133results about How to "Fully distributed" patented technology

The invention discloses a laser-strengthened wear-resistant powder metallurgy valve seat, which relates to the technical field of powder metallurgy, and comprises a middle concave platform, a collecting hopper is arranged at the top of the middle concave platform, a mold charging barrel is arranged in the collecting hopper, and a plurality of round rods are fixedly connected between the inner wall of the collecting hopper and the outer wall of the mold charging barrel; and a detachable collecting frame is arranged at the bottom of the collecting hopper. Through the arranged die pressing mechanism and the pressing vibration mechanism, when the detachable upper die presses raw material powder in the die charging barrel, the die charging barrel can be synchronously driven to vibrate, so that the raw material powder in the die charging barrel is dispersed, and the uniformity and sufficiency of pressing are guaranteed; and meanwhile, under the vibration effect, overflowing raw materials can conveniently and rapidly fall into the collecting hopper from the edge of the top end of the mold charging barrel, and collection of overflowing raw material powder is accelerated.

The invention belongs to the field of gene engineering and biological treatment, and provides a hypoxia specific gene expression cassette, gram-negative bacteria containing the expression cassette and application of the gram-negative bacteria in preparation of tumor drugs. According to the invention, the forward hypoxia promoter and the reverse hyperxia promoter are reasonably designed, and appropriate survival essential genes are matched, so that the hypoxia specific gene expression cassette which is more efficient and safer is obtained. Gram-negative bacteria modified by the hypoxia specific gene expression cassette designed by the invention are low in overall mutation rate, and in a mouse in-vivo tumor model, more bacteria are distributed in tumors and the clearing speed in normal organs is higher.

The invention provides an offshore wind plant current collection network topology optimization method based on an improved grey wolf optimization algorithm, and the method comprises the steps: S1, obtaining basic data of an offshore wind plant, initializing the grey wolf algorithm, and generating an initial solution set; s2, adopting polar coordinates and a minimum spanning tree to optimize and expand the initial solution set; s3, optimizing a connection mode in each group; s4, executing the optimal connection of each group of fan combination; s5, performing optimal solution set exploration on the grey wolf algorithm by adopting an operator; s6, repeatedly executing until a preset maximum number of iterations is reached, and generating a topology model of the current collection system of the offshore wind plant; the method can improve the initial solution quality and the convergence efficiency, gives consideration to the global search capability and the local optimization precision, and achieves the quick and effective processing of geometric constraints.

The invention belongs to the technical field of computer-aided diagnosis, and particularly relates to a dynamic brain network feature learning method based on Mamba, which comprises the following steps of: performing data processing, including data collection, data preprocessing, dynamic function network sequence construction and state conversion sequence construction; performing sample enhancement by taking the processed data as sample data; constructing a Mama model comprising a linear embedding layer, a Mama layer, a linear mapping layer I, an activation function and a loss function as a classification model; training the Mama model by using the state conversion sequence, and optimizing hyper-parameters of the Mama model; and based on the trained Mama model, predicting the enhanced sample data, and determining a classification result of the sample data through a label output by the Mama model. According to the method, the relation hidden in the dynamic brain network state transition sequence can be efficiently captured, and high-precision classification of each brain network sequence is realized.

The invention discloses a switch cabinet arc welding device capable of achieving multi-station switching and a machining method, and relates to the technical field of welding devices.The switch cabinet arc welding device comprises a machining bed, a multi-station switching mechanism is arranged above the machining bed, and a turnover mechanism is arranged above the machining bed; the multi-station switching mechanism can utilize a plurality of stations to improve the welding efficiency of the switch cabinet, the multi-station switching mechanism comprises a fixing box, the bottom face of the fixing box is fixedly connected to the inner bottom wall of the machining bed, the turnover mechanism comprises a limiting unit, and the limiting unit is arranged above the machining bed. According to the switch cabinet arc welding device capable of achieving multi-station switching and the machining method, the rotating unit is arranged, the switch cabinet welded with one or more gaps can be rotated through the rotating unit, the multi-station switching mechanism is arranged, and the limiting unit and the rotating unit are matched with each other, so that the situation that when the device is used, the switch cabinet is damaged is avoided; and the welding efficiency is low due to the fact that the number of stations is small.

