189results about How to "Security advantage" patented technology

The present invention discloses a security white box realizing method and device for the national cipher standard algorithm SM4, discloses essential components of equipment required by the white box SM4 algorithm, and belongs to the technical field of information security. With adoption of the method and the device, secret keys embedded into cipher software can be effectively protected in untrusted computer terminals. The white box SM4 password algorithm provided by the present invention achieves safe realization of the China commercial block cipher standard SM4. Secret keys are embedded into lookup tables, randomly selected affine codes are used for protecting the lookup tables, and thus the secret keys embedded in the lookup tables are protected. A TTC lookup table and a TRT lookup table are used in the algorithm, the last xor operation of output data of the TTC lookup table is embedded into the TRT lookup table, and output data of the TRT lookup table is protected by new 32-bit affine codes, so the situation of offsetting 32-bit affine codes embedded in the lookup tables by combining lookup tables can be prevented, thereby preventing reduction of code cracking difficulty, and realizing the protection aim.

The invention relates to a method for retreading the old porcelain brick wall by the paint, a retreading decorative layer composed of a interface binder layer (2), a first polymer cracking-resistant putty layer (3), a second polymer cracking-resistant putty layer (4), a glass fiber girding cloth (5), a third polymer cracking-resistant putty layer (7), a double-component flexible putty layer (9), a smooth surface putty layer (9), a seal coat layer (10), a middle coating layer (11), a flexible silicone-acrylate latex paint layer (12) and a fluoric-carbon coating varnish layer (13) is formed on the old wall surface porcelain brick of the old wall (1), an anchor nail (6) passes through the glass fiber gridding cloth (5), the second polymer cracking-resistant putty layer (4) and the first polymer cracking-resistant putty layer (3) and is embedded in the old wall (1) for the mechanical reinforcement, all layers above are dried and solidified and are integrated with the old wall (1) firmly to complete the retread of the old wall surface. The construction cost and the labor strength are low, the old porcelain brick on the wall surface can not fall off, the decorative is high.

The invention relates to a modified super-hydrophobic material-coated lithium ion battery high-nickel cathode material and a preparation method thereof. The surface of the lithium ion battery high-nickel cathode material is coated with a modified super-hydrophobic material, and particles and particles are bridged by the modified super-hydrophobic material; the modified super-hydrophobic material is obtained by depositing a nano material on the surface of a super-hydrophobic material. Through surface modification of the super-hydrophobic material, the hydrophobic and electrolyte hydrophilic properties and the electrical conductivity of the super-hydrophobic material are improved, then the modified super-hydrophobic material is coated on the surface of the particles of the lithium ion battery high-nickel cathode material and between the particles in a form of three dimensional network, and thus the high-nickel cathode material surface hydrophobic electric conductive treatment is effectively realized, reaction of environmental moisture with surface free lithium and side reactions generated by trace water and an electrolyte are reduced, and safety, circularity and storage performance of the lithium ion battery high-nickel cathode material in batteries are improved.

The present invention relates to safety eyewear having a nose piece structure with multiple axes of adjustment. The nose piece structure includes a nose support and a nose pad. The nose support having a substantial inverse V or U shape configured for attachment to a portion of eyewear. The nose pad has a metal core overmolded with a soft deformable material which can be adjusted along an axis. An insert portion of the metal core extends outside of the material of the nose pad along a horizontal axis for insertion within the receiving portion of the nose support. The nose pad defines multiple non-uniform fins for comfort and adjustment along an axis. The receiving portion and the insert portion attached together to allow adjustment of the nose pad along an axis.

The invention relates to a power cell module connecting structure method. A power cell module is composed of a plurality of single cell groups, the adjacent power cell modules are connected through a connecting structure, the connecting structure comprises a PCB (printed circuit board), and the PCB plate is provided with more than one connector; the connector comprises a metal shell the two ends of which are communicated, the shell is internally provided with a spring piece, and a support ring is arranged between the spring piece and the inner wall of the shell and is used for fixing the spring piece and the shell; the PCB plate is provided with through holes, the shell of the connector is electrically connected with the PCB plate, and connecting holes are formed in the connector; and the contact pins of each single cell in a power cell module on the two sides of the PCB are inserted into the connecting holes of the corresponding connector, the contact pins are kept to be electrically connected with a spring piece in the connector, and the monomer cells in the adjacent power cell modules are electrically connected through the connector. According to the invention, the connector is used for replacing a bolted connection, the contact pins and the connector are elastically connected, and the structure can not generate a loose phenomenon because of vibration.

