158results about How to "Good lifting effect" patented technology

The invention relates to the technical field of medical detection, and particularly discloses a colon polyp target detection method and system based on improved YOLOv8, and the method comprises the steps: obtaining an image data set of colon polyp, carrying out the preprocessing of the image data set, and dividing the preprocessed image data set into a training set, a verification set and a test set; an improved detection model is built, a first attention mechanism module is embedded in a C2f module of a network structure part of a basic model, a second attention mechanism module is embedded in a C2f module of another network structure part, a training set is input into the improved model for iterative training, and a detection result is obtained; and performing performance evaluation on the trained model based on the verification set to obtain an optimized colon polyp target inspection model. And inputting the test set into the colon polyp target inspection model to obtain a colon polyp target inspection result. The method improves the detection precision of the colon polyp target with small target detection and fuzzy boundary.

The invention relates to an anti-tear and anti-deformation cashmere blended fabric and a preparation method thereof. The fabric comprises an inner layer, an anti-tear layer and a surface layer which are arranged in sequence, the anti-tearing layer comprises a first supporting layer and a second supporting layer which are correspondingly arranged on the surface layer and the inner layer, concave sections and hot-pressing protruding sections are alternately arranged on the first supporting layer and the second supporting layer, and the concave sections and the hot-pressing protruding sections on the first supporting layer and the second supporting layer are symmetrically arranged. Placing cavities are formed between the concave sections of the first supporting layer and the second supporting layer, and an anti-tearing piece is arranged between the interiors of every two adjacent placing cavities. The anti-tearing layer is arranged between the inner layer and the surface layer, so that the anti-deformation effect, the anti-tearing effect and the down-proof effect of the fabric are improved, and the fabric is not prone to deformation after being washed with water for multiple times or under the action of external force, can still keep a good shape, is not prone to tearing, is more durable, is good in down-proof effect and can be used as the fabric of the down jacket.

The invention relates to the technical field of oil and gas well exploitation, in particular to a jet flow drainage device in a deep well gas production pipe column and a using method. According to the technical scheme, a pressure-controlled switch jet suction pump and a reverse circulation drainage pump are connected and lowered into an oil pipe through a small-diameter oil pipe, the pressure-controlled switch jet suction pump is located on the upper middle portion of an oil-gas well, the reverse circulation drainage pump is located on the lower portion of the oil-gas well, a packer is installed below the reverse circulation drainage pump, and a check valve is installed at the bottom of the reverse circulation drainage pump; high-pressure gas is injected into the small-diameter oil pipe, water in a pipe column on the upper portion of the pressure-controlled switch jet flow suction pump is discharged, and after emptying, the sliding sleeve moves to close the mixed liquid outlet; then high-pressure gas is injected into an annular space between a casing pipe and an oil pipe, water in a pipe column on the upper portion of a reverse circulation drainage pump is drained, liquid in the pipe column is lifted through multi-stage relay jet flow, well bottom accumulated water and water stored in the pipe column are drained to the ground, the well bottom back pressure is effectively reduced, water blocking and water locking are relieved, and the gas well productivity is recovered.

The invention discloses a universal self-supervised learning Raman spectrum noise reduction method, which comprises the following steps of: 1, acquiring Raman data; step 2, preprocessing the Raman data, removing a baseline from the Raman data by using an adaptive iterative reweighted penalty least square method, and standardizing a spectrum after baseline removal to obtain preprocessed spectrum data; step 3, processing the preprocessed spectral data by using a down-sampling strategy H (.) to obtain two sub-spectrum sets h1 (.) and h2 (.) with independent noise, each sub-spectrum set comprising 10 sub-spectrums; and step 4, inputting the preprocessed spectrum data and the corresponding two sub-spectrum sets into a U-Net network f theta (.) to obtain a spectrum after noise reduction processing. The noise reduction method can carry out good noise reduction processing on various Raman data, and the self-supervised learning method does not need a complex long-time learning process.

