1050results about How to "Reduced risk of cracking" patented technology

The invention relates to a multi-keyword plaintext and ciphertext retrieving method and device oriented to cloud storage and relates to the field of information safety. The method includes the following steps that firstly, a client terminal performs lexical analysis according to inquiry statements and generates plaintext keywords; secondly, a corresponding user index encryption key is obtained according to a main key bound with the identity of a user, and the plaintext keywords are encrypted with the encryption algorithm of the index encryption key, and ciphertext keywords are generated; thirdly, multi-keyword ciphertext retrieving is performed on a ciphertext index in a cloud storage server according to an inquire tree generated by the client terminal, and retrieved data element information and retrieved relevancy scores undergo inquiry result merging and sequencing; fifthly, inquiry result merging and sequencing are performed in the cloud storage server with the same method; sixthly, a unified sequence result is sent to the client terminal, and an inquiry result is displayed to the user. According to the multi-keyword plaintext and ciphertext retrieving method and device oriented to the cloud storage, a key management scheme which is higher in safety degree is provided, plaintext and ciphertext united retrieving can be supported and multi-keyword retrieving can be provided.

A GaN-on-Si device structure and a method of fabrication are disclosed for improved die yield and device reliability of high current / high voltage lateral GaN transistors. A plurality of conventional GaN device structures comprising GaN epi-layers are fabricated on a silicon substrate (GaN-on-Si die). After processing of on-chip interconnect layers, a trench structure is defined around each die, through the GaN epi-layers and into the silicon substrate. A trench cladding is provided on proximal sidewalls, comprising at least one of a passivation layer and a conductive metal layer. The trench cladding extends over exposed surfaces of the GaN epi-layers, over the interface region with the substrate, and also over the exposed surfaces of the interconnect layers. This structure reduces risk of propagation of dicing damage and defects or cracks in the GaN epi-layers into active device regions. A metal trench cladding acts as a barrier for electro-migration of mobile ions.

The invention discloses an identity identification method based on fingerprints, which includes the following steps: inputting the relation between fingerprints of a user and preset characters; setting and storing a preset password including the preset characters; reading the fingerprint password input by the user; converting the fingerprint password into a character string password; judging whether the character string password is identical to the preset password or not; confirming the identity identification to be passed if the character string password is identical to the preset password. The invention further provides identity identification equipment based on fingerprints. The method and equipment provided by the invention improve safety in identity identification, thereby guaranteeing the data security of users.

The invention relates to an anti-quantum computing cloud storage method and system based on a public asymmetric key pool. A client side encrypts a data file by using a file key and uploads the data file to a server, and a file key true random number is encrypted by a public key and a file eigenvalue to be uploaded to the server, wherein the public key is generated by a public key true random number. The server receives the stores the relevant data, the user side downloads the encrypted file key true random number and the public key true random number, and the public key true random number andthe key pool device are combined to generate the file key so as to decrypt the obtain the data file. The server side cannot contact all types of keys and data files of the user side. Meanwhile, the public key only open to the quantum key card is applied to encrypt the file key so as to reduce the possibility of key stealing of the malicious software. The quantum computer cannot obtain the user public key and then cannot obtain the corresponding private key so as to reduce the risk of quantum computer decoding.

The invention discloses a touch control display panel and a touch control display device. The touch control display panel comprises an organic light-emitting device array substrate; a film encapsulated layer which covers the organic light-emitting device array substrate; the film encapsulated layer comprises at least one inorganic layer and at least one organic layer; a patterning first conducting layer, a patterning insulating layer covering the patterning first conducting layer and a patterning second conducting layer are successively arranged on the outermost surface, away from the array substrate, of the film encapsulated layer; the patterning insulating layer and the patterning first conducting layer have the same patterns; and the material of the patterning insulating layer is inorganic material; the patterning first conducting layer and the patterning second conducting layer are insulated by the patterning insulating layer. By means of the technical scheme of the invention, the contact area of the pattering insulating layer and the film encapsulated layer is reduced, the stress accumulation and stress transmission between the patterning insulating layer and the film encapsulated layer are weakened and the risk of crack in the patterning insulating layer and the film encapsulated layer is reduced, which is good for flexible display.

