2062results about How to "Controllable" patented technology

A closed multi-room fluidized bed sludge drying method is provided, which is a sludge drying method having the advantages of simple equipment structure, convenient operation, strong sludge adaptability, high thermal efficiency, safety, continuity, stability, etc. After the mechanically dewatered sludge is mixed with the back-mixed sludge, the mixture is dried room by room in an inert particles multi-room fluidized bed dryer (3). The first room and the second room of the inert particles multi-room fluidized bed dryer (3) adopt inert particles (f) as heat storage medium. Gas from a cyclone separator (5) goes through a spray tower (7) and returns into an air heating unit (4) through a circulating fan (10). Part of dried sludge (e) at the lower part of the cyclone separator (5) enters the inert particles multi-room fluidized bed dryer (3) through the back-mixing in a mixer (2). Waste liquid from the bottom of the spray tower (7) enters a waste liquid circulating pool (8), with part of waste liquid circulating into the spray tower (7) and part into a sewage treatment system.

This invention relates to a method for preparing olivine-type phosphate-series lithium ion battery anode material. The method comprises: mixing one or more of ferrous salt solution, cobalt salt solution and manganese salt solution with oxalic acid or oxalate (precipitating agent) aqueous solution to obtain composite oxalate precursor, uniformly mixing with lithium source and phosphorus source by ball milling, and reacting in inert or weak-reductive atmosphere to obtain olivine-type phosphate-series lithium ion battery anode material. The method utilizes co-precipitation method for metal ion doping, and realizes molecular level uniform mixing among different ions. The obtained olivine-type phosphate-series lithium ion battery anode material has uniform chemical and physical compositions. The average particle size can be controlled within 0.3-10 mu.m. The first charge and discharge cycle specific capacity can reach 150 mAh / g at 0.1 C rate and room temperature. The livine-type phosphate-series lithium ion battery anode material has such advantages as high cycle performance and high charge / discharge performance.

The invention relates to a safe type adjustable rigidness mechanical joint of a magnetic rheologic fluid clutch in the technical field of machinery, which includes a power mechanism, a transmission mechanism, an output mechanism, a drive sensing part and a changeable rigidness mechanism; the transmission mechanism is connected with the output mechanism; the changeable rigidness mechanism is just the magnetic rheologic fluid clutch; the magnetic rheologic fluid clutch is connected with the power mechanism and the transmission mechanism; the drive sensing part relates to a servo motor driver and a motor sensor. The motor driver realizes to adjust a joint speed by a speed ring by the feedback of a coder and a self-current ring is used for controlling the motor to output current; thereby controlling the magnetic field intensity in the clutch and then controlling the joint rigidness and the transferring moment of the clutch. Both the rigidness and the speed of the invention have controllability, which can realize the safety of the joint simultaneously when maintaining the property of the joint. The safe type adjustable rigidness mechanical joint of the invention can protect the safety of the motor, a mechanical arm and a person once a collision happens, which can realize the conversion between rigidness and flexibility of the joint and ensure the moving precision of the tail end.

The invention belongs to the technical field of functional material preparation, and relates to a novel method for preparing graphene through carrying out ultrasonic stripping on graphite. The method comprises the following steps: uniformly mixing graphite powder and an intercalator in certain proportion in an organic solvent, carrying out stripping on the obtained mixture a certain time by using an ultrasonic water bath, carrying out centrifugal separation on the obtained object, and filtering the obtained product so as to obtain a graphene material. In the traditional process for preparing graphene through ultrasonic stripping, in the invention, a series of compounds such as naphthalene and the like are taken as an intercalator for preparing graphene. Compared with the prior art, the graphene prepared by using the method disclosed by the invention has the advantages of high quality, excellent performances, less defects, low impurity content, and the like; and especially the method is a physical process, thereby ensuring the perfect performances of the graphene. In addition, the method disclosed by the invention has the advantages of simpleness, easiness for operation, low preparation cost of products, high concentration of synthesized graphene dispersion liquid, and uneasiness for gathering, and has a good application prospect in the photoelectric field of graphene materials.