The invention relates to the technical field of crane control, in particular to an intelligent tower crane anti-collision accurate hoisting system based on multi-sensor fusion, which comprises a data acquisition module, a data processing module, a safety early warning module, a control execution module, a data processing module, a data processing module and a control module, an alarm module electrically connected with the safety early warning module and the data processing module and used for receiving the alarm signal sent by the safety early warning module; a hoisting control instruction is generated based on the alarm signal and the real-time three-dimensional position coordinates of the hoisted object sent by the data processing module; according to the method, the lifting control instruction is executed, the lifting arm angle, the rotation angle and the lifting height of the tower crane are adjusted, accurate lifting and anti-collision control are achieved, and the safety, accuracy and efficiency of the tower crane are comprehensively improved through organic combination of advanced technologies such as multi-sensor fusion, an intelligent algorithm and self-adaptive control.

The invention belongs to the technical field of battery positive electrode preparation, and particularly relates to a mixed coating coated nickel-rich layered oxide positive electrode and application thereof. The mixed coating coated nickel-rich layered oxide positive electrode is an NCM system positive electrode material, and the proportion of a Ni material in an NCM ternary system is greater than or equal to 92 wt%; the ratio content of Ni of the nickel-rich layered oxide positive electrode coated with the mixed coating in three elements of Ni, Co and Mn is greater than or equal to 92 mol%; and the nickel-rich layered oxide positive electrode coated with the mixed coating is coated with Li3PO4 and / or Li3BO3 and / or LiNbO3. The positive electrode material provided by the invention can effectively reduce the space charge layer effect and interface side reaction between the positive electrode and the electrolyte, the lithium ion migration efficiency is high, and the cycle performance of the assembled battery is good.

The invention provides a preparation method of calcium-modified ferrihydrite and application of the calcium-modified ferrihydrite in improvement of a soil structure, and belongs to the technical field of soil structure improvement. The preparation method of the modified ferrihydrite comprises the following steps: gradually adding a sodium hydroxide solution into a ferric trichloride solution, and stirring and mixing until the pH value of a suspension reaches neutral; aging the suspension at room temperature for 12 hours, centrifuging to remove supernate, and washing the synthesized ferrihydrite with pure water for 2-3 times; then adding a calcium chloride solution for salt washing for 2-3 times so as to fully replace sodium ions on the surface of ferrihydrite into calcium ions; and washing with pure water for 2-3 times to obtain the calcium modified ferrihydrite. The calcium modified ferrihydrite provided by the invention eliminates the influence of dispersive sodium ions or potassium ions in ferrihydrite synthesized by a traditional method, is a nanoscale weak crystalline mineral, has the effect of rapidly improving the stability of soil aggregates, can rapidly aggregate soil particles after being applied to soil, effectively enhances the structural stability of the soil, and improves the soil quality. Therefore, good materials and means can be provided for soil structure improvement.

The invention discloses a preparation method and application of a polyamide composite nanofiltration membrane containing a graphdiyne middle layer, and belongs to the technical field of membrane separation. Comprising a porous substrate, a graphdiyne middle layer and a polyamide layer. The graphdiyne is selected from graphdiyne, graphdiyne, hydrogen-substituted graphdiyne and other graphdiyne derivatives. The specific preparation method comprises the following steps: carrying out suction filtration on graphdiyne dispersion liquid to a porous substrate, respectively dipping the graphdiyne dispersion liquid in a water phase and an oil phase, carrying out interfacial polymerization to generate a polyamide membrane, and finally, drying the membrane in a constant-temperature and constant-humidity drying oven to obtain the polyamide composite nanofiltration membrane containing the graphdiyne middle layer. The preparation method disclosed by the invention is simple and efficient, and the prepared composite membrane can effectively intercept divalent salt and organic matters in water and has excellent water permeability, ion separation and antibiotic desalination effects.