The invention discloses a method for encryption authentication on an Ad hoc network transmission layer protocol, which comprises five parts and 18 steps, wherein the five parts are a configuration stage, an authentication stage, a key negotiation stage, an encryption process and a key update flow. The encryption authentication method of the invention is applied to a hand shaking process in the end-to-end communication between two nodes in a multihop Ad hoc network, wherein the two nodes pass through message authentication code verification (MAC) for mutual verification; after the authentication successes, key negotiation is performed by using an elliptic curve diffie-hellman (ECDH) algorithm; and a subsequent message is encrypted by using a shared key acquired in the key negotiation process as a key material and by using an advanced encryption standard (AES) algorithm, and a key update flow is initiated in a communication process. In the authentication and key negotiation process, an exclusive or gate (XOR) algorithm is used for encrypting authentication information and key negotiation information, the safety is high, the efficiency is high, the system expense is small, and the encryption strength is high; and thus, the method has a promising application prospect in the technical field of wireless networks.

The invention belongs to the technical field of building materials, in particular to a compound water-preservation and viscosity promoting material used in commercial mortar and a preparation method thereof. Ca-bentonite, na-bentonite, kaolin, sepiolite, zeolite, cellulose ether (viscosity 10000mPa.s-200000mPa.s), fly ash and lignosulfonate are mixed and then ground till sieve residue is less than 40 percent with 0.08mm square opening sieve. The invention can greatly improve the cohesiveness and consistency of mortar, reduce the stratification of mortar and improve the water retaining rate of the mortar and perfect the uniformity, stability and constructability of mortar mixture, thus promoting construction efficiency and reducing environmental pollution. Being added with the material of the invention, the strength and durability of the mortar can be improved and the hazard of shrinkage and crack can be obviously reduced. The invention is specially used in the preparation of (dry-mixed, ready-mixed) mortar for masonry, plastering and ground commodities and also applied to the preparation of thermal insulation mortar and decorative plaster, etc.

The invention discloses a flexible substrate. The flexible substrate comprises a first organic layer, a first inorganic layer, a second organic layer and a second inorganic layer. The patterned second organic layer is arranged on the first organic layer, the first inorganic layer comprises a plurality of first blocks arranged in a spacing manner, and each first block comprises a first middle portion and first edge portions arranged at two sides of the first middle portion. The second organic layer covers the first inorganic layer. The patterned second inorganic layer is disposed at one side, away from the first organic layer, of the second organic layer, the second inorganic layer comprises a plurality of second blocks arranged in a spacing manner, and each second block comprises a second middle portion and second edge portions arranged at two sides of the second middle portion. An extension direction of the second blocks is same with the extension direction of the first blocks, the second organic layer is partially embedded between the adjacent first block and second block, the first middle portions and the second middle portions are arranged in an alternating manner, and the first edge portions and the second edge portions are arranged in an overlapping manner. The flexible substrate is good in bending performance. The invention also discloses a flexible display device.

A GaN-on-Si device structure and a method of fabrication are disclosed for improved die yield and device reliability of high current / high voltage lateral GaN transistors. A plurality of conventional GaN device structures comprising GaN epi-layers are fabricated on a silicon substrate (GaN-on-Si die). After processing of on-chip interconnect layers, a trench structure is defined around each die, through the GaN epi-layers and into the silicon substrate. A trench cladding is provided on proximal sidewalls, comprising at least one of a passivation layer and a conductive metal layer. The trench cladding extends over exposed surfaces of the GaN epi-layers, over the interface region with the substrate, and over the exposed surfaces of the interconnect layers. This structure reduces risk of propagation of dicing damage and defects or cracks in the GaN epi-layers into active device regions. A metal trench cladding acts as a barrier for electro-migration of mobile ions.

