1504results about How to "Avoid gathering" patented technology

The invention belongs to the field of air electrode materials of zinc-air batteries, and particularly relates to a self-supporting electrode and a preparation method and application thereof. The invention discloses a self-supporting electrode. The self-supporting electrode comprises a conductive substrate, a nitrogen-doped carbon nanotube and FeNi3 particles distributed in the nanotube, the nitrogen-doped carbon nanotubes grow on the surface of the conductive substrate. According to the self-supporting electrode provided by the invention, nickel has high OER catalytic activity, meanwhile, iron shows high ORR catalytic activity, and an efficient bifunctional catalyst is obtained by adding heteroatom iron into a nickel-based material under a synergistic effect; ferronickel metal is distributed in the nitrogen-doped carbon nanotube, so that metal particle aggregation in a high-temperature synthesis process or decomposition failure under an extreme working condition is effectively prevented; the self-supporting electrode is high in electrochemical activity, good in cycle performance, good in flexibility and portability, stable and excellent in battery performance and excellent in mechanical performance.

The invention relates to the technical field of epoxy resin coatings, and discloses an inorganic composite nano anticorrosive coating material and a preparation method thereof. The inorganic composite nano anticorrosive coating material comprises a component A, a component B and a component C, wherein the component C is obtained by mixing a functional modified inorganic composite nano material and aluminum sorbate; the component A is obtained by mixing modified epoxy resin, a defoaming agent and an anti-settling agent, and the component B comprises a polyamide curing agent. The inorganic composite nano anticorrosive coating material disclosed by the invention has excellent toughness, wear resistance, corrosion resistance, antibacterial and antifouling properties and ultraviolet resistance.

The invention discloses an electrostatic discharge semiconductor device and a manufacturing method thereof. The electrostatic discharge semiconductor device comprises a substrate; an epitaxial layer; the first well region of the first doping type extends from the surface of the epitaxial layer to the surface of the substrate; the second well region and the third well region are provided with a second doping type and are respectively positioned on two sides of the first well region; the fourth well region is provided with a second doping type, is positioned in the first well region and is separated from the substrate; the fifth well region and the sixth well region are provided with the first doping type and are symmetrically distributed on the two sides of the fourth well region; and the first injection region and the second injection region are distributed in each well region at intervals and respectively have a first doping type and a second doping type, the second injection region in the second well region and the third well region is connected to the cathode, and the first injection region and the second injection region in the fourth well region are connected to the anode. According to the electrostatic discharge semiconductor device, the avalanche breakdown voltage between the well regions and the trigger voltage of the device are adjusted through the floating fifth well region and the floating sixth well region, and the electrostatic protection capability is improved.

According to the modified fiber mining filling material and the preparation method thereof provided by the invention, through a dual modification technology of plasma treatment and a silane coupling agent, the uniform dispersity of fibers in a cementing agent is enhanced, and the properties such as rapid hardening, early strength and compressive strength retention rate of the filling material are remarkably improved. The filling material comprises cement clinker, solid waste, a retarder, an early strength agent, modified fibers, an accelerator, gypsum, a water reducing agent, a suspending agent and other raw materials, the modified fibers are treated through specific steps, surface functional groups are increased, and the compatibility and binding power of the modified fibers and a cementing agent are improved. The filling material disclosed by the invention has the advantages of good transportability, simplicity and convenience in construction, low cost and environmental protection characteristic, conforms to the development trend of green mining industry, is particularly suitable for being applied to mine filling and supporting, and has wide application prospects and social and economic values.

The invention belongs to the technical field of veterinary preparations, and particularly relates to a tilmicosin premix and a preparation method thereof. The tilmicosin premix is prepared from the following raw materials: tilmicosin, a polylactic acid-glycolic acid copolymer, lecithin, modified hydroxypropyl methyl cellulose, grafted polyvinylpyrrolidone, polyethylene glycol and an antioxidant, a solid dispersion is formed through lecithin and grafted polyvinylpyrrolidone, the solubility and stability of tilmicosin are enhanced, polylactic acid-glycolic acid copolymer nano-microspheres are prepared through a double-emulsion solvent evaporation method, slow release of drugs is achieved, dodecyl modified hydroxypropyl methyl cellulose and polyethylene glycol are combined, and the sustained release effect is achieved. The solubility and the slow release characteristic are further enhanced. The activity of the granular premix is effectively preserved, and the granular premix is convenient to use and transport.