The invention discloses a lightning protection device for power supply grid protection, relates to the technical field of lightning protection equipment, solves the technical problem of inconvenience in lifting, and comprises a base, a mounting plate is rotatably mounted on the base, a lightning rod is mounted at one end, away from the base, of the mounting plate, and a second pull rope is fixed at one end, away from the lightning rod, of the mounting plate. The base is provided with a lifting assembly used for lifting the lightning rod. The lifting assembly comprises two first lifting rotating plates rotationally installed on the base, second lifting rotating plates with connecting plates are rotationally installed at the ends, away from the base, of the first lifting rotating plates, and sliding grooves are formed in the sides, close to the first lifting rotating plates, of the base; the lightning rod is convenient to lift and mount, convenient to mount, dismount and maintain, the lifting capability of the device is improved, the working efficiency of mounting and dismounting of the device is improved, and the working efficiency of maintaining of the device is improved.

In order to overcome the defects in the prior art, the invention provides a preparation method of a redox electrode for an all-iron flow battery, and the preparation method comprises the following steps: step 1, pretreating a carbon electrode to obtain a pretreated carbon electrode; step 2, preparing a metal-carbon load; step 3, dissolving the metal-carbon load in a solvent to obtain a treatment solution; 4, immersing the pretreated carbon electrode in the treating fluid, and controlling the loading capacity of the metal-carbon load on the carbon electrode to be 3mg / cm < 2 >; and step 5, taking out the carbon electrode loaded with the metal-carbon load, and drying to obtain the redox electrode for the total iron flow battery. According to the redox electrode for the total iron flow battery, the metal-carbon material serves as an electrode load, more reaction sites can be provided for the electrode, the prepared electrode is high in catalytic activity, and the redox activity of the electrode is remarkably improved.

The invention discloses a hand-care detergent as well as a preparation method and application thereof. The hand-care detergent comprises the following components: sodium fatty acid methyl ester sulfonate, sodium linear alkyl benzene sulfonate and sodium alcohol ether sulphate. The formula system of the hand-care detergent is in a low-irritation state, and the hand-care effect is achieved while the decontamination effect of the detergent is guaranteed.

The invention belongs to the technical field of sustained-release microcapsules, and particularly discloses a ganoderma triterpenoid sustained-release microcapsule and a preparation method thereof.Bovine serum albumin and octenyl succinic anhydride modified starch are selected to prepare a Maillard product through a carbonyl ammonia condensation method to serve as a wall material, and a core material ganoderma triterpenoid is well wrapped in the wall material; the Maillard reaction product and the ganoderma triterpenoid are crosslinked, the structure of the freeze-dried microcapsule is not damaged, and the prepared granular microcapsule is complete in structure, high in embedding rate and good in stability. The sustained release performance of the ganoderma triterpenoids as an embedding material is improved, the water solubility of the ganoderma triterpenoids is improved, the dissolution speed and the intestinal mucosa permeability of the ganoderma triterpenoids are improved through conjugation change of polymer characteristics, the retention time is prolonged through biological adhesion, the oral bioavailability of the ganoderma triterpenoids is improved, and the bioavailability of the ganoderma triterpenoids is improved. The human body absorption and utilization degree of the ganoderma triterpenoids can be obviously improved.

The invention provides a solid-state electrolyte membrane and a preparation method thereof and a lithium ion battery, the solid-state electrolyte membrane comprises a first membrane layer and a second membrane layer which are laminated, the first membrane layer is made of a first polymer and a lithium salt; the material of the second film layer comprises an inorganic ceramic filler, a second polymer and cellulose; wherein the cellulose comprises one or more of ethyl cellulose and propyl cellulose; the first polymer and the second polymer are respectively and independently selected from one or more of PVDF (Polyvinylidene Fluoride) and PVDF-HFP (Polyvinylidene Fluoride-Hexafluoropropylene). The present application aims to provide a solid electrolyte membrane having high ionic conductivity.

The utility model relates to the field of crane mounting structures, in particular to an auxiliary mounting tool for a bolt tensioner, which comprises a lifting module, a top module and a bottom bracing module, the detachable modular design is adopted, the lifting module, the top module and the bottom supporting module can be independently disassembled, assembled and transferred, the size is small, the portable degree is high, the difficulty that a tool is transferred into an inner platform of a cylinder is reduced to a great extent, and the assembling procedure is simple; the overall size of the lifting device can meet the requirement for smooth movement of a platform in a cylinder, the lifting device is suitable for a narrow space and a complex terrain in the cylinder, the passing rate is high, the operation convenience is high, one person can conduct operation of transferring, locking and lifting functions, the space structure in the structure provides the large-angle condition for constructors to use ratchet wrenches, and the construction efficiency is improved. The problem that the bolt tensioner cannot be conveniently used and transferred under the limited space is solved.

