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57results about How to "Efficient production capacity" patented technology
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Chelating compound, and method of use of, poly(2-octadecyl-butanedioate) and the corresponding acid, poly(2-octadecyl-butanedioic acid)
ActiveUS20090139929A1Improve adsorption capacityEfficient production capacitySemi-permeable membranesWater contaminantsButanedioic acidPolymer science
A Chelating agent comprising a polymer backbone. The polymer backbone has a plurality of carbon atoms. There are two carboxylate groups or carboxylic acid groups per repeating unit being coupled to separate carbon atoms of the backbone.
Owner:PERIODIC PROD
Polycarbonate resin, Poly (2-Octadecyl-Butanedioic Acid) and the salts and esters thereof
ActiveUS20100311938A1Improve adsorption capacityEfficient production capacityWater contaminantsComplex ion-exchangersButanedioic acidPolymer science
Owner:LAURINO JOSEPH P
Automatic hydrogen supply integrated control system
The invention discloses an automatic hydrogen supply integrated control system which comprises a hydrogen producer, a primary purification device, a buffer tank, a secondary purification device, a hydrogen compressor, a bus-bar steel bottle group and a decompression current stabilizer, wherein the hydrogen generated by the hydrogen producer enters the buffer tank through the primary purification device, and is output through the secondary purification device; the redundant hydrogen generated by the hydrogen producer enters the hydrogen compressor through the primary purification device, and the hydrogen compressed by the hydrogen compressor is stored in the bus-bar steel bottle group; and the hydrogen stored in the bus-bar steel bottle group is decompressed by the decompression current stabilizer, and the decompressed hydrogen enters the buffer tank and is output through the secondary purification device. According to the automatic hydrogen supply integrated control system, the automatic switch between two hydrogen supply approaches, namely, the hydrogen producer terminal and the bus-bar steel bottle group, is achieved, and the stability of hydrogen supply pressure and flow is guaranteed while the cost of hydrogen production is reduced.
Owner:NANJING GUOSHENG ELECTRONICS
Shortened production equipment and method of coal-based direct reduced iron
ActiveCN102758046AEfficient production capacitySolve the troubleFluidised-bed furnacesBiochemical engineeringShaft furnace
The invention discloses shortened production equipment and a method of coal-based direct reduced iron. The equipment comprises production equipment used for preparing an oxidized pellet by a grate rotary kiln and is characterized in that the diameter of a kiln head of a rotary kiln is increased by 30-35%; a reducing agent using coal as base is jetted into the rotary kiln by using a spray gun; the reducing agent and the oxidized pellet are sufficiently mixed, and enter two reducing furnaces, which are approximately shaft furnaces, through a sealed tank and conveying equipment in sequence to be reduced in the reducing furnaces for 15-18 hours, so that a metalized pellet is manufactured; and the production equipment is also provided with a coal gas recycling system, a cooling device before the oxidized pellet is discharged out of the furnaces, and the like. Through the adoption of the equipment disclosed by the invention, the iron direct reducing process is obviously shortened; and as the coal is mainly used in the reducing agent and coal gas generated in the production can be recycled, the domestic coal resource superiority is brought into full play and energy can be also be greatly saved.
Owner:辽宁博联特冶金科技有限公司
Method for measuring diameter of high-temperature steel pipe by using image recognition technology
The invention discloses a method for measuring the diameter of a high-temperature steel pipe by using an image recognition technology. The method comprises the following steps of: placing a metric scale on the same plane where the steel pipe is located, carrying out image pick-up on the steel pipe by adopting a high-definition camera, obtaining a pixel point ratio of the metric scale to the steel pipe after the image processing carried out by a computer, obtaining the diameter of the steel pipe, and finally calculating to obtain the accurate diameter of the cooled steel pipe by using the scaling coefficient of the cooled steel pipe. The method for measuring the diameter of the high-temperature steel pipe by using the image recognition technology has the characteristics that: the cost is saved and the efficiency is increased.
