32results about How to "Does not cause swelling" patented technology

The invention discloses a dual encryption type reversible data hiding method of an encryption domain image. The method comprises three parts, namely, image encryption, reversible data hiding of the encryption domain image, secrete data extraction and original image lossless restoration; a double encryption mechanism is adopted in the image encryption part to enhance the security; secret information can be directly embedded in the encrypted images, even if the data hider knows nothing about the original image contents, the image content security and privacy leakage problems can still be effectively solved, no complex protocol is needed between the image encipherer and the secret information embedding person, and the encryption and data embedding generate no expansion of image data; the practicability is high, if only a data hiding key is present, the hidden secret information can be directly extracted from a ciphertext domain image; if only an encryption key is present, an approximate original image can be obtained by direct decryption; and if the data hiding key and the encryption key are present, it can be guaranteed that the original image can be restored without distortion afterthe hidden secret information is extracted.

The invention discloses a ciphertext domain high-capacity image reversible data hiding method, including prediction error detection, image encryption, ciphertext domain image reversible data hiding, secret information extraction and original image non-destructive recovery, wherein in the first part, all pixel points in a grayscale image are first divided into two categories that are sampling pixelpoints and non-sampling pixel points, and then all non-sampling pixel points are marked as prediction errors and accurate predictions respectively; in the second part, the marked grayscale image is encrypted by using a binary pseudo-random sequence generated by an encryption key; in the third part, the secret information is encrypted by using a binary pseudo-random sequence generated by a data hiding key, and then the encrypted secret information is used to embed data into each non-sampling pixel point that is marked as the accurate prediction in a ciphertext domain image; and in the fourth part, only the secret information is extracted, or only the original grayscale image is recovered, or the secret information is extracted first and then the original grayscale image is recovered. The method has the advantages that information can be embedded in the ciphertext domain image, and the embedding capacity is high.

The invention provides a construction method of a novel anticorrosive coating layer. The method comprises the following steps: constructing a rubber asphalt waterproof coating layer on a base surface; and further constructing a solvent-free epoxy resin coating on the rubber asphalt waterproof coating layer, and compounding the solvent-free epoxy resin coating with the rubber asphalt waterproof coating layer in order to form the anticorrosive coating layer on the base surface. The solvent-free epoxy resin coating comprises a component A and a component B; the component A comprises epoxy resin, an epoxy active diluent, an additive, a filler and a pigment; the component B comprises modified polyamine; the epoxy active diluent is at least one of dodecyl glycidyl ether, 1,4-butanediol diglycidyl ether and ethylene glycol diglycidyl ether; the additive comprises at least one of a leveling agent, a rheological assistant, a dispersant, a substrate wetting agent, an antifoaming agent and an ultraviolet ray absorber; and the filler comprises titanium dioxide, talcum powder, wet sericite powder, wollastonite powder and ceramic powder.

The invention discloses a water-based optical lens cleaning agent composition, which comprises the following raw materials in parts by weight: 5-10 parts of organic base, 3-5 parts of inorganic base, 3-5 parts of environment-friendly chelating agent, 10-15 parts of dispersing agent, 15-20 parts of penetrating agent and 40-60 parts of de-ionized water. The water-based optical lens cleaning agent composition has the advantages that 1, the composition is an ODS (Ozone Depleting Substance) cleaning liquid substitute in the optical electronic cleaning industry, 2, the composition is a highly concentrated product and is only required to be diluted in water according to a proportion of 3-5 percent to have an excellent cleaning effect, 3, the composition is made of environment-friendly raw materials, has oral toxicity, can be contacted with skin, has extremely low inhalation toxicity and is safe to human bodies and easy to biodegrade, 4, the composition is safe to a cleaned object, does not corrode a lens, has excellent compatibility, meanwhile has excellent compatibility with most of rubber and plastic, does not swell or corrode and the like, and 5, the composition has strong cleaning power, is uniform in filming on the lens after cleaning, does not produce fog or spots and has no phenomenon of bubbling, the filming yield is greatly improved, and the production efficiency is increased.

