33results about How to "Structural symmetry" patented technology

The invention discloses a Ka-band waveguide three-way power divider, which belongs to the technical field of microwave and millimeter waves, and is characterized in that a combining port is formed in the front side wall of a shielding box, and three distribution ports are formed in the rear side wall of the shielding box; a coplanar magic T equal power divider, a coplanar magic T equal power combiner, a branch waveguide unequal power divider, an L-shaped waveguide, a Z-shaped waveguide and a half waveguide-full waveguide gradual change structure are arranged in the shielding box. Wherein the coplanar magic T equal power divider comprises an E-T junction waveguide cavity, two equal branch waveguide cavities, a microstrip probe and a power resistance load, and outputs two paths of signals with equal amplitude and opposite phases; the branch waveguide unequal power divider comprises a four-branch waveguide directional coupler and an inclined-wedge-shaped waveguide matching load, and the output power ratio of a straight-through output port to a coupling output port is 2: 1. The filter has the advantages of being symmetrical in structure, good in amplitude and phase consistency, small in insertion loss, good in port standing wave and high in isolation degree.

The invention relates to the technical field of artificial electromagnetic metasurfaces, in particular to a full-space multifunctional terahertz metasurface. The metasurface is composed of a plurality of metasurface units arranged periodically, and each metasurface unit sequentially comprises a first metal structure layer, a first middle dielectric layer, a grating layer, a second middle dielectric layer and a second metal structure layer from top to bottom. The first metal structure layer and the second metal structure layer are the same in structure and each comprise two C-shaped metal rings, and the two C-shaped metal rings are connected in a staggered mode to form a disconnected and staggered S shape. The first intermediate dielectric layer and the second intermediate dielectric layer are consistent in thickness; the grating layer comprises vanadium dioxide and copper which are alternately arranged, and multifunctional dynamic regulation and control of transmission, reflection and the whole space are achieved by controlling phase change of the vanadium dioxide. The metasurface provided by the invention can respectively realize the functions of polarization conversion, linear-circular polarization wave conversion, circular dichroism, asymmetric transmission and the like in different states.

The utility model discloses a surge high-voltage closed-loop feedback automatic control system, and relates to the technical field of surge high-voltage automatic control systems. The circuit comprises a feedback network composed of an operational amplifier U1, a first resistor R1, a first capacitor C1, a second resistor R2 and a second capacitor C2. The circuit also comprises a third resistor R3, a fourth resistor R4, a third capacitor C3, a fourth capacitor C4, and a fifth capacitor C5. The utility model has the advantages of few devices, symmetrical structure, beautiful circuit board layout, less device parameter differentiation, clear and simple circuit structure hierarchy and convenient maintenance and debugging, and can reduce the warehouse material number and improve the warehouse management efficiency; required Kp, Ki and Kd values can be easily obtained by changing parameter values of the resistors R1, R2, R3 and R4 and the capacitors C1, C2, C3 and C4. The circuit not only has timely and rapid proportional action, but also has residual error elimination capability with integral action and advanced control function with differential action.

The invention relates to a turnover hoisting mechanism and a turnover hoisting method, and relates to the field of building construction, the turnover hoisting mechanism comprises a hoisting frame, a hoisting assembly and a turnover assembly, the hoisting assembly is fixedly or detachably connected with the hoisting frame, and the turnover assembly is fixedly connected with the hoisting frame. The overturning and hoisting method adopts the overturning and hoisting mechanism to overturn and hoist the prefabricated part. The overturning and hoisting mechanism has the beneficial effects that when the overturning and hoisting mechanism is used for overturning or hoisting, only a hoisting belt or a rope connected with a hoisted object needs to be replaced, the working efficiency of hoisting transportation and overturning operation of the integrated module house and the large building component is improved, the investment of production equipment is saved, the equipment is light, convenient to move and low in cost, and the production cost is reduced. And a fixed field is not occupied.