Owner:TAIYUAN UNIV OF TECH
Hot press molded melamine foam prepared by hot press molding and preparation method thereof
The present invention discloses a hot press molded melamine foam, and the melamine foam comprises, by weight, 100 parts of melamine resin, 1-10 parts of a surfactant, 5-40 parts of a foaming agent, 0-20 parts of an assistant, 5-20 parts of a catalyst, 0-30 parts of water, and 5-30 parts of hot pressing rubber powder particles. The invention also discloses a preparation method for the hot press molded melamine foam, and the method includes following steps: preparation of the melamine resin; preparation of a semi-finished product of the melamine foam: mixing raw materials uniformly to form a foaming solution, and subjecting the foaming solution to microwave action to obtain the semi-finished product; and preparation of a melamine foam finished product: spraying a liquid formed by dispersion of the hot pressing rubber powder particles during the moving of the semi-finished product of the melamine foam, and press-forming the dried foam by a thermo-compressor to obtain the melamine foam finished product. Reticular layer structures of the melamine foam are adhered together through melting of the hot pressing rubber powder particles in the method, and the melamine foam has good mechanical properties and flame retardance, and does not increase the formaldehyde content. The method is capable of continuous production.
Owner:成都玉龙超聚新材料有限公司
Yellowing process of viscose production
The invention provides a yellowing process of viscose production. The process comprises the following steps: (A) after yellowing reaction is ended, adding primary dissolution alkali and secondary dissolution alkali into a yellowing machine successively, and adding primary dissolution water while adding secondary dissolution alkali; (B) opening a discharging valve to enable cellulose sulfonate in the yellowing machine to flow to a grinding machine from a discharging pipeline, and adding secondary dissolution water into the discharging pipeline while opening the discharging valve; (C) when the discharging rate is more than 90%, adding flushing alkali into the yellowing machine, and fully discharging, namely ending a yellowing cycle. According to the process, the dissolution water is added while the dissolution alkali is added, so that the time for separately adding the dissolution water is saved and the purposes of shortening the production cycle of the yellowing machine, increasing the production capacity of the yellowing machine, improving the operating stability of equipment and reducing the current consumption of the equipment and the energy consumption are achieved.
Owner:CHENGDU GRACE FIBER +1
Recombinant yeast strain and application thereof
InactiveCN106893684AGood yieldEfficient production capacityFungiMicroorganism based processesBiotechnologyYeast
The invention relates to the technical field of genetic engineering and discloses a recombinant yeast strain and application thereof. The recombinant yeast strain is a yeast strain for fermenting production of lycopene, and the ALD6 promoter expression intensity of the yeast strain is lowered. According to the recombinant yeast strain and the application thereof, the ALD6 promoter of the yeast strain is deeply studied, it is discovered that the lycopene yield of the yeast strain can be improved remarkably by constructing the recombinant yeast strain for fermentation production of the lycopene in the mode that the ALD6 promoter expression intensity is lowered through full knockout, lower expression promoter replacement or the like, the recombinant yeast strain can be taken as an optimizing means for a yeast engineering bacterium synthesis route, and recombinant yeast strains with more excellentproductioncapacity can be constructed.
Owner:TIANJIN UNIV
Hydrogen storage and release system and method for organic liquid hydrogen storage medium and industrial crude hydrogen source
PendingCN112093775AAchieve purificationFix security issuesHydrogen separationOrganic liquidsDehydrogenation
The invention discloses a hydrogen storage and release system and method for an organic liquid hydrogen storage medium and an industrial crude hydrogen source, and belongs to the technical field of organic liquid hydrogen storage. The system comprises a first gas purification device, a gas compression device, an organic liquid hydrogen storage medium hydrogenation device, an organic liquid hydrogen storage medium storage tank, a hydrogen-rich hydrogen storage medium storage tank, a hydrogen-rich hydrogen storage medium dehydrogenation device and a second gas purification device, an industrialcrude hydrogen source is introduced into the first gas purification device, is purified, then introduced into the gas compression device and is compressed, the compressed hydrogen source enters the organic liquid hydrogen storage medium hydrogenation device, is subjected to catalytic hydrogenation, is fed into a hydrogen-rich hydrogen storage medium storage tank, then is fed into the hydrogen-richhydrogen storage medium dehydrogenation device, and is subjected to dehydrogenation, and hydrogen obtained after passing through the hydrogen-rich hydrogen storage medium dehydrogenation device enters the second gas purification device and is purified again to obtain high-purity hydrogen. The high-purity hydrogen is obtained, and meanwhile, the problems of purification of an industrial crude hydrogen source and safe storage and transportation of hydrogen can be effectively solved.
