22results about How to "Prevent extraction" patented technology

The application discloses high-strength composite cement blanket and belongs to the technical field of civil engineering composite materials. The application improves the three-dimensional fabric structure: a three-dimensional weaving is adopted to form a top layer, a middle layer and a bottom layer, wherein the middle layer is formed by a honeycomb three-dimensional structure formed by interweaving vertical fiber filaments and horizontal oblique fiber filaments which are arranged obliquely relative to the vertical fiber filaments; the vertical fiber filaments connect the top layer and the bottom layer; and the horizontal oblique fiber filaments pass through the vertical fiber filaments in an S-shaped wiring mode multiple times to form limiting knots which are distributed in the top layer, the middle layer and the bottom layer to form an overall tensile strength reinforcing structure. The three-dimensional fabric can be combined with a "two cloth and one film" protective layer and a solidifiable composite material containing gold steel sand. The application realizes isotropic reinforcement through the honeycomb structure and builds a mechanical occlusal interface through the S-shaped limiting structure, thereby significantly improving the bending strength, interface adhesion and waterproof durability of the cement blanket, and the application is suitable for slope protection, trench lining and temporary road paving engineering and the like.

The utility model provides a kind of anti-splashing oil sump, including the oil sump shell body of upper end opening, the lower part of oil sump shell body is provided with baffle, and the gap is left between the bottom of oil sump shell body in the lower side of baffle, the oil guide gap is left between the inner wall of oil sump shell body in the opposite two sides of baffle, and multiple pieces of vertical staggered anti-splashing vertical plate are set up in oil sump shell body upwards, and the bottom edge and side edge of each anti-splashing vertical plate are connected with baffle and oil sump shell body respectively, and the anti-splashing vertical plate of vertical staggered divides into multiple oil storage compartments in oil sump shell body, and the bottom of oil sump shell body is outwardly communicated with oil drain pipe, and the inner wall of oil drain pipe is provided with internal thread, and oil drain pipe is screw-connected with oil drain bolt, and the bolt knob is set up in the oil drain bolt that projects oil drain pipe.

The utility model discloses a neonatal nest assisting in opening an airway, which comprises a guard 1, one end of the guard 1 is connected with a head protection pad 2, the other end of the guard 1 is connected with a shoulder pad 3, and the height of the shoulder pad 3 can be adjusted according to filled materials; a first movable connecting structure connected with the outer side of the other end of the enclosure 1 is arranged on the inner side of the end, away from the enclosure 1, of the headrest 2; a second movable connecting structure connected with the inner side of the other end of the protector 1 is arranged on the outer side of the end, away from the protector 1, of the shoulder pad 3; and the two sides of the guard 1 are respectively connected with a baby wrist sleeve 5. The device has the advantages of assisting in opening the airway of the newborn, preventing the newborn from scratching himself / herself, having sense of safety and the like.

The application belongs to the field of municipal engineering rainwater real-time measurement, and provides a rainfall picture rainfall intensity calculation method based on raindrop extraction-rainfall intensity calculation, comprising: obtaining rainfall video and decomposing it into rainfall images according to frames; constructing a target function of image raindrop extraction, and extracting raindrop images by using an ADMM algorithm; modifying a CNN model and training the same; and predicting rainfall intensity. The application can prevent random noise in the image from being extracted together, so that the extracted raindrop image is more accurate. The image raindrop extraction algorithm proposed in the application has higher calculation efficiency, can efficiently extract raindrops in the image, and can realize real-time calculation of the algorithm. The application can effectively improve the generalization ability of the CNN model, especially in complex scenes such as night with insufficient light. Rainfall events with large rainfall usually occur at night, and the prediction ability in the night scene has very important significance for the prevention and control of urban waterlogging.