The invention relates to the field of ankle joint rehabilitation robots, in particular to a one-translation and two-rotation type parallel ankle joint rehabilitation robot and a working method. The parallel mechanism comprises a static platform, a first mixed branch chain, a second just constraint branch chain and a movable platform, and a basic kinematic chain containing two loops is formed. The mechanism only comprises a translation pair and a rotation pair, so that the mechanism has the advantages of high rigidity and good precision.

This invention discloses a polyolefin-containing DCPD epoxy resin and a copper-clad laminate composition thereof, and its preparation method. The method is characterized by: polymerizing polyallyl phenol and catalyst A at high temperature to form polyallyl phenol; then reacting DCPD, polyallyl phenol, and catalyst B at high temperature to form a polyolefin-containing DCPD phenol resin; subsequently, epoxidizing the resin with epichlorohydrin and alkaline catalyst C to synthesize a polyolefin-containing DCPD epoxy resin; finally, mixing the resin with maleimide resin, phosphorus-containing phenolic resin, imidazole accelerator, inorganic filler, and solvent to obtain the polyolefin-containing DCPD epoxy resin composition for copper-clad laminates. The polyolefin-containing DCPD epoxy resin and copper-clad laminate composition prepared by this invention exhibits low dielectric constant, low dielectric loss, and high heat resistance, making it particularly suitable as a raw material for copper-clad laminates and highly practical.

The application relates to a detachable built-in filter cartridge with filter material convenient to replace, belonging to the technical field of fluid filtration, which comprises a filter cartridge body and a filter cylinder body, a filter cartridge top seat and a filter cartridge bottom seat are fixedly arranged at the upper end and the lower end of the filter cartridge body respectively, the filter cylinder bottom seat and the filter cartridge bottom seat are matched through a rotating clamping structure, a filter cylinder cover is rotatably clamped at the top of the filter cartridge top seat, and a filter cartridge discharge port is arranged at the bottom of the filter cartridge bottom seat. The filter cartridge top seat is provided with a first locking ring with a first protrusion, the filter cartridge bottom seat is provided with a second protrusion, and the first locking ring and the second protrusion are matched with corresponding circular sliding grooves and protrusions respectively to realize quick dismounting and positioning. Equal-diameter circular filter holes are arranged in the circumferential array outside the filter cylinder body, and filter cloth is sewn on the inner wall of the filter cartridge body to realize filtration. The detachable structure is adopted, the problem that filter material of a traditional integrated filter cartridge cannot be replaced and maintained is solved, the detachable filter cartridge has the characteristics of convenient dismounting and assembling, stable assembly, uniform liquid inlet filtration, good dustproof effect of the top, effectively reduced use and maintenance costs, and is suitable for various fluid filtration working conditions and has high practicability.

The invention discloses a main drive module, a motor controller and a vehicle. The main drive module comprises a shell, a filtering assembly, a capacitor core package assembly, a power module assembly and a three-phase plastic-coated assembly. The shell is provided with heat dissipation water channels in mirror symmetry; one side of the heat dissipation water channel is used for dissipating heat of the capacitor core package assembly; the other side of the heat dissipation water channel dissipates heat of the power module assembly; the shell, the filtering assembly, the capacitor core package assembly, the power module assembly and the three-phase plastic-coated assembly are distributed in a blade shape; the shell is a vein, the filtering assembly and the capacitor core cladding assembly are conduits in the vein, the power module assembly is mesophyll in the vein, and the three-phase plastic-coated assembly is a sieve tube in the vein; the three-phase plastic-coated assembly can be a single-drive three-phase plastic-coated assembly or a double-drive three-phase plastic-coated assembly so as to realize switching of two output modes. Through the design of simulating plant leaves, the functions of multi-stage filtering, synchronous heat dissipation, mirror image temperature control, dual-mode integration and the like can be achieved, and a single-drive mode and a dual-drive mode are compatible.

