4results about How to "Strong environmental tolerance" patented technology

This invention relates to a method for preparing a bimodal hydrogel detection reagent for carbofuran residues in cucumbers, belonging to the field of food safety testing. The bimodal hydrogel detection reagent is a hydrogel-like detection reagent synthesized by adding a copper-doped metal-organic framework to a sodium alginate-calcium carbonate hydrogel system. The bimodal hydrogel detection reagent is a three-dimensional network structure material. The detection limit of the bimodal hydrogel detection reagent for carbofuran in cucumbers is 17.59 μM in the colorimetric mode (0-250 μM) and 5.98 μM in the fluorescence mode (0-180 μM), achieving bimodal detection. This not only enables real-time on-site monitoring of carbofuran residues in cucumbers but also ensures the accuracy of the detection results through cross-validation between the two modes; the detection time is within 1.5 hours, and it exhibits good specificity for carbofuran residues in cucumbers.

The invention discloses a double-top-electrode 4H-SiC position detector and a preparation method and application thereof. The double-top-electrode 4H-SiC position detector comprises a 4H-SiC substrate, a first electrode, a second electrode and a third electrode, the first and second top electrodes are arranged on the silicon surface of the substrate and are separated from each other; the bottom electrode is arranged on the carbon surface of the substrate. According to the detector, high-precision linear detection of the incident light position is realized in a single 4H-SiC material system by using a discrete double-top-electrode structure, and the problem that a traditional single-electrode structure cannot perform position sensing is solved; meanwhile, the problem of a heterogeneous material interface is fundamentally avoided through the full 4H-SiC-based monolithic structure, so that the long-term stability and reliability in extreme environments such as high temperature and intense radiation are remarkably improved by virtue of the excellent wide-band gap characteristic of the 4H-SiC material and the intrinsic stability of the structure while the high position detection precision is maintained; the problem that an existing position detector with a complex structure is insufficient in environment tolerance is solved.

The invention belongs to the technical field of biological medicine, and particularly relates to a preparation method of a probiotic hydrogel material and application of the probiotic hydrogel material in treatment of acute radioactive intestinal injury. In order to solve the clinical key problem of radioactive intestinal injury, a novel biological material TG-CCS-coated DY802 of thiolated synchronously modified chitosan hydrogel TG-CCS loaded with'localized high-response 'lactobacillus salivarius DY802 is constructed. The synthesis process of the material is synergistic and time-saving, has excellent biological safety and tumor inhibition experiment performance, and can comprehensively repair four barriers of the intestinal tract: ROS is removed, and tight junction protein is protected to repair the physical barrier; forming a hydrogel protective layer to reinforce the chemical barrier; the flora diversity is improved, and the prebiotic effect is exerted to repair the biological barrier; the sphingomyelin metabolism and ceramide abundance are regulated and controlled, the abnormal infiltration of NK cells is inhibited, and the immune barrier is remodeled. Therefore, the probiotic hydrogel material disclosed by the invention is clear in treatment mechanism and remarkable in clinical transformation potential and application value.

This invention discloses a self-healing high-strength composite geotextile based on MICP technology and its preparation method. It comprises a first bio-fiber geotextile, a high-strength composite geotextile, and a second bio-fiber geotextile arranged sequentially from bottom to top. The first bio-fiber geotextile is composed of animal fur fibers, plant stem and leaf fibers, and synthetic fibers, and is formed by needle punching. The high-strength composite geotextile is composed of high-strength warp fibers, high-strength weft fibers, and polypropylene fibers, interwoven in a cross-hatching manner to form a grid-like structure. The central pores of each grid-like structure formed by the high-strength warp fibers, high-strength weft fibers, and polypropylene fibers of the high-strength composite geotextile are uniform in size and uniform in shape. The second bio-fiber geotextile, composed of animal fur fibers, plant stem and leaf fibers, and synthetic fibers, is needle-punched through the central pores of the grid-like structure of the high-strength composite geotextile and connected to the fibers of the first bio-fiber geotextile.