18results about How to "Significant industrial application value" patented technology

The application relates to a human blood volume in-vitro calculation method based on a magnetic tracer, and relates to the fields of biomedical engineering and quantum sensing technology.The method comprises the following steps: obtaining blood samples of a subject before and after the subject is introduced with a known mass magnetic tracer as baseline blood samples and to-be-detected blood samples; performing homogenization pretreatment on the blood samples to prevent red blood cell sedimentation; collecting baseline magnetic signals and mixed magnetic signals by using high-sensitivity magnetic sensors, and obtaining net magnetic signals through differential operation; substituting the net magnetic signals into a homologous matrix standard curve to inversely calculate the tracer concentration; and calculating the blood volume according to the dilution law.The application adopts the magnetic tracer to replace the radioactive isotope, and combines the quantum magnetic sensing technology, so that the application has the advantages of no radioactivity, high safety, portability of equipment, low cost, repeatable measurement and the like, and is suitable for bed-side rapid detection of the blood volume.

The invention provides a global asset pricing method considering a cross-market overflow effect and heterogeneity adaptation, and the method comprises the steps: constructing a three-layer heterogeneous graph covering global macroscopic nodes, regional market nodes and individual share asset nodes, and achieving the multi-level message passing through a heterogeneous graph neural network; end-to-end modeling of nonlinear overflow effects among global markets, among large-class assets and among individual stocks is realized for the first time; by designing a feature embedding layer, an interaction adaptation layer and a normalization layer exclusive to the market, adaptive adaptation is carried out for system features, data distribution and pricing logic of different markets, and stable and accurate pricing of mature markets and emerging markets is realized; according to the method, global systematic risk information and regional specificity alpha information are effectively separated and deeply fused through a double-attention aggregation mechanism of a global attention branch and a local attention branch, so that the income prediction precision is improved, and the systematic risk exposure degree and a regional alpha score can be directly output.

The application discloses a semiconductor thin film deposition process intelligent recommendation system and method based on a knowledge graph, belongs to the technical field of semiconductor manufacturing processes, and comprises the following: a semiconductor thin film deposition process knowledge graph construction module; a prompt word template generation module: used for receiving process requirements and constraint conditions input by a user, performing semantic analysis on the process requirements and constraint conditions, filling the analysis results into a preset prompt word template, and outputting standardized instructions meeting the calling requirements of a large language model; and a large language model reasoning module: used for receiving the standardized instructions, performing semantic retrieval and logical reasoning on the standardized instructions within the constraint range of the semiconductor thin film deposition process knowledge graph, generating a plurality of candidate thin film deposition process schemes meeting process constraint conditions based on entity relationships and causal associations in the semiconductor thin film deposition process knowledge graph; and the application constructs a complete process recommendation solution and exhibits significant advantages in multiple aspects.

The application discloses a modified PAFC as well as a preparation method and application thereof, and belongs to the technical field of water treatment. The preparation method of the modified PAFC provided by the application comprises the following steps: S1, a pre-hydrolysis liquid is added dropwise into a liquid PAFC, and then stirring is continued; the pre-hydrolysis liquid has a pH of 4.5-5.5 and is a mixture of a silane coupling agent and an ethanol aqueous solution; and S2, the mixture obtained in step S1 is matured. The preparation method provided by the application can effectively improve the acid resistance of the obtained modified PAFC, simultaneously realizes efficient removal of pollutants and resource recovery, and simultaneously avoids industry pain points such as salt production in neutralization, secondary pollution and the like. The application further provides the modified PAFC prepared by the above preparation method and application thereof.

The application discloses a method for preparing semi-hydrated calcium sulfate whiskers by directional conversion of calcium-based components of waste incineration fly ash, and relates to the field of solid waste treatment. The application aims at the industry pain point of harmless disposal of waste incineration fly ash, and the core defect that the existing fly ash-based calcium sulfate whisker preparation technology cannot stably prepare high-purity high-aspect-ratio single-phase semi-hydrated calcium sulfate whiskers. Through a controllable process of "acid leaching calcium-precursor generation-ultrasonic assistance-hydrothermal conversion", the synergistic effect of harmless disposal and high-value utilization of waste incineration fly ash is realized, and the method has remarkable environmental benefits, economic benefits and industrial application value.