The utility model discloses an expandable combination cabinet, including cabinet, baffle and placing plate, the cabinet is fixedly installed with baffle in, the cabinet is connected with placing plate through the limiting structure, the cabinet outside top and bottom respectively install expansion structure and dehumidification structure, dehumidification structure includes dehumidification groove, dehumidification board, magnetic attraction frame and metal baffle, the inlaying of magnetic attraction frame has in the dehumidification groove front side wall, the dehumidification groove front side has the metal baffle through the adsorption of magnetic attraction frame, expansion structure includes expansion groove, first threaded hole, expansion board, fixed groove and fixed screw rod. That expandable combination cabinet, through dehumidification structure, it is convenient to carry out the damp of cabinet, avoid moisture to immerse in the cabinet, influence cabinet service life, through expansion structure, it is convenient to expand the use area of operation platform, improve the flexibility and convenience of cabinet, through the limiting structure, it is convenient to dismouting placing plate to improve the utilization of cabinet.

The invention discloses an engineering strain for producing urolithin A and application of the engineering strain. The engineering strain contains a tannin acyl hydrolase gene tah, an esterase gene lip, a gallic acid decarboxylase gene gdo and a dopamine dehydroxylase gene ascd. The four artificially synthesized genes are jointly constructed on an escherichia coli expression vector, so that a brand-new vector containing four co-expression genes is constructed, then the brand-new vector is transferred into a chassis strain cell to realize co-expression of the four genes, and four enzymes expressed in the cell all have activity; and the obtained heavy engineering strain can stably convert the extracellular added ellagic tannin into the urolithin A, so that the whole-cell catalysis process of producing the urolithin A by taking the ellagic tannin as a substrate is realized.

The utility model discloses a robot conveying track cleaning device, which relates to the technical field of track cleaning, and comprises a high-pressure spray gun body, the tail end of the high-pressure spray gun body is connected with an air interface, the end part of the air interface is in threaded connection with an air pipe, and the tail end of the high-pressure spray gun body is connected with a liquid interface. And the outer side of the liquid connector is movably sleeved with a water pipe, and the tail end of the high-pressure spray gun body is fixedly connected with a supporting block. The clamping plate and the threaded rod are arranged, in the using process, through mutual matching of the threaded rod and the clamping plate, a water pipe arranged on the outer side of the liquid connector in a sleeving mode can be reinforced, so that the water pipe is effectively prevented from being pulled out of the outer wall of the liquid connector easily due to pulling force, and the fixing block and the rotating plate are arranged, so that in the using process, the water pipe is not prone to being pulled out. And through mutual matching of the two groups of fixing blocks and rotating plates, the openings of the air interface and the liquid interface can be sealed when the air pipe and the water pipe are pulled out.

The invention discloses a liquid ammonia and aviation kerosene dual-fuel hybrid turbofan engine combined with a fuel cell for power generation, which belongs to the technical field of aero-engines and comprises a traditional turbofan core machine, a liquid ammonia fuel subsystem, an aviation kerosene fuel subsystem and a fuel cell power supply subsystem, and the liquid ammonia fuel subsystem, the aviation kerosene fuel subsystem and the fuel cell power supply subsystem are integrated. Liquid ammonia is conveyed to the liquid ammonia preheater through the fuel pump, absorbs heat of air from an outlet of the low-pressure compressor and is vaporized, and cooling of air at an inlet of the high-pressure compressor is achieved; vaporized ammonia gas enters an ammonia gas decomposition hydrogen production device which annularly sleeves the outer wall of the exhaust nozzle, and is catalytically decomposed into hydrogen gas by utilizing waste heat of the exhaust nozzle; high-temperature mixed gas generated by decomposition enters an aviation fuel preheater for preheating aviation fuel and then is conveyed to an anode of the proton exchange membrane fuel cell; and meanwhile, part of the air cooled by the liquid ammonia preheater is conveyed to the cathode of the fuel cell through a pressure reducing valve. The thrust loss caused by extracting power from the main shaft of the engine is avoided, and the energy comprehensive utilization efficiency of the whole engine is remarkably improved.

