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294results about How to "Easy to scale application" patented technology

Method for recycling positive material from water-system waste lithium iron phosphate battery

The invention discloses a method for recycling a positive material from a water-system waste lithium iron phosphate battery. The method comprises the following steps: elaborately disassembling fully-discharged waste lithium iron phosphate battery to obtain an undamaged positive plate, separating a positive active material from a current collector in a way of immersing through deionized water, and drying and ball-milling the active material to obtain a lithium iron phosphate positive material to be recycled; respectively testing carbon content and ratio of Li, Fe and P elements of the lithium iron phosphate positive material to be recycled, adding a lithium source and an iron source, adjusting a mole ratio of Li to Fe to P to be (1.0-1.1):1:1, further adding the lithium source, the ion source and the phosphate source according to a ratio of 1:1:1 and adjusting C content ratio in the material; and performing ball milling, low-temperature pre-sintering and high-temperature sintering on the material of which ratio of the elements is adjusted to obtain the recycled lithium iron phosphate positive material. The recycled material has the advantages that 0.1C discharging capability can reach up to 156mAh / g, 2C discharging capability can reach up to 120mAh / g, the retention ratio of 0.1C discharging capability after 50 times of recycling is greater than 99% and various electrochemical properties are excellent. The method disclosed by the invention is low in cost and simple in process; the secondary pollution is avoided.
Owner:UNIV OF SCI & TECH BEIJING

Large-scale solar water decomposition hydrogen production method based on photocatalysis - photoelectrocatalysis

ActiveCN107012474AGood crystallinitySolve the problem of storageCellsEnergy inputPhotocatalysisDecomposition
The invention provides a high-efficiency large-scale solar water decomposition hydrogen production technique based on photocatalysis - photoelectrocatalysis. The technique comprises the following steps that soluble high-valence electron carriers are converted into low-valence electron carriers by a powdered photocatalyst under illumination of the sun, so that large-area solar storage is realized, besides, oxygen is emitted, and protons are generated; an electrolyte solution storing the electron carriers and the protons is conveyed into a photoelectrocatalysis basin; and a photon-generated carrier is generated at the anode of the photoelectrocatalysis basin by utilizing the sunlight, so that the low-valence electron carriers are oxidized into the high-valence electron carriers, and protons are combined at the cathode of the photoelectrocatalysis basin to generate hydrogen. After the hydrogen is collected, the electrolyte solution is returned to a photocatalysis system for recycling. The whole reaction is driven by sunlight to realize the conversion of solar energy into hydrogen energy.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Lithium element supplementing method for electrode of lithium ion battery

The invention aims at providing a method for supplementing lithium element in a new lithium ion battery. A liquid solution method is used for supplementing lithium for an electrode which needs to supplement with lithium element, and the lithium element supplementing method has better process feasibility. The method comprises the following steps: preparing a solvent which can dissolve metal lithium, and dissolving the metal lithium to form a lithium solution; enabling an electrode sheet to be in full contact with the lithium solution and enabling the lithium solution to infiltrate into the electrode; removing the solvent in the electrode sheet to obtain the electrode sheet after lithium supplementation. By adopting the method provided by the invention, the lithium element can be added into the electrode sheet, and the discharge capacity of the lithium ion battery assembled by the electrode can be improved.
Owner:徐兆清

Microbial organic fertilizer having saline-alkali soil improvement function

InactiveCN104961611AImprove food production capacityEffectively adjust the balanceFertilizer mixturesMicroorganismAlkali soil
The invention discloses microbial organic fertilizer having a saline-alkali soil improvement function. The microbial organic fertilizer is prepared by taking algae, straws and manure as raw materials by means of a composite microbial two-step fermentation process. The microbial organic fertilizer has functions of microbial fertilizer, organic fertilizer and algae fertilizer and is rich in algae functional active ingredient and a great amount of probiotics and capable of effectively adjusting balance of microorganisms in soil, decomposing organic or inorganic components such as organic matters, minerals and the like in the soil, eliminating caking, sanding, salting and the like of the soil caused by abused application of chemical fertilizer, effectively improving the soil, improving the stress resistance of crops and improving the productivity of crops; furthermore, the microbial organic fertilizer can promote the release of organic matters in the soil, improve the physical and chemical structure of the salted soil, improve the clustering and permeation performance of the soil, improve the fertility of the soil and improve the grain productivity increasing capacity of the saline-alkali soil and is an excellent saline-alkali soil improvement agent and crop growth accelerator.
Owner:QINGDAO JIARUI BIOLOGICAL TECH