The utility model belongs to the technical field of tool structures, and relates to a tool structure for installing an external roller, which comprises fixed seats arranged at two ends of the roller, and the roller is rotatably connected with the fixed seats; the device further comprises a fixed end fixedly connected to one of the fixed seats, a motor bottom plate is connected to the side, away from the roller, of the fixed end, and the motor bottom plate is used for installing a motor; a pull rod is arranged between the motor bottom plate and the fixed end, one end of the pull rod is connected to the end, away from the fixed end, of the motor bottom plate, and the other end of the pull rod is connected to the top of the fixed end to form a cable-stayed structure. According to the utility model, through the innovative cable-stayed structure and the modular design, the base-free installation of the motor on the external roller is realized. According to the core scheme, an L-shaped combined structure of the fixed end and the motor bottom plate is adopted, a cable-stayed supporting system is formed in cooperation with the pull rod, and a complex base system needed for installation of a traditional roller motor is remarkably simplified.

The invention relates to a preparation method and application method of a copper-based catalyst for electrochemical CO2 reduction, and the preparation method of the copper-based catalyst for electrochemical CO2 reduction comprises the following steps: S100: obtaining copper powder, dissolving the copper powder in a solvent, and ultrasonically mixing uniformly to obtain a copper-based mixed solution; and S200, the copper-based mixed solution is transferred into a high-pressure kettle to be heated, after the temperature rises to the preset temperature, CO2 gas is introduced into the high-pressure kettle till the high-pressure kettle is in a supercritical state, constant-temperature reaction is conducted for 3-24 h, the high-pressure kettle is cooled to the room temperature, then centrifugation is conducted, solid at the bottom is taken, washing and drying are conducted, and the copper-based catalyst for electrochemical CO2 reduction is obtained.

The invention discloses a readable cone measuring tool, and aims to solve the problems that the fitting rate of a vertical shaft cone and a drum taper hole of a disc centrifuge is insufficient, and traditional measurement depends on experience. The tool is composed of a measuring sleeve, a set screw and a dial indicator, a conical through inner cavity is formed in the measuring sleeve and is in transition fit with a taper plug gauge (the single-side gap is 0.5-1 micrometer), radial positioning structures are arranged on the same sides of the two ends to fix the dial indicator, and a measuring rod is axially perpendicular to the inner cavity. When in use, the measuring sleeve is sleeved in the taper plug gauge for multi-angle zero calibration and then sleeved in the vertical shaft cone, and the taper angle error (the readable value is 1 [mu] m) is quantized through the reading difference of the upper and lower dial indicators, so that the angle of the machine tool grinding wheel is adjusted. The tool can control the cone tolerance of a part to be within the AT alpha 4 level, reduces personal errors, improves the measurement efficiency and precision, ensures that a vertical shaft and a rotary drum are accurately positioned and do not shake, enhances the balance effectiveness of the separator rotary drum and the reliability of a transmission system, realizes the interchangeability of the part, and is suitable for precision machining detection of similar conical mating parts.

The invention belongs to the field of liquid adhesive materials, and particularly relates to an adhesive material with reversible tensile universal adhesion as well as a preparation method and application of the adhesive material. The preparation method of the adhesive material comprises the following steps: S1, mixing deionized water and acidic polysaccharide with the weight-average molecular weight of 0.8-2 MDa, and stirring until the mixture is dissolved to obtain an acidic polysaccharide solution; s2, adding an inorganic metal salt into the acidic polysaccharide solution, and stirring until the inorganic metal salt is dissolved to obtain a precursor solution; and S3, adding concentrated hydrochloric acid into the precursor solution, stirring until the system is viscous, standing, and self-assembling, thereby obtaining the product, the addition amount of the concentrated hydrochloric acid is 0.1-0.325 wt% of the mass of the deionized water. The adhesive material prepared by the method has high energy dissipation efficiency and super-long reversible stretch rate, can effectively bear transient impact load caused by a high-speed moving target, provides stable adhesion, and is suitable for stable adhesion of various complex structure surfaces.

