56results about How to "Inhibit entry" patented technology

The invention relates to the technical field of epoxy resin paint, and discloses waterborne epoxy paint suitable for containers and a preparation method of the waterborne epoxy paint. A component A of the waterborne epoxy paint comprises, by weight, 100 parts of waterborne epoxy resin and 0.5-0.8 part of a flash rust inhibitor; the component B comprises 6-8 parts by weight of a polyamide curing agent, 5-12 parts by weight of an organosilicon sulfonate polyurethane toughening agent and 0.2-1 part by weight of graphene oxide; the organic silicon polyurethane flexibilizer can play a role of a dispersing agent, the dispersity of graphene in the waterborne epoxy paint is improved, the main chain of the organic silicon polyurethane flexibilizer contains imino groups, the organic silicon polyurethane flexibilizer can be subjected to a curing reaction with epoxy resin, a flexible organic polysiloxane molecular chain is bonded into an epoxy resin molecular chain, and the flexibility of the waterborne epoxy paint is improved. A good toughening effect is achieved, so that the flexibility, the impact resistance and the corrosion resistance of a paint film are improved.

The invention provides magnesium phosphate cement-based concrete. The magnesium phosphate cement-based concrete is prepared from the following raw materials in parts by weight: 10-20 parts of phosphate, 30-50 parts of active magnesium oxide, 0.5-3 parts of a retarder, 5-15 parts of a mineral admixture, 0.5-4 parts of a functional additive, 20-30 parts of fine aggregate, 2-5 parts of reinforced fibers and 10-28 parts of water. The invention also provides a preparation method of the magnesium phosphate cement-based concrete. The magnesium phosphate cement-based concrete provided by the invention has a multi-layer anti-corrosion barrier, a compact microstructure, an intelligent ion barrier and good environmental adaptability, and can meet the use requirements in complex and severe environments.

The invention discloses an information updating method and device, a storage medium and an electronic device, and relates to the technical field of smart home, the information updating method comprises the following steps: sending a first request instruction to a cloud server, and obtaining a first key and a target random number sent by the cloud server in response to the first request instruction; processing acquired target biological information based on the first key to obtain encrypted data, the biological information including the target biological information; sending a second request instruction to the target device; the second request instruction is used for instructing the target device to use the first preset algorithm to generate a reference key according to the target random number and the device information of the target device, and obtaining the target biological information based on the reference key and the encrypted data, and adding or deleting the target biological information in a biological information list of the target equipment based on the first request instruction.

The invention relates to the technical field of coatings, and discloses a preparation process of a waterproof coating for roads and bridges, which comprises the following steps: reacting polyester polyol, an isocyanate monomer, 4-N, N-bis (2-hydroxyethyl) aminopyridine-2-formic acid and the like, and then adding water, nano cellulose, copper salt, a neutralizer, pigment and the like to obtain the waterproof coating for roads and bridges. According to the invention, copper ions are respectively coordinated with pyridine-2-formic acid of polyurethane and hydroxyl of nano-cellulose to play a role of a cross-linking agent, and the polyurethane and the nano-cellulose are subjected to ionic cross-linking, so that the interface bonding performance of the polyurethane and the nano-cellulose is improved, and the nano-cellulose has a better reinforcing effect; a paint film of the paint has higher pencil hardness, impact resistance and mechanical properties. Meanwhile, the waterproof and anti-corrosion performance is good, and good practical application is achieved in the fields of roads, bridges and the like.

The invention relates to the technical field of acrylic resins, and discloses a method for preparing a fluorine-silicon-containing anticorrosive acrylic resin coating, comprising mixing a monomer solution and an initiator solution, reacting the mixture, then adding a fluorine-silicon acrylamide monomer to react, adding dilute ammonia, a defoamer, a leveling agent, and a film-forming aid, and mixing the mixture to obtain a fluorine-silicon-containing anticorrosive acrylic resin coating. The fluorine-silicon acrylamide monomer contains two alkenyl groups, which enables the acrylic resin to form a cross-linked structure, which is beneficial to improving the mechanical properties of the paint film, such as hardness and impact resistance. At the same time, the acrylic resin molecular chain forms a chemical cross-linked network, which can inhibit corrosive media such as water and salt from entering the paint film, further improving the water resistance and salt spray resistance of the paint film, and showing better water resistance, salt spray resistance, and anticorrosion performance.