The invention discloses an SRAF rule construction method and device and a computer readable storage medium. The construction method comprises the steps that a test pattern is designed; establishing a photoetching model; and according to the test pattern and the photoetching model, constructing an optimal SRAF rule through a simulated annealing algorithm. And according to the test pattern and the photoetching model, constructing an optimal SRAF rule through a simulated annealing algorithm. The simulated annealing algorithm can obtain a better effect in the solution of the multi-extremum problem, and the SRAF rule is constructed through the simulated annealing algorithm, so that a better result can be obtained in the multi-extremum solution problem of the shape of the auxiliary graph and the distance between the auxiliary graph and the main graph, and the obtained SRAF rule has a better improvement effect on the process window of the main graph. Moreover, the method is higher in calculation efficiency and shorter in calculation time.

The invention discloses a method for optimizing key structure parameters of a deep well electric submersible pump based on performance simulation, and relates to the technical field of design optimization of electric submersible pumps, a three-dimensional geometric model of a deep well submersible centrifugal pump is built in advance, the three-dimensional geometric model comprises an impeller, a guide shell, a pump shaft, a pump shell, an upper connector, a lower connector and a full-flow-channel structure, and initial structure parameters are calibrated; and establishing a centrifugal pump simulation model based on a computational fluid dynamics technology, performing fluid domain extraction, grid division and grid independence verification on the three-dimensional geometric model, and setting fluid attributes, boundary conditions and a turbulence model. According to the method, a closed-loop iteration framework for simulation, optimization, evaluation and feedback is constructed by adopting a mode of coupling a computational fluid dynamics simulation technology and a genetic algorithm, the limitation of local parameter optimization in the prior art is broken through, systematic and collaborative optimization of key structure parameters of the submersible centrifugal pump is realized, and the method is suitable for large-scale popularization and application. And the efficiency of the optimization process and the final optimization effect are obviously improved.

The invention relates to a lifting ring tilting device and a top drive drilling system, the lifting ring tilting device comprises a rotating head, a fixing assembly, an oil cylinder assembly and two lifting rings, the two lifting rings are oppositely installed on the two sides of the rotating head, and the upper ends of the two lifting rings are rotationally connected with the rotating head; the fixing assembly is fixedly installed on the rotating head, and the oil cylinder assembly is fixedly installed on the fixing assembly, rotationally connected with the two lifting rings through the inclining assembly and used for driving the two lifting rings to incline. The tilting device has the beneficial effects that the structure is compact, the design is reasonable, the lifting capacity of the tilting device can be improved, and the problem that the boundary dimension of an existing tilting device is increased along with the increase of the bearing capacity is effectively solved.

The invention provides an aromatic hydrocarbon chemical synthesis process, which is characterized by comprising the following steps: mixing a certain amount of CO into a mixed gas of H2 and CO2 in a volume ratio of 1: (2-5) to serve as a reaction raw material gas, and reacting at the temperature of 60-80 DEG C under the action of a specific metal oxide and molecular sieve composite catalyst, controlling the feeding space velocity of the reaction raw materials to be 500-2400 mL / h.gcat, the reaction temperature to be 300-550 DEG C and the reaction pressure to be 2-6 Mpa, and carrying out catalytic conversion to obtain an aromatic chemical; according to the method, a certain amount of CO is doped into reaction raw material gas, and a specific metal oxide and molecular sieve composite catalyst is selected to catalyze conversion of H2 and CO2 into aromatic chemicals; compared with the reaction atmosphere of pure H2 and CO2, the doping of CO greatly enhances the concentration of oxygen vacancies on the surface of the metal oxide, so that the ability of the metal oxide to catalyze CO2 to hydrogen-containing C1 species is greatly enhanced, the catalytic conversion rate of CO2 is improved, and the selectivity of aromatic chemicals is finally improved.