The invention discloses a bleeding stopping cuff. The bleeding stopping cuff comprises a cuff body for binding a wound of a patient, an electric valve, an air pump, a pressure sensor and a single-chip microcomputer. The single-chip microcomputer is used for controlling the electric valve to be switched on to enable the air pump to inflate the cuff body through the electric valve. The pressure sensor is used for detecting the pressure in the cuff body in real time and transmitting the pressure value to the single-chip microcomputer. The single-chip microcomputer is used for judging whether the pressure value reaches a preset pressure value or not and controlling the electric valve to be switched off when the pressure value reaches the preset pressure value to enable the air pump to stop inflating the cuff body. The cuff body is wound around the wounded limb of the patient, the electric valve is controlled by the single-chip microcomputer to be switched on, then the air pump inflates the cuff body, the air pressure in the cuff body extrudes the wound of the patient, and therefore the bleeding stopping effect is achieved; the labor cost is reduced, the bleeding stopping effect is good, blood circulation of the limb of the patient is not affected, limb swelling of the patient is not caused, and the patient can rapidly get well.

The invention discloses an employee medical examination information authentication method based on block chain technology, and belongs to the application development field of the block chain technology. By application of the method disclosed by the invention, an employee can upload electronic medical examination information onto a Factom block chain; then the hospital where the employee does the medical examination, the head of the employee Industry Association and other notaries performs signature authentication on the electronic medical examination information uploaded by the employee and upload authentication information and a public key to the Factom block chain; and a new employer inquires the electronic medical examination information of the employee and the corresponding authentication information stored on the Factom block chain before employing the employee. By adoption of the method, the Factom is used for providing block chain bottom layer service, the operation speed is high, the writing cost is low, no block chain expansion is generated, meanwhile the electronic medical examination information of the employee is real and feasible and cannot be tempered, the employee avoids repeated medical examination when serving a new employer, and thus the time and funds are saved.

The invention discloses a mold opening mechanism with a mechanical advantage. The mold opening mechanism comprises a base, a still mold installing plate, a moving mold installing plate and a transmission mechanism, wherein the still mold installing plate is arranged on the base, the moving mold installing plate is matched with the sill mold installing plate, and the transmission mechanism is used for driving the moving mold installing plate to move front and back so as to achieve the action of mold opening / closing. The transmission comprises a bolt, a nut, a connecting rod and a hand wheel, wherein the bolt is sleeved with the nut, the hand wheel is installed on the end portion of the bolt, and the connecting rod is movably hinged between the moving mold installing plate and the nut. Compared with the prior art, according to the mold opening mechanism with the mechanical advantage, the phenomena that mold shifting and mold damaging are prone to occurring when a mold is opened and closed manually are overcome. The mold opening mechanism is simple in structure, low in manufacturing cost and wide in application range; by means of threaded transmission, operating of the mechanism is precise and reliable, the mold closing force is large, and mole swelling and leak out are avoided; operation is convenient, the process of mold opening and closing can be achieved just by shaking the hand wheel manually, the labor intensity is reduced, and the service life of the mold is prolonged; the operation time of mold opening and closing is short, and the production efficiency of products is improved.

The invention discloses a building material foaming mold with a device capable of being manually rapidly opened and positioned. The building material foaming mold comprises a stander, a static mold frame fixed on the stander, a movable mold frame movably arranged on the stander and a drive mechanism driving the movable mold frame to move, wherein the drive mechanism comprises a hand wheel and a lead screw fixed on the axis of the hand wheel, the lead screw is provided with a first lead screw nut and a second lead screw nut, threads on the part, matched with the first lead screw nut, of the lead screw is left-handed, threads on the part, matched with the second lead screw nut, of the lead screw are right-handed, and both the first lead screw nut and the second lead screw nut are connected with the movable mold frame by virtue of connecting rods. Compared with the prior art, the building material foaming mold has the beneficial effects that the driving is realized by adopting the lead screw, the mechanism is precise and reliable to move, the mold closing force is large, and the expansion and leak-out of the mold are avoided; the operation is convenient, the mold opening and closing process can be realized only by hand shaking the hand wheel, the labor intensity is alleviated, the mold closing operation time is short, and the production efficiency of the product is increased.