The invention discloses a warpage marking device, and relates to the technical field of glass substrate warpage detection, the warpage marking device comprises a detection equipment main body, the middle position of the detection equipment main body is fixedly connected with a detection table, a driving pneumatic cylinder is installed above the detection table, and the output shaft end of the driving pneumatic cylinder is provided with a detector; the detector is located at the eccentric position above the substrate main body, so that detection is not limited to the central area of the plate, the surface of the substrate main body can be completely covered, more accurate surface data feedback analysis is achieved, the surface integrity of the substrate main body can be evaluated more accurately, and meanwhile the detection accuracy is improved through dynamic adjustment of the detection area in the process. Different detection positions of the detector are increased while the irradiation range of the detector is reduced, so that each part of the substrate can be subjected to uniform and sufficient detection feedback, the problem that in a traditional method, light is excessively focused on a central area and detection of an edge area is insufficient is solved, and uniform distribution and comprehensive coverage of detection light are ensured.

The invention relates to a material for detecting a myasthenia gravis antibody as well as a preparation method and application of the material. The material for detecting the myasthenia gravis antibody comprises the following components: a myasthenia gravis antibody detection plate, a working solution, PBS (Phosphate Buffer Solution), a fluorescent secondary antibody and a mounting medium, wherein the myasthenia gravis antibody detection plate is formed by spotting hela cells containing MUSK, LRP4, Titin and RYR1 proteins on a modified glass slide. According to the invention, hela cells containing MUSK, LRP4, Titin and RYR1 proteins are applied on a modified glass slide, so that four proteins related to myasthenia gravis, namely MUSK, LRP4, Titin and RYR1, can be simultaneously detected on one detection platform, the time and sample size required by an experiment are reduced, and the efficient detection mode not only improves the operation convenience of the experiment, but also reduces the experiment cost, and is suitable for the detection of myasthenia gravis related to myasthenia gravis related to myasthenia gravis related to myasthenia gravis related to myasthenia gravis related to myasthenia gravis related to myasthenia gravis related to myasthenia gravis related to myasthenia gravis related to myasthenia gravis.

The present invention discloses a low-viscosity and high-strength cement-based grouting material and a preparation method thereof. The grouting material comprises the following components: 300-600 parts of a cementitious material having volcanic ash properties, 0.2-0.6 parts of a micro-nano coagulant, a water reducer of 0.25-2% of the mass of the cementitious material, and a water-cement ratio of 0.4-0.8. The cementitious material having volcanic ash properties comprises silicate cement and modified microbeads. The preparation method comprises the following steps: uniformly mixing the cementitious material having volcanic ash properties and the micro-nano coagulant. Then, a mixed solution formed by the water reducer and water is added, and the mixture is uniformly stirred to obtain the cement-based grouting material. The present invention reduces the water-cement ratio of cement slurry and ensures the strength of cement stone, while reducing the viscosity of cement slurry and improving injectability.

The utility model belongs to the technical field of copper-clad ceramic substrate cleaning, and particularly relates to a plate brushing machine for cleaning a copper-clad ceramic substrate, which comprises a casing, an inlet, an outlet and a partition plate, the partition plate divides the inside of the casing into a washing chamber, a wiping chamber and a drying chamber, and the inside of the washing chamber comprises a first conveying roller, a water pipe, a spray head and a brush roller. The first conveying roller, the water pipe and the brush roller are rotationally installed on the machine shell in the vertical direction, and a spray head is connected to the water pipe. A sponge roller is arranged in the wiping chamber and rotationally installed on the machine shell in the vertical direction. A second conveying roller and an electrical bar are arranged in the drying chamber, and the second conveying roller and the electrical bar are installed on the machine shell in the vertical direction; water outlets are formed in the bottoms of the washing chamber, the wiping chamber and the drying chamber; compared with the prior art, the cleaning device can clean the two faces of the copper-clad ceramic substrate at the same time, only one speed reducer is adopted for driving, the cleaning efficiency is improved, and meanwhile energy is saved.

