52results about How to "Expensive to resolve" patented technology

The invention discloses a flame-retardant polyacrylate emulsion and a preparation method thereof. The flame-retardant polyacrylate emulsion consists of 100 parts of polyacrylate emulsion and 5-35 parts of flame retardant by weight parts, wherein the polyacrylate emulsion consists of ethylhexyl acrylate, butyl acrylate, methyl methacrylate, methacrylic acid, crylic acid, functional monomer, reaction emulsifier, emulsifier OP, ammonium persulfate and deionized water; the flame retardant consists of carbonized catalyst, carbonizer and expanding agent. The preparation method of the flame-retardant polyacrylate emulsion includes: utilizing the combined process of pre-emulsifying and seeding polymerizing and adding expansion flame retardant. The flame-retardant polyacrylate emulsion prepared by the preparation method has excellent flame retardancy, adhesivity, filming ability and stability and excellent waterproofness, and can be widely used in the industries of adhesives and coatings and the like.

The present invention discloses a moving body tracking method and system. The method comprises the following steps: receiving sound signals; receiving video signals; calculating the included angle of the relative distance of the sound source and the system and the positive direction of the sound source and the system, and determining whether the sound source is located in the camera range of a camera; if a robot is in a static state, employing a three-frame difference method to obtain the movement area of the current frame, detecting whether there is a body in the movement area, and emitting an action instruction according to a followed person's size and position at the current video frame; and if the robot is moving, predicting the followed person's movement area at the current frame, performing body identification in the prediction movement area, and emitting an action instruction according to the followed person's size and position at the current video frame. The moving body tracking method and system are able to effectively detect a followed person's position in the field of an autonomous mobile robot platform camera so as to solve the problem that the tracking is failed when the followed person's partial body is shielded, effectively realize the tracking of the followed person movement and reduce the cost.

The present invention relates to a radiating method of a LED lamp of an air convection bin. The present invention is characterized in that an air convection bin and an air convection channel are arranged around a circuit board, a power source and a constant current source in a LED lamp casing body; the air convection bin is composed of radiating plates and the air convection channel is composed of the radiating plate and the casing body, a ventilation hole is arranged on the radiating plate, a matched air input hole and an air output hole are arranged on the casing body, the radiating structure which is formed by the radiating plate and the radiating slice is arranged in the air convection bin and at the periphery of the air convection bin, cold air current can enter into the casing body, the heat produced by the circuit board, the power and the constant current source during working is brought out of the casing body by the cold air current which passes through the air convection bin and the air current channel and passes through the cold-hot exchange of the cooling plate and the cooling slice, achieving the purpose of cooling; the air convection bin can carry away 25 percent heat in the casing body, thereby removing the accumulate effect of the heat during the LED lamp luminescence, and effectively solving the problems that the cooling of the high-power LED lamp is difficult, the cast is expensive and the LED lamp can not be commonly used.

The invention belongs to the field of drug synthesis and relates to an entecavir compound and a synthetic method of an intermediate of the entecavir compound. The novel synthetic method comprises: by taking (S)-3-hydroxyl dimethyl adipate as an initial raw material, preparing an intermediate 9 through hydroxyl TBS protection, Dieckmann condensation reaction, ketone protection to ketal, ester group reduction to hydroxyl, hydroxyl protection, deprotection, ketone to silyl enol ether and Rubottom oxidizing reaction; and preparing entecavir from the intermediate 9 through wittig reaction, Mitsunobu reaction, silicon preventing radical group removal and basic hydrolysis. The novel synthetic method provided by the invention is mild and easily controllable in reaction condition, simple to operate, high in product yield, high in purity and suitable for industrialized mass production.

