272results about How to "Reduce aggregation" patented technology

The utility model relates to the technical field of rectification equipment, and particularly discloses hydrocyanic acid rectification equipment which comprises a tower body, a tower tray structure arranged in the tower body, a spraying structure arranged at the top of the tower and a liquid separation structure arranged at the bottom in the tower body, the liquid separation structure comprises a connecting ring table fixed on the inner wall of the tower body and a plurality of first separation plates fixed in the connecting ring table, and the bottom surfaces of the first separation plates are not in contact with the inner bottom surface of the tower body. The problems that hydrocyanic acid is easy to polymerize at the tower bottom and hydrocyanic acid residues exist exist.

The invention relates to the technical field of quick butt joint of pipelines, in particular to a quick butt joint device and method for assembly type mechanical connection pipelines, the quick butt joint device comprises two bottom plates arranged on one side of a round pipe, and a torsion transition mechanism is arranged above the bottom plates and comprises a first hoop; the tops of the three first hoops are all in movable contact with second hoops, and supporting seats are fixedly connected to the inner walls of the bottoms of the first hoops. In the butt joint process of the hose and the round pipe, high-concentration torsion generated after the hose is kept aligned is dispersed to other positions of the hose, so that the concentration of the torsion at the butt joint position is reduced, deformation of a flange on the hose in the butt joint process can be reduced, and the butt joint quality of the hose is improved. The torsion concentrated on the flange on the hose is gradually dispersed into a larger area of the whole hose, slow transition of the torsion at the joint of the flange on the hose is achieved, the stability and accuracy of butt joint are improved, and the butt joint efficiency is further improved.

The ignition structure comprises an ignition needle and a discharge column, the lower surface of the discharge column faces the discharge end of the ignition needle, the lower surface of the discharge column comprises a plurality of conductive tips, and the distances from the conductive tips to the discharge end of the ignition needle are equal. The plurality of conductive tips are arranged on the lower surface of the discharge column, the greasy dirt can be shared, the greasy dirt is prevented from gathering and completely covering the lower surface of the discharge column, the greasy dirt gathered at the conductive tips easily drips under the gravity action of the greasy dirt, and therefore gathering of the greasy dirt on the lower surface of the discharge column is further reduced. The distances between the multiple conductive tips and the discharge end of the ignition needle are equal, all the conductive tips can effectively receive discharge of the ignition needle, when part of the conductive tips are covered with oil stains, other conductive tips can effectively receive discharge of the discharge end of the ignition needle, and therefore the ignition success rate is increased.

The invention relates to the technical field of layered product materials, and discloses a polymer-ceramic composite dielectric material, a preparation method and application of the polymer-ceramic composite dielectric material to a capacitor. The preparation method of the polymer-ceramic composite dielectric material comprises the following steps: adding composite modified pullulan and modified composite nanosheets into N, N-dimethylformamide to obtain a mixed solution A, and casting to form a film to obtain an outer film; adding the composite modified pullulan and the modified ceramic-based composite filler into N, N-dimethylformamide to obtain a mixed solution B, and pouring to form a film to obtain an inner-layer film; and clamping the inner-layer film between the outer-layer films, carrying out hot press molding, and cooling to obtain the polymer-ceramic composite dielectric material with a three-layer structure. The polymer-ceramic composite dielectric material provided by the invention has good dielectric property, energy storage property and heat resistance, and can be applied to capacitors.

The invention belongs to the technical field of metal adsorption material preparation, and particularly relates to a preparation method of an attapulgite composite cellulose hydrogel material, which comprises the following steps: (1) uniformly dispersing acid modified attapulgite in water, then adding sodium alginate and polyvinyl alcohol, heating and stirring; (2) adding sodium carboxymethyl cellulose, and continuously stirring to obtain a mixed solution; and (3) injecting the mixed solution into a mold by using an injector, freeze-thawing, freeze-drying, immersing into a CaCl2 solution, cross-linking, washing for multiple times, and freeze-drying again to obtain the attapulgite composite cellulose hydrogel material. Sodium alginate, polyvinyl alcohol, sodium carboxymethyl cellulose and acid modified attapulgite in a proper proportion are matched with a multiple freeze drying method to construct a three-dimensional structure with multiple chemical adsorption, high specific surface area, long diffusion channel and abundant pores, so that the adsorption efficiency and the adsorption capacity of the composite material are improved, and various application requirements are met.