The invention relates to a heterojunction cell structure and a preparation method thereof. The heterojunction cell structure comprises an intermediate cell structure which is N-type monocrystalline silicon; the front cell structure comprises a front intrinsic amorphous silicon film and N-type amorphous silicon, the front intrinsic amorphous silicon film is stacked on one side of the middle cell structure, and the N-type amorphous silicon is stacked on one side, away from the middle cell structure, of the front intrinsic amorphous silicon film; the back cell structure comprises a back intrinsic amorphous silicon film and P-type amorphous silicon, the back intrinsic amorphous silicon film is stacked on the other side of the middle cell structure, and the P-type amorphous silicon is stacked on the side, away from the middle cell structure, of the back intrinsic amorphous silicon film; the thickness of the front intrinsic amorphous silicon film and the thickness of the back intrinsic amorphous silicon film are 5-10 nm, the thickness of the N-type amorphous silicon and the thickness of the p-type amorphous silicon are 15-20 nm, and the technical problem that the production cost is increased when a PECVD film making machine and vacuum equipment are used is solved.

This invention discloses a heterocyclic polyarylamide-polyhydroxyarylamide precipitated fiber, its preparation method, and a heterocyclic polyarylamide-polybenzodioxazole paper, belonging to the technical field of high-performance organic fiber and paper preparation. The preparation method of the precipitated fiber includes the following steps: A. Preparation of the polymerization solution: 3,3'-dihydroxybenzyl diamine (DHB) and 2-(4-aminophenyl)-5-aminobenzimidazole (DAPBI) are dissolved in an organic solvent containing a solubilizing salt, and then terephthaloyl chloride is added to react and obtain a polymer solution with a solid content of 1-10%; B. Precipitation: After degassing, filtering, metering, and spinning, the polymer solution is mixed with a coagulation bath and precipitated to obtain the heterocyclic polyarylamide-polyhydroxyarylamide precipitated fiber. A heterocyclic polyarylamide-polybenzodioxazole paper prepared from this precipitated fiber is also provided. This invention introduces a heterocyclic polyaromatic amide structure through copolymerization, which not only improves the strength and composite properties of the cyclized PBO paper, but also maintains a decomposition temperature comparable to that of pure PBO fiber, exceeding 600℃, demonstrating excellent thermal stability. Furthermore, this method is simple and easy to implement, making it suitable for industrial production applications.

The invention provides a spatial two-rotation and one-movement three-degree-of-freedom parallel mechanism. The spatial two-rotation and one-movement three-degree-of-freedom parallel mechanism comprises a fixed platform, a movable platform and three main branch chains. Each main branch chain supports the movable platform to realize two-rotation and one-movement three-degree-of-freedom movement and comprises a first branch chain and a second branch chain; the first end of the first branch chain and the first end of the second branch chain are in spherical connection with the movable platform through equivalent spherical hinges, the second end of the first branch chain is rotationally connected with the fixed platform, and the second end of the second branch chain is rotationally connected with the fixed platform through a rotating pair. The parallel mechanism is high in bearing capacity, high in rigidity, high in fault-tolerant capability, high in reliability and high in stability, and stable supporting and stable movement of the movable platform can be achieved; spherical surface connection is achieved through equivalent spherical hinges, two-rotation and one-movement three-degree-of-freedom flexible movement is achieved only through a rotary hinge mode, and the parallel mechanism has the advantages of being large in working space, small in accumulative error, timely in motion response and high in motion output efficiency and precision.

The bipolar plate comprises two polar plates, namely an anode plate and a cathode plate, strip-shaped protrusions and block-shaped protrusions are formed on the polar plates in a punching mode, the length direction of the strip-shaped protrusions is consistent with the length direction of the polar plates, the block-shaped protrusions are arranged at the two ends of the strip-shaped protrusions in the length direction, and the strip-shaped protrusions and the block-shaped protrusions are arranged in a staggered mode. The blocky protrusions located at the two ends of the strip-shaped protrusion are symmetrically arranged, and the bipolar plate is formed after the two punch-formed polar plates are connected in a welded mode. The bipolar plate disclosed by the scheme is manufactured by adopting a mode of firstly stamping and then welding, the manufacturing mode is simple, the processing flow of the bipolar plate is simplified, excessive processing technologies and complicated dies are not needed, and the manufacturing cost and difficulty of the bipolar plate are reduced; and meanwhile, the front and back surfaces of the obtained bipolar plate are symmetrical in structure, so that the consistency of contact resistance between the bipolar plate and an electrode can be ensured.

