15results about How to "Expand application space" patented technology

The invention belongs to the technical field of micro-nano, and particularly relates to a drug-loaded microalgae motor and a preparation method and application thereof, and the drug-loaded microalgae motor comprises a polydopamine / ferroferric oxide / chlamydomonas reinhardtii micromotor and a drug loaded on the polydopamine / ferroferric oxide / chlamydomonas reinhardtii micromotor, the drug is combined with catechol groups on the surface of polydopamine in the polydopamine / ferroferric oxide / chlamydomonas reinhardtii micromotor through covalent bonds; the medicine is an anti-cancer medicine or an anti-inflammatory medicine. The microalgae motor has the characteristics of simple preparation method, good material biocompatibility, high biodegradability and the like. The polydopamine / ferroferric oxide / chlamydomonas reinhardtii drug-loaded micromotor prepared by the invention has the characteristic of self-driving in intestinal juice, so that the polydopamine / ferroferric oxide / chlamydomonas reinhardtii drug-loaded micromotor can target an intestinal disease part under the guidance of an external magnetic field to improve the treatment effect and reduce the side effect of a drug, thereby expanding the application space of a micro-nano motor in the field of biomedicine.

The invention discloses an intelligent semantic analysis and instruction analysis method and system, and the method comprises the steps: enabling a plurality of clients to be connected with an RTC, and subscribing a first audio and video channel; the plurality of clients are respectively connected with the business server and are used for realizing real-time data interaction and business logic processing; audio and video screen stream data are obtained through the RTC, and audio signals in the audio and video data are converted into text information; obtaining the text information and context information of the text information, and performing instruction identification on the text information; and calling a corresponding service interface based on the identified instruction to complete the operation or task of the instruction. According to the method, the accuracy, the real-time performance and the flexibility of voice interaction can be remarkably improved, the application space of the intelligent voice technology in a multi-person cooperation scene is expanded, and an innovative interaction mode is brought to the vertical fields of intelligent conferences, online education and the like.

The invention discloses a method for improving the interlayer performance uniformity of a large-size high-toughness 7xxx aluminum alloy pre-stretched super-thick plate, and relates to the field of improvement of interlayer performance differences of high-strength aluminum alloy pre-stretched super-thick plates. The method aims at solving the problems that in the subsequent part machining and application process of the 7xxx alloy super-thick pre-stretched thick plate, the performance difference of a plate thickness layer is large, the damage resistance of the position where the performance of the plate is weak is reduced, the part loses efficacy, and the model safety is reduced. The method comprises the steps of controlling the uniformity of cross-section structure components of a large-size cast ingot, performing strong rolling deformation of plate interlayer performance uniformity, and performing strong quenching for improving the hardenability of the plate. According to the plate prepared through the method, the bottleneck that the comprehensive performance of the plate is synergistically improved is broken through, the overall performance of the thick plate is improved, the service life of parts is prolonged, the structural safety is enhanced, and the market competitiveness of products is improved. The method disclosed by the invention is used for controlling the interlayer performance uniformity of the 7xxx large-specification, super-thick and ultrahigh-strength aluminum alloy pre-stretched thick plate.

The present application is suitable for the technical field of geological data collection, and provides an unmanned geological data collection control method and system. The present application determines a geological collection target by acquiring geological collection requirements, plans an unmanned collection path, controls flight, shooting and transmission of unmanned geological collection, identifies geological collection data, calculates an expanded collection radius when there is no geological collection target, plans an expanded collection path, and controls corresponding expanded collection until a geological collection target is identified. The present application can determine a geological collection target, plan an unmanned collection path, control flight, shooting and transmission of unmanned geological collection, identify and judge a target, calculate an expanded collection radius when there is no geological collection target, control expanded collection, and identify a geological collection target until a geological collection target is identified. The present application can explore geological data collection with a clear target, and realize intelligent and unmanned geological data collection control.

The invention relates to a high-dispersion organic-inorganic composite flexible thermoelectric material and a preparation method thereof. The preparation method of the high-dispersion organic-inorganic composite flexible thermoelectric material comprises the following steps: (1) adding a carbon nanotube into a conjugated polymer A solution for dispersion, centrifuging and collecting a supernatant, then cooling or evaporating and concentrating the supernatant to separate out a solid, and filtering to obtain a conjugated polymer B; washing to remove the outer-layer conjugated polymer A which is not combined with the carbon nano tube by virtue of an intermolecular force, so as to obtain the high-dispersion carbon nano tube of the conjugated polymer A coated with the molecular layer thickness; and (2) mixing the high-dispersion carbon nanotubes coated with the molecular layer thickness conjugated polymer A with a conductive polymer B solution to form a film preparation solution, carrying out film formation to obtain an organic-inorganic composite flexible thermoelectric film, and then soaking the organic-inorganic composite flexible thermoelectric film in a doping solution, the high-dispersion organic-inorganic composite flexible thermoelectric material is obtained.

