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Shock-absorbing sole and shock-absorbing shoe
PendingCN111150173AImprove shock absorptionImprove buffering effectSolesEngineeringMechanical engineering
The invention discloses a shock-absorbing sole and a shock-absorbing shoe, which are characterized in that the shock-absorbing sole comprises an expansion flow component. According to the shock-absorbing shoe sole and the shock-absorbing shoe, due to the fact that the expansion flow component is arranged in the shoe sole, the shock-absorbing shoe sole and the shock-absorbing shoe have good shock absorption performance, more impact force can be absorbed in the movement process, discomfort or injuries possibly occurring in the movement process of a human body are effectively reduced, and the defect that an existing shock absorption shoe (sole) is poor in shock absorption effect is overcome.
Owner:厦门天策材料科技有限公司
Combined hybrid cross-linked dynamic polymer and application thereof
The invention discloses a combined hybrid cross-linked dynamic polymer, which contains at least one boron-containing dynamic covalent bond, at least one other dynamic covalent bond and an optional hydrogen bond, and contains at least one dynamic covalent cross-linked network, wherein the cross-linking degree of other dynamic covalent bond cross-linking reaches a gel point or above. By introducingthe boron-containing dynamic covalent bonds with different dynamics, other dynamic covalent bonds and optional hydrogen bonds into the combined hybrid cross-linked dynamic polymer, a dynamic polymer material with a wide controllable range, rich structures and various properties can be prepared. The dynamic polymer contains the difference between the boron-containing dynamic covalent bond, the other dynamic covalent bond and the hydrogen bond, so that the polymer can show dynamic reversible effects with orthogonality and synergism under different conditions, and therefore, the polymer shows good self-repairing characteristics and rich stimulus responsiveness. The dynamic polymer can be widely applied as a self-repairing material, a tough material, a sealing material, an interlayer adhesiveand the like.
Owner:厦门逍扬运动科技有限公司
System for identifying, positioning and supervising special article or personnel
InactiveCN101625776AAutomatic control tracking shootingStrong regulationCo-operative working arrangementsChecking apparatusRelevant informationHand held
The invention discloses a system for identifying, positioning and supervising a special article or personnel, comprising a system server, an RFID middle ware server, fixed RFID reading equipment, a hand-held RFID reading equipment, an RFID label, an audible and visual alarm and the like; the system server is used for storing relevant software and databases; the RFID middle ware server is used for processing the data acquired by the system; the fixed RFID reading equipment is fixedly arranged in a supervising area, internally provided with an RFID reading-writing device and used for acquiring RFID label information and sending the RFID label information to the RFID middle ware server; the hand-held RFID reading equipment is internally provided with an RFID reading-writing device and is used for acquiring RFID label information; the RFID label is internally provided with information of special article or personnel; and the audible and visual alarm is used for feeding back relevant information to relevant personnel in an audible and visual alarming way. The invention is systematized so that all the components are matched mutually and the spherical article or personnel is identified, positioned and supervised effectively.
Owner:深圳市比特威软件科技有限公司
Foaming polyurethane rubber compound particles capable of being sulfurized and crossly linked as well as preparation method and molding technology of foaming polyurethane rubber compound particles
ActiveCN107828205AIncrease the degree of cross-linkingControl the degree of cross-linkingPore distributionPelletizing
The invention discloses foaming polyurethane rubber compound particles capable of being sulfurized and crossly linked as well as a preparation method and a molding technology of the foaming polyurethane rubber compound particles. The foaming polyurethane rubber compound particles capable of being sulfurized and crossly linked are prepared from an unsaturated polyurethane rubber compound, a foamingnucleating agent, a foam pore size stabilizer and a melt viscosity regulator; all the components are melted, blended and granulated to prepare blended particles; then supercritical fluid is used as afoaming agent to carry out foaming; finally, the foaming particles with stable quality, uniform foam pore distribution, high foaming rate, low size shrinkage rate and beautiful surface can be obtained; meanwhile, the obtained foaming particles also can be further sulfurized to form an interpenetrating or semi-interpenetrating network structure; the cross linking degree of the foaming particles isregulated and controlled; the obtained foaming polyurethane rubber compound particles can be widely applied to fields including vibration absorption materials, packaging materials, child toys, sportsgoods, model airplanes, heat-preservation and heat-insulation materials, automobile interior materials and the like.