The invention discloses a full-automatic online PCB jet printing system and method. The full-automatic online PCB jet printing system comprises a base board conveying device, a controller and a PCB jet printing device, wherein the base board conveying device comprises a bracket, a conveying motor, a board incoming sensor, a board outgoing sensor, a moving rail, a fixed rail, a rail width adjusting motor and a positioning mechanism; the conveying motor and the rail width adjusting motor are arranged on the bracket; the rail width adjusting motor is connected with the moving rail; the board incoming sensor is arranged at one end of the bracket, and the board outgoing sensor is arranged at the other end of the bracket; the positioning mechanism is arranged on the bracket; the PCB jet printing device comprises a supporting mechanism, a CCD and a jet printing mechanism; the CCD and the jet printing mechanism are arranged on the supporting mechanism; the conveying motor, the board incoming sensor, the board outgoing sensor, the rail width adjusting motor, the CCD and the jet printing mechanism are electrically connected with the controller. The full-automatic online PCB jet printing mechanism can solve the problems of prone falling off, high cost and poor compatibility with a new system.

The invention relates to a method for producing an electrical contact material, particularly relates to a method for producing a high-energy rare earth powder alloy electrical contact material. According to the technical scheme provided by the invention, the method for producing a high-energy rare earth powder alloy electrical contact material is characterized by comprising the following steps of: firstly, completely mixing and stirring alumina powder, silver powder, lanthanum powder, graphite powder, molybdenum powder, yttrium powder, boron powder and nickel copper powder; secondly, using anoil press to squeeze and mold the powder, and then sintering the squeezed and molded object into a vacuum high-temperature furnace and then cooling; thirdly, burning the molded object in a high-temperature furnace, then taking out and squeezing the burnt object into a panel shape by using a die on the oil press, and then cooling with cold water, and finally using a machine tool to punch the cooled object into a contact. The invention overcomes disadvantages of the prior art and provides the method for producing an environment-friendly high-energy rare earth powder alloy electrical contact material with low silver content, impact resistance, corrosion resistance, antioxidation, low resistance and good electrical conductivity.

The present invention relates to building engineering leak preventing and stopping technology, and is especially leak preventing and stopping method and material. The method is to utilize kelp with natural foaming performance in stopping leakage of building engineering and building. The leak stopping material consists of kelp 30-70 wt%, flyash 5-20 wt%, gypsum powder 5-20 wt%, standard cement 5-20 wt% and other admixture 0-20 wt%. The present invention has the advantages of low cost, simple composition, no damage to soil layer and no pollution on underground water resource.

The invention provides a thermal barrier coating with a MCrAlY bottom layer compact in structure and large in roughness according to requirements of gas turbine blades for low-cost and long-service-life thermal barrier coatings. The specific implementation process includes the steps that 1, a supersonic spraying method is adopted to prepare a MCrAlY compact layer with the thickness of 0.07-0.15 mmon the surface of a part; 2, the supersonic spraying method is adopted to prepare a MCrAlY rough layer with the thickness of 0.05-0.07 mm on the surface of the part; 3, the part where the coatings are sprayed is subjected to vacuum heat treatment, wherein the heat treatment temperature is 1050+/-10 DEG C, heat preservation is carried out for 3+/-0.5 h, and the blades are cooled to 200 DEG C or below along with a furnace, cooled to 80 DEG C or below by introducing argon and then taken out of the furnace; and 4, an atmospheric plasma spraying method is adopted to prepare a YSZ ceramic surface layer with the thickness of 0.20-0.50 mm on the surface of the part. The thermal barrier coating has the advantages of being good in oxidation corrosion resistance, high in interface bonding strength and the like, and the requirements of the gas turbine blades for the low-cost and long-service-life thermal barrier coatings are met.