The invention relates to the technical field of stirring barrels, and discloses a mining dehydration stirring barrel and a use method thereof, the mining dehydration stirring barrel comprises a stirring barrel and a cylindrical filter plate fixedly connected to the inner wall of the bottom of the stirring barrel; a mineral stirring mechanism and a liquid stirring mechanism are arranged on the stirring barrel, the mineral stirring mechanism comprises a first mineral stirring assembly and a second mineral stirring assembly, the first mineral stirring assembly comprises a reciprocating lead screw rotationally connected to the inner wall of the bottom of the stirring barrel, and the top of the reciprocating lead screw rotationally extends out of the stirring barrel; and a lifting block is in threaded connection with the outer wall of the lifting block. By arranging the mineral stirring mechanism, the problems that in the using process of an existing mining dewatering stirring barrel, due to the fact that the position of a stirring paddle is fixed and is not convenient to adjust in time, ore is not convenient to fully stir in the areas, ore pulp mixing is not uniform, ore pulp layering and sedimentation occur, the ore and water cannot make full contact and be separated, and the stirring effect is poor are solved. The dehydration efficiency and the dehydration quality are reduced.

This utility model discloses a heat-dissipating electric tricycle brake disc, including a brake drum and a circular brake disc disposed on the circular outer wall of the left end of the brake drum. The circular brake disc and the brake drum are fixedly connected by welding. The brake drum is circular in shape and has an opening at the left end. The circular brake disc is flush with the outer wall of the left end of the brake drum. Multiple heat dissipation holes are equidistantly arranged inside the circular brake disc near the edge. By adding multiple airflow-type heat dissipation devices equidistantly on the outer wall of the right end of the brake drum, when the brake drum rotates clockwise, the air intake horn collects air and sends it into the airflow compression hood. The airflow is blown onto the outer wall of the brake drum and the circular brake disc through the exhaust hole of the compression hood or the flat exhaust hood and the exhaust port of the exhaust hood, which quickly dissipates heat and avoids high temperature affecting braking performance. The airflow compression hood has an adaptable structure and does not take up too much space. The flat exhaust hood, together with the exhaust port, increases the heat dissipation coverage area and makes the heat dissipation more even and sufficient.

The invention relates to the technical field of illumination, and discloses a laser chip packaging material and a preparation method and application thereof. The laser chip packaging material comprises the following raw materials in parts by weight: 40-60 parts of powder, 0.2-0.3 part of a sintering modifier, 7-8 parts of a sintering aid, 15-25 parts of a binder, 20-30 parts of deionized water, 1-2 parts of a dispersant, 0.6-1.2 parts of a plasticizer and 0.2-0.6 part of a defoaming agent, wherein the powder material is prepared from aluminum oxide hollow spheres, Al2O3, Y2O3, CeO2, ZnO and ZrO2. The aluminum oxide hollow sphere is matched with the component with the fluorescence effect, the color of light can be adjusted, the emitting angle of the light can be adjusted, the light emitting efficiency is effectively improved, and the laser chip can work under the high-power condition and can be well applied to the fields of high-pole illumination and the like.

The present invention discloses a semiconductor lead frame processing equipment for an automobile interactive taillight and its products, which relate to the field of semiconductor technology, including a workbench unit, an integrated processing unit, and a plurality of integrated processing units are arranged on the top of the operating table. The downward movement of the push-out bottom plate inside the integrated processing unit completes the downward positioning of the coil inside the positioning frame and limits the downward pressure of the electric test pin pre-welded on the top of the coil, thereby reducing the offset of the electric test pin during the stamping process of the stamping block, and the pressing of the stamping block and the electric test pin will form an injection channel that is connected to the construction cavity, thereby completing the stamping modeling, that is, the coil on the top surface of the middle sleeve hollow block, the push-out bottom plate, the stamping block, the surrounding plate, and the bearing plate forms a sealed mold cavity between the construction cavity and the positioning frame, so that the side wall of the reaction cup and the mouth of the reaction cup are injection molded inside the mold cavity, thereby reducing the time consumption of re-clamping and re-injection molding to form the side wall of the reaction cup and the mouth of the reaction cup after stamping.