Owner:陕西氢易能源科技有限公司
Yellowing system for viscose fiber production
Owner:CHENGDU GRACE FIBER +1
Diversified fiber yarn production method by rotor spinning
InactiveCN102534881AImprove qualityEfficient production capacityContinuous wound-up machinesOpen-end spinning machinesYarnSingle fiber
The invention relates to a diversified fiber yarn production method by rotor spinning, which includes the following process steps: the bulk fiber dyeing step, the wool mixing step, the combing step, the drawing step, the rotor spinning step, the doubling step and the twisting step. In the rotor spinning step, fiber strips are conveyed to a combing roll through a feeding mechanism and are combed into single fibrous fiber flow under the action of the combing roll, the single fiber flow is separated from the combing roll and enters a spinning rotor under the action of centrifugal force and negative pressure of the combing roll, and enters a U-shaped concentrating groove under the action of the centrifugal force after entering the spinning rotor, so that single fibers can be reconcentrated to be in the shape of rings and form yarns under the action of seed yarns and a twister. The diversified fiber yarn production method by rotor spinning is superior to the ring spinning method in yarn quality, production capacity, energy consumption, labor using and benefits and the like.
Owner:江阴市振新毛纺有限公司
Chelating compound and the corresponding acid
ActiveUS8420757B1Easy and efficient to manufactureEasy to copySemi-permeable membranesWater contaminantsPolymer scienceBackbone chain
A polymer comprising a polymer backbone. The polymer backbone has a plurality of carbon atoms. There are two lipophobic carboxylate groups or carboxylic acid groups per repeating unit being coupled to separate carbon atoms of the backbone. The polymer may be used to recover metals by chelation and then burning away the polymer.
Owner:PERIODIC PROD
Three-dimensional zoned collaborative caving mining method for pillar groups
InactiveCN102359377AAvalanche efficientAvoid destructionUnderground miningBlastingEngineeringStoping
The invention discloses a three-dimensional zoned collaborative caving mining method for pillar groups. The method comprises that: taking stability significantly correlated pillar groups in a large and empty environment as a collaborative caving unit, conducting zoning within a three-dimensional solid of the collaborative caving unit, with each zone as a blasting zone with an independent free surface and a compensation space; carrying out blasting for one time to all zones within the caving unit through short-delay blasting or simultaneous blasting between zones to realize collaborative caving; making the blasting directions of all zones form mutual extrusion, with a continuous or discontinuous blasting initiation sequence in space among zones; leaving the blasting initiation sequences and blasting directions of blast holes within different zones mutually uncorrelated. The method of the invention is suitable for collaborative stoping of a plurality of pillars and treatment of multiple empty zones in a big and empty zone environment. The method provided in the invention completes empty zone treatment and pillar stoping in one step, thus providing a safe, efficient, productive and low-cost solution to underground mining of pillar groups in a big and empty zone environment.
Owner:CHINA MINMETALS CHANGSHA MINING RES INST
Double-light-beam exposure system and method for manufacturing photonic crystal mask layer
InactiveCN102707584ASimple structureLow priceMirrorsPhotomechanical exposure apparatusPhotonic crystalBeam splitting
The invention discloses a double-light-beam exposure system for manufacturing a photonic crystal mask layer. The double-light-beam exposure system comprises a laser light source, a beam expansion collimation system, a beam splitting and light gathering device and two rotary wafer clamps, wherein the beam splitting and light gathering device comprises a first beam splitting and light gathering prism, a second beam splitting and light gathering prism and two reflectors; the laser light source, the beam expansion collimation system and the first beam splitting and light gathering prism are sequentially arranged from front to back; the two reflectors are respectively positioned on the back and the side face of the first beam splitting and light gathering prism; positions where the first beam splitting and light gathering prism, the second beam splitting and light gathering prism and the two reflectors are positioned form a parallelogram; the two rotary wafer clamps are respectively positioned on the back and the side face of the second beam splitting and light gathering prism; and an electric shutter is arranged between the laser light source and the beam expansion collimation system or between the beam expansion collimation system and the first beam splitting and light gathering prism. The invention also discloses a double-light-beam exposure method for manufacturing the photonic crystal mask layer. The double-light-beam exposure system is simple in structure, low in cost and easy to implement.