The invention relates to a preparation method of propargyl alcohol, and belongs to the technical field of organic chemistry. The reaction formula is as follows: # imgabs0 #; comprising the following steps: (1) taking Z-1, 3-dichloropropene as a raw material, adding dimethyl sulfoxide and solid alkali into an organic solvent, heating, carrying out heat preservation reaction until the content of the Z-1, 3-dichloropropene is less than or equal to 1%, and cooling to room temperature; (2) adding a phase transfer catalyst and water into the reaction liquid obtained in the step (1), heating, and carrying out a heat preservation reaction until an intermediate 3-chloropropyl-2-ene-1-ol is less than or equal to 0.5%; cooling to room temperature; (3) filtering, separating liquid, and adding an extracting agent into a water phase for extraction; and rectifying the extracted organic phase to obtain propargyl alcohol. By controlling the alkaline strength and reaction parameters in the reaction, the production of organic impurity ether compounds can be effectively controlled, the purity and yield of the product are improved, and meanwhile, the reaction time is shortened.

The invention discloses a novel nano-drug as well as a preparation method and application thereof, and co-delivery of siRNA and 3BP is realized on an exosome nano-platform, so that a novel nano-drug Exo (at) siRNA / 3BP-CTX (ERBC) engineering exosome is generated. The surface-modified cetuximab (CTX) is targeted to tumors, and shows high targeting and low toxicity in imaging analysis. CCK-8, western blot and immunofluorescence detection are used for detecting the tumor killing effect and the synergistic effect. The ERBC finds that the occurrence of death-promoting autophagy in KRAS mutation tumors is promoted on the transmission electron microscope (TEM) and molecular level.

The invention belongs to the technical field of metal oxides, and particularly relates to a preparation method of a high-oxygen-storage cerium-zirconium solid solution. The preparation method comprises the following steps: adding zircon salt, cerium salt and doped metal salt into water, stirring and preserving heat to prepare a salt solution; sequentially adding a dispersing agent and a precipitating agent into the salt solution, uniformly mixing, and precipitating to obtain turbid liquid; and sequentially carrying out aging and solid-liquid separation on the turbid liquid, and washing and roasting the obtained precipitate to prepare the high-oxygen-storage cerium-zirconium solid solution. By selecting the new precipitator and dispersant, the problem of insufficient oxygen storage capacity of the cerium-zirconium solid solution in the existing cerium-zirconium solid solution preparation method is improved, and the prepared high-oxygen-storage cerium-zirconium solid solution has good high-temperature sintering resistance.

The present invention belongs to the technical field of nickel-based alloy connection, and specifically relates to a brazing method for improving the high-temperature welding performance of nickel-based alloy joints and a prepared multi-layer welded joint. First, the brazing material is processed into an amorphous brazing foil, and then the amorphous brazing foil is pre-placed between the joint surfaces of the workpieces to be welded of the Inconel625 nickel-based alloy, and then the workpieces to be welded are fixed and placed in a vacuum brazing furnace for brazing. After the brazing is completed, the workpiece group is cooled to below 100°C and then solution treated in a vacuum brazing furnace. The amorphous foil-shaped brazing material used in the present invention has a small difference in melting point from the parent material, which is conducive to capillary action and can optimize the formation and performance of the brazed joint; the solution treatment can improve the distribution and morphology of brittle phases such as borides in the brazing seam. The present invention can be used as a special brazing method for multi-layer brazing joints or Inconel 625 nickel-based alloys, and has great application prospects.

