247results about How to "Reduce repulsion" patented technology

The invention discloses a complex foam extinguishing agent for a coal mine and belongs to the technical field of fire prevention and extinguishing. The extinguishing agent is prepared from the following raw materials: main materials are 40 to 60 percent aqueous solution of ammonium bicarbonate or sodium bicarbonate and concentrated sulfuric acid in a solute mass ratio of 2:1-3:1, and auxiliary materials are a stabilizer and a foamer, wherein the auxiliary materials are 0.1 to 2 percent of the total weight of the main materials. Through a test, the extinguishing agent has the foaming coefficient of 20-200 and the foam stabilizing time of more than or equal to 2.5 hours. According to the foam extinguishing agent, the foam of inert gas carbon dioxide is applied to fire prevention and extinguishing of the coal mine, and the foam is diffused in a fire area and fills a fire space, so that the oxygen concentration in the fire area is rapidly reduced, fire is extinguished due to oxygen deficiency in the fire area, temperature is reduced and a fire extinguishing effect is good. The technology also can be applied to coal bed transformation, CO2 foam is easily absorbed by coal to displace partial methane, the recovery ratio of coal seam gas is improved, and CO2 is acid to reduce the generation of secondary precipitates, so that a gas drainage effect is improved. The complex foam extinguishing agent is simple and feasible, and low in cost.

The invention provides medium-temperature and high-temperature clean fracturing fluid used under high formation temperature and a preparation method thereof. The clean fracturing fluid contains Gemini cation surfactant, amphoteric surfactant, electrolyte salt, counter-ion salt, cosolvent and water. The clean fracturing fluid of the invention is used for oil and gas field fracturing and mainly comprises 2-5 percent of surfactant, 1-4 percent of amphoteric surfactant, 1-4 percent of electrolyte, 0.05-0.15 percent of counter ion and 0.1-1.5 percent of cosolvent by weight percent. Viscoelastic fluid is formed under agitation. The invention has the advantages that the viscoelasticity of the system is high, the friction resistance is low and good sand suspending performance is kept within 90-130 DEG C.

The invention discloses a steel slag composite soil road base material and a preparation method thereof. The steel slag composite soil road base material contains the following materials in parts by weight: 0-15 parts of water, 40-80 parts of common soil, 20-60 parts of steel slag without ageing treatment, 5-25 parts of complexing agent, 1-5 parts of cement, and 0.01-0.05 part of modifying agent.The preparation method comprises the following steps: mixing the steel slag, the soil, the cement and the complexing agent and then performing a compaction test, and testing to obtain an optimal watercontent; smashing the steel slag; spraying tap water accounting for 50% of the total water amount, and sufficiently blending the steel slag with the complexing agent, to obtain a slag-powder mixture;spraying the modifying agent to the common soil and doping the redundant tap water, to obtain modified soil; blending and compacting the slag-powder mixture, the modified soil and Portland cement, toobtain a road base material. The steel slag composite soil road base material and the preparation method can sufficiently realize recycling of metallurgic solid water resource, and reduce pollution to the environment in the steel slag stacking and ageing process; also can effectively save the sandstone material, and avoid destruction of the ecological environment caused by sandstone material mining, and has remarkable economical and social benefits.

The invention provides a method for quickly detecting melamine in a milk sample based on nanogold, which aims to solve the problems of the high operation requirement, complex detection process, high cost, long time, incapacity of meeting a lot of food test requirements and the like on the detection of the melamine. The method comprises the following steps: performing pretreatment on the milk sample and adding the pretreated milk sample into a nanogold solution; and adopting visual colorimetry to compare the color of the nanogold added with the sample solution with the color in a color standard series and then qualitatively judging whether the milk contains the melamine or not. The color standard series is prepared through the following steps: adding the pretreated milk samples in an identical volume and containing the melamine of different concentrations into the nanogold solution, wherein the content of the nanogold in each sample is consistent; and after color development reaction, obtaining the color standard series. The method has the advantages of low cost, simple and convenient operation and capacity of visually and quickly detecting the melamine in the milk.

The invention provides a mobile robot path planning method and device. The method includes the following steps: obtaining a current position point of a mobile robot, a target position point and barrier area information; generating a local window according to the current position point; when it is determined that the target position point is not located in the local window, obtaining a local sub-target position point according to the obtained position points and a planning formula; obtaining a local path between the obtained position points according to the obtained position points and a path search formula and recording the local path; and when it is determined that the local sub-target position point is the target position point, displaying the local path after smoothing is performed. The invention proposes a mobile robot path planning method and device, artificial potential field path planning is decomposed into a process of searching for a local target from a plurality of local windows, when the mobile robot is very close to the target, utilization of the path search formula can weaken the action of repulsive force, so that the mobile robot arrives at the target point, and when the mobile robot is away from the target, the mobile robot is not easy to fall into a local minimum point.

