108results about How to "Effective introduction" patented technology

The invention discloses a preparation method of titanium alloy powder for 3D printing, and belongs to the technical field of 3D printing / material additive manufacturing. The method comprises the specific steps that raw materials are loaded and clamped after being treated; pre-vacuum-pumping treatment is carried out on a smelting chamber and an atomization furnace, and high-purity argon is introduced into the smelting chamber and the atomization furnace when the vacuum degree reaches 10<-5>-10<-3> Pa; a gate valve is opened, a feeding mechanism is turned on, and bar materials are heated at the temperature of 1550-1700 DEG C; metal molten drop or liquid flow is atomized through a supersonic speed tight coupling gas atomization nozzle, and finally screening is carried out. The preparation method has the advantages that impurities introduced in the smelting and atomization process can be effectively reduced, and it is ensured that power oxygen content is controlled to be below 200 ppm; continuous production can be carried out after bar materials are replaced, and the powder is uniform in granularity, good in degree of sphericity and good in flowability.

The invention relates to a pre-dispersing masterbatch particle of liquid rubber chemicals and a preparation method thereof. The compound comprises a first pre-mixture, a second pre-mixture and an optional processing agent, wherein the first pre-mixture comprises a liquid vulcanizing agent and white carbon black; the second pre-mixture comprises rubber base materials, EVA (ethylene vinyl acetate) resins, a lubricant, a dispersing agent, processing oil and an inorganic filler; and the optional processing agent comprises a lubricant, processing oil and a coupling agent. The invention also relates to a preparation method of the pre-dispersing masterbatch particle of the liquid rubber chemicals. The process is simple, and the product dispersibility is good, thus the method is beneficial to theabsorption in the blending process and ensures the optimum activity of the effective components, the blending time is reduced, and the defects of delaying the blending process caused by the differentpolarities of the liquid assistant and rubbers.

The invention discloses an air conditioner which comprises a machine shell and a heat exchange device, wherein the machine shell is provided with an air outlet; the machine shell is internally provided with a heat exchange air duct and a fresh air duct; an outlet of the heat exchange air duct and an outlet of the fresh air duct are both formed in the air outlet, so that out-flowing air of the fresh air duct and out-flowing air of the heat exchange air duct are mixed on the inner side of the air outlet and are jointly sent out through the air outlet; and the heat exchange device is arranged inthe machine shell and exchanges heat with air flow flowing into the heat exchange air duct. The air conditioner has good cooling and heating effects, the user experience comfort degree is improved, and the processing procedure of the machine shell is simplified.

The invention relates to a preparation method for heteratom-containing ordered mesoporous carbon with high specific capacitance. The method comprises: melting phenol; adding a catalyst; uniformly stirring, and adding an aqueous solution of formaldehyde; carrying out a reaction for 10-60 minutes at a temperature of 65-90 DEG C; adding a heteroatom compound; continuously carrying out the reaction for 10-60 minutes, and stopping the stirring; adjusting the pH value of the solution to more than or equal to 7.0; carrying out decompression dehydration to obtain a resin; dissolving the resulting resin in an organic solvent to obtain a uniformly heteratom-containing phenol formaldehyde resin solution; dissolving a block copolymer in a solvent to form a uniform solution; adding an oligomer of silicon to the resulting uniform solution, and stirring for 0.5-4 hours; then adding the resulting solution to the heteratom-containing phenol formaldehyde resin solution; uniformly stirring, and volatilizing the solvent for 6-18 hours; curing for 6-48 hours; carrying out carbonization for 0.1-3 hours at a temperature of 600-1200 DEG C under inert atmosphere; adopting hydrofluoric acid or a concentrated alkali solution to treat the carbonized sample, removing the silicon, washing and drying to obtain the heteratom-containing ordered mesoporous carbon. The method of the present invention has advantages of simple process and low cost, and the produced carbon has high specific capacitance.

The invention discloses a multifunctional adjustable monkey chair, comprising a chair space surrounded by a lateral plate, a front plate and a back plate and allowing an experimental animal entering inside, and an upper plate and a head fixing plate installed above the chair space, wherein a plurality of fixing grooves are installed on the inner side of the lateral plate, and a groove is opened on the inner side of the fixing groove for installing matched plug-in units; and a rotary fixed element is installed on the outer side of the lateral plate and connected with a positioning rack for adjusting the position of the positioning rack. The monkey chair can be adjusted according to experimental conditions; and is suitable for scientific experiments on primates with different ages and shapes. The inventive monkey chair has the advantages of good commonality and convenient installation.