The invention discloses a metal thermal expansion coefficient double-end-face measuring method and device, the device comprises a laser light source system, a first interference system, a second interference system, a vacuum tube furnace, a temperature controller, a metal rod, an observation screen and the like, the laser light source system generates laser beams with stable frequency; the first interference system measures the elongation of the metal left end face; the second interference system measures the elongation of the metal right end surface; heating the metal rod in a vacuum tube furnace; the temperature controller realizes heating and temperature control of the vacuum tube furnace; after being heated, the metal rod extends in the axial direction; and the observation screen shows interference fringe swallowing. Starting heating control, recording an actually measured temperature value on the sample and respective swallowing numbers of the circular rings on the first observation screen and the second observation screen in a specific temperature interval, and adding the two ends after temperature measurement is finished to calculate the linear expansion coefficient of the measured metal. According to the double-end-face measuring method and device for the metal thermal expansion coefficient, the vacuum tube furnace is adopted for heating the metal rod, heating is uniform, and the heat preservation performance is good.

An open-fire-free stove is characterized by comprising an insulating shell, an insulating heat-insulating layer, a graphene heating disc and a heat conducting panel, the insulating shell is provided with an inner cavity, and an opening is formed in the upper end of the insulating shell; the insulating heat-insulating layer is arranged in the inner cavity of the insulating shell; the graphene heating disc is arranged on the insulating layer; the heat conduction panel is arranged on the opening of the insulating shell, and the bottom of the heat conduction panel is tightly attached to the upper end face of the graphene heating disc. The graphene heating disc adopts graphene as a heating resistor, so that the energy loss is small, the power consumption is small, and electric energy is saved.

The present application relates to polyester material, disclose a kind of aliphatic-aromatic polyester and its preparation method and application.The light transmittance of the aliphatic-aromatic polyester is greater than 90% when the thickness is 5-100mm, and the elongation at break of the aliphatic-aromatic polyester is 50-1050%.The preparation method comprises the following steps: (1) under esterification reaction conditions, aliphatic diol monomer containing the structure shown in formula (I), aromatic monomer containing the structure shown in formula (II) and catalyst are mixed to carry out first stage reaction, and obtain prepolymer;(2) under polycondensation reaction conditions, the second stage reaction is carried out to the prepolymer.The aliphatic-aromatic polyester not only has good toughness, but also has good light transmission performance.

The utility model relates to the field of workpiece polishing processing, concretely relates to a profiling polishing device, including polishing subassembly and be used for installing the support of polishing subassembly, the support includes base and installs the front support and rear support on the base, the base below is provided with the wheel subassembly who moves along workpiece datum plane, be provided with telescopic mechanism on the front support, and the telescopic mechanism includes pivot, the guide rod who is worn on the pivot and the spring who sets up on the guide rod, be provided with the adjusting mechanism who is used for adjusting the angle of polishing subassembly on the rear support, the utility model restraints device motion trajectory on the workpiece surface geometry feature, makes the polishing piece passive recurrence workpiece appearance, thereby realizes profiling polishing operation, reduces the influence of artificial factor, and provides the pre -tightening force through the spring, realizes the real -time compensation of workpiece processing surface local undulation, guarantees stable contact pressure again, guarantees the polishing quality.

The invention provides a thermosetting resin composition and application thereof. The thermosetting resin composition comprises the following components in parts by mass: 100 parts of epoxy resin, 10-45 parts of a phenolic curing agent, 10-60 parts of a lignin compound, 2-15 parts of a performance additive and 5-35 parts of a charring agent. Through the design and compounding of the components, a rich chemical cross-linked network structure is formed in a cured product of the thermosetting resin composition, and the thermosetting resin composition is used for prepregs, laminated boards and metal foil-clad laminated boards, so that the carbon dioxide emission in the life cycle of the boards is reduced, and the environmental pollution is reduced. The heat resistance, humidity and heat resistance, flame retardance, cohesiveness, electrical property and other comprehensive properties are excellent and are obviously higher than the IPC standard, and the application requirements of printed circuits are met.