The invention provides kenaf whole stalk APMP pulp and a preparation method thereof.The preparation method comprises the specific steps that S1, air-dried kenaf whole stalks are cut into strips, washing and impurity removing are conducted, and a material a is obtained; s2, carrying out pre-steaming treatment on the material a, and extruding and defibering the steamed material to obtain a material b; s3, adding the material b into the pre-impregnation liquid for impregnation to form slurry, and performing centrifugal dewatering on the slurry until the concentration is 20-30wt% to obtain slurry a; s4, grinding the pulp a to form high-concentration ground pulp, adding the high-concentration ground pulp into the adjusting liquid a, bleaching, and centrifugally dewatering until the concentration is 20-30wt% to obtain pulp b; s5, the pulp b is added into the adjusting liquid b for second-stage bleaching and centrifugal dewatering till the concentration is 20-30 wt%, pulp c is formed, the pulp c is diluted and ground, cleaning and screening are conducted after grinding is completed, and the kenaf whole stalk APMP pulp is obtained. The kenaf whole stalk APMP pulp has good pulp characteristics, the dependence of traditional APMP pulping on wood is broken through, and the current situation that domestic pulping wood resources are deficient is relieved.

The invention discloses a fuel cell gas diffusion layer containing a wave channel, and a preparation method and application thereof. The preparation method comprises the following steps: cutting a substrate layer material and designing the wave channel; the substrate layer material is placed on a laser etching adsorption platform, laser etching is conducted on the first surface of the substrate layer material, a wave channel is obtained, and the extending direction of the wave channel is parallel to the length direction of the substrate layer material; carrying out hydrophobic treatment on the substrate layer material containing the wave channel; then mixing and stirring conductive carbon black, a binder, an emulsion and water to obtain microporous layer slurry; and finally, spraying the microporous layer slurry on the second surface of the substrate layer material, and then drying, thermally treating and curing the substrate layer material to obtain the fuel cell gas diffusion layer containing the wave channels. According to the fuel cell gas diffusion layer containing the wave channels, the mass transfer rate can be increased, transmission and supply of hydrogen and oxygen in air are improved, generated water is effectively discharged, and aggregation of liquid water in the flow channels is reduced.

The invention discloses a coronary heart disease treatment filter which comprises a filter cartridge with a liquid inlet formed in the upper end and a liquid outlet formed in the lower end. A blood guide plate, a first filter membrane, a second filter membrane and a third filter membrane are sequentially arranged in the filter cartridge from top to bottom at intervals; a blood guide hole penetrating through the upper end surface and the lower end surface of the blood guide plate is formed in the blood guide plate close to the left lower end of the blood guide plate; and the first filter membrane, the second filter membrane and the third filter membrane are obliquely arranged towards the lower right part in the filter cartridge. The device has the beneficial effects that the blood guide plate is used for guiding blood downwards, so that the blood can be prevented from splashing upwards in the filter cartridge as much as possible, and lipid substances in the blood of a patient can be well reduced after the blood conveyed into the filter cartridge is subjected to three-stage filtration through the first filter membrane, the second filter membrane and the third filter membrane; when the treated blood is subsequently transfused back to the blood vessel of a patient, the fat content in the blood is low, and the aggregation of thrombus in the blood vessel of the patient can be well relieved.

The invention relates to the technical field of new energy batteries, and discloses a battery and a battery pack. The battery is good in heat dissipation performance, heat accumulation can be reduced, and thermal runaway caused by poor heat dissipation of the battery is improved. In the battery, a battery cell comprises a first tab and a second tab which are opposite in polarity, and the first tab and the second tab are arranged on the same side of the battery cell; the current collecting assembly comprises a first current collecting piece, a second current collecting piece and at least one first through hole, the first through hole is formed in the first current collecting piece, the first current collecting piece is provided with a first tab connecting area and a first pole connecting area, the first tab connecting area at least partially surrounds the first pole connecting area, and the first through hole is formed in the first tab connecting area; the distance from the first through hole closest to the first pole connecting area in the radial direction of the first current collector to the center of the first pole connecting area is L1, the distance from the radial outer edge of the first current collector to the center of the first pole connecting area is L2, and the ratio of the distance L1 to the distance L2 ranges from 0.15 to 0.95.