The invention relates to a swelling type micro-capsule / cement-based self-repair system. Calcium alginate is used as capsule walls, epoxy resin is used as capsule cores, accordingly, swelling type micro-capsules can be prepared, and the particle sizes of the micro-capsules range from 300 micrometers to 2.5 mm; basic components in a self-repair cement-based materials include cement, sand, the micro-capsules, water and epoxy resin curing agents, and the adding quantity of the micro-capsules is 0.5-10 wt% of the cement. The cement, the sand and the micro-capsules are uniformly stirred and dispersed, the water and the epoxy resin curing agents are poured into mixtures with the cement, the sand and the micro-capsules, and pouring forming, form stripping and curing are carried out after the water, the epoxy resin curing agents and the mixtures are uniformly stirred, so that the swelling type micro-capsule / cement-based self-repair system can be formed. The swelling type micro-capsule / cement-based self-repair system has the advantages that the micro-capsules have water absorption and swelling characteristics, accordingly, water can be compensated in cement hydration procedures, and the swelling type micro-capsule / cement-based self-repair system has an internal curing function; processes for synthesizing the swelling type micro-capsule / cement-based self-repair system are simple, the swelling type micro-capsule / cement-based self-repair system is good in mechanical property, is difficult to break in cement mixture stirring procedures and can be uniformly dispersed in the cement-based materials, and accordingly cracks can be self-repaired.

Method of manufacturing resin bonding grinding wheel with stomatal in a structure utilizing resin adhesive to fixing wear particles by which resin bonding grinding wheel with uniform stomatal size and distributing can be manufactured as well as granding wheel having improved mechanical strength and good grinding performance. The method comprises: uniformly mixing the wear particles, phenolic resin adhesive, water and foaming agent together; adding solidifying promoter and uniformly mixing the mixer; casting the obtained fluidity mixer into a prescribed mold, solidifying the mixer by the effect of the solidifying promoter; thereafter removing the water contained in the solidified body by a drying process, air bubbles are generated in the fluidity mixer by utilizing the chemical reaction of the foaming agent, the bubbles forms the stomatal of the grinding wheel structure after solidification.

Thin film encapsulation for a flat panel display device and a method of manufacturing the thin film encapsulation structure. The thin film encapsulation structure of the flat panel display device includes thin film layers covering a display unit formed on a substrate, wherein the thin film layers comprise a plurality of inorganic layers and a hexamethyldisiloxane (HMDSO) layer interposed between the inorganic layers. Accordingly, as multiple layers of the thin film encapsulation structure may be formed in a single chamber, the manufacturing process may be simplified, and also, as the HMDSO layer, which is flexible, absorbs stresses, a risk of cracks occurring may also be reduced.

The invention relates to a preconstruction method of an external hanging stone of a prefabricated overlapped wall slab, comprising the steps of embedding a group of external prefabricated slab anchor bolts in the outer prefabricated slab of the prefabricated overlapped wall slab, pouring and fixing the prefabricated slab anchor bolts in the outer prefabricated slab; apply a first bolt and the prefabricated slab anchor bolts to fixedly connect at least one Z-shaped connector with the outer prefabricated slab; boring holes on the external hanging stone, embedding and fixing a group of stone anchor bolts; applying a second bolt to fixedly connect a neck type metal piece with the external hanging stone; assembling the prefabricated overlapped wall slab and the external hanging stone after completing prefabrication and conveying to the construction site; inserting the Z-shaped connector to the neck of the neck type metal piece. The stones and the overlapped wall slab are produced in the factory, the industrial degree is high, the production efficiency is high, and quality is guaranteed. The method avoids the problems that the wall body is easy to collapse, the heat insulation material is easy to damage and the fixing position is not accurate, and others when the traditional stone needs to bore holes on site to hang, and also avoids noise and dust.