This utility model discloses a direct-drive motor five-axis CNC rotary table, relating to the field of five-axis CNC rotary table technology. It includes a CNC assembly comprising an A-axis rotary mechanism, a B-axis rotary mechanism at the output end of the A-axis rotary mechanism, and a rotary table assembly at the output end of the B-axis rotary mechanism. Both the A-axis and B-axis rotary mechanisms are driven by a direct-drive motor. A fixing component is located on the top of the rotary table assembly, including a fixed platform. A positioning groove is formed on the top of the fixed platform. The fixing component includes a fixing plate, and a positioning block is provided at the bottom of the fixing plate. The positioning block engages with the positioning groove. A fixing groove is formed on the top of the fixing plate, and screw holes are formed at both ends of the fixing groove. Fixing screws are threaded into the screw holes. This utility model allows for convenient replacement of the fixing component, enabling stable fixing of materials with special shapes, and has high practical value.

An aerosol-generating device is disclosed. An aerosol-generating device includes a body and a cartridge coupled to the body. The cartridge includes: a cartridge body containing an aerosol-generating substance; an absorbing member accommodated in the cartridge body, at least partially exposed to an exterior of the cartridge body, and configured to absorb an aerosol-generating substance; and a lock portion protruding in an inward direction of the cartridge main body and inserted into the absorbing member to be coupled to the absorbing member.

The invention relates to the field of polyvinyl chloride materials, and particularly discloses a high-performance polyvinyl chloride material and a preparation method thereof. The high-performance polyvinyl chloride material comprises the following raw materials in percentage by mass: 50-60% of polyvinyl chloride resin powder, 2-4% of an efficient heat stabilizer, 25-35% of an environment-friendly plasticizer, 4-7% of a filler, 1-3% of a lubricant and 1-2% of a toner, the preparation method of the efficient heat stabilizer comprises the following steps: adding bentonite and hexadecyl trimethyl ammonium chloride into water, and carrying out reflux stirring, washing, drying and sieving to obtain organic modified bentonite; the method comprises the following steps: uniformly mixing NaOH and Na2CO3 to obtain a mixed solution; al (NO3) 39H2O and NH4F are added into water, the acidified CNTs and the organic modified bentonite are added, the mixed solution is added, the pH value reaches 9-10, hydrothermal reaction, cooling, centrifugation, washing and drying are performed, and the efficient heat stabilizer is obtained. The polyvinyl chloride material provided by the invention has the characteristics of excellent thermal stability and environmental protection performance.

The embodiment of the application discloses a kind of robust methods for estimating the speed of moving sound source based on line spectrum Doppler frequency shift, method includes: initialization calculation parameter, the calculation parameter includes window function length, Fourier transform length and overlap length;According to the calculation parameter, short-time Fourier transform is carried out to obtain the STFT time-frequency spectrogram of received signal;According to the STFT time-frequency spectrogram, the Doppler relevant parameter of non-iteration is calculated, the Doppler relevant parameter includes line spectrum frequency, speed, positive lateral time and positive lateral distance;According to STFT time-frequency spectrogram, calculate time-frequency energy concentration;According to Doppler CT time-frequency analysis algorithm, the Doppler relevant parameter is iteratively processed;When reaching the iteration stop requirement, the final Doppler relevant parameter is output.The robustness of Doppler relevant parameter estimation process such as moving sound source speed, positive lateral distance in low signal-to-noise ratio environment is significantly improved.

This invention presents an image retrieval method based on the fusion of attention enhancement and autoencoding. It uses an improved ResNet50 network to extract global and local feature maps, obtains global and local feature descriptors based on these maps, calculates image similarity, and derives the target image through similarity comparison. This image retrieval method improves upon traditional residual blocks by employing automaton encoding, effectively unifying local and global features into a single network. It uses an attention mechanism to extract regions of greater interest, avoiding algorithmic overhead and resulting in faster retrieval speed and higher accuracy.