The invention discloses a chemical foamed concrete and a preparation method thereof. The concrete product is prepared by using a cementing material, a foaming agent, a compounded additive and water as raw materials through a chemical foaming principle, and the added compounded additive realizes stable foaming speed stability, uniform bubble diameter and controllability. The chemical foaming preparation method has the advantages of simplicity, low production investment cost, and convenient construction. The foamed concrete product prepared in the invention has the advantages of fireproof property, waterproof property, sound insulation, heat insulation, light weight, high compressive strength and environmental protection. The bulk density, the compressive strength and the heat conduction coefficient of the obtained product are less than 400kg / m<3>, more than 3.5MPa and less than or equal to 0.07W / (M.K) respectively. The above formula adopting alkaline ash comprising alkaline furnace ashes, alkaline slag, alkaline furnace slag and other wastes as raw materials realizes comprehensive utilization of resources, changes wastes into valuables, and accords with the demands of sustainable development of national circular economy.

The invention provides an LED pixel arrangement structure, a printing type display device with the LED pixel arrangement structure and a preparation method of the display device, and suitable for the field of display technology. The LED pixel arrangement structure comprises multiple pixel units, each pixel unit comprises four different colors of sub pixels, namely a red sub pixel R, a green sub pixel G, a sky blue sub pixel B1 and a dark blue sub pixel B2, the sub pixels of four different colors in the same pixel unit are in 2*2 rectangular arrangement, a random vertical side of the 2*2 rectangle is used to construct a reference axis of the x-y system, the pixel unit are in mirror symmetry in the axis x and axis y directions, and the sub pixels of the same color of connected pixel units form a same-color sub pixel area in 2*2 arrangement.

The invention discloses an electrochemiluminescence sensor for detecting trace pesticide residue and a method for detecting pesticide residue. An electrode preparation method (figure attached) comprises the following steps: selecting an identifier of the pesticide residue; preparing quantum dots and graphene nano material according to documents; and modifying the nano material, the quantum dots and the identifier onto the electrode surface of the sensor by the electrode surface modification technology. The method for detecting the trace pesticide residue comprises the following steps: connecting the modified electrode to an electrochemiluminescence instrument and detecting the pesticide residue in the sample extract. The electrode in the invention has high specificity and sensitivity capable of reaching ng level, a basic detection process is finished only within 3-5 min, and the cost is low. The method for detecting the pesticide residue by utilizing the electrode is fast and simple to operate, and the reaction is automatically finished and the result is automatically recorded by an apparatus.

The invention relates to an efficient porous structure design and optimization method based on a three-period minimal surface, belonging to the computer-aided design field. Firstly, the functional representation of porous structure based on three-period minimal curved surface and the corresponding porous structure design method are presented. Then, under the given external constraints, the energyfunction model is constructed to model the porous structure design, and the corresponding discretization form is given. Finally, topology initialization and geometry optimization are carried out to obtain the optimal porous structure under given constraints. The invention greatly shortens the design and optimization period of the cavity structure, and can give the optimal result in theory. The porous structure designed by the invention has the characteristics of smoothness, full connectivity, controllability, quasi-self-support and the like, and is suitable for the common 3D printing manufacturing method, and the internal structure of the printing process does not need additional support, so that the printing time and the printing material can be saved.

The invention discloses a Ti-Si molecular sieve / diatomite composite catalyst and a preparation method thereof, which is characterized in that: the catalyst is formed by compounding Ti-Si molecular sieve (such as TS-1 and TS-2) and diatomite with particular chemical property which is treated in a particular way, and is modified chemically by transition metal oxide after molding; the preparation method comprises the following steps: (1) after being treated with acid solution and alkaline solution, the diatomite needs heat treatment in high temperature to obtain particular chemical property; (2) the molding Ti-Si molecular sieve / diatomite composite catalyst is modified chemically by transition metal oxide (such as lanthanum and nickel). The composite catalyst can be used as the catalyst of selective oxidation reaction of the organic compound (such as the catalytic hydroxylation reaction of phenol) on fixed bed liquidoid, which uses hydrogen peroxide as the oxidant. The Ti-Si molecular sieve / diatomite composite catalyst has the advantages of high catalytic activity, high stability, long service life and easy separation, recovery and regeneration of the catalyst. When using the catalyst in the hydroxylation reaction of phenol of fixed bed liquidoid, under the reaction conditions of 84 DEG C, atmospheric pressure and 8.46h<-1> space velocity, the conversion rate of phenol is greater than 33%, the selectivity of diphenol reaches 99.9%, and the effective use rate of hydrogen peroxide is greater than 85%.