The invention relates to an underwater bait casting system for mariculture, which comprises a storage bin, a weighing system, a feeder, a bait mixing device, a hydraulic driving device and an underwater conveying device, the bait mixing device comprises a mixing bin and a stirring device, and a feeding port valve and a discharging port valve are arranged at an inlet and an outlet of the mixing bin; the output end of the hydraulic driving device is divided into two paths, one path is connected with the side wall of the mixing bin in the tangential direction, and the other path is connected with a lower discharging pipe of the mixing bin; the underwater conveying device is provided with a conveying pipe with a conveying pump, one end of the conveying pipe is communicated with the lower discharging pipe, the other end of the conveying pipe is communicated with a feeding pipe, and a plurality of feeding nozzles are arranged on the two sides of the feeding pipe. According to the underwater fish feeding device, bait is uniformly fed at a specific depth underwater, fishes can be prevented from gathering due to water surface ingestion, the balance of dissolved oxygen in a water body is favorably maintained, the water quality problem caused by dense fish schools is reduced, meanwhile, the competition pressure and stress reaction between the fishes are reduced, and a more natural and healthy growth environment is provided for the fishes.

The invention relates to the technical field of electromagnetic flowmeter grinding, in particular to a grinding device for electromagnetic flowmeter machining. The device comprises a machine tool base, a grinding mechanism is arranged on the upper side of the machine tool base, a plurality of grinding belts are arranged on the grinding mechanism, a moving device is arranged on one side of the grinding mechanism, the moving device moves on the upper side of the machine tool base, and an electromagnetic flowmeter tube is arranged on the moving device. In the process that the grinding mechanism is inserted into the electromagnetic flow meter tube, the end grinding piece drives the grinding belt to enter the electromagnetic flow meter tube, so that the inner wall of the electromagnetic flow meter tube is ground at the position, with few meshes, on the grinding belt, and large particles on the inner wall of the electromagnetic flow meter tube are ground away; and meanwhile, in the process that the grinding mechanism grinds the electromagnetic flowmeter pipe, the spirally arranged end grinding piece guides chippings ground by the grinding belt in the direction away from the grinding mechanism, and the chippings are rapidly discharged from the interior of the electromagnetic flowmeter pipe.

The invention relates to a metal additive modified Pt-loaded CeO2 catalyst, preparation and application thereof in CO oxidation, and belongs to the technical field of industrial catalysis. The preparation process of the catalyst mainly comprises the following steps: respectively dissolving cerium salt, platinum salt and auxiliary metal salt in deionized water to prepare corresponding precursor solutions; then, mixing the three solutions, and dropwise adding ammonia water under a stirring condition until yellow precipitates are generated; and finally, drying and washing the precipitate, and calcining the solid powder in a proper atmosphere to obtain the assistant metal modified Pt / CeO2 catalyst. La, Pr, Nd or Sm auxiliary metal is introduced into the Pt / CeO2 catalyst, so that the CO catalytic oxidation performance of the catalyst can be improved, and the poisoning resistance of the catalyst in an SO2-containing environment can be enhanced. The method has important significance in the actual industrial application, especially in the catalytic oxidation process under the condition of treating complex flue gas.

The invention relates to the technical field of display devices, in particular to ink for an LED mask, a preparation method of the ink and a preparation method of the LED mask. The ink for the LED mask comprises the following components in percentage by mass: 35%-50% of matrix resin, 25%-40% of a diluent, 15%-25% of a coloring agent, 2%-4% of an accelerant, 2%-4% of an anti-settling agent, 0.1%-1.2% of a weather-proof agent, 0.5%-1% of a dispersing agent, 0.4%-0.6% of a defoaming agent and 0.4%-0.6% of a flatting agent, wherein the coloring agent comprises pigment carbon black of which the blackness is less than or equal to 20; the weather-resistant agent comprises an ultraviolet absorbent and a free radical trapping agent in a mass ratio of (1-3): (1-3). According to the ink for the LED mask, the contrast ratio of the LED mask is improved, meanwhile, the ink color consistency and weather resistance of the LED mask are effectively improved, and therefore the color developing effect of an LED display screen is optimized, and the service life of the LED display screen is prolonged.