Owner:福建安达福新材料科技有限公司
Tert-butyl asymmetric alpha-diimine nickel complex for preparation of ultrahigh-molecular-weight polyethylene elastomers and preparation method and application of tert-butyl asymmetric alpha-diimine nickel complex
ActiveCN108794545AHigh catalytic activityLow costNickel organic compoundsBulk chemical productionElastomerPolyolefin
The invention provides a tert-butyl asymmetric alpha-diimine nickel complex and an intermediate, a preparation method and application thereof. The prepared nickel complex has a single catalytic activecenter, regulation of polymer molecular weight and branching degrees can be realized through changing of a ligand structure and polymerization conditions, and high catalytic activity, low cost, performance stability and the like are achieved. The preparation method is mild in condition, short in period and simple in operation condition. The nickel complex can be applied to catalysts for vinyl polymerization, the catalytic activity is up to 1.26*10<7>g mol<-1>(Ni) h<-1>, the weight-average molecular weight Mw of prepared polyethylene fluctuates in a range of 1.0-30.8*10<5>g mol<-1>, molecularweight distribution is in a range of 1.9-5.0, the remarkable performance of polyethylene molecular weight control is achieved, the nickel complex can be used for preparation of ultrahigh-molecular-weight polyethylene, and obtained polyethylene is high in branching degree and is potential polyolefin elastomer.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Nitryl asymmetric alpha-diimine nickel complex for preparation of ultrahigh-molecular-weight polyethylene and preparation method and application of nitryl asymmetric alpha-diimine nickel complex
ActiveCN108794544AHigh catalytic activityLow costNickel organic compoundsBulk chemical productionChemistryCoordination complex
The invention provides a nitryl asymmetric alpha-diimine nickel complex for preparation of ultrahigh-molecular-weight polyethylene and an intermediate, a preparation method and application of the nitryl asymmetric alpha-diimine nickel complex. The nickel complex has a single catalytic active center, regulation of polymer molecular weight and branching degrees can be realized through changing of aligand structure and polymerization conditions, and high catalytic activity, low cost, performance stability and the like are achieved. The preparation method is mild in condition, short in period andsimple in operation condition. The nickel complex can be applied to catalytic vinyl polymerization, the catalytic activity is up to 4.61*10<6>g mol<-1>(Ni) h<-1>, the weight-average molecular weightMw of prepared polyethylene fluctuates in a range of 8.2-32.8*10<5>g mol<-1>, molecular weight distribution is in a range of 1.8-2.8, the remarkable performance of polyethylene molecular weight control is achieved, and the nickel complex can be used for preparation of ultrahigh-molecular-weight polyethylene; obtained polyethylene is high in branching degree, the melt temperature Tm is in a range of 76.9-117.2 DEG C, and accordingly the polyethylene can be used as engineering plastic at a high environment temperature, and a promising industrial application potential is achieved.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Preparation method of compound photosynthetic bacterial fertilizer
InactiveCN104671854APromote growthPromote accumulationBio-organic fraction processingBacteriaBiotechnologyMixed culture
The invention provides a preparation method of a compound photosynthetic bacterial fertilizer, and particularly provides a preparation method of the compound photosynthetic bacterial fertilizer obtained after mixed culture of thiocapsa roseopersicina and rhodopseudomonas sphaeroides which are high in growth speed, high in thallus content and short in culture time. A thiocapsa roseopersicina strain of purple sulfur photosynthetic bacteria and a rhodopseudomonas sphaeroides strain of purple non-sulfur photosynthetic bacteria are subjected to culture steps such as seed activation culture, seed culture, illumination culture in an anaerobic fermentation tank and the like, and the compound photosynthetic bacterial fertilizer containing thiocapsa roseopersicina and rhodopseudomonas sphaeroides is obtained. The compound photosynthetic bacterial fertilizer can realize disease prevention, fertilization, medicinal residue degradation and soil remediation, takes effect fast and has a stable effect, and the use amount is small.