The invention belongs to the technical field of process form design, and particularly relates to a lightweight process form intelligent prediction method and system. The method comprises the following steps: S1, obtaining process entity information and component entity information with a uniform structure from each business system, and forming a data set; s2, generating a model dictionary, and performing enhancement training on the model dictionary through a machine learning method according to the data set to obtain a data dictionary; the data dictionary has a data matching function; s3, according to the requirements of different enterprises, importing a data dictionary into the system for providing lightweight data model service; the data model service comprises a prediction component list and an output process form. The method has the advantages that the user can conveniently build the form, intelligent prediction is provided for the building process, the training process does not depend on a large amount of business data, and the method can quickly adapt to continuously changing business requirements of enterprises.

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

The utility model relates to the technical field of chemical ammonia decomposition, and discloses a positive pressure type ammonia decomposition device which comprises a shell, a lining is fixedly connected to the inner wall of the shell, a spacing cavity is formed between the lining and an exhaust pipe, and a gas conveying pipe extending into the spacing cavity is fixedly connected to the wall surface of the shell. The wall face of the inner container is provided with a separation structure for separating the separation cavity, the separation structure comprises separation bodies, the wall face of the inner container is fixedly connected with the multiple separation bodies, the separation bodies can better support the outer portion of the exhaust pipe, deformation of the exhaust pipe caused by temperature difference is restrained, the overall strength of the exhaust pipe is improved, and the anti-explosion performance is further improved. Meanwhile, the separation bodies can separate the separation cavity, and when the external nitrogen supply device stops gas supply or nitrogen in the separation cavity is exhausted, the separation bodies divide the separation cavity into a plurality of independent cavities, gas with pressure in the separation cavity can be prevented from being exhausted rapidly, and the air hammer effect is prevented from being generated.

The present invention discloses a direct injection internal combustion engine piston combustion chamber, including an upper extension of an inverted cone surface connected with a piston top surface; an upper portion of a first step side straight line segment transitioning with a lower arc of a side generatrix of the inverted cone surface; an upper portion of a first step bottom arc smoothly connected with a lower portion of a first step side straight line segment; a lower portion of a raised straight line segment smoothly connected with a first step bottom arc; an upper portion of a raised bottom arc smoothly connected with an upper portion of a raised straight line segment through a raised top arc; an upper portion of a necked opening smoothly transitioning with a lower portion of a raised bottom arc, and a lower portion thereof smoothly transitioning with a combustion chamber bottom arc; an arc at the root of a central boss smoothly transitioning with a combustion chamber bottom arc; wherein the raised straight line segment, the raised top arc, and the raised bottom arc constitute a guide protrusion. The direct injection internal combustion engine piston combustion chamber of the present invention can reduce the generation of soot, and effectively inhibit soot from entering the engine oil of a cylinder wall to protect the cylinder wall.

The application discloses a kind of complex environment-based unmanned aerial vehicle cluster path planning method of improved GBNN algorithm, quantifies forbidden area, performance attenuation area and other environmental complex factors to construct complex environment three-dimensional grid map, combined with unmanned aerial vehicle cluster flight characteristics, set single machine constraint and cluster internal collision avoidance constraint, establish the multi-objective optimization function with path total length, risk, safety as core, based on improved GBNN algorithm, screening candidate neighborhood subset and executing multi-step linear prediction, through path intersection point detection and length-turning cost screening optimal path, after three B-spline curve smoothing processing, output optimal flight path satisfying constraint.The application can effectively reduce the risk of unmanned aerial vehicle cluster path in complex environment, improve path safety and planning real-time, while taking into account path length optimization and collision avoidance ability, so as to improve cluster task execution efficiency.

