25results about How to "Change distribution" patented technology

The invention provides a substrate integrated trapped wave mirror image dielectric waveguide S-shaped circularly polarized antenna, which belongs to the field of antennas and comprises an S-shaped dielectric radiator, a metalized through hole, a microstrip feeder line, a first metal grounding plate, a first dielectric substrate, a second metal grounding plate and a second dielectric substrate, the S-shaped dielectric radiator is embedded in the first dielectric substrate and located in the center of the antenna, the lower surface of the S-shaped dielectric radiator is tightly attached to the second metal grounding plate, the upper surface of the S-shaped dielectric radiator is not covered, a plurality of metalized through holes penetrate through the first dielectric substrate and are arranged on the periphery of the S-shaped dielectric radiator in an array mode, and a gap is formed in the second metal grounding plate. The microstrip feeder is located on the lower surface of the second dielectric substrate and is perpendicular to the gap. The end, away from the gap, of the microstrip feeder is connected to a feed port in the second dielectric substrate. Circular polarization is easy to realize by combining the bent dielectric structure with the slot coupling feed at the bottom, and the radiation efficiency of the antenna is improved by using the notch mirror image structure in the antenna design.

This invention provides a lightweight wear-resistant steel alloyed with Nb, V, and Ti, its preparation method, and its applications, belonging to the technical field of lightweight wear-resistant steel. The lightweight wear-resistant steel of this invention, by mass percentage, comprises: Mn 23.0–26.0%, Al 7.5–8.3%, C 1.12–1.25%, Si 0.20–0.25%, Nb 0.05–0.20%, Ti 0.05–0.15%, V 0.05–0.10%, P ≤ 0.03%, S ≤ 0.01%, and the balance Fe. Experimental results show that the lightweight wear-resistant steel provided by this invention has a density ≤ 7.01 g / cm³. 3 Yield strength is 565–654 MPa, tensile strength is 901–985 MPa, elongation is 50.3–58.7%, and KV at -40℃. 2 The impact energy is 97-134J, and the wear resistance is improved by more than 30% with high impact energy.

The application discloses a creep-resistant die-casting rare earth magnesium alloy with high strength and high fluidity, and a preparation method and application thereof. The application belongs to the field of die-casting magnesium alloys. The magnesium alloy comprises, in percentage by mass, Al: 4.8-7.2%, La: 3.0-4.2%, Sm: 1.2-2.0%, Y: 0.4-1.2%, Mn: 0.1-0.6%, Te: 0.01-0.1%, Bi: 0.01-0.5%, and the balance of Mg and inevitable impurity elements. The application significantly refines the structure of the magnesium alloy by optimizing the alloy composition, changes the composition, distribution and morphology of intermetallic compounds in the alloy, simultaneously generates Al-Te phases stable at high temperatures, improves the mechanical properties and creep resistance of the magnesium alloy, and further improves the die-casting fluidity of the magnesium alloy, so as to meet the requirements of large-scale integrated design automobile parts.

The invention belongs to the technical field of ophthalmologic postoperative rehabilitation instruments, and discloses an ophthalmologic laser postoperative light chopper which comprises two light shading devices, the light shading devices are connected with nose pads and a head band, each light shading device comprises a base frame, the base frame is connected with a lead screw, a first lens frame and a second lens frame, and the lead screw is connected with a driven bevel gear and a pair of linkage blocks. The nose pad is connected with a driving bevel gear, and the driving bevel gear is connected with a spacing knob; anti-dazzling screens are clamped to the base frame, the first lens frame and the second lens frame, the first lens frame and the second lens frame are connected with an outer spline shaft and a connecting shaft, and the outer spline shaft is connected with an angle knob through a spring. The shading sheets are connected to the base frame, the first lens frame and the second lens frame, the shading effect is adjusted by adjusting the distance between the first lens frame and the base frame and the distance between the first lens frame and the second lens frame and adjusting the angle of the first lens frame and the second lens frame relative to the base frame, and the use effect is guaranteed.