The present invention relates to the technical field of cooking wine fermentation, and specifically to a production process of zero-additive fermented cooking wine, which is produced using a fermentation device; wherein the fermentation device comprises: a fermentation barrel, the bottom of which is fixedly connected to a fermentation funnel; a yeast discharge mechanism, the yeast discharge mechanism comprises a plurality of discharge rings fixedly connected to the inner wall of the fermentation barrel, each discharge ring being away from the outer peripheral surface of the fermentation barrel and having a plurality of groups of row holes in an annular array; a stirring and mixing mechanism, the stirring and mixing mechanism comprising a diversion barrel rotatably connected to the inside of the fermentation barrel. Yeast can be evenly discharged into various positions in the fermentation barrel through the discharge ring and the row holes in the yeast discharge mechanism. Since the discharge ring is in a circular ring shape, this design can ensure that the yeast is evenly distributed in the annular pipe, and since the row holes are located at both ends of the discharge ring, the yeast can be more evenly distributed to different positions in the malt koji, thereby achieving a more comprehensive distribution of the yeast in the malt koji.

The invention discloses a liver-targeting nitric oxide donor compound and application thereof. The compound is a derivative of 5-isosorbide mononitrate, and can be enriched in the liver and release nitric oxide. Compared with 5-isosorbide mononitrate, the compound disclosed by the invention is easier to metabolize after primary hepatocyte incubation of mice, effectively releases effector molecules such as nitric oxide and the like, shows good liver targeting, is expected to play a better effect in treatment of liver-related diseases, and improves the clinical application value of drugs.

The invention relates to the technical field of basalt fiber yarn production, in particular to a basalt fiber yarn continuous dyeing device which comprises a first dyeing main body, a first drying main body, a second dyeing main body, an extrusion main body, a second drying main body and a supporting base. The second dyeing main body is arranged on the outer side of the tail end of the first dyeing main body, the first drying main body is located between the first dyeing main body and the second dyeing main body, the second drying main body is arranged at the tail end of the second dyeing main body, and the first dyeing main body and the second dyeing main body are the same in structure and the first drying main body and the second drying main body are the same in structure. By arranging the first dyeing main body and the second dyeing main body, basalt fibers can be subjected to secondary dyeing treatment, so that the dyeing effect is good.

The utility model belongs to the technical field of preserved meat pickling, and particularly relates to a preserved meat pickling device which comprises a rack, a tank body is fixedly connected between the inner walls of the two sides of the machine frame, two fixing plates are fixedly connected to the top end of the tank body, a hollow pipe is fixedly connected between the two fixing plates, a plurality of spraying pipes are connected to the hollow pipe, bottom end openings of the spraying pipes are formed in the tank body, two supporting rods are fixedly connected to the tank body, and a barrel is fixedly connected to the two supporting rods in a matched mode. A first motor is mounted at the top of the barrel body, the output end of the first motor is connected with a rotating rod, and a plurality of stirring blades are fixed on the circumferential surface of the rotating rod; when preserved meat is pickled, pickling materials are uniformly sprayed and fresh meat in the tank body is turned, thrown and stirred at the same time, so that the pickling materials and the fresh meat can be fully and uniformly mixed, and the pickling materials are uniformly distributed on the fresh meat, so that the pickling effect is improved, and the taste, color and flavor of the pickled preserved meat are uniform.

The utility model discloses a blending device for processing a selenium-enriched bio-organic fertilizer, and relates to the technical field of agriculture. The device comprises a rectangular bottom plate, wherein a grinding mechanism, a stirring mechanism and a collecting mechanism are arranged on the rectangular bottom plate; the grinding mechanism comprises a driving assembly, a grinding assembly and an adjusting assembly, the driving assembly comprises a stirring box arranged above the rectangular bottom plate, a motor supporting plate is fixedly installed at the top end of the stirring box, a double-shaft motor is fixedly installed at the top end of the motor supporting plate, and a guide plate is fixedly installed at the top end of the stirring box; and a grinding box is fixedly mounted at the top end of the guide plate. Through the arrangement of the grinding mechanism, the problems that raw material particles which are not ground are inconsistent in size and shape, so that uniform mixing is difficult to realize in the mixing process, components are unbalanced, the quality is fluctuated, and the stability and the consistency of products are influenced are solved.

