97results about How to "Realize formation" patented technology

The invention provides a subarray-division-based FDA distance-angle decoupling wave beam formation method. With the method, a problem that distance-angle decoupling wave beam formation can not be realized by using the exiting frequency classification array can be solved. The provided method comprises: step one, a frequency classification array is divided into a plurality of sub arrays and frequency stepping values are introduced into the sub arrays respectively, so that a transmitting signal frequency is designed; step three, a subarray-division-based steering vector of a frequency classification array is constructed; step four, a subarray-division-based transmission weight vector of the frequency classification array is constructed; and step five, according to the guiding vector and the transmission weight vector of the array, a distance-angle two-dimensional wave beam formation directional diagram is obtained. According to the invention, the direction of the wave beam main lobe is changed and distance-angle two-dimensional decoupling wave beam formation is realized, so that wave beam control flexibility is substantially improved. The method can be applied to distance-angle domain combined detection of a target and the interference related to a distance can be suppressed.

The invention discloses a tooth modeling method based on dental crown and tooth root characteristics. The tooth modeling method includes the following steps that 1, tooth basis information is determined; 2, the average curvature and the gaussian curvature at a top point of a triangular mesh are determined; 3, the computational processes of the average curvatures and the gaussian curvatures at all the top points of continuous triangular meshes of multiple segmentations of a dental crown are completed; 4, the type of the dental crown is extracted; 5, whether the tooth type is single or not is judged; 6, a tooth model of the single-root tooth is established; 7, the tooth model of the multi-root tooth is established. According to the tooth modeling method, a dental crown model of a single tooth is obtained through a laser three-dimensional scanner, the dental crown and tooth roots are separated, the type of the tooth is determined according to the characteristics of the dental crown, the corresponding tooth root model is established, and the tooth modeling method is high in accuracy, small in calculation quantity, visible, rapid, effective and low in cost.

The invention provides a method for adjusting the time delays of multiple broadband receiving signals. The method may solve a problem of time alignment of broadband signal baseband waveforms under to a large time-delay condition. The method is implemented by a technical scheme comprising: decomposing a time delay difference into a coarse grade and a fine grade and performing coarse-fine time delay difference adjustment on a baseband signal subjected to digital down-conversion and an AD sampling signal subjected to analog-to-digital conversion; sending a radiofrequency input signal and a radiofrequency sampling clock which are subjected to analog-to-digital conversion to a serial-parallel conversion ISerdes module to be converted into D parallel low-speed digital signals; obtaining 3*D pieces of data and D pieces of parallel data of a signal sequence by means of the delay of a fine time delay adjusting module; converting the data in to a digital signal by means of multiphase filtering summation of a multiphase down-conversion filtering extraction module; outputting a signal subjected to time delay adjustment of a first antenna, a second antenna, or an array element, decomposing the signal by a time delay decomposing module into the number of time delay periods controlling two coarse time delay adjusting modules and two fine time delay adjusting modules, adjusting the time delay difference of the broadband signals received by a compensation antenna or array element, and aligning the baseband waveforms of the multiple broadband receiving signals in a time domain.

The invention discloses a seamless boxer shorts and a making method thereof.. The boxer shorts comprise a waist, a crotch, a front piece, a rear piece and two trouser legs, wherein the front piece and the rear piece are connected into a whole in a waistline direction through weaving; the middle part of the front piece is provided with a sac-shaped space which is raised outwards; and the sac-shaped space is in seamless connection with the front piece. The sac-shaped space is formed through a pressed film shaping method. The sac-shaped space which is raised outwards is formed without any sewing, so that the boxer shorts are simple in production process and comfortable to wear.

The invention relates to the technical field of biological materials and clinical medicine, and provides an injection, a preparation method of the injection and application of the injection in dentalpulp regeneration. The injection comprises a composite preparation as a dispersion phase and a dispersion liquid as a continuous phase. The composite preparation comprises a drug, a microcarrier and stem cells, the drug is wrapped in the microcarrier, and the stem cells are attached to the surface of the microcarrier. The dispersion liquid is selected from at least one of a group consisting of a balanced salt solution, a serum-free culture medium and injectable hydrogel. The injection is mainly applied to regeneration of clinical functional dental pulp tissues, and regeneration of dental pulpin affected root canals is realized. By utilizing the injection, the formation of the nerve and vascularized dental pulp-like tissue in the root canal can be realized, the nutrition, defense and sensory functions of the dental pulp tissue are recovered, and the service life of the affected tooth is prolonged.