Owner:HANGZHOU SILAN AZURE
Device for automatically controlling cutting, polishing and processing of products
PendingCN111618599AReduce security risksImprove work efficiencyOther manufacturing equipments/toolsAutomatic controlProduct processing
Disclosed in the present invention is a device for automatically controlling cutting, polishing and processing of products in the technical field of product processing, comprising a processing table.A positioning mechanism is provided on the right side of the top surface of the processing table; a first cutting mechanism is provided on the left side of the positioning mechanism; the first cuttingmechanism is linked and connected to a second cutting mechanism; a polishing mechanism is provided between the first mechanism and the second mechanism; a first cleaning mechanism is provided at theend portion of the polishing mechanism; and a second cleaning mechanism is provided under the processing table. The present invention implements automatic control of processing in the whole process, implements the positioning, cutting and polishing procedures for the products, integrates each independent processing device, reduces the floor area of the device, uses a cylinder and cutter synchronous conveying device to improve the capacity, reduces the labor invested cost, reduces the safety risk of manual operation, and improves the work efficiency.
Owner:SUZHOU IND PARK JIAXIN TECH CO LTD
Promoter and recombinant yeast strain
ActiveCN106893726AIncrease productionEfficient production capacityFungiMicroorganism based processesGenetic engineeringYeast strain
The invention relates to the technical field of genetic engineering and discloses a promoter and a recombinant yeast strain. Based on an overall-length sequence of a yeast strain ALD6 promoter, the promoter is processed as follows for one or more: 1, one or more conserved sequences on the ALD6 promoter are knocked out; 2, one or more sequences including the conserved sequences on the ALD6 promoter are knocked out; 3, one or more conserved sequences on the ALD6 promoter are mutated; 4, one or more conserved sequences on the ALD6 promoter are replaced; 5, one or more sequences including the conserved sequences on the ALD6 promoter are replaced. It is found that the yield of a yeast strain for terpenoid compound production can be increased through deficiency, replacement, mutation and the like of the conserved sequences of the promoter through deep research on the yeast strain ALD6 promoter, and the yeast strain ALD6 promoter can serve as an optimizing means of a yeast engineering bacterium synthesis path to establish the recombinant yeast strain having more excellent capacity.
Owner:TIANJIN UNIV
Industrial crude hydrogen purification and hydrogen storage and release system and method based on organic liquid hydrogen storage medium
PendingCN112028018AReduce complexityEfficient production capacityHydrogen separation using liquid contactHydrogen/synthetic gas productionOrganic liquidsDehydrogenation
The invention discloses an industrial crude hydrogen purification and hydrogen storage and release system and method for an organic liquid hydrogen storage medium, and belongs to the technical field of organic liquid hydrogen storage. The system comprises a gas compression device, an organic liquid hydrogen storage medium hydrogenation device, an organic liquid hydrogen storage medium storage tank, a hydrogen-rich hydrogen storage medium dehydrogenation device and a hydrogen-rich hydrogen storage medium storage tank. The method comprises the steps of firstly, introducing an industrial crude hydrogen source into the gas compression device to compress the industrial crude hydrogen source, then introducing the compressed crude hydrogen source into the organic liquid hydrogen storage medium hydrogenation device to carry out catalytic hydrogenation, feeding a material subjected to catalytic hydrogenation into the hydrogen-rich hydrogen storage medium storage tank, feeding the material in the hydrogen-rich hydrogen storage medium storage tank into the hydrogen-rich hydrogen storage medium dehydrogenation device for dehydrogenation, and finally, discharging high-purity hydrogen from one outlet after passing through the hydrogen-rich hydrogen storage medium dehydrogenation device. Additional gas purification equipment is not needed, the purification problem of an impurity-containing industrial crude hydrogen source is solved, and high-purity hydrogen meeting the use standard can be output.
Owner:陕西氢易能源科技有限公司
Rotating disk granulation device and producing process thereof
PendingCN112045197AReduced Chances of ContaminationPrevent oxidationIntermediate frequencyRotating disc
The invention provides a rotating disk granulation device and a producing process thereof. The rotating disk granulation device comprises a smelting area, a granulation area and a cooling separation area, wherein a raw material is heated through an intermediate frequency furnace in the smelting area; a rotating disk system is arranged in the granulation area; and the raw material is cooled and formed in the cooling separation area. According to the rotating disk granulation device, the raw material is directly smelted to be fed into a rotating disk; uniform-size metallic balls are formed through the rotating disk; the raw material is directly subjected to induction smelting through the intermediate frequency furnace; and the rate that the raw material is contaminated is reduced. The wholemanufacturing process is completed in high vacuum, so that the product can be prevented from being oxidized; and the product performance is improved.