The invention discloses a method for reducing water-soluble zinc in zinc-containing slag produced in zinc hydrometallurgy. The method is characterized in that the method comprises steps that: A, zinc-containing slag in a pulp state is subject to primary press-filtration in a box-type filter press, such that primary filtrate and filter residue are obtained; the filter residue is left in the box-type filter press; B, the primary filtrate obtained in the step A is delivered back to a leaching process; the filter residue left in the box-type filter press is combined with pulped zinc-containing slag additionally pumped into the filter press, and secondary press-filtration is carried out, such that secondary filtrate and filter residue are obtained; C, the secondary filtrate obtained in the step B is combined with the primary filtrate; the mixture is delivered back to the leaching process; one part of the obtained filter residue is delivered to a pulping tank, and prepared pulped zinc-containing slag is delivered to the box-type filter press; the other part of the filter residue is delivered back to a lead system or a zinc system in which valuable metals are recycled, such that a press filtration period is accomplished. In the pulping process, a pulping temperature is controlled at 40 to 70 DEG C, and a liquid-solid ratio is controlled at 2-6:1. The method provided by the invention is mainly used for reducing water-soluble zinc in zinc-containing slag produced in a filtration process of zinc hydrometallurgy enterprises.

The invention discloses a system and method for treating waste water containing volatile substances and belongs to the technical field of waste water treatment. The treatment system comprises a preheater, a steam stripping rectifying tower, a reboiler, a primary condenser, a secondary condenser and a compressor. The treatment method comprises the following steps: (1) preheating the wastewater in the preheater; (2) feeding the preheated wastewater into a steam stripping rectifying tower, and indirectly heating the tower kettle wastewater into a reboiler by compressed water vapor to obtain wastewater vaporized steam and treated wastewater; (3) feeding waste water vaporized steam into the steam stripping rectifying tower to serve as a tower kettle heat source, and enabling volatile substance-containing steam to escape from the tower top and to enter the primary condenser to be condensed; (4) further performing condensing in the secondary condenser to obtain a condensed volatile product; (5) feeding the treated wastewater into the preheater for heat exchange, and then discharging the wastewater after the wastewater reaches the standard; and (6) after the wastewater is heated by the compressed water vapor in the step (2) to form condensed water, feeding the condensed water into the primary condenser to be heated and gasified to generate water vapor, enabling the vapor to enter the compressor, performing pressurizing and heating to form compressed water vapor, and feeding the vapor into the reboiler for circulation.

Belonging to the technical field of pervaporation membrane separation, the invention relates to a preparation method of a modified polyurethane pervaporation phenol / water separation membrane. The preparation method of the membrane consists of: reacting hydroxyl-terminated polybutadiene with diisocyanate to obtain a terminated prepolymer, adding diamine and cyclodextrin as a chain extender for chain extension, and taking N, N-dimethyl acetamide as a solvent to obtain a modified polyurethane solution, carrying out membrane casting on the solution on a polyfluortetraethylene plate, and conducting curing at room temperature for 1 to 1.5 hours, then moving the obtained membrane into an oven at a temperature of 80DEG C for 10-15 hours of heat treatment, thus obtaining the modified polyurethane membrane. The material synthesis and membrane preparation process of the invention is simple, and the prepared membrane has good thermal and chemical stability as well as mechanical properties. Moreover, compared with traditional unmodified polyurethane separation membranes, the membrane prepared in the invention, due to the existence of the modifier cyclodextrin, has a better comprehensive separation effect on phenol in a phenol / water mixed solution, and has a great practical value.

The invention discloses an animal femoral surgery positioning and fixing device. The animal femoral surgery positioning and fixing device comprises a femoral positioning and fixing table, wherein thefemoral positioning and fixing table is provided with bone holding forceps for clamping an animal femoral shaft, a femoral positioning and fixing panel for fixing the neck of the bone holding forceps,and a fixing bin for fixing a handle of the bone holding forceps; and the femoral positioning and fixing table is used for limiting and fixing the surgical standard position of an animal femur in a femoral surgery, so that a surgical operation platform for a three-dimensional standard image of the femoral surgery is formed. By the animal femoral surgery positioning and fixing device, standardization of a femoral external fixation surgery for implementing experimental models such as femoral fracture, segmental bone defect and distraction osteogenesis can be guaranteed, so that a femoral modelsurgery technology has repeatability and data reliability. The animal femoral surgery positioning and fixing device is assisted by a three-dimensional digital fixing frame as an external fixing frame,and is linked with a synchronous laser marking navigation unit, so that a required large-environment suitable body position for the surgery is provided for a surgical operator, accurate positioning is realized, and meanwhile, a required basic environment is provided for a surgical robot operating system.

