36results about How to "Address technical deficiencies" patented technology

The invention discloses an inland river ship freeboard detection method based on a deep enhanced neural network. A laser radar and a linked tripod head are set on a high pole on the bank of a river, the tripod head drives the laser radar to adjust a detection height and an orientation angle to scan one side of the ship, ship contour images under different detection parameters are obtained, a reinforcement learning neural network is used as an approximator of a reinforcement learning value function, and ship contour information is input into the reinforcement learning neural network to determine the actions of the current laser radar and the linked tripod head to correctly identify the freeboard of a current ship. According to the method, based on the recognition capability of a convolutional neural network for image recognition, a reinforcement learning algorithm is combined to construct the deep enhanced neural network, the existing technical deficiencies of a deep learning network inthe field of ship overload recognition are overcome, the detection ability of the laser radar for ship freeboard information is improved, and therefore, a technical support is provided for the automatic identification of inland river ship draught.

The invention discloses a distributed cloud computing center selection method, belongs to the technical field of cloud platform data processing, and provides a solution for the problem that computing center selection is high in communication cost in the prior art. According to the method, the computing center of a sub-graph is selected based on the length of the longest path in the sub-graph, and all the vertexes of the sub-graph pass the longest path and only pass the longest path once. The technical defect of a random strategy and a greedy strategy in computing center selection is effectively overcome, virtual machines required by users can be provided, the performance and reliability required for cloud mass data processing are improved, the cost of communication between computing centers is reduced, and the overall unnecessary resource consumption is reduced.

The invention provides a face analysis device and method. The face analysis method comprises that a to-be-detected sample is input to a residual error network module; the trained residual error network module is used to process the to-be-detected sample, the residual error network module comprises residual error blocks which are arranged from the input to the output direction and combined sequentially, and output of the Nth predetermined residual error block among the residual blocks combined sequentially is sent to a residual error deconvolution network module; and the trained residual errordeconvolution network module is used to process the output of the Nth residual error block to obtain a classifcaitn graph, the residual error deconvolution network module comprises residual error deconvolution blocks combined sequentially, and the residual error deconvolution blocks correspond to the first to Nth residual error blocks respectively. Via the face analysis method, the face analysis performance can be improved, and the model size in the method is reduced greatly.

The invention discloses a novel coronavirus SARS-CoV-2 safe replication subsystem and application thereof in screening anti-SARS-CoV-2 drug virus drugs. The novel coronavirus SARS-CoV-2 safe replication subsystem specifically comprises a non-structural protein for encoding novel coronavirus SARS-CoV-2, 5' UTR and 3' UTR of the novel coronavirus SARS-CoV-2, a transcriptional regulation area and a reporter gene, wherein the transcriptional regulation area and the reporter gene can be acted by the non-structural protein of the novel coronavirus SARS-CoV-2. By means of the SARS-CoV-2 safe replication subsystem, high-throughput screening of the anti-SARS-CoV-2 drugs and drug efficacy verification of the drugs can be conducted under the condition that the SARS-CoV-2 safe replication subsystem does not depend on a biosafety three-level laboratory, and operation is easy and convenient.

The invention discloses an evaluation method for comprehensive performance of a pump device water outlet runner. According to the method, based on a CFD three-dimensional constant numerical calculation result of a pump device, sub-item evaluation indexes of five hydraulic performances of a water flow channel are determined, and according to an initial setting scheme of a water outlet flow channel,sub-item evaluation indexes of four structures based on three-dimensional design of the water outlet flow channel of the pump device are determined; And converting the determined 9 sub-item evaluation indexes of the water outlet flow channel to obtain an objective function of the comprehensive performance of the water outlet flow channel, thereby obtaining the evaluation grade of the comprehensive performance of the water outlet flow channel. The defect that only the hydraulic performance of the pump station water outlet flow channel is evaluated in the prior art is overcome, the optimal selection of the water outlet flow channel in the initial setting stage of the pump station is facilitated, the energy consumption of the pump station can be further reduced, and the purposes of energy conservation and consumption reduction are achieved.

The invention relates to a transfusion set with a multilayer composite conduit, which comprises a bottle plug puncture set, a conduit, a dropping funnel, a transfusion needle and the like, and is characterized in that the conduit is a hollow hose which is formed by co-extruding at least two high polymer material layers comprising an inner layer and an outer layer, wherein the tubular outer surface of the inner layer is completely closed by the outer layer, and the conduit is bonded with the dropping funnel by directly extending into the dropping funnel or the conduit and the dropping funnel are communicated through a connector. Through the structural principle, when the conduit is manufactured, the bidirectional adaptability of performance and process can be realized by selecting different materials in a coextrusion mode, i.e. a material having low adsorption or non-adsorption characteristic for a medicament is selected as the inner layer of the conduit, such as polyurethane PU, polypropylene PE or modified polypropylene TPEE and the like to satisfy the performance requirement of no medicament adsorption or light shielding agent leakage prevention and adapt to a traditional production process in a lower-cost mode.