This application discloses a near-eye display device and a near-eye display apparatus. The device includes an eye-tracking system, an optical display system, and a corrective lens. The eye-tracking system includes a light source module and an image acquisition module. The light source module emits polarized light. The image acquisition module includes a stray light suppression component, which can suppress at least a portion of stray light from entering the image acquisition module. The stray light is polarized light reflected by the corrective lens. The polarization properties of the light transmitted through the stray light suppression component are different from the polarization properties of the stray light reaching the image acquisition module. This avoids stray light formed after the illumination beam is reflected by the corrective lens from entering the image acquisition module, which helps improve image clarity and thus improves the accuracy of eye-tracking calculations.

The invention provides a liquid supply apparatus and an ink jet recording apparatus. The liquid supply device includes a diaphragm pump, a suction unit, a discharge unit, and a filter unit. The filter unit is disposed between the suction unit and the discharge unit and has a filter covering a flow cross-section of the liquid. The suction unit and the discharge unit sandwich the filter unit therebetween, and are disposed so that an inflow chamber of the suction unit and an outflow chamber of the discharge unit face the diaphragm on one side in the reciprocating direction of the diaphragm.

The present invention relates to a work machine, and provides a technique capable of sufficiently cooling an electric motor while suppressing entry of foreign matter into the work machine. A work machine includes a work unit including a work mechanism, an electric motor, and a motor housing, a control device, a base, a rear housing, a front handle, and a rear handle. The base includes a passage portion. The motor housing includes an inner air supply port that opens to the inside of the passage portion and an outer exhaust port that opens to the outside of the work machine. The rear housing includes an outer air supply port that opens to the outside of the work machine and an inner exhaust port that opens to the inside of the passage portion. The working machine has formed therein a cooling air flow path that reaches the outside of the working machine from the outside of the working machine through the outside air supply port, the inside of the rear housing, the inside air discharge port, the inside of the passage part, the inside air supply port, the inside of the motor housing, and the outside air discharge port. When viewed in the front-rear direction, the inner air supply port and the inner exhaust port overlap each other.

A motor with a brake contributes to reducing the size of a cover covering a wire lead-out portion, reducing material cost, and improving waterproof performance and dustproof performance. The motor with the brake comprises a motor shell, a brake shell, a power source wire and a brake wire, the motor shell and the brake shell are assembled in the axial direction, and the power source wire is electrically connected with the brake wire. The power source electric wire penetrates through the motor shell in the radial direction and then is bent towards the brake shell side, and the power source electric wire extends to the axial end face of the brake shell towards the side opposite to the motor shell in the brake shell. The brake wire extends in the brake housing toward a side opposite to the motor housing, and is electrically connected to the power source wire at the axial end face to form an electrical connection portion.

The application discloses a model-driven steel structure welding system and method, relates to the technical field of building steel structure industrial processing construction, and the steel structure welding system generates a welding task data packet through a steel structure BIM model platform, a steel structure welding control device analyzes the welding task data packet, obtains forward model data of a welding object, wherein the forward model data comprises steel structure product information and welding process information of a zero-component BIM model corresponding to the welding object, and a reverse model of the welding object is constructed based on actual size information of the welding object in an actual welding process, wherein the reverse model of the welding object represents a BIM model reflecting an actual state of the welding object, the reverse model of the welding object is compared and analyzed with the forward model data, welding process parameters are calculated, and a steel structure welding robot performs a welding action on the welding object according to the welding process parameters, so that the steel structure welding work efficiency is improved, and the automatic welding quality is effectively guaranteed.

The application is used for analyzing the S1-CTD region of the PEDV S protein crystal structure by means of a machine learning model, and a polypeptide sequence FWKSKR (110766) with potential is screened from the target protein by polypeptide virtual screening technology. The 110766 sequence is artificially synthesized on a solid phase, and the polypeptide is screened by means of ELISA experiment using artificially expressed PEDV S1 protein. The affinity constant of the polypeptide and the target protein is identified by means of surface plasmon resonance experiment (SPR). The cytotoxicity of the polypeptide 110766 is tested by CCK-8 kit. The virus infection inhibiting activity of the polypeptide is tested by means of fluorescent quantitative PCR and indirect immunofluorescence experiment. The results show that the 110766 sequence can significantly inhibit the infection of PEDV.

