13results about How to "Promotes even distribution" patented technology

The invention provides a preparation method of a high-performance grain boundary diffusion sintered neodymium iron boron material, and belongs to the technical field of permanent magnet materials. The low-melting-point heavy-rare-earth-free alloy coating is coated and cured on the easy-to-diffuse surface of the neodymium-iron-boron base material magnet, and the heavy-rare-earth alloy coating is coated and cured on the low-melting-point heavy-rare-earth-free alloy coating; and the coated magnet is sequentially subjected to low-temperature pre-diffusion heat treatment, grain boundary diffusion heat treatment and aging treatment, and then the grain boundary diffusion neodymium-iron-boron magnet is obtained. According to the invention, the diffusion efficiency of heavy rare earth elements can be effectively improved, the coercive force of the magnet is improved, and relatively high residual magnetism can be achieved.

The application discloses a metal part plasma detonation treatment device, which comprises a capacitive induction power supply, a reaction chamber and a detonation gun. The capacitive induction power supply comprises a ring-shaped cathode electrode, a ring-shaped anode electrode and a center electrode. The center electrode is fixedly connected with the anode electrode. The reaction chamber is a ring-shaped cavity surrounding the anode electrode. The reaction chamber separates the cathode electrode from the anode electrode. The detonation gun is connected with a detonation gun ring chamber and is used for introducing combustible gas and performing periodic detonation. The nozzle is connected with the ring-shaped cavity and is used for introducing alloy elements. The metal part plasma detonation treatment device improves the hardening effect of the device on the metal surface, improves the uniform distribution of the alloy elements, and improves the modification quality and productivity of the workpiece surface.

This utility model discloses a water flow distribution device for rice irrigation, including an irrigation pipe, connecting rings fixedly installed on both sides of the irrigation pipe, an adjustment device fixedly installed on the top surface of the irrigation pipe, a fixing device fixedly installed on the outer periphery of the adjustment device, a support platform fixedly installed on the top surface of the adjustment device, and a diversion device fixedly installed on the top surface of the support platform. A solar panel provides power to a motor, which rotates to drive a rotating shaft, which in turn drives a rotating plate. The rotating plate rapidly diverts the water flow inside the water distribution seat into a diversion pipe, and the diversion nozzles evenly irrigate the water flow inside the diversion pipe. This device facilitates convenient and uniform water flow distribution, enabling the water flow to be evenly delivered in all directions for large-area irrigation. By pushing the support platform, the support platform drives an irrigation adjustment rod, which moves out of the irrigation column to a suitable height. Rotating the adjustment knob connects the adjustment knob to the corresponding adjustment hole, allowing the device to be easily adjusted to different heights according to the rice plants.

The utility model relates to the technical field of reactors, and provides a hydrogenation reactor with uniformly distributed hydrogen, which comprises a reactor body, a cover body is fixed at the top end of the reactor body, and a filter structure is mounted on one side of the top end of the cover body. By arranging the filtering structure, under the action of the flange plate, external connection of hydrogen is facilitated, when the clamping block moves into the clamping groove, the box cover and the filtering box are mutually fixed at the moment, the hydrogen enters the filtering cylinder through the air inlet pipe, under the action of the filtering cylinder, the hydrogen is conveniently filtered, the filtered hydrogen enters the device body through the connecting pipe, and the filtering effect is good. And a box cover is moved through a handle, so that the box cover drives a clamping block to move to the outer part of a clamping groove, at the moment, the box cover and the filter box are separated from each other, so that the filter cartridge is cleaned, the function of preventing blockage of the device is realized, and the applicability of the hydrogenation reactor with uniform hydrogen distribution in use is improved.