The two-purpose gas burning stove for burning coal and firewood includes stove body, annular water tank, smoke exhausting pipe, circular gas and water filter, gas exhaust valve outside the stove body, side boiling water valve, straight pipe heat radiator in the inner wall of the stove body and connected to the circular water jacket, outer pipe connected to the heater, fuel leakage preventer in the bottom of the stove body, stove grate locking unit, coke eliminating door and coke pushing rod, air inlet connected to blower, ash door and wind backing baffle. It can produce gas continuously and high flame temperature and less environmental pollution.

A cobalt-based alloy used for sheathed thermocouple cables is disclosed. The cobalt-based alloy comprises following components by mass: 0-0.0042% of C, 22-25% of Cr, 0.3-0.8% of Nb, 0.2-0.5% of Co, 0.1-0.3% of Mo, 0.2-0.8% of Fe, 0.01-0.02% of Mg, 1-1.5% of Si, 0-0.02% of P and 0-0.01% of S, with the balance being Ni. The cobalt-based alloy facilitates processing of sheathed thermocouple cables under a condition of ensuring plasticity, can be used for high-temperature environments, overcomes a plurality of technical defects and use restrictions in practical application, and prolongs the service lifetime of a sheathed thermocouple.

The invention discloses a modified adsorbent for adsorption separation and a preparation method and application thereof, which belong to the technical field of petroleum and chemical engineering. On the basis of an industrial product molecular sieve or a catalyst, through modification optimization, on the premise that the original surface microstructure is not damaged, better specific surface area, adsorption capacity and diffusivity are achieved, and directional selectivity and better mechanical strength are achieved. The modified adsorbent can be widely applied to the fields of aromatic isomers, diamine isomers, phenolic isomers and polyhydric alcohol isomers in a liquid chromatography adsorption separation technology, is further widely applicable to the fields of adsorption dehydration, catalyst carriers, removal of organic matters in wastewater and waste gas and the like, and is particularly applicable to a cordierite honeycomb catalytic module with a higher mechanical strength requirement. The modified adsorbent has important application in the fields of rapid thermal cracking catalytic reforming and the like, and meanwhile, the more stable catalyst or molecular sieve adsorbent is more easily applicable to adsorption of harmful substances such as indoor formaldehyde and the like.

The invention discloses a weighted graph based structure topology optimization method and system, and a readable storage medium. The method comprises the following steps: S1, setting design variablesrequired by a weighted graph model of a target body and upper and lower bounds of part of adjustable design variables; S2, randomly generating a mathematical model of a first-generation individual according to the upper and lower bounds of a design variable, and performing iterative operation by using the differential evolution algorithm based on the mathematical model of the first-generation individual to obtain an optimal mathematical model; wherein the mathematical model is represented by a group of design variables obtained based on random values in a range defined by upper and lower boundaries; and S3, converting the optimal mathematical model into an optimal structure topology configuration corresponding to the target body. According to the method, structural topology optimization isachieved, the gradient of unit attributes does not need to be calculated in the process, meanwhile, no special requirement is needed for the structural load working condition, and the method can be well applied to structural topology optimization under dynamic loads.

The invention discloses a thermostatic strand displacement amplification technology. According to the technology, after heating denaturation is conducted on a target DNA sequence, a pair of primers containing RNA sequences are used for hybridizing with a template DNA single chain, the primers are extended under the action of strand displacement DNA polymerase, a combined sequence of target DNA andRNA containing an identification site of endoribonuclease is generated, the identification site is cut by the hydrolyzation of thermal resistant endoribonuclease to form viscous termini, the primersare connected with the viscous termini, a 3' terminus is extended under the action of the strand displacement DNA polymerase and replaces another DNA strand, a displaced strand is sequentially turnedinto target sources of another amplification reaction after the displaced strand is hybridized with the primers, the steps are constantly repeated in a reaction system, and the target DNA sequence isincreased in exponential rate. The technology is convenience, sensitive, rapid and good in specificity, the detecting lower limit is DNA with a plurality of gene copy numbers, the technical detect ofthermostatic amplification in the prior art is overcome, and the technology can be widely applied to the fields of clinical medicine, medical jurisprudence, animal and plant quarantine inspection andthe like.

The invention relates to a brake pipe nipple for a horizontal well conveying tractor perforating tool. A brake control mechanism is connected by screwing between an upper brake joint and a lower brakejoint. A brake claw of the brake control mechanism is located in the middle of one end of two supporting arms, and is connected and fixed by a steel pin. The other end of the two supporting arms is fixed to a backup block by a steel pin. A spring is arranged between the backup block and a pushing rod. The pushing rod is connected with a motor assembly. In the perforation construction of horizontal wells, the brake pipe nipple forms a horizontal well conveying tractor perforating tool together with a release pipe nipple, a rotating pipe nipple, an upper centralizer, a magnetic positioning pipenipple, a tractor, a lower centralizer, a flexible pipe nipple, a safety power supply pipe nipple, a shock absorber, a perforator and a ball gun tail, and the tool can adapt to work under the perforation condition of an up-warping horizontal well. Reasonable friction resistance can be provided. A well entering tool can be kept stationary or move at uniform speed in an up-warping horizontal well.The motion state of the tractor perforating tool can be controlled. The safety and reliability of construction can be greatly improved.