The invention relates to a method for preparing high-stability nanometer black phosphorus/three-dimensional graphene composite materials, and belongs to the technical field of composite materials. Themethod includes mixing nanometer black phosphorus dispersion liquid and graphene oxide dispersion liquid with each other under inert gas atmosphere conditions at the temperatures of 5-30 DEG C and carrying out ultrasonic treatment to obtain dispersion liquid A; treating the dispersion liquid A by the aid of liquid nitrogen under inert gas atmosphere conditions and carrying out freeze drying to obtain the high-stability nanometer black phosphorus/three-dimensional graphene composite materials. The method has the advantages that graphene oxide can be reduced under ultrasonic conditions under catalytic effects of nanometer black phosphorus to obtain graphene, and excellent bonding effects can be realized by black phosphorene and the graphene in reduction procedures.

The invention aims at providing a two-way-oil-inlet resonance bypass type electronic-control fuel injector comprising a fuel injector head, a fuel injector body, a flow-limiting valve assembly, an electromagnetic valve assembly, a needle valve assembly and a spray nozzle. The flow-limiting valve assembly is located in a pressure storage cavity, and it is ensured that under the condition of the large fuel injection quantity, fuel injection processes of all cylinders are stable. A resonance through hole and a resonance throttling hole are machined in the bottom of the flow-limiting valve assembly, and fluctuation of fuel passing through the flow-limiting valve assembly is reduced according to the wave superposition principle. The electromagnetic valve assembly and the needle valve assembly are arranged on the lower portion. A two-position three-way valve form is adopted for an electromagnetic valve so that the dynamic oil return amount can be decreased. A control slide block is arranged in a control cavity and makes contact with a middle block so as to play a role in decreasing the fuel injection speed at the initial stage of injection and accelerating the needle valve seating response. The two-way-oil-inlet manner is adopted for the control cavity, and therefore the pressure buildup speed is further increased, and the rapid response characteristic of the fuel injector is achieved. No static pressure differences exist in the fuel injector, and the fuel injector is free of static leakage.

The invention discloses a preparation method of a rod-shaped self-assembled spherical zinc-cadmium-sulfur solid solution material. The preparation method comprises the following steps: measuring H2O with a measuring cylinder, adding 10mL of EN (ethylene diamine) to prepare a mixed solution, and performing magnetic stirring and ultrasonic treatment to form a mixed solution A; adding zinc acetate dihydrate and cadmium nitrate tetrahydrate which are taken as raw materials into the mixed solution A, and performing magnetic stirring and ultrasonic treatment to form a mixed solution B; adding L-cysteine which is taken as a sulfur source into the mixed solution B, and performing magnetic stirring and ultrasonic treatment to form a mixed solution C; adding the mixed solution C into an inner liningmade of polytetrafluoroethylene, and performing microwave hydrothermal reaction; and after the reaction is completed, performing centrifugal washing respectively with deionized water and ethanol forseveral times, and then performing drying and grinding to obtain zinc-cadmium-sulfur solid solution material powder.

The invention discloses a motorcade team formation system. The system comprises at least two vehicles which run in a team, wherein a navigation positioning module, a wireless communication module, a lane recognition module and an automatic driving module are mounted on each vehicle in the at least two vehicles; the wireless communication module on each vehicle is connected with the corresponding navigation positioning module and automatic driving module, and is connected with the wireless communication modules of the front and rear vehicles; the navigation positioning module and the lane recognition module of each vehicle are connected with the corresponding automatic driving module; the wireless communication modules are used for realizing intercommunication between the vehicles of a motorcade; the navigation positioning modules are used for positioning the vehicles of the motorcade in real time; the lane recognition modules are used for identifying road sections for driving the vehicles; the automatic driving modules are used for automatically driving the vehicles when the vehicles follow the front vehicles; the at least two vehicles are in a team formation running state; the vehicle at the most front side in the at least two vehicles is a first vehicle, and is driven manually, and the other vehicle is a following vehicle. By adopting the motorcade team formation system, theteam formation of the motorcade can be realized.

The invention relates to a drug-loaded KGN nanofiber scaffold and a preparation method and application thereof, and belongs to the field of preparation of biological scaffolds. The invention disclosesthe drug-loaded KGN nanofiber scaffold. The preparation method comprises the following steps: firstly, modifying the surface of silk fibroin (SF) nanofiber with polydopamine (PD), and loading KGN tothe surface of the nanofiber through EDC/NHS amide condensation reaction by utilizing an amino group of the PD and a carboxyl group of an active drug KGN, so that oxidative stress can be eliminated and inflammatory reaction can be reduced in the early stage, and transformation from an inflammatory phase to a tissue regeneration and remodeling phase is promoted; and meanwhile, continuously and slowly releasing the KGN in the middle and later periods, inducing formation of fibrous cartilage tissues, and finally realizing regeneration of interface tissues. In addition, in-vitro experimental results prove that the drug-loaded KGN nanofiber scaffold has an inflammation regulating function, can promote formation of fibrous cartilage of bone-tendon interface tissues, and has great application potential in interface tissue engineering.