This negative electrode foil for a solid electrolyte capacitor: increases capacitance, reduces ESR and leakage current, improves heat resistance, and reduces manufacturing costs; and improves the power density, achieves rapid charging / discharging, and improves the lifespan characteristics of energy storage elements such as rechargeable batteries, electric double-layer capacitors, and hybrid capacitors. The negative electrode foil or a current collector is used, which: is obtained by forming a metal layer, a mixed layer obtained by mixing a material constituting the metal layer with carbon, and a carbon layer substantially comprising carbon, on a metal foil; and is configured in such a manner as to change as the components of the mixed layer change from a component containing only the material substantially constituting the metal layer to a component substantially containing only carbon, and from the metal layer to the carbon layer.

The invention belongs to the technical field of building materials, and in particular relates to a high-flexibility and low-shrinkage fiber reinforced cement-based composite material. The composite material is prepared by mixing cement, coal ash, silicon powder, gypsum, an expanding agent, a water reducing agent, a shrinkage reducing agent, a defoaming agent, a thickening agent, fine sand, fibers and water, wherein the total mass percentage of the cement, the coal ash, the silicon powder, the gypsum, the expanding agent, the water reducing agent, the shrinkage reducing agent, the defoaming agent, the thickening agent, the fine sand and the fibers is 77-85 percent, and the mass percentage of the water is 15-23 percent. The fiber reinforced cement-based composite material has the performance characteristics of low shrinkage, high flexibility, small crack width, quickness in condensation and early strength and is high in compressive strength and good in synergism with other materials.

The invention relates to the technical field of materials, and particularly relates to a glass fiber, a surface treatment method of the glass fiber, a plastic and a shell, which are used for improving the capacity, of combining with ABS, of the glass fiber. The surface treatment method of the glass fiber comprises the following steps: putting the glass fiber to be treated in corrosive liquid to carry out corrosive treatment for 30-40 seconds, wherein the corrosive liquid comprises a corrosion inhibitor and an acidic water solution with mass fraction of 0.05-0.5% and 99.5-99.95%; putting the corroded glass fiber in a coupling agent to carry out infiltration; and drying the infiltrated glass fiber. Through the surface treatment, the capacity, of combining with ABS, of the glass fiber is relatively high; being added into ABS plastics, the glass fiber is capable of effectively enhancing the linear expansion coefficient of the ABS; and when the glass fiber is flat glass fiber, the shock resistance of the ABS plastics can be improved.

The invention discloses a method and a device of data transmission. The method and the device of data transmission are used for solving the problem that in the prior art safety of the data transmission is low. With the method, a sending end produces a random number m, and an American standard code for information interchange (ASCII) value of each character in data needed sending is changed into an m system number with an appointed bit, and then encrypted data needed sending are obtained. The random number m and the encrypted data needed sending are sent to a receiving end. Due to the fact that when a sending end encrypts the data needed sending every time, each ASCII value of each character is converted into a random m system number, results of a plurality of data needed sending and obtained after encryption are different even the same plurality of data needed sending are sent. Therefore, the risk of an encryption algorithm to be cracked is effectively reduced and security of data transmission is improved.

The invention describes a display panel and a display device. The display panel comprises a substrate, a display function layer, a thin film encapsulation layer, at least one retaining wall and at least one groove, wherein the substrate is provided with a display area and a non-display area; the display function layer is located on the substrate, and the display function layer comprises at least one inorganic insulating layer; the thin film encapsulation layer is located on one side of the display function layer away from the substrate, and the thin film encapsulation layer comprises at leastone organic layer and at least one inorganic layer; the at least one retaining wall is located in the non-display area and on the same side as the display function layer, and the inorganic layer at least covers the retaining wall; the at least one groove is located on one side of the inorganic insulating layer away from the substrate and is arranged in the non-display area between the retaining wall and the display area, the groove accommodates the organic layer, the vertical projection of the groove on the substrate has different widths in the first direction, and the first direction is a direction that the display area points to the non-display area. According to the scheme of the invention, the risk of disconnection caused by forming touch electrode lines on the retaining wall and the risk of cracking caused by film layer peeling can be reduced, and the reliability of encapsulation can be improved.