The invention provides a user permission management method and a user permission management system, which aim to solve the problem of complex user permission management. The user permission management method comprises the following steps that primary account numbers are created for all two-stage systems by a client end of a first-stage system administrator; the primary account numbers are respectively sent to client ends of two-stage system administrators of all of the two-stage systems by the client end of the first-stage system administrator, permissions of the client ends of all of the two-stage system administrators are set, and the permissions of the client ends of all of the two-stage system administrators include creation or management of respective two-stage system users and role assignment of the respective two-stage system users; the client ends of all of the two-stage system administrators are used for creating or managing the respective two-stage system users and assigning roles for the respective two-stage system users under the corresponding primary account numbers. By using the user permission management method provided by the invention, in the conditions of multiple users and complex user permissions, hierarchical management is realized, so that the administration authority is clear, and the problem of complex user permission management can be preferably solved.

The invention relates to a method for modifying a boron nitride nanosheet with polydopamine. The invention aims to provide a method of using a mixed solvent of a polar organic solvent and water to conduct ultrasonic stripping of hexagonal boron nitride and modifying a boron nitride nanosheet surface with polydopamine. The boron nitride nanosheet obtained by the method provided by the invention has the characteristics of good dispersibility in the mixed solvent of the polar organic solvent and water, high yield and long storage time. The polydopamine surface modified boron nitride nanosheet prepared by the method has easy storage properties and good dispersibility in a solvent. The method for modifying a boron nitride nanosheet with polydopamine provided by the invention has the advantages of simple operation, safety and low cost, etc.

An electrode material of Fe¿CLi phosphate and its composite metal phosphate is electrode material of LiFePO4 and LiFePO4 / MxP in high density spherical shape with diameter of 2micro m. The electrode material of LiFePO4 and LiFePO4 / MxP can be prepared by low ¿C temperature controllable one ¿C stage atomizing process in short flow.

The invention relates to a laser shaping method of a multi-scale functional surface of micronano for semiconductor material, relating to micronano material preparation and laser micromachining technical field; the invention aims at providing a method and a device for preparing femtosecond laser of super-hydrophobic functionalization for microstructural surface based on the semiconductor material and through the systematically technical design of multi-scale surface micro-shaping and microstructural surface processing, and realizing optional and controllable preparation of semiconductor material surface having multi-scale microstructure such as micron, submicron and nano. The invention solves the technical problems such as high cost, low efficiency and difficult operation in traditional preparation methods of microstructural surface with super-hydrophobic function.

The invention discloses a method for detecting an electrode of a molecular imprinting membrane of EDCs and the EDCs; the preparing method of the molecular imprinting membrane electrode comprises the following steps: a functional monomer is selected; template molecule of the EDCs, the functional monomer, a crosslinker, a porosity-making agent, an initiating agent and organic solvent are mixed evenly according to a certain molar ratio so as to prepare MIPs solution; nanometer material solution is prepared; the nanometer material and molecular imprinting polymer MIPs are modified on the surface of the electrode of a sensor by using the electrode surface modifying technology; a method for detecting trace amount of the EDCs comprises the following steps: the electrode of the molecular imprinting membrane is connected with an electrochemical working station and detects the EDCs in the environment sample extract; the electrode of the molecular imprinting membrane of the invention has strong specificity and high sensitivity which can reach ng level; a basic detection process is completed by only 1 to 2 minutes; the cost is low and the detection of one sample needs only a plurality of cents; the method for detecting the secretion in the environment by the electrode of the molecular imprinting membrane has fast and simple operation and the reaction and result are completed and recorded automatically by instruments.

The invention provides an environment-friendly water-based nano coating material used for concrete protection, and a preparation method thereof. The environment-friendly water-based nano coating material comprises 15%-65% of an organic silane coupling agent, 0.5-10% of nano silica, 0.5-5% of nano titanium dioxide, 0.4%-4% of an organosilicon oligomer, 0.3%-3% of an emulsifier, 0.1%-0.6% of a bactericidal anti-algae agent, 0.01%-0.1% of a regulator, and the balance being deionized water. The environment-friendly water-based nano coating material used for the concrete protection takes advantages of a nanometer effect of nanoparticles and a hydrophobic effect of long-chain organosilicone coupling agent. The prepared environment-friendly water-based nano coating material used for the concrete protection has excellent protection performance.