Owner:HUNAN TIANJI SMART MATERIAL TECH CO LTD
Wafer full-automatic screen printing machine
ActiveCN113002150ASimple structureStable structureScreen printersScreen printingScreen printingWafering
The invention discloses a wafer full-automatic screen printing machine, and relates to the technical field of wafer full-automatic screen printing machines, in particular to the wafer full-automatic screen printing machine. The wafer full-automatic screen printing machine comprises an automatic feeding mechanism, an automatic transferring mechanism is installed on one side of the automatic feeding mechanism, and an automatic photographing deviation rectifying mechanism is installed on one side of the automatic transferring mechanism. An HMI man-machine exchange device is installed above the automatic photographing deviation rectifying mechanism, a printing screen mechanism is installed on one side of the HMI man-machine exchange device, an AOI optical detection device is installed on one side of the printing screen mechanism, a finished product discharging conveying belt is installed on one side of the AOI optical detection device, a finished product discharging mechanism is installed on one side of the finished product discharging conveying belt, and a bottom cabinet is installed below the finished product discharging mechanism. The wafer full-automatic screen printing machine is excellent in structure, low in energy consumption, efficient in productivity, very stable in structure, low in rejection rate of produced products, high in precision of the produced products and reliable in quality.
Owner:昆山市和博电子科技有限公司
AIE photosensitizer based on pyridinium salt as well as preparation method and application of AIE photosensitizer
ActiveCN114539239ARaw materials are easy to getHigh yieldAntibacterial agentsOrganic chemistryPhotosensPyridinium
The invention provides an AIE photosensitizer based on pyridinium salt as well as a preparation method and application of the AIE photosensitizer, and belongs to the technical field of biomedical materials. In the AIE photosensitizer provided by the invention, the triphenylamine derivative serving as a donor not only has very strong electron donating ability, but also has a typical propeller structure, and endows a material with an aggregation-induced emission (AIE) property. A novel acceptor-pyridinium group with stronger electron accepting capability is introduced through pyridine cationization, so that better HOMO-LUMO separation and lower delta EST are realized, and a more effective ISC process is promoted. In addition, an intramolecular charge transfer (ICT) effect is also increased by introducing a cation acceptor, the separation and transfer capabilities of electrons are enhanced, and the generation of I-type ROS is greatly promoted. Experimental results show that the AIE photosensitizer based on the pyridinium salt has efficient ROS generation efficiency, especially efficient HO. Generation efficiency.
Owner:SOUTH CHINA UNIV OF TECH
Super-conducting generator
InactiveCN102684452ANovel structureSimple structureDynamo-electric machinesSuperconductor elements usageSurface mountingStator coil
The invention relates to a super-conducting generator and belongs to the field of generating devices. Two ends of a cylindrical non-magnetic frame are respectively and fixedly connected with an end cover, a stator is installed on the inner surface of the cylindrical non-magnetic frame, a rotor is arranged in the stator, a cylindrical gap is reserved between the stator and the rotor, and the extending end of the bottom of a rotary non-magnetic shaft of the rotor is connected with an auxiliary motor. The stator comprises a stator coil and an arched permanent magnet, wherein the stator coil is wholly installed around the inner surface of the cylindrical non-magnetic frame. The rotor comprises the rotary non-magnetic shaft, a cylindrical non-magnetic bracket surrounding the periphery of the rotary non-magnetic shaft, a permanent magnet cylinder moving around the cylindrical non-magnetic bracket and an end plate arranged at the end of the rotor. The super-conducting generator has the advantages of being novel and simple in structure, strong in practical applicability, capable of producing environment-friendly electric energy, changing generation quality, improving generation efficiency, changing a generating mode using traditional energy sources, efficiently producing the energy, being applied to various fields and meeting the electric energy requirements of various fields.
Owner:彭浩
Distributed photovoltaic energy storage charging system
PendingCN112117820AEfficient production capacityIncrease profitPhotovoltaic supportsSolar heating energyMaterials scienceEnergy conservation
The invention discloses a distributed photovoltaic energy storage charging system which is applied to a building group in a set range. The system comprises a plurality of fixed photovoltaic devices and photovoltaic devices with fixed installation angles, which are are respectively arranged at positions where solar rays are always not shielded by buildings in the range of the building group; a plurality of movable photovoltaic devices which are arranged to be photovoltaic devices with rotating angles and are respectively arranged at the positions where solar rays are blocked by buildings in therange of the building group; a charging and discharging controller which is in bidirectional connection with the fixed photovoltaic device and the movable photovoltaic device so as to output the electric energy generated by the fixed photovoltaic device and the movable photovoltaic device to an electric load connected with the charging and discharging controller. The occupied land problem can bereduced, the productivity efficiency of the photovoltaic devices is improved, and energy conservation and emission reduction are achieved.