The invention relates to a semi-flexible anti-rut pavement material which comprises the following components in percentage by weight: 65-88% of big-void cement-base mixture and 12-35% of flexible grouting material. The big-void cement-base mixture comprises 1 part of cement, 4-6 parts of coarse aggregate, 0.4-1.0 part of fine aggregate, 0.1-0.3 part of water and 0-0.006 part of water reducing agent. The flexible grouting material comprises 1 part of cement, 0.65-1 part of modified emulsified asphalt, 0.1-0.35 part of water-based epoxy resin emulsion, 0-0.03 part of ground tire, 0.0025-0.007 part of water reducing agent, 0.05-0.2 part of expanding agent and 0.05-0.15 part of water. The semi-flexible anti-rut pavement material has the characteristics of high rut resistance, favorable flexibility and toughness, no seam, fewer cracks, low carbon, environmental protection and the like, can be constructed at room temperature, and is suitable for road rut treatment.

The invention discloses a fingerprint identification device and a mobile terminal. The fingerprint identification device comprises a fingerprint sensor and an optical module which is electrically connected with the fingerprint sensor, wherein the optical module comprises a optical transmitter, an optical circuit module and a photoelectric converter, and the optical circuit module is electrically connected with the optical transmitter and the photoelectric converter; the optical transmitter is used for emitting an optical signal with a special wavelength; the photoelectric converter is used for receiving the optical signal emitted by the optical transmitter and under the action of a touch control object, and converting the optical signal into an electrical signal; and the optical circuit module is used for driving and controlling the optical transmitter, and analyzing and processing the electrical signal. When a finger touches the fingerprint sensor, the action can also be applied to the optical transmitter and the photoelectric converter of the optical module, thus a fingerprint signal and an optical signal of the finger can be acquired simultaneously, thereby being capable of judging whether the fingerprint is a fingerprint of a real finger, reducing the risk that the fingerprint identification device is cracked by a counterfeit fingerprint, and improving safety.

An arrangement for locking an engine bonnet firmly to a vehicle cab for reducing stresses on the bonnet and on the locking arrangement. The arrangement includes a first locking part fastened to the cab and a second locking part fastened to the bonnet. The first part includes a spindle supported between arms of a yoke. Facing convex dished guide surfaces at least one of which is resilient are disposed at the spindle. The receiving portion on the cab has two spaced apart plates each with a recess in it for receiving the spindle extending across them. The plates are placed so that the dished guide surfaces on the yoke of the receiving portion are engaged with the plates for guiding the spindle into the recess and for holding them against relative motion.

The invention discloses a temperature-control anti-cracking method used for a concrete arch dam with a good anti-cracking effect. The temperature-control anti-cracking method used for the concrete arch dam comprises synchronous-cooling area temperature control and synchronous-cooling area height range control which are synchronously carried out. A finite element method is adopted to carry out numerical calculation and optimized analysis on five factors of a water pipe cooling process, construction progress, cantilever height, seasonal temperature change and a constraint condition, so that temperature real-time control adaptive to the synchronous-cooling area height is realized, and the anti-cracking effect of the concrete arch damis relatively good.

