13results about How to "Effective structure" patented technology

This disclosure provides a composite dielectric structure, a device having the same, and a fabrication method thereof. The fabrication method includes operations S1-S4. Operation S1: Depositing source and drain ohmic metals at designated locations on the surface of an epitaxial wafer; Operation S2: Using photoresist and electron beam lithography to create the required window for the gate structure; Operation S3: Etching a portion of the epitaxial wafer surface structure corresponding to the window and removing the photoresist to fabricate a gate trench; Operation S4: Growing AlN / SiN within the gate trench. X Composite dielectrics enable the fabrication of devices with composite dielectric structures.

The utility model discloses an efficient concrete mixing blade structure, which relates to the technical field of concrete mixing and comprises a transmission shaft and a mixing blade component, a positioning sleeve is mounted on the transmission shaft, the mixing blade component is mounted on the positioning sleeve, and wear-resistant protective frames are mounted on the front side and the rear side of the mixing blade component. Arc-shaped wear-resistant blocks are mounted on the sides, away from the transmission shaft, of the stirring blade assemblies; a limiting ring is installed below the transmission shaft, threaded rods are installed on the left side and the right side of the lower portion of the limiting ring, the lower portion of the transmission shaft is sleeved with a movable sleeve, and a bottom stirring assembly is installed on the movable sleeve. According to the efficient concrete mixing blade structure, through the design of the wear-resistant protection frame, the arc-shaped wear-resistant blocks and the wear-resistant pieces, the mixing blade assembly is protected in all directions, wear of concrete to the mixing blade assembly is effectively reduced, the service life of the mixing blade assembly is prolonged, the replacement frequency is reduced, and the cost is saved.

The invention belongs to the technical field of medical dressings, and relates to a DNA hydrogel dressing with a skin-like structure and function as well as a preparation method and application of the DNA hydrogel dressing. The dressing is structurally characterized in that a skin-like three-layer structure, namely an epidermal layer, a corium layer and a subcutaneous tissue layer, is constructed by regulating and controlling the cross-linking degree of chain segments and combining a directional freezing technology, and an extracellular matrix microenvironment is provided for physiological activities of cells. In function, an aptamer sequence with a specific function is introduced, and stem cells are induced to directionally differentiate into cells required by tissue repair; the subcutaneous tissue-like layer is loaded with resveratrol, and fascia is activated to induce regeneration of skin appendages; in view of the fact that chronic ulcerative wounds are easily attacked by bacteria, the antibacterial peptide and a functional DNA sequence of targeted bacteria form an antibacterial peptide-DNA composite chain segment through a click reaction, and the dressing is endowed with targeted antibacterial performance. The prepared dressing has a skin-imitating three-dimensional structure and performance, can guide skin appendages such as regeneration of hair follicles and sweat glands, and can be widely applied to repair treatment of chronic wounds.

The utility model relates to the field of lining reshaping equipment, and discloses a reshaping device for composite lining machining, which comprises a machining table, two limiting tables are fixedly connected to the upper side of the machining table, clamping grooves are respectively formed in the two limiting tables, a clamping block is respectively connected to the inner side of each clamping groove in a sliding mode, and two hollow grooves are respectively formed in the lower side of the machining table. According to the bushing positioning and fixing device, the clamping plates on the two sides can be driven by one hydraulic cylinder to position and fix a bushing, meanwhile, after the bushing is positioned and fixed, the hydraulic cylinder continues to descend, and the bushing is clamped in the clamping grooves, so that the bushing is positioned and fixed. Compared with the mode that the lining is positioned through air cylinders on the two sides, the lining shaping device has the advantages of being simple in structure, efficient, firm, durable and high in reliability.

The invention discloses a synthesis method and application of an asymmetric ether compound, and belongs to the technical field of organic synthesis. According to the method disclosed by the invention, stoichiometric silver trifluoromethanesulfonate is taken as a catalyst, benzyl halides with different structures directly react with benzyl alcohol under the conditions of air atmosphere, room temperature and no need of keeping out of light, and the asymmetric ether bond is efficiently constructed. Aromatic groups in the benzyl halide and the benzyl alcohol are independently selected from aryl or five-membered to six-membered heteroaryl containing nitrogen, oxygen and sulfur heteroatoms. The method provided by the invention is mild in condition, safe and simple to operate, wide in substrate applicability, simple in post-treatment and easy for industrial amplification, and the prepared asymmetric ether compound has very high application value in preparation of drugs and pesticides.

The application relates to the technical field of intelligent path planning in a virtual reality environment, and discloses a warehouse path planning method based on virtual reality. A unified coordinate system is established on the ground of the warehouse, the picking points are uniquely numbered and positioned, and the data consistency and traceability are ensured; the path generation adopts the nearest neighbor principle and combines node order and numbering rules to obtain a preliminary reasonable route; the iterative local node exchange and corner sum evaluation are used to optimize the path smoothness and continuity; the path overlap is avoided through the cross detection and backtracking mechanism, and the executability and safety are improved; the buffer point is introduced for high corners, and the projection correction is carried out when the boundary is exceeded, so that the artificial or robot following is facilitated, and the picking efficiency is improved; finally, the path visualization and interactivity in the virtual reality are realized through coordinate mapping, and the problems of space modeling confusion, unreasonable path, cross confusion and unfriendly high corner in the traditional path planning are solved.

The invention discloses a classroom facial expression recognition method based on an improved RT-DETR model. The method comprises the following steps: 1, obtaining a data set of classroom facial expression images; 2, preprocessing the data set by using a computer; 3, training a data set by using a classroom facial expression recognition detection model based on an improved RT-DETR model; 4, training the classroom facial expression recognition detection model to obtain an optimal detection model; and 5, performing real-time identification detection on the classroom facial expressions of the students in combination with monitoring and an optimal detection model. According to the invention, the CAFI module is designed in the backbone network, so that the classroom facial expression features can be extracted and screened more accurately; an MCFEEConv convolution feature enhancement module is designed in the head network, and the feature expression ability of faces with different distances and different sizes is improved; a RepC3LWGA module is designed in a head network, and joint modeling of local convolution features and global context features is achieved.