The present application belongs to the technical field of turnover steel dam gate, and particularly relates to a turnover steel dam gate, which aims to solve the technical problem that when a relatively high water surge impacts on the gate, the impact force will directly act on the dam body, which is easy to cause damage to the dam body, and comprises a steel dam gate assembly, a hydraulic cylinder assembly, a buffer connecting assembly and a displacement adjusting assembly, the steel dam gate is connected with the hydraulic cylinder assembly, the hydraulic cylinder assembly is connected with the buffer connecting assembly, the buffer connecting assembly is connected with the displacement adjusting assembly, and the displacement adjusting assembly is connected with the steel dam gate assembly; in order to reduce the effect of the water surge on the concrete base, when the water surge impacts on the steel dam gate, the force is then transmitted to the concrete base through the hydraulic cylinder assembly, the absorption of the force is then realized through the inner end buffer spring between the hinged sliding block and the extruded sliding block, the impact force on the concrete base is then reduced, and the protection of the concrete base is then realized.

The application relates to the technical field of battery materials, and discloses a sodium-philic carbon-based material, a negative-electrode-free current collector, a preparation method of the sodium-philic carbon-based material and a sodium metal battery. The preparation method of the sodium-philic carbon-based material comprises the following steps: providing a mixed solution, wherein the mixed solution comprises carbon source powder, an iron source and a solvent; fully reacting the mixed solution in a protective atmosphere at 160-240 DEG C; obtaining a carbon-loaded sodium-philic material after solid-liquid separation; fully calcining the carbon-loaded sodium-philic material in an inert atmosphere at 700-900 DEG C to obtain a porous sodium-philic precursor; and treating the porous sodium-philic precursor in a reaction gas atmosphere at 400-700 DEG C for 1-3 hours to obtain the sodium-philic carbon-based material. The reaction gas atmosphere is an ammonia gas and inert gas mixed atmosphere or an ammonia gas atmosphere. The material is coated on the surface of the negative-electrode-free sodium metal battery current collector, and can enhance the electrochemical performance of the battery.

The invention discloses a preparation method of a catalyst. The preparation method comprises the following steps: (1) preparing a guiding agent A; (2) preparing a mixture B; (3) carrying out hydrothermal crystallization on the mixture B; (4) preparing an HY molecular sieve; (5) loading active metal on the HY molecular sieve; and (6) activating with H2 to obtain the catalyst. The invention also discloses application of the catalyst in hydroisomerization conversion of polycyclic aromatic hydrocarbon into alkyl adamantane.

The invention relates to the technical field of lithium ion batteries, and discloses a trans-perovskite solid electrolyte performance optimization design method, which comprises the following steps: S1, constructing two-dimensional layered double-oxygen-group element trans-perovskite with different double-oxygen-group element distributions, optimizing crystal lattices and obtaining ground state energy, lattice parameters of the two-dimensional layered double oxygen group element trans-perovskite are determined; s2, analyzing the stability of the two-dimensional layered double-oxygen-group element trans-perovskite by calculating a phonon structure and decomposition energy; s3, constructing a two-dimensional layered double-oxygen-group element trans-perovskite supercell model, simulating different defect types and different diffusion types, and analyzing a diffusion mechanism of ions in the two-dimensional layered double-oxygen-group element trans-perovskite; and S4, calculating the ionic conductivity of the two-dimensional layered dioxygen group element trans-perovskite. According to the technical scheme, the structure of the trans-perovskite material is optimized, so that the ionic conductivity and the stability of the solid electrolyte are improved.

The application provides a transistor interface state model optimization method, a computing device and a storage medium. The method comprises the following steps: constructing a transistor interface state model; if the defect type is an acceptor type defect; calculating the ionized acceptor type interface state defect concentration according to an acceptor type ionization probability model; adding the acceptor type interface state defect concentration to a Poisson equation to obtain an acceptor type Poisson equation; replacing the Poisson equation with the acceptor type Poisson equation to obtain an acceptor type transistor interface state optimization model; if the defect type is a donor type defect; calculating the ionized donor type interface state defect concentration according to a donor type ionization probability model; adding the donor type interface state defect concentration to the Poisson equation to obtain a donor type Poisson equation; replacing the Poisson equation with the donor type Poisson equation to obtain a donor type transistor interface state optimization model. The beneficial effect of the scheme is that the transistor interface state model is optimized, and the base current simulation result obtained by using the optimization model is more accurate.

The invention discloses a rotor, a motor, a compressor and refrigeration equipment, the rotor comprises a permanent magnet and a rotor iron core, the rotor iron core is provided with a plurality of structural groups, each structural group comprises a mounting groove and n slits, n is a positive integer, the permanent magnet is arranged in the mounting groove, and the slits are arranged in the mounting groove. The slits are located between the mounting grooves and the outer peripheral surface of the rotor core, the width of each slit is Ln, the width of each mounting groove is b, the total width of the n slits is Sigma Ln, Sigma Ln = L1 + L2 +... + Ln, and the relationship between Sigma Ln and b is 0.1 < = Sigma Ln / b < = 0.5. According to the technical scheme, the magnetic line trend can be optimized, magnetic leakage is reduced, the permanent magnet utilization rate is improved, and the motor efficiency is improved.