The invention relates to the technical field of electrical equipment, and discloses an explosion-proof protection box for electrical equipment, comprising a box body and a top cover, and also comprising a fixing device, a cooling device, a fire extinguishing device and a pressure reducing device; the fixing device comprises a fixing plate, a bidirectional screw, a movable plate, a rotating plate, a fixing block, a bevel gear set and an elastic telescopic plate, the fixing plate is fixedly connected to the inner wall of the box body, the bidirectional screw is rotatably connected to the inner wall of the fixing plate, the movable plate is threadedly connected to the surface of the bidirectional screw, the rotating plate is rotatably connected to the surface of the movable plate, the fixed plate is rotatably connected to the surface of the rotating plate, the bevel gear set is fixedly connected to the right end of the bidirectional screw, and the elastic telescopic plate is fixedly connected to the surface of the fixing block; the cooling device is arranged on the inner wall of the elastic telescopic plate, and the fire extinguishing device is arranged on the inner wall of the box body. The invention has the function of clamping and fixing the electrical equipment.

The utility model relates to the technical field of film waste recovery, in particular to a film waste recovery device which comprises a heating device, a material placing table is fixedly installed on the ground on one side of the heating device, a material conveying pipe is installed on the other side of the heating device in a communicated mode, and an extrusion pipe is installed at the end, away from the heating device, of the material conveying pipe in a communicated mode. A water cooling tank is movably placed on the ground below the extrusion pipe, a material guide table is fixedly installed on the ground on the side, away from the extrusion pipe, of the water cooling tank, and a chopping device is fixedly installed on the ground on the side, away from the water cooling tank, of the material guide table. The injection groove is communicated with the top of the heating device; and a stirring frame is rotationally mounted in the heating device below the material injection groove. According to the utility model, the problem that the product quality and the production efficiency are influenced by non-uniform mixing of additive powder and waste film materials in the traditional process is solved.

The present invention discloses a preparation method and application of a highly dispersed cobalt-modified nitrogen-sulfur co-doped hierarchical porous carbon composite material, belonging to the technical field of electrocatalytic materials. The preparation method comprises the following steps: sulfation-modifying chitosan to obtain positioned sulfonated chitosan; adding the positioned sulfonated chitosan to a Ca-containing 2+ and Co 2+ The method comprises the following steps: stirring the mixture evenly in a solution of 200 μm and 30 μm, aging the mixture to obtain a positioning chitosan sulfonate mixture; calcining the positioning chitosan sulfonate mixture under an inert atmosphere, and acid leaching the calcined product to obtain the highly dispersed cobalt-modified nitrogen-sulfur co-doped hierarchical porous carbon composite material. The highly dispersed cobalt-modified nitrogen-sulfur co-doped hierarchical porous carbon composite material provided by the present invention has a simple preparation process, good electrocatalytic activity and stability, and can be used as an electrocatalyst for secondary zinc-air batteries.

The utility model relates to a novel intelligent fragrance box which is arranged in a vehicle and comprises an upper shell and a lower shell, an upper cover assembly is arranged on the upper portion of the upper shell, a jumping cavity is formed in the upper shell, a counterweight assembly is arranged in the jumping cavity, magnetic suspension mechanisms are arranged in the counterweight assembly and the upper shell, and a perfume assembly is arranged in the lower shell. Fragrance conveying channels are arranged in the lower shell, the upper shell and the upper cover assembly, and in the running process of the vehicle, the balance weight assembly loses balance between the gravity of the balance weight assembly and magnetic thrust of the magnetic suspension mechanism due to vibration of the vehicle, and the balance weight assembly jumps up and down to drive fragrance in the fragrance conveying channels to be exhausted upwards. The product is high in magnetic levitation jumping sensitivity, and is suitable for middle and high-end vehicle types with good damping systems. The counterweight assembly of the product is not contacted with the wall of the jumping cavity, almost no friction is generated, mechanical noise is not generated, and the product is more durable and longer in service life. The magnetic suspension mechanism is used, the structure and the technology are simple, assembling is easy, and batch production is achieved.

