11results about How to "Return to normal structure" patented technology

The invention provides a curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound as well as a preparation method and application thereof, and belongs to the field of medicines. The curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound is a compound prepared by taking curcumin, antibacterial peptide and tetrahedral framework nucleic acid as raw materials. Cell experiments show that the curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound can significantly improve the osteogenesis activity of periodontal ligament stem cells, recover the mineralization activity, reduce the oxidative stress level and inhibit the occurrence and development of inflammatory reactions. Animal experiments show that the curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound can significantly reduce loss of alveolar bones of periodontitis rats, inhibit the inflammatory state, promote osteogenic activity, recover the structure and quality of the alveolar bones and effectively treat periodontitis. The curcumin-antibacterial peptide-tetrahedral framework nucleic acid compound provided by the invention has a wide application prospect in preparation of drugs for preventing and / or treating periodontitis.

The present application belongs to the field of catalyst regeneration technology, and discloses a regeneration method of a supported bimetallic alloy catalyst in alkane dehydrogenation. After the supported bimetallic alloy catalyst is calcined by oxygen, the auxiliary metal oxide is physically blended with the supported bimetallic alloy catalyst, and then the reduction treatment is carried out under high temperature using hydrogen atmosphere, so as to restore the activity of the supported bimetallic alloy catalyst. The present application can solve the problems of metal loss and bimetallic alloy structure damage of the bimetallic catalyst in the long-time high-temperature reaction environment and the regeneration process. By adding the oxide of the auxiliary metal, the auxiliary metal atoms are reduced and diffused onto the metal alloy under high-temperature conditions, so as to restore the structure and activity of the bimetallic alloy in the catalyst. The method is simple and convenient to operate, and is suitable for the supported bimetallic alloy prepared by different methods.

This invention relates to a robust image semantic perception adaptive masking transmission method for vehicle-to-everything (V2X) networks, comprising: Step 1: The transmitting end performs semantic analysis on the original input image, extracts high-precision semantic features, and identifies the regions of interest (ROI) and non-ROI regions of interest (NROI); Step 2: A Boolean mask is dynamically generated based on the semantic segmentation result and SNR; Step 3: The ROI features are directly masked based on the Boolean mask; Subsequently, the processed feature map is fed into a semantic encoder to extract multi-scale semantic features; Step 4: Power normalization is performed, dynamic feature encoding is performed, and then the encoded signal is transmitted through a typical analog wireless channel, and noise is superimposed before reception and recovery; Step 5: The receiving end receives the noisy feature signal, performs channel fading compensation and preliminary denoising, and sends the decoded features into a semantic decoder; Through progressive upsampling and multi-level semantic reconstruction, multi-scale features are fused, and finally, a high-quality reconstructed image is recovered and output.

The invention relates to the technical field of medical prostheses, and particularly discloses a talus prosthesis facilitating ankle joint ligament reconstruction and neck body fixing and healing. According to the technical scheme, a three-point fixing mode of a fixing bolt and two locking screws is adopted for connection of the talus prosthesis and the section of the talus neck of the talus prosthesis, the layout, angle and size of the fixing bolt and the locking screws are accurately controlled, mechanical distribution is optimized, the stress concentration phenomenon is reduced, a trabecula structure is further arranged on the talus prosthesis, and therefore the mechanical distribution is optimized. The stability at the initial stage of the operation is ensured, and conditions are provided for bone tissue ingrowth, so that short-term and long-term biological fixation is realized, and the postoperative recovery of a patient as soon as possible is facilitated. Besides, by reserving a tendon reconstruction channel, a tendon suture hole and a ligament suture hole, ligament reconstruction and fixation can be conveniently carried out in an operation, so that the normal biomechanical structure and function of the ankle joint are recovered, the stability of the ankle joint is enhanced, and the living quality of a patient is improved.

The invention belongs to the technical field of image processing, and relates to a brain MRI image super-resolution reconstruction method based on second-order propagation and grid connection, and the method comprises the steps: decomposing a brain MRI image into a plurality of low-resolution slices, and extracting the features of the low-resolution slices to obtain a shallow feature map; fusing the shallow-layer feature map with related features of two adjacent continuous low-resolution slices to obtain fused features, aggregating the fused features to obtain representative features, and carrying out channel segmentation on the representative features to obtain spatial features and related features; the related features are propagated among the slices, and the spatial features and the related features of two adjacent continuous representative features are iteratively fused for four times in total to obtain a feature map; according to the method, the feature map is subjected to up-sampling processing, low-resolution slices are subjected to bicubic up-sampling and then added to obtain a high-resolution image, the continuity of an anatomical structure of brain tissue is reflected by using related information between MRI image sequences, and edge textures and structures in slice images can be recovered.