The invention belongs to the technical field of novel micromolecular drugs, and particularly relates to a zwitterionic fluorescent probe based on click chemistry reaction as well as a preparation method and application of the zwitterionic fluorescent probe. The chemical structural formula of the zwitterionic fluorescent probe based on the click chemical reaction is as shown in formula (1): # imgabs0 #, the fluorescent probe is symmetrical in structure, the net charge on the surface of the probe is zeroed due to the introduction of tetra-substituted nitrogen cations in the fluorescent probe structure, and the zwitterionic design enables the probe to have lower tissue background signals and good water solubility, so that the probe can be applied to the field of fluorescence detection. The non-specific fluorescence signal is low, and the probe is suitable for tumor diagnosis and treatment. The synthesis method of the probe is simple and efficient, and is very suitable for industrial production.

The utility model discloses a backward turning and side turning integrated hydraulic plate turnover machine, and relates to the technical field of hydraulic plate turnover machines. The backward turning and side turning integrated hydraulic plate turnover machine comprises a supporting seat and a turnover plate, the turnover plate comprises a backward turning part and a side turning part, and the supporting seat is rotationally connected with the turnover plate; a driving device used for driving the turning plate to rotate is further arranged between the supporting base and the turning plate. According to the plate turnover machine, backward turnover and side turnover are integrated, the usable area of an unloading site and the unloading cost are reduced, the applicability of the plate turnover machine to different unloading types and unloading requirements is improved, the side turnover parts and the backward turnover parts are perpendicular to each other, the backward turnover parts and the side turnover parts jointly form a turnover plate of a T-shaped structure, the overall structure of the turnover plate is symmetrical, and the turnover plate is convenient to disassemble and assemble. And the turning plate can be tidied uniformly and is safe and stable to use.

The invention discloses a winding device, and relates to the technical field of automatic winding, and the winding device comprises four winding assemblies which are respectively located at four vertexes of a rectangle; the winding assembly comprises a mounting base, a lower die and an upper die, the lower die and the upper die can synchronously rotate around a vertical axis; the two transferring assemblies are located on the two sides of the four winding assemblies in the second direction respectively, and each transferring assembly corresponds to two winding assemblies distributed in the first direction at intervals; the transferring assembly comprises a first sliding rail, a second sliding rail, a third sliding rail and a material taking part. For the two winding assemblies which are distributed in the first direction at intervals, when one winding assembly conducts the winding process, the other winding assembly is matched with the transferring assembly to conduct the transferring process; the mounting base and the transferring assembly are located on the two sides of the upper die in the second direction, and the four winding assemblies are all arranged outwards. According to the winding device, multi-station efficient operation is guaranteed, meanwhile, the structure of the winding assembly can be simplified, and the observability and maintainability of equipment are improved.

The present invention relates to the field of vibration isolation technology. The purpose is to provide a three-way decoupled parallel vibration isolation platform with adjustable stiffness, which has vibration isolation capabilities in three directions, and the stiffness in each direction is decoupled and adjustable. The technical solution is a three-way decoupled parallel vibration isolation platform with adjustable stiffness, comprising a frame, an end platform, and three branches connected in parallel between the frame and the end platform and having the same structure, characterized in that: the proposed parallel vibration isolation platform has a symmetrical structure, has vibration isolation capabilities in three directions in space, has decoupled stiffness in each direction, and can be adjusted through a third movable pair and a fourth movable pair, and can be used in the fields of precision instruments, shipborne stable platforms, etc.