The invention discloses drilling equipment for brake disc production, and belongs to the technical field of drilling equipment. Comprising a base, two sets of supporting mechanisms and two sets of drilling mechanisms, the two sets of drilling mechanisms are symmetrically arranged up and down, the drilling mechanism located on the upper side comprises a ring body, two supporting plates and multiple sets of drilling assemblies, and the multiple sets of drilling assemblies are all arranged on the bottom side of the ring body and are annularly and evenly distributed; the punching assembly comprises a clamping sleeve, a clamping plate, a plurality of drill rods, two sets of tensioning components, a transmission shaft and a plugging component, linkage components are arranged in the ring body, the two sets of linkage components on the upper side and the lower side are connected through a driving mechanism, the driving mechanism is arranged on the upper side of the base, a bearing component is arranged between the two sets of drilling mechanisms, and the two sets of drilling mechanisms are driven by the two sets of supporting mechanisms to ascend and descend. And two groups of cooling parts are arranged on the upper side of the base and the upper side of one supporting plate. The problems that clamping and fixing operation is inconvenient, the working efficiency is low, stress on the brake disc is uneven, and displacement is prone to occurring are effectively solved.

The invention discloses a preparation method and application of a magnetic enrichment composite SERS (Surface Enhanced Raman Scattering) detection chip, gold nanoparticles are electrostatically adsorbed on the surface of a magnetic ferroferric oxide nanoring, the prepared material is subjected to cyclodextrin modification, nanogaps among the gold nanoparticles form hot spots, a local electromagnetic field enhancement effect is generated, and the magnetic enrichment composite SERS detection chip is obtained. The cyclodextrin molecules adsorb PAHs in the environment through a hydrophobic effect and are fixed in an electromagnetic field enhancement area, amplification of Raman signals is achieved, the magnetic material serves as a carrier, aggregation of gold nanoparticles can be effectively prevented, SERS signals can be further enhanced through a magnetic enrichment effect, and therefore, the method has the advantages that the method is simple, and the application prospect is wide. The high-sensitivity and high-selectivity detection of PAHs in the tail gas of the engineering machinery vehicle is realized by constructing the magnetic composite SERS nano sensing chip.

The invention relates to the technical field of organic synthesis, and provides a method for efficiently preparing 1, 3-cyclohexanedione through selective hydrogenation, which comprises the following steps: preparing hexagonal mesoporous silicon oxide by taking tetraethoxysilane as a silicon source and dodecylamine as a structure-directing agent, compounding the hexagonal mesoporous silicon oxide with titanium oxide to obtain a carrier, and taking palladium as a catalytic active component to prepare a catalyst I; preparing a copper-based coordination polymer by taking copper chloride dihydrate and phenylacetylene as raw materials; preparing a catalyst II by taking nickel as a catalytic active component; the method comprises the following steps: reacting resorcinol with hydrogen under the combined action of alkali, water, a catalyst I and a catalyst II, and then acidizing and recrystallizing to obtain the target product 1, 3-cyclohexanedione. According to the method, resorcinol is taken as a raw material, the self-made catalyst I and the self-made catalyst II are adopted for concerted catalytic hydrogenation, 1, 3-cyclohexanone with relatively high purity is prepared, and the catalysts are high in catalytic activity, easy to separate and still have very good catalytic performance after being recycled for multiple times.

The invention belongs to the technical field of geotechnical engineering, and particularly relates to a nanocarbon reinforced superfine cement-based blocking material as well as a preparation method and application thereof. The superfine cement-based blocking material prepared by the invention is prepared by uniformly mixing 45-50 parts of cement, 0.5-2.5 parts of a solid waste sintered active material, 0-0.05 part of a water reducing agent, 0.015-0.1 part of carbon nanotubes, 0.5-2.5 parts of a 1% solution of carbon quantum dots and 45-50 parts of water. The material has relatively low porosity and is not dispersed; the high groutability is achieved, and the material can permeate into tiny holes; and it is guaranteed that the material has high strength, the crushed rock bonding and reinforcing strength is high, and the material has wide application prospects.