The utility model discloses drilling processing equipment for automobile parts, and relates to the technical field of automobile part processing, the drilling processing equipment comprises a bottom plate, the bottom of the bottom plate is fixedly connected with a clamping mechanism, the top of the bottom plate is movably connected with the automobile parts, the top of the bottom plate is fixedly connected with a drilling mechanism, the clamping mechanism comprises two supporting plates, and the supporting plates are fixedly connected with the drilling mechanism. The tops of the two supporting plates are fixedly connected with the left and right positions of the bottom of the bottom plate. According to the drilling machining equipment for the automobile parts, the two-way threaded rod is made to rotate by starting the first motor, then the two clamping plates are driven to move inwards, certain compression can be generated when the drilling machining equipment is in contact with the automobile parts in cooperation with the multiple anti-skid pads, and then the drilling machining equipment is better attached to the automobile parts; meanwhile, after the non-slip mat is in contact with the automobile part, large friction can be generated, so that position deviation of the automobile part is prevented, and drilling can be better carried out.

The invention discloses an inorganic solid electrolyte ceramic material containing oxygen vacancies and a preparation method thereof, and belongs to the technical field of lithium ion batteries. Tantalum-doped lithium lanthanum zirconate (LLZTO) solid electrolyte powder with a garnet type cubic phase structure is prepared through a solid phase method, the LLZTO fine powder obtained through grinding is subjected to annealing treatment in a reducing atmosphere to obtain LLZTO fine powder containing oxygen vacancies, the powder is subjected to cold press molding after being subjected to ball milling and drying, and the electrolyte sheet containing the oxygen vacancies is obtained through high-temperature sintering in the reducing atmosphere. According to the present invention, the Ta-doped LLZO is synthesized, the lattice of the prepared solid electrolyte contains the oxygen vacancy through the two-time reduction, the oxygen vacancy defect can reduce the activation energy of the lithium ion transmitted along the crystal grain and the crystal boundary, and the rapid migration of the lithium ion on the surface of the electrolyte is promoted so as to improve the ionic conductivity of the electrolyte sheet.

Consisting of a flap-type aerodynamic surface on the wing(s) (2) above the fuselage (1) of an aircraft with control surfaces (5) of the wing (2), the length of the device in the wing span direction being greater than or equal to the mid-chord of the flap, and comprising a thrust propeller engine (4), converting it into a propulsive flapper (3).

The invention discloses a preparation method of a perovskite quantum dot two-dimensional array. Comprising the following steps: S1, preparing a precursor solution A; s2, synthesizing perovskite quantum dots; s3, centrifugally purifying the perovskite quantum dots once; s4, self-assembling perovskite quantum dots into a quantum dot two-dimensional array through light induction; and centrifugally purifying the perovskite quantum dot two-dimensional array once. Compared with traditional monodisperse perovskite quantum dots, the two-dimensional perovskite quantum dot array structure provides a more ordered and efficient path for charge transmission, energy loss in the transmission process is reduced, meanwhile, the ordered arrangement mode can enhance the stability of the structure to a certain extent, the influence of external factors on the optical performance is reduced, and the optical performance is improved. The unique structure is beneficial to improving the quantum yield of luminescence, the optical band gap can be more accurately regulated and controlled, and luminescence with specific wavelength is realized; the array structure enables the material to have better mechanical performance and adapt to more application scenes.

The utility model discloses a glass fiber reinforced plastic bracket which comprises a bracket body and a positioning groove, and a threaded rod is installed in the middle of the surface of one side of the bracket body. By adopting the butt joints, the butt joint grooves, the two-way screw rod and the threaded rod, in the actual use process, the butt joints and the butt joint grooves of different numbers can be assembled according to the different numbers of wires and cables needing to be lifted, so that the applicable number of the device is increased, and after the number is adjusted, the two-way screw rod and the two-way screw rod are assembled. The lifting height can be adjusted by rotating the threaded rod, then the distance between the clamping plates can be changed by rotating the two-way lead screw so as to adapt to fixing operation of wires and cables of different sizes, the device is used through cooperation of multiple sets of different structures, the types capable of being adjusted all day long are enriched, and the practicability is high. And therefore, the application range of the device is expanded, the overall practicability is effectively improved, and the lifting device has the advantages that the lifting amount is adjusted and controlled, the lifting effect is good, and the adjustable types are rich.