The invention provides an adjusting structure applied to an HDP top shower head, and belongs to the technical field of semiconductor equipment, the adjusting structure comprises a machine table, a plurality of side nozzles, the top shower head and a shower head lifting device, the surface of the machine table is provided with a round hole, the lower surface of the machine table is fixedly connected with a connector, the inner wall of the connector is fixedly communicated with the side nozzles, and the side nozzles are fixedly connected with the shower head lifting device. The top shower head is located in the machine table, the shower head lifting device is located on the machine table, and the shower head lifting device comprises a connecting cavity. According to the invention, the height of the top shower head can be adjusted, so that the top shower head can move up and down according to different processes to change the distribution of reaction gas; according to different gas flow processes, the position of the top shower head can be adjusted to find the most appropriate matching position with the side nozzle, so that the gas reaction on the surface of the wafer is more uniform, the wafer thickness uniformity is finally optimized, and the problem that the uniformity of a large-flow gas process cannot meet the requirements of customers is solved.

The utility model discloses a solid particle flow control device and a heater. The flow control device (100) comprises: a valve body (10) having a feed channel (12) and a discharge channel (13), where the feed channel (12) is a downward channel for causing solid particles to flow downward into the valve body (10) under the action of gravity; the discharging channel (13) is located on the lower portion of the valve body (10) and used for guiding solid particles entering the valve body (10) through the feeding channel (12) to flow out of the valve body (10) downwards under the action of gravity. And the valve core (20) is fixed on the valve body (10) through a valve seat (30), is in transmission connection with a driving mechanism, and comprises an end part (21) of which the cross sectional area is gradually changed, and when the valve core (20) is driven, the end part (21) does linear motion in and out of the discharging channel (13) so as to change the depth of entering the discharging channel (13), and meanwhile, the end part (21) rotates automatically so as to stir the solid particles, so that the flow of the solid particles flowing out of the valve body (10) is changed.

The present invention discloses a fuel cell with a cathode flow channel shunt design and a gradient distribution of Pt content in the catalyst layer, which comprises an anode current collector, an anode diffusion layer, a membrane electrode with a gradient platinum content, a cathode diffusion layer, and a cathode current collector in sequence. A main air inlet and at least one shunt air inlet are provided on the cathode current collector of the cathode module constituting the fuel cell to allow air of different flow rates to pass through, and the catalyst concentration of the cathode catalyst layer of the membrane electrode with a gradient platinum content increases from the air inlet to the air outlet. The catalyst layer of the membrane electrode fuel cell with a gradient platinum content of the present invention adopts a gradient distribution, so that the gas at the battery outlet is completely reacted, achieving the effect of uniform utilization of the active area and reducing production costs; the shunt air intake is adopted to change the distribution of the gas in the battery, and the diffusion and mass transfer of the gas in the cathode side diffusion layer is improved, achieving the effect of improving battery performance.

The application discloses a kind of experimental apparatus of synthesizing different component natural gas hydrate, it is related to natural gas hydrate synthesis technical field, it includes: hydrate generation unit, separable material adding unit, ball valve pressure maintaining unit and control and detection unit, hydrate generation unit includes hydrate generation bucket, the hydrate generation bucket is used to reaction generation with metal tracer particle hydrate;Separable material adding unit is used to add metal tracer particle in hydrate reaction process;Ball valve pressure maintaining unit is arranged between the material adding unit and the hydrate generation unit, for controlling the intercommunication and closure of both;Control and detection unit is used to control motor in the material adding unit moves according to instruction, and is used to receive, process and show the data of various sensors of the hydrate generation unit.The application can be synthesized while hydrate, can be added according to research needs even or layer by layer suitable metal tracer particle.

The invention belongs to the field of soil pollution treatment, and relates to a method for jointly relieving toxicity of microplastics to a soil-plant system based on a nitrification inhibitor-carbon nanomaterial. The method comprises the following steps: applying a nitrification inhibitor and a carbon nanomaterial to plant planting soil; the nitrification inhibitor is DMPP, and the carbon nanomaterial is one or more of a multi-walled carbon nanotube and a nanodiamond. The method can technically slow down microplastic pollution, improve soil health and guarantee quality safety of agricultural products.