The surgical suture material comprises an antimicrobial surface comprising fatty acid (a), octenidine dichloride and / or dequalinium chloride (b), and optionally oligomeric lactic acid ester (c). The fatty acid is chosen from lauric acid, palmitic acid and stearic acid. The low alcohol used for coating surgical suture material, is chosen from ethanol, propanol and isopropanol. An independent claim is included for coating of surgical suture material.

A surgical suture material with an antimicrobial surface is described, the surface exhibiting a coating containing a) at least one fatty acid, b) octenidine dichloride and / or dequalinium chloride and c) optionally oligomeric lactic acid esters. In addition, a process for coating surgical suture material is described which is characterized by the fact that the thread material is wetted with a homogeneous methanolic solution of octenidine dichloride and / or dequalinium chloride and subsequently the methanol is evaporated, a coating forming on the thread surface.

The embodiment of the invention discloses a resource object allocation method and device based on a live broadcast room, equipment and a storage medium. The method comprises the steps that a master node of a service side obtains synchronous data and local data corresponding to a preset resource object in a target live broadcast room, and the synchronous data is synchronously stored in master and slave nodes and comprises a waiting queue of waiting users who have applied but do not occupy the preset resource object; the waiting queue comprises first user data of each waiting user, the local data is stored in the main node and comprises second user data of invited users corresponding to the preset resource object, determining a target user according to the waiting queue, comparing the synchronous data with the local data for the target user to obtain a current state of the target user, and sending the current state of the target user to the main node. And determining whether to send an invitation for allocating the preset resource object to the target user. Through adoption of the technical scheme, the server side can automatically realize reasonable allocation of the resource objects in the live broadcasting room, the burden of the anchor side terminal is reduced, and the allocation efficiency is improved.

The invention discloses a dual encryption type reversible data hiding method of an encryption domain image. The method comprises three parts, namely, image encryption, reversible data hiding of the encryption domain image, secrete data extraction and original image lossless restoration; a double encryption mechanism is adopted in the image encryption part to enhance the security; secret information can be directly embedded in the encrypted images, even if the data hider knows nothing about the original image contents, the image content security and privacy leakage problems can still be effectively solved, no complex protocol is needed between the image encipherer and the secret information embedding person, and the encryption and data embedding generate no expansion of image data; the practicability is high, if only a data hiding key is present, the hidden secret information can be directly extracted from a ciphertext domain image; if only an encryption key is present, an approximate original image can be obtained by direct decryption; and if the data hiding key and the encryption key are present, it can be guaranteed that the original image can be restored without distortion afterthe hidden secret information is extracted.

The present invention provides a hot-melt adhesive having excellent solvent resistance and excellent adhesion to an adherend (in particular, a polyimide film) containing a battery electrolyte solution therein, and which can Contributes to the improvement of the performance of the electric device; the present invention also provides an electric device prepared by using the hot-melt adhesive. The hot-melt adhesive for electrical devices comprises an olefin-based modified polymer (A), wherein the olefin-based modified polymer (A) is a modified polymer with a silicon-containing functional group; The hot melt adhesive of the device has excellent resistance to the electrolyte of the battery (i.e., electrolyte or solvent resistance), and also has improved hot melt adhesive resistance to the battery containing the electrolyte therein. Adhesion of stickies (plastic films such as polyimide films).

The invention relates to cleaning liquid, in particular to environmentally-friendly water-based multifunctional electronic cleaning liquid for the electronic surface mount industry. The cleaning liquid comprises the following components in parts by weight: 35-60 parts of pure water, 1-3 parts of corrosion inhibitor, 3-5 parts of isomerous alcohol ether phosphate, 3-12 parts of alkaline auxiliary agent, 7-12 parts of secondary alkyl sulfonate, 3-8 parts of EO-PO (Ethylene Oxide-Propylene Oxide) copolymer, 10-25 parts of D-limonene and 5-10 parts of nonionic emulsifier. The cleaning liquid is safe to a cleaned object, cannot corrode an electronic circuit board, has excellent compatibility, good compatibility with most rubber and plastics and cannot cause swelling, corrosion, and the like, thus the cleaning liquid can be widely applied to electronic circuit boards and hardware plastic; the cleaning liquid can be used for cleaning residual soldering fluxes or residual tin cream and other dirt on a PCBA (Printed Circuit Board Assembly) at normal temperature or by warming up, and also can be used for cleaning heavy greasy dirt on hardware or plastic parts; and the cleaning liquid is an aqueous concentrated product, has strong cleaning power, can maintain good electrical performance for the PCBA and has no damages to the human body.

