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54results about How to "Irreversible" patented technology
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Application of nano silicon dioxide sol in water-based steel structure anticorrosive paint and protective paint
The invention provides application of a nano silicon dioxide sol in a water-based steel structure anticorrosive paint, which comprises the following steps: adding a KH560 silane coupling agent, which accounts for 2-5% of acidic silica sol, into the silica sol, and coupling at 55+ / -5 DEG C to form a modified nano silicon dioxide sol; and adding into a water-based acrylic acid emulsion so as to be applied to the water-based industrial paint for steel structure corrosion resistance. The invention also provides a water-based steel structure anticorrosive paint comprises 3-6% of modified nano silicon dioxide sol, 40-60% of water-based acrylic acid emulsion, 11-16% of pigment, 16-21% of filler, 0.8-1.0% of various assistants and 10-15% of deionized water. The nano silicon dioxide sol is treated by the special technique, and reasonably matched with the emulsion to prepare the nano silicon dioxide sol modified acrylic acid water-based paint, so that the film-forming density and water resistance of the product are greatly enhanced, thereby obviously improving the protective property of the product.
Owner:CHONGQING HAILIAN WATERBORNE COATING
Advanced redox in-situ treatment system and method for restoring polluted soil
ActiveCN103920703AEfficient degradationPromote decompositionContaminated soil reclamationLiquid wasteTreatment system
The invention discloses an advanced redox innocent treatment system and method for waste pollutants, belonging to the technical fields of pollution treatment and restoration and environmental protection. The innocent treatment system comprises a waste degradation subsystem, a waste liquid treatment subsystem, an ozone water preparation subsystem, a degradation reagent addition subsystem, a detection control subsystem and a water level control subsystem. The method comprises the following steps: determining the type of waste pollutant, selecting the degradation reagent, pouring the waste pollutant into a treating pond, carrying out advanced redox treatment on the waste pollutant, carrying out innocent treatment on the treated waste liquid, reutilizing, and carrying out biodegradation treatment on the treated soil. The system and method have the advantages of obviously higher degradation efficiency and short time consumption, can treat organic pollutants within 2-3 days, can treat heavy metal pollutants within 3-5 days, greatly shorten the pollutant treatment time, and lower the cost by more than 70%.
Owner:QINGDAO ODO ENVIRONMENTAL TECH CO LTD
Data processing method and electronic equipment
InactiveCN104915591AImprove securityIrreversibleDigital data authenticationDigital signatureData treatment
The invention discloses a data processing method and electronic equipment. The method is used for solving the technical problem that an existing BIOS updating security authentication mechanism cannot ensure the security of BIOS updating files. The method is applied to the electronic equipment with a BIOS. The method comprises the steps of obtaining a BIOS file package; verifying the legality of a digital signature of the BIOS file package through a public key of a legal publisher; if the verifying result shows that the digital signature of the BIOS file package is illegal, rejecting updating of the BIOS through the BIOS file package.
Owner:LENOVO (BEIJING) LTD
Portable liquid nitrogen filling device with automatic stopping function for high-purity germanium detector
ActiveCN103742783ANot easy to blockCompact structureContainer discharging methodsContainer filling under pressureAutomatic controlContactor
The invention discloses a portable liquid nitrogen filling device with an automatic stopping function for a high-purity germanium detector. The portable liquid nitrogen filling device comprises a temperature measuring unit, an automatic control unit and a liquid nitrogen filling unit, wherein the automatic control unit comprises a 220V power supply, a start button, an alternating-current contactor, a temperature controller and an electromagnetic valve; the electromagnetic valve is arranged on an exhaust pipe of a liquid nitrogen pump; the two input ends of the electromagnetic valve are connected with an L phase and an N phase of the 220V power supply respectively through a contact KM2 and a contact KM3 of the alternating-current contactor; the electromagnetic valve is in a shut-down state when the output voltages of the contact KM2and the contact KM3 are switched on and is in a turn-on state when the voltages are switched off. By adopting the portable liquid nitrogen filling device, a temperature monitoring function is realized, the liquid nitrogen pump stops automatically when a Dewar tank is full of liquid nitrogen and the automatic control unit is irreversible when the temperature is higher than a set threshold value, so that the function of unattended operation is realized in a liquid nitrogen filling process.