This invention relates to a six-degree-of-freedom (6DOF) measurement system and method. The 6DOF measurement system includes a camera, a prism, and a target; the optical axis of the prism is coaxial with the line of sight of the camera; the target is mounted on the target and positioned within the combined field of view of the camera and prism; the target includes a mounting base and a main shaft mounted on the mounting base, with a fixing plate on the main shaft; an annular sleeve is fixedly connected to the fixing plate, and a motor is mounted outside the annular sleeve; the main shaft of the motor passes through the annular sleeve and is connected to a transmission component, which has rollers connected to a slider. Driven by the motor, the slider can slide radially from the center to the edge of the annular sleeve via the rollers; a main marker is mounted on the top of the main shaft, and an auxiliary marker is mounted on the top of the slider. Compared with the prior art, this invention can achieve six-degree-of-freedom pose measurement of a target under uncalibrated conditions, improving the adaptability of the measurement system.

The gas stove comprises a panel and an electromagnetic valve assembly, a bottom plate is connected to the bottom of the panel, a supporting disc is integrally formed on one side of the top of the panel, a stove disc is arranged in the supporting disc, a mounting hole is formed in the position, located on one side of the supporting disc, of the top of the panel, and a stove head is arranged in the mounting hole; the ignition system in the controller controls the two sets of ignition needles to work and generate electric sparks, the electric sparks make contact with gas in the burner and the long open fire pipe, and after the induction needle induces fire, the controller opens the big fire electromagnetic valve, and the big fire electromagnetic valve is opened. Fuel gas is introduced into the second control valve through the big fire gas pipe to adjust the gas supply amount, then is supplied into the gas inlet pipe and is mixed into the combustion gas cylinder through the gas inlet pipe to be subjected to big fire output combustion, and therefore household fine fire can be achieved through the furnace end, and big fire output combustion of the fuel gas is achieved through the combustion gas cylinder. Due to the design concepts of ultra-thin type, air blowing and large firepower, various requirements of household and commercial restaurants can be met at the same time.

The invention discloses a wear-resistant metal composite hammerhead and a preparation method thereof, and belongs to the technical field of preparation of mechanical equipment crusher hammerheads. Comprising the following raw materials in percentage by weight: 20%-32.5% of scrap steel, 21%-26% of pig iron, 1%-3% of rare earth ferrosilicon alloy, 28%-36% of ferrochromium alloy, 8%-12% of ferrotitanium alloy, 4%-7% of high-carbon manganese steel and 0.5%-1% of a modified alterant. According to the invention, the wear resistance of the metal composite hammer head is improved through the synergistic cooperation of rare earth, chromium, titanium, manganese and the modified alterant.

The application provides a high-toughness ferrite-pearlite type non-quenched and tempered steel and a manufacturing method thereof, and the composition of the steel is as follows: C 0.35-0.42%, Si 0.35-0.45%, Mn 1.25-1.65%, P ≤0.010%, S 0.025-0.050%, Cr 0.10-0.30%, Nb 0.02-0.05%, Mo 0.010-0.050%, Ni 0.10-0.25%, Al 0.025-0.045%, V 0.10-0.30%, Cu ≤0.10%, Ti 0.010-0.040%, [N] 120-160ppm, [H] ≤1.0ppm, T.O ≤10ppm; the rest is Fe and inevitable impurity elements; the steel is combined with a controlled rolling and controlled cooling process, the ferrite content is increased, the strength and toughness are improved, the strength and toughness are matched, and the cutting performance is improved.

The invention relates to the technical field of lubricating oil processing, and discloses a feeding device for lubricating oil processing and a feeding method thereof.The feeding device comprises a main body, the top of the main body is fixedly connected with a feeding pump, the interior of the main body is fixedly connected with a feeding box, the top of the feeding box is in bolted connection with a top cover, and the bottom of the feeding box is fixedly connected with a discharging pipe. When lubricating oil is sprayed out through the flexible pipe, impurities filtered out from the surface of the filter screen can be impacted through the lubricating oil sprayed out in an accelerated mode, after the impurities on the filter screen are impacted, the pushing situation can be reduced, it can be ensured that the filter plate keeps high permeability all the time, and the filtering effect is improved. Therefore, the lubricating oil is continuously and efficiently filtered.