This invention discloses a monoclonal antibody MM03H against human Mycoplasma pneumoniae CARDS TX, prepared from a hybridoma cell line deposited at the China General Microbiological Culture Collection Center (CGMCC) with accession number CGMCC No. 21420. Currently, there are no commercially available anti-CARDS toxin antibodies, and even fewer ELISA kits targeting the CARDS TX antigen. This invention, for the first time, discloses a monoclonal antibody MM03H against human Mycoplasma pneumoniae CARDS TX protein. Upon binding to the human Mycoplasma pneumoniae CARDS TX protein, it can inhibit the entry of the human Mycoplasma pneumoniae CARDS TX protein across the cell membrane into the cytoplasm.

The application discloses a saline-alkali soil remediation system capable of reducing alkali and salt discharge and a laying method thereof, and relates to the technical field of saline-alkali soil remediation. The saline-alkali soil remediation system comprises a leaching device, a salt-preventing and separating structure, a negative pressure air extraction device and a salt discharge device. The salt-preventing and separating structure comprises a salt-preventing and separating layer which is embedded in a soil main body to separate the soil main body into a surface layer and a bottom layer arranged in the up-down direction. The negative pressure air extraction device is at least partially embedded in the surface layer. The salt discharge device comprises at least one salt discharge pipeline which is embedded in the surface layer and is in communication with the negative pressure air extraction device. The outer surface of the salt discharge pipeline is provided with a water absorption side which is formed by a part of the outer surface of the salt discharge pipeline facing the leaching device. A plurality of water absorption holes are arranged on the water absorption side, and each water absorption hole is provided with non-woven fabric for allowing leaching liquid to enter. The system can effectively remediate saline-alkali soil and stabilize the salt content of the saline-alkali soil at a treatment requirement level.

The invention belongs to the technical field of catalysts, and particularly relates to a bifunctional catalyst for hydro-conversion and deoxidation of organic sulfur in feed gas and a preparation method of the bifunctional catalyst. The catalyst comprises a carrier, an active component I, an active component II, an active aid, a release agent and a pore forming agent. The carrier is modified in a coprecipitation mode, and the negative effects of high-temperature sintering, structural damage and the like are inhibited. The acid and the active auxiliary agent which can interact with the active component are added, so that activity reduction caused by relatively strong acting force between the active component and the carrier and embedding of the active component into a carrier crystal lattice is avoided, and the hydrodesulfurization and deoxidation performance of the catalyst is improved. The pore-forming agent is introduced in the preparation process, so that a rich pore structure can be constructed, the reaction active sites and the diffusion rate of macromolecular organic sulfur on the surface of the catalyst are increased, and the technical problems of pore blockage, catalyst deactivation and the like caused by carbon deposit are effectively solved.

The invention provides a catalyst for treating saline organic wastewater, and a preparation method and application thereof. The preparation method comprises the following steps: preparing a Mn-ZIF-67 precursor, adding Mn-ZIF-67 to a multi-level pore MOR molecular sieve synthesis mother liquor containing an oleophobic modified silicon source, heating and stirring to obtain a gel, adopting a quasi-solid phase crystallization process to prepare an oleophilic multi-level pore CoMn@MOR molecular sieve, and grafting hydrophobic functional groups on the surface thereof to obtain a hydrophobic-oleophilic multi-level pore CoMn@MOR catalyst. The catalyst prepared by the invention can efficiently remove organic matter in saline wastewater, the oleophilic multi-level pore MOR promotes the adsorption of organic matter in the wastewater, the hydrophobic functional groups on the surface inhibit the adsorption of water, and the treatment efficiency of organic matter in the wastewater is improved.