A system for determining the true airspeed vector, defined by a magnitude and by a direction, of an aircraft comprising a fuselage, comprises four laser anemometers each having a single measurement path so as to measure a local component of the true airspeed and being distributed in different locations around the fuselage of the aircraft; and means for calculating the magnitude and direction of the true airspeed vector of the aircraft using the four measurements of components of the true airspeed.

An imaging method for microcalcification displays microcalcification distribution by acquiring and overlapping a photoacoustic image of microcalcification and an ultrasonic image of tissue. The image acquired by the present invention, in comparison to images acquired by ultrasonic and X-ray mammography, has advantages in no speckle noises, higher optical contrast, higher ultrasonic resolution, and so on. The present invention also has advantage in safety by adopting a light source having no ionizing radiation. An imaging method for diagnosing breast cancer is also herein disclosed.

The invention discloses a method for preparing enoxaparin sodium, comprising the steps of salinizing, drying, esterfying, alcohol precipitating, oxidizing, alcohol precipitating, fine filtering and freeze drying. In the method provided by the invention, a hydrophilic liquid phase reaction, a hydrophobic liquid phase reaction and a solid phase reaction are adopted, so that macromolecule sodium heparin is degraded into micromolecule sodium heparin with a specific structure, and the molecular weights of products and molecular weight distribution ranges are controlled, thus anti-FIIa activity resulting in bleeding risk is greatly reduced, the anti-FXa activity is relatively improved, and the product effectiveness and safety advantages are obvious. The enoxaparin sodium can be used for effectively preventing venous thromboembolism and pulmonary embolism, can be used for thrombosis before and after operations of orthopedic surgery and neurosurgery, and can be used for greatly reducing apoplexy risk, more effectively reducing death, cardiac failure and recurrent angina of patients suffering from unstable coronary artery syndromes, reducing hypertriglyceridemia and effectively eliminating the side effects of haemorrhage, osteoporosis and induced thrombocytopenia after long-term use of common unfractionated heparin sodium and derivates of common unfractionated heparin sodium.

Provided herein are methods for manufacturing lithium-metal anode [18] assemblies for thin-film, thick-film and hulk secondary batteries that use liquid or gel-type electrolytes [14], and lithium-metal anode [18] assemblies for thick-film and bulk secondary batteries that use solid electrolytes [18]. These methods involve electrolytic formation of a lithium metal anode [18] between a protecting lithium-stable, solid electrolyte [18] material and an eieethcaiiy-Gonductive substance [20]. Secondary lithium_ batteries made by these methods aw also provided.

A surgical instrument for treating atrioventricular valve prolapse of the drained human heart, includes a handle for being held by a surgeon, a shaft extending distally from the handle, the shaft having a lumen open to a shaft distal end, a cannulated needle arranged in the shaft; with a distal end of the needle protruding from the shaft distal end at least in one possible needle position. The needle accommodates a first, distal implant equipped for being anchored in a papillary muscle, and a second, proximal implant shaped to hold on to a leaflet of an atrioventricular valve, the first and second implants each including a chord connector portion for connecting the respective implant to an artificial chord. The apparatus further includes a trigger arrangement for releasing the first, distal implant upon a first release actuation and for releasing the second, proximal implant upon a second release actuation.

The invention discloses an Internet of Vehicles equipment identity authentication method based on the blockchain technology. According to the method, a distributed blockchain CA system is constructedbased on a blockchain thought. The identity authentication of the Internet of Vehicles communication node is completed through CA block chain design of a double-chain and double-block type hybrid structure. The double blocks are an authoritative node updating block and a newly added certificate block. The authoritative node updating block is used for updating current legal and effective authoritative nodes. The newly added certificate block is used for recording communication nodes such as legal vehicle-mounted communication equipment, roadside infrastructure and a remote server which are newly accessed to the network. The double chains are an authoritative node updating chain and a common chain, the authoritative node updating chain is connected with the adjacent authoritative nodes, andthe common chain is directly connected with the adjacent blocks without distinguishing block types. According to the method provided by the invention, the security authentication of the identity can be completed without depending on a third party in an unsafe network environment. Compared with a traditional distributed CA system, the distributed CA system has the advantages of time performance, space performance and safety performance.

