210results about How to "Remove threat" patented technology

The invention discloses an alliance chain-based decentralized CA construction method and system, which is a set of complete CA service block chain process and design scheme, and comprises a CA chain initialization method, a consensus strategy and an anti-cheating strategy; and modification of certificate information is converted to be in a block chain transaction form and recorded in an unmodifiable public account book for members to look up. According to the alliance chain system applying a CA chain, provided by the invention, corresponding business work and alliance chain maintenance work are finished by calling services provided by a CA certificate management block chain module, a block chain service module and an intelligent contract module, so that the CA decentralization operation ofan alliance chain is realized, and the centralization threat possibly faced by the alliance chain containing centralized CA services is eliminated.

The present invention relates to a method for preparing chitin and chitosan oligosac charide. The method comprises the steps that usual raw materials such as the crust of shrimp and crab, the insect crust or the fungal mycelia, etc. are micronized through the dry process or wet process; the carapace material of the obtained fine powder raw material is decalcified with the chemical process, and then is defatted and deproteinized with the method of micro-organism compound enzyme coarse enzyme liquid co-enzymolysis, and the insect and fungus fine powder thereof is directly defatted and deproteinized; a whole cell immobilizing bioreactor of a chitin deacetylase high-yield producing strain is prepared, to perform the circulatory deacetylation to the chitin and then obtain chitosan with corresponding degree of deacetylatoion; obligate anaerobic acid-producing bacterium and high-yield producing chitosan bacterium are utilized, the chitosan is submerged and fermented in the liquid, to obtain chitosan oligosaccharide with high water solubility. The present invention has the advantages that the method is helpful to fully utilize the resources, and makes the waste to the worth, at the same time, the default of the manufacturing process of the chemical process can be avoided, the production efficiency is improved, the energy is saved, the consumption is reduced, the byproduct with corresponding high value added can be produced, the comprehensive economic benefits of the relative secondary industry are obviously improved, the industrial development is promoted, and the multi-win effect is attained.

The invention relates to a liver cell membrane bionic liposome drug carrier, a preparation method of the liver cell membrane bionic liposome drug carrier, and application of the liver cell membrane bionic liposome drug carrier. The liver cell membrane bionic liposome drug carrier is characterized in that (1) the liposome drug carrier has a cell membrane protein component; (2) the liposome drug carrier is capable of loading drug in vitro, and is used for cell targeting fusion release; (3) the cell membrane protein component of the liposome comes from immortalized human liver cells, and is used for conveying targeted shear plasmids of a hepatitis virus genome; (4) the cell membrane protein component of the liposome comes from an immortalized liver tumor cell line, and is used for targeted drug delivery of liver tumor. The liver cell membrane bionic liposome drug carrier can be used for in vivo targeted hepatic cell transmission and drug delivery of CRISPR (Clustered Regularly Interspaced Short Palindromic Repeat) gene targeting plasmids.

A method and system of securing account is provided. When a client computer requests access to an account accessible via a server, the server determinates a mac address associated with the client computer and compares it to a mac address associated with the account. If the mac address of the client computer is not the same as the mac address associated with the account, the server initially denies access to the client computer, but may allow access after verification of the client computer by the user associated with the account.

The invention discloses a preparation method of a sprayed surface layer of an environment-friendly polyurethane plastic track. The method comprises the steps of preparing a component A: adding polyether polyol into a reaction kettle, stirring and heating to 80-160 DEG C, dehydrating, cooling to 40-50 DEG C, adding isocyanate, stirring, and performing constant-temperature reaction at 80-85 DEG C for 2-4 hours; preparing a component B: uniformly mixing polyether polyol, a chain extender, a plasticizer, an ultraviolet light absorber anti-mildew agent, a thixotropic agent, a silane coupling agent and filler, shearing at a high speed, milling, and performing vacuum heating at 60-70 DEG C for 1-3 hours; mixing the component A and component B at a mass ratio of 1:(3-5.5); adding an inert amine dryer; stirring uniformly and spraying on the bottom layer of the polyurethane track. By adopting the method disclosed by the invention, the specific pungent smell of a conventional polyurethane track is avoided, the foaming effect is reduced, the usability of the track is improved, and the service life of the track is prolonged.