The application relates to a recombinant plasmid, a Pichia pastoris engineering strain and application. In order to solve the problems of high cost and poor scale expression effect in the industrial production of existing penicillin acylase, the application constructs a recombinant plasmid with an amino acid sequence as shown in SEQ ID NO. 1, and converts the recombinant plasmid into Pichia pastoris to obtain an engineering strain; the engineering strain is subjected to activation culture, shake flask seed culture, primary seed culture, secondary seed culture and fermentation culture, so that the scale fermentation production of the engineering strain and the high-efficiency expression of penicillin acylase are realized, and the enzyme activity is stable at 49900 U / L after 100h of fermentation. The engineering strain has excellent heterologous expression performance and scale fermentation adaptability, can significantly improve the production efficiency of penicillin acylase, reduce the production cost, provides a high-efficiency and stable biological catalysis tool for the industrial synthesis of beta-lactam antibiotics, and has important industrial application value.

The invention provides a preparation method of a solid-state fiber flexible battery, the solid-state fiber flexible battery and application, and relates to the field of flexible batteries. A coaxial wet spinning technology is innovatively introduced into manufacturing of the solid fiber flexible battery, a coaxial fiber structure comprising the positive electrode, the solid electrolyte and the negative electrode is prepared through a one-time forming technology, and the battery has excellent mechanical flexibility, high energy density and good safety; the energy requirements of wearable equipment and flexible electronics in the future can be met; the flexible battery has remarkable technical innovation and industrial application value in the technical field of flexible batteries.

The invention discloses a high-reliability silver-copper-titanium AMB solder and a preparation method thereof, and belongs to the technical field of electronic welding materials. The solder is composed of silver powder, copper powder, titanium powder, an organic binder and an organic diluent, wherein the organic binder is prepared from acrylic resin and a specific organic solvent. The key point of the preparation method is that the silver powder, the copper powder, the organic binder and the organic diluent are finely mixed and dispersed through a specific multi-stage gradient rolling process; and then, under the condition that the roller gap is adjusted to be large, titanium powder is slowly added in batches and mixed, so that the activity of the titanium powder is prevented from being damaged in violent processing. The solder paste prepared by the method is uniform and stable in performance. When the AMB solder is applied to brazing of an aluminum nitride ceramic substrate, reliable welding spots low in interface porosity, high in bonding strength and excellent in temperature cycle resistance can be formed, and the problems that an existing AMB solder is large in number of pores, poor in strength and insufficient in reliability are effectively solved.

The utility model relates to a special-shaped shaft forge piece shaping tool in the technical field of special-shaped shaft forge piece production, which comprises an upper die, a lower die, a jacking assembly and a die assembly guide mechanism, an upper shaping cavity is arranged at the bottom of the upper die, a lower shaping cavity is arranged at the top of the lower die, and the upper shaping cavity and the lower shaping cavity form a shaping die cavity after die assembly; the jacking assembly comprises two longitudinal sliding blocks symmetrically arranged, the longitudinal sliding blocks are in longitudinal sliding connection along the bottom of the lower die, and the opposite end faces of the longitudinal sliding blocks are splayed inclined faces. Through the inclined plane linkage design of the longitudinal sliding block and the transverse sliding block and the synchronous driving mechanism of the four ejector rods, it is ensured that the upper die is evenly stressed in the demolding process, the problem that in the prior art, due to asynchronous jacking, the upper die deflects is thoroughly solved, and the forge piece shaping precision and the finished product percent of pass are remarkably improved.

The invention discloses a phenolic resin microsphere-based porous carbon conductive composite material and a preparation method thereof, and belongs to the technical field of conductive materials. Phenolic resin microspheres with specific molecular weight and hydroxymethyl content are used as carbon precursors, nitrogen-doped carbon nanofibers are introduced to construct a continuous conductive network, a metal-ligand self-assembled mesoporous template agent is adopted to form ordered multilevel channels, and a skeleton structure is enhanced by virtue of a boric acid ester crosslinking aid. The preparation method comprises the steps of potential regulation and control dispersion of precursor slurry, alkaline steam aging forming and gradient pyrolysis carbonization in an inert atmosphere. The method avoids the use of strong corrosive reagents, and the process is environment-friendly. The obtained composite material has high specific surface area, excellent conductivity and good mechanical strength, effectively solves the technical problems that a traditional porous carbon material is disordered in pore structure, insufficient in conductivity and weak in mechanical property and is difficult to synergistically optimize, and has wide application prospects in the fields of supercapacitor electrodes, silicon-carbon negative electrodes and the like.