The invention discloses a demulsifying and flocculating treatment method of machining cutting fluid sewage water, comprising the following steps: conveying cutting fluid sewage water in an acidification pool and adding diluted sulfuric acid for acidification; adjusting the pH to be 3.5-5.5; then conveying in a demulsifying device and adding ferrous sulfate solution for demulsification and precipitation; then conveying in a neutralization pond and adding NaOH solution for neutralization; conveying in a coagulating basin after neutralization and adding a coagulating agent for coagulation; then adding polyacrylamide to a flocculation tank; flowing down by a sieve body through the square rectifying plate of the flocculation tank after flocculating; depositing through the sloped tube stuffing body of a flocculation precipitation pool; discharging out supernatant fluid from a water collection weir; and removing precipitated sludge floccule. The method has the characteristics of integrating oil removal, demulsifying and flocculating, and being thorough for pollution control, good in application effect and economic and efficient; the effluent COD (Chemical Oxygen Demand) of cutting fluid sewage water treated through the method can be decreased to below 500mg/L; and the method can be widely applied to sewage water treatment in machining industry.

The invention provides an intelligent traffic isolation device which is characterized by comprising a plurality of automatic lifting columns, each automatic lifting column comprises an insulating box body mounted and embedded under the surface, a hollow insulating sleeve is arranged in the insulating box body and is fixedly connected with a bottom plate of the insulating box body, a lifting column body is movably sheathed inside a hollow cavity of the insulating sleeve, the bottom end of the lifting column body is an iron column, the upper end is anti-collision rubber, the outer surface of the iron column is connected with an electrified coil in a winding way, a permanent magnet corresponding to the iron column is arranged in the insulating sleeve, and a spring is connected between the bottom plate of the insulating box body and the lifting column body. When the lifting column body extends out of the surface, the iron column is positioned under the surface. The intelligent traffic isolation device provided by the invention can control and automatically regulate the quantity of lanes in the up-and-down direction and solve the road congestion problem occurring in specific time periods at a lower cost.

A rotating electric machine whose output characteristics can be easily and freely adjusted and varied even in operation. The rotating electric machine is received in a housing of an electrically driven two-wheeled vehicle. A rotating shaft is connected to a rotor so as to form an axle. A stator is positioned opposite a rotor. A movable member is connected to a rotating member rotated about the rotating shaft by a regulating motor. The movable member is moved in the axial direction of the rotating shaft by the rotation of the rotating member. This movement causes the rotor to be rotatingly moved in the axial direction o the rotating shaft, changing relative position of the rotor and the stator.

The invention discloses a breeding method of a night fluorescent pearl oyster, comprising the following steps of: uniformly mixing night fluorescent powder with epoxide resin; coating an obtained mixture on the surface of a pearl nucleus; curing, and coating methyl methacrylate as a protecting layer; treating by using a pearl nucleus adjusting agent prepared from algal polysaccharides and aureomycin; treating cell shells by using an adjusting agent prepared from shellfish meat hydrolyzate same as that for a pearl oyster (mussel), and aureomycin, and carrying out an pearl-nucleus-inserting operation; and then fostering a freshwater mussel or pearl-breeding shellfish in a recuperation pool temporarily after the pearl-nucleus-inserting operation, then placing the freshwater mussel or pearl-breeding shellfish in a breeding water area for hoisted breeding, and harvesting after maturity to obtain a pearl, namely a night fluorescent pearl. According to the breeding method of the night fluorescent pearl oyster, the problems that the traditional pearls have single kind and low added value as well as the pearl-nucleus-inserting operation has low nucleus reserving rate and great repelling force are mainly solved; the ornament and the added value of the pearls are increased; and the nucleus splitting rate and the repelling force of the pearl oyster subjected to the operation are reduced.

