23results about How to "Inhibit entry" patented technology

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 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.

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 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 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.

Provided is a heat recovery ventilator (HRV) capable of suppressing cost increase. The HRV includes a main body case (1), an exhaust fan (2), a supply fan (3), a total heat exchanger (4), and an electrical component box (5). The exhaust fan (2) is provided in an exhaust passage (15) inside the main body case (1). The supply fan (3) is provided in a supply passage (16) inside the main body case (1). The total heat exchanger (4) is provided midway between the exhaust passage (15) and the supply passage (16). The electrical component box (5) is connected to the main body case (1) to house a heat generating component (HPC). The electrical component box (5) has an air introduction port (51) through which air outside the main body case (1) is introduced, and an air discharge port (52) that communicates with the exhaust passage (15) on an upstream side compared to the exhaust fan (2).

This invention relates to the field of energy-saving vacuum pump technology, particularly negative pressure vacuum pumps, including a support assembly comprising a bracket; a pump body comprising a cylinder fixed to the top of the bracket and piston rings reciprocating inside the cylinder; and an intake assembly comprising an intake valve connected to the intake port of the cylinder, an outer tube fixed to the intake port of the intake valve, a venturi tube fixed inside the outer tube, and a composite filter element cooperating within the venturi tube's diffuser. By extending the gas's time within the composite filter element and employing a two-stage "coarse filtration-adsorption" protection system, filtration efficiency is improved, preventing contaminants from entering the vacuum pump and thus reducing frictional resistance and ineffective energy consumption. Furthermore, by significantly shortening the maintenance and replacement time of the intake assembly, the downtime of the vacuum pump due to maintenance is reduced, ultimately lowering the "start-up inrush current" energy consumption after shutdown and the probability of using the backup pump, achieving energy-saving effects.

The invention discloses a high-integration-level dustproof and waterproof design method suitable for aeromagnetic equipment, and relates to the technical field of aeromagnetic equipment design, and the method comprises the following steps: setting constant-pressure breathing buffer layers inside and outside a cavity based on the gas residual characteristics of the cavity in the aeromagnetic equipment; a slow-speed air pressure exchange channel is formed inside and outside the cavity through the balance membrane with the controllable micropore structure, and dynamic balance of air pressure inside and outside the cavity is achieved. Through the constant-pressure breathing buffer layer and the graded moisture absorption composite film, external moisture is effectively prevented from entering and water vapor is captured, the condensation phenomenon is reduced, the corrosion risk is reduced, and long-term stable operation of equipment is ensured. Meanwhile, the low-thermal-conductivity heat insulation sleeve layer disperses the temperature difference and prevents water vapor condensation, electric field distribution is optimized by combining the anti-seepage plating layer and potential balance coating, the anti-condensation, anti-corrosion and anti-short-circuit capacity of equipment is improved, and long-term reliability and precision under the high-integration sealing condition are guaranteed.

Provided is a fishing shoe capable of providing appropriate tension to a lower hem of a gravel guard regardless of the size of the lower hem. A fishing shoe is used together with a gravel protector having an engagement fastener. The shoe has a sole and an upper. The vamp is provided with (1) a first clamped and fixed part which can be clamped and fixed with the clamping and fixing piece and (2) a second clamped and fixed part which is closer to the tiptoe side than the first clamped and fixed part and can be clamped and fixed with the clamping and fixing piece.

The invention relates to the technical field of coatings, and discloses a flexible polyurea insulating moisture-proof coating and a preparation method thereof.The coating comprises 100 parts of polyurea resin emulsion, 10-25 parts of modified aluminum oxide and the like; and adding alumina powder and ureido lysine into the solvent, and stirring for modification to obtain the modified alumina. The modified aluminum oxide powder is uniformly dispersed in a paint film matrix, the volume resistivity and the insulating property are remarkably improved, meanwhile, a large number of ureido groups on the surface of aluminum oxide and ureido groups of polyurea resin form a strong hydrogen-bond interaction, so that aluminum oxide forms crosslinking sites in polyurea, the molecular chain crosslinking degree of polyurea is increased, and the insulating property of the paint film is improved. Water molecules can be inhibited from entering the paint film, the water absorption rate of the paint film is reduced, and the water resistance and humidity resistance of the paint film can be improved.