The invention discloses an integrated water-fertilizer irrigation device for rice, which belongs to the field of agricultural planting. The device comprises a frame, a support plate fixedly connected to the lower end of the frame, and a wheel body rotatably connected to one side of the support plate. A water-fertilizer mixing unit is arranged at the upper end of the frame, and the water-fertilizer mixing unit is used to transport irrigation water and liquid fertilizer into a water-fertilizer mixing component, and the water-fertilizer mixing component is used to directly mix the liquid fertilizer with the irrigation water. The irrigation water in the rotary joint and the liquid fertilizer in the fertilizer pump can be directly mixed quickly and evenly through a static mixing element, so that the fertilizer is fully dispersed and evenly distributed in the irrigation water, and the efficiency and accuracy of fertilization are improved. In this way, the rotary joint is directly connected to an irrigation water supply pipe, and water-fertilizer integrated irrigation can be directly realized by real-time water supply. The device does not need to carry a water tank and a stirring and mixing box, which improves the flexibility of the device and the stability of the device in the field.

The utility model discloses a yeast turning device for soy sauce aspergillus culture. According to the technical key points, the device comprises a fermentation box used for containing aspergillus, a supporting mechanism used for supporting the fermentation box and a driving mechanism are arranged below the fermentation box, the driving mechanism comprises a motor and a transmission shaft connected with an output shaft of the motor, and a shaft sleeve used for being connected with the transmission shaft in a clamped mode is arranged in the fermentation box; and a stirring piece for stirring aspergillus is arranged on the shaft sleeve. The device has the advantages that the eccentric wheel drives the ejector rod to move upwards, so that the fermentation box generates intermittent vibration, the structure of an aspergillus mass becomes loose, internal heat can be dissipated during fermentation, the aspergillus mass is kept in a temperature environment suitable for fermentation, and the fermentation quality is improved; and the stirring piece can stir the aspergillus at the bottom to the surface, so that the effect of internal and external exchange of the aspergillus is realized, the heat of the internal aspergillus is fully dissipated, and the aspergillus with higher quality is prepared.

The invention belongs to the technical field of metal electrodeposition, and particularly relates to a device and a method for testing in-situ XRD (X-Ray Diffraction) data in metal electrodeposition. Comprising a box body, the bottom of the box body is closed, an anode plate is placed at the bottom end in the box body, and the top of the box body is open; a pair of supporting rods is horizontally mounted in the box body, a diaphragm is placed above the supporting rods, a cathode screen plate is placed above the diaphragm, and electrolyte in the box body is in contact with the diaphragm but is not higher than the diaphragm; according to the invention, effective XRD diffraction data can be measured while electro-deposition and XRD testing are carried out at the same time; according to the invention, it can be ensured that the unit area density is large enough to obtain XRD data, electrolyte can be ensured to be fully distributed among meshes to facilitate electrodeposition, and the test error is comprehensively reduced; the device is simple to assemble, easy to operate and low in cost, and can realize rapid switching and connection between in-situ testing and common testing.

The utility model discloses a feed processing mixing device which comprises a device main body and a bearing plate, the top of the device main body is fixedly connected with a driving motor, the lower side of the driving motor is fixedly connected with a rotating rod, the outside of the rotating rod is fixedly connected with a stirring rod, and the outside of the device main body is fixedly connected with a clamping piece. A through hole is formed in the outer portion of the bearing plate, a limiting ring is fixedly connected to the inner side of the device body, the bearing plate abuts against the limiting ring, a fixing rod is fixedly connected to the outer portion of the rotating rod, an abutting rod is fixedly connected to the upper side of the fixing rod, and a vibrating mechanism is installed on the upper side of the bearing plate. According to the device, the clamping piece, the limiting ring and the abutting rod are arranged at the bottom of the rotating rod, the bearing plate is arranged in a sleeving mode, the bearing plate repeatedly ascends and descends at different positions during stirring, meanwhile, the vibrating mechanism installed on the upper side of the bearing plate is matched with the stirring rod, a multi-dimensional stirring mode is formed, lumps can be effectively beaten, materials are evenly distributed, and feed raw materials with different granularities are fully mixed; the stirring effect is greatly improved.