The invention provides a photoresist coating method, which comprises the following steps of: before spraying photoresist to the central position of a wafer, selecting a target position between the center of the wafer and the edge of the wafer, firstly spraying the photoresist between the center of the wafer and the target position of the wafer, and continuously independently spraying the photoresist to the target position of the wafer; the rotating speed of the wafer is controlled to prevent the photoresist from gathering and prevent the photoresist from being thrown out of the surface of the wafer to cause waste, so that uniform photoresist film thickness is formed on the surface of the wafer with different heights, the photoresist is reduced and even prevented from forming inclined grains along the edge of the high step, and the preparation efficiency of the device is improved; meanwhile, nonuniform exposure pattern line width caused by nonuniform photoresist thickness can be reduced or even avoided, so that the influence on the performance and yield of the device caused by nonuniform exposure pattern line width is reduced or even avoided.

The invention discloses a method for modifying lutein lipidosome by composite polyphenol, which comprises the following specific steps: (1) dissolving lutein and a lipid material to obtain a lutein lipid solution, and carrying out rotary evaporation to form a film; (2) dissolving the composite polyphenol in a thermal phosphate solution, and hydrating the xanthophyll film; (3) carrying out rotary evaporation after hydration to form a film, and adding a cholate solution for redissolving; and (4) after ultrasonic treatment, passing through a polycarbonate film and extruding to obtain the lutein liposome. The lutein liposome modified by the composite polyphenol has the characteristics of high stability and high bioavailability, and the accumulation of lutein in liver and plasma can be remarkably improved.

The invention discloses a trapezoidal sail multi-target size optimization method based on an NSGA-II algorithm, and relates to the technical field of unmanned sailboats. According to the method, the aspect ratio, the taper ratio and the camber ratio are selected as design parameters of the trapezoidal sail, after multiple sets of design parameters are sampled and obtained within the value range of the design parameters based on a Latin hypercube sampling method, a trapezoidal sail model is constructed by utilizing fluid simulation analysis software for each set of design parameters, and the trapezoidal sail model is obtained. Performance evaluation parameters corresponding to each group of design parameters are obtained through simulation, a database is constructed, the database is utilized to train a Kriging agent model for replacement, multiple groups of trapezoidal sail design parameters to be preferentially selected are selected, and multi-target size optimization is performed on the trapezoidal sail design parameters based on an NSGA-II algorithm and the trained Kriging agent model. And determining optimal trapezoidal sail design parameters and verifying the accuracy of the optimal trapezoidal sail design parameters. According to the method, trapezoidal sail design parameters and performance evaluation parameters are combined, and a basis is provided for optimization of a sail design scheme by using an NSGA-II method and a Kriging agent model.

The invention discloses a surface residual liquid cleaning device for printed circuit board processing, which comprises an ultrasonic cleaning mechanism, the ultrasonic cleaning mechanism comprises a cleaning seat, and the bottom of the inner cavity of the cleaning seat is rotatably connected with a stirring rod; and the rotating mechanism is located at the top of the ultrasonic cleaning mechanism and rotationally connected with the ultrasonic cleaning mechanism, the rotating mechanism comprises a hollow pipe located at the top of the cleaning base, the left side and the right side of the surface of the hollow pipe are each sleeved with a round rotary table, and the left end of the hollow pipe communicates with an air inlet connector. The technical problems that in the using process of an existing surface residual liquid cleaning device for printed circuit board machining, residual liquid in the printed circuit board manufacturing process is inconvenient to efficiently and evenly clean, a circuit board is prone to being corroded and damaged, and the electrical performance of the printed circuit board can be reduced are solved.

The invention discloses a preparation method of DNA nano-frame assisted monodisperse perfluorinated carbon nano-particles and application of the DNA nano-frame assisted monodisperse perfluorinated carbon nano-particles to fluorine nuclear magnetic imaging. The preparation method comprises the following steps: introducing fluorocarbon chain modification into a DNA nano-frame structure space through hybridization complementation; the preparation method comprises the following steps: dispersing perfluorocarbon PFC in a surfactant to form a dispersion solution, co-incubating the dispersion solution and a DNA nano-frame structure modified by an introduced fluorocarbon chain, and capturing PFC particles entering a space by taking the fluorocarbon chain in the DNA nano-frame structure as a seed, so that the PFC is self-assembled in the DNA nano-frame structure to form nano-particles with uniform size, namely the nano-fluorine probe is obtained. According to the method, the PFC nano-particles are prepared by utilizing the three-dimensional DNA nano-frames (DNF) with various different structures, the method has the advantages of design controllability, uniform size and the like, and the prepared fluorine probe is single and sharp in nuclear magnetic signal and has a good application prospect.