The invention relates to an oligomer surfactant clean fracturing fluid and a preparation method thereof. The fracturing fluid is composed of the following components in percentage by mass: 0.5-5% of oligo polyalkyl polyquaternary ammonium salt cationic surfactant, 1-5% of inorganic counter ion, 1-5% of organic counter ion, 0.5-2% of cosolvent and 83-97% of water. The preparation method comprises the following steps: preparing the oligo polyalkyl polyquaternary ammonium salt cationic surfactant, sufficiently dissolving the oligo polyalkyl polyquaternary ammonium salt cationic surfactant and cosolvent in water, adding the inorganic counter ion and organic hydrochloric acid counter ion, and stirring to obtain the oligomer surfactant clean fracturing fluid. Compared with the surfactant used by the existing viscoelastic surfactant clean fracturing fluid, the oligo polyalkyl polyquaternary ammonium salt cationic surfactant provided by the invention has the advantages of simple synthesis technique and short synthesis period.

The invention discloses an information allocation method and device, a storage medium and electronic equipment, and relates to the technical field of data processing. The information allocation methodincludes: acquiring demand information of business personnel, and generating demand characteristics of the business personnel according to the demand information; acquiring customer information, andgenerating customer characteristics according to the customer information; and allocating the customer information, which corresponds to the customer characteristics, to the business personnel, who correspond to the demand characteristics, if the customer characteristics match the demand characteristics. The method can realize an effect of accurately allocating the customer information to the appropriate business personnel.

The invention discloses controllable clay and cement seepage-proof reinforcement paste. The controllable clay and cement seepage-proof reinforcement paste is mainly prepared from clay raw stock, cement and water, wherein the clay raw stock is mainly obtained by stirring clay and water. A modifier is added in the controllable clay and cement seepage-proof reinforcement paste; the doping amount of the modifier is 1 to 3 percent; the modifier mainly comprises mineral additives, sulfate and bentonite in a mass ratio of a:b:c; and a:b:c is 5:(5-0):(0-5). The product has the advantages of high stability and water flow dilution resistance, controllable setting time, adjustable strength, high antiseepage performance, low cost, environment friendliness and the like.

The invention discloses a preparation method of a modified high-nickel ternary positive electrode material, which comprises the steps of uniformly mixing a nickel-cobalt-manganese hydroxide precursor with a lithium source and a magnesium source, and carrying out two-stage sintering to obtain a magnesium-doped ternary high-nickel positive electrode material; and dispersing the magnesium-doped ternary high-nickel positive electrode material in an organic solvent, then adding a vanadium source and a lithium source, uniformly stirring, heating, evaporating to dryness, drying, and sintering at high temperature to obtain the lithium vanadate-coated magnesium-doped high-nickel ternary positive electrode material. According to the modified high-nickel ternary positive electrode material disclosed by the invention, the cycle performance and the rate capability of the material can be synergistically improved due to the high-nickel ternary positive electrode material is subjected to double modification treatment of magnesium ion doping and fast ion conductor coating.

Provided is a device for preventing mouth opening during sleep including: an upper lip supporter configured to be firmly disposed above an upper lip; a lower lip supporter configured to be firmly disposed below a lower lip; a lower jaw supporter configured to be firmly disposed on a lower surface of a lower jaw and having a protruded fixing unit in a center part, the protruded fixing unit being protruded toward a front side of the lower jaw and bent upward forming a gentle curve along the lower jaw so that the lower jaw supporter does not move toward a neck; and a coupling medium coupling the supporters through coupling holes disposed on both sides of each supporter to maintain a shape of the device, the coupling medium hung on ears when the device is worn so that the device is firmly disposed on a face.

The invention relates to a foaming agent, specifically to a hydroxyl compound type composite foaming agent and a preparation method thereof. The hydroxyl compound type composite foaming agent at leastcomprises the following preparation raw materials in parts by weight: 2 to 20 parts of a nonionic surfactant, 1 to 5 parts of an anionic surfactant, 0.1 to 5 parts of a foam stabilizer, 0.5 to 1 partof a thickening agent and 69 to 96.4 parts of water, wherein the nonionic surfactant is one ore more selected from the group consisting of polyether polyol and lignin polyether polyol; and the anionic surfactant is one or more selected from the group consisting of a dodecyl anionic surfactant, lauryl sulfate triethanolamine, secondary alkyl sodium sulfonate, fatty alcohol sodium hydroxyethyl sulfonate, N-sodium lauroyl sarcosine, amide polyoxyethylene ether magnesium sulfate, dodecanol polyoxyethylene ether disodium sulfosuccinate, sodium alpha-olefin sulfonate, sodium fatty alcohol ether sulfate, sulfonates of ethoxylated fatty acid methyl ester, alcohol ether carboxylate, methyl stearate polyoxyethylene ether sodium sulfonate and isooctyl phosphate.