The invention aims to provide a chimney structure capable of preventing carbon dioxide causing global warming from being exhausted into the atmosphere, wherein: a porous stack is disposed in a pipe body having a base end communicating with a combustion chamber. In addition, the pipe body is formed by bending it in an inverted U-shape, and a porous stack is disposed in the combustion gas flow path.

The invention relates to a micro-displacement positioning platform with three-stage amplifying mechanisms. The micro-displacement positioning platform comprises a fixed frame, a displacement input platform, a motion input mechanism, two sets of first-grade lever mechanisms, two sets of second-grade lever mechanisms and a semi-axle amplifying mechanism; the two sets of first-grade lever mechanisms and the two sets of second-grade lever mechanisms are symmetrical; fulcrums of the first-grade lever mechanisms and the second-grade lever mechanisms are both in transmission connection with the fixed frame; two ends of the motion input mechanism are respectively connected with the fixed frame and the displacement input platform; input ends of the two sets of first-grade lever mechanisms are respectively in transmission connection with the displacement input platform, and output ends are respectively in transmission connection with input ends of the corresponding second-grade lever mechanisms; and the semi-axle amplifying mechanism is connected between the output ends of the two sets of second-grade lever mechanisms. The micro-displacement positioning platform depends on compound serial connection of two stages of lever mechanisms and one stage of bridge mechanisms to solve such problems as low displacement-amplification ratio and parasitic displacement in the prior art so as to realize wide-range precise positioning of a motion platform.

A vertical shaft impact crusher comprises a rotor for accelerating a first flow of material to be crushed, a first feed means for feeding the first flow of material to the rotor, a housing against which the accelerated first flow of material may be crushed, and a second feed means for feeding a second flow of material to be crushed into the path of the accelerated first flow of material. The second feed means comprises an inner hopper (8) and an outer hopper (10). An outlet (14) is formed in said inner hopper (8) for allowing said second flow of material to enter a space (12) formed between said inner and outer hoppers (8, 10). A slide plate (36) is located in said space (12) adjacent to the outlet (14), the slide plate (36) being inclined in a direction being substantially tangential in relation to the rotor.

The invention discloses an engine intake and exhaust control system and method. The engine intake and exhaust control system comprises an engine ECU, a gas circuit control valve and a double-effect pump. An exhaust gas bypass valve is arranged between an exhaust manifold and an exhaust pipe. The gas circuit control valve is connected with four gas circuits which are an EGR inlet pipe connected with the exhaust pipe, a bidirectional circulating pipe connected with an air inlet pipe, an intake branch pipe connected with an intake manifold and a pressurization gas pipe connected with the double-effect pump. The other end of the double-effect pump is connected with the intake branch pipe. On one hand, the double-effect pump serves as an EGR pump, enhances the capacity for introducing EGR exhaust gas and achieves stable adjustment of EGR within a whole working condition range; one the other hand, the double-effect pump serves as an electric air pressurizer, pressurizes air quickly and improves transient state response performance of an intake system. On-off conversion and control functions of the gas circuits are achieved through the gas circuit control valve, different requirements of an engine for recirculation exhaust gas or fresh air are met, and optimal power performance and exhaust performance are achieved.

The invention discloses a character interest extraction method based on a long text. The method comprises the steps of S1, text preprocessing; S2, respectively extracting keywords of the same text from the text processed in the step S1 by adopting TextRank and RAKE; S3, predicting the text processed in the step S1 by adopting the trained LDA model to obtain a text topic distribution condition; S4,adopting a trained Word2Vec model for each keyword extracted in the step S2, and converting the Word2Vec model into a word vector; Adding the word vectors corresponding to the keywords into the textfeature vectors; S5, adding the text topic distribution condition obtained in the step S3 into the text feature vector obtained in the step S4; S6, extracting a character interest classification result in the text by adopting the trained binary classification support vector machine; According to the method, the final extraction result accuracy can be effectively improved.

The invention provides a preparation method for nitrogen defect modified inverse opal structure carbon nitride. In the method, a silica template, a carbon nitride precursor and a nitrogen defect forming agent are mixed and ground by a hard template method, calcined in an inert atmosphere, and then etched by an etchant to obtain nitrogen defect modified inverse opal structure carbon nitride. The method provided by the invention can introduce nitrogen defects and significantly improve activity while ensuring the inverse opal structure, prepared defect-rich catalyst has excellent photoelectric properties, and the catalyst applied to photocatalytic degradation of antibiotics shows very high catalytic activity. The material also has a good application prospect in photocatalysis fields of photocatalytic hydrogen production, reduction of CO2, production of H2O2 and the like.