The application provides a kind of intelligentized Undaria pinnatifida slicing machine, including horizontal bottom plate, guide fixed frame structure, upper installation frame, convenient maintenance protection observation frame structure, driving roller, driven roller, conveying motor, conveying belt, buffer slicing frame structure, lead-out frame, storage insertion frame, storage insertion hopper, adjustable pad frame structure, console and controller, the guide fixed frame structure is installed on the upper portion of horizontal bottom plate;The upper installation frame is installed on the outside upper portion of guide fixed frame structure;The convenient maintenance protection observation frame structure is installed on the front side of upper installation frame;The driving roller is connected to the right lower side of upper installation frame;The driven roller is connected to the left upper side of upper installation frame.The storage insertion frame is inserted in the right side of the inside of support base, which is conducive to storing the storage insertion hopper during use, thereby saving space occupation when not in use.

The invention discloses an Agent-based video retrieval method, which comprises two major steps of video storage and retrieval: during video storage, an original video is subjected to time sequence segmentation to obtain video clips, a comprehensive description containing a picture description and an audio description is generated through a video description module, and then the overall description of the original video is obtained through summarization of a large language model; respectively storing the two types of descriptions into a database and generating a vector index; during retrieval, the Query processing Agent analyzes user query to clarify a retrieval intention, and the database retrieval Agent optimizes the query and obtains a retrieval result based on the vector index. In the video description module, a cue word Agent generates a targeted cue word according to picture description, an audio understanding large model is guided to extract audio information associated with a picture, and tight combination of the audio information and the picture information is achieved. The problems that in the prior art, sound and picture information association is insufficient, and user intentions are difficult to distinguish are solved, the accuracy of video retrieval is effectively improved, interaction obstacles between the user and the system are reduced, and the user experience is improved.

This disclosure relates to a garment processing device, including a pump body and a cylinder. The pump body is connected to the cylinder, and the cylinder is provided with a water outlet and a drain outlet. The drain outlet is located at the bottom of the cylinder, and the water outlet is positioned higher than the drain outlet. The pump body is connected to the water outlet. This garment processing device has a high degree of compactness and can prevent the pump body from sucking in dirt.

The embodiment of the application provides a kind of bridge BIM model to bridge FEM model conversion method, it is related to bridge design technical field, method includes: from bridge BIM model, export IFC data to extract the cross-sectional characteristics of bridge component, and then determine cross-sectional geometric parameters;Again, the cross-sectional geometric parameters of mutually different cross-sections are stored as component information files, and the geometric parameters of mutually different cross-sections are stored as cross-sectional information files;Based on component information file, connection relationship file for storing the connection relationship of adjacent bridge components is constructed, boundary condition file for storing the boundary information of bridge as a whole and node information file for storing the centroid point coordinates of bridge component, finally, these JSON file formats are converted into the format file of bridge FEM model.The application is used to solve the problem that BIM model and FEM model need to be modeled separately in the process of bridge design, the model cannot be reused, resulting in low efficiency of bridge design.

The utility model provides a natural gas heating furnace burner cooling protection device, which relates to the technical field of heating furnace burners, and comprises a burner main body, pipelines are respectively arranged on two sides of a cooling pipe in a vertically staggered manner, the cooling pipe and the pipelines on two sides are communicated to form a cooling cavity, a water inlet component is mounted in the pipeline, and a water outlet component is mounted in the water inlet component. A water inlet assembly is installed in the upper pipeline, a water pumping assembly is installed in the lower pipeline, cooling covers extending into the cooling cavity are installed at the output end of the water inlet assembly and the input end of the water pumping assembly correspondingly, and the upper cooling cover and the lower cooling cover are arranged close to the burner body. The water body is pumped away through the lower cooling cover; by optimizing the heat exchange structure, utilizing the cooling chamber formed by the cooling pipe and the upper and lower pipelines communicated with the cooling pipe, and matching with the water inlet assembly and the water pumping assembly, the circulating flow of water is realized, the heat at the burner is effectively taken away, the local overheating phenomenon is avoided, and the cooling effect is greatly improved.