Power special quantum encryption gateway system

The invention provides a power special quantum encryption gateway system. The system comprises a power special quantum encryption gateway communicated with a gateway management device through a quantum link; the power special quantum encryption gateway is used for performing encryption communication through the quantum link or a classic link; a quantum secret key distributing device is integrally arranged on the power special quantum encryption gateway and comprises a vertical integration model and a transverse integration mode; the quantum link comprises a quantum secret key sending device and a quantum secret key receiving device which are connected with each other through an optical fiber or a free space; the gateway management device comprises a user authentication module, a user right / certificate management module, a quantum secret key management module and a communication interface module. Compared with the prior art, the power special quantum encryption gateway system provided by the invention is capable of synchronously supporting the traditional mode encryption function and the quantum mode encryption function, and capable of providing unconditional information security assurance for the power system data transmission under the quantum mode, and convenient for the large-scale deployment and industrial practicality of the power special quantum encryption network.
Owner:STATE GRID CORP OF CHINA +3

Molten salt tube-shell type steam generating device and method

InactiveCN101699163AStable steam parametersIncrease effective heat storage capacitySteam generation using hot heat carriersEngineeringMolten salt
The invention provides a molten salt tube-shell type steam generating device and a molten salt tube-shell type steam generating method. The device comprises a tube-shell type heat exchanger, a steam separation output component and a heating and heat preservation component, wherein the steam separation output component is arranged on the top of the tube-shell type heat exchanger, and the heating and heat preservation component is arranged on the outer side of the container wall of the tube-shell type heat exchanger; the tube-shell type heat exchanger is provided with a top tube box, a tube body and a bottom tube box in sequence from top to bottom, wherein the inside of the tube body is provided with tube bundles of which both ends are fixedly connected with the tube body by tube plates, and the gaps between the tube bundles are filled with molten salt; and the outer side of the tube body is provided with a molten salt inlet tube and a molten salt outlet tube, and the bottom tube box is provided with a water inlet tube and a water outlet tube. The method comprises the following steps of: pre-heating the tube body; and orderly performing molten salt filling, hot water filling, and steam separating and outputting. The device has the advantages of big effective heat storage capacity, long-term stable operation, and relatively low manufacturing cost and maintenance cost, and can meet the requirements on large-scale solar mid- and high-temperature heat utilization in industry.
Owner:SOUTH CHINA UNIV OF TECH +1

Carbon dioxide subcritical extraction, recycling and reusing method for electrolyte of waste lithium ion battery

The invention provides a carbon dioxide subcritical extraction, recycling and reusing method for the electrolyte of a waste lithium ion battery, belonging to the field of recycling and reusing of solid waste. The method comprises the following steps: after complete discharging of the waste lithium ion battery, dismounting the waste lithium ion battery and removing a shell, positive and negative terminals, sealing rings and cover plates; transferring the electrolyte, current collectors with positive and negative electrode materials and a diaphragm into a supercritical extraction apparatus; adjusting the temperature, pressure, extraction time and flow of a supercritical carbon dioxide fluid and extracting an organic solvent and an additive; and subjecting the obtained solvent to component analysis, supplementing electrolyte salt, the organic solvent and the additive according to analysis results and adjusting a ratio to prepare electrolytes with different functions. The method effectively prevents degradation and dissipation of heat-sensitive substances; operation parameters are easy to control; extraction, separation and recovery are integrated together; later complicated treating procedures are omitted; and the utilization rate of resources is higher.
Owner:HARBIN INST OF TECH

Condensate-oil-resistant foam discharging agent, preparation method thereof and application of foam discharging agent