The invention relates to gel electrolyte capable of improving cathode material electrode / electrolyte interface stability, a preparation method and a lithium battery. The preparation method comprises the following steps: stirring and dissolving electrolyte matrix materials and cellulose acetate into an organic solvent to obtain uniform slurry, and preparing the slurry into a polymer film by adopting an electrospinning method; infiltrating the polymer film with a mixed solvent of ethanol and water, then soaking in sodium alginate aqueous solution, then taking out and drying, thus an SA modifiedpolymer film is obtained; and soaking the SA modified polymer film in liquid electrolyte for 4-24 hours, thus the gel electrolyte is obtained. When the gel electrolyte is adopted for producing the lithium battery, the aims of stabilizing an electrode structure and improving cycling stability of the battery can be achieved.

The invention is applicable to the field of digital transmission, and provides an advertising transmission method and a system. The method comprises the following steps: downloading advertising data through an external network; and transmitting the advertising data to a subscriber terminal device according to the interval time of playing media contents when a user downloads and watches the media contents through a household in-house network. In the embodiment of the invention, the advertising data correlated to the media contents downloaded and watched by the user is downloaded to a personal computer end; and when advertising transmission is required to be conducted, advertisings are sent to a terminal device through the household in-house network to construct an instantaneous advertisingdownload and releasing mode taking a personal computer as a core, so that the advertisings are effectively introduced into a household, and the value of the terminal device is improved.

The invention relates to a method for feeding in and starting a thread in a false twist texturing device. Said device has a heat exchanger (1) containing a fluid. Said heat exchanger has at least two yarn passages (4, 5, 6) which are provided for guiding the yarn through and for sealing the heat exchanger (1). Said yarn passages (4, 5, 6) are enlarged for introducing the yarn. Alternatively, the yarn is drawn through the yarn passages (4, 5, 6) by suction and / or blown through by means of an auxiliary airflow or pulled through by means of an awl. The heat exchanger (1) in the false twist texturing device pertaining to this method is divided along the direction of passage of the yarn and the parts (2, 3) for introducing the yarn into the heat exchanger can be removed from each other. Alternatively, an injector nozzle (37) is arranged before and / or after the individual yarn passages (4, 5, 6) on the yarn inlet (4) and / or on the yarn outlet (5) for guiding the yarn through the yarn passage.

The cellular automaton method for simulating anisotropic silicon-etching process meets the following two conditions. The first condition is to adopt the crystal lattice structure of silicon as that of cellular automaton, introduce more crystal face appeared in the anisotropic silicon-etching process to the substrate surface layer and affect the etching process of inner substrate cells with the crystal face appeared in the surface substrate layer cell etching process. The second condition is that the determination of the surface layer cell boundary condition during the surface substrate layer cell etching process depends only on the surface layer cells, resulting in reduced considered cell number, high precision and fast simulating speed. The present invention has the advantages of fast operation speed and high precision and possesses practical significance in realizing the fast precise simulation of anisotropic silicon-etching process.

The invention discloses a solar aerator with high stability. The solar aerator with high stability comprises a damping plate, damping rubber pads, a sleeve, a damping spring, a loop bar and a dampingrubber seat, wherein the damping rubber pads are separately attached to the upper surface and the lower surface of the damping plate; the bottom end of the inside of the damping plate is welded to thesleeve; the damping spring is mounted in the sleeve; the loop bar is inserted in the top end of the inside of the sleeve; and the damping rubber seat is attached to the top end of the loop bar. The solar aerator with high stability is scientific and reasonable in structure and safe and convenient to use, and is provided with the damping plate, the damping rubber pads, the sleeve, the damping spring, the loop bar and the damping rubber seat, in a working process of the driving motor, the damping spring is extruded by the loop bar, influences of vibration generated in the working process of thedriving motor to a whole floating bed can be relieved effectively, the stability of the floating bed on the water surface can be improved effectively, the circumstance that the floating bed is inclined and then falls can be prevented effectively, and the service life of the solar aerator is prolonged.