The invention relates to a spinning technology applied to a semi-continuous high-speed spinning machine with a spinning roller arranged horizontally. The spinning technology comprises glue measurement and supply, pre-spinning filtering, yarn strip forming, spinning and winding. The spinning technology aims at the specific semi-continuous high-speed spinning machine with the spinning roller arranged horizontally, under the mutual action of all processes and control of technological parameters, the spinning speed is ensured to be improved, independent walking of single yarn strips can be achieved, operations are simplified, the problems of doubling, burrs, breakage and the like are solved, the yarn strips are fully reacted and good in uniformity, the product quality is guaranteed, meanwhile, operations of workers are facilitated, and equipment maintenance is easy, overhaul costs are low, so that product costs are greatly reduced while the production efficiency is effectively improved.

The invention discloses a quantum dot molecular imprinting microsphere quartz fluorescent sensor for detecting multicomponent food additives simultaneously and a method for detecting the food additives by the quantum dot molecular imprinting microsphere quartz fluorescent sensor. A method for preparing a quantum dot molecular imprinting microsphere comb quartz plate comprises the following steps of: selecting functional monomers corresponding to the food additives; preparing quantum dots and preparing quantum dot molecular imprinting microspheres according to the literature; and modifying thesurfaces of different probes of the comb quartz plate with the imprinting microspheres of different food additives by utilizing layer-upon-layer accumulated surface modification technology. The method for detecting the trace multicomponent food additives simultaneously (which is shown as the figure) comprises the following steps of: immersing the modified quartz plate into simply-pulpified food solution, arranging the quartz plate on a sealing quartz vessel, and detecting the food additives in a sample. The quantum dot molecular imprinting microsphere quartz fluorescent sensor has high specificity and sensitivity, short detection time and low cost; and in a method for detecting pesticide residues by fluorescent light, the operation is simple and quick, and reactions and results are completed and recorded automatically by instruments.

The invention relates to a method for preparing high-purity cyclopentadiene, which comprises the following steps of: heating a thermal decomposer containing purified conduction oil and a composite inhibitor and a rectifying reboiler to a specified temperature; adding dicyclopentadiene serving as a crude product into the thermal decomposer continuously and stably; allowing the depolymerized cyclopentadiene to enter a rectifying column; extracting high-purity cyclopentadiene from a tower top, heating a small amount of dicyclopentadiene and by-products by the reboiler at the tower bottom to rectify the small amount of dicyclopentadiene and by-products again, and recycling kettle liquid. The method has the advantages of simple equipment, high production capacity, little coking and long service life of the conduction oil serving as a raw material and the equipment.

The invention relates to a method for recycling ammonian in ammonian waste water with high concentration, in particular to a method for recycling ammonian in printed wiring board waste water; crystallization mother liquid containing ammonium chloride with high concentration which is generated from processes such as producing alkaline copper chloride, Alpha crystallization type alkaline copper, blue vitriod and the like by using wiring board etching waster water, firstly is evaporated, concentrated and crystallized by one or two combination in multiple effect evaporation technique of mechanical compression, evaporating and compression with heat so as to recycle most ammonium chloride; secondly, Ph is adjusted and ammonian is evaporated so as to recycle ammonia or ammonium sulphate; ammonian waste water generated from removing tin water from ammonia and recycling tin mud are treated by evaporating ammoniac after directly adjusting Ph; and the residual sewage is further treated in the sewage treatment system. By using the method, both of the removal rates of ammonian waste water for wiring board and the recovery rate of ammonia are more than 99.8 percent; the method has good treatment effect, high efficiency, little amount of steam usage, low running cost, and good popularization and application prospect.