The present application relates to the technical field of catalyst, and particularly discloses an iridium catalyst and preparation and application thereof, the present application utilizes a small amount of oxalic acid to regulate and control the hydrolysis kinetics of iridium precursor, step-by-step accurately controls pH and temperature, in-situ precipitates and anchors hydrated iridium hydroxide precursor on the surface of the carrier, and ensures that the iridium species realizes uniform distribution in the subsequent precipitation process. By using the two-step heat treatment method of stabilization and ultralow-temperature reduction, sodium chloride crystals are induced to precipitate as a pore-forming agent, the active phase of elemental iridium is accurately controlled at 5-8 nm through the space confinement effect, the active point site agglomeration caused by high-temperature sintering is avoided, and the sodium chloride is removed through subsequent acid washing to construct a rich pore structure, the structure makes the catalyst have significant advantages in electrochemical impedance spectrum analysis, stability test electrochemistry and polarization performance test, and realizes high dispersion, high activity, high mass transfer efficiency and high stability.

The application discloses a kind of composite lithium metal negative electrode material and preparation method thereof, it is related to electrochemical energy storage technical field, the method comprises: the three-dimensional porous carbon framework of pore size 50 to 500 nanometers is constructed, and 2 to 10 nanometer nitrogen-doped carbon layer is coated on its inner wall;Metal lithium is fused with lithium nitride to form lithium-rich melt;Capillary force is used to make molten lithium infiltrate into framework channel, in-situ generation and C-Li-N gradient interface phase;Lithium directional solidification is realized by programmed temperature cooling;Surface deposition 50 to 150 nanometer amorphous aluminum oxide passivation layer;Again, the final material is obtained by aging treatment.The application realizes lithium uniform loading, interface high ionic conductivity, structural integrity and high safety by the above technical scheme, significantly inhibits lithium dendrite growth, improves cycle stability and energy density consistency.

This invention discloses a rapid human interleukin-4 test strip based on a double-antibody sandwich method. The test strip includes a sample pad, a latex pad, a conjugate pad, a nitrocellulose membrane, and an absorbent pad. The latex pad is made of latex microspheres labeled with CKIgY monoclonal antibody and red polystyrene latex microspheres. The conjugate pad is made of latex microspheres labeled with IL-mouse monoclonal antibody and red polystyrene latex microspheres. A detection line and a control line are located in the center of the nitrocellulose membrane. The detection line contains a protein conjugate for binding with the IL-mouse monoclonal antibody, and the control line contains an IgG monoclonal antibody. An upper shell is located on the outside of the test strip, and a matching lower shell is provided. This invention provides a rapid human interleukin-4 test strip based on a double-antibody sandwich method. This test strip has high sensitivity, low risk of cross-reaction, simple operation, and low cost.

This invention belongs to the technical field of biological cell reaction equipment, specifically a bioengineering reaction vessel, comprising a vessel body, a pneumatic device, a sensing device, and a regulating device. The bottom of the vessel body is connected to the pneumatic device, and the upper end of the pneumatic device is connected to a main rod. Multiple sensing devices are connected to one side of the main rod, and these sensing devices are arranged vertically and alternately, with a driving connection between the sensing devices and the regulating device. This invention generates uniformly distributed microbubbles through the pneumatic device integrated at the bottom of the vessel body, providing dissolved oxygen and hybrid power to the reaction system. The vertically and alternately arranged sensing devices detect changes in the fluid state at different levels within the vessel in real time due to cell growth, product accumulation, etc., and convert these changes into measurable signals. The regulating device drives the sensing devices to change their states, thereby actively adjusting the mixing intensity and flow field, achieving real-time in-situ sensing and adaptive closed-loop control of the mixing state during the bioreaction process.

The utility model relates to the technical field of fences, in particular to a crab breeding fence structure which comprises a stand column, the upper surface of the stand column is in threaded connection with a threaded seat, the interior of the threaded seat is rotationally connected with a mounting shaft, the lower surface of the stand column is in threaded connection with a pointed cone, and the outer surface of the mounting shaft is fixedly connected with a fence net in an embedded mode. The outer surface of the stand column is fixedly connected with a lower fixing block, the upper surface of the lower fixing block is fixedly connected with a mounting seat, the inner surface of the mounting seat is movably connected with a reinforcing module, the reinforcing module comprises a hinge seat, a rotating rod, a sliding seat and a reinforcing claw, and the hinge seat is movably connected to the inner surface of the mounting seat. After the rotating rod is rotated, the reinforcing claws are turned over, and one ends of the reinforcing claws penetrate through the fence net and are inserted into the ground, so that the lower end of the fence net can be fixed, and the situation that the lower end of the fence net is affected by water flow or movement of crabs, upwarps and loses the due blocking effect is avoided.