Owner:NORTHWEST INST OF NUCLEAR TECH
Decorative line covered by metallic film and producing method thereof
InactiveCN101352992AHigh bonding strengthImprove anti-aging propertiesPolyureas/polyurethane adhesivesAdhesive processes with surface pretreatmentWeather resistancePliability
The invention provides a decorative line which coats metal films and a manufacturing method thereof and includes the following steps: a modeling substrate is preheated after being decontaminated and dusted and being coated with a surface affinity agent; a flexible metal film is coated with a hot-melt adhesive after being dusted and preheated; the metal film coated with the adhesive is rolled and coated with a modeling roll wheel on the surface of the modeling substrate on one surface of the surface affinity agent and the health is preserved. The decorative line made with the method is characterized by metal texture, high bonding strength, hydrolysis resistance, non-reversibility, weather resistance, and the like, and improves the texture grades of the decorative line.
Owner:北京市森诺家具材料有限公司
A system and a method for accurately identifying a target and measuring and calculating an effect in an ecological sponge-type city construction suitable area
ActiveCN109740562AIrreversibleEasy to operateForecastingCharacter and pattern recognitionClimate eventsLandscaping
The invention discloses a system and a method for precisely identifying a target and calculating an effect in an ecological sponge type urban construction suitable area. The system comprises a spatialdata acquisition module, a suitable area spatial identification module, an index control and measure design module and a construction effect calculation module. The method is used for sponge city construction from city construction planning to engineering design whole process. Accurate identification of construction and reconstruction target suitable areas and suitable grade targets in urban heatisland control and urban landscaping processes can be realized, and the effects of flood disasters and high-temperature extreme climate events under different urban construction and reconstruction scenarios can be measured and calculated. The system comprises a novel sponge city and heat island control dual-target city planning and design framework, achieves refined remote sensing classificationand artificial intelligence detection algorithm aiming at precise identification of the ecological sponge city space suitability, and can effectively simulate the effects of city construction and reconstruction on rain flood and extreme high temperature events.
Owner:INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
Digital neuropsychological test system and method
PendingCN108665962AIrreversibleIn line with traditional Chinese medicine thoughtHealth-index calculationMental therapiesSocial benefitsNeuropsychological test
The invention is a digital neuropsychological test system and method. The system comprises a host, an EEG module, a button module, a video entry module, a visual tracking module, a touch screen module, a result printing module, a broadcast module and an IC card reading module. The system makes an early scientific and accurate assessment of the tester, achieves the purpose of early detection, earlydiagnosis and early prevention of cognitive impairment, effectively slows down the decline of the cognitive function, and helps to improve the quality of life of the elderly. The system is suitable for large-scale promotion, not only benefits the diagnosis and treatment of cognitive impairment, but also helps to reduce the social burden, and has great application value and social benefits.
Owner:SHANGHAI UNIV
Thermal vanishing ink
InactiveCN104087064AThe solution system is uniform and stableNot easy to layerInksSolution systemSolvent
The invention provides a thermal vanishing ink, which consists of the following components by weight: 10-80 parts of water; 0-30 parts of a cosolvent; 1-75 parts of a colorant; 0.01-1 part of a bactericide; 0.1-5 parts of a thickening agent; 0.1-2 parts of a pH regulator; 0.01-1 part of a corrosion inhibitor; 0.1-3 parts of an inorganic oxide; and 1-30 parts of a film-forming agent. The thermal vanishing ink provided by the invention can be applied to all materials of different colors, and can show silver gray on white and other light color materials and show silver white on black and other dark materials. The color can vanish through any heating mode, and the vanished ink trace is transparent or colorless, and has irreversibility. Being environment-friendly and non-toxic, the ink has uniform and stable solution system, is difficult to delaminate and is favorable of storage, thus being widely applicable in leather products, clothing products, stationery commodities and other fields to meet the demands of showing colors clearly on all ground color materials with different dark and light colors and irreversible vanishing after heating.