The invention discloses a natto peptide sea cucumber polysaccharide liposome for synergistically improving cardiovascular health and a preparation method and application thereof, belongs to the field of active peptide delivery systems, and aims to solve the stability problem of natto oligopeptide in gastrointestinal digestive tracts. The phytosterol and the vitamin E are filled between phospholipid double layers of the liposome to support a gap between the phospholipid double layers, and the ratio of the phytosterol to the vitamin E is (1-3): 1, so that the natto oligopeptide liposome has the effects that the storage of the natto oligopeptide and the stability of the natto oligopeptide in gastrointestinal and digestive tracts can be improved, the bioavailability of the natto oligopeptide liposome is improved, and the bioavailability of the natto oligopeptide liposome is improved. The traditional Chinese medicine composition has synergistic effects in the aspects of anticoagulation, thrombolysis and blood fat reduction, and has a good cardiovascular protection effect.

The invention discloses a preparation method of stability-enhanced alginic acid-keratin-based double-coated nanoparticles. The preparation method comprises the following steps: carrying out controllable enzymolysis, enzyme deactivation, centrifugation and freeze-drying on keratin to obtain keratin nanoparticles formed by self-assembly; dispersing the keratin nanoparticles in an acidic buffer solution to carry out structure development, adding bioactive molecules, and adjusting the pH to be neutral to recombine and close the keratin nanoparticle structure to obtain a keratin nanoparticle solution loaded with the bioactive molecules; the preparation method comprises the following steps: taking keratin as a template, dispersing the keratin into a sodium alginate solution, dropwise adding into a calcium chloride solution, cross-linking to form a calcium alginate shell, dialyzing or centrifuging to remove free bioactive molecules, and freeze-drying to obtain the bioactive molecule loaded alginic acid-keratin-based double-coated nanoparticles. The invention also discloses double-coated nanoparticles and application thereof, through controllable enzymolysis and pH regulation and control, the self-assembly and bioactive molecule encapsulation of the keratin nanoparticles are improved, and the double-coated nanoparticles with regular shape, good dispersibility, good redissolvability and good environmental stability are formed.

The invention belongs to the technical field of biology, and particularly relates to application of an ags1 gene segment in regulating monascus exopolysaccharide synthesis. According to the invention, the ags1 gene segment related to synthesis of a mycelium aggregation factor-cell wall alpha-1, 3-glucan is found from monascus for the first time, and experimental research finds that compared with an initial strain, the content of exopolysaccharides in liquid fermentation liquor of monascus recombinant bacteria of which the gene segment is knocked out is remarkably increased, and the content of the exopolysaccharides in the liquid fermentation liquor is remarkably reduced. The content of extracellular polysaccharide in liquid fermentation liquor of monascus recombinant bacteria overexpressing the gene segment is reduced, but the relative content of galactomannan in the extracellular polysaccharide is increased, so that the monascus recombinant bacteria have higher immunocompetence.

The invention discloses a hydrogen-resistant coating as well as a preparation method and application thereof. The hydrogen-resistant coating comprises a first coating and a second coating which are sequentially formed on the surface of the metal matrix, the first coating is composed of stacked conductive two-dimensional materials, and the conductive two-dimensional materials comprise one or more of graphene, graphene oxide and reduced graphene oxide; the second coating is prepared from electrocatalyst powder, dispersion liquid and a binder, and the electrocatalyst powder is transition metal carbide. The invention provides a hydrogen-resistant coating which can fully utilize a cathode protection system of a metal structure and reduce hydrogen atom permeation in a metal service process in a conventional water / wet environment. The hydrogen-resistant coating has the advantages that the structure is simple, the preparation process is simple, the hydrogen-resistant coating can be prepared within the temperature range of 55-75 DEG C, energy is saved, an existing cathode protection system and an electrocatalyst technology are fully utilized, gathering of hydrogen atoms on the surface of the coating is reduced, and the performance of blocking permeation of the hydrogen atoms can be kept for a long time in a water / wet environment.