The invention relates to a cosmetic and an application of a perilla extract in the cosmetic as a transdermal penetration enhancer. The cosmetic provided by the invention contains the perilla extract and a functional component, wherein the perilla extract is a perilla root, stem or leaf extract; the functional component comprises a deep-sea seaweed extract; and the deep-sea alga extract comprises an austria seaweed extract, a light black seaweed extract or a fucus serratus extract. The perilla extract is applied to the cosmetic as the transdermal penetration enhancer, so that absorption of the functional component in the cosmetic can be significantly promoted, so that the functional component in the cosmetic can be relatively well absorbed by the skin; and relatively good efficacies of the skin for moisturizing, replenishing water and locking water are promoted.

The invention relates to a locking mechanism for a chassis battery of an electric passenger car, which comprises an electric lock combined device and a battery hanging combined device matched with the electric lock combined device, wherein a torque is output to the electric lock combined device by a motor and the electric lock combined device is driven by a worm gear, thereby realizing the releasing and the locking between a worm gear arc-shaped slot and a battery combined hook. With the help of the releasing and the locking of the mechanism, the battery hanging combined device assembled witha battery is used for fixing or separating the battery with or from the electric passenger car. The locking mechanism for the chassis battery of the electric passenger car has the advantages of high automation degree, high reliability, strong matching property and low demand on operation skills, and can be used for quickly fixing or separating the battery with or from the electric passenger car.

The invention discloses nano silver prepared through low-temperature reducing of reducing sugar, a preparing method of the nano silver and application of the nano silver to conductive ink. The preparing method comprises the steps that water is added in the reducing sugar and polyvinylpyrrolidone to prepare a solution A; a sodium hydroxide solution is added to silver nitrate to adjust PH to prepare a solution B; and the solution B is added in the solution A, and after the reaction is over, centrifugal scattering, ultrasonic oscillation cleaning, drying and grinding are conducted, and then nano silver powder is obtained. The nano silver powder is mixed with a connecting agent and an addition agent, and water-based UV conductive ink is obtained after ultrasonic scattering. The glucose can be adopted as a reducing agent, and very large beneficial effects are achieved in the aspects of safety, environment friendliness, sustainability and the like. The glucose is utilized for low-temperature reducing of the silver nitrate, and the defect of degeneration and carbonization of the glucose at the high temperature can be overcome. Ultrasonic waves are adopted for cleaning nano silver suspension liquid, residues of the reducing agent are avoided, the conductive performance of the prepared conductive ink is better, and the conductive ink can be well applied to many fields of RFID antenna printing and the like.

A safety sharing travel service scheme based on an alliance block chain comprises a trust mechanism, a roadside unit and users, and the users are composed of passengers and drivers. The passenger encrypts the travel data and the access structure to generate a ciphertext and sends the ciphertext to the roadside unit; the driver sends the travel attribute of the driver to the roadside unit; the roadside unit uses fog calculation to match a proper driver for a passenger, converts a ciphertext into a re-encrypted ciphertext and sends the re-encrypted ciphertext to the driver, the driver decrypts the re-encrypted ciphertext to obtain information and provides a shared travel service for the passenger, and after the shared travel service is finished, the roadside unit stores a ride sharing recordto a block chain for tracing responsibility in case of disputes. According to the method, the requirements of the shared travel service for safety and privacy are met, potential collusion attacks areeffectively resisted, the centralized structure of an existing shared travel service scheme is changed, and communication expenditure and calculation expenditure are reduced.

The invention relates to a serum-free medium of a human amniotic epithelial stem cell and a culture method thereof. The serum-free medium is formed by adding a human epidermal growth factor, human transferring, human insulin, sodium selenite, alanyl-L-glutamine dipeptide, alanine, asparaginate, aspartic acid, glutamic acid, glycine, proline and serine to a DMEM / F12 basic medium. The culture method comprises the steps of digesting 2.5g / L of trypsin for a human amniotic membrane, obtaining the human amniotic epithelial stem cell and filtering to prepare a single cell suspension; putting the human amniotic epithelial stem cell into a CO2 incubator of which the saturated humidity and the volume fraction are 5% at 37 DEG C through the serum-free medium under a serum-free condition and achieving growth and amplification of the amniotic epithelial stem cell through liquid exchange and subculture under the serum-free culture condition, the serum-free medium has the characteristics of stem cells, and is free of other animal sources, wide in source and free of ethical restriction.

A vehicle has a distance monitoring device (4,5), which can be switched between a first operating mode for detecting the distance (1) to an obstacle located in travelling direction and a second operating mode for measuring a distance (d) transversely to the travelling direction to an obstacle (12) and outputting a signal in real time that is representative of the measured distance (d).