The invention relates to the technical field of organic synthesis processes, and provides a method for preparing methyl o-chlorobenzoate from o-chlorotoluene, which comprises the following steps: adding o-chlorotoluene, acetic acid and a supported catalyst into a mixing kettle, heating to 60-120 DEG C, and stirring to obtain a mixed solution; pouring the mixed solution into a reaction kettle, introducing air to pressurize, heating to 130-180 DEG C, reacting for 2-4 hours, discharging, cooling, filtering, washing and distilling to obtain o-chlorobenzoic acid; the method comprises the following steps: mixing o-chlorobenzoic acid and methanol, stirring, adding a catalyst, heating to 70-90 DEG C, reacting for 2-4 hours, cooling, extracting, washing, standing and layering to obtain an upper phase, namely methyl o-chlorobenzoate. The preparation method has the advantages of low production cost, less waste gas and waste water, and realization of the coordinated development of economic benefits and environmental benefits, and the methyl o-chlorobenzoate prepared from o-chlorotoluene has the advantages of high yield, high purity, and good application value.

The invention discloses a receiver-drier, and belongs to the field of receiver-driers. The receiver-drier comprises a shell and a filter box fixed in the shell, an air outlet and an air inlet are formed in the upper end of the shell; the air outlet is communicated with the inner bottom of the shell through a breather pipe; a plurality of water absorption cavities are uniformly formed in the filter box in the circumferential direction; an upper filter plate is mounted at the upper end of each water absorption cavity; a drying agent is filled in the water absorption cavity; a rotating pipe is rotationally connected in the shell; the upper end of the rotating pipe is provided with an upper air cavity right opposite to the upper end of the water suction cavity. A lower filter plate abutting against the lower end of the filter box is arranged at the lower end of the rotating pipe. A lower air cavity is formed in the lower end of the lower filter plate and located under the upper air cavity; the upper air cavity and the lower air cavity are both communicated with the rotating pipe; a centrifugal impeller is rotationally connected into the upper air cavity; and a heating wire is fixedly connected in the lower air cavity. And through rotation of the rotating pipe, the drying agent in each water absorption cavity is regenerated in sequence.

The waste metal screening and magnetic separation system comprises a bottom plate and a supporting frame fixedly arranged on the top face of the bottom plate through supporting legs, a transmission roller and a permanent magnet roller are rotationally arranged on the two sides of the surface of the supporting frame correspondingly, and a first conveying belt is in transmission connection between the surface of the transmission roller and the surface of the permanent magnet roller. A collecting frame is fixedly arranged on one side of the top face of the bottom plate, L-shaped flow guide plates are fixedly arranged on the two sides of the interior of the collecting frame, and a second conveying belt is in transmission connection between the interiors of the two L-shaped flow guide plates. According to the waste metal screening and magnetic separation system and the screening and magnetic separation method thereof, magnetic metal fragments collected after magnetic separation can be rapidly screened according to the particle size, and in the screening process, the screening net plate is locally vibrated by the local vibration mechanism according to the blocking degree in the meshes, so that rapid discharging of the fragments is facilitated, and the screening speed is increased.

The invention belongs to the technical field of chiral boron compound synthesis, and particularly relates to an MOF-Cu (II) / CMC composite material and a preparation method and application thereof. The preparation method of the MOF-Cu (II) / CMC composite material comprises the following steps: dropwise adding an aqueous solution of sodium carboxymethyl cellulose into an aqueous solution of bivalent copper salt, carrying out solid-liquid separation, mixing obtained composite microspheres and an organic solution of trimesic acid, heating, and carrying out solid-liquid separation to obtain the MOF-Cu (II) / CMC composite material. The composite material is applied to an asymmetric chiral boron addition reaction, the reaction is carried out at room temperature, the conditions are mild, the use range of a substrate is wide, and the yield and enantioselectivity are high. According to the method, the chiral organic boride can be synthesized in a simple component solvent, an efficient new method is provided for preparation of drug molecules and active intermediates, the substrate range of preparation of the chiral organic boride is widened, and the method has important theoretical and practical significance.