The invention relates to a water-cleaning gluing head for a multi-component polyurethane needle valve, in order to solve the problem that the traditional double-component polyurethane gluing head must be cleaned with a solvent and cannot be cleaned with water. The multi-component polyurethane water-cleaning gluing head comprises a motor, a transmission shaft, a stirring blade, a cup moving part, a valve base, a middle valve body, an upper valve body, a valve fixing plate, an component needle valve A, a component needle valve B, a water valve A, a water valve B, a water valve C, a water valve D and an air valve, wherein a cup base is connected with the valve base; a sealing ring A, a sealing ring B and a sealing ring C are mounted on an outer ring of a moving cup body; a check ring, a sealing circle and a sealing ring are mounted on an inner ring of the moving cup body; and a fixing sleeve is mounted between an ending opening on the cup base and the valve base. The manner of cleaning with water and then cleaning with compressed air is realized; the cleaning time is shortened; the threat to the health of operators and the environmental pollution caused by the solvent are eliminated; the structure is simple and compact; the mounting is convenient; the repairing is quick; and the stability is increased.

The invention relates to a safe distribution file system, which includes a registration server, a metadata server, an object storage apparatus and customer terminals. The registration server is used for verifying identity of customers, and providing content notes and a first session key for requesting access files by verifying the corresponding customer; the metadata server provides file notes for file access, head file and a second temporary session key to the corresponding customer according to the received directory notes and the access request ciphered by the first temporary session key; the object storage apparatus transmits cryptograph files to the corresponding customer according to the received file notes and the access request ciphered by the second temporary session key; and the customer terminals decipher cryptograph files using the access request corresponding to the first and the second temporary session key and through the head file for reading and writing of the corresponding customers. The invention can provide safe and effective guarantee to the access to the file of customers.

The invention concretely relates to a waste dump extinguishing method to solve problems of easy combustion resumption and generation of a large amount of harmful gases of present waste dumps. The method comprises the following steps: 1, initially grasping the spontaneous combustion case of a waste dump; 2, distributing points on the surface of the fire zone of the waste dump according to a 3-5m grid space, and calibrating and drafting an isothermal line and a gas isoline; 3, determining the depth of the fire zone or hidden combustion points; 4, carrying out waste dump classification and potential safety hazard screening, and treating in a zoning installment mode; 5, carrying out extinguishing cooling on the waste dump with naked fires, carrying out slope cutting, grading and packway construction on side slopes, and carrying out loess coverage; 6, punching and grouting, wherein a flushing solution used in punching is a colloid material, the end angle of a drill is 45DEG, and a composite gel extinguishing material is adopted as a grouting slurry; and 7, carrying out reclamation and ecological reconstruction according to a case that the loess layer thickness is 0.5-0.6m, the vibratory compaction frequency is 6-8, the compaction coefficient is 0.90-0.95, and green side slope plants adopt shrubs. The method has the advantages of elimination of threats of factors of landslip, harmful gas pollution and the like to residents, land reclamation, and repeated extinguishing investment reduction.

The invention relates to the technical field of gluing, in particular to full-automatic robot gluing equipment and a process technology which are used for two-component polyurethane gluing. The full-automatic robot gluing equipment is characterized in that the equipment comprises a three-axis robot or a four-axis robot or a five-axis robot or a six-axis robot, a glue supply device, a two-component gluing head, a two-station automatic gluing workbench or a multi-station automatic rotary gluing workbench, plasma treatment equipment, a waste cleaning solution recovery device and an intelligent control system. The three-axis robot or the four-axis robot is of a gantry type or cantilever type structure. The two-component gluing head and a plasma treatment head are fixed to the three-axis robot or the four-axis robot and can be linked in the X axis, the Y axis and the Z axis. The five-axis robot or the six-axis robot is an articulated robot, and five-axis linkage or six-axis linkage of the two-component gluing head and the plasma treatment head can be achieved. According to the novel polyurethane gluing equipment and the process technology, the proportion is precise, glue tape performance is stable, and the sealing effect is good.

