12results about How to "Avoid dissociation" patented technology

This invention belongs to the field of photocrosslinking probe technology, specifically relating to a GUSB photocrosslinking probe, its preparation method, and its application. The GUSB photocrosslinking probe has the general chemical formula C0. 13 H 18 N2O6-R, wherein R is any one of the oxalic group elements or peptide bonds. The R group covalently connects the glucuronic acid recognition core and the photosensitive unit in the GUSB photocrosslinking probe, and the R group contains no more than 4 atoms, resulting in a small size and low steric hindrance. The GUSB photocrosslinking probe provided by this invention uses glucuronic acid as the recognition core, combined with a small-volume diazacyclopropane photosensitive unit and a terminal alkyne group, to achieve µM-level in-situ covalent capture of active GUSB in complex systems such as cells or tissues. The probe of this invention significantly improves positioning accuracy, sensitivity, data availability, quantification, and enrichment, while also possessing advantages such as modular synthesis, mild conditions, and strong system compatibility, effectively addressing the technical shortcomings of existing technologies that struggle to accurately obtain GUSB activity in situ under low-dose conditions.

This invention proposes an impact-resistant seawall repair adhesive and its preparation method, belonging to the field of adhesive technology. The impact-resistant seawall repair adhesive is prepared from the following raw materials in parts by weight: 70-100 parts water glass, 30-40 parts sodium fluorosilicate, 5-10 parts ammonium chloride, 10-15 parts curing agent, 30-50 parts dimethyl silicone oil, 5-7 parts metal oxide, 2-4 parts emulsifier, and 100-120 parts water. This impact-resistant seawall repair adhesive is a silicate inorganic adhesive that can withstand extremely high temperatures and large tensile and shear forces. It boasts advantages such as high bonding strength with the substrate and abundant raw material sources, good stability, and convenient operation.

The invention belongs to the technical field of biomacromolecular structure analysis, and particularly relates to a compound system and application thereof in small molecular weight protein cryoelectron microscope structure analysis. In particular, the present invention provides a composite system named Trimbdy, which greatly enhances the overall rigidity and stability of the composite. By utilizing the Trimbdy system provided by the invention, the atomic resolution (less than or equal to 3) cryoelectron microscope structures of a plurality of proteins with the molecular weight of less than 50 kDa are successfully analyzed, and the potential of serving as a simple, universal and efficient tool is proved, so that the Trimbdy system has a good practical application value.

The application discloses a preparation method of a hydrogen electrode for water electrolysis of a nickel-molybdenum alloy, and belongs to the technical field of hydrogen energy and green hydrogen preparation. The method comprises the following steps: (1) smelting elemental nickel and elemental molybdenum to prepare a nickel-molybdenum alloy powder; (2) mixing the nickel-molybdenum alloy powder with aluminum powder and then spraying the mixture on the surface of a substrate; (3) performing heat treatment on the sprayed substrate; and (4) performing alkali leaching pore forming treatment. The application introduces the element molybdenum to form a nickel-molybdenum alloy, utilizes the difference in electronegativity between nickel and molybdenum to regulate the electronic structure of the catalyst surface, and significantly improves the hydrogen evolution reaction activity; meanwhile, the alloying and then powdering process is adopted to ensure the uniformity of the element distribution and to enhance the stability and reverse current resistance of the electrode. The electrode prepared by the application has a porous structure, high activity and long service life, and is suitable for the field of alkaline water electrolysis hydrogen production.

This invention discloses a polyvinylidene fluoride (PVDF) resin, its preparation method, and its application. The preparation method includes the following steps: (1) preparing PVDF resin emulsion particles by emulsion polymerization of PVDF monomer; (2) adding a reducing agent and a fluorinated solvent to the obtained PVDF resin emulsion particles; (3) adding PVDF monomer, a dispersant, and an oil-soluble initiator to the emulsion obtained in step (2), and then heating to carry out a suspension polymerization reaction; (4) separating the product after the suspension polymerization is completed to obtain the PVDF resin. The PVDF resin of this invention has high flexibility, high product purity, and high adhesion.

This application provides a water dispenser, including a shelf and a vertical back panel assembly disposed on the shelf. The vertical back panel assembly includes a wiring area, a pipe area, a display panel, and a water outlet connector. A hollow area is provided in the center of the vertical back panel assembly. The wiring area, pipe area, and water outlet connector are arranged around the hollow area, with the wiring area and pipe area located on opposite sides of the hollow area and extending upwards. The water outlet connector is located at the top edge of the hollow area, closer to the pipe area. The display panel is located above the water outlet connector. This separation of water and electrical circuits, along with the rational back panel layout, improves the electrical control safety and operational safety of the water dispenser.