Owner:北京聚益成广科技有限公司
Digital rights management
ActiveUS20060143461A1Illegitimate use can be prevented efficientlyReduce the burden onUser identity/authority verificationPayment architectureComputer hardwareDigital content
A digital rights management is provided. In the digital rights management method and contents service method, a user terminal of the digital contents encodes the digital contents based on specific information of the terminal. When using the digital contents encoded based on the identification of the terminal, the digital contents are decoded using the identification of the corresponding terminal. A billing is performed with respect to the use of the digital contents encoded or decoded based on the identification of the terminal.
Owner:LG ELECTRONICS INC
Current-limiting diode
The invention belongs to the technical field of semiconductors, and relates to a current-limiting diode. The invention proposes the novel current-limiting diode, and the diode employs the technology of growing a charge restoration layer on a thin carrier AlGaN / GaN heterojunction to modulate two-dimensional electron gas. The structural advantages of the diode lie in that fluorine-based gas used for etching of the charge restoration layer can hardly cause any etching impact on a barrier layer below the charge restoration layer under the conditions that a device is enhanced and the diode has a lower start voltage and a large reverse withstand voltage, and finally can achieve the self-terminating at an AlGaN interface, so as to achieve the precise control of the barrier layer. The diode avoids the etching of the AlGaN layer, and cannot cause damages to the AlGaN layer, so the device is large in current density, is higher in electron mobility and is lower in conduction resistance.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Asymmetric diimine pyridine complex with nitro-enhanced thermal stability and catalytic activity as well as preparation method and application of asymmetric diimine pyridine complex
ActiveCN109988100AImprove performanceMolecular weight regulationIron group organic compounds without C-metal linkagesCobalt organic compoundsDiimineEngineering plastic
The invention provides a diphenylmethyl-containing asymmetric diimine pyridine complex with nitro-enhanced thermal stability and catalytic activity, and a preparation method and application thereof. The complex has a single catalytic activity center, the molecular weight of a polymer can be regulated and controlled by changing a ligand structure and polymerization conditions, and the complex has the advantages of high catalytic activity, low cost, stable performance and the like. The complex and intermediates thereof have the advantages of mild preparation conditions, short period, simple operation conditions and the like. The asymmetric complex can be applied to a catalyst for ethylene polymerization and has high catalytic activity, and high molecular weight (up to 599.5 kg / mol) linear polyethylene is obtained; especially, the provided iron complex is high in thermal stability, and even at a high temperature of 100 DEG C, the catalytic activity can still be kept at 3.86* 10<6> g*mol<-1>(Fe)*h<-1>. Compared with reported non-nitro substituents (CH3, Cl), the complex has the highest activity and molecular weight. Therefore, the complex can be used at a high environmental temperatureas engineering plastic, and has great industrial application potential.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Force-induced responsive hybrid cross-linked dynamic polymer
The invention discloses a force-induced responsive hybrid cross-linked dynamic polymer which is characterized by comprising at least one covalent cross-linked network, non-dynamic covalent bonds of atleast one covalent cross-linked network are covalently cross-linked above the gel point of the covalent cross-linked network, and at least one cross-linked network contains dynamic covalent cross-linking; wherein at least one force-sensitive group is contained; wherein at least one dynamic covalent bond is contained; wherein a supramolecular interaction is optionally contained. The polymer is endowed with certain strength and stability due to covalent cross-linking; due to dynamic covalent bonds, the polymer can show functional characteristics such as stimulus responsiveness, and has the effects of self-repairing, shape memory, toughening and the like on the material in a specific structure; the force-sensitive group can be chemically and / or physically changed under the action of mechanical force, so that the polymer realizes force-induced response. The dynamic polymer can be widely applied as a self-repairing material, a tough material, a sealing material, an adhesive and the like with force-induced response performance.