The invention relates to a degradable drug loading stent and a preparation method of the degradable drug loading stent. The degradable drug loading stent is characterized by comprising a skeleton structure made of a medical degradable metal or an alloy of the metal, a degradable macromolecular transition layer adhered to the surface of the skeleton structure and a drug loading layer. The degradable metal / macromolecular / drug multilayer composite stent provided by the invention has excellent mechanical property, degradable property and biocompatibility, and such drugs as taxol, taxol derivative, actinomycin D, 5-fluorouracil and sirolimus are loaded to the stent to perform active directional treatment on the focus position, so the stent is a functional degradable stent. The degradable multifunctional drug loading stent provided by the invention is suitable for interventional therapy in the blood vessel field and non-blood vessel fields and is especially suitable for interventional therapy of stenosis, obstruction or tumor of such non-blood vessel cavities as esophagus, bile duct, ductus pancreaticus, intestinal tract, urethral canal, trachea and bronchus, etc.

The invention discloses a material grinding system, comprising a feeding device, a vertical mill, a feeding device, a tube mill, a hoisting machine, a powder concentrator, a dust catcher and a blower; a gravity type grading device is arranged between the vertical mill and the tube mill; the vertical mill is not provided with a powder concentrator; the material is fed into the vertical mill through the feed device, the powder ground by the vertical mill is fed into the gravity type grading device through the feed device, powder of coarse particles is sent back to the vertical mill to be ground circularly, powder of fine particles is fed into the tube mill to be ground, the powder discharged from the tube mill is fed into the powder concentrator through the hoisting machine, fine powder is collected to be finished products by the dust catcher, and the coarse powder is sent back to the tube mill to be ground circularly. The grading device is used to simply grade the material being ground by the vertical mill with no need of energy such as electricity, pneumatic power and the like, coarse powder is sent back to the vertical mill to be ground circularly so as to reduce the vibration of the vertical mill, fine powder is fed into the tube mill to be ground to further achieve the effects of optimizing the tube mill and saving energy for grinding; the grading device is provided with a clearing device for clearing when being blocked. The material grinding system has simple process and is efficient and energy-saving.

The invention discloses a treatment process of waste water polluted by the pesticide of Dursban, and the process includes the procedures of acid eduction, complexation and extraction, Fenton oxidation and catalytic oxidation. The invention is characterized in that Dursban waste water and herbicide Pendimethalin waste water are comprehensively treated, thereby achieving the proposal of waste controlled by the waste, decreasing the load of organic pollutant being hard to be graded in the waste water, improving the biological degradability of the waste water, removing the pollutant from the waste water, and increasing the biochemical performance of the waste water. Besides, the invention has the advantages of safe and advanced technique, clean operation and low waste water treatment cost.

The invention provides a braking control system and a braking control method for a rail transport vehicle. The braking control system comprises an emergency braking request train line passing through the compartments of a railway train and local braking control units respectively arranged inside the compartments of the railway train, wherein the local braking control units are connected with the emergency braking request train line through emergency braking switches and connected with a train central control unit and a warning device through a train bus; and the local braking control units are used for monitoring the states of the emergency braking switches and sending emergency braking requests to the train central control unit and the warning device when the emergency braking switches are cut off. The braking control system and the braking control method for the rail transport vehicle, provided by the invention, can achieve the effect of controllable brake of the vehicle and ensure the safety of the train, and besides, can allow events to be traced back according to the records of the local braking control units and further can automatically identify the vehicle sending the emergency braking requests.

The present invention relates to chemical reaction process of oxidizing alcohol with oxygen to prepare aldehyde or ketone, and is especially an alcohol oxidizing process with 2, 2, 6, 6-tetramethyl piperidine nitroxide free radical as catalyst. In organic solvent, and in the presence of catalyst comprising TEMPO, sodium nitrite and transition metal salt, alcohol is oxidized to produce aldehyde or ketone. The process has the alcohol, TEMPO, sodium nitrite and transition metal salt in the weight ratio of 100 to 1-5 to 1-10 to 1-10, oxygen pressure of 0.1-0.8 MPa, reaction temperature of 0-80 deg.c and reaction time of 1-24 hr. The present invention has the advantages of mild reaction condition, easy control, low cost, high safety and environment friendship.

The invention provides a chitosan nano-microspheres product in which the average grain size of the chitosan nano microspheres is from tens of nanometers to ten micrometers and the grain size distribution coefficient C.V. is less than 20%. The invention also provides a preparation method and an application of the chitosan nano microspheres.

