7results about How to "Guaranteed long-term security" patented technology

The invention provides anisotropic thermoelectric hydrogel, which is characterized in that hydrogel is used as a matrix, and a thermoelectric material is dispersed and fixed in the hydrogel matrix; the hydrogel matrix is formed by biocompatible macromolecules through a directional freezing method or a mechanical stretching method, and has an anisotropic internal microstructure oriented in a single direction. Through a directional freezing or mechanical stretching process, a microstructure oriented in a single direction is constructed in the thermoelectric hydrogel, so that the hydrogel has anisotropy of shrinkage characteristics. The two preparation methods disclosed by the invention are both based on physical crosslinking and orientation technologies, complex chemical modification or expensive equipment is not needed, and effective design of the shrinkage anisotropy of the material is realized by controlling freezing conditions (such as liquid level height and cooling direction) or stretching parameters (such as stretching ratio and cycle index); and mutual conversion between heat energy and electric energy can be realized through a thermoelectric material in the hydrogel network.

The application discloses a prestressed anchor cable tensioning and protection integrated construction method in high-cold regions, and belongs to the technical field of slope reinforcement engineering. The method solves the problem that it is difficult to accurately determine the stable stage of frost heaving action in the construction of anchor cables in high-cold regions, which leads to improper construction timing of protection. The method comprises the following steps: drilling an anchor cable hole and installing a prestressed anchor cable; pouring a cement-based slurry into the anchoring section; installing an anchor cable dynamometer at the tensioning end to continuously monitor the anchor cable axial force; tensioning and locking the anchor cable and calculating the axial force change rate; burying a temperature sensor at the hole opening to continuously monitor the temperature and calculate the temperature change rate; comprehensively determining that the frost heaving action has reached the stable decay stage through multiple conditions; then, applying a protective coating, setting a sheath pipe and injecting sealant, and heating and solidifying by using an electric heating tape. The method realizes the integrated construction of tensioning and protection, accurately determines the stable timing of frost heaving, ensures the long-term safety of the anchor cable, and is suitable for slope reinforcement engineering in high-cold regions.

The application belongs to the technical field of modified copolymer nylon and specifically relates to a modified PA6 material and a preparation method thereof. The application aims to solve the problem of high moisture absorption and lack of high insulation of the existing copolymer modified PA6 material. The application mixes caprolactam and lauryl lactam to obtain a PA6 / 12 random copolymer; pre-blends modified graphene oxide, boron nitride nanosheet and polyamide oligomer to obtain a composite suspension; coats the PA6 / 12 random copolymer on the surface, feeds the coated PA6 / 12 random copolymer into an extruder, adds the composite suspension after complete melting, uniformly mixes the composite suspension and the PA6 / 12 random copolymer, adds a flame retardant aid, and finally extrudes to obtain the modified PA6 material. The modified PA6 material prepared by the application has low water absorption and good insulation, and is not prone to electric leakage and tracking in a high-temperature working environment.

The invention discloses cryptographic module embedded software supporting an anti-quantum cryptographic algorithm and an implementation method, aiming at the problem that embedded equipment resources are limited, a layered architecture design is adopted, and threat detection, algorithm selection and a core cryptographic module are included. The method comprises the following steps: quantifying a quantum threat level (TL), combining resource states such as equipment memory, computing power, electric quantity and the like, adaptively selecting a traditional cryptographic algorithm or a PQC algorithm (CRYSTALS-Kyber, SPHINCS + variant) through a dynamic decision function, and reducing overhead by adopting technologies such as hybrid encryption, assembly optimization, sparse matrix and the like. According to the method, key generation, encryption and decryption, digital signature and algorithm seamless switching are realized, quantum attacks can be resisted, an embedded scene is adapted, an existing system is compatible, data security and service stability are guaranteed, and the method is suitable for terminal equipment which is limited in resource and needs to resist quantum threat, such as a smart power grid.

The invention relates to a high-performance organic silicon packaging adhesive for a photovoltaic module, the packaging adhesive is an organic high-molecular compound taking a silicon-oxygen bond as a main chain, and a colloidal elastomer is formed after the packaging adhesive is cured; the working temperature range of the packaging adhesive is-55 DEG C to 250 DEG C, the light transmittance of the packaging adhesive in a visible light range is not lower than 92%, and after the packaging adhesive is aged for 1000 hours under the double-85 test conditions of 85 DEG C and 85% relative humidity, the light transmittance retention rate is larger than 95%; the packaging adhesive is prepared from a monomer mixture containing dimethyl dichlorosilane and methyl trichlorosilane through high-temperature reaction, hydrolysis and condensation processes under the action of a composite catalytic system of copper and various high polymer materials, and finally a network polymer with linear and cross-linked structures is formed. The core purpose of the invention is to provide a revolutionary photovoltaic packaging material which is high in light transmittance, extremely stable in chemical property, capable of greatly improving the reliability, the service life and the power generation efficiency of a component, and environment-friendly and recoverable.

This invention relates to the field of construction technology in pebble-rich water-bearing areas, and more specifically, to a construction method for buildings in such areas. The method involves first digging drainage ditches around higher elevations to intercept surface water; then, integrating high and low elevation areas for unified excavation of the foundation pit, utilizing natural elevation differences and a gravity-fed drainage system using perforated UPVC pipes and graded crushed stone; setting up temporary water-retaining embankments and implementing staggered construction from high to low elevations, with closed-loop dedicated drainage channels at the junctions to direct water flow; installing prefabricated waterproof concrete collection wells in low-lying areas, forming a closed-loop waterproof system with foundation brick formwork and flexible waterproof membrane; and finally, constructing crushed stone drainage blind paths along the surrounding wall foundations and backfilling. This invention achieves continuous, all-weather, non-powered water control, ensuring the stability of the foundation pit slopes and zero leakage in the main structure. This invention is mainly applied to the construction of buildings in pebble-rich water-bearing areas.

The application discloses a kind of based on post-quantum signature operating system security authentication and key management method, belong to operating system security and quantum security technical field, including the following steps, establish the three-layer security architecture model based on hardware trust root-post-quantum signature chain-mixed key management;Operating system security authentication is carried out based on three-layer security architecture model;After security authentication passes, the whole life cycle management of post-quantum key is executed to generate key, and in the process, the way of hardware isolation and encryption protection is used to ensure that key is not leaked, traceable and controllable;Post-quantum signature and the post-quantum key obtained in the above step are deployed to the operating system and terminal equipment that have passed security authentication, the application uses the above method, realizes operating system full-scene anti-quantum security authentication, guarantees the safety of the whole life cycle of key, realizes the smooth compatibility with existing traditional cryptographic system, reduces migration cost, improves the overall security level of operating system.