged on a main shaft. A front inner spacer ring is arranged between inner rings of the first bearing and the second bearing, and a front outer spacer ring is arranged between outer rings of the first bearing and the second bearing. A rear inner spacer ring is arranged between the inner rings of the second bearing and the third bearing; a rear outer spacer ring is arranged between the outer rings of the first bearing and the second bearing. The clearance match grinding method comprises the following steps: 1, measuring the inner ring height, the outer ring height and the assembly height of each bearing; 2, measuring the height of the front outer spacer ring and the height of the rear outer spacer ring; and 3, calculating the height of the front inner spacer ring and the height of the rear inner spacer ring. The wind power main shaft structure can solve the technical problem that the main shaft bearing is prone to early failure due to the fact that the bearing is installed obliquely or clearance press-fit is not in place in an existing wind power main shaft structure.

The utility model discloses a folding mechanism of an electronic outside rear-view mirror, which comprises an upper shell and a lower shell which are assembled up and down, an accommodating space with an L-shaped structure is formed between the upper shell and the lower shell, a driving power is arranged in one side of the accommodating space, and a rotating shaft is arranged in the other side of the accommodating space; a worm is mounted at the driving power output end and is in power connection with a driven gear which is axially and vertically arranged, and the driven gear is arranged in the middle of the outer wall surface of the rotating shaft in a sleeving manner; the rotating shaft between the top surface of the driven gear and the inner top surface of the upper shell is sequentially sleeved with a top gasket, an elastic piece and a pressing ring from top to bottom, a clamping structure is arranged between the pressing ring and the rotating shaft in the circumferential direction, and another clamping structure is arranged between the pressing ring and the driven gear in the circumferential direction; driving power is directly connected with the driven gear through the worm, automatic folding or manual folding is switched through clamping between the pressing ring and the driven gear or not under the action of external force due to the arrangement of the elastic piece, the overall structure is compact, the size is small, assistance is achieved, and it is guaranteed that the thickness and the size of the outside rear-view mirror are reduced.

The invention discloses a bifidobacterium pseudocatenum freeze-drying protective additive and application, and the bifidobacterium pseudocatenum freeze-drying protective additive is prepared from the following raw materials in percentage by weight: 2%-10% of dried skim milk, 5%-20% of cane sugar, 1%-6% of fructo-oligosaccharide, 0.5%-3% of sodium glutamate, 0.5%-2% of sodium ascorbate, 3%-15% of betaine and the balance of distilled water. The freeze-drying protective agent is simple in component composition, the survival rate of the bifidobacterium pseudocatenum in the freeze-drying process can be increased by using the freeze-drying protective agent, the freeze-drying survival rate of the bifidobacterium pseudocatenum reaches 76.3% or above, the stability of the freeze-drying preparation is guaranteed, and meanwhile the obtained freeze-drying preparation has the advantages of being easy to operate and the like, and has good application prospects. The preparation method of the freeze-dried preparation is simple and feasible, mild in condition, good in reproducibility, strong in controllability, suitable for large-scale production, and more convenient for clinical use and storage.

The invention discloses a ternary sand-fixing water-retaining seepage-proofing fertility-increasing vegetation restoration and reconstruction method, and relates to the technical field of operation methods of sand ecological restoration, and the method comprises the following steps: S1, laying a layer of seepage-proofing material on the surface layer of a target planting area to reduce water seepage and enhance soil water-retaining capacity; s2, mixing a water-retaining agent with local sandy soil to form a water storage layer, and paving the water storage layer on the surface of the impermeable material to ensure that the plant root system can obtain water for a long time; s3, applying an organic fertility intensifier to the water storage layer to improve the organic matter content and nutrient supply capacity of the soil; s4, appropriate plants are selected for planting, after planting, the vegetation growth condition and the soil humidity are checked regularly, a water-retaining agent and an organic fertility increasing agent are supplemented in time according to needs, and it is ensured that the vegetation can grow healthily. The planting method provided by the invention has a remarkable yield increasing effect, the survival rate of plants can be effectively improved, and the effect of fixing sand for a long time is achieved.

