3results about How to "Fully aggregated" patented technology

The invention discloses a small-diameter tube welding defect detection method based on space guide feature selection. A used model comprises a backbone network, a pixel decoder and a query decoder. A multi-scale feature map is extracted from an input image through a backbone network, the multi-scale feature map is fused from top to bottom and from bottom to top in a pixel decoder, and a large-scale pixel decoding feature map, a secondary large-scale pixel decoding feature map, a secondary small-scale pixel decoding feature map and a small-scale pixel decoding feature map are obtained; the object query vector interacts with the small-scale pixel decoding feature map, the secondary small-scale pixel decoding feature map and the secondary large-scale pixel decoding feature map in sequence in a query decoder to obtain a prototype query vector; and interacting the prototype query vector with the foreground-enhanced large-scale pixel decoding feature map to obtain a welding defect detection result. Aiming at the characteristics of non-uniform gray distribution, smooth edge and the like of an X-ray small-diameter tube welding image, the backbone network extracts features from multiple angles, and the detection precision is improved.

This invention provides a dielectric ion exchange membrane, its preparation method, and its application, relating to the field of membrane material preparation technology. The dielectric ion exchange membrane includes a substrate and an ion exchange membrane coated on the surface of the substrate. The ion exchange membrane comprises polyvinyl alcohol, an ion system, a UV-curable monomer, and a photoinitiator. By using UV curing technology, the crosslinking process and solvent evaporation can be precisely controlled during membrane formation, ensuring a smooth membrane surface and avoiding membrane curling caused by uneven shrinkage. The introduction of the UV-curable monomer is to form a crosslinked network under UV irradiation, inhibiting macroscopic structural flow and creep of the ion exchange membrane during film formation and service, improving the mechanical stability of the membrane, and forming a stable crosslinked structure, thereby forming a structurally stable dielectric ion exchange membrane and effectively preventing membrane curling during drying.

The application discloses a kind of thin layer nanocomposite membranes and its preparation method and application, belong to membrane separation technical field.The method first polyamino monomer and 2,4,6-triformylphloroglucinol in organic solvent are catalyzed polymerization, and covalent organic polymer nanoparticles are prepared;Subsequently, the nanoparticles are reacted with sodium alginate to obtain hydrophilic modified nanoparticles;Finally, the modified particles are added to the aqueous phase, and the organic phase is interfacially polymerized and heat treated on the substrate to obtain a thin layer nanocomposite membrane.The application constructs a hydrophilic network and a charged nanopore, significantly improves the permeation flux of the membrane, while maintaining a high rejection rate for divalent salt, achieving the synergistic optimization of high flux and high ion selectivity, and can be applied to water treatment, desalination, magnesium-lithium separation and other fields.