Owner:王勇
Method, system and device for realizing user fingerprint safety based on cloud computing
The present invention discloses a method, system and device for realizing user fingerprint safety based on cloud computing. The method comprises: a, establishing a secret key database in a cloud fingerprint platform, wherein the secret key information in the secret key database includes platform keywords, business keywords and a business creation timestamp; b, establishing a random salt generator in the cloud fingerprint platform; c, establishing a secret key and salt terminal distribution management module in the cloud fingerprint platform to perform correlation storage of random generation salt and related secret keys, manage update and the correlation of the secret keys and salt in real time and provide an interface to allow the terminal to obtain the corresponding business secret keys and salt; and d, performing digitization of the fingerprint information extracted by the terminal, obtaining corresponding business secret keys and salt from the cloud fingerprint platform, performing encryption salting of the fingerprint information to generate a fingerprint Hash value, and transmitting the fingerprint Hash value to the cloud fingerprint platform for storage. According to the invention, the safety of the user fingerprint information can be ensured.
Owner:SICHUAN CHANGHONG ELECTRIC CO LTD
Water-based inorganic environment-friendly coating and preparation method thereof
InactiveCN108047839AGood optical performanceGood compatibilityFireproof paintsAnti-corrosive paintsWater basedEnvironmental resistance
The invention proposes a water-based inorganic environment-friendly coating and a preparation method thereof, which solve the problem that water-based coating in the prior art cannot resist acid and alkali and is low in corrosion resistance. The technical solution of the invention is implemented in the following way: the water-based inorganic environment-friendly coating is prepared from the following materials in parts by weight: 10 to 40 parts of silicasol, 20 to 40 parts of polymer emulsion, 4 to 10 parts of nano silicon dioxide powder, 3 to 6 parts of thickener, 0.1 to 0.5 part of mould inhibitor, 0.1 to 0.3 part of defoaming agent, 1 to 3 parts of film coalescing aid, 1 to 10 parts of dispersant, 10 to 30 parts of calcined kaolin, 10 to 50 parts of heavy calcium carbonate, 10 to 30 parts of pigment and 20 to 40 parts of deionized water. The compatibility between the additives chosen by the invention is better, the coating is odorless and smellless, the protection of ecological environments is benefited, the coating has the nature of inorganic matter, and does not contain any organic chemical material or solvent, and during production and application, the coating has the characteristics of no odor and no allergy, which are good for environment and ecology.
Owner:环秀(青岛)建材科技有限公司
Solidified soil retaining wall and construction method thereof
ActiveCN104674842AHigh strengthStrong expandabilityArtificial islandsExcavationsRetaining wallBuilding construction
The invention discloses a solidified soil retaining wall and a construction method thereof. The solidified soil retaining wall is applied to support of side slopes. The method comprises the following steps: S01, lofting and treating a foundation trench: setting the long edge, wide edge and height lengths of the foundation trench, determining a foundation trench excavation sideline according to the practical lengths of the long edge and wide edge of the preset foundation trench, and lofting; S02, excavating the foundation trench: performing side slope excavation according to the excavation sideline and the foundation trench height after lofting to obtain original site soil, and leveling and rolling the bottom of the foundation trench, wherein one side close to the side slope is subjected to excavation according to a preset inclination angle; S03, stirring a solidified soil mixture: uniformly stirring the original site soil, cement and a curing agent solution according to a set mixture ratio to obtain the solidified soil mixture; S04, paving a wall body and refilling plain soil; S05, curing the wall body. By adopting the scheme, materials can be obtained from local sources, and the construction cost is reduced; the construction period can be shortened; energy is saved, and environmental friendliness is facilitated, furthermore the comprehensive performance of the wall body can be enhanced.