This utility model relates to the field of cosmetic medicine and discloses a suture for facial lifting, comprising: a suture body, wherein the suture body is provided with forward barbs and reverse barbs, a limiting head is slidably sleeved on the suture body, the reverse barbs are engaged with the limiting head, an elastic sheet is provided inside the limiting head, and the limiting head is engaged with the reverse barbs through the elastic sheet, wherein there are multiple reverse barbs, and the multiple reverse barbs are equally spaced. This utility model has the following advantages and effects: both the forward and reverse barbs have a lifting effect on human tissue, good stability, improved lifting effect on human tissue, effectively improved cosmetic effect, and convenient fixation of the end of the suture body, which can be achieved by simply cutting off the excess suture below the limiting head.

This application provides a method for preparing gallium oxide (GaO) with enhanced ultraviolet absorbance and a GaO material prepared according to this method. First, a GaO thin film capable of generating ultraviolet absorption is grown on a substrate by magnetron sputtering. The GaO thin film is then annealed. Next, a copper thin film is grown on the GaO thin film by magnetron sputtering, followed by rapid annealing, causing the copper film to crack into copper nanoparticles under heat. This preparation method utilizes copper nanoparticles to enhance the ultraviolet absorption performance of GaO. The process steps are simple and easy to operate, thus effectively reducing the preparation cost. Furthermore, the GaO material prepared by this method shows a significant improvement in ultraviolet absorbance.

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and aims to solve the problem of non-uniform display of the display panel. The display panel is provided with a fan-out area; the fan-out area comprises a first area and second areas located on the two opposite sides of the first area. The first area and the second area are arranged in the first direction; the display panel comprises a plurality of fan-out lines; the plurality of fan-out lines comprise a plurality of first-type fan-out lines and a plurality of second-type fan-out lines; the plurality of first-type fan-out lines are located in the first area, and the plurality of second-type fan-out lines are located in the second area; each first-type fan-out line in the plurality of first-type fan-out lines comprises a first winding part, and the size of the area occupied by the first winding part in the second direction is smaller than the line length of the first winding part; every two adjacent first fan-out lines in the first direction are arranged on different layers. In the thickness direction of the display panel, orthographic projections of the first winding parts of every two adjacent first fan-out lines on the plane where the display panel is located are at least partially overlapped.

The utility model relates to the field of lifting tables, and discloses a control stage mechanical lifting table convenient to adjust, which comprises a support plate and a table plate, the top of the support plate is fixedly connected with a mounting shell, the outside of the mounting shell is fixedly connected with a motor, the output end of the motor is fixedly connected with a worm, and the worm is fixedly connected with a worm. Fixing blocks are fixedly connected to the front end and the rear end of the top of the supporting plate, two connecting rods are rotatably connected to the close ends of the two fixing blocks, worm wheels are fixedly connected to the outer portions of the connecting rods, rotating rods are fixedly connected to the two ends of the connecting rods, and supporting columns are fixedly connected to the four corners of the bottom of the table plate. According to the lifting table, through mutual cooperation of the worm, the worm gear and other structures, the motor can drive the worm gear to rotate through the worm, then the table plate is lifted, the lifting effect is stable, different performance requirements are met, lifting is more stable through the buffering assembly, and the use safety of the lifting table is improved.

The utility model relates to a longitudinal beam lifting appliance device, which comprises a magnetic attraction block, a lifting appliance and a lifting appliance, the lifting ring is used for lifting the magnetic attraction block; the hanging ring is arranged on the magnetic attraction block; the anti-falling assembly is used for preventing the longitudinal beam from falling off; the anti-disengaging assembly is arranged under the magnetic attraction block and connected with the hanging ring. According to the longitudinal beam lifting appliance device, the longitudinal beam can be prevented from falling off or shaking while being tightly sucked, and the lifting effect is good.