The present invention belongs to the technical field of shear walls, and specifically discloses an assembled shock-absorbing structure and a shear wall with recoverable function provided with the shock-absorbing structure; the shock-absorbing structure comprises an upper wall variable friction component and a lower wall variable friction component, the upper wall variable friction component and the lower wall variable friction component are respectively provided with an upper wall corrugated plate and a lower wall corrugated plate, and the wave surfaces of the upper wall corrugated plate and the lower wall corrugated plate fit together; the upper wall and the lower wall of the shear wall are respectively detachably connected to the upper wall variable friction component and the lower wall variable friction component, and the upper wall and the lower wall are penetrated by prestressed tendons; during an earthquake, the friction between the wave surfaces of the shock-absorbing structure dissipates the seismic energy to realize the shock-absorbing function; after the earthquake, the shear wall is restored to its position by the self-resetting function of the prestressed tendons, and the shear wall structure and function are restored by replacing the shock-absorbing structure or replacing some components of the shock-absorbing structure.

The invention discloses modified graphite, a high-flame-retardant MC nylon material, a lightweight wearing plate and an air spring. The modified graphite material is modified by sequentially oxidizing and reducing a powdery graphite material to form reduced graphite oxide and then introducing an amino flame-retardant group and a phosphate flame-retardant group onto the reduced graphite oxide. The high-flame-retardant MC nylon material comprises caprolactam, a catalyst, an activating agent and a modified graphite material. The light-weight wearing plate comprises a wear-resisting plate which is integrally formed by adopting a high-flame-retardant MC nylon material, and the wear-resisting plate is provided with a T-shaped metal insert, an exhaust groove and a circular ring backstop. The air spring comprises a high-strength high-flame-retardant lightweight wearing plate mounted above an auxiliary spring, a high-strength lightweight composite material upper cover plate mounted at one end of an air bag, and a PAI-Si high-wear-resistant lubricating coating sprayed on a metal plate and / or the wearing plate. The dry friction coefficient of the composite upper cover plate and the high-strength and high-flame-retardant lightweight wearing plate in an oil-free and maintenance-free state meets the requirement of being smaller than 0.1.

The embodiment of the utility model provides a kind of semiconductor factory circulating cooling water system, it is related to semiconductor manufacturing field.The utility model provides the semiconductor factory circulating cooling water system including cooling tower, mixed reaction pool, filter device and backwash device;Cooling tower is connected with terminal equipment, mixed reaction pool, and mixed reaction pool is used to carry out precipitation to calcium magnesium ion in cooling water;Cooling water in mixed reaction pool is transmitted to filter device bottom, and reflux pipeline is provided in filter device top, and filter device is backflowed to cooling tower by reflux pipeline after filtering cooling water, and cooling tower provides filtered cooling water to terminal equipment;Backwash device is set in filter device top, and the other end of backwash device is connected with liquid transmission pipe, and backwash device is washed to filter device by cooling water provided by liquid transmission pipe.The utility model provides the semiconductor factory circulating cooling water system in effective removal calcium magnesium ion in cooling water, and filtering effect is good.

This invention belongs to the field of biomedicine and natural product application technology, specifically involving the application of 5,4′-dihydroxy-3,6,7-trimethoxyflavonoids in the preparation of drugs for treating inflammatory bowel disease. A mouse colitis model was established by inducing the mice with 3% dextran sulfate sodium. A systematic evaluation of the general physical signs, liver and colon histopathological characteristics of the mice was conducted. The results showed that the compound could significantly improve colitis symptoms and reduce tissue damage. The optimal concentration of 5,4′-dihydroxy-3,6,7-trimethoxyflavonoids was 40 mg / kg. This invention provides a new theoretical basis and application prospect for the development of 5,4′-dihydroxy-3,6,7-trimethoxyflavonoids in the prevention and treatment of inflammatory bowel disease.

The invention discloses a cotton piece filling structure, and belongs to the field of cigarette production equipment, the cotton piece filling structure comprises a mounting rack, an incoming material drum wheel and a feeding drum wheel, the incoming material drum wheel and the feeding drum wheel are both mounted on the mounting rack, and the incoming material drum wheel is arranged above the feeding drum wheel; a shaping wheel disc is arranged below the feeding drum wheel and comprises a shaping cover and a positioning seat; the shaping cover is mounted on the mounting frame through a connecting rod, the shaping cover is located over the positioning seat, a rotating shaft is arranged below the positioning seat, and the shaping cover adjusts the appearance of the cotton piece by adjusting the temperature and the rotating speed of the cotton piece. The fibers are promoted to generate recovery stress through alternate cooling and heating treatment, and ordered and stretched external force guide is provided for the fibers in combination with specific mechanical movement of non-uniform rolling, so that the fluffy structure and the regular form of the fibers are actively recovered.

This invention belongs to the field of deep learning and image processing technology, and discloses a learnable tensor low-rank enhancement method for near-infrared images under low illumination. Based on the estimation results of the local brightness mean and noise variance of the input image, the image is non-uniformly adaptively divided, and a three-dimensional local feature tensor containing spatial height, width, and brightness channels is constructed on each image block using a lightweight convolutional feature extraction network. Subsequently, based on the brightness energy of the image block, the tensor decomposition rank of each block is adaptively determined; factor generation networks and kernel tensor prediction networks are used to generate directional factor matrices and kernel tensors, respectively; threshold suppression is applied to the singular values ​​of the kernel tensor to remove noise subspaces, and scaling of high-frequency directional factors is combined to enhance texture details, effectively restoring degraded edge structures under low illumination conditions. Finally, a weighted fusion method based on minimizing the brightness difference in overlapping regions is used to reconstruct the entire image from the restored image blocks.