The invention discloses a novel process for producing a high-quality liquid fertilizer by using an acetylisovaleryltylosin tartrate finished product liquid, and relates to the technical field of fertilizer preparation, and the novel process comprises the following specific steps: step 1, firstly, weighing polyoxyethylene sorbitan fatty acid ester, ethylenediamine tetraacetic acid disodium salt, cellulase and protease, and uniformly stirring; the preparation method has the advantages that the polylactic acid-glycolic acid copolymer serving as a functional high-molecular polymer has good biocompatibility and controlled release performance, and when a solution prepared from the polylactic acid-glycolic acid copolymer is emulsified and mixed with an alginate oligosaccharide solution, a uniform emulsion-like active synergistic carrier solution is formed; the emulsifying and mixing process enables the effective components in the two solutions to be fully and uniformly combined together to form a stable microsphere and micelle structure, so that the continuous and slow release of the acetylisovaleryltylosin tartrate and the synergistic plant growth regulatory factors thereof in the growth cycle of crops can be ensured, the fertilizer effect of the acetylisovaleryltylosin tartrate and the synergistic plant growth regulatory factors thereof can be fully exerted, and the crop quality is improved. Therefore, the problem that the fertilizer efficiency is not obvious in the prior art is effectively solved.

The utility model provides a magnetic latching relay. The magnetic latching relay comprises a base, a fixing frame, a monitoring movable spring and a monitoring static spring. Wherein the fixing frame is assembled on the base, the fixing frame is provided with an inserting structure, the inserting structure is provided with an inserting space, the inserting structure comprises a first partition piece, the first partition piece is arranged in the inserting space, and the first partition piece is provided with a first dispensing opening and a second dispensing opening which are communicated with the inserting space. The monitoring movable spring and the monitoring static spring are inserted into the insertion space in the vertical direction, the monitoring movable spring extends out of the first dispensing opening, the monitoring static spring extends out of the second dispensing opening, and the first dispensing opening and the second dispensing opening are used for dispensing so as to fix the monitoring movable spring and the monitoring static spring. According to the magnetic latching relay, the dispensing operation is simple, the stability is enhanced, the monitoring static spring, the monitoring movable spring and the fixing frame are fixed into a whole after the glue solution is cured, and the monitoring stability of the monitoring movable spring and the monitoring static spring is improved.

The invention discloses a bio-based waterborne polyurethane coating and a preparation method thereof, and belongs to the technical field of coatings. The bio-based waterborne polyurethane coating prepared by the invention is prepared from the following raw material components in parts by weight: 70 to 80 parts by mass of bio-based polyurethane dispersion liquid, 40 to 60 parts by mass of polysiloxane dispersion liquid, 2 to 5 parts by mass of a cosolvent, 0.1 to 0.5 part by mass of a defoaming agent, 0.5 to 1 part by mass of a photoinitiator and 0.1 to 3 parts by mass of an antioxidant, wherein the bio-based polyurethane dispersion liquid is obtained by dispersing bio-based polyurethane in deionized water, and the bio-based polyurethane is obtained by reacting a polyisocyanate monomer, a catalyst, castor oil and a chain extender; the polysiloxane dispersion liquid is obtained by performing polycondensation on siloxane monomers and then dispersing the siloxane monomers in deionized water.

The invention belongs to the technical field of precious metal electronic paste, and particularly relates to a preparation method and application of submicron spherical gold-platinum-palladium alloy powder used for being matched with low-temperature co-fired ceramics. The preparation method comprises the following steps: mixing a tetrachloroauric acid solution, a hexachloroplatinic acid solution and a tetrachloropalladium (II) acid solution to obtain a gold-platinum-palladium mixed solution; the gold-platinum-palladium mixed solution, the dispersing agent solution and the modified reducing agent solution are mixed for a second time, after a reduction reaction is conducted, static settlement and solid-liquid separation are conducted in sequence, obtained solids are washed and dried in sequence, and the obtained submicron spherical gold-platinum-palladium alloy powder used for being matched with the low-temperature co-fired ceramic has the advantages of being uniform in particle size, free of agglomeration, high in dispersity and the like. After low-temperature co-firing with a ceramic substrate, the substrate has the characteristics of flatness, no bubble, excellent weldability and soldering resistance, good batch stability and the like.