A double-line ship lock mutual-charging and mutual-discharging self-balancing water conveying system comprises a first lock chamber, a second lock chamber, a first flow guide opening, a second flow guide opening, a mutual-charging and mutual-discharging water conveying system and a main water conveying system, wherein the first flow guide opening and the second flow guide opening are formed in the middle of the first lock chamber and the middle of the second lock chamber respectively; the mutual-filling and mutual-discharging water conveying system comprises a first inlet and outlet, a second inlet and outlet and a mutual-filling and mutual-discharging gallery, wherein the first inlet and outlet and the second inlet and outlet are located at the bottoms of the first flow guide opening and the second flow guide opening correspondingly. The first flow guide opening and the second flow guide opening are located in the center of the water area plane of the first lock chamber and the center of the water area plane of the second lock chamber, the symmetry center of the water conveying system in the upper half lock chamber and the water conveying system in the lower half lock chamber and the confluence and diversion center of water flow of the main water conveying system and the mutual-filling and mutual-discharging water conveying system. Mutual filling and mutual discharging self-balancing water delivery can be achieved, the ship lockage safety is improved, the number of mutual filling and mutual discharging galleries and valves is correspondingly reduced, the ship lock operation accident probability is reduced, operation management is simplified, and the ship lock operation efficiency is improved.

The invention provides a recombinant purine nucleoside deaminase and application thereof, the recombinant purine nucleoside deaminase is obtained by connecting a gene sequence as shown in SEQ ID NO.1 with a PET carrier and adding an HIS tag, and the amino acid sequence of the recombinant purine nucleoside deaminase is as shown in SEQ ID NO.2. According to the invention, the xanthine nucleoside is obtained by constructing and expressing an engineering bacterium of a recombinant purine nucleoside deaminase and trying to take guanine nucleoside as a substrate and catalyzing the substrate by an engineering enzyme. Compared with chemical synthesis, the process method disclosed by the invention has the advantages of low cost, high conversion rate, simple process, safety and environmental friendliness, and the application space of xanthine nucleoside can be greatly expanded.

The invention discloses a preparation process of a Ti-MOF / BiOF composite material, and relates to the field of photocatalysis of nano materials. The preparation method comprises the following steps: putting N, N-dimethylformamide (DMF), methanol, terephthalic acid and tetrabutyl titanate (TBOT) into a reactor lined with polytetrafluoroethylene, keeping the temperature of 150 DEG C for 24 hours, collecting, washing, drying and activating to obtain Ti-MOF. The preparation method comprises the following steps: respectively dissolving bismuth nitrate and NaF in ethylene glycol and water, carrying out ultrasonic dissolution, and then adding a proper amount of Ti-MOF into the bismuth nitrate solution; under stirring, dropwise adding the NaF solution into the bismuth nitrate solution, transferring the mixed solution into a reaction kettle for reaction, cooling, cleaning and drying to obtain the Ti-MOF / BiOF composite material. The material has good adsorption performance and photocatalytic performance, and can efficiently degrade novel perfluorinated / polyfluorinated compounds in water under simulated sunlight.

The invention discloses a high-toughness PA composite material and a preparation method thereof, and relates to the technical field of PA composite materials. The invention discloses a high-toughness PA composite material. The composite material is prepared from the following raw materials in parts by weight: 60 to 70 parts of polycaprolactam resin, 8 to 12 parts of maleic anhydride grafted polyolefin elastomer, 5 to 8 parts of modified nano calcium carbonate, 10 to 15 parts of modified glass fiber, 0.2 to 0.4 part of antioxidant 1098, 0.1 to 0.3 part of antioxidant 168, 0.3 to 0.5 part of zinc stearate, 3 to 5 parts of ethylene-vinyl acetate copolymer, 1 to 2 parts of organic montmorillonite and 0.5 to 1 part of titanate coupling agent NDZ-101. 0.8 to 1.2 parts of a caprolactam chain extender, and 0.1 to 0.2 part of dibenzylidene sorbitol. According to the high-toughness PA composite material, the polycaprolactam resin is used as a basis, and the modified nano calcium carbonate and the modified glass fiber are matched to enhance toughness and strength, so that the product is high in toughness and good in practicability.

The present invention provides a primer set, a modified primer set and an application thereof for detecting Nipah virus, and belongs to the field of inspection and quarantine technology. The present invention designs primers for the G protein gene and the P protein gene of the Nipah virus, and the designed primers have the advantages of high sensitivity and good specificity, and can be used in combination with microfluidics and colloidal gold methods. The microfluidics technology is used to complete the amplification of the target fragment in the chip, and finally the colloidal gold technology is used to achieve the visualization result, which is convenient, simple, highly sensitive and repeatable. The reaction of the present invention is completed in one step from RNA to amplification in the reaction chamber of the microfluidic chip, eliminating the two-step reaction from reverse transcription to amplification, reducing the pollution from opening the cover, and avoiding the occurrence of false positive results. The detection lower limit of the present invention is not higher than 1048 copies / μL.