The invention discloses a processing method used for preventing whole-flour cell wall breaking of sweet potato grains, which is characterized in that sweet potato whole-flour is produced according to a backfilling method process flow, namely, the sweet potato raw material is cleaned with the mud, sand and skin removed, sliced, colour-protected, cured, cooled, backfilled to prepare the mashed potatoes, regulated, dried and grinded and screened so as to obtain the finished product; after the colour protecting step, the measures such as pre-heating, calcium dipping, braising and emulsifier adding are taken so as to reduce the wall breaking of the sweet potato cells and lead the free starch rate to be reduced to about 6%; the product has good visco-elasticity, balanced rehydration and good colour, remains the original matters such as nutrition, fragrance, and the like, to the utmost extent and approaches the mashed potatoes prepared by the fresh potatoes.

An image reading device having a recessed part which is located at a backward end with respect to a home-position of an image reading unit and extending downwardly with respect to a flat surface. When the image reading unit is located in the home-position, the recessed part receives a bent part of a flexible flat cable. With the image reading device, an upward pushing force applied to the image reading unit because of a repulsive force generated by the flexible flat cable trying to straighten itself is reduced.

The invention relates to a buffer device of a travelling crab for achieving an effective buffering function when heavy objects with various specifications are hoisted. The buffer device comprises a cart guide rail, the travelling crab and two limiting baffle plates, wherein the travelling crab is arranged on the cart guide rail, the two limiting baffle plates are arranged at the ends of two sides of the cart guide rail respectively, the travelling crab comprises a frame, wheels and a plurality of parts, the wheels are arranged on the cart guide rail and are movably linked with the frame, the plurality of parts are fixedly connected to the frame, the buffer device is arranged at the end of the frame and comprises a speed measurement device, an electric current control device, two baffle plates and a plurality of electromagnets. The buffer device can achieve the buffering function when the heavy objects with various specifications are hoisted, energy is saved and resource waste is reduced.

The invention particularly relates to a stable multilayer-film structural foaming agent and a preparation method of the stable multilayer-film structural foaming agent. The technical scheme is that the preparation method comprises steps as follows: getting 20 to 50wt% of main agent, 20 to 50wt% of assistant and 20 to 50wt% of foam stabilizer as the raw materials at 15 to 25 DEG C; then adding foam stabilizer of which the mass is 10 to 20 times that of the raw materials mentioned above; and agitating for 5 to 15 minutes, so as to obtain the stable multilayer-film structural foaming agent, wherein the main agent is one of sodium lauryl sulfate, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, alkylphenol ethoxylates and fatty alcohol-polyoxyethylene ether; the assistant is one of dodecanol, polyethylene glycol, setanol, octadecanol and lauromacrogol; and the foam stabilizer is one of sodium carboxymethylcellulose, gelatin, sodium carboxymethyl starch, arabia gum adhesive and hydroxyethyl cellulose. The preparation method has the characteristics of being simple, convenient to operate, and short in preparation time and the like; and the prepared stable multilayer-film structural foaming agent is relatively small in dimension, uniform in distribution, full in foaming and high in stability.

The invention discloses a method for preparing 3,2',6'-tri-N-acetyl gentamicin C1a, which comprises the following steps of: (1) performing coordination reaction on gentamicin C1a and zinc acetate in a methanol solvent at the temperature of between 15 and 25 DEG C to prepare a gentamicin C1a-Zn complex; (2) reducing the temperature of the system of the step (1) to between 0 and 10 DEG C, dropwise adding mixed liquid consisting of acetic anhydride, triethylamine and tetrahydrofuran with stirring for acylation reaction to prepare 3,2',6'-tri-N-acetyl gentamicin C1a-Zn complex, after dropwise adding, continuously stirring and reacting for 1 to 2 hours, and adding water and distilling under reduce pressure to prepare concentrated solution containing the 3,2',6'-tri-N-acetyl gentamicin C1a-Zn complex; and (3) performing after treatment on the concentrated solution prepared by the step (2) to prepare a 3,2',6'-tri-N-acetyl gentamicin C1a finished product. The method has the advantage of higher yield.