The invention provides a preparation technology of a novel sandwich insulation board. The preparation technology is characterized in that multilayer gridding cloth and inorganic lightweight aggregate form a sandwich structure, and a main structure is divided into five layers, which is shown as the attached figure. After expanded perlite is subjected to special hydrophobic processing, the expanded perlite is compounded with three layers of different gridding cloth, and the five-layer-structure sandwich insulation board is finally obtained. The preparation technology of the novel sandwich insulation board has the advantages that the technology is simple, the fireproof and insulating effects are good, and the insulation board can be widely applied to energy conservation and insulation of various buildings.

The invention discloses a data management method, a data management device, a server and a computer readable storage medium, and the method comprises the steps: receiving image data uploaded by a lightweight application client; if the image data contains more than one target product, performing identification operation on the image data to obtain an identification result; acquiring a region identification code of a region where the lightweight application client is located; and establishing an association relationship between the identification result and the area identification code, and storing the association relationship into a preset product data table. According to the scheme of the invention, the method overcomes the defects of the flow and technology in a conventional data collection and management technology, improves the sharing efficiency and utilization efficiency of data, and also reduces the management cost of an enterprise.

The invention provides a rigid contact net grinding and polishing device which is used for automatically grinding and polishing a contact line and comprises a frame body, two pairs of guide wheels are arranged on the two sides of the upper end of the frame body, a positioning wheel is arranged below each pair of guide wheels, and clamping parts used for clamping a busbar are formed by the wheel faces of the guide wheels and the wheel faces of the positioning wheels; the lower end of the frame body is provided with at least one polishing wheel, the polishing wheels are parallel to rotating shafts of the guide wheels, the polishing wheels are connected with an output shaft of the motor, the polishing wheels polish contact lines at the lower end of the busbar, and the polishing wheels rotate to drive the frame body to move on the busbar. And compared with an original construction method, the rigid contact net grinding device can achieve automatic grinding, the construction difficulty is greatly reduced, safety is higher, and working efficiency is higher.

The invention provides a positioning apparatus for LED lamp tube glue coating equipment, wherein a plurality of detachable lamp tube snapping rings are arranged above a bracket capable of being fixedin the middle of a glue coating lower working position positioning seat, the rear portions of each lamp tube are respectively provided with a glue discharge hole, three blocking blocks are distributedon the periphery of the lamp tube snapping ring, the lamp tube snapping ring is a circular ring structure, the inner diameter of the rear portion of the snapping ring is 1-3 mm smaller than the innerdiameter of the front portion, and the snapping ring has a micro-horn-shaped inner diameter structure with the large front portion and the small rear portion, such that the inclination cannot be generated during the glue coating after the lamp tube head is snapped, the glue coating can normally operate, the leaking glue can flow into the glue liquid groove arranged below the glue coating device from the glue discharge holes, and the replacement and maintenance can be conveniently performed when the snapping ring is damaged.

The invention discloses a test method for measuring a limit tip cold bending angle and equivalent fracture strain, which comprises the following steps: preparing a bending sample, setting an initial fixed loading stroke, determining existence and absence of a crack state, determining an effective sample, and measuring the limit cold bending angle. The method for measuring the equivalent fracture strain comprises the following steps: spraying speckles on the side surface of a sample, obtaining an effective sample for DIC data processing, calculating the deformation of the edge side of the effective sample, measuring the arc length and calculating the equivalent fracture strain. According to the invention, a technical scheme of combining fixed stroke loading, a DIC technology and theoretical calculation is adopted, and the limit cold bending angle and the equivalent fracture strain are accurately measured. According to the method, the failure moment of the material is accurately controlled, the intrinsic parameters of the material are measured, the test cost is reduced, and the method has important engineering practical significance and wide engineering application prospects.

The invention provides a chitosan/styrene-acrylic emulsion surface sizing agent for papermaking. A formula of the chitosan/styrene-acrylic emulsion surface sizing agent comprises deionized water, chitosan, ammonium persulfate, ferrous sulfate, styrene, butyl acrylate, methyl acrylate, a composite emulsifier, hydrogen peroxide, a defoaming agent and glyoxal. A preparation method comprises the following steps: 1, stirring 28kg of deionized water and ammonium persulfate for standby use; 2, mixing 16kg of deionized water and ferrous sulfate for standby use; 3, stirring the styrene, butyl acrylate,methyl acrylate and the composite emulsifier for standby use; 4, mixing 100kg of deionized water and hydrogen peroxide for standby use; 5, adding the surplus water into chitosan, heating, and addingthe standby use material of step 1; 6, adding the standby use material of step 2, and preserving the heat for 10 minutes; 7, stirring 10 percent of to-be-used mixed monomer of step 3 and 10 percent ofstandby use material of step 4; 8, adding the remaining standby use materials of step 3 and 4; 9, cooling to 60 DEG C, adding the glyoxal, and stirring for 15 minutes; 10, adding the defoaming agent;and 11, filtering to remove impurities, thus obtaining a finished product. By adopting the sizing agent, the film forming performance, adhesion and paper surface strength of the paper product can beimproved, and the environment-friendly production can be facilitated.