Owner:福建省建专岩土工程有限公司 +1
Clay anti-swelling stabilizer as well as preparation method and application thereof
InactiveCN103773328AStrong erosion resistanceLong lastingDrilling compositionGlycerolSURFACTANT BLEND
The invention provides a clay anti-swelling stabilizer which is prepared from the following raw materials by weight percent: 65-80% of BH-2018 surfactant, 1-15% of sodium alginate, 1-10% of glycol, 5-15% of KCl and 10-28% of glycerol. The clay anti-swelling stabilizer is wide in raw material source, less in production consumed energy, low in cost, high in anti-swelling efficiency and comprehensive in mechanism, and has the effect of improving recovery efficiency. When 1% clay anti-swelling stabilizer is used for injection, the anti-swelling property can achieve more than 85%. The invention also provides a preparation method of the novel clay anti-swelling stabilizer.
Owner:大庆浩拓化工有限公司
Extrusion manufacture technological method of accumulator cell lead ring
The invention relates to a technological method for extruding and manufacturing a lead ring of a storage battery, and the method is characterized in that the specific process is as follows: a lower mould is heated to be above 50 DEG C; 1) lead is melted; 2) an upper mould and the lower mould are closed and sealed by pressure; 3) lead liquid is poured into the mould through the feeding port of the upper mold by gravity; at the moment, the cooling temperature of the upper mold is below 300 DEG C; 4) the lead liquid is solidified for at least 5 seconds; 5) the mandril of the lower mould moves upwards and extrudes redundant lead from the feeding port; and 6) the molded lead ring is de-molded. The technological method has the following advantages: as an added lower oil cylinder moves downwards, the oil cylinder extrudes the lead liquid in the process solidification, the produced product has increased inner density and decreased porosity which is less than 1 percent, the product molding property is good and the surface is smooth; as the porosity is low, a permeable channel for acid in the storage battery does not exist, thus reducing bad contact between wire and the lead ring caused by acid permeability effectively and prolonging the service life of the storage battery effectively.
Owner:高学清
GAP-based thermoplastic propellant and preparation method thereof
ActiveCN111620758AReduce security risksExcellent abnormal temperature mechanical propertiesNon-explosive/non-thermic compositionsPressure gas generationPolyesterPolymer science
The invention discloses a GAP-based thermoplastic propellant and a preparation method thereof. The propellant comprises the following components by weight: 7.5%-15% of a GAP-ETPE thermoplastic adhesive, 10%-25% of a plasticizer, 50%-65% of an oxidizing agent, 5%-18% of metal fuel, and 1%-5% of a functional additive. According to the invention, a GAP-ETPE material containing GAP dihydric alcohol and low molecular weight polyester dihydric alcohol as double soft segments is used as an adhesive of the propellant, a preparation process of twin-screw mixing granulation and twin-screw mixing pouringis adopted, the forming temperature is lower than or equal to 85 DEG C, physical cross-linking molding of the propellant is realized by adjusting the temperature, the limitation of time and space onthe traditional thermosetting propellant preparation process is broken through, the unique recoverable, reusable and repeated processing characteristics make the flexible production possible, the preparation period is shortened, the production and development cost is reduced, and the method has a good application prospect in the field of carrier rocket rapid manufacturing and the field of low-costproduction.
Owner:HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
Seed circulation supervision system and authentication method thereof
ActiveCN101887503AStable readingGuaranteed transmission qualityMultiple keys/algorithms usagePublic key for secure communicationEncrypted functionSecure transmission
The invention relates to a seed circulation supervision system and an authentication method thereof. A reader comprises a seed authentication information memory, an encryption unit and a core processor, wherein the seed authentication information memory stores an authorized ID of the seed and a key uniquely bound to the ID; the encryption unit is used for encrypting a random number generated by the core processor during the authentication of a seed authentication tag; the core processor is used for generating and transmitting the random number during the authentication of the seed authentication tag and matching received radio data with the random number encrypted by the encryption unit to realize the authentication; the seed authentication tag stores the ID A thereof and the key B uniquely bound to the ID A; the received random number is encrypted by using the key B and then transmitted to the reader; and in the method, the authentication is performed between the seed authentication tag and the reader and between the reader and the seed authentication data centre, and the data is transmitted after the authentication passes. The system and the method have the advantages of identifying and managing the seed authentication information, finishing flexible encryption function and implementing identity authentication and safe data transmission.