The invention discloses a skylight-type condom, which comprises a condom body made from elastic materials and provided with a closed end and an open end, and a reservoir tip at the top of the closed end of the condom body, wherein the condom body is divided from the middle to front a front condom body section with the closed end and a rear condom body section with the open end; the front condom body section and the rear condom body section are integrated through at least two connecting ribs; the connecting ribs and the edge of the divided part of the condom body form an exposed hole; and a blockage ring integrated with the front condom body section is arranged in the front condom body section. The skylight-type condo adopts, a simple and smart sectional design, and the front condom body section and the rear condom body section are integrated by the connecting ribs, so that a penis nerve sensitive area is maximally exposed at the local part of the condom body, and the real sexual pleasure of a man is enhanced; and meanwhile, the membrane-type blockage ring is arranged in the front condom body section, and a blockage area is formed near the closed end of the condom body and the reservoir tip, so that seminal fluid can be limited in the area and is effectively prevented from flowing backwards and leaking out.

The invention belongs to the technical field of building materials, and provides rapid hardening early strength type composite repair mortar. The rapid hardening early strength type composite repair mortar comprises, by weight, 5%-10% of water, 20%-30% of cement, 1%-5% of silica fume, 1%-5% of fly ash, 50%-70% of quartz sand, 0.4%-0.5% of composite early strength agents, 0.06%-0.1% of water reducing agents, 1%-5% of gelatin powder and 0.06%-0.8% of hybrid fibers. The composite early strength agents comprise components A and components B, the components A are nanometer calcium carbonate whiskers, the components B are mixtures of triisopropanolamine and aluminum sulfate, the quartz sand comprises coarse sand, medium sand and fine sand, and the hybrid fibers include basalt fibers and polypropylene fibers. The rapid hardening early strength type composite repair mortar has the advantage that the problems of strength decreasing, high dry shrinkage and low bonding strength of repair mortar in the prior art can be solved by the aid of the rapid hardening early strength type composite repair mortar.

The invention discloses an energy control system in an ultrasonic emulsification operation, which comprises an ultrasonic electric generator, an ultrasonic emulsification handle and an ultrasonic emulsification needle. The ultrasonic emulsification handle is connected with a suction pipeline; the suction pipeline is provided with a vacuum generation device and a controller; the controller is connected to the ultrasonic electric generator by a signal wire; the controller comprises a sensor, a comparator and a control unit; the sensor is used for sensing a pressure or flow in the suction pipeline; the comparator is used for comparing an actually measured value with a built-in standard value; the control unit is used for controlling start or shutdown, improvement or reduction of the output of ultrasonic energy. The energy control system has the beneficial effects that the output of the ultrasonic energy can be automatically started or shut down and improved or reduced by the blocking condition of the needle according to the hardness state, the crushing degree and the like of cataract, however, a suction function is continuously kept, so that the ultrasonic energy is acted on the cataract most effectively to the lowest extent.

The invention provides a sugar-coating removing device used for medicine detection and liftable based on magnetic force. The sugar-coating removing device comprises a base, wherein a mounting shell ismounted on the upper surface of the base; a cavity is arranged inside the mounting shell; a plurality of grinding discs are fixed on the upper surface of the mounting shell; each grinding disc is inthe shape of a screen mesh; the upper surfaces of the grinding discs are matched with the radians of tablets; the upper surfaces of the grinding discs are provided with a plurality of scrapers; the right side of the base is provided with an adsorption box; and the adsorption box is communicated with the mounting shell through a first exhaust column. The sugar-coating removing device of the invention has the following beneficial effects: the scrapers on the upper surfaces of the grinding discs can effectively remove sugar-coatings on the lower surfaces of tablets, and the sugar-coatings removedby the scrapers are conveyed into the cavity under the action of internal and external air pressure, so the scattering of the sugar-coatings is avoided; a part of sugar-coating powder is brought intothe adsorption box by a first induced draft fan and adsorbed by water; and the function of removing sugar-coatings on a plurality of tablets at a time is realized through gear transmission, so removal efficiency is greatly improved.

The invention discloses a local traffic flow optimization system based on a multi-vehicle longitudinal car-following state. The method comprises steps of firstly, using the least square method to identity driver character parameters; dividing drivers into aggressive, steady and conservative types; calibrating driving behaviors of the steady type drivers to be good car-following parameters; then, through dichotomy method, acquiring the degree that drivers accept suggestions and reminding drivers to improve the car-following behaviors; and guiding drivers to develop good driving habits step by step. According to the invention, based on drivers with different characters and different car-following styles, driving suggestion degrees that special drivers can accept are provided; drivers are advised to keep normal driving; by improving driving behaviors of drivers in the micro level, traffic flows in local regions are optimized in the macro level.