The utility model discloses a concentrator wall -hanging type mounting structure, including concentrator body still include mount, be provided with a plurality of mounting hole on the mount, be provided with the embedding slot on the mount, the inside fixedly connected with the bubble level of embedding slot, the front of mount is provided with the mounting groove, and the inside detachably installed with the mounting plate of mounting groove, and the side end fixedly connected with the connecting plate of mounting plate, the top and bottom of concentrator body all fixedly connected with the fixed plate, and the fixed plate is connected with the connecting plate through the adjusting mechanism, is convenient for the expansion screw hole position of marking on the wall body fast, can guarantee two marks of horizontal simultaneously on the same horizontal line, avoids the concentrator of installation and inclines the situation.

The invention discloses a groove supporting plate capable of being permanently reserved and a preparation method and construction method of the supporting plate. The supporting plate comprises a supporting plate body made of a fiber-reinforced Portland cement-based composite material, and an inverted sharp corner is arranged at the bottom of the supporting plate body and used for being vertically inserted into the bottom of a groove along the side wall of the groove; a plurality of drainage holes are uniformly formed in the supporting plate body, all the drainage holes are through holes, the hole diameter is 20-30 mm, the aperture ratio is 10-15%, the 28-day breaking strength of the supporting plate body is larger than or equal to 18 MPa, the 24-hour water absorption rate is smaller than or equal to 10%, through the synergistic combination of the hole diameter and the aperture ratio, temporary supporting-permanent reinforcement-controllable inverted filtration is achieved, dismounting is not needed, and the using effect is good.

The utility model discloses a coconut meat dietary fiber volatile substance separating device which is characterized in that the top wall of a heating box is sunken to form a food groove and is fixedly provided with a pipe cover groove, and a pipe cover is inserted into the pipe cover groove. A bottom sealing cover is detachably installed on the top wall of the heating box in a sealed mode. The side wall of the bottom sealing cover is hermetically connected with a vent pipe and an air pressure sensor; and a vent valve is arranged in the vent pipe. An installation column is fixedly arranged on the inner top wall of the bottom sealing cover, a cylindrical groove is formed in the column, the top of the groove penetrates out of the top wall of the bottom sealing cover to form an inserting opening, and a through hole is formed in the bottom of the groove. And a plurality of air seal rings and a vertically penetrating sampling pipe are arranged in the cylindrical groove. A top sealing cover is detachably installed on the outer top wall of the bottom sealing cover in a sealed mode. A ventilation mechanism is further arranged on the top wall of the bottom sealing cover and used for communicating or sealing the interiors of the top sealing cover and the bottom sealing cover. A heating mechanism is arranged in the heating box and is externally connected with a controller. The device can be matched with a sampling tube of a gas chromatograph for use, and relatively pure volatile substances are separated from the dietary fiber mixed food for analysis of the gas chromatograph.

The invention discloses a conference summary generation system, method, device and equipment. According to the system, conference voice data streams are collected through intelligent glasses, and the voice data streams are sent to a server side through a client side; the server converts the voice data stream into a text stream and sends the text stream back to the client, and the client displays the text stream; meanwhile, the intelligent glasses receive a user shooting instruction, collect image data of the conference segment and send the image data to the client; and the client displays the image data at a corresponding text stream position, obtains a target conference summary entry corresponding to the image shooting time after receiving a conference summary which is provided by the server and is generated based on a voice transcription text, takes the image data as the image data corresponding to the target conference summary entry, inserts the image data into the conference summary, and sends the image data to the server. And the conference summary is displayed. By adopting the processing mode, not only is the lightness of the voice conference summary considered, but also the problem that the voice conference summary is difficult to understand in the later period due to the absence of photos is solved.