Owner:BEIJING RES CENT FOR INFORMATION TECH & AGRI
Multi-signature method and apparatus
InactiveCN104184584AImprove securityOne-wayUser identity/authority verificationAlgorithmTheoretical computer science
The invention discloses a multi-signature method and apparatus. The method comprises the following steps that: a signature at an Lth layer is obtained, wherein the L is an integer that is larger than or equal to 1 and the signature at the Lth layer is a small norm vector; a multi-signature secret key of a signature at a (L+1)th layer is determined, wherein the multi-signature secret key of the signature at the (L+1)th layer is a small norm matrix; and according to the signature at the Lth layer and the multi-signature secret key of the signature, a signature of the (L+1)th layer is determined. According to the multi-signature method and apparatus provided by the embodiment of the invention, on the basis of the small integer solution (SIS) difficulty problem at the lattice, the signature and the multi-signature unit are set as the small norm vectors at the lattice and the multi-signature secret key is set as the small norm matrix at the lattice, so that signatures at all layers can be generated by using the same algorithm. The algorithm is simple and effective; the security is high; the method has the unidirectionality and irreversibility; the corresponding verification cost is low; and the user experience is improved.
Owner:HUAWEI TECH CO LTD
Concrete anti-carbonization environment-friendly coating and construction method
InactiveCN111925675AIrreversibleImprove water resistanceCovering/liningsCement mixing apparatusSlagCarbonization
The invention relates to a concrete anti-carbonization environment-friendly coating and a construction method thereof. The coating comprises the following components in parts by weight: 2-10 parts ofsilica sol; 20-80 parts of steel slag powder; 15-40 parts of a water-based fluorine-containing acrylic polymer emulsion; 15 to 30 parts of heavy calcium carbonate powder; 0.5 to 3 parts of meerschaumpowder; 0.1 to 0.5 part of nano silicon carbide whisker; 0.1 to 2.5 parts of a water reducing agent; 2-8 parts of silica fume; 20 to 60 parts of cement; and 25-80 parts of water. Through the characteristic effects and the mutual synergistic effect of the components in the formula, the concrete anti-carbonization environment-friendly coating is good in anti-carbonization effect and good in performance of multiple properties, and can be widely applied to construction of various concrete base surfaces to form an anti-carbonization environment-friendly coating.
Owner:江西奇信集团股份有限公司
Real estate geospatial data desensitization method based on bilinear interpolation model
PendingCN111309831AIrreversibleGuarantee local detailed fittingData processing applicationsDigital data protectionData packThe Internet
The invention relates to a real estate geospatial data decryption method based on a bilinear interpolation model, and the method comprises the following steps: inputting real estate geospatial data which comprises boundary point data, boundary line data and boundary surface data of a real estate house after spatialization; selecting and establishing a proper grid based on the size of the researcharea; randomly offsetting grid node coordinates within a range required by precision; grid interpolation is carried out to calculate the offset of boundary point data; coordinate correction is carriedout on the boundary point data; and analyzing the desensitized result of the real estate registration data and the like. According to the invention, real estate geographic space data can be decrypted; the problems of confidentiality and shareability of real estate registration data are well solved; the formed decrypted real estate registration data has non-reducibility, can realize real estate transverse service sharing, Internet sharing and real estate big data analysis and wide application, effectively reduces the security level of the real estate registration data, reserves and representsreal estate space-time situation type basic characteristics, and has a good application value in practical application.