The invention, which belongs to the field of detection methods, in particular relates to a method for quantitative detection of single embryo secreted proteins based on microfluidic droplets. The detection method comprises the steps: taking a capture antibody and a label antibody of a to-be-detected single embryo secreted protein, connecting the capture antibody to an immunomagnetic bead and labeling the label antibody by biotin; mixing the immunomagnetic bead with the to-be-detected single embryo secreted protein and carrying out incubation, carrying out cleaning, mixing the mixture with thelabel antibody and streptavidin-labeled beta-galactosidase and carrying out incubation, and re-suspending the immunomagnetic bead by using a PBS buffer solution; and then detectint he fluorescence intensity by a laser-induced fluorescence detector to obtain the content of the to-be-detected single embryo secreted protein. According to the invention, substrate reaction is catalyzed continuously byusing an enzymatic reaction to generate a fluorescent substance, so that the signal amplification of the to-be-detected protein is realized; and with introduction of the microfluidic droplet technology, the fluorescent substances are enriched quickly to reach the measurable concentration. The detection sensitivity is improved; and the size of the sampled needed by detection is reduced.

The invention discloses a composite material with a rapid blood coagulation effect and a preparation method thereof and belongs to the technical field of biological medicines. The composite material with the rapid blood coagulation effect is prepared from the following raw materials in parts by mass: 8 to 20 parts of chitosan, 7 to 14 parts of salicylaldehyde, 8 to 16 parts of 2-aminoisonicotinic acid, 1.5 to 3.5 parts of ferrous sulfate, 3 to 5 parts of dopa and 10 to 15 parts of disodium hydrogen phosphate. The prepared composite material with the rapid blood coagulation effect has good product stability and high biological safety, has a remarkable effect on blood coagulation, and is simple in process and easy to industrially produce.

The invention discloses a preparation method of an acid-proof green Pickering emulsifier and a Pickering emulsifier thereof. The method include: adding chitosan into a dilute acid solution, and performing stirring to obtain a chitosan acidic solution; adding an anionic surfactant dropwise, and performing stirring to obtain a Pickering emulsifier dispersion liquid; wherein the anionic surfactant comprises sulfonate or benzene sulfonate. The acid-proof green Pickering emulsifier disclosed by the invention endows chitosan with excellent emulsification properties under an acidic condition, enlarges the pH window of chitosan serving as the Pickering emulsifier, can maintain stable under strong acid, and enhances the utilization rate of natural biomass resources. And secondly, the dosage of thesurfactant in the emulsifier is extremely low (less than one tenth of the critical micelle concentration of the surfactant), so that the toxicity and skin irritation caused by the surfactant are greatly reduced, and the emulsifier has good environmental friendliness.

The invention discloses a preparation method of a metallic oxide thin film transistor. The preparation method includes: growing a first conducting layer on an insulating substrate, and photoetching to obtain a gate electrode; growing an insulating layer on the gate electrode; coating an active layer, and photoetching to obtain an active island; and depositing a second conducting layer, and photoetching to obtain a source electrode and a leakage electrode. By irradiating thin films prepared by a solution method, heat treatment temperature of the thin films can be lowered evidently, and metallic oxide can be formed at low temperature.

The invention discloses an intelligent interactive panel. The intelligent interactive panel comprises a liquid crystal display screen and organic glass arranged on the outer portion of the liquid crystal display screen and further comprises a fan, ventilation holes and an air guide channel. The ventilation holes are formed in a shell on the back face of the intelligent interactive panel, and the fan is arranged between the ventilation holes and the liquid crystal display screen; when the fan is turned on, air between the liquid crystal display screen and the organic glass is conveyed to the position of the fan through the air guide channel, and the air is discharged through the ventilation holes. According to the intelligent interactive panel, the fan is used for accelerating air convection on the surface of liquid, therefore, liquid evaporation is accelerated, and water mist is removed and prevented. The intelligent interactive panel is long in service life, durable in effect, clean and environmentally friendly, saves energy, and is simpler to operate and easier to achieve in the producing and processing steps.