The invention provides an antibacterial polysaccharide fiber and a preparation method thereof, and belongs to the field of polymer fibers. The preparation method comprises the following steps: firstly, adding a sodium periodate aqueous solution into a polysaccharide aqueous solution, carrying out oxidation stirring in a dark environment, and dialyzing and freeze-drying to obtain dialdehyde polysaccharide; uniformly stirring the dialdehyde polysaccharide with polyethylene oxide, a surfactant and a cosolvent to obtain a mixed solution, and then carrying out electrostatic spinning to obtain an electrospun fiber; and finally, soaking the electrospun polysaccharide fiber into an epsilon-polylysine solution for crosslinking reaction to obtain the antibacterial polysaccharide fiber material. Theantibacterial polysaccharide fiber material has excellent antibacterial performance and good biocompatibility.

An apparatus and method for rotating articles stored on a pallet without rotating the entire pallet. The turntable of the present invention is located on the pallet or integrated into the top surface of the pallet. By rotating the pallet within the rack, the articles thereon may be loaded and unloaded from a position directly in front of the picker.

The invention discloses a method for preparing enoxaparin sodium, comprising the steps of salinizing, drying, esterfying, alcohol precipitating, oxidizing, alcohol precipitating, fine filtering and freeze drying. In the method provided by the invention, a hydrophilic liquid phase reaction, a hydrophobic liquid phase reaction and a solid phase reaction are adopted, so that macromolecule sodium heparin is degraded into micromolecule sodium heparin with a specific structure, and the molecular weights of products and molecular weight distribution ranges are controlled, thus anti-FIIa activity resulting in bleeding risk is greatly reduced, the anti-FXa activity is relatively improved, and the product effectiveness and safety advantages are obvious. The enoxaparin sodium can be used for effectively preventing venous thromboembolism and pulmonary embolism, can be used for thrombosis before and after operations of orthopedic surgery and neurosurgery, and can be used for greatly reducing apoplexy risk, more effectively reducing death, cardiac failure and recurrent angina of patients suffering from unstable coronary artery syndromes, reducing hypertriglyceridemia and effectively eliminatingthe side effects of haemorrhage, osteoporosis and induced thrombocytopenia after long-term use of common unfractionated heparin sodium and derivates of common unfractionated heparin sodium.

The invention discloses a spindle transporting trolley arranged on a spindle transporting trolley track which is intersected with the traditional operator track. The spindle transporting trolley comprises a trolley body, a running device and a rotating mechanism, wherein the running mechanism is arranged at the bottom of the trolley body and used for driving the spindle transporting trolley to run on the spindle transporting trolley track; and the rotating mechanism is arranged on the trolley body and used for loading and rotationally positioning forged members. The spindle transporting trolley can greatly shorten the forging, pressing and feeding time to effectively improve the working efficiency of the whole forging and pressing machine equipment, is accurate to position, and can improve the forging and pressing quality.

The invention aims at providing an adjustable low-voltage bubble generator which comprises an alternate current to direction current power supply, a capacitor, a slide rheostat, current limit resistors, a protection resistor, alternate current contactors, a voltmeter, a charge switch, a discharge switch, a charge indicator, a discharge indicator and a power supply indicator, wherein an input terminal of the alternate current to direct current power supply is connected with an alternate current socket, the power supply indicator is connected in parallel with an input terminal of the alternate current to direct current power supply, an output terminal of the alternate current to direct current power supply is connected with the current limit resistor, the slide rheostat and another current limit resistor sequentially in series to form a closed loop circuit, the protection resistor, the capacitor and the first alternate current contactor are sequentially connected in series and then are connected with the slide rheostat in parallel to form the charge circuit, and the capacitor is connected with a discharge output terminal and the second alternate current contactor in series to form the discharge circuit. Compared with the prior bubble generator, the adjustable low-voltage bubble generator has the huge advantages on the aspects of operation, repeatability, safety, experimental period and experimental cost.

The invention discloses a positive electrode and electrolyte hybrid recycling method of a lithium battery. The positive electrode and electrolyte hybrid recycling method comprises the steps of mixingand dissolving a positive electrode material and an electrolyte of the battery in hot water according to a mass ratio being 1:1; performing low-temperature heating and stirring in a closed container to filter lithium fluoride precipitant; injecting a filtering liquid into a next-level saturated sodium carbonate solution to obtain a non-lithium metal carbonate precipitant; and performing smashing,sieving and separation on non-lithium metal after thermal treatment. Hydrofluoric acid is generated by hydrolysis of lithium hexafluorophosphate in the electrolyte to make the positive electrode material dissolved, the defects that the positive electrode material and the electrolyte of the battery are needed to be separately processed during recycling and an extra acid is added during the processing process to perform dissolving to brought a potential risk to an ecological environment and personnel safety are effectively overcome, the positive electrode material and the electrolyte are simultaneously recycled, no extra acid is added, the environmental pollution is reduced, moreover, closed operation during the reaction process is achieved, the safety is high, the process is simple, and continuous production is easy to implement.