The invention relates to a corrosion prevention method for a short metal pipe. The method is characterized by comprising the following steps of: manufacturing a stainless steel cylinder of which the internal diameter is matched with the external diameter of the short metal pipe by using a stainless steel plate, sleeving the stainless steel cylinder on the outer wall of the short metal pipe, performing pipe expansion on the short metal pipe by using a mechanical pipe expansion method to form close fit between the stainless steel cylinder and the short metal pipe, and securely welding a port of the stainless steel cylinder and the outer wall of the short metal pipe. The method has the advantages that: the method is simple; the close fit is formed between the stainless steel plate and the short metal pipe, and one port of the stainless steel cylinder is securely welded with the outer wall of the short metal pipe, so that the stainless steel plate is more securely combined with the short metal pipe, and the phenomenon that the stainless steel plate is expanded open by pressure water can be avoided even though a welded junction between the stainless steel cylinder and the short metal pipe has an open welding point to realize long-term corrosion prevention.

The invention relates to a device for clearing accumulated dregs in pipelines without disassembly in zinc hydrometallurgy. The device comprises an acid concentration tank, an underflow intermediate tank, an underflow circulation tank, a dreg clearing pump, a first accumulated dreg pipeline, an underflow circulating pump and a second accumulated dreg pipeline. The device can clear two sets of pipelines at the same time, the dregs in the pipelines are rapidly cleared with high efficiency and good effect, the pipelines are not disassembled in the whole clearing process, the degree of automation is high, and the cost is low; the cleared ore pulp is subsequently processed to recover part of valuable metals, and meanwhile, the environment is not polluted.

A mold opening mechanism with mechanical gain, including a base, a static mold mounting plate arranged on the base, a dynamic mold mounting plate matched with the static mold mounting plate, and used to drive the dynamic mold mounting plate to move back and forth to realize opening / closing The transmission mechanism of the mold action; the transmission mechanism includes a screw, a nut set outside the screw, a connecting rod, and a hand wheel mounted on the end of the screw, and the connecting rod is articulated between the movable mold mounting plate and the nut. Compared with the prior art, the present invention overcomes the phenomenon of wrong shape and model damage that are easy to occur when opening and closing the mold manually. The present invention has simple structure, low manufacturing cost and wide application range; adopts screw drive, and the movement of the mechanism is accurate and reliable. The mold clamping force is large, which will not cause the mold to bulge and run out of fire; the operation is convenient, and the mold opening and closing process can be realized only by turning the hand wheel, reducing labor intensity. The invention prolongs the service life of the mold. The operation time of opening and closing the mold is short, which improves the production efficiency of the product.

The invention discloses a method for reducing water-soluble zinc in zinc-containing slag produced in zinc hydrometallurgy. The method is characterized in that the method comprises steps that: A, zinc-containing slag in a pulp state is subject to primary press-filtration in a box-type filter press, such that primary filtrate and filter residue are obtained; the filter residue is left in the box-type filter press; B, the primary filtrate obtained in the step A is delivered back to a leaching process; the filter residue left in the box-type filter press is combined with pulped zinc-containing slag additionally pumped into the filter press, and secondary press-filtration is carried out, such that secondary filtrate and filter residue are obtained; C, the secondary filtrate obtained in the step B is combined with the primary filtrate; the mixture is delivered back to the leaching process; one part of the obtained filter residue is delivered to a pulping tank, and prepared pulped zinc-containing slag is delivered to the box-type filter press; the other part of the filter residue is delivered back to a lead system or a zinc system in which valuable metals are recycled, such that a press filtration period is accomplished. In the pulping process, a pulping temperature is controlled at 40 to 70 DEG C, and a liquid-solid ratio is controlled at 2-6:1. The method provided by the invention is mainly used for reducing water-soluble zinc in zinc-containing slag produced in a filtration process of zinc hydrometallurgy enterprises.