The utility model belongs to the technical field of refrigeration compressors, and discloses a lower cylinder cover structure for a compressor pump body, the compressor pump body and a compressor. The lower cover body is of a cylindrical structure, and the outer diameter of the lower cover body is the same as that of an air cylinder. The lower end face of the lower cover body extends in the direction of a lubricating oil pool and is arranged close to the oil level of the lubricating oil pool. The lower cover body is designed to be of the cylindrical structure, the lower end face of the lower cover body extends towards the lubricating oil pool, the lower end of the lower cover body occupies the space above the lubricating oil pool, on the premise that the oil level of the lubricating oil pool is guaranteed, the space above the lubricating oil pool is reduced, the gathering amount of refrigerating working media is reduced, and the refrigerating efficiency is improved. The filling amount of the lubricating oil is reduced, meanwhile, the dissolving amount of the refrigerant in the lubricating oil liquid is effectively reduced, the filling amount of the refrigerant is effectively reduced, and the safety of equipment is improved.

The invention discloses a preparation method and an evaluation method of a high-stability ferric oxide / graphene nano composite material, and relates to the technical field of nano materials. The preparation method comprises the following steps: dissolving expanded graphite in DMF (Dimethyl Formamide), standing for one night, carrying out ultrasonic treatment on a mixture in an ice bath environment for 2.5-3 hours, and adding water to prepare a multi-layer graphene solution; respectively weighing FeCl3. 4H2O and anhydrous sodium acetate, adding the FeCl3. 4H2O and the anhydrous sodium acetate into the multilayer graphene solution, and violently stirring to obtain a reaction precursor solution; carrying out heat preservation on the reaction precursor solution in a water bath, cooling to room temperature, and carrying out high-speed centrifugal separation to obtain a wet sample; and washing the wet sample with absolute ethyl alcohol and purified water, and drying to obtain reddish brown powder. The Fe2O3 particles are loaded on the graphene, the two-dimensional lamellar structure, high thermal conductivity and high dispersity of the graphene can effectively prevent agglomeration of the nano particles, uniform distribution of the particles is guaranteed, the stability of the nano material in an aqueous solution is improved, the light absorption capacity of the nano material is improved, and the performance of the material in photothermal conversion is more stable.

The invention relates to the field of cosmetic ingredients, and particularly discloses bentonite gel as well as a preparation method and application thereof. The bentonite gel is prepared from the following components in parts by weight: 65 to 85 parts of grease, 12 to 22 parts of bentonite and 5 to 12 parts of propylene carbonate, the preparation method comprises the following steps: stirring the grease and the bentonite at room temperature at the speed of 400-600r / min for 15-30min, then adding the propylene carbonate, stirring at the speed of 1200-1600r / min for 60-180s until the mixture is sticky, and grinding the stirred product to obtain the bentonite gel. The bentonite gel disclosed by the invention can be used in cosmetics, the problem of insufficient stability of the bentonite gel in the application of cosmetics at present is solved, and the preparation method of the bentonite gel has the advantages of simplicity, high efficiency and low cost.

The invention discloses an iron-based MOFs composite electrode and application thereof. The preparation method comprises the following steps: firstly preparing Cu-coated Fe-ZIF powder in a coprecipitation manner, then preparing Fe2O3-coated Cu-coated Fe-ZIF powder by a hydrothermal reaction, step-by-step ultrasonic and vacuum arc method, and then fusing with S at high temperature by a hot melting method; and preparing the active material Fe2O3 (at) Cu (at) Fe-ZIF (at) S for the iron-based MOFs composite electrode. The Fe-ZIF material is selected as a metal frame to coat the surface of Cu, the Fe-ZIF material and Fe oxide are mixed, calcined and subjected to a direct-current vacuum arc method to synthesize the wooden-stick-shaped nanosphere particles, the defect concentration in a Fe2O3 structure can be effectively increased under the synergistic effect of the advantages of Cu-coated Fe-ZIF components, more loading space is provided for subsequent components such as sulfur, and the Fe-coated Fe-ZIF composite material has a good application prospect. The sulfur loading effect is improved, the sulfur utilization rate is improved, the volume change is relieved, and the battery performance is further improved.