ActiveCN107652961AMeet the technical requirements of liquid drainage and gas recoveryEasy to scale applicationDrilling compositionSulfonateAlcohol
The invention provides a condensate-oil-resistant foam discharging agent, a preparation method thereof and an application of the foam discharging agent. The condensate-oil-resistant foam discharging agent comprises, in weight percent of 100%, 30%-70% of betaine surfactants, 5%-12% of fluorocarbon surfactants, 2%-5% of cocoanut fatty acid diethanolamide, 2%-11% of sodium fatty alcohol polyoxyethylene ether sulfonate, 5%-9% of sodium dodecylsulphate, 2%-3% of ethyl alcohol and the balance water. The condensate oil content of the foam discharging agent in accumulated liquid of a condensate gas well is within the range of the volume ratio of 0-90%, high temperature resistance of the foam discharging agent reaches 120 DEG C, highest mineralization resistance of the foam discharging agent reaches 30000mg / L, condensate oil resistance of the foam discharging agent reaches 90%, the foam discharging agent has excellent foaming capacity, can meet requirements of a gas recovery by liquid discharging process of the condensate gas well and is applicable to condensate gas wells with high condensate oil production fluids, and large-scale application of on-site gas wells is facilitated.
Owner:PETROCHINA CO LTD

Method for preparing functional grease by enzyme catalysis and modificaiton on tea oil

The invention discloses a method for preparing functional grease by enzyme catalysis and modification on tea oil, comprising the following steps of: mixing tea oil and middle carbon chain fatty acid which are used as raw materials in the mole ratio of 1:(1-1):12; adding water accounting for 0.01-2 percent of the weight of the raw materials; not taking organic solvent as a medium in a nonaqueous phase system, passing through a packed column filled with 1,3-specific immobilized lipase in reverse flow way; reacting at 30DEG C-80 DEG C for 0.5h-3h; and separating the product to obtain grease withrapid energy supply and low heat quantity function, wherein in the functional grease, the middle carbon chain fatty acid is mainly positioned on the sn-1,3 site of triglycercide and unsaturated oleicacid of the fatty acid is mainly positioned on sn-2 site of the triglycercide. The invention can achieve favorable effects of maintaining the stable catalytic activity of enzyme and prolonging the service period of the enzyme by adding a proper amount of water in the raw materials.
Owner:ACAD OF NAT FOOD & STRATEGIC RESERVES ADMINISTRATION

Method for preparing hollow fiber molecular sieve membranes in batches

The invention relates to a method for preparing hollow fiber molecular sieve membranes in batches, which is used for scale preparation of molecular sieve membranes supported by a ceramic hollow fiber supporting bodies. The method comprises the following steps: carrying out surface pretreatment on the hollow fiber ceramic supporting bodies and regularly packaging the hollow fiber ceramic supporting bodies into a cluster; coating molecular sieve seed crystal particles on the surfaces of the hollow fiber supporting bodies and drying to obtain a seed crystal hollow fiber cluster; placing the seed crystal hollow fiber cluster into membrane synthetic fluid to carry out hydro-thermal synthesis, washing by deionized water and drying after finishing hydro-thermal synthesis so as to obtain the hollow fiber molecular sieve membrane cluster. The method has the advantages of high mechanical degree, strong maneuverability, high yield and good repeatability and has important significance for industrial production and application popularization of the hollow fiber molecular sieve membranes.
Owner:NANJING UNIV OF TECH

Pig small intestine epithelial cell line and construction method thereof

The invention discloses a pig small intestine epithelial cell line (ZYM-SIEC02), which was preserved in China Center for Type Culture Collection on January 13th, 2010 with a collection number of CCTCC-C201001. The invention also discloses the construction method of the cell line. The cell line has the advantages of low nutrient condition requirements, quick cell growth, easy cultivation and convenient promotion and application.
Owner:NORTHWEST A & F UNIV

Ecological soil conditioner for improving saline and alkaline land soil and preparation method

The invention belongs to the technical field of soil improvement and particularly relates to an ecological soil conditioner for improving saline and alkaline land soil and a preparation method. The ecological soil conditioner is prepared from, by weight, 30-80 parts of industrial residues, 20-40 parts of sulfonated humic acid, 10-20 parts of pyroligneous solution, 10-30 parts of nano-filler, 5-15 parts of pH-sensitive hydrogel, 1-5 parts of water-soluble starch, 1-5 parts of cyclodextrin, 1-5 parts of medium trace elements and 0.5-3 parts of traditional Chinese medicine extract. The soil conditioner is environmentally friendly and safe, the application method is simple and easy to implement, the soil conditioner can be applied along with fertilizer in a drip irrigation mode, the utilization rate of the fertilizer is increased, nutrient elements can be released along with pH changes of the soil environment, a certain slow release effect is achieved, the utilization rate of the soil conditioner is greatly increased, cost is greatly reduced, meanwhile, the status quo of the saline and alkaline land soil can be improved, the organic matter content of the soil can be increased, and diseases and pests of the soil can be reduced.
Owner:SICHUAN SHILIWANG AGRI SCI & TECH DEV CO LTD

Production method of paper RFID hot stamping label

The invention belongs to the technical field of information, and in particular relates to a production method of a paper RFID hot stamping label. A paper substrate is used as an antenna substrate, wherein variable or invariable barcode information or a LOGO pattern is printed on one side of the antenna substrate, the other side of the antenna substrate is subjected to alignment printing to form an electronic label antenna surface, and then the electronic label antenna surface is compounded and compacted with a PET film coated with an isolation layer to obtain an antenna; a chip is bound to the compounded antenna to be manufactured into an electronic label inlay layer; an adhesive film is coated on an inlay surface bound with the chip; then the hot stamping electronic label is cut into a single label or single-row labels by a positioning die, and the single label or the single-row labels are rolled up to obtain a product. The production method of the paper RFID hot stamping label disclosed by the invention realizes a dual-information safety guarantee of visual information and electronic label information, and is environment-friendly and pollution-free, and the prepared electronic label has non-transferability, high anti-counterfeiting strength, fast hot stamping speed and high efficiency.
Owner:SHANDONG TAIBAO PREVENTING COUNTERFEIT

Method for mounting coolant pipes of air conditioning system

The invention belongs to the field of the construction of civil architectures, and in particular relates to a method for mounting coolant pipes of an air conditioning system, which comprises: a first step of making preparations for the construction; a second step of machining copper pipes; a third step of braze-welding and connecting the copper pipes; a fourth step of laying the copper pipes; a fifth step of washing the copper pipes; a sixth step of performing airtight test; a seventh step of realizing the temperature preservation of a pipeline; an eighth step of vacuum-drying the pipeline system; a ninth step of supplementing a coolant; and a tenth step of performing pre-operation. In the invention, the copper pipes have the characteristics of bacteria growth inhibition, corrosion resistance, durability and long service life; and the method has the advantages of capacity of effectively improving a construction progress, relatively shorter construction period, and simple operation andconvenient maintenance because only a tube flaring kit, a pipe expander and a cutter are needed when the copper pipes are maintained, meets national requirements on energy-saving engineering and is favorable for promoting the research, development, integration and large-scale application of matching technology combining renewable energy sources and the architectures.
Owner:CHINA CONSTR SEVENTH ENG DIVISION CORP LTD

Method for preparing nickel lithium manganate by using waste lithium manganate battery

The invention discloses a method for preparing nickel lithium manganate by using a waste lithium manganate battery, and belongs to the field of recycling of the waste lithium manganate batteries. The embodiment of the invention comprises the steps: obtaining a LiMn2O4-containing positive active material from the waste lithium manganate battery, leaching the positive active material to obtain a Li<+> and Mn<2+>-containing solution; then adding nickel salt, lithium salt and a precipitator into the Li<+> and Mn<2+>-containing solution, reacting to obtain a precipitate, calcining to obtain spinel LiNi0.5Mn1.5O4, and simultaneously implementing recycling of manganate and lithium. A lithium ion battery and a supercapacitor can be prepared by using a LiNi0.5Mn1.5O4 material provided by the embodiment of the invention, the 0.1 C specific discharge capacity of the lithium ion battery is 128-135mAh / g, the capacity retention ratio after 100-time cycle is higher than 90 percent; the specific capacity of the supercapacitor is 170-185F / g and is basically undamped after 500-time cycle. The method provided by the embodiment of the invention is easy to operate and control, and facilitates the large-scale application.
Owner:CHERY AUTOMOBILE CO LTD

Composite medical dressing and preparation method thereof

The invention discloses a composite medical dressing and a preparation method thereof, and belongs to the technical field of medical dressings. The composite medical dressing obtained by compounding an organic quaternary ammonium salt to a bacterial cellulose membrane has good biocompatibility, benefits the reduction of pains of wounds, promotes healing of the wounds, and also has good sterilization and bacteriostasis functions. The invention also discloses the preparation method of the composite medical dressing. The method is characterized in that an organic quaternary ammonium salt solution and the purified bacterial cellulose membrane are compounded to make an organosilicon quaternary ammonium salt compounded to the bacterial cellulose membrane in order to prepare the composite medical dressing with good biocompatibility and good sterilization and bacteriostasis functions. The method has the advantages of simplicity, easy operation, and convenience for large scale application.
Owner:BEIJING DINGHAN HENGHAI BIOLOGICAL TECH DEV

Ecological soil conditioner capable of improving acid soil and preparation method

The invention belongs to the technical field of soil improvement and particularly relates to an ecological soil conditioner capable of improving acid soil and a preparation method. The ecological soil conditioner comprises raw materials in parts by weight as follows: 30-60 parts of carbonized distillers' grains, 10-20 parts of industrial and agricultural waste, 10-15 parts of sargassum, 10-15 parts of water hyacinth, 5-10 parts of plant ash, 5-15 parts of nano-modified clay, 5-10 parts of sodium alginate, 1-10 parts of tamarind polysaccharide gum, 1-5 parts of chelated secondary elements and trace elements and 0.1-3 parts of graphene oxide. The ecological soil conditioner can regulate the pH value of the soil, promote granular structure formation of the soil, improve the physical and chemical structures of the acid soil, increase organic matter content of the soil, improve the moisture and fertilizer retention capacity, improve physical characteristics of the soil, creates a good ecological environment for plant growth, is excellent, meets the organic and pollution-free agricultural development trend and has larger popularization and application value.
Owner:SICHUAN SHILIWANG AGRI SCI & TECH DEV CO LTD

Preparation method of dispersion fuel pellet with high uranium loading capacity

The invention discloses a preparation method of a dispersion fuel pellet with high uranium loading capacity, which comprises the steps of firstly adopting means such as pelleting, self-grinding balling and rolling coating to realize the balling of a uranium-based fuel and the coating with a reinforcing phase, then performing high temperature plasma sintering on a coated ball to obtain the uranium-based fuel pellet; forming a large amount of pores in a core pellet of the fuel by utilizing the volatilization of a pore-forming agent under high temperature, then promoting the low-temperature rapiddensification sintering of the reinforcing phase by combining the high temperature plasma sintering technology and a sintering aid, thus obtaining the dispersion fuel pellet with high uranium loadingcapacity, wherein the dispersion fuel pellet has a special core-shell structure in which the compact reinforcing phase coats the porous fuel core pellet, and the special core-shell structure is loosein the interior and compact in the exterior. The method has the advantages that the preparation is simple and the preparation cost is low, can be used for the scale production of the uranium-based fuel pellet; the uranium-based fuel pellet prepared by the method has the advantages of high thermal conductivity, high safety, high uranium loading capacity and high economy.
Owner:MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS

Light source device for removing organic matters and heavy metal ions by visible light and preparation method thereof

The invention provides a light source device for removing organic matters and heavy metal ions by visible light. The light source device adopts a visible light LED (Light Emitting Diode) as a light source. The invention further provides a preparation method of the light source device for removing the organic matters and the heavy metal ions by the visible light. The light source device disclosed by the invention has high removing rate of the organic matters and the heavy metal ions, can be used for treating pollutants in water and can also be used for degrading the pollutants in the air; meanwhile, the light source device can also be used for common illumination. Compared with the prior art, the light source device has the advantages of high photocatalytic degradation rate, no pollution, long service life, low cost and the like, and is good for large-scale application and universalness of photocatalysis, and the preparation method is simple.
Owner:SUZHOU SUNLIGHTS TECH

Motion trail accompanying determination method and device and server

InactiveCN110944296ASave human resourcesImprove efficiency in determining companion relationshipsParticular environment based servicesServices signallingData setTerminal equipment
The invention provides a motion trail accompanying determination method and device and a server. The method comprises: obtaining a first motion trail corresponding to first terminal equipment and a second motion trail corresponding to second terminal equipment from a preset data set, wherein the preset data set comprises motion trails of a plurality of terminal equipment and identifiers corresponding to the terminal equipment, and the motion trails are determined through signaling data of the terminal equipment; and judging whether the first terminal equipment and the second terminal equipmentare in an accompanying relationship or not according to the first motion trail and the second motion trail. The motion trails of the terminal equipment are obtained through the signaling data, whether the two terminal equipment are in the adjoint relationship or not is judged based on the motion trails of the two terminal equipment, and the adjoint relationship does not need to be determined manually, so that a large number of human resources are saved, meanwhile, the adjoint relationship determining efficiency is improved, and large-scale application of the method is facilitated.
Owner:智慧足迹数据科技有限公司

Active distribution network demand response control method based on hierarchical energy storage

The invention relates to an active distribution network demand response control method based on hierarchical energy storage. The method comprises a same layer source-storage coordinated response strategy, a cross layer storage-storage coordinated response strategy, a same layer source-storage-charge coordinated response strategy and a cross layer source-storage-charge coordinated response strategy. The same layer source-storage coordinated response strategy is used for onsite smoothing distributed energy network access real-time power fluctuation. The cross layer storage-storage coordinated response strategy solves the problem fed back by the present layer by authorizing to the energy storage system in the previous layer of power grid and aims at enhancing the consumption capacity of the distributed power supplies. The same layer source-storage-charge coordinated response strategy and the cross layer source-storage-charge coordinated response strategy perform optimization control according to the priority of maximizing consumption distributed power generation, load power supply and energy storage economic operation. The energy storage system is hierarchically accessed to the distribution network so that the characteristics of energy storage can be fully exerted and the economic performance of its application can be enhanced, and scale application of energy storage in the electric power system can be facilitated.
Owner:XUJI GRP +2

System and method for waste pyrolysis, gasification and fusion

The invention provides a system and method for waste pyrolysis, gasification and fusion. The system comprises a sorting device, a crushing device, a heat storage type rotating bed used for performing drying and pyrolysis treatment on waste so as to obtain pyrolytic water, pyrolytic oil and gas mixtures and pyrolytic carbon, a gasification and fusion reaction chamber used for making pyrolytic oil and hydrocarbon gas subjected to gasification and recombination under the high-temperature gasification effect of a plasma torch so as to obtain synthesized gas comprising CO and H2 and fusing the pyrolytic carbon into glass state slag, a heat exchange device, a power generation device and a coke quenching device. The heat storage type rotating bed is adopted to perform pyrolysis on pretreated waste raw materials; the gasification and fusion reaction chamber is used for gasifying the pyrolytic oil and gas mixtures, water obtained through drying serves as water for coke quenching of the pyrolytic carbon, and the obtained synthesized gas is high in yield and heat value and is used as fuel gas of a heat storage type radiant pipe; and steam obtained by performing heat exchange treatment on the synthesized gas can be used for power generation selling, and the 'harmless, reduction and recycling' treatment of waste is achieved.
Owner:SHENWU TECH GRP CO LTD

Preparation method of seaweed biological soil conditioner with saline and alkaline land improvement function

The invention discloses a preparation method of a seaweed biological soil conditioner with a saline and alkaline land improvement function. The soil conditioner is prepared with a compound microbial fermentation technology from raw materials including Enteromorpha, kelp and oyster shell powder, has the functions of seaweed fertilizer, microbial fertilizer and organic fertilizer, contains rich seaweed functional active ingredients and large quantities of probiotics, can effectively regulate microbial balance of soil, decompose organic or inorganic constituents such as organic matters, mineral substances and the like in the soil, eliminate soil hardening, desertification, salinization and the like caused by abuse of chemical fertilizer all year round and improve the soil effectively, has the specific function of improving the stress resistance of crops, and improves the crop capacity; the soil conditioner can especially promote release of the organic matters in the soil, improves the physicochemical structure of salinity soil, improves the soil aggregate and permeability, improves the soil fertility, improves the grain yield increase capacity of a saline and alkaline land and is an excellent saline and alkaline land soil conditioner and a crop growth promoter.
Owner:WEIHAI WENXI BIOLOGICAL TECH CO LTD

Immortalized canine adipic mesenchymal stem cell line and constructing method thereof

InactiveCN105779395APromote growthMultidirectional differentiation potential performanceMicroorganism based processesSkeletal/connective tissue cellsStem cell lineMesenchymal stem cell
The invention discloses an immortalized canine adipic mesenchymal stem cell line and a constructing method thereof. The immortalized canine adipic mesenchymal stem cell line capable of expressing SV40 large T antigen genes and having multidirectional differentiation is obtained by: transfecting a lentiviral vector carrying SV40 large T antigen (Ttag) by using canine adipic mesenchymal stem cells as host cells, integrating the Tag genes into an adipic mesenchymal stem cell genome and carrying out continuous passage and screening. This cell line is still active in case of 50 in-vitro passages, is high in differentiation and proliferation performance, never ages or dies, can also save medium cost and is an immortalized cell line.
Owner:NORTHWEST A & F UNIV

Improved friction nano-generator

ActiveCN109149992AEnhanced ability to capture chargeIncrease triboelectric charge densityFriction generatorsHigh power densityCharge density
The invention relates to the field of generators, and discloses an improved friction nano-generator, comprising a first power generation part and a second power generation part, wherein the first power generation part comprises a first friction layer; and a first ferroelectric layer; wherein the first friction layer is disposed on a surface of the first ferroelectric layer; the second power generation part includes a second electrode; the second electrode outputs electrical energy when mutual friction of the second power generating part and the first friction layer occurs. By polarization of the built-in medium introduced to the ferroelectric layer material, the friction charge density of the friction layer is improved and the generator output with higher power density can be obtained.
Owner:BEIJING INST OF NANOENERGY & NANOSYST

Stem cell culture medium

The invention relates to a stem cell culture medium which contains certain chemical components as follows: water-soluble non-polyelectrolyte polymers, inorganic salts, vitamins, amino acids, glucose, transferrin, insulin or a substitute with the same functions as the insulin (the IGF-1 / 2), and a fibroblast growth factor. The stem cell culture medium containing the certain chemical components is free of additives from an animal source, namely various animal products, trophoblast cells and conditioned mediums, and has the advantages that cell differentiation resulted from non-absolute purification of the traditional culture medium blood products can be avoided; a totipotential stem cell culture medium can be provided to effectively increase human totipotential stem cells (including the hESC and the hiPSC) in vitro, achieve a remarkable effect, and substitute for the traditional culture mediums from an animal source; due to the adoption of the stem cell culture medium stem cell culture medium, the quality stability of each product batch can be ensured effectively to facilitate the product standardization.
Owner:刘兴宇

Construction method for resisting uplift in internal mold of concrete box

The invention provides a construction method for resisting the uplift in the internal mold of a concrete box. The method comprises the following steps: welding the longitudinal reinforcing steel bars on the box wall of the concrete box to be cast with the main reinforcing steel bars of a pile foundation at the bottom of a foundation pit; embedding an internal mold in the foundation pit and arranging a batten or a support tube at the top of the internal mold; tensioning the longitudinal reinforcing steel bars of the box wall, which are welded with the main reinforcing steel bars of the pile foundation, and then, fixedly connecting the upper ends of the longitudinal reinforcing steel bars of the box wall with the batten or the support tube; and casting the concrete and resisting the buoyant force of the concrete applying on the bottom plate of the box mold by the reaction force generated by the welded longitudinal reinforcing steel bars of the box wall and the batten or the support tube, so that the internal mold can be pressed by the support tube to prevent the internal mold from going up. The invention is suitable for resisting the buoyant force in the internal mold of a small-size concrete box and has the characteristics of reliable buoyancy resistance and easily guaranteed construction quality; and compared with the conventional method, the invention does not need secondary transport with high labor consumption, economizes on human resources and improves the production efficiency.
Owner:HUNAN SUNPEAK CONSTR

Preparation method of negative electrode slurry

The invention provides a preparation method of negative electrode slurry. The preparation method comprises the following steps: (1) preparing a glue solution; (2) curing the glue solution; (3) mixingdry powder; (4) carrying out high-viscosity mixing; (5) carrying out first high-speed dispersion; (6) carrying out second high-speed dispersion; (7) adjusting the viscosity; (8) carrying out reverse stirring; according to the preparation method of the negative electrode slurry, the dispersion uniformity, the stability and the rheological property of the slurry can be improved, the production efficiency of a coating process is improved, and the coating appearance and the coating thickness uniformity are improved, so that the electrical performance and the safety performance of a lithium ion battery are improved. And on the premise of ensuring the performance of the slurry, the stirring time of the slurry is shortened, large-scale application is facilitated, and great production practice significance is achieved.
Owner:TIANJIN ENERGIES

Agroforestrial biomass gasification furnace adapted to multiple raw materials

The invention discloses an agroforestrial biomass gasifying furnace adapted to multiple raw materials, which comprises a rotary poking device, a hydraulic poking elevator and a feeding inlet which are arranged on the top part of a gasifying furnace, wherein a gasifying reaction chamber is arranged in the cavity of the gasifying furnace; the gasifying reaction chamber is divided downwards into a preheating dry chamber, an oxidizing reaction chamber, and a reducing reaction; the middle-lower part of a furnace body is provided with an automatically-overturned grate which is transmitted on the exterior of the furnace body; and the bottom part of the furnace body is provided with a continuously rotary carbon discharging device. The gasifying furnace disclosed by The invention has advantages that hub-shaped material is reacted in the gasifying furnace so as to discharge the carbon continuously; the grate is rotated so that all casting-iron finned tubes are arranged horizontally; rice-hull-shaped light-small material is reacted in the gasifying furnace; casting-iron tubes are rotated timely so as to discharge material discontinuously; the bottom of the gasifying furnace is provided with a conically rotary device with a pocking sheet and a pocking nail; in a rotating procedure, the poking sheet is rotated so that the gasifying furnace discharges the material evenly; the poking nail prevents the gasifying furnace from being bridged in a cone shape; the gasifying furnace realizes a purpose that multiple raw materials use a same type of furnaces; the furnace body can be enlarged through measure disclosed by The invention; gas production quantity of the single furnace is increased; and the agroforestrial biomass gasifying furnace is adapted to multiple raw materials and realizes industrialization and scale production.
Owner:NANJING FORESTRY UNIV

Perovskite crystal composite material, and preparation method and application thereof

The invention relates to a perovskite crystal composite material. The perovskite crystal composite material comprises perovskite crystals and an organic doping agent doped in the perovskite crystals. The general chemical formula of the perovskite crystals is MA<x>FA<1-x>PbI<3-y-z>Br<y>Cl<z>; x is larger than 0 and smaller than 1, y is larger than 0 and smaller than 3, and z is larger than 0 and smaller than 3; the organic doping agent is selected from one or more of long-chain primary amine, multi-amine and hydramine; and the carbon chain of the long-chain primary amine comprises 3-16 carbon atoms. With respect to the perovskite crystal composite material, because small organic molecules are doped in the perovskite crystals, the deliquescence resistance of the perovskite crystal composite material is improved. Furthermore, the thermal stability of the perovskite crystal composite material is also improved. The invention also discloses a preparation method and an application of the perovskite crystal composite material.
Owner:昆山协鑫光电材料有限公司
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