Owner:深圳市瑞能时代科技有限公司
Technological scheme for manufacturing rounded granular potassic fertilizer with high concentration
InactiveCN102464500AHigh activityStrong cementing abilityPotassium fertilisersHigh concentrationPrill
The invention discloses a technological scheme for manufacturing a rounded granular potassic fertilizer with high concentration. Commercially-available powdered potassic fertilizer materials are put in a disc granulator or a rotary drum granulator; an aluminum sulfate / acidic solution with a certain concentration and a sodium silicate solution are sprayed into the disc granulator or the rotary drum granulator in proportion, wherein the aluminum sulfate / acidic solution and the sodium silicate solution serve as granulation binder; and the rounded granular potassic fertilizer product is prepared through rolling granulating, drying and screening. The content of potassium oxide can reach over 60% to the maximum. The technological scheme for manufacturing the rounded granular potassic fertilizer with high concentration has the characteristics of simple operating process, low cost, large production capacity, roundness for product granules, high strength and the like; and no three wastes are produced in production, so that the technological scheme is energy-saving and environment-friendly and has a very broad market prospect.
Owner:SHANDONG AGRI UNIV FERTILIZER TECH CO LTD
Wind turbine generator set performance-guaranteeing maximum wind energy capturing method based on BLS and double-layer SMC
ActiveCN110889780AReduce usageReduce buffetingData processing applicationsWind motor controlFailure rateControl signal
The invention discloses a wind turbine generator set performance-guaranteeing maximum wind energy capturing method based on BLS and a double-layer SMC. The method includes solving a control target forrealizing maximum power tracking of the wind turbine generator; calculating a maximum power tracking error according to an effective wind speed estimation value given by a wind speed estimation modelbased on the BLS; designing the upper and lower bounds of the maximum power tracking error, converting the constrained maximum power tracking error into an unconstrained variable, solving the dynamiccharacteristics of the unconstrained variable, and designing a control signal expression and a control gain updating rate according to the double-layer SMC principle. The method is low in implementation cost, system overshoot and tracking errors can be reduced; meanwhile, the transient and steady-state performance of the system is guaranteed, the mechanical load of a unit transmission chain system can be reduced, the failure rate is reduced, the service life of the unit is prolonged, the implementation process is simple, the practicability is good, and compared with a traditional optimal torque control algorithm, the unit productivity can be improved, and the economic benefits of a wind power plant are increased.
Owner:ZHEJIANG UNIV
Scanning ferromagnetic resonance (FMR) for wafer-level characterization of magnetic films and multilayers
InactiveCN110431409AEfficient production capacitySemiconductor/solid-state device testing/measurementMeasurements using electron paramagnetic resonanceLine widthWafer
A ferromagnetic resonance (FMR) measurement system is disclosed with a waveguide transmission line (WGTL) connected at both ends to a mounting plate having an opening through which the WGTL is suspended. While the WGTL bottom surface contacts a portion of magnetic film on a whole wafer, a plurality of microwave frequencies is sequentially transmitted through the WGTL. Simultaneously, a magnetic field is applied to the contacted region thereby causing a FMR condition in the magnetic film. After RF output is transmitted through or reflected from the WGTL to a RF detector and converted to a voltage signal, effective anisotropy field, linewidth, damping coefficient, and / or inhomogeneous broadening are determined based on magnetic field intensity, microwave frequency and voltage output. A plurality of measurements is performed by controllably moving the WGTL or wafer and repeating the simultaneous application of microwave frequencies and magnetic field at additional preprogrammed locationson the magnetic film.