A method of inducing bone formation in a subject in need of such inducement comprises the steps of mechanically inducing an increase in osteoblast activity in the subject and elevating blood concentration of at least one bone anabolic agent in the subject. The method steps may be performed in any order, but in sufficient time proximity that the elevated concentration of the anabolic agent and the mechanically induced increase in osteoblast activity overlaps. The method may additionally comprise providing the subject with an elevated blood concentration of at least one antiresorptive agent, wherein the elevated concentration is sufficient to prevent resorption of new bone growth produced due to the osteoblast activity. Use of the method permits targeting of specific bones of the subject for bone production and preservation, faster bone production and earlier discontinuation of bone anabolic pharmaceuticals. Kits adapted for performing the method are provided.

A full-jacket helical conveyor centrifuge including a rotatably disposed drum and a drive device for the drum. The drive device for the drum includes at least one electromechanical direct drive having secondary elements arranged on the outer periphery of the drum or on the outer periphery of a part non-rotatably connected with the drum. Primary elements are arranged radially outside the secondary elements at a distance from the secondary elements and without contact. A propulsion force is generated by an electromagnetic field of travelling waves.

A method of inducing bone formation in a subject in need of such inducement comprises the steps of mechanically inducing an increase in osteoblast activity in the subject and elevating blood concentration of at least one bone anabolic agent in the subject. The method steps may be performed in any order, but in sufficient time proximity that the elevated concentration of the anabolic agent and the mechanically induced increase in osteoblast activity overlaps. The method may additionally comprise providing the subject with an elevated blood concentration of at least one antiresorptive agent, wherein the elevated concentration is sufficient to prevent resorption of new bone growth produced due to the osteoblast activity. Use of the method permits targeting of specific bones of the subject for bone production and preservation, faster bone production and earlier discontinuation of bone anabolic pharmaceuticals. Kits adapted for performing the method are provided.

The invention discloses a personnel safety interlocking control system for a beam flow detection area. The personnel safety interlocking control system comprises a PLC system arranged in a control chamber; personnel safety interlocking detection equipment is installed at each area for personnel activities and connected with the PLC system; the personnel safety interlocking detection equipment comprises a site-clearing button, an access control system, dose detection equipment and an alarm lamp; the PLC system is connected with the site-clearing button, the access control system, the dose detection equipment and the alarm lamp separately. According to the personnel safety interlocking control system, the personnel safety interlocking detection equipment is installed at each area for personnel activities and connected with the PLC system, and therefore personnel are prevented from being in a dangerous environment; the personnel safety interlocking control system has the advantages of feasibility, safety, comprehensiveness and the like, safety interlocking is added in the beam flow detection area, and the hidden safety hazards of radiation influences on the personnel are solved.

The present invention discloses a piperazine (piperidine) cyclohexyl derivative and applications of the piperazine (piperidine) cyclohexyl derivative in treatment of neuropsychiatric diseases. According to the present invention, the pharmacological experiment results show that the piperazine (piperidine) cyclohexyl derivative provides high affinity with a dopamine D2 receptor, a dopamine D3 receptor, a serotonin 5-HT1A receptor and a serotonin 5-HT2A receptor, provides good D3 / D2 receptor selectivity and good 5-HT1A / 5-HT2A receptor selectivity, and provides low affinity with alpha receptor; the in vivo test results show that the preferred compound has characteristics of good anti-schizophrenia effect, good pharmacokinetic property, low side effect, low acute toxicity and high safety, and has the development value of being adopted as the novel efficient and low-toxic anti-neuropsychiatric disease; and the piperazine (piperidine) cyclohexyl derivative is a compound represented by the structural general formula (I), or a geometric isomer, an optical isomer, a salt, a hydrate or a solvate thereof. The formula (I) is defined in the specification.

An ink for inkjet comprising: a dye; and water and / or a water-miscible organic solvent, wherein the dye comprises a dye compound having at least one heterocyclic structure, and the ink further comprises, as an additive, at least one compound capable of chemically interacting with the dye compound.