Owner:厦门天策材料科技有限公司
Pyridylimine group complex containing asymmetric fused rings and preparation method and application of pyridylimine group complex
ActiveCN110386954AMild reaction conditionsShort cycleIron group organic compounds without C-metal linkagesNickel organic compoundsKetoneThermal stability
The invention provides a pyridylimine group complex containing asymmetric fused rings and a preparation method and application of an intermediate of the pyridylimine group complex. The complex has high catalytic activity, can realize the regulation of the molecular weight of a polymer by changing a ligand structure and polymerization conditions, and has the advantages such as low cost and stable performance. The preparation method of the intermediate 2,3,7,8,9,10 hexahydro-1H-cycloheptaquinoline-4,6-dione compound and the complex has the advantages such as mild conditions, short cycle and simple operating conditions. The complex can be applied to a catalyst for ethylene polymerization, especially when an iron complex provided has high thermal stability, the catalytic activity can be as high as 15.86x10<6> g.mol<-1>(Fe)h<-1> under the action of a catalyst promoter MMAO, highly linear polyethylene is obtained, the catalytic activity can still be maintained at 5.44x10<6> g.mol<-1>(Fe)h<-1> even at a high temperature of 90 DEG C, the temperature is in line with the operating temperature of industrial production, and the pyridylimine group complex has good industrial application prospects.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Preparation method of ZnO (zinc oxide) nanometer-micrometer rod with parallelogram cross section
The invention provides a preparation method of ZnO (zinc oxide) nanometer-micrometer rod with a parallelogram cross section. The method comprises the following steps of: using a monocrystalline silicon piece with the surface covered by a Au film with the thickness of 10nm as a deposition substrate; uniformly mixing a certain amount of Zn power or ZnO powder, Sb2O3 powder and carbon powder at a certain mole ratio, putting the mixture used as a reaction source into a quartz boat, and reversely buckling the substrate deposited with the Au film on the raw materials; then putting the quartz boat at a position, close to a thermoelectric couple, on the center of the quartz tube of a tube furnace; before the reaction, removing air in the quartz tube by high-purity nitrogen, rising the furnace temperature to 950-1100 DEG C in the presence of nitrogen, and reacting for 20-60 minutes, wherein when the reaction is performed, the nitrogen gas flow is 3-5L / h and the oxygen gas flow is 0.1-0.5L / h; when the reaction is finished, and naturally cooling the furnace temperature to the room temperature to obtain the ZnO nanometer-micrometer rod with the parallelogram cross section. The preparation method has the characteristics that the process is simple, the product repeatability is good, the crystal quality is high, and the feature size is controllable. The ZnO nanometer / micrometer rod has the function of excellent regulation on optical field and can be used for a similar waveguide Fabry-Perot optical microcavity.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Preparation method of precise casting wax mold repair wax
InactiveCN108788010AHigh hardnessStrong regulationFoundry moulding apparatusWaxVolumetric Mass Density
The invention discloses a preparation method of precise casting wax mold repair wax. The preparation method comprises the following steps that a, firstly, selected raw materials are processed; b, auxiliary materials are prepared after the step a is finished; c, after the step b is completed, and then heating and fusing are carried out by utilizing a stirrer; d, after the step c is finished, the preparation of the repair wax is carried out; and e, after the step d is completed, finally the repair wax is collected. According to the preparation method, in the process of manufacturing the repair wax, the auxiliary materials are added on the conventional raw materials, white vaseline, rosin, petrochemical engineering resin and stearic acid in the auxiliary materials are utilized, the overall hardness of the repair wax can be increased according to the proportioned proportion, and the adjusting degree is higher, and therefore, different repairing requirements can be met, and the production cost can be effectively controlled; and cooling equipment can be provided for gradually cooling when mechanical fusion is carried out, so that the formation of internal air holes is avoided on the premise that the adhesion performance is improved, the forming speed and the overall density are increased, and popularization and use are facilitated.