The utility model belongs to the technical field of flow batteries, and particularly relates to a gas circulation system of a flow battery. The flow battery gas circulation system comprises a positive electrode liquid storage tank, a negative electrode liquid storage tank, a gas inlet pipeline, a gas exhaust pipeline, a gas pressure balance pipeline and a gas transfer device, the upstream end of the air inlet pipeline is positioned above the liquid level of the positive electrode liquid storage tank; the downstream end of the gas inlet pipeline is communicated with the inlet of the gas transfer device; the outlet of the gas transfer device is communicated with the upstream end of the exhaust pipeline; the downstream end of the exhaust pipeline is located below the liquid level of the negative electrode liquid storage tank. And two ends of the air pressure balance pipeline are respectively communicated to positions above the liquid levels of the positive electrode liquid storage tank and the negative electrode liquid storage tank. The gas transfer and reactive gas absorption process is realized, volatile gas and toxic waste gas can be quickly and effectively absorbed, the pressure balance of the positive and negative electrode liquid storage tanks is maintained, the change of active components of the electrolyte during operation is avoided, and the safety and high efficiency of long-time operation of the flow battery are maintained.

The application provides application of an isoxazole compound or a pharmaceutical salt thereof in preparation of a drug for resisting or preventing ZIKV, wherein a structural formula of the isoxazole compound is shown as formula 1. The application shows for the first time that the isoxazole compound shown as formula 1 has extremely strong antiviral activity on ZIKV, can significantly inhibit replication of ZIKV on host cells A549, improve cell survival rate, can inhibit the process of virus entering the host cells A549, and has extremely strong antiviral effect at the cell level, has obvious anti-ZIKV effect, and the isoxazole compound shown as formula 1 can more effectively inhibit the virus when used before or during invasion of ZIKV.

The invention discloses an intelligent paper pulp tallying method and system, and belongs to the technical field of port tallying. The method comprises the following steps: acquiring a paper pulp image by utilizing field equipment and acquiring an automatic counting value by adopting a recognition algorithm; combining a shipping mark verification image uploaded by the mobile terminal to generate electronic receipts with the binding number and vouchers; and transmitting the electronic receipt to a central control terminal for remote comparison and re-checking, and filing and generating a report form after confirming that the electronic receipt is correct. According to the invention, the encryption operation serial number is utilized to ensure that data cannot be tampered, abnormal real-time alarm and on-site correction are supported, and automatic matching with transportation system information can be realized. According to the invention, through an automatic counting and manual verification mode, digitalization and whole-course traceability of tallying operation are realized, and the operation efficiency and accuracy are significantly improved.

The application discloses a railway train approaching early warning protection system based on a CTC system, which comprises a train approaching early warning system, a CTC system and a computer interlocking system. The train approaching early warning system is used for acquiring a construction operation electronic fence in real time and extracting equipment information from the construction operation electronic fence. The CTC system is in communication connection with the train approaching early warning system and is used for generating a blocking instruction according to construction plan information set by itself or the equipment information sent by the train approaching early warning system. The computer interlocking system is in communication connection with the CTC system and is used for executing the blocking instruction to realize signal equipment blocking and route control in a construction operation area. The application can control a locomotive to be unable to enter the construction operation area, thereby preventing collision accidents.

Provided is a valve device capable of suppressing entry of moisture. A valve device (1) is provided with a main body (10), a cylindrical tank (30), a connecting member (20) that connects the main body (10) and the tank (30), a housing (70) that has a cylindrical peripheral wall (71) that surrounds the tank (30), and an annular first closing member (81). The second upper surface (10b) of the main body part (10) is provided with a mounting hole (11) for arranging the connecting component (20). The main body section (10) has an annular wall section (16) that protrudes from the second upper surface (10b) and surrounds the mounting hole (11). The mounting hole (11) is provided with a female thread, and the connecting member (20) is provided with a male thread that engages with the female thread. The first closing member (81) is disposed between the outer peripheral surface of the wall section (16) and the inner peripheral surface of the peripheral wall (71), and is compressed in the radial direction.

The invention discloses a neutralizing monoclonal antibody for resisting feline panleucopenia virus and application of the neutralizing monoclonal antibody, and belongs to the technical field of bioengineering. The antibody comprises a heavy chain variable region (VH) and a light chain variable region (VL), and amino acid sequences of the heavy chain variable region (VH) and the light chain variable region (VL) are respectively shown as SEQ ID NO: 1 and SEQ ID NO: 2; the antibody is an IgG2a subtype and kappa light chain, can specifically bind to FPV VP2 protein, and effectively neutralizes infection of an F81 cell by an FPV-ZZ20230 strain under the dilution ratio of 1: 64. The invention also provides nucleic acid molecules (SEQ ID NO: 8-9) for coding the antibody, an expression vector, a host cell and a preparation method. The antibody can be used for preparing medicines for preventing or treating feline panleucopenia, and can also be used as a detection antibody for ELISA (enzyme-linked immuno sorbent assay), Western blot or indirect immunofluorescence (IFA) diagnostic kits. The antibody is clear in structure and high in neutralizing activity, does not need to be preserved by hybridoma, and has good clinical application and industrialization prospects.