The problem addressed by the present invention is to suppress the entry of snow or water between a detection surface and the inside of a cover. In order to solve the problem, the vehicle lamp with the detection device is provided with a lamp unit and a detection unit. The lamp unit includes a light source and a lens. An accommodating recess is formed on the lens, and the accommodating recess is recessed in a reverse detection direction opposite to the detection direction. The detection unit includes a detection device, a bracket, and a cover. At least one part of the detection device is accommodated in the accommodating recess. The bracket supports the detection device from a side opposite to the detection direction. The cover is provided with a flange protruding in the direction opposite to the detection direction. The flange engages with the bracket at a predetermined engagement portion, thereby attaching the cover to the bracket. The end of the detection device in the detection direction is provided with a detection surface used for detecting an object. The flange is located above the detection device and extends to the reverse detection direction side of the detection surface.

The present invention provides a peritoneal dialysis fluid data management system based on peritoneal dialysis. It includes: a processing module establishes a plurality of peritoneal dialysis logs according to a plurality of preset peritoneal dialysis time periods of a natural day; a trigger module is used to collect a first preset trigger action in each preset peritoneal dialysis time period to generate a trigger signal, collect a second preset trigger action to generate a confirmation signal and send it to an identification and weighing module; the processing module generates an execution signal and sends it to the identification and weighing module; after receiving the execution signal, the identification and weighing module collects a plurality of characteristic data of the peritoneal dialysis fluid for patient confirmation, and sends the plurality of characteristic data to the processing module after receiving the confirmation signal; the processing module marks the log number for the plurality of characteristic data of the peritoneal dialysis fluid and enters them into the peritoneal dialysis log for storage, and when the peritoneal dialysis log is completed, the processing module generates a completion signal and sends it to the trigger module and the identification and weighing module. The technical problem that the peritoneal dialysis patient peritoneal dialysis fluid record is inconvenient and affects the peritoneal dialysis effect in the prior art is solved.

The present application relates to code catalog management technical field, especially for a kind of standardization code catalog management method and system, the present application constructs the standard catalog code base covering multiple geological elements, different geological elements are cataloged data using the mode of subtab classification collection, geological feature change node is automatically identified based on the depth interval of code in each subtable, complete continuous mutually exclusive geological layering processing, through preset description template and code semantic mapping rule, standardization description text in line with geological specification is automatically generated, finally geological layering result, description text and original catalog data are associated storage, realize achievement bidirectional tracing and standardization output.The present application solves the pain points of traditional geological catalog standard not unified, low efficiency, achievement not standard, data not traceable, realizes geological catalog whole-process standardization and automation, greatly improves cataloging operation efficiency and achievement quality.

This application provides a semiconductor wafer metal contact structure and its fabrication method, belonging to the field of semiconductor technology. The fabrication method of the semiconductor wafer metal structure includes the following steps: selecting a semiconductor wafer; cleaning the semiconductor wafer to remove a first oxide layer formed on the surface of the semiconductor wafer due to environmental exposure, and forming hydrogen terminals on the surface of the semiconductor wafer; oxidizing the semiconductor wafer with hydrogen terminals to form a second oxide layer on the surface of the semiconductor wafer; and forming a semiconductor wafer metal contact structure on the second oxide layer. This application can solve the technical problem of the non-ideal Schottky barrier caused by factors such as interface states when metal contacts a semiconductor in related technologies.

This invention relates to the field of coating technology and discloses a high-bonding-energy rare-earth nano-coating, its preparation method, and its application. The coating of this invention comprises 35-52 parts by weight of silica, 12-23 parts by weight of hydroxide, 0.3-0.8 parts by weight of lanthanum complex, and 26-34 parts by weight of filler, etc. The lanthanum complex tightly bonds the metal substrate to the silicate coating, improving the bonding energy and adhesion strength between the coating and the metal substrate, making the coating less prone to peeling. The lanthanum complex contains phthalonitrile groups. During high-temperature heat treatment, phthalonitrile undergoes self-crosslinking and cyclization to generate phthalocyanine and other aromatic heterocyclic structures with high-temperature resistance, which is beneficial to improving the heat resistance of the coating. Simultaneously, the formed chemical crosslinking system enhances the crosslinking degree within the silicate coating, inhibiting the entry of corrosive media such as acids and alkalis into the coating matrix, and improving the coating's resistance to acid and alkali corrosion.