Owner:TAIWAN SEMICON MFG CO LTD
Negative oxygen ion polyester fiber with four-leaf-shaped skin-core structure and preparation method thereof
ActiveCN112176453AReduce production efficiencySoaring costsFilament/thread formingConjugated synthetic polymer artificial filamentsPolyesterFiber
The invention belongs to the technical field of functional fibers, and relates to a negative oxygen ion polyester fiber with a four-leaf-shaped skin-core structure and a preparation method thereof. The composite fiber is composed of a modified polyester / functional additive skin layer and a polyester core layer, wherein the mass ratio of the skin layer to the core layer is 1:1-1:4; and modified polyester in the skin layer is poly(2,5-dihydroxy ethylene terephthalate) resin or poly (2-hydroxy ethylene terephthalate) resin, and functional additives are non-radioactive natural mineral powder withan obvious negative ion generation effect and include but not limited to tourmaline, serpentine and rare earth minerals. Spinning is carried out through a four-leaf skin-core structure special-shapedspinneret plate to obtain the polyester fiber with the four-leaf skin-core structure. The prepared fiber material is good in fiber uniformity due to the fact that the skin layer is the modified polyester and is good in compatibility with the core layer; and in addition, the functional additives are all located on the skin layer with the large specific surface area and can make full contact with air to stably release negative ions. The fiber can be used for human body clothing fabrics or indoor textiles.
Owner:江苏家来福纺织有限公司
Wind turbine generator guaranteed performance control method based on UDE
ActiveCN110985288ASimple designAvoid designWind motor controlMachines/enginesControl signalControl objective
The invention discloses a wind turbine generator guaranteed performance control method based on a UDE principle. A control target of a wind turbine generator to achieve maximum power tracking is obtained, a maximum power tracking error is calculated, upper and lower bounds of the maximum power tracking error are designed, the constrained maximum power tracking error is converted into an unconstrained variable, the dynamic characteristics of the unconstrained variable are obtained, an ideal control signal expression is designed, the UDE principle is used for estimating an unknown function in anideal control signal, and a final control signal expression is obtained. According to the method, the system overshoot and tracking errors can be reduced, meanwhile the transient and steady-state properties of a system are ensured, the design process is simple, the impact of the overshoot caused by large turbulence on the system can be reduced, thus the service life of a unit is prolonged, the failure rate is decreased, control parameters needing to be debugged are few, the implementation process is simple, the practicability is good, compared with a traditional optimal torque control algorithm, the capacity of the unit can be improved, and economic benefits of a wind power plant are increased.
Owner:ZHEJIANG UNIV
Alloy for hot-extruding copper and copper alloy mold and preparation method thereof
ActiveCN101724773AImprove high temperature resistanceMeet temperature requirementsHigh intensityImpurity
The invention relates to a special material for producing a copper and copper alloy mold by an extrusion method, in particular to a special material suitable for an extrusion mold used for extruding a high strength copper alloy. The special material for the extrusion mold comprises the following components in percentage by weight: 42-45% of Ni, 19-21% of Cr, 2.5-3% of Mo, 1.2-1.8% of Mn, 2-2.3% of Ti, 0.1-0.5% of V, 0.003-0.01% of B, not more than 0.08% of C, and the balance of Fe, wherein the content of impurity in the alloy is not more than 0.5%. A copper alloy tubular product which is extruded on an extruder by the extrusion mold made of the material has the service life more than 10 times that of a conventional hot mold steel H13.
Owner:江苏隆达超合金股份有限公司
A kind of n-fe/fec 3 @acMicrobial fuel cell air cathode electrocatalytic material and preparation method thereof
ActiveCN108461765BThe preparation process is matureSimple preparation processCell electrodesBiochemical fuel cellsActivated carbonFuel cells
The invention discloses a N-Fe / FeC 3 The preparation method of @AC microbial fuel cell air cathode composite electrocatalytic material comprises the following steps: (1) adding activated carbon to deionized water, and ultrasonically dispersing to obtain a uniformly dispersed solution for use; (2) adding potassium ferrocyanide and Ultrasonic dispersion of polyvinylpyrrolidone in the solution obtained in step (1), and then vigorously stir; (3) slowly drop ferric chloride solution into the solution obtained in step (2), continue to stir, and then stand at room temperature for aging; (4) The solution obtained in step (3) is filtered and cleaned, and then dried in an oven to obtain the product; (5) the product obtained in step (4) is placed in a tube furnace and calcined in a nitrogen environment; after that, it is cooled to room temperature, that is Obtain the composite catalytic material. The microbial fuel cell composite catalytic material prepared by the invention has good catalytic activity and good stability, simple preparation process and low price, and is suitable for the industrialized application of the microbial fuel cell.
Owner:WUHAN UNIV
Degraded starch foaming machine
Owner:NANJING YONGTENG CHEM EQUIP
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