Owner:NANJING GUOTU INFORMATION IND
Zero-discharge comprehensive utilization system for waste of large-scale pig farm
PendingCN108046559ASpeed up thermal motionGood for volatilizationWater/sewage treatment by irradiationInternal combustion piston enginesPig farmsSlurry
The invention discloses a zero-discharge comprehensive utilization system for the waste of a large-scale pig farm. The zero-discharge comprehensive utilization system comprises a collecting and preprocessing unit, an anaerobic fermentation unit, a biogas utilization unit, a biogas power generation unit, a heat recycling unit, a biogas slurry processing unit, an ozone generating system, an oxidizing unit and a biogas slurry circulating processing unit. The zero-discharge comprehensive utilization system has the advantages that the system is efficient, thorough, free of secondary pollution, capable of lowering pig cultivation environment protection cost, capable of creating high economic benefits, capable of saving water and capable of protecting ambient environments; pig manure is used forperforming anaerobic fermentation, generated biogas is used for generating power to reduce the production and living power consumption cost of the pig farm, the high power consumption cost problem ofa O3 / UV advanced oxidation treatment process can be solved, and grid-connected power generation can be achieved to earn electricity fee income; processed biogas slurry tail water can be used for washing pig houses, water can be saved, pig epidemic diseases and pig house mosquitoes and flies can be reduced, and production efficiency is increased.
Owner:广东广垦畜牧工程研究院有限公司 +1
Formaldehyde removing agent and preparation method therefor
ActiveCN105153426APromote enrichmentReduce surface tensionDispersed particle separationChemical reactionAlcohol
The invention provides a formaldehyde removing agent and a preparation method therefor. The formaldehyde removing agent has a structure represented by a general formula (I) shown in the description, a general formula (II) shown in the description or a general formula (III) shown in the description. The method comprises the steps of enabling hydroxyl terminated polysiloxane and a methylene containing active hydrogen compound to be subjected to ester exchange reaction so as to remove alkyl alcohol, thereby obtaining the formaldehyde removing agent. By adding the formaldehyde removing agent provided by the invention into paint, the characteristic that a polysiloxane structure in a molecule has relatively low surface tension can be utilized in a paint film drying process, formaldehyde removing functional groups are easily carried and are enriched to the surface of a paint film, and the formaldehyde removing functional groups can be fully utilized to undergo chemical reaction with formaldehyde in air at an interface of the paint film, so that the formaldehyde removing efficiency is remarkably increased, the formaldehyde is removed, and the effect of purifying the air is achieved.
Owner:BAUHINIA PAINTS SHANGHAI CO LTD
Shifting device for a transmission of a motor vehicle having a locking device
ActiveCN101842619AIrreversibleSimple manufacturing techniqueGearing controlAxial displacementEngineering
The invention is based on the aim of providing a shifting device having a locking device for locking shifting rails for a transmission of motor vehicles, the device being safe to operate and cost-effective. The invention provides a shifting device (1) for a transmission of a motor vehicle having a locking device (11), comprising a selector shaft (2) for the preselection and shifting of gears in the transmission, and having a plurality of shifting rails (9) a, b, c, d for transmitting the shifting torques from the selector shaft (2) to the transmission, wherein the selector shaft (2) is aligned perpendicular to the shifting rails (9) a, b, c, d, and is axially (3) displaceable for the preselection of gears and is disposed pivotally (4) about the own axis thereof for shifting gears, whereinthe locking device (11) has a locking section (12) for releasing one of the shifting rails (9) a, b, c, d and for locking the other shifting rails and a guide section (15) for axially guiding the locking device (11) to a guide member fixed on the housing, wherein the locking device (11) is configured and / or disposed such that it is carried along upon an axial displacement (3) of the selector shaft (2) for the preselection of the gears, and runs freely upon a pivoting (4) of the selector shaft for shifting the gears, wherein the locking section (12) is configured as a first planar sheet metal section defining a locking plane in the planar extension, and wherein a guide plane is defined as a displacement plane between the guide section (15) and the guide member, wherein the locking plane and the guide plane are arranged parallel to each other on the same side of the selector shaft (2).