The invention discloses a blockchain consensus method and system based on deep learning model training. The system comprises a parameter and data acquirer, a consensus algorithm scheduler, a deep learning model trainer and a consensus verifier. The method can be in butt joint with an existing block chain system, and POW/POS/POA and other consensus algorithms are replaced. According to the invention, the excess computing power of the block chain is introduced into deep learning model training, and through the excitation mechanism of the block chain, the investor can use the mining machine for training the artificial intelligence model, the investment of funds, computing power and energy can be guided into more meaningful work, and the problems of insufficient computing power and high cost are solved. The POW computing power of the block chain is used for deep learning model training calculation of big data, the cost is reduced, social resources are saved, and the computing power is usedfor meaningful work.

A preparation method of a fast high-sensitivity photonic crystal humidity sensor is provided, and the invention relates to a preparation method of a humidity sensor. The purpose of the invention is to solve the problems of expensive cost, poor parallel stability, poor mechanical properties of sensor devices and the complex operation of humidity sensors. According to the fast high-sensitivity photonic crystal humidity sensor, a colloidal assembly solution is fixed on a base material. The preparation method of the humidity sensor is as below: 1, treatment of the base material; 2, preparation of the assembly solution; and 3, preparation of the fast high-sensitivity photonic crystal humidity sensor. The humidity sensor prepared by the invention solves the problem of high cost of the traditional humidity sensors, and has superhigh parallel stability and high mechanical properties. The humidity sensor of the present invention is applied to the field of high-sensitivity sensors.

The invention discloses a file storage method and device, equipment and a storage medium. The method comprises the steps of obtaining at least one source file input by a user, the type of the source file and the name of the source file; determining a first target address according to the type of the source file; and storing the source file to the first target address. Through the method of the invention, ultra-lightweight data of individuals or small teams can be stored and processed, a storage mode of combining a database and local storage is used, a server does not need to be purchased additionally for distributed storage, the operation can be completed at a user client, and the method is flexible, convenient and low in cost.

The invention provides a deicing system. The deicing cylinder is located at the upper end of the base and is specifically fixed on the upper end of the lifting cylinder. Foreign matter blocking nets are distributed on both end surfaces of the deicing cylinder, and the left side of the deicing cylinder passes through the deicing fluid. The delivery pipe is connected with the liquid storage cylinder, the liquid storage cylinder is provided with a visual window, the driving motor and the rotating blade are installed together, the left side of the driving motor is installed with a filter screen, and the lower end of the filter screen is installed with a water tank, and the water tank is attached It is arranged with the inner wall of the deicing cylinder, and the fixing of the deicing cylinder is realized by setting lifting cylinders of different volumes. In addition, the design of the pulley realizes the movement of the base, which in turn facilitates the movement. The design of the visible window is convenient for the staff to evaluate the deicing effect within a unit time. There are multi-layer filters inside the deicing cylinder. This design enables the fog to fit the filter to condense into water droplets, thereby realizing the removal of fog. This design solves the problem of high cost of traditional deicing devices.

The invention discloses a delustering and paper removing additive for a heat transfer printing powder coating. The delustering and paper removing additive comprises acrylic resin and dodecanedioic acid, wherein the acrylic resin accounts for 50-95% of the total amount of the additive, and the dodecanedioic acid accounts for 5-20% of the total amount of the additive. The paper removing additive provided by the invention can solve the problems of difficult paper removing in a beta-hydroxyalkylamide (HAA) system and high cost of the existing polyurethane polyester powder at present, also has an extinction effect, and can be used as an extinction auxiliary agent in the beta-hydroxyalkylamide (HAA) system at the same time.

The invention discloses a supported bimetallic active phase catalyst and a synthesis method and application thereof.The bimetallic Au-K/ZSM-5 catalyst is synthesized by doping alkali metal, the charge state of an Au active phase is regulated and controlled by means of the specific electronic modulation function of alkali metal K, the Au active phase is converted into a high-reactivity cation state, and electron transfer between the molecular sieve carrier and precious metal is accelerated; and a large number of surface hydroxyl groups introduced through alkali metal doping cause oxygen specific coordination, K < + > and Au < + > are initiated to be associated with nearby-O,-OH and H2O, a stable [Au-O (OH) x-K] active interface is formed, and the supported bimetallic catalytic material with high reactivity is obtained. The catalytic material prepared by the invention has highly dispersed bimetallic active sites and shows excellent volatile oxygen-containing hydrocarbon low-temperature purification capacity. Meanwhile, the catalyst disclosed by the invention is simple in synthesis method, low in raw material price and good in industrial application prospect.