The invention provides a nano foam scrubbing agent suitable for environments with various temperatures and mineralization degrees as well as a preparation method and application of the nano foam scrubbing agent. The nano foam scrubbing agent comprises an anionic surfactant, a nonionic surfactant, a zwitterionic surfactant, foam stabilizing particles and a solvent, the total mass concentration of the anionic surfactant, the nonionic surfactant and the zwitterionic surfactant in the nano foam scrubbing agent is 0.1-1.0 wt%, and the mass concentration of the foam stabilizing particles is 0.1-0.5 wt%; the mass ratio of the anionic surfactant to the nonionic surfactant to the zwitterionic surfactant is (10-30): (15-20): (15-25). The foam scrubbing agent disclosed by the invention has relatively good foaming, foam stabilizing and liquid carrying capacities at 35-95 DEG C in a mineralization degree range of 10000-50000 mg / L, has very good salt resistance and calcium and magnesium ion resistance, and can adapt to environments with various temperatures and different mineralization degrees.

The invention discloses a feldspar-quartz flotation combined collecting agent and an application method, and belongs to the technical field of quartz sand processing, the feldspar-quartz flotation combined collecting agent comprises the following components by weight: 1-2 parts of dodecyl trimethyl ammonium chloride, 1.5-3 parts of fatty acid salt, 1-2 parts of a nonionic surfactant, and 1 part of an inhibitor. The dodecyl trimethyl ammonium chloride has good flotation collecting performance, and active Al < 3 + > on the surface of the feldspar is chelated with linoleate ions and adsorbed on the surface of the feldspar. A sodium sulfate inhibitor in a flotation system reduces interfacial tension, the flotation rate of associated impurity minerals is increased, and feldspar and quartz are efficiently separated. The invention further provides the feldspar-quartz flotation combined collecting agent. The method is simple in technological condition, few in operation step, high in purification efficiency, high in safety and feasibility and capable of separating feldspar and quartz in a targeted mode.

The utility model provides a coiled tubing bottom packer and a coiled tubing dragging fracturing process pipe column with a bottom seal, the coiled tubing bottom packer comprises a core shaft, an anti-jacking anchoring mechanism, a rubber sleeve and a seat clamping tile, the left end of the core shaft is connected with an upper joint, and a packing sealing assembly is installed at the right end of the core shaft; the anti-jacking anchor fluke mechanism comprises an anchor fluke base and an anchor fluke, the anchor fluke is installed in the anchor fluke base, an inner hole is formed in the left end of the anchor fluke base in the axial direction, and the packing sealing mechanism can be fixed in the inner hole; the rubber sleeve is installed on the anchor fluke base, the rubber sleeve has a certain elastic deformation performance and can expand and contract, a cone is arranged on the right side of the rubber sleeve, and a seating slip is arranged on the right side of the cone. The coiled tubing dragging fracturing process pipe column with the bottom seal comprises the coiled tubing bottom packer. According to the coiled tubing bottom packer, coiled tubing bottom seal dragging fracturing construction can be continuously carried out under a high pump stopping pressure block.

The invention relates to the technical field of comprehensive utilization of solid wastes, and discloses a soil conditioner prepared from coal-based solid wastes and a preparation method thereof, the soil conditioner comprises the following raw materials by weight: 80-100 parts of coal-based solid wastes, 5-15 parts of an inorganic salt material, 100-150 parts of pure water, 1-10 parts of a microbial agent fertilizer and 20-50 parts of crop straw biochar. According to the scheme, the inorganic salt is added, so that multivalent cations such as calcium, iron and aluminum are loaded on the coal-based solid waste and can be replaced with exchangeable sodium ions on soil colloid, and the soil desalting efficiency is improved; the crop straw biochar can increase the content of nutrient elements such as carbon, nitrogen and phosphorus for soil; the porous structure of the modified coal-based solid waste can provide a proper place for growth and reproduction of microorganisms, and the soil microenvironment is improved; the soil conditioner is simple in raw material composition, the coal-based solid waste is used as the main raw material for improving the saline-alkali soil, the source is wide, the production cost is low, pollution to the environment is avoided, and large-area popularization and application in saline-alkali soil areas can be facilitated.