The utility model discloses a linear ultrasonic motor vibrator, the outer surface of the vibrator is partially or completely formed by a rotary body structure, the vibrator is provided with a main body and connecting parts located at the two ends of the main body, the vibrator is of a symmetrical structure, the connecting parts are symmetrically arranged at the two ends of the main body, and the connecting parts are connected with the main body. The included angle between the connecting portion and the body is larger than or equal to 90 degrees and smaller than 180 degrees. The outer surface of the linear ultrasonic motor vibrator is partially or completely formed by the rotary body structure, the structure is symmetrical, simple and reliable, the linear ultrasonic motor vibrator can be manufactured in a turn-milling machining mode, machining modes similar to linear cutting and the like are avoided, the machining difficulty of the vibrator is remarkably reduced, and the machining efficiency of the vibrator is improved. The processing time required by the oscillator is shortened, and the processing efficiency is improved.

The invention discloses an ultra-soft flat cable with anti-electromagnetic interference capability and a preparation process thereof, and relates to the technical field of flat cable preparation, and the preparation process mainly comprises the following steps: S1, selecting a copper foil as a conductor, respectively laying an insulating material on the upper surface and the lower surface of the copper foil to form an insulating material-conductor-insulating material three-layer structure, and carrying out hot pressing and cooling solidification to obtain a conductor-insulating material three-layer structure; forming an insulating material coating the outer surface of the conductor to obtain a flexible flat cable; and S2, cutting the flexible flat cable, detecting the conductivity, and packaging after the flexible flat cable is qualified. The insulation material is obtained by mixing a GO / PET composite material and a filler, co-extruding and carrying out injection molding, and the GO / PET composite material contains isosorbide and 1, 4-cyclohexanedimethanol. The isosorbide can reduce gaps between molecular chains, block permeation of small molecules and improve the heat resistance of the composite material, and the 1, 4-cyclohexanedimethanol is good in heat stability, has certain rigidity and can improve the impact strength of the composite material.

This invention belongs to the field of vehicle vibration control technology and discloses a dual-valve, dual-capacity symmetrical integrated adjustable shock absorber, including a main hydraulic cylinder, dual electrically controlled adjustable valves, dual capacities, and symmetrical oil circuit connectors. The piston inside the main hydraulic cylinder divides the cylinder body into an upper working chamber and a lower working chamber; the dual electrically controlled adjustable valves include independently set tension-side and compression-side adjusting valves; the dual capacities are a tension stroke spiral tube and a compression stroke spiral tube, both adopting a spiral hollow high-pressure pipeline structure. The symmetrical oil circuit connectors seal and connect the main hydraulic cylinder, the two sets of adjusting valves, and the two sets of spiral capacities, forming two physically isolated, functionally independent oil circuits. This invention abandons the traditional single-valve, single-pipe coupling architecture and adopts a stroke decoupling layout. The dual valves independently control the oil flow to achieve continuously adjustable damping force, and the dual capacities provide directional capacities for their respective strokes. The valve-pipe integrated structure optimizes the oil circuit pressure transmission characteristics, enabling completely independent control of compression and tension stroke damping and capacities, overcoming the inherent defects of parameter coupling in existing technologies.

The application discloses a compound, a catalyst, an olefin polymer and a preparation method thereof. The structure of the application is shown in formula (I): wherein, Ar is independently selected from substituted or unsubstituted azobenzene. The application synthesizes a new compound, and the compound has photoresponsiveness. When the catalyst prepared by using the compound as a ligand is irradiated by ultraviolet light, the azobenzene group in the molecule undergoes cis-trans isomerization, the change of the catalyst property is caused, and the change of the polymerization result is caused, namely, the same catalyst of the application realizes the preparation of polyethylene with different molecular weights, and the polyethylene catalyst for regulating the structure of polyethylene by light is successfully prepared.