Owner:山东景阳岗金属设备有限公司
Diaryliminopyridyl complex containing flexible eight-membered ring, preparation method and application thereof
ActiveCN109897068AMolecular weight regulationHigh catalytic activityGroup 8/9/10/18 element organic compoundsArylPolymer science
The invention provides a preparation method and application of a diaryliminopyridyl complex containing flexible eight-membered ring and an intermediate thereof. The complex has multiple catalytic active centers, can achieve regulation of the polymer molecular weight by changing the ligand structure and polymerization conditions, and has the advantages of high catalytic activity, low cost, stable performance and the like. The preparation method of the intermediate alpha, alpha'-dioxo-2, 3:5, 6-bis(hexamethylene)pyridine compound and the complex has the advantages of mild conditions, short cycle, simple operation conditions, etc. The complex can be applied in catalysts for ethylene polymerization, especially the provided iron complex has high thermal stability, and under the action of a cocatalyst, the catalytic activity can reach 12.23*10<6>g.mol<-1>(Fe)h<-1>, and highly linear polyethylene with high molecular weight (188kg.mol<-1>) can be obtained, even at a high temperature of 90DEG C, the catalytic activity can still be maintained at 6.75*10<6>g.mol<-1>(Fe)h<-1>, meeting the operating temperature of industrial production, the complex has very good industrial application prospects.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Optometry suitable for myopia of children and teenagers
InactiveCN113288576AStrong regulationGood clear visionEye exercisersEye treatmentChild and adolescentEyewear
The invention discloses an optometry method suitable for myopia of children and teenagers. The method is to solve the problem that the existing optometry cannot achieve sufficient myopia degree, foot correction and clear retina imaging, and also cannot enable the glasses of children to be worn accurately and comfortably. The method comprises: 1, carrying out inquiry; 2, carrying out computer optometry, comprehensive optometry, trial optometry, adjustment training, computer optometry and trial optometry; 3, carrying out distant vision optometry and trial lens by using a comprehensive optometry unit after mydriasis; and 4, preparing a prescription: preparing glasses, and using the compound topicamide eye drops for patients with eye regulation tension in mydriasis. Adjustment training is added in the invention, so that sufficient myopia degree, foot correction and clear retina imaging are really realized, meanwhile, the glasses of children can be accurately and comfortably worn, the problem of dizziness and inadaptability is avoided, and obstacles are cleared for foot correction glasses matching; and, in addition, the problem of valuing before and after mydriasis is changed, and the diopter before mydriasis is adopted, so that foot correction optometry is really realized. The method is suitable for myopia optometry of children and teenagers.
Owner:赵国良
Symmetrical seven-membered imino pyridine complex containing large steric hindrance substituent groups for preparing polyethylene wax, and preparation method and application of symmetrical seven-membered imino pyridine complex
ActiveCN110407886AHigh catalytic activityLow costIron organic compoundsCobalt organic compoundsWaxThermal stability
The invention provides a symmetrical seven-membered imino pyridine transition metal complex containing large steric hindrance substituent groups for preparing food-grade polyethylene wax, and a preparation method and application of the symmetrical seven-membered imino pyridine transition metal complex. The preparation method of the complex is mild in condition, short in cycle and easy to operate.The complex can be applied to a catalyst for ethylene polymerization, the catalytic activity center of the complex is single, the polymer molecular weight can be adjusted and controlled by changing aligand structure and polymerization conditions, and the complex has the advantages of low cost, high catalytic activity, good thermal stability and the like. Particularly, as for the provided iron complex, the maximum catalytic activity can reach 27.41*10<6> g.mol<-1>(Fe).h<-1>, even at 100 DEG C, 16.61*10<6> g.mol<-1>(Fe).h<-1> can be still kept, the operating temperature for industrial production is met, and great industrial application potential is achieved; and the obtained minimum polyethylene weight-average molecular weight Mw can reach 0.85 kg.mol<-1>, and the complex can be used for preparing the polyethylene wax in urgent need commercially, especially the food-grade wax, and has wide application prospects.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Seven-membered cyclopyridylimine complex containing large-steric-hindrance cycloalkane and preparation method and application of seven-membered cyclopyridylimine complex
ActiveCN110386953AHigh catalytic activityMolecular weight regulationIron group organic compounds without C-metal linkagesNickel organic compoundsFine structureSingle Center