The invention provides a preparation method of a flame-retardant low-smoke polystyrene composite. The composite comprises 50 to 60 parts of a polystyrene flame-retardant base body, 10 to 15 parts of a polymer, 5 to 10 parts of a non-melt filler, 5 to 15 parts of modified expansible graphite, 5 to 15 parts of micro-encapsulated red phosphorus, and 1 to 5 parts of carbon black. The preparation method comprises the following steps: mixing the materials; adding the mixture into a crusher; putting the crushed materials into a granulator of which the rotational speed is 50 to 55 r/min for granulation so as to obtain the polystyrene composite, wherein in the machine barrel of the granulator, the temperature of a first area is 170 DEG C, the temperature of a second area is 175 DEG C, the temperature of a third area is 180 DEG C, the temperature of a fourth area is 185 DEG C, and the temperature of a mold is 195 DEG C. The polystyrene composite prepared according to the formula and the technology is more excellent in flame retardancy, lower in smoke, and higher in antistatic property and bifunctionality when being compared with the conventional polystyrene composite, and has a favorable comprehensive mechanical property.

The invention provides a plug connector and a connector assembly. The plug connector comprises: an inner-layer conductive shell; a tail sleeve; a first insulator, wherein a power supply conductive part is arranged in the first insulator, the power supply conductive part comprises a plug contact piece, a second insulator and an elastic washer are arranged outside the plug contact piece, the elasticwasher is in stop fit with the front end surface of the first insulator, and an annular flange is arranged on the outer surface of the first insulator; a shielding conductive part, wherein the frontend of the shielding conductive part is provided with a conductive sheet in stop fit with the annular flange; and a snap spring which is positioned on the rear side of the conductive sheet. The inner-layer conductive shell is provided with a stop step and an annular clamping groove, the distance between the stop step and the annular clamping groove meets the requirement that after the clamping spring is clamped into the clamping groove, the elastic washer is compressed to apply backward acting force to the first insulator, and the annular flange abuts against the conductive sheet on the end face of the clamping spring. A jacking structure does not need to be arranged on the tail sleeve, the structure of the tail sleeve can be simplified, meanwhile, during installation, only the clamping spring needs to be clamped into the annular clamping groove through a tool, and installation is convenient.

The invention discloses a method for friction stir connection of a steel plate with a thickness of 5 mm. The method is characterized by comprising the following steps: firstly, small holes are drilled in a steel plate connecting area, the diameters of the small holes are 1.5 mm, the depths are 1 mm, and the arrangement of the small holes is determined according to the width of the steel plate connecting area; then, mixed medicine powder of Fe powder, Cu powder and gunpowder is filled in the small holes, wherein the gunpowder is 60-70% of the total volume, the Fe powder is 20-30%, and the Cu powder is 5-10%; thirdly, two plates to be connected filled with the mixed medicine powder are fixed on a worktable side by side, and then, a circular pressing plate is driven to quickly rotate to form sealed space between the small holes and the circular pressing plate to urge explosion of the gunpowder in the mixed powder to generate a certain heat; and finally, a stirring head is driven to rotationally advance at high speed, and the explosion heat is used for plastifying metal in the connecting area and extruding to form the connecting area so as to finish the friction stir connection of the plates. The method is simple, excellent in effect and excellent in mechanical performance of the obtained connecting area.

The invention relates to scallop powder and a spray drying method thereof, belonging to the technical field of food science. The scallop powder is milky white and has the due aroma and the taste of shellfish, the loss on drying is 4%-5%, the content of total nitrogen is 3%-5%, the crude protein accounts for 20%-25%, and the content of amino nitrogen is 2%-3%. The invention further discloses the spray drying method of the scallop powder, which comprises the steps of selecting fresh scallop as raw material, de-shelling, and carrying out enzymatic hydrolysis, material preparation and spray-drying for preparing the scallop powder. The method has simple enzymatic hydrolysis process and short enzymatic hydrolysis time, is conductive to improving the flavor of hydrolysate and increasing the content of amino acids and can improve the nutritional value and the seafood flavor of the scallop powder and overcome the shortcomings of high energy consumption, low drying efficiency and the like of freeze-drying. The method realizes the development of fine and deep processing of scallop resources and has an important role for promoting the reasonable processing and the utilization of the scallop resources, forming a processing industry chain of aquatic products, adjusting the industrial structure and improving the economic value.

The invention belongs to the field of building construction, and particularly discloses a splicing internal corner template for building. The splicing internal corner template for building comprises rectangular steel plate bodies, and is characterized in that strip-shaped square tubes are welded on four edges of the back of each plate body; each square tube is provided with uniformly distributed bolt holes; two plate bodies are spliced to be right-angled from the back; the directions and positions of the bolt holes on the square tubes crossed on the two plate bodies have a one-to-one correspondence relationship. The splicing internal corner template for building is simple in structure, convenient to use, reasonable in design, flexible in application, flexible in product assembly and removal and high in bearing capacity, effectively improves the construction efficiency of templates, saves the material of templates, and is beneficial to wide popularization and application.