The invention discloses an air drum set, comprising a motion capture assembly, a Bluetooth sound source, a sound production device and a sound output device, wherein 2.4 G wireless transmission is adopted between the 2.4 G motion capture assembly and the sound production device; the 2.4 G Bluetooth sound source is in Bluetooth transmission connection with the sound production device; the 2.4 G sound production equipment is connected with the output device through aux; the 2.4 G motion capture assembly comprises left and right drumsticks (1) and left and right pedals (2); a 2.4 G geomagnetic sensor N5 and a first six-axis gyroscope sensor N6 form first position identification; and a second 2.4 G six-axis gyroscope sensor N6 is set for second position identification. The air drum set provided by the invention is convenient to carry and use, does not need a special power supply to supply power, and free of inconvenience in use due to a connecting line, so the use cost of the air drum set is greatly reduced, and the inherent defects of a traditional drum set in the aspects of volume, cost, portability, site limitation and the like are overcome in a breakthrough manner. The air drum set is not limited by sites, is low in price and convenient to carry, perfectly replaces the traditional drum set, and makes a huge technical breakthrough.

The invention relates to the technical field of water treatment, and particularly discloses a stainless steel cold-rolled acid wastewater denitrification treatment process. The process comprises the following steps of 1) lime neutralization, 2) primary coagulation and sedimentation, 3) softening reacting, 4) secondary coagulation and sedimentation, 5) pH adjustment, 6) biological denitrification,7) biochemical precipitation and 8) alkalinity reflux. The problem that in an existing stainless steel cold-rolled acid wastewater denitrification treatment process, a large number of softening agentsare added, so that the wastewater treatment agent cost is high is solved. Accordingly, by making biological denitrification effluent flow back to front-end softening treatment, a large amount of alkalinity generated through a biological denitrification reaction performed by means of high-concentration nitrate nitrogen in stainless steel cold-rolled acid wastewater reacts with excessively added calcium ions in the wastewater to form calcium carbonate precipitation, in the whole softening process, a large number of softening agents do not need to be additionally added, and the stainless steel cold-rolled acid wastewater treatment agent cost can be greatly reduced.

The embodiment of the invention discloses degradable cassava acetate starch, resin thereof, and preparation and application of the degradable cassava acetate starch and the resin, which relate to thefields of high polymer materials, thin film products, plastic products, plastic coated products, molded products, packaging materials, printing materials, electronic information industry film materials and the like. The resin comprises cassava acetate starch, polyvinyl alcohol, a plasticizer, a stabilizer, a degradation agent, a cross-linking agent and a lubricant. The degradable cassava acetate starch resin disclosed by the embodiment of the invention has good processing mechanical properties, high breaking strength and tensile strength, strong water barrier property and excellent heat resistance, the biodegradability is greater than 70%, and the degradable cassava acetate starch resin is eco-friendly, so that the problem that plastic product wastes pollute the environment is solved; earth forest resources are saved, paper is replaced for printing and packaging, expensive PLA polylactic acid is replaced, the production process is simple, the cost is low, and great significance is achieved for research and application of environment-friendly degradable materials in the new technology.