The invention provides a novel symmetrical seven-membered cyclopyridylimine metal complex containing a cycloalkane large-steric-hindrance substituent, a preparation method of the novel symmetrical seven-membered cyclopyridylimine metal complex and application to ethylene polymerization. A novel cycloalkane large-steric-hindrance structure enables the catalytic activity of the alpha,alpha'-dioxo-2,3:5,6-bis(pentamethylene)pyridine metal complex to be up to 10<7> g.mol<-1>.h<-1>, and the properties, especially thermal stability, are better. The catalytic active site of the complex provided is not limited to a single center, but the molecular weight of a polymer can still be regulated by changing the ligand structure and polymerization conditions. The complex provided can be used for catalyzing the ethylene polymerization together with a cocatalyst methylaluminoxane and modified methylaluminoxane to obtain highly linear polyethylene with high molecular weight (M<w> up to 272.0 kg.mol<-1>), and the shortcoming of low-molecular-weight polyethylene obtained by a previous catalyst is greatly overcome; and meanwhile, the linear polyethylene of different fine structures can be realized by regulating the temperature, and therefore, great industrial application value is achieved.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Preparation method of zinc oxide nanorods with parallelogram cross section
ActiveCN102910668BAchieving controllable synthesisStrong regulationZinc oxides/hydroxidesDecorative surface effectsNitrogen gasOptical microcavity
The invention provides a preparation method of ZnO (zinc oxide) nanometer-micrometer rod with a parallelogram cross section. The method comprises the following steps of: using a monocrystalline silicon piece with the surface covered by a Au film with the thickness of 10nm as a deposition substrate; uniformly mixing a certain amount of Zn power or ZnO powder, Sb2O3 powder and carbon powder at a certain mole ratio, putting the mixture used as a reaction source into a quartz boat, and reversely buckling the substrate deposited with the Au film on the raw materials; then putting the quartz boat at a position, close to a thermoelectric couple, on the center of the quartz tube of a tube furnace; before the reaction, removing air in the quartz tube by high-purity nitrogen, rising the furnace temperature to 950-1100 DEG C in the presence of nitrogen, and reacting for 20-60 minutes, wherein when the reaction is performed, the nitrogen gas flow is 3-5L / h and the oxygen gas flow is 0.1-0.5L / h; when the reaction is finished, and naturally cooling the furnace temperature to the room temperature to obtain the ZnO nanometer-micrometer rod with the parallelogram cross section. The preparation method has the characteristics that the process is simple, the product repeatability is good, the crystal quality is high, and the feature size is controllable. The ZnO nanometer / micrometer rod has the function of excellent regulation on optical field and can be used for a similar waveguide Fabry-Perot optical microcavity.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Method for ecological conservation of tobacco planting soil under intercropping mode of tobaccos and potatoes
InactiveCN109892189AStrong temperature and humidityReduce water evaporationTobacco cultivationRoot crop cultivationContinuous croppingDisease
The invention relates to the technical field of tobacco planting soil ecological conservation, in particular to a method for ecological conservation of tobacco planting soil under an intercropping mode of tobaccos and potatoes. The method comprises the following steps of (1) selecting an intercropping sweet potato variety; (2) ridging; (3) fertilizing; (4) transplanting tobacco seedlings; (5) conducting sweet potato field planting; (6) conducting sweet potato harvesting; the method can improve a soil physical structure, promote beneficial microbial activities, reduce the number of harmful organisms in the soil, effectively improve the ecological environment of the tobacco planting soil, eliminate obstacles of continuous cropping, reduce the occurrence of soil-borne diseases, and achieve the reduction of labor and increase of efficiency for tobacco farmers.
Owner:湖北省烟草公司恩施州公司
A near-field bolometric tuner based on DC voltage biased graphene
ActiveCN112268477BEnhanced near-field thermal radiationExcellent near-field thermal radiation modulation capabilityIndirect heat exchangersOptical elementsDc currentMagneto
Owner:HARBIN INST OF TECH
Force-induced responsive cross-linked polymer
PendingCN111378180AStrong regulationResponsiveness rich and diversePolymer scienceCrosslinked polymers
The invention discloses a force-induced responsive cross-linked polymer, which contains at least two force-sensitive groups and has only one cross-linked network with the cross-linking degree being above a gel point. According to the cross-linked polymer, at least two force-sensitive groups contained in one cross-linked network are reasonably combined, so that a wide variety of force-induced responsiveness can be simply and efficiently obtained.