A filling machine with a constant liquid level comprises filling heads connected to a high-level liquid material bin, wherein the filling heads comprise filling pipes and back-suction pipes which arevertically arranged; the filling pipes and the back-suction pipes form sleeve structures; the filling pipes are connected to the high-level liquid material bin; and the back-suction pipes are connected to a back-suction pump. The filling machine also comprises a first lifting mechanism which is used for driving the filling heads to extend downwards into to-be-filled containers and enabling the lower end openings of the back-suction pipes to be exactly positioned on a preset safe liquid level surface, wherein the back-suction flow speed of the back-suction pipes is greater than the filling flowspeed of the filling pipes; and the first lifting system is connected to the filling heads. The filling machine with the constant liquid level can be used for automatically filling material liquid into PET bottles, and is high in efficiency. In addition, the filling machine ensures that all the to-be-filled containers are finally filled with filling liquid in a uniform manner, and avoids the situation that liquid materials overflow or the liquid level surface is too low. Moreover, the PET bottles are in open states during filling, so that the PET bottles can be prevented from expanding or shrinking.

The invention discloses a COFs composite nanofiltration membrane. The COFs composite nanofiltration membrane includes a PBI ultrafiltration layer and a COFs nanofiltration layer. The PBI ultrafiltration layer is obtained by coating polybenzimidazole on a non-woven fabric As a result, the COFs nanofiltration layer is formed on the PBI ultrafiltration layer through interfacial polymerization. The COFs composite nanofiltration membrane of the invention has good pressure resistance, solvent resistance and high flux. The invention also provides a preparation method of the COFs composite nanofiltration membrane.

The invention discloses a disassembly-free cleaning agent for a fuel spray nozzle and belongs to the field of automobile engines. On the basis that the total mass of the cleaning agent is 100 percent, the disassembly-free cleaning agent for the fuel spray nozzle comprises the following components in percentage by mass: 5 to 22 percent of decarbonizer, 3 to 25 percent of accelerant, 10 to 25 percent of combustion improver and 40 to 80 percent of diluent. The disassembly-free cleaning agent for the fuel spray nozzle is prepared by uniformly mixing the decarbonizer, the accelerant, the combustion improver and the diluents at normal temperature and normal pressure. The cleaning agent can effectively clean deposit of the fuel spray nozzle, avoids deformation and swelling of plastic and rubber,is combusted completely, avoids engine knocking and does not corrode metal parts.

The invention discloses a ciphertext domain high-capacity image reversible data hiding method, including prediction error detection, image encryption, ciphertext domain image reversible data hiding, secret information extraction and original image non-destructive recovery, wherein in the first part, all pixel points in a grayscale image are first divided into two categories that are sampling pixelpoints and non-sampling pixel points, and then all non-sampling pixel points are marked as prediction errors and accurate predictions respectively; in the second part, the marked grayscale image is encrypted by using a binary pseudo-random sequence generated by an encryption key; in the third part, the secret information is encrypted by using a binary pseudo-random sequence generated by a data hiding key, and then the encrypted secret information is used to embed data into each non-sampling pixel point that is marked as the accurate prediction in a ciphertext domain image; and in the fourth part, only the secret information is extracted, or only the original grayscale image is recovered, or the secret information is extracted first and then the original grayscale image is recovered. The method has the advantages that information can be embedded in the ciphertext domain image, and the embedding capacity is high.

The invention belongs to the technical field of hydrometallurgy, and specifically proposes a copper-cobalt ore treatment process. In this treatment process, after the copper-cobalt ore is pre-leached, the leaching solution is used as a stripping agent in the acid recovery system of the solvent extraction method; the recovered sulfuric acid solution is used for pre-leaching the copper-cobalt ore, and so on. Heap leaching can also be used to replace the copper-cobalt ore pre-leaching, the recovered sulfuric acid solution can be returned to the heap leaching, the swelling water can be evaporated by heap leaching, and new water can be added as the stripping agent for the acid recovery system by the solvent extraction method. The process of the invention is simple, can greatly reduce the loss of sulfuric acid and the consumption of alkaline substances such as limestone / lime, does not cause water expansion in the system, does not discharge waste water, and can realize the process flow of circulation.