The invention discloses a method for efficiently preparing SiC fibers through airflow-assisted electrostatic spinning, which comprises the following steps: dissolving polycarbosilane in a mixed solvent, adding polyvinylpyrrolidone and lauryl sodium sulfate, and mixing to obtain a spinning solution; wherein the mixed solvent comprises ethanol and tetrahydrofuran; carrying out electrostatic spinning on the spinning solution by adopting an airflow-assisted electrostatic spinning process to obtain a spinning product; and drying the spinning product, and sequentially carrying out heating pre-oxidation and calcination to obtain the SiC fiber. The SiC fiber is prepared from the spinning solution with specific components, the electrical conductivity of the spinning solution is improved through the lauryl sodium sulfate, and the spinning efficiency is improved; meanwhile, high-speed airflow is introduced to assist spinning, operation is carried out at a higher liquid supply speed, and the spinning efficiency is greatly improved. According to the preparation method, the fiber membrane with a'skeleton structure 'is prepared by adopting a grid-shaped special-shaped receiver, so that the spinning efficiency is greatly improved, and meanwhile, the fiber still has high heat insulation performance.

The invention discloses high-temperature-resistant modified polylactic resin and a preparation method thereof, and belongs to the technical field of high polymer material synthesis. The high-temperature-resistant modified polylactic acid resin is prepared from the following components in parts by mass: 70 to 90 parts of modified polylactic acid and 30 to 40 parts of modified nano titanium dioxide. The polylactic acid is modified by carboxylating the polylactic acid, then the silicon dioxide is modified by tannic acid, and carboxyl on the modified polylactic acid and hydroxyl on the modified silicon dioxide form ester groups, so that the mechanical property and heat resistance of the polylactic resin are improved; in addition, silver ions have the antibacterial performance, and meanwhile the antibacterial performance of nano titanium dioxide is improved; a series of performance tests show that the high-temperature-resistant modified polylactic acid resin prepared by the preparation method has good heat resistance, mechanical strength and antibacterial performance, and has a good application prospect.

The invention discloses a methanol oxidation catalyst and a preparation method thereof, and relates to the field of catalysts. The nano titanium ruthenium oxide prepared by a low-temperature hydrothermal method is used as the carrier, the titanium ruthenium oxide crystal phase is of an anatase structure, the nano titanium ruthenium oxide crystal phase and the deposited nickel cobalt manganese metal form a composite structure, a synergistic effect is achieved, and the catalytic performance on methanol is improved. Titanium oxide ruthenium metal is pretreated and then soaked in a self-made water-phase nanometer nickel solution to form a first nanometer nickel metal layer, then surface modification is conducted through a silane coupling agent, then the first nanometer nickel metal layer is placed in a water-phase nanometer cobalt solution, the steps are repeated, a second nanometer cobalt particle layer and a third nanometer manganese particle layer are deposited, and the nanometer nickel metal layer is obtained. And finally, carrying out reduction treatment to obtain the methanol oxidation catalyst with the nano nickel-cobalt-manganese metal layer deposited by taking the titanium ruthenium oxide as the carrier. The catalyst prepared by the invention and methanol generate efficient chain exothermic reaction, the catalytic oxidation is complete, and the catalytic efficiency is high.

The invention relates to the technical field of cement, and discloses a nano-silica-containing cement grinding aid and a preparation method thereof.The nano-silica, sulfur-containing phenolic resin, lignin and water are added into a stirrer and stirred, and the nano-silica-containing cement grinding aid is obtained after stirring is finished. The adsorption of phenolic resin molecules on the surfaces of cement particles can reduce the surface energy of the particles and reduce aggregation and adsorption among the particles, so that the dispersity of materials in the grinding process is improved, the grinding efficiency of a mill can be improved, and meanwhile, the energy consumption is reduced; wherein the quaternary ammonium salt can form a layer of film on the surfaces of cement particles to reduce friction and aggregation among the particles, so that the dispersity and fluidity of the powder are improved, the fineness of the cement is improved, the energy consumption in the grinding process is also reduced, and the sulfur element contained in the cement is also beneficial to improving the grinding efficiency.