The present invention discloses a horizontal bag-feeding packaging machine, including a bag-taking device, a bag-sucking device, a loading device, a sealing device and a bag-feeding device throughout the entire packaging machine. The bag-taking device includes a bag-placing mechanism and a bag-grabbing mechanism, wherein the bag-placing mechanism is used to limit the placement of the packaging bag, and the bag-grabbing mechanism is used to grab the packaging bag and move it to a specified position; the bag-sucking device is used to separate the bag opening of the packaging bag, the loading device is used to load the packaging bag, and the sealing device is used to seal the bag opening. The present invention improves the efficiency of separating the bag opening of the packaging bag, facilitates the subsequent bagging, and improves the applicability of the bag-sucking device to different types of packaging bags; the loading device of the present invention has the advantages of simple structure, flexible operation, accurate bagging of materials, and makes subsequent packaging bags easier to seal; the bag-feeding device of the present application adopts a method of clamping and fixing the packaging bag for conveying instead of the cam conveying method of the horizontal bag-feeding packaging machine, and the equipment structure is relatively simple, low cost, stable operation, and convenient debugging and maintenance.

The invention discloses a supercritical carbon dioxide cycle power generation system with a water cooling structure, which comprises a cooler, a heater, a compressor, a turbine and a generator, and further comprises a circulating pump and a water heat exchanger, the cooler, the circulating pump and the water heat exchanger are communicated through pipelines and form a main circulation loop of a coolant, a main loop regulating valve and a transmitter are arranged in the main circulation loop, the main loop regulating valve is arranged at a coolant inlet of the cooler, and the transmitter is arranged between the cooler and the compressor; and the transmitter and the main loop regulating valve are electrically connected with the input end and the output end of the control device respectively. According to the supercritical carbon dioxide cycle power generation system with the water cooling structure, a water pump frequency adjusting system, a water temperature adjusting system and the like are not needed, the water cooling structure is simple in composition, small in size and weight and low in energy consumption, and the equipment investment can be effectively reduced.

The invention belongs to the technical field of recycling of waste blended textiles, and particularly discloses a method for oxidative depolymerization of waste blended textiles into alpha-hydroxy acid and terephthalic acid, which comprises the following steps: adding waste blended textiles, a solid acid catalyst and a reaction solution into a catalytic reaction kettle, filling a certain amount of air and / or oxygen, and reacting for 2-4 hours; the method comprises the following steps: adding alpha-hydroxy acid into a reaction kettle, heating to a specified temperature, stirring, carrying out selective oxidative depolymerization, after the reaction is finished, filtering, concentrating, separating and purifying the product to obtain terephthalic acid, glycollic acid and lactic acid, and taking terephthalic acid and alpha-hydroxy acid as depolymerization products of blended textiles and also as catalysts to participate in depolymerization of blended textiles. According to the method, the autocatalysis process of depolymerization conversion of the waste blended textiles is achieved, the product composition is simple and easy to recycle, carbon atoms in the raw materials are fully utilized, the requirement of green chemistry is met, depolymerization conversion of multiple components in the waste blended textiles is achieved through a one-pot method, the process steps are few, economic benefits are high, and actual operation is simple.

The invention discloses a heat-proof and heat-insulating coating, a coating and a preparation method thereof, and relates to the field of heat-proof and heat-insulating coatings. The self-made functional modified light heat-insulating filler, the ceramic forming filler and the photosensitive modified matrix film forming matter are mixed and cured to obtain the heat-proof and heat-insulating coating. A coating layer obtained from the prepared coating is based on the functional modified light heat insulation filler, large-size coating forming and uniform forming can be achieved on the basis that the excellent three-dimensional structure and performance are kept, high-strength combination with a base material is achieved, and the temperature resistance and heat insulation performance of the material are improved.

The utility model discloses a refrigerant side heat management integration module and a heat management system thereof, the heat management integration module comprises a refrigerant side valve plate and a refrigerant side welding plate, the end face of the refrigerant side valve plate is provided with a plurality of flow channel grooves and installation interfaces communicated with the flow channel grooves; the refrigerant side welding plate is welded to the rear end face of the refrigerant side valve plate, the refrigerant side welding plate and the flow channel groove form a refrigerant flow channel, and a multi-way connector communicated with the corresponding refrigerant flow channel is welded to the outer side of the refrigerant side welding plate. A compressor, a gas-liquid separator, a liquid-cooled condenser, a battery cooler, a temperature and pressure sensor, an electronic expansion valve, a one-way valve, an air-cooled condenser and an evaporator are dispersedly mounted on the mounting interface and the multi-way interface; the integrated valve has the advantages that various valves applied to a heat pump air-conditioning system can be integrated together, so that an air-conditioning pipeline in a cabin can be simplified, the weight cost of the pipeline is reduced, the assembly working hours of final assembly are reduced, and the working efficiency is improved.