The utility model discloses a variable mode walking mechanism for all terrain vehicle, including track body, drive wheel body, action support, mobile arm assembly and hydraulic cylinder, the track body is all rubber flexible track, drive wheel body is arranged in the track body and is in contact with the inner wall of track body, action support is arranged on drive wheel body, two mobile arm assembly symmetrical arrangement is on drive wheel body and is connected with action support, two hydraulic cylinders symmetrical arrangement is on drive wheel body, and hydraulic cylinder piston end is connected with mobile arm assembly, this variable mode walking mechanism for all terrain vehicle, simple and reasonable structure, clever design, to realize different track body ground contact length and ground contact area, ensure the high passability under the soft ground, the obstacle passing performance and the high mobility performance under the hard ground, the whole structure symmetry, the processing and manufacturing aspect, system stability is good.

The invention belongs to the field of organic electroluminescent materials, and discloses a host material, a preparation method, an organic electroluminescent material containing the host material, and an organic electroluminescent device. The structure of the main body material is as shown in a chemical formula I: # imgabs0 #. After the main body material provided by the invention is applied to the organic electroluminescent device, the service life of the device can be prolonged, the driving voltage can be reduced, and the luminous efficiency of the device can be improved.

The present invention relates to a toilet elbow production mold and a manufacturing process thereof, including a left mold and a right mold, the left mold including a drainage and exhaust inner layer and a waterproof and air-proof layer stacked from the inside to the outside, at least one air-permeable cavity is provided inside the drainage and exhaust inner layer or between the drainage and exhaust inner layer and the waterproof and air-proof layer, the left mold is provided with at least one air-permeable hole, and the air-permeable hole is connected to at least one air-permeable cavity. The present invention relates to the field of toilets, when the elbow is demoulded, compression molding air is injected through the air-permeable hole, and the air enters the air-permeable cavity through the air-permeable hole, and the waterproof and air-proof layer ensures that the gas does not flow to the back of the left mold, and all the gas flows to one side of the elbow through the drainage and exhaust inner layer, so that a larger air mold is formed between the elbow and the left mold, and the elbow is automatically separated from the left mold through the air mold; the technical problem that the toilet elbow is difficult to demould and is easy to cause damage to the elbow or the toilet is solved.

The utility model discloses a kind of hydraulic retarder shafting structures, including a pair of outer spline hollow flange plate, retarder spline shaft, a pair of tapered roller bearings, a pair of shaft sleeve, stator, rotor, retarder shell, tension bolt, flange nut, multiple oil seals, O-ring and a pair of gland cap.The utility model retarder shafting structure makes retarder can be assembled as independent individual on whole vehicle drive train, improves selection flexibility, reduces matching application cost;Realize that retarder is matched as a separate whole, does not need to be integrated on gearbox, reduces concurrent fault brought by combination assembly with gearbox.

This application relates to the field of monitoring technology, and more specifically, to a radiation-resistant gimbal camera with strong sealing performance, comprising: a mounting base with a connecting shaft; a housing body with a hollow rotating boss at one end; and a mechanism disposed at the other end of the housing body; wherein, a bearing is disposed within the rotating boss, the connecting shaft passes through the rotating boss and extends into the housing body, and the connecting shaft is rotatably connected to the rotating boss and the housing body via the bearing; a first annular sealing groove is also formed on the inner wall of the rotating boss, and a first annular sealing ring is disposed within the first annular sealing groove, and the first annular sealing ring is interference-fitted with the connecting shaft; the mounting base is provided with an annular groove, and the rotating boss is provided with an annular protrusion, the annular protrusion being embedded in the annular groove. This application effectively ensures dynamic sealing between the mounting base and the housing body by setting up multiple layers of sealing.

This invention discloses an arithmetic logic circuit suitable for balanced ternary systems, comprising a unary balanced ternary operation circuit, a balanced ternary half-adder circuit, a balanced ternary full-adder circuit, and a balanced ternary multiplier circuit. Single-input logic conversion is achieved through the combination of polarized ternary inverters and transistors. The half-adder consists of a basic unit and a transmission gate, realizing two-bit summation and carry output. The full-adder employs two cascaded half-adders and optimizes the carry path, significantly shortening the critical path and reducing the number of transistors. The multiplier uses the basic unit as the control core and combines it with a standard ternary inverter to achieve accurate multiplication. This invention overcomes the interconnection bottleneck of traditional binary logic, avoids the high hardware overhead of unbalanced ternary logic circuits in signed number calculations, and avoids the accuracy loss of approximate calculations in existing balanced ternary logic circuits. It has advantages such as simplified structure, low latency, low power consumption, and accurate operation, and is suitable for high-performance computing scenarios such as artificial intelligence, big data, and very large-scale integrated circuits.