Owner:SCHAEFFLER TECH AG & CO KG
Intelligent fluorescent label and preparation method and application thereof
InactiveCN105717083AUniform particle sizeHigh sensitivityFluorescence/phosphorescenceFluorescenceSolvent
The invention relates to an intelligent fluorescent label and a preparation method and application thereof.The preparation method comprises the steps of blank micro-sphere preparation, fluorescent indicator solution preparation, inclusion of a fluorescent indicator and a blank micro-sphere and the like.The blank micro-sphere is high in sensitivity, high in detection speed, irreversible in structure, uniform in micro-sphere particle size, good in monodispersity and stability and high in luminous efficiency, the influence of external conditions such as solvent, heat, electricity and magnetism is smaller than pure fluorescent compounds, and therefore an excellent application prospect is achieved.
Owner:INNER MONGOLIA AGRICULTURAL UNIVERSITY
Glucose oligosaccharide acid derivative bioactive factor composition
The invention relates to a glucose oligosaccharide acid derivative bioactive factor composition for preventing and treating rice blast. The glucose oligosaccharide acid derivative bioactive factor composition is prepared from potassium glucose oligosaccharide acid, iodine glucose oligosaccharide acid, polypeptide and an additive which are combined according to the proportion of (35.0-50.0%): (10.0-15.0%): (39.9-49.5%): (0.1-0.5%), and all the components are weighted according to the proportion and sufficiently mixed and packaged to form powder, particles or tablets. The composition has favorable preventing and treating effects on rice blast, the application amount of the composition is 5-10g / mu, and the composition is sprayed 2-3 times at the initial stage of rice blast and is simple and convenient to apply, capable of saving labor time, high in disease prevention effect up to 70% and better in promotion effect on agricultural production.
Owner:ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
Manufacturing method for manufacturing 3D label by using photopolymer
ActiveCN111223388AReduce difficultyPrecise positioningStampsDuplicating/marking methodsPhotopolymerCoin
The invention discloses a manufacturing method for manufacturing a 3D (three-dimensional) label by using a photopolymer. An intermediate carrier is used, a hologram is mould-pressed on the intermediate carrier, and the hologram on the intermediate carrier is transferred to a printing stock by using a positioning cold stamping process. Compared with a method of directly printing a hologram on a printing stock, the method provided by the invention reduces the difficulty of directly printing the hologram, and retains the advantages of a positioning cold stamping process. The scheme of the invention has the advantages of high curing speed, good printing effect, almost no concave-convex feeling on the surface of the printed material after transfer printing and the like, the photopolymer and theprinting stock are perfectly integrated, and the photopolymer has irreversibility and cannot be stripped from the printing stock. The 3D label is suitable for the field of anti-counterfeiting or packaging labels of high-end wine, cosmetics, artware, coins, cards and gifts.
Owner:广州市丽宝包装有限公司
Optical imaging element with magnetic reflecting layer imaging unit and preparation method thereof
ActiveCN114089445ARealize the function of magneto-optical isolatorImplement the isolator functionNon-macromolecular adhesive additivesGraft polymer adhesivesPhotonic crystal structureCrystal structure
The invention provides an optical imaging element with magnetic reflecting layer imaging units and a preparation method thereof. The optical imaging element comprises a plurality of overlapped optical imaging units, and each optical imaging unit comprises an upper light-transmitting laminated body and a lower light-transmitting laminated body, each of the upper-layer light-transmitting laminated body and the lower-layer light-transmitting laminated body is composed of a plurality of light-transmitting strips with reflecting layers in parallel, and the direction of the first light-transmitting strips in the upper-layer light-transmitting laminated body and the direction of the second light-transmitting strips in the lower-layer light-transmitting laminated body are vertically intersected; the reflecting layer is a sandwich laminated metal magnetic thin layer and comprises a first metal aluminum layer, a central magnetic layer and a second metal aluminum layer. According to the invention, a binary magneto-optical photonic crystal with a building block structure can be formed, or a ternary magneto-optical photonic crystal structure can be formed when a plurality of optical imaging units are stacked, the non-reciprocal effect at the forbidden band edge reaches the maximum, the non-reciprocal phase shift region can be realized without huge thickness by using the non-reciprocal phase shift region, the optical loss is reduced, and the refraction imaging accuracy is improved.