This application discloses a smart book borrowing and returning method, device, and medium based on an SDN controller, to solve the technical problem of gaps in book availability due to the need for management personnel to organize returned books. The method includes: configuring corresponding two-dimensional identification codes for several book storage slots in a library bookshelf and affixing them to the corresponding book storage slots; generating unique identification codes for books to be entered and affixing them to preset positions on the corresponding books; scanning the two-dimensional identification codes of the book storage slots and the unique identification codes of the books, and obtaining the scanning information through the SDN controller to complete the entry operation; querying the storage information of the books to be borrowed in the smart book borrowing and returning system to find the books and scanning the two-dimensional identification codes of the book storage slots and the unique identification codes of the books to complete the borrowing operation; and when returning the books, finding the book storage slots based on the book storage information in the user's borrowing records and scanning the two-dimensional identification codes of the book storage slots and the unique identification codes of the books to complete the return operation.

The invention provides an HIV-1 (human immunodeficiency virus-1) nano antibody as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The antibody is expressed by fusing a His tag at the C terminal of a candidate amino acid sequence. The preparation method of the antibody comprises the following steps: immunizing alpaca for multiple times by using a purified antigen cov-NHR VQ capable of simulating an HIV-1gp41NHR tripolymer; peripheral blood of the immunized alpaca is obtained; an intermediate product to be screened is obtained; screening the intermediate product to be screened to obtain a candidate amino acid sequence of the HIV-1 nano antibody; the VHH gene of the candidate amino acid sequence of the antibody is cloned into a prokaryotic expression vector, and nano antibody protein is expressed in the form of VHH-his to obtain the antibody. The antibody can be applied to a modified antibody in a CDR region and preparation of a drug HIV-1 detection reagent for preventing and / or treating HIV-1. The antibody has high specificity and high affinity in a targeted gp41NHR trimer conserved region.

The utility model discloses a micro-fluidic chip and an in vitro detection device, and relates to the field of containers or utensils for experiments, a drainage groove of the micro-fluidic chip extends along a tangent line of a reaction cavity and is arranged on the side wall of the bottom of the reaction cavity, and a first side wall positioned below the tangent line is provided with an arc section. The drainage groove not only tangentially guides liquid flow into the bottom of the reaction cavity to be in contact with a freeze-drying ball so as to prevent the liquid flow from directly flushing and blocking an exhaust flow channel, but also forms a gap with an increased width in the side wall of the reaction cavity, thereby being beneficial to destroying the interface energy at the front end of the liquid flow and enabling a liquid sample to enter the reaction cavity more easily. In addition, the side wall of the top of the reaction cavity is also provided with an intercepting groove which is used as a capillary valve to inhibit the liquid sample from entering the exhaust flow channel before the gas enters the exhaust flow channel. The micro-fluidic chip is provided with a liquid separation cavity, and secondary preferential distribution is carried out on liquid flow. The forked flow channels annularly surround the reaction cavities, the structure is compact, and the reaction cavities connected with the different forked flow channels are partitioned.

The invention provides a device and method for preventing platinum crystallization through a liquid crystal glass channel, and the device comprises a stirring tank, the side wall of the stirring tank is in through connection with an ingress pipe, the top end of the stirring tank is connected with a warming mechanism, a stirring mechanism is arranged in the warming mechanism in a through manner, the top of the stirring mechanism is connected with a motor, and the bottom of the stirring mechanism is arranged in the stirring tank. A supporting assembly is arranged on the top face of the warming mechanism, one side of the supporting assembly is connected to one side of the stirring mechanism, and a cleaning assembly is arranged on the top face of the warming mechanism. S1, feeding and stirring; s2, heating and guiding; s3, blocking and gathering materials; and S4, cleaning adsorbed impurities. The heating mechanism is arranged at the top of the stirring tank, so that platinum-containing impurities volatilized at high temperature in the stirring process are prevented from generating crystals due to sudden temperature drop along with heat radiation rising, the temperature is kept, small platinum crystal grains continue to rise until the small platinum crystal grains are intercepted by the material receiving assembly, crystallization is effectively inhibited from entering stirred molten glass, and the quality of the molten glass is improved. Therefore, the quality of a glass plate produced by the molten glass is improved.