The invention discloses a laser celestial globe which takes a diode as a basic light source to generate starry sky images and can carry out starry sky effect demonstration indoors in any lighting condition because of adopting a special point light source. Because of miniaturization of a dome and foldable type, the invention can carry out demonstration in places with common space, such as classrooms, laboratories, and the like. A constellation projection device has special mechanical design, a constellation projection ball is driven by an engine to simulate the rotation of starry sky and a projection star map can be regulated according to latitude to dynamically demonstrate the position change of stars, thereby the invention can satisfy the demands that people in different latitude areas can study the relation between starry sky apparent motion change and earth rotation and greatly satisfies the scientific inquiry desire of observers. Due to the specialization of the light source, no need for avoiding light in a demonstration environment, miniaturization, the foldable design of the dome and the low manufacturing cost, the invention is very easy to truly popularize astronomy popular science education in common middle and primary schools.

An impurity introducing method is provided for shallowly and efficiently introducing an impurity. The method includes a first step of making a surface of a semiconductor layer amorphous by using plasma composed of electrically inactive particles in the semiconductor layer on a solid-state base surface including the semiconductor layer, and a second process of introducing the impurity on the solid-state base surface. By performing the second process after performing the first process, an amorphous layer having fine pores is formed on the solid-state base surface including the semiconductor layer, and the impurity is introduced into the amorphous layer to form an impurity introduced layer.

The invention relates to a genetically encoded formaldehyde reactive unnatural amino acid. Specifically, the invention discloses a genetically encoded formaldehyde reactive unnatural amino acid PrAK,a preparation method and application thereof in formaldehyde detection and imaging. According to the formaldehyde reactive unnatural amino acid PrAK provided by the invention, biomacromolecules such as EGFP (Enhanced Green Fluorescent Protein) and firefly luciferase (fLuc) can be specifically introduced into sites in a protein translation process; a reaction type biomacromolecule formaldehyde fluorescent probe and a bioluminescence probe are constructed, and formaldehyde in a biological sample can be effectively detected or imaged.

The invention relates to the technical field of heat ventilation and air conditioning and provides an air conditioning method and air conditioning device through large-flow mixed air supply. The air conditioning method comprises the following steps that airflow which is blown out from the air supply port of an air conditioning unit forms unit supply air, airflow outside the air supply area of the air conditioning unit forms return air, and a mixed air fan sucks in the unit supply air and the return air through a mixed air fan air inlet and blows out the mixed air through a mixed air fan air outlet. The air conditioning method and the air conditioning device through large-flow mixed air supply have the technical effects that the thermal comfort of human bodies can be enabled to be greater by adding the mixed air fan and properly improving air supply flow and air supply speed; and under different working conditions, by adjusting the mixing ratio of the supply air to the return air, the energy saving effect is better during operation, the application under the working conditions of higher air supply temperature becomes possible, the outdoor fresh air can be effectively introduced into a room, and an inlet, an outlet and flow passage for indoor and outdoor airflow interaction are formed.

The invention discloses a water-fertilizer integration rapid fertilizer dissolving device. The water-fertilizer integration rapid fertilizer dissolving device comprises a tank body, wherein a baffle plate which is transversely arranged is fixedly arranged in the tank body; the baffle plate is provided with a switch valve; a fertilizer mixing cavity is arranged above the baffle plate; a water-fertilizer storage cavity is arranged under the baffle plate; a fertilizer injection opening and a water injection opening are formed in the top part of the fertilizer mixing cavity; a plurality of ultrasonic generators are annularly distributed on the inner side wall of the fertilizer mixing cavity; aeration discs in one-to-one correspondence with the ultrasonic generators are arranged on the inner side wall of the fertilizer mixing cavity; the aeration discs are located under the ultrasonic generators; a stirring paddle is arranged at the bottom part of the fertilizer mixing cavity through a motor; a first heater is also arranged at the bottom part of the fertilizer mixing cavity; a groove is formed in a liquid facing surface of the stirring paddle; a screen plate is fixedly arranged at the top part of the groove; a plurality of fins which are parallel to each other are fixedly arranged on one surface, which faces the groove, of the screen plate; a fertilizer outlet is formed in the sidewall of the water-fertilizer storage cavity; a second heater is arranged on the side wall of the fertilizer outlet. According to the water-fertilizer integration rapid fertilizer dissolving device disclosed by the invention, defects of the prior art can be improved, and the fertilizer dissolving speed is quickened.

The invention discloses a motorcycle, in which: a power unit composed of an engine and a transmission device