The invention relates to the technical field of regenerated aluminum alloys, and discloses a method for preparing an aluminum alloy by regenerating waste aluminum, which comprises the following steps: (1) collecting a waste aluminum material; (2) cleaning and drying the waste aluminum material; (3) adding the waste aluminum material into a smelting furnace, and smelting to obtain a smelting solution; (4) the smelting temperature is adjusted, and stirring is conducted; (5) smelting liquid is subjected to refining treatment; (6) regulating the temperature after refining treatment, adding a modifier, stirring for 20 minutes, regulating the temperature, and pouring into a mold; and (7) the poured mold is subjected to pulsed magnetic field treatment, and demolding is conducted after complete solidification. The modifier is added into the waste aluminum smelting liquid, the main purpose is to improve the casting performance and the machining performance of the waste aluminum smelting liquid, and then the strength, hardness and other mechanical properties of the regenerated aluminum alloy are improved.

The application relates to a magnetic conversion type flexible temporary fastener which comprises a shell, a switch assembly, a magnetic control assembly and a clamping assembly; the magnetic conversion type flexible temporary fastener introduces a magnetic control assembly, the relative movement of a magnet and a shielding frame changes the spatial magnetic field generated by the magnet, so that the magnetic control assembly generates magnetic attraction to an abutting table, and then a top rod can be firmly inserted into a pawl to maintain the fastening effect on an aircraft panel wall, which is favorable for simplifying the assembly process and improving the stability and safety of aircraft assembly; the magnetic focusing effect of a magnetic conductive cover can further change the distribution of the spatial magnetic field, so as to accurately control the magnetic attraction of the magnetic control assembly to the abutting table; the temporary fastener has a clever structure design, stable clamping state and simple assembly.

The invention discloses a magnetic resonance radio frequency enhanced imaging method and a magnetic resonance radio frequency enhanced imaging system with metamaterial units distributed outside a visual field, each metamaterial unit comprises a plurality of strip-shaped conductors, the plurality of conductors are sequentially stacked, two ends of any two adjacent conductors are connected, each conductor is bent or bent towards one side, and each conductor is bent towards the other side. Any two adjacent conductors are bent or bent towards opposite directions; the magnetic resonance radio frequency enhanced imaging method with the metamaterial units bestrewed outside the visual field comprises the step of bestrewing the metamaterial units in an area outside the visual field in a radio frequency coil of a magnetic resonance imaging system. The magnetic resonance imaging system comprises a radio frequency coil of the magnetic resonance imaging system and the metamaterial unit arranged in an area outside the visual field in the radio frequency coil. The imaging effect of magnetic resonance imaging can be enhanced.

The application discloses a display panel and a display device. The display panel comprises a first substrate, a pixel layer and a second substrate which are sequentially stacked, and a plurality of pixel units are arranged in the pixel layer. The pixel unit comprises an isolation wall, a first electrode, a second electrode and a stretchable capsule. The stretchable capsule is filled with a second solution. The second solution contains a colorant and an ion intercalation material. By accurately controlling the voltage and current applied by the electrode, the degree of electrochemical reaction can be adjusted, and the dynamic regulation of the expansion and contraction state of the stretchable capsule can be realized. Since the colorant cannot pass through the capsule wall of the stretchable capsule, the volume change of the stretchable capsule can directly change the distribution of the colorant, so as to change the optical reflectivity or color display effect of the pixel unit. By adjusting the expansion degree of the stretchable capsule, the space proportion of the colorant in the accommodation cavity can be accurately controlled, and the fine regulation of the gray scale level can be realized, so that the pixel unit presents multiple gray scales.

The invention relates to the technical field of reactors, in particular to a micro-channel-based hydrogenation reactor which comprises a reaction shell, a micro-channel reactor is arranged at the top in the reaction shell, and a gas inlet pipe and a hydrogenation gas pipe are connected to the top of the reaction shell; the bearing net is fixedly connected with the reaction shell; the sufficient reaction mechanism is arranged in the reaction shell, the sufficient reaction mechanism comprises a driving assembly, a mounting seat, an elastic element, a connecting shaft, an ejector rod and a push plate, and through the design of the sufficient reaction mechanism, catalyst particles can be thrown up in the reaction process, the contact degree of the catalyst particles and reactants is increased, and the reaction efficiency is improved. The catalyst particles can be uniformly distributed, so that the reaction efficiency and the reaction sufficiency are improved, the push plate can push back the gas, on one hand, the gas is disturbed and the distribution of the gas is changed, and on the other hand, the gas can be pushed back to be in contact with the catalyst particles again, so that the gas which is not fully reacted reacts.