Owner:XIANGHANG (RUDONG) TECH CO LTD
Portable high-purity germanium detector liquid nitrogen filling device with automatic stop function
ActiveCN103742783BIrreversibleWith automatic stop functionContainer discharging methodsContainer filling under pressureAutomatic controlAlternating current
Owner:NORTHWEST INST OF NUCLEAR TECH
Low-orbit satellite security authentication method based on spatial channel characteristics
PendingCN113949517AIrreversibleEffective defense against attacksPublic key for secure communicationUser identity/authority verificationCentriolar satelliteEngineering
The invention relates to the technical field of spatial information, and discloses a low-orbit satellite security authentication method based on spatial channel characteristics. The method comprises a three-layer SDN distributed control structure consisting of a ground control center, a GEO satellite controller and an MEO satellite controller. In the whole authentication process, key agreement contains timestamp information, so that the freshness of the message is ensured. After the timestamp T is acquired, whether the timestamp T is within an allowable time range delta T is detected, if the timestamp T is valid, the acquired secret key is fresh, replay attacks can be effectively resisted, symmetric secret keys generated in the subsequent authentication process are iteratively generated based on the initial KEYab, and the shared secret key needs to be updated again every time a session is ended. The new secret key is based on the Hash operation of the channel characteristic value and the message and has randomness, so that even if an attacker obtains the current shared secret key, a subsequent new secret key cannot be generated, and the independence of the authentication process is guaranteed.
Owner:南京审计大学金审学院
Optical imaging element with magnetic reflective layer imaging unit and preparation method thereof
ActiveCN114089445BRealize the function of magneto-optical isolatorImplement the isolator functionNon-macromolecular adhesive additivesGraft polymer adhesivesMetallic aluminumPhotonic crystal structure
Owner:XIANGHANG SHANGHAI TECH CO LTD +3
OPH-based template protection method for revocable binary features
PendingCN112926422AImprove protectionFeatures Compact structureDigital data protectionDigital data authenticationAlgorithmSimilarity computation
The invention discloses an OPH-based template protection method for revocable binary features. The method comprises the steps: calculating a first fixed length vector according to the similarity between a to-be-registered fingerprint image and an MCC descriptor of each sample fingerprint image in a sample fingerprint database in response to a fingerprint registration instruction; mapping the first fixed-length vector into a first aggregation vector; performing matrix multiplication on the first aggregation vector and a local Haar matrix, and repeating a product result for n times to obtain a first expansion vector; generating a random replacement seed with the same length as the first expansion vector, and performing position replacement on elements in the first expansion vector by using the random replacement seed to obtain a first replacement vector; and uniformly segmenting the first replacement vector, and generating a binary feature as a first fingerprint protection template according to the position of the minimum element in each segmented vector. According to the method for extracting the fingerprint features, original biological features do not need to be stored, a large amount of storage space is not occupied, and the matching speed is high.
Owner:XIDIAN UNIV
A method of making 3D labels using photopolymers
ActiveCN111223388BReduce difficultyPrecise positioningStampsDuplicating/marking methodsPhotopolymerEngineering
The invention discloses a method for making a 3D label by using a photopolymer. An intermediate carrier is used. Firstly, a hologram is molded on the intermediate carrier, and the hologram on the intermediate carrier is transferred to a substrate through a positioning cold stamping process. Compared with directly printing holograms on substrates, this application scheme reduces the difficulty of directly printing holograms, and retains the advantages of positioning cold stamping process; this application scheme has fast curing speed, good printing effect and printing after transfer printing The surface of the object has almost no concave-convex feeling, and the photopolymer is perfectly integrated with the substrate, which is irreversible and cannot be peeled off from the substrate. The invention is suitable for the field of anti-counterfeiting or packaging labels of high-end wine, cosmetics, handicrafts, coins, cards and gifts.
Owner:广州市丽宝包装有限公司
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