The utility model relates to the technical field of rolling devices, and discloses a rolling device for processing oolong tea, which comprises three groups of support legs and a rolling disc fixed among the three groups of support legs, a rolling mechanism is arranged above the rolling disc, the rolling mechanism is connected with the three groups of support legs, and the rolling mechanism is connected with the rolling disc. According to the rolling device for oolong tea processing, in the discharging process, the material blocking disc is kept in an inclined state and generates high-frequency vibration on the material blocking disc, and oolong tea leaves can be more effectively discharged; in this way, the tea leaves can be discharged more smoothly, gathering on the material blocking disc is reduced, the requirement for manual interference is lowered, the labor intensity is relieved, the tea leaves fall from the periphery of the material blocking disc and can fall on the material guiding shell, and it is ensured that the tea leaves can completely fall into the material guiding shell.

The utility model discloses an independent space self-locking type high-voltage switch cabinet which comprises a cabinet body, the cabinet body is provided with a plurality of subareas, the front surfaces of the subareas are provided with cabinet doors, the cabinet doors are installed on the front surface of the cabinet body through electric hinges, and the cabinet doors are respectively provided with a controller and an electronic lock. The cabinet door is provided with an unmanned monitoring structure. The utility model relates to the technical field of switch cabinets, in particular to an independent space self-locking type high-voltage switch cabinet, which realizes automatic closing of a cabinet door, ensures that the cabinet door cannot be closed by pulling a pull rod at intervals during manual operation, and ensures that the cabinet door cannot be closed once operation such as maintenance or overhaul is finished and a worker forgets to close the cabinet door. The electric hinge and the electronic lock can be controlled by the controller to sequentially complete automatic door closing and locking work only by waiting for the pull rod to trigger the switch under the action of the spring, dust accumulation is reduced, heat dissipation of internal electronic elements is facilitated, and the service life of the internal electronic elements is prolonged.

The application discloses a WC+TiC particle reinforced high-entropy alloy coating and a preparation method thereof, and belongs to the field of coating preparation. The coating comprises a bottom layer, and the chemical components and mass percentages of the bottom layer are as follows: carbon: 0.1-0.5%, boron: 1-1.3%, chromium: 19-21%, nickel: 21-24%, silicon: 1-1.5%, molybdenum: 8-10%, cobalt: 22-24%, sulfur: 0.005-0.015%, phosphorus: 0.015-0.045%, and the balance is iron and inevitable impurities; and a working layer, and the chemical components and mass percentages of the working layer are as follows: WC: 15-25%, X: 1.5-4.5%, and the balance of components and the proportion between the components are the same as those of the bottom layer, wherein the X is TiC particles coated with Ni on the surface. The method is used for preparing the coating, and compared with a conventional coating, can effectively improve the wear resistance and corrosion resistance of the coating, and prolong the service life of equipment.

The invention belongs to the field of medicines, and particularly relates to application of odd-carbon saturated medium and long-chain fatty acid in preparation of a medicine for treating polyglutamine diseases. Research results of the invention show that the heptadecanoic acid can significantly delay and inhibit the aggregation of polyglutamine (polyQ) disease proteins, and can significantly prolong the survival time of AM141 nematodes at the same time, and the prolonging effect is about 10%. Therefore, the heptadecanoic acid is completely possible to be used as a raw material to prepare related medicines, so as to treat polyQ diseases. In addition, the heptadecanoic acid is clear in component, low in price and easy to obtain, and is more beneficial to benefiting the public.

The invention discloses a composition with an anti-aging effect and a preparation method and application thereof, and belongs to the technical field of cosmetics. The composition is prepared by compounding a traditional Chinese medicine active component, a moisturizing and permeation promoting component and a repairing and anti-aging auxiliary component, and the traditional Chinese medicine active component is composed of three zymolytes and three fermentation extracts which are respectively prepared from six medicinal and edible traditional Chinese medicine raw materials through differentiated composite enzymolysis and probiotic anaerobic fermentation processes. The problems that traditional Chinese medicine extracts are low in transdermal absorption rate, poor in bioavailability and insufficient in cosmetic system stability are solved, active ingredients are small-molecularized through process optimization, a multi-target synergistic anti-aging system is formed by matching with functional components, the anti-aging and repairing composition has excellent anti-aging and repairing effects, physical and chemical stability and skin safety, and the anti-aging and repairing composition has a good application prospect. The composition is suitable for various skin types and can be widely applied to preparation of anti-aging repair cosmetics.