Owner:厦门天策材料科技有限公司
Live broadcast information processing method and system based on block chain network
PendingCN111639136AFully documentedAvoid mutual influenceEncryption apparatus with shift registers/memoriesDatabase distribution/replicationInformation processingEngineering
According to the live broadcast information processing method and system based on the block chain network provided by the invention, when the live broadcast information processing method and system are used, in the live broadcast process of a live broadcaster, behavior actions of the live broadcaster are independently collected, all action frames are recorded, and then the action frames are deleted and compressed, so that the storage space is saved; then, constructing a block chain of an action frame, and storing data of the action frame into each node in a distributed manner; distributed storage of the block chain is used; storing the action frame of the live broadcaster and the compression moment of the action frame in each node in a block chain manner in a distributed manner; accordingto the method, the action frames of the live broadcaster can be prevented from being tampered, the behavior actions of the live broadcaster can be strongly supervised and cannot be retained in the block chain in a tampered manner, and when the live broadcaster needs to be investigated in future, the action frame data can be used as reliable and credible evidences.
Owner:陈议尊
a current limiting diode
The invention belongs to the technical field of semiconductors, and relates to a current limiting diode. The invention proposes a new type of current-limiting diode, which uses the technology of growing a charge recovery layer on a thin barrier AlGaN / GaN heterojunction to modulate two-dimensional electron gas. Under the premise of withstand voltage, the advantage of this structure is that the fluorine-based gas used in the etching of the charge recovery layer will hardly cause any etching effect on the barrier layer under the charge recovery layer, and finally self-termination can be realized at the AlGaN interface to achieve the opposite effect. The purpose of precise control of the barrier layer. The invention avoids etching the AlGaN layer and does not cause damage to the AlGaN layer, so the device has larger current density, higher electron mobility and lower on-resistance.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Chromium pyridinediimide complexes, methods for their preparation and use for the preparation of polyolefins
ActiveCN112851711BHigh reactivityImprove thermal stabilityOrganic chemistry methodsBulk chemical productionPolymer sciencePolyolefin
The application discloses a class of highly thermally stable diimine pyridine ligand compounds and chromium complexes that can be used to prepare saturated linear polyethylene. This type of complex contains electron-withdrawing substituent and bulky substituent benzhydryl, has a single catalytic active center, has high catalytic activity, and the molecular weight distribution of the obtained catalytic product is narrow and evenly distributed. In addition, the catalytic system also has the advantages of high thermal stability and low cost, and has broad application prospects. Also disclosed are the preparation method of the ligand compound and its chromium complex, and the use of the chromium complex for catalyzing olefin polymerization, especially ethylene polymerization.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Adjusting combined type building pile for urban construction
InactiveCN114457793AEffective combination installationReasonable structureBulkheads/pilesArchitectural engineeringStructural engineering
The invention discloses an adjustable combined building pile for urban construction, which comprises a pile body and a pile tip, the pile tip is integrally formed, a convex ring is integrally formed in the middle of the outer wall of the pile tip, / the pile body comprises a left pile body and a right pile body, and semicircular grooves are formed in the centers of the left pile body and the right pile body; a plurality of protruding blocks are integrally formed on the side edges of the left pile body and the right pile body, vertical through holes are formed in the protruding blocks, a positioning protruding column is integrally formed on the top face of a protruding ring, a limiting clamping groove is formed in the middle of the side face of each protruding block, a connecting pile body is further arranged, and a plurality of protruding plates are integrally formed on the symmetrical outer walls of the connecting column. A guide vertical hole matched with the vertical through hole is formed in the protruding plate, and the connecting cylinder is inserted into an inner cavity formed by the left pile body and the right pile body. The connecting pile is reasonable in structural arrangement, the pile tip and the pile body can be effectively combined and installed, the height of the connecting pile body can be adjusted according to the fact that the protruding plates are clamped into the limiting clamping grooves of the protruding blocks at different positions, and the connecting pile is high in applicability and good in practicability.