The application relates to the technical field of display module manufacturing, and discloses a light conversion and diffusion integrated backlight module based on a perovskite quantum dot material and a preparation method thereof, which comprises a light guide plate, a blue light LED light source, a reflecting sheet and a light conversion and diffusion integrated film sheet on the light emitting side. The film sheet is made of maleic anhydride grafted polyolefin elastomer, ethylene-vinyl acetate copolymer, a ternary copolymer containing an epoxy group, polymethylsilsesquioxane and perovskite precursor and the like through extrusion and devolatilization. The epoxy groups and the anhydride groups in the film sheet are crosslinked to form a spatially confined microphase structure anchored through reaction, the perovskite luminophore is wrapped in the inside of the network, and the polymethylsilsesquioxane is distributed at the polymer phase interface. The application can block water and oxygen penetration, improve the stability of the light emitting film sheet in a high temperature and high humidity environment, realize physical isolation and optical decoupling of the light emitting phase and the diffusion phase at the same time, and improve the light emitting uniformity and photoluminescence quantum yield of the backlight module.

The invention belongs to the field of polylactic acid materials and preparation thereof, and particularly relates to a polylactic acid material with stereocomplex crystallization capacity and a preparation method of the polylactic acid material. The invention provides a preparation method of a polylactic acid material with stereocomplex crystallization capacity. The preparation method comprises the following steps: respectively initiating L-lactide and D-lactide to perform ring opening polymerization by using a functional initiator to prepare L-polylactic acid (PLLA) and D-polylactic acid (PDLA) with main chains containing amide groups; and preparing the polylactic acid material from the PLLA and the PDLA by adopting a solution blending method. In the structural formula of the functional initiator, n is an integer between 0 and 10, and m is an integer between 2 and 12. According to the invention, amide groups are introduced into main chains of PLLA and PDLA, and the interaction among chiral polylactic acid molecular chains is enhanced under the assistance of hydrogen-bond interaction formed among the amide groups, so that the stereocomplex crystallization of a high-molecular-weight polylactic acid material is effectively promoted.

This invention relates to the field of solar cell technology, specifically to an active composition for organic solar cells and an organic solar cell with high mechanical performance. The composition comprises an electron donor material, an electron acceptor material, and an active compound; the active compound is selected from one or more of the compounds shown in formula (Z-1), formula (Z-2), and formula (Z-3), and each group in the structure of the active compound is specifically selected. When the composition of this invention is applied to the active layer of an organic solar cell, it can significantly improve the mechanical performance of the device and reduce the performance degradation of the device. Formulas (Z-1), (Z-2), and (Z-3).

The utility model provides a kind of resistance disc for preventing silver layer free short circuit, including substrate, the substrate is sequentially printed and is provided with first silver layer, second silver layer, third silver layer, the end of the free end of the one side of first silver layer and the end of the free end of the one side of third silver layer are printed and are provided with carbon film layer around the periphery of second silver layer, gap is formed between the second silver layer and the first silver layer and the third silver layer respectively, insulating paint coating corresponding with the second silver layer is coated in the gap;The one side edge of the insulating paint coating is covered on the outside edge of the second silver layer, and the other side edge of the insulating paint coating is covered on the inside edge of the first silver layer, third silver layer, carbon film layer respectively.Effectively prevent silver layer free, avoid short circuit, improve reliability under high temperature and high humidity load conditions.

This utility model relates to the field of maternal and infant product technology, specifically disclosing a foldable waist stool, including: Q-shaped shoulder straps, a front chest protector, a waist stool seat, a front waist belt, and a rear waist belt. The waist stool seat is located on the front waist belt, and the inner side of the waist stool seat is curved and fixed to the waist belt. The front waist belt and the rear waist belt are connected by quick-release buckles. The waist stool seat includes a load-bearing part and a support part, which are movably connected by a lockable rotating structure. A front chest protector is located at the front end of the waist stool seat, curving towards the chest along the front end of the waist stool seat, and is connected to the Q-shaped shoulder strap via several straps with quick-release buckles. The front end of the Q-shaped shoulder strap is detachably connected to the front waist belt, and the other end extends to the rear waist belt. A support plate is embedded inside the rear waist belt. Through multiple innovative designs such as curved fit, collaborative load-bearing by the Q-shaped shoulder strap and the front chest protector, quick-release structure, intelligent ventilation, heating, and lumbar support, improved wearing stability is achieved.

This invention belongs to the field of acyclic compound technology, specifically relating to a method for preparing tert-butyl peroxide. An alkaline solution is added to acetic anhydride, and the mixture is stirred to obtain a reaction solution. A composite catalyst is added to a purified tert-butyl hydrogen peroxide solution, and the mixture is stirred to obtain a mixture. The reaction solution is added to the mixture, and the mixture is stirred to obtain an organic phase. The organic phase is acid-washed to obtain an oil phase. The oil phase is then alkali-washed, salt-washed, and freeze-dried to obtain tert-butyl peroxide. This invention purifies the tert-butyl hydrogen peroxide solution, effectively removing di-tert-butyl peroxide impurities. A composite catalyst composed of p-toluenesulfonic acid, perfluorosulfonic acid resin, and sulfonated carbon is used as the catalyst, reducing the destructive effect on the product tert-butyl peroxide and significantly improving the yield of tert-butyl peroxide, thus possessing industrial production significance.