The invention sets forth a method and a device for blocking a botnet control channel based on an SDN (Software Defined Network) technology. The device comprises a system control module, a flow table strategy module and a traffic cleaning module. The system control module is used for receiving key parameters configured by a user and transmitting the key parameters to the flow table strategy module and the traffic cleaning module, and simultaneously displaying the running state of a current system to the user. The flow table strategy module calculates a flow table according to the user configured parameters and the current network topological structure, and transmits the flow table to an SDN switch through an SDN controller, thus redirecting the traffic conforming to control channel characteristics in a network to the traffic cleaning module. The traffic cleaning module precisely matches the received traffic by using a technology of deep packet detection and the like, filters the traffic conforming to control channel characteristics, and returns other traffic to the network to ensure normal communication.

The invention relates to the technical field of gumming, in particular to five-axis robot gumming equipment and a technology which are used for two-component polyurethane gumming. The five-axis robot gumming equipment is characterized by comprising a five-axis robot, a gum supply device, a two-component gumming head, a double-station automatic gumming workbench or multi-station automatic and rotary gumming workbench, plasma processing equipment, a waste washing liquid recycling device and an intelligent control system. The five-axis robot is a five-joint robot. A workpiece is put on the double-station automatic gumming workbench or multi-station automatic and rotary gumming workbench. The workpiece is fixed or can rotate or swing or move along one axis. The two-component gumming head and aplasma processing head can achieve five-axis linkage. The gum supply device comprises a gum A barrel, a gum B barrel, a gum A metering pump, a gum B metering pump, a gum pipe, a gum supply pipeline, a pipeline support, a gum A material barrel and a gum B material barrel. The polyurethane gumming equipment and the technology are novel, accurate in matching ratio, stable in adhesive tape performance and good in sealing effect.

The invention provides for a telecommunications chip card for logging into a mobile a digital cellular mobile telecommunications network (107). The telecommunications chip card comprises a chip card reader interface for communicating with a mobile telephone device, a chip card processor means, and a secure memory means (302) for storing programs for execution by the chip card processor means. The secure memory means contains a program (304). The program causes the chip card processor means to: perform (200) a first cryptographic mutual authentication between the telecommunications chip card and a terminal device (502), receive (214) a configuration message (400, 402, 404, 406, 408, 410, 524) via the chip card reader interface, store the (216) configuration message in the secure memory means, and delete (218) the program from the secure memory means.

The invention discloses a method using electrolytic manganese slag to manufacture an active mixed material. According to the preparation method, an activator and a reducing agent are added into electrolytic manganese slag according to a certain ratio so as to carry out physical and chemical reactions at a high temperature; the reaction products are calcined, and finally the calcined clinker is cooled to obtain the active mixed material. The active mixed material has the properties of volcanic ash, and can be used as the active mixing material in cement industry and composite blending material in commercial concrete industry. A large amount of acid leached slag discharged by electrolytic manganese plants can be used to produce the active mixed material, the environmental pollution generated by harmful components in electrolytic manganese slag is radically eliminated, the clean production of electrolytic manganese can be realized, the pollution is comprehensively controlled, and high economic benefit and environment protection benefit are generated.

The invention relates to a short hanger rod longitudinal limit device of middle or lower truss arch bridge, which can effectively limit the longitudinal displacement of short hanger rod, eliminate fatigue break-down and stress corrosion, to confirm the safety and prolong the service life of arch bridge. Wherein, it comprises at least two connecting rods between the cross beam (14) and the nearby short hanger rod beam (15), while said connecting rods are transversely distantly arranged along the bridge beam (13); two ends of each connecting rod are hinged with the cross beam (14) and the short hanger rod beam (15).

The present invention discloses a high reliability semiconductor package structure, which includes a lower heat sink, a die, an upper heat sink, a lead frame and a package body. The lead frame and the upper heat sink contain separately a first bending unit and a second bending unit that are electrically connected. The upper and lower heat sinks are attached to two opposite surfaces of the die and sink the high power transient heat generated at the die. The lower heat sink also has an indentation that circles the die and contains extra solder that might otherwise contaminate the die. Package body contains and protects the die, the upper and lower heat sinks and the lead frame. With the implementation of the invention, the reliability of the semiconductor package structure is promoted and the EMC durability together with the operable power is enhanced.