Owner:卢衍忠
A method for automatic control of thermoelectric load
ActiveCN111396157BThe adjustment process is safe and reliableIncrease the level of automationSteam engine plantsSafety/regulatory devicesAutomatic controlThermodynamics
Owner:SHANXI UNIV
A kind of α-imine iron/cobalt complex catalyst and its preparation and use
ActiveCN111171190BHigh catalytic activityImprove catalytic selectivityIron group organic compounds without C-metal linkagesCobalt organic compoundsPolymer sciencePolyolefin
The invention discloses an α-imine iron / cobalt complex catalyst, its preparation and application, and belongs to the technical field of polyolefin catalysts. The present invention utilizes a specific α-imine ligand and iron or cobalt center metal to construct a complex catalyst. This type of complex catalyst has a single catalytic active center, and can adjust the molecular weight of the polymer and its microscopic molecular structure by adjusting the structure of the ligand and the polymerization conditions. It has the advantages of high catalytic activity, low cost, and stable performance. , has great application prospects in industrial production.
Owner:JIANGNAN UNIV
Complexes containing asymmetric fused ring pyridine imine groups and their preparation methods and applications
ActiveCN110386954BMild reaction conditionsShort cycleIron group organic compounds without C-metal linkagesNickel organic compoundsPolymer sciencePtru catalyst
The invention provides a pyridylimine group complex containing asymmetric fused rings and a preparation method and application of an intermediate of the pyridylimine group complex. The complex has high catalytic activity, can realize the regulation of the molecular weight of a polymer by changing a ligand structure and polymerization conditions, and has the advantages such as low cost and stable performance. The preparation method of the intermediate 2,3,7,8,9,10 hexahydro-1H-cycloheptaquinoline-4,6-dione compound and the complex has the advantages such as mild conditions, short cycle and simple operating conditions. The complex can be applied to a catalyst for ethylene polymerization, especially when an iron complex provided has high thermal stability, the catalytic activity can be as high as 15.86x10<6> g.mol<-1>(Fe)h<-1> under the action of a catalyst promoter MMAO, highly linear polyethylene is obtained, the catalytic activity can still be maintained at 5.44x10<6> g.mol<-1>(Fe)h<-1> even at a high temperature of 90 DEG C, the temperature is in line with the operating temperature of industrial production, and the pyridylimine group complex has good industrial application prospects.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Nitro-containing asymmetric α-diimine nickel complex for preparing ultra-high molecular weight polyethylene, intermediate, preparation method and use
ActiveCN108794544BHigh catalytic activityLow costNickel organic compoundsBulk chemical productionPolymer scienceDiimine
The invention provides a nitryl asymmetric alpha-diimine nickel complex for preparation of ultrahigh-molecular-weight polyethylene and an intermediate, a preparation method and application of the nitryl asymmetric alpha-diimine nickel complex. The nickel complex has a single catalytic active center, regulation of polymer molecular weight and branching degrees can be realized through changing of aligand structure and polymerization conditions, and high catalytic activity, low cost, performance stability and the like are achieved. The preparation method is mild in condition, short in period andsimple in operation condition. The nickel complex can be applied to catalytic vinyl polymerization, the catalytic activity is up to 4.61*10<6>g mol<-1>(Ni) h<-1>, the weight-average molecular weightMw of prepared polyethylene fluctuates in a range of 8.2-32.8*10<5>g mol<-1>, molecular weight distribution is in a range of 1.8-2.8, the remarkable performance of polyethylene molecular weight control is achieved, and the nickel complex can be used for preparation of ultrahigh-molecular-weight polyethylene; obtained polyethylene is high in branching degree, the melt temperature Tm is in a range of 76.9-117.2 DEG C, and accordingly the polyethylene can be used as engineering plastic at a high environment temperature, and a promising industrial application potential is achieved.
Owner:INST OF CHEM CHINESE ACAD OF SCI
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