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 invention discloses a succinimide leaching agent suitable for co-production of light calcium carbonate through CO2 indirect mineralization of alkaline solid waste. The succinimide leaching agent is prepared from a main leaching agent succinimide and a solvent water; the concentration of the main leaching agent succinimide in the succinimide leaching agent is 5-25 wt%. The succinimide leaching agent suitable for CO2 indirect mineralization of alkaline solid waste is simple in composition, high in calcium ion leaching efficiency, high in selectivity, low in leaching agent viscosity and capable of being recycled, and loss and cost of the leaching agent are reduced; in the mineralization stage, CO2 is promoted to be dissolved from a gas phase to a liquid phase, so that the reaction rate of the mineralization reaction is favorably improved, the production efficiency of calcium carbonate is improved, and the process cost is reduced.

The invention discloses a plasma-assisted liquid metal self-activation method and application thereof.The self-activation method comprises the steps that patterned liquid metal photoresist is subjected to plasma treatment, hydrophilic groups are introduced into liquid metal nanoparticles and a silicon substrate, and then an elastomer solution is directly poured on a micro-scale liquid metal pattern; and when the elastomer film is stripped from the silicon substrate, due to the interaction of hydrophilic groups, the adhesive force and cohesion between the liquid metal nanoparticles and the silicon substrate and between the liquid metal nanoparticles are enhanced, so that the local stress concentration is enhanced, and the discrete particles are more easily broken and fused to form a conductive path. This process maintains high quality of the lithographically defined microscale liquid metal pattern while converting it from an insulator to a high conductor.

The invention relates to a polymyxin inhalation liquid preparation and a preparation method thereof. The polymyxin inhalation liquid preparation comprises 0.1-5% (W / V) of polymyxin B sulfate, 0.05-1% (W / V) of a stabilizer, 0.1-0.9% (W / V) of an osmotic pressure regulator, a pH value regulator and a solvent, the pH (Potential of Hydrogen) of the liquid preparation is 3.0 to 6.0; the solvent is selected from purified water and water for injection; the polymyxin inhalation solution provided by the invention is simple in composition, the pH value of the polymyxin inhalation solution is 3.0-6.0, osmotic pressure and isotonic pressure are simultaneously realized, bronchus spasm and cough caused by the polymyxin inhalation solution can be reduced, safety evaluation verifies that the polymyxin inhalation solution has better safety, and a new choice is provided for clinical application.

The invention relates to the technical field of vehicle testing, and discloses a test system and test method of a vehicle controller and a vehicle, and the test system of the vehicle controller comprises an upper computer which is used for sending a control test signal; the bus equipment is connected with the upper computer through a USB (Universal Serial Bus) or an industrial Ethernet; the input end of the function test device is connected with the upper computer through the bus device so as to generate a corresponding function simulation test signal according to a control test signal sent by the upper computer, and the output end of the function test device is connected with the controller to be tested so as to transmit the function simulation test signal to the controller to be tested. And the function test of the to-be-tested controller is realized. According to the invention, the convenience and efficiency of function testing of the to-be-tested controller of the vehicle are improved, and the testing cost is reduced at the same time.

According to the application of the clostridium butyricum in treatment of the autism, in a constructed maternal immune activated mouse autism model, the clostridium butyricum can mediate the intestinal barrier function and effectively improve the autism symptom by adjusting the balance of intestinal flora, increasing the permeability of the intestinal barrier function, inhibiting inflammatory factors and the like. The clostridium butyricum has the possibility of being used as the medicine for improving the autism, and a new application field is provided for the clostridium butyricum.

The invention discloses a laser triangular displacement measuring method and device adopting a multi-view metasurface. Firstly, a transmitting mirror group, a receiving mirror group and an optical filter in a traditional laser triangular displacement sensor are integrated into an integrated multi-view metasurface module based on the metasurface technology, and the module can simultaneously achieve the effects of collimation of emergent laser, imaging of scattered light spots on a target measured object and filtering of stray light of non-working wavelength in the environment; the system has extremely high function integration level, and meanwhile, the complexity of the system is also reduced. A target measured object is scanned by building a displacement calibration experiment platform, the mapping relation between the displacement of the target measured object and the position of an equivalent light spot is obtained, and laser triangular displacement measurement is achieved. The laser triangular displacement measuring device is simple in system composition, easy to assemble and compact and small in whole, can be easily integrated on a moving device to achieve high-precision scanning, and is not prone to mechanical interference.