The invention provides a softening agent for acrylic finishing and a preparation method thereof. The softening agent comprises the following components in parts by weight: 12-15 parts of modified amino silicon oil, 8-10 parts of an emulsifier, 1-3 parts of glacial acetic acid, 12-16 parts of polyvinyl alcohol, 5-7 parts of terpolymer silicone oil, 12-15 parts of polyethylene glycol fatty acid ester, 2-3 parts of a stabilizer, 2-4 parts of a stiffness agent and 50-60 parts of water. The softening agent prepared by the invention can enable acrylic fibers to have better bulkiness, softness, elasticity and good stiff and smooth properties.

The present invention relates to a thermal bubble type inkjet printer, comprising: a recording head having a plurality of nozzle rows for ejecting inks of a plurality of colors, the recording head reciprocating to print an image; the ink is supplied to the recording head and at least comprises black ink, cyan ink, magenta ink and yellow ink, and each color of ink is correspondingly matched with one nozzle row; a black nozzle row corresponding to black ink and a yellow nozzle row corresponding to yellow ink in the recording head are arranged at positions farthest from each other along the moving direction of the recording head; the inks in various colors contain dyes as color materials, and the static surface tension of the yellow ink is the lowest than that of the inks in other colors. According to the thermal bubble type ink-jet printer in the embodiment, even if a heat dissipation plate is not used, heat dissipation of the recording head can be effectively achieved, heat accumulation can be avoided, printed images can be prevented from being disordered, the speed that yellow ink permeates into a printing medium can be higher, and meanwhile the color uniformity of the printed images is guaranteed.

The invention relates to the technical field of tumor detection, in particular to a tumor drug resistance detection device based on artificial intelligence. Comprising a bottom frame, the bottom frame is fixedly connected with a shell, the shell is provided with a hydraulic push rod, the telescopic end of the hydraulic push rod is fixedly connected with a transverse rod, the transverse rod is fixedly connected with a first moving rod, the first moving rod is fixedly connected with a first piston plate, the bottom frame is provided with a first motor, and an output shaft of the first motor is fixedly connected with a rotating plate. The rotating plate is provided with a middle plate, the middle plate is in sliding connection with a first sliding column, and the first sliding column is provided with a cooling plate. The first piston plate is used for compressing air in the shell, and the cooling plate is used for cooling the nearby area, so that tumor cells are in a high-pressure and low-temperature environment similar to deep sea in the drug resistance detection process, and the normal living environment of the tumor cells in the drug resistance detection process is improved; and inaccurate detection caused by the change of the living environment is avoided.

The invention provides a polymeric composite nanofiber membrane and a preparation method and application thereof.The polymeric composite nanofiber membrane comprises a hydrophilic supporting layer, a micro-sodium electrode layer and a nano power generation layer, the hydrophobic supporting layer, the micro-sodium electrode layer and the hydrophilic supporting layer are made of polyacrylonitrile and cellulose acetate, the micro-nano electrode layer is made of a copper-plated polyester spinning electrode, and the nano power generation layer is made of cellulose acetate. The nano power generation layer is prepared by compounding polyvinylidene fluoride and a zinc oxide nano material through an electrostatic spinning technology, the hydrophilic support layer is prepared by compounding polyacrylonitrile and zinc oxide, and the hydrophobic support layer is a polytetrafluoroethylene material layer; the preparation method comprises the following steps: sequentially superposing all the layers of materials, and preparing the multi-layer polymeric composite nanofiber membrane through a lamination process. The application of the polymer composite nanofiber membrane comprises application of the polymer composite nanofiber membrane in a mask, so that the environment in the mask is improved, and the durability and wearing comfort of the mask are improved. The polymeric composite nanofiber membrane provided by the invention has reliable mechanical strength and hydrophobic interface.