The present invention belongs to the field of liquid ring compressors, and proposes a self-balancing multi-stage liquid ring compressor, including a base, a motor, a coupling, a rotating shaft, a rear-stage pump, a front-stage pump, a front-stage impeller, a rear-stage impeller, a connecting pipe, a front support assembly, a rear support assembly and a self-balancing spacer, wherein the self-balancing spacer includes a sleeve, and the interior of the sleeve is provided with two axially spaced balance ring groups, and the interior of the balance ring group is provided with a self-priming hydraulic balance bearing bush assembly, and the self-priming hydraulic balance bearing bush assembly is used to balance the axial load and establish an oil film system that cooperates with the rotating shaft. The outer side of the sleeve is provided with three hydraulic buffers distributed in a herringbone shape, and the pressure end of the hydraulic buffer radially extends and contacts the circumferential side of the balance ring group. The present invention has a reasonable design, a simple structure, good dynamic balance performance, is conducive to ensuring the stability of the working pressure and is conducive to extending the actual service life of the equipment, and is suitable for large-scale promotion.

The invention relates to the technical field of data transmission, and discloses a cross-device data transmission method and device.In cross-device data transmission, the working frequency of a first device executing sending operation is higher than the highest working frequency of a second device, and the bit width of a data interface used for sending by the first device is smaller than the bit width of a data interface of the second device. The method is applied to first equipment, and comprises the following steps: dividing original data into at least two sub-data segments with the same bit width; configuring first linear feedback shift registers with the same number as the sub-data segments to form a first driving chain; wherein the initial state of each stage of first linear feedback shift register except the first stage in the first driving chain is determined by parallel data output by the adjacent preceding stage of first linear feedback shift register in the current main clock period; and performing scrambling operation on the corresponding sub-data segments based on each level of first linear feedback shift register to obtain scrambled sub-data segments, and sending the scrambled sub-data segments to the second device.

The invention belongs to the technical field of novel small-molecule drugs, and particularly relates to a zwitterionic fluorescent probe containing a dimer targeting ligand and a preparation method and application thereof. The chemical structural formula of the zwitterionic fluorescent probe containing the dimer targeting ligand is as shown in formula (1): # imgabs0 #, the fluorescent probe can be used for near-infrared fluorescence imaging of tumor targeting, and the structure of the fluorescent probe contains two same tumor targeting ligands, so that the zwitterionic fluorescent probe has a better targeting function compared with a single targeting ligand. The introduction of the alkaline amino acid in the fluorescent probe enables the charge on the surface of the probe to return to zero, and the zwitterionic design enables the probe to have a lower tissue background signal. The probe disclosed by the invention is completely symmetrical in structure, simpler in synthesis method, good in water solubility, low in non-specific fluorescence signal and suitable for industrial production and clinical application.

The invention relates to the technical field of powder coatings, in particular to a low-temperature curing powder coating and a preparation method thereof.The preparation method comprises the steps that a low-temperature curing polyurethane oligomer, a curing agent, nanometer titania, a flatting agent and polyethylene wax are evenly mixed, and a premix is obtained; and carrying out melt extrusion, grinding and sieving on the premix, and uniformly mixing the premix with the modified microcapsules to prepare the low-temperature curing powder coating. The low-temperature curing polyurethane oligomer and the modified microcapsule are matched for use, so that the prepared coating film has relatively low curing temperature and also has good antibacterial property and self-healing property, and the overall quality of the coating film is improved; moreover, the obtained powder coating can be cured at a relatively low temperature, energy conservation is better realized in actual use, meanwhile, the mass loss of the modified microcapsule at the temperature is very small, and the quality of a formed coating film is ensured.