The invention discloses a preparation method of a TiAl-base alloy. The preparation method is characterized by comprising the following steps: (1) evenly mixing TiAl3 powder with the granularity of 300 meshes and Ti powder with the granularity of 500 meshes at a mass ratio of (1:2)-(1:5); (2) performing cold pressing on the mixture under a pressure of 800MPa so as to obtain billets and encapsulating the billets into a low-carbon steel sleeve when the vacuum degree is 5*10<-2>Pa; (3) heating the cold-pressed billets with the low-carbon steel sleeve to 1050-1250 DEG C at a heating speed of 50 DEG C/min, and putting the cold-pressed billets with the low-carbon steel sleeve into a mold to extrude and form after carrying out heat preservation for 30-60 minutes. The preparation method is simple in process and low in cost; the problem of high cost of a pre-alloying method is solved; meanwhile, the problem of volume expansion when the TiAl alloy is prepared from Ti and Al elements by a powder method is avoided; the TiAl-base alloy with high compactness and even and fine tissue can be obtained.

The invention relates to a traditional Chinese medicine composition for treating lithangiuria and a preparation method thereof. Each dosage of the medicine os prepared from the following raw materials: 18-22g of Polygonum cuspidatum, 28-32g of desmodium, 8-12g of pyrrosia lingua, 13-18g of Lygodium japonicum, 12-17g of radices cyathulae, 10-15g of the seed of cowherb, 8-12g of liquidambar fruit, 8-12g of fructus aurantii immaturus, 18-22g of talc, 9-11g of radices paeoniae alba, 13-18g of chingma abutilon seed, 14-16g of fructus polygoni orientalis, 19-20g of herba lycopi, 7-8g of curcuma rhizome, 5-7g of agilawood and 13-17g of radix clematidis. The above medicines in compatibility complement each other, can effectively treat lithangiuri; pure traditional Chinese medicines are employed to fundamentally condition the body and remove the root causes of lithangiuria, and then treat lithangiuria fundamentally; and composition does not cause side effects, overcomes the shortcomings of high price, long recovery period, severe harm to individual in existing surgical treatment for lithangiuria, and has the advantages of pure traditional Chinese medicines, no side effects, rapid effectiveness, simultaneous treatment of principal and subordinate symptoms, low cost, replacement of surgery, reduction of the harm to individual patient, short recovery period and no relapse.

An improved, cost effective process for the preparation of Lacosamide is disclosed. A novel intermediate of formula (IV) and a process for preparation of the novel intermediate is also disclosed.

wherein, X is halogen.

The invention provides a clamping mechanism. The clamping mechanism comprises a supporting part, a first clamping arm, a second clamping arm, a first sliding assembly, a second sliding assembly and anelastic assembly, wherein the first clamping arm and the second clamping arm are rotatably installed on the supporting part; the first sliding assembly is slidably arranged on the supporting part inthe first direction, the first clamping arm is hinged to the first sliding assembly, and the first sliding assembly is arranged in the second direction in a shaking mode relative to the supporting part; the second sliding assembly is slidably arranged on the supporting part in the first direction, the second clamping arm is hinged to the second sliding assembly, and the second sliding assembly isarranged in the second direction in a shaking mode relative to the supporting part; and the elastic assembly is arranged in the first direction in a telescopic mode, one end of the elastic assembly isconnected with the first sliding assembly, and the other end of the elastic assembly is connected with the second sliding assembly, wherein the first direction is perpendicular to the second direction. According to the clamping mechanism, the problem of high cost of a clamping mechanism in the prior art is solved.

The invention discloses a water gushing cooling direct cooling air conditioning system for a mine. The water gushing cooling direct cooling air conditioning system structurally comprises a refrigerating machine, a refrigerating machine cooling system and an air cooling system which are mounted in the mine. The refrigerating machine comprises a condenser, a compressor and a throttling device; the refrigerating machine cooling system comprises a gushing water collector, a desander and a water outlet of a water pump condenser; and the air cooling system comprises an evaporator set, an evaporatorshell, a reducer union and an air feeder. The system can effectively solve the problem of high cost caused by complex design, is simple and reasonable in structural design, low in cost and high in efficiency, is a technical innovation of one-time expansibility of the prior art, and has good popularization and use values.