The invention discloses a novel copper-tungsten alloy material and a preparation process thereof, and the novel copper-tungsten alloy material comprises the following components in percentage by mass: 60-90% of tungsten powder; 0.001 to 0.05 percent of pretreated tellurium powder; the balance of copper powder; the pretreated tellurium powder is composed of 0.1-0.2% of molybdenum disulfide nano powder and the balance tellurium powder; the preparation process comprises the following steps: S1, tellurium powder pretreatment: S1-1, particle size regulation and control, S1-2, anti-agglomeration treatment, S2, copper-tungsten-tellurium composite powder mixing and pretreatment: S2-1, weighing and batching, S2-2, ball milling and mixing, S2-3, process monitoring and post-treatment, and S3, compression molding and vacuum sintering. The particle size of the tellurium powder is regulated and controlled, and the molybdenum disulfide nano powder is used for anti-agglomeration pretreatment, so that the excellent dispersity of the tellurium powder is ensured; by means of multi-stage temperature-controlled vacuum sintering, tellurium volatilization is effectively inhibited, formation of a compact alloy structure is promoted, the technical problem that tellurium element is prone to volatilization and agglomeration is solved, and the cutting machining performance is remarkably improved while high electric conductivity and heat conductivity of the material are kept.

The invention discloses a medium-resistant silicon-containing butyronitrile ester rubber with a wide temperature range and a preparation method of the medium-resistant silicon-containing butyronitrile ester rubber. The preparation method comprises the following steps: preparing trimethylsilyl ethyl acrylate; the preparation method comprises the following steps: adding water, an emulsifier, an activator, trimethylsilyl ethyl acrylate, acrylonitrile and a molecular weight regulator into a polymerization kettle, vacuumizing, carrying out nitrogen replacement for several times, adding a deoxidant and a butadiene monomer, adding an initiator, and starting polymerization reaction; when the conversion rate reaches 30 to 35 percent, supplementing trimethylsilyl ethyl acrylate; when the polymerization conversion rate reaches 50-55%, supplementing acrylonitrile, the emulsifier and the molecular weight regulator; when the polymerization conversion rate reaches 65-70%, supplementing the initiator and the trimethylsilyl ethyl acrylate; and continuously reacting until the polymerization conversion rate reaches 80-85%, adding a terminating agent, reacting, and condensing, washing and drying the obtained latex to obtain the silicon-containing butyronitrile ester rubber. According to the silicon-containing butyronitrile ester rubber prepared by the preparation method, the high temperature resistance, low temperature resistance and medium resistance of the rubber are improved.

The application belongs to the field of calcium carbonate materials, and particularly relates to a preparation method and application of rod-shaped nanometer calcium carbonate, the preparation method comprising: pretreatment, precursor treatment, carbonization reaction, separation and purification, and post-treatment. The application greatly reduces the preparation cost by optimizing the preparation process, and the obtained rod-shaped nanometer calcium carbonate has stable structure, a stable length-diameter ratio of 15-20:1, and good dispersibility, can greatly reduce the thermal conductivity, is applied to thermal insulation waterproof materials, and has remarkable economic and social benefits.

This invention discloses a dual-cycle collaborative scheduling method, system, equipment, and medium for sea-rail intermodal AGVs, comprising: constructing a multi-resource collaborative scheduling model with minimizing completion time as the objective, setting train arrival time as a dynamic trigger parameter; judging the execution timing of direct-fetch tasks based on this, splitting them into sub-tasks from shore to yard and then to train if the arrival time is earlier, otherwise maintaining direct-fetch; constructing dual-cycle constraints in time periods and matching import and export tasks to generate operation sequences; finally, through multi-layer coding mapping, using an improved whale algorithm to iteratively solve and output the optimal scheduling scheme. This invention significantly improves equipment utilization, operation continuity, and overall system scheduling efficiency under the sea-rail intermodal mixed operation mode.