The invention relates to a method for preparing precipitation-method white carbon black by utilizing organosilicon dust-containing tail gas hydrolysate. The method comprises the following steps: a, mixing the organosilicon dust-containing tail gas hydrolysate with an dispersion aids at the mass ratio of 1:(0.1-0.5), wherein the dispersion aids are selected from low-carbon alkane, micromolecular alcohol or low-molecule aromatic hydrocarbon; b, adding caustic sodium solution into the mixture obtained in the step a under the stirring condition and mixing, after the reaction is finished, standing and layering, performing filtration and activated carbon decoloration to clear liquid in the middle layer, to obtain colorless clarified sodium silicate solution; c, adding surfactant into the sodium silicate solution, increasing the system temperature to be more than 60 DEG C, adding acid liquor while stirring until the pH value of a reaction system is equal to 7, stopping addition, standing and aging, filtering, performing azeotropy dewatering, and drying to obtain the product. The current organosilicone monomer plant always piles up or fills the organosilicon dust-containing tail gas hydrolysate, and the method can change wastes into valuables, and the organosilicon dust-containing tail gas hydrolysate can be converted into the white black carbon product.

The invention relates to a device and a method for producing regenerative electrolyte from aluminum-electrolysis carbon residues. The device comprises a sorting platform, a carbon residue stock bin, a crushing device, a first magnetic separation device, a ball milling device, a flotation tank, a second magnetic separation device, a sedimentation basin, a feeding device, a drying device, a third magnetic separation device, an intermediate frequency furnace, a dust-removal device and a chimney, which are sequentially connected with one another, wherein a carbon powder tank, a filter-press device and a carbon powder bin are further sequentially connected to the flotation tank, and a regenerative electrolyte bin is connected to the intermediate frequency furnace. The method comprises the following steps: (a) raw material sorting, (b) carbon residue crushing, (c) ball-milling, (d) flotation, (e) drying, (f) regenerative electrolyte refining, and (g) tail gas treatment. The method has the beneficial effects that the carbon residues are sorted to be a utilizable value resource, and basically no industrial waste residue is generated; the process is simple, the processing cost is low, the industrialized application is easily realized, the production water supply is completely recycled in the whole process, no polluted gas is discharged, and the method is a brand new method for processing and comprehensively utilizing the carbon residues and has a high promotional value.

The invention discloses a boundary coal shortwall continuously-mining tunnel arrangement and coal pillar preserving methods, according to three typical overlying rock structures, three coal pillar arrangement methods are proposed, and the three coal pillar arrangement methods are respectively a block section wide coal pillar arrangement method, a block section narrow coal pillar arrangement method and a block section non coal pillar arrangement method. Compared with the traditional shortwall continuously-mining tunnel technique tunnel arrangement and coal pillar preserving methods, by the boundary coal shortwall continuously-mining tunnel arrangement and coal pillar preserving methods, the coal pillar size is reduced, the recovery rate of resources can be improved, the roof essential security can be realized, roof safety can be effectively controlled, tunnel excavation and maintenance amount can be reduced, and the risk of coal spontaneous combustion can be reduced.

The invention discloses a system for providing computer network security. The system comprises multiple intrusion detection modules, multiple management analyzers and a controller. The intrusion detection modules are used for collecting data transmitted on the target network segment, according to an intrusion rule preset by an administrator through a region management analysis center, executing the real-time tracking detection to an intrusion behavior from the inside and outside network. The management analyzers are used for managing a data detector, and executing the analysis of warning information. The controller is used for, through the guidance of a corresponding instruction of a security management center, configuring a network device, eliminating a threat, intercepting an intruder, sending a warning to an inside network user, and repairing bugs. The system is capable of improving the network security of the computer, convenient for detecting the intrusion and reminding the administrator.