The application discloses an automatic unloading and collecting system for shaft workpieces and a use method thereof, which comprises a machine tool for machining the shaft workpieces, and a discharge port arranged on one side of the machine tool, a unloading guide plate for unloading the shaft workpieces is rotatably hinged to the lower side of the discharge port, and the two sides of the unloading guide plate are both provided with a baffle; a sleeve is fixedly installed on the machine tool below the unloading guide plate through an inclined support and is arranged in an inclined mode, a vibrating support rod is movably sleeved in the sleeve through a vibrating mechanism, the other end of the vibrating support rod is rotatably connected with a switching sliding seat, a sliding rail is arranged on the bottom of the unloading guide plate, and the switching sliding seat is slidingly installed on the sliding rail. Through the cooperation of various mechanisms, the automatic, stable and accurate unloading and collecting of the shaft workpieces are realized, the production efficiency is improved, the labor cost is reduced, the workpiece quality is effectively guaranteed, the structural design is novel and practical, the application has significant technical advantages and industrial application value, and is suitable for popularization and use.

This invention discloses a method and system for simulating flames using dynamic adjustment of multi-color LEDs, belonging to the field of intelligent electronic lighting adjustment technology. The method includes: generating chaotic initial values ​​by collecting physical noise from the floating pins of a microcontroller; generating an infinite, non-repeating chaotic numerical sequence using the logistic mapping equation based on the chaotic initial values; allocating the PWM duty cycles of the red and yellow channels using a nonlinear coupling algorithm based on the current chaotic values, and generating the PWM duty cycle of the orange channel based on these duty cycles; smoothing and filtering the three PWM duty cycles to generate smoothed drive signals; and driving the multi-color LED array to emit light according to the smoothed drive signals to simulate a dynamic flame effect. This invention can generate highly realistic and dynamic flame effects using a low-cost, low-power embedded solution.

The invention relates to a high magnetic induction oriented high silicon steel strip and a preparation method thereof. The preparation method comprises the following steps that raw materials are subjected to smelting, continuous casting and hot rolling, and a hot rolled plate with the thickness being 2-3 mm is obtained; the hot-rolled plate is subjected to cold rolling, decarburization annealing and secondary recrystallization annealing treatment, and an oriented silicon steel strip is obtained; dispersing solid silicon oxide powder in an organic solvent to form slurry, and uniformly coating the surface of the oriented silicon steel strip with the slurry; the coated strip is subjected to siliconizing treatment at the temperature of 100-300 DEG C, the feeding speed is larger than or equal to 0.01 m / min, and the protective atmosphere of siliconizing treatment is a silicon-containing gaseous compound; and carrying out post-treatment on the siliconized high-silicon steel strip to obtain the high-magnetic-induction oriented high-silicon steel strip.

The invention relates to the technical field of pre-oxidized fibers, and particularly discloses a cotton spinning pre-oxidized fiber and a preparation method thereof. The preparation method comprises the following steps: mixing a polyacrylonitrile precursor with a first modified oil agent to obtain a pretreated precursor; the first modified oil agent comprises polytetrafluoroethylene dispersion liquid, nano aluminum oxide and a silane coupling agent; carrying out gradient pre-oxidation on the pre-treated precursor in an air atmosphere under the conditions that the temperature is 215-255 DEG C and the tension is 1650-2100 cN, so as to obtain a pre-oxidized fiber; immersing the pre-oxidized fiber into a second modified oiling agent for oiling and curling to obtain a cotton spinning pre-oxidized fiber; the second modified oiling agent comprises an antistatic agent, a bundling agent and a moisture absorption friction increasing agent. According to the invention, the structural stability and antistatic property of the fiber are improved by controlling the condition parameters of pre-oxidation and optimizing the components and proportion of the first modified oil agent and the second modified oil agent, so that the spinnability of the cotton spinning pre-oxidized fiber is improved, and high-quality and large-scale cotton spinning processing of the pre-oxidized fiber is realized.