The utility model discloses an ice compress face mask with good adhesion, which comprises a face mask body, two inner linings, two extruded air bags and a fixing piece. The face mask body is suitable for covering the lower part of the human face. The two inner linings are respectively arranged on the left and right sides of the inner surface of the face mask body to define two accommodation grids for placing ice blocks on the left and right sides of the inner surface of the face mask body. The upper end of each accommodation grid is formed as an open end. The two extruded air bags are respectively arranged on the inner surface of the face mask body and located in the two accommodation grids. After being inflated, the air bags expand to extrude the ice blocks in the accommodation grids towards the human face. The fixing piece is arranged on the two sides of the face mask body to fix the face mask body on the face of a patient. The ice compress face mask with the unique design has good adhesion, uniform distribution of ice blocks, adjustable ice compress pressure and stable fixation.

The invention discloses a nicotine sensory quality evaluation method, and relates to the technical field of tobacco and tobacco product sensory quality evaluation, and the nicotine sensory quality evaluation method comprises the following steps: mixing an organic acid, a solvent and nicotine to obtain an evaluation sample; and carrying out sensory quality evaluation on the evaluation sample. The organic acid is introduced, and the nicotine is combined with the organic acid, so that part of free nicotine is converted into protic nicotine. Compared with free nicotine, the protic nicotine has lower volatility, can be more distributed in a liquid phase in aerosol, and reduces deposition in the throat, so that the irritation of nicotine to the oral cavity and the nasal cavity of sensory quality evaluation personnel is reduced, the influence on the body of the evaluation personnel is reduced, and the accuracy of sensory quality evaluation is improved.

The invention discloses a hollow tire-shaped carbon material composite transition metal sulfur selenide electrode material, which comprises a carbon skeleton and a transition metal sulfur selenide nanosheet material, the carbon skeleton is derived from aspergillus niger spores and has a three-dimensional hollow tire-shaped structure, the transition metal sulfur selenide nanosheet material is loaded on the carbon skeleton, and the outer layer of the nanosheet material is coated with a carbon layer; the electrode material has a chemical composition represented by ANDC (at) MSSe (at) C, ANDC is a hollow tire-shaped carbon skeleton derived from Aspergillus niger, and M is a metal element Sn, Mo or W. The electrode material disclosed by the invention has relatively high specific capacity, still has good retention performance under 2000 cycles, shows relatively good electrochemical performance with stable cycle, and still has very good structural stability and long cycle life under an ultrahigh rate. The preparation method is low in raw material cost and low in energy consumption, reaction conditions are easier to realize, commercial application is facilitated, and the preparation method has a huge application prospect in sodium ion batteries.

This utility model provides a multifunctional sandbox for casting new energy aluminum alloy parts, belonging to the field of multifunctional sandboxes. It includes an outer casing with an assembly assembly inside the front side and heat dissipation assemblies on both sides. When the casting sandbox needs to be installed separately, it is inserted rearward into a slot. Twisting the knob rotates the first bevel gear connected to it, which in turn rotates the second bevel gears on both sides. Before use, the mounting plate with the fan is aligned with the slot. The insert is pulled outward, moving it in and out of the slot, causing the side plate to slide within the side slot. The telescopic rod and spring are compressed to retract, and the mounting plate is inserted into the slot from front to back. Releasing the tension on the insert allows the telescopic rod and spring to push the side plate, causing the insert to insert into the aligned slot, thus completing the fan installation. This effectively dissipates heat generated during the casting process of the sandbox, improving the equipment's heat dissipation effect.