The invention discloses a high-performance carbon-coated sodium vanadium fluorophosphate positive electrode material, a sodium ion battery and a preparation method and application thereof, and belongs to the technical field of sodium ion batteries. The preparation method provided by the invention comprises the following steps: (1) heating a mixture containing a sodium source, a vanadium source, a phosphorus source, a fluorine source, a carbon source and water I, stirring until gel is formed, and drying to obtain a precursor; and (2) carrying out ball milling on the precursor, and then placing the precursor in an inert gas atmosphere for heating II to obtain the high-performance carbon-coated sodium vanadium fluorophosphate positive electrode material. By adjusting the proportion of the sodium source, the vanadium source, the phosphorus source and the fluorine source, the prepared sodium vanadium fluorophosphate positive electrode material improves a voltage platform, so that the energy density of a sodium ion battery is improved, and the assembled sodium ion battery has extremely high capacity and excellent long cycle performance.

The invention discloses a paper feeding width adjusting mechanism of a printer. The paper feeding width adjusting mechanism comprises a paper feeding width adjusting body, an adjusting plate I, an adjusting plate II, a rotating swing rod and a locking structure. The adjusting plate I and the adjusting plate II are installed on the two sides of the front face of the paper feeding width adjusting body respectively and can horizontally move along sliding grooves in the paper feeding width adjusting body, and the corresponding sliding grooves of the adjusting plate I and the adjusting plate II are not in the same straight line. The rotating swing rod is rotationally connected to the middle of the back of the paper feeding width adjusting body, and meanwhile the two ends of the rotating swing rod are connected with the adjusting plate I and the adjusting plate II correspondingly to make the adjusting plate I and the adjusting plate II move oppositely or oppositely; and the locking structure is used for locking the position of the adjusting plate I. The method has the advantages of being low in part precision requirement, small in machining difficulty and the like, especially has few installation procedures, and is suitable for large-scale industrial production.

The invention discloses a kit for detecting HLA-B27 and a detection method. The kit for detecting HLA-B27 comprises a PCR (Polymerase Chain Reaction) solution, a primer probe mixed solution, a positive reference substance and a negative reference substance, the primer probe mixed solution comprises an upstream primer 1F, a downstream primer 1R and a probe 1P for detecting the HLA-B27, and an upstream primer 2F, a downstream primer 2R and a probe 2P for detecting a reference gene. A fluorescent PCR-melting curve method is adopted, sequence alignment is carried out according to an NCBI database, primers and probes which are high in specificity and capable of simultaneously detecting main subtypes (HLA-B27: 02, HLA-B27: 04, HLA-B27: 05, HLA-B27: 06, HLA-B27: 07 and HLA-B27: 24) of the HLA-B27 are selected, and compatibility detection of different subtypes of the HLA-B27 can be achieved through a pair of primers and a probe. The Tm value in the melting curve instead of the Ct value of the amplification curve is adopted for result judgment, qualitative accuracy is achieved, and the result is visual and easy to interpret.

The invention discloses a trypsinogen-2 detection method and kit based on a homogeneous light-excited chemiluminescence immunoassay technology, and belongs to the technical field of immunodetection analysis. The method provided by the invention comprises the following steps: preparing donor microspheres and receptor microspheres coupled with a trypsinogen-2 capture antibody, adding the coupled donor microspheres and receptor microspheres into a sample to be detected, uniformly mixing and incubating without cleaning, and finally detecting by using a fluorescence detector. The kit comprises donor microspheres coupled with a trypsinogen-2 capture antibody, receptor microspheres coupled with a trypsinogen-2 detection antibody, a trypsinogen-2 standard substance solution and an analysis buffer solution. The trypsinogen-2 content in a sample to be detected can be rapidly detected by using the characteristics of a double-antibody sandwich immunoassay and light-activated chemiluminescence, and the trypsinogen-2 detection kit has the characteristics of wide detection range, high sensitivity, high accuracy, rapid and simple detection and the like, can be used for early auxiliary diagnosis of acute pancreatitis clinically, and has a relatively good application prospect.