The invention discloses an antiquantum computing HTTPS communication method and system based on an asymmetric key pool, and the method comprises the following steps carried out at a server end: obtaining a digital certificate issued by a certificate authorization center, sending the digital certificate to a client, and recording a public key pointer random number of a server in the digital certificate. The method is carried out at a client and comprises the following steps of: obtaining a root digital certificate which is issued by a certificate authorization center and is matched with the digital certificate; verifying a digital certificate sent by the server according to the root digital certificate; obtaining a server public key from the asymmetric key pool according to a public key pointer random number of the server recorded in the verified digital certificate; encrypting a randomly generated shared key by using the public key of the server, and sending an encryption result to theserver to perform key negotiation; and performing HTTPS communication with the server by using the shared key. The security of communication is improved, and the communication is prevented from beingcracked by a quantum computer.

The invention discloses metakaolin concrete for oversized structure and a mixing proportion designing method. The metakaolin concrete is prepared by mixing 1016-1072kg of gravel, 825-848kg of refined machine-made sand, 213-282kg of P.O42.5 cement, 37-43kg of II-grade coal ash, 51-80kg of S75 slag powder, 22-26kg of metakaolin, 22-26kg of I-type UEA expanding agent, 0.6-1.5kg of polypropylene fiber, 6.26-8.13kg of coagulation-delaying polycarboxylate superplasticizer and 163-176kg of water. An aggregate close packing model is adopted, and a designing method based on wrapping and filling gravel gaps through mortar and wrapping and filling refined machine-made sand gaps through binding material slurry is adopted, so that close packing of components of the concrete is realized, improvement on strength and fluidity of the concrete is facilitated, and binding material consumption and system hydration heat can be reduced.

The invention relates to a floor laying structure of large-span steel bridge, wherein it comprises: panel, waterproof adhesive layer, transition layer, waterproof adhesive layer and pitch laying layer; said transition layer uses polymer cement concrete; the pitch laying layer uses polymer modified pitch concrete; the transition layer is irrigated on the panel with welding nails; the surface of transition layer near to the pitch laying layer has longitudinal and transverse anti-slide grooves; the transition layer can reduce the flexible modulus difference interlayer, to reduce the steering stress and improve the adhesive strength between layers; the welding nails and the anti-slide grooves can improve the friction resistances of laying layer, reduce the horizontal deformation of maximum stress area, and avoid horizontal displacement.

The invention discloses a high-resistance mechanical load solar energy battery component, comprising a cover plate material, an EVA and / or POE, a battery string group, an EVA and / or POE and a back plate material; the battery string group is formed by connecting multiple battery strings, and the battery string is formed by linking multiple small battery pieces in series; the small battery pieces are formed by cutting p type or n type solar battery pieces; after cutting, several small battery pieces with consistent width are acquired; the length and width of every small battery piece are different, and every small battery piece comprises a long side and a short side; the length and width of the cover plate material are also different, and the cover plate material also comprises a long side and a short side. The high-resistance mechanical load ability is greatly improved, power is also largely promoted, and the power generation cost is low. The invention further discloses a manufacturing method of the high-resistance mechanical load solar energy battery component.

The invention belongs to the field of construction, and particularly relates to a control method for cracks in a side wall of a pipe gallery box type tunnel and application. The method includes the steps that construction segmentation is conducted on the pipe gallery box type tunnel; and then segmented pouring is conducted in each construction segment in the longitudinal direction, wherein a construction joint of each construction segment is formed in the junction of a wall body and a top plate in the vertical direction, a two-step pouring manner is adopted, one-time pouring is conducted on a bottom plate, the side wall and a middle wall as a whole in the first step, concrete is poured on the top plate in the second step, and pouring is conducted on a middle pipe gallery transverse partition plate subsequently. According to the method, through optimization of construction processes of obtaining the reasonable segment length, arranging the construction joint position, obtaining the pouring time interval and obtaining the concrete pouring mode, the cracks and the appearance quality of concrete of the side wall are effectively controlled, and the 120-year service life of the concrete structure is sufficiently ensured.

A heat treating technology for fining microscopic structure of cast TiAl alloy ingot containing A (45-48 at%) and Nb (6-8 at%) includes such steps as quenching in salt bath plus ageing one or more times, and high-temp forging.