The invention discloses an auditory space attention decoding method based on a low-density electroencephalogram cross-hemisphere attention mechanism, electronic equipment and a medium, and belongs to the field of brain-computer interface and neural signal processing. The method comprises the following steps: preprocessing low-density electroencephalogram signals, and respectively mapping the low-density electroencephalogram signals into three-dimensional tensors with a time dimension and a two-dimensional space dimension according to a left hemisphere and a right hemisphere; a space-channel attention module is utilized to extract key spatio-temporal characteristics of each hemisphere; dynamic interaction between left and right hemisphere features is modeled through a cross-hemisphere attention module, and information fusion is realized; and finally, classifying the fused features, and outputting auditory attention directions. According to the method, an electroencephalogram space-time structure is reserved through three-dimensional tensor mapping, feature discrimination is enhanced in combination with a double attention mechanism, high-precision decoding can still be achieved under the low-density condition that only 4-8 channels are used, meanwhile, the method has the advantages of being low in calculation complexity and high in physiological interpretability, and the method is suitable for wearable brain-computer interfaces and intelligent hearing-aid equipment.

The application discloses a text entity recognition and data structuring processing method and system, and belongs to the technical field of data processing, which specifically comprises the following steps: obtaining medical diagnosis text data to be processed and generating a query script; extracting sample data through the script and inputting the sample data into a two-stage entity recognition model for entity recognition and index item extraction to obtain a preliminary index item set, and determining whether the preliminary index item set meets preset structuring requirements; if the preliminary index item set meets the preset structuring requirements, the data is converted into a structured entity; determining a data category according to the structured entity, polling a background case database to generate a structured index result set; extracting samples from the structured index result set for medical personnel verification, and correcting index items of the structured entity according to a verification result, so that the accuracy and integrity of the structured entity are ensured.

This invention discloses a cooling tower, including a water collection tray at the bottom of the cooling tower and a sludge removal component disposed within the water collection tray. The sludge removal component is used to clean sludge and debris from the water collection tray. The sludge removal component includes: an active rotating component rotatably disposed within the water collection tray; and a flexible stirring component located within the water collection tray, with a first end of the flexible stirring component driven by the active rotating component and a second end connected to the inner wall of the water collection tray. The active rotating component drives the flexible stirring component to move by rotating. The cooling tower of this invention effectively solves the problem of sludge and debris easily accumulating in existing cooling towers.

A container residual liquid discharging device comprises a transition conveying track and a support arranged on one side of the transition conveying track, the support is provided with a container clamping mechanism, a first rotating mechanism and a second rotating mechanism for driving the container clamping mechanism to rotate, a lifting mechanism for driving the container clamping mechanism to lift, and a telescopic suction pipe, the rotating axis of the first rotating mechanism is arranged vertically, the rotating axis of the second rotating mechanism is arranged parallel to the transition conveying track, and the suction pipe is arranged obliquely. A discharging method, a container is transferred to the transition conveying track; the lifting mechanism drives the container clamping mechanism to descend, the container clamping mechanism clamps the container, then the lifting mechanism drives the container clamping mechanism to ascend, so that the container is separated from the transition conveying track; the first rotating mechanism and the second rotating mechanism respectively drive the container clamping mechanism to rotate by a set angle, so that the residual liquid in the container is collected at the lowest part of the container; and the suction pipe is inserted into the lowest part of the container to suck out the residual liquid.

The utility model discloses a kind of unpacking systems, including partition, the unpacking area of being arranged in the partition one side and the processing area being arranged in the partition other side, unpacking area is equipped with conveying track, bag cutting device and box bag separation station, bag cutting device is arranged between partition and conveying track, partition and the box bag separation station corresponding place are equipped with the feed inlet for with the notch of outer package bag butt joint, first inclined guide part for guiding the laminar flow of processing area to flow to feed inlet and second inclined guide part for guiding the laminar flow of feed inlet place backflow to processing area are equipped on partition.When nest box is pushed out from the notch of outer package bag, it can directly enter feed inlet, then enter processing area, thereby greatly shorten the time of nest box exposure, reduce pollution risk, first inclined guide part, second inclined guide part can improve the cleanliness of the area where feed inlet is located, further reduce the pollution risk of nest box, while it is beneficial to make the laminar flow of entire processing area layer flow type keep stable, controllable.

The invention discloses a star finder with an efficient heat dissipation and electromagnetic shielding structure, and relates to the technical field of star finders. A built-in electrical element and an integrated assembly are arranged in the star finder body, a shielding laminated layer with an electromagnetic shielding effect is further arranged on the inner wall of the star finder body, broadband electromagnetic interference suppression is achieved through a double-layer composite structure of the shielding laminated layer and a cross-core filtering assembly, and it is ensured that a control circuit works stably; by means of magnetic attraction linkage of the electromagnetic propelling assembly, the permanent magnet plate and the blocking plate, airflow is started according to needs, and control is stable and reliable; the controller generates an alternating magnetic field according to a set time sequence to drive the permanent magnet plate to reciprocate to form forced convection, and energy-saving heat dissipation is achieved. The Kalman filtering controller and the sensor array collect temperature, pressure and flow data in real time, precise closed-loop thrust control is achieved through recursion estimation, and therefore cooperative operation of waste heat driving, intelligent heat dissipation and precise posture adjustment is completed on the premise that electromagnetic compatibility is guaranteed.