The present invention relates to the preparation process of natural nanometer fiber for tissue engineering, air filtering, clothing material and composite reinforced aeronautical and astronautical material, and is especially the preparation process of natural nanometer spider silk fiber and cocoon silk fiber. Through soaking in certain solution and ultrasonic dissociation, natural nanometer fiber of diameter 30-100 nm may be prepared. The prepared natural nanometer fiber may find its wide application in tissue engineering, air filtering, clothing material and composite reinforced aeronautical and astronautical material. The present invention has simple operation, simple equipment, low power consumption and low cost, and is suitable for both lab preparation and industrial production.

The invention discloses an effective stress level test device and method of a vertical prestressed reinforcement. An ARM (Advanced RISC Machines) processor is connected with an ultrasonic pulse generator; a pulse signal emitted from the ultrasonic pulse generator is transmitted to an ultrasonic transducer via a boosted circuit and a transmitter circuit; the ultrasonic transducer transmits the ultrasonic wave to a data register via a programmable filter, a programmable amplifier and an A / D (analog-to-digital) converter; collected signals are sent to a DSP (Digital Signal Processor) by the data register; the DSP stores the signals in an RAM (Random-Access Memory) storage area; the ARM processor is connected with a memory, a keyboard, a display, the programmable amplifier, the programmable filter, the RAM storage area and a temperature measurement circuit; and the temperature measurement circuit is connected with a temperature sensor. The device has the characteristics of no loss, high speed, high accuracy and low cost, especially can quantify the influence of temperature on a stress measurement result, can correct the stress level test error of the vertical prestressed reinforcement so as to obtain the effective stress level value of the vertical prestressed reinforcement with the engineering accuracy.

The invention relates to a preparation method of polystyrene / gold composite microspheres, which comprises the following steps: modifying polystyrene microspheres with a silane coupling agent, mixing with a chloroauric acid solution, and heating to carry out ionic selfassembly, wherein gold ions are fixed to the surface of the polystyrene microspheres through gold-nitrogen bonds; and after the solution is boiling, adding trisodium citrate to reduce the gold ions adsorbed onto the amino group in situ, thereby generating the core-shell structure in which a gold nanoparticle is coated on each polystyrene microsphere. The size of the gold particles and the coverage percentage of the gold particles on the polystyrene microspheres are controllable to some extent.

The invention provides a cold-working die steel material, which comprises the following trace elements in percentage by weight: 0.95 to 1.05 percent of C, 0.35 to 0.45 percent of Mn, 0.55 to 0.65 percent of Si, 7.55 to 8.5 percent of Cr, 0.45 to 0.55 percent of Mo, 0.35 to 0.45 percent of V, less than or equal to 0.025 percent of S, and less than or equal to 0.025 percent of P. The cold-working die steel material has simple technical process and easily-controlled operation, adopts alloying and modification treatment, has good hardenability, stable temper resistance, higher wear resistance and good processability, can improve work efficiency, reduce production cost, reduce or avoid moulds from breaking and cracking, and has long service life, high performance-price ratio and wide application.

The invention relates to a preparation method of a pearl hydrolysate. The method comprises the following steps of: (1) adding pearl powder in an aqueous solution of hydrochloric acid, stirring until the pearl powder and the aqueous solution of hydrochloric acid fully react, adjusting the pH value of the mixed solution with ammonia to be neutral and centrifugating to obtain a sediment (A); (2) dissolving the sediment (A) with purified water, adjusting the pH value of the solution with ammonia to be 7.5-8.5 and centrifugating to obtain a sediment (B); (3) dissolving the sediment (B) with purified water, adding enzyme for enzymolysis, centrifugating an enzyme solution to obtain a supernatant and a sediment (C), wherein the enzyme is the mixture of snail protease and pawpaw protease, and the addition of the enzyme is 0.3-1.05 percent by weight of the sediment (B); (4) dissolving the sediment (C) with purified water, adding enzyme for secondary enzymolysis, centrifugating and collecting a supernatant, wherein the enzyme is the mixture of the trypsinase, the pawpaw protease and neutral protease, and the addition of the enzyme is 0.2-0.45 percent by weight of the sediment (B); and (5) mixing the two supernatants, boiling and filtering with a nanofiltration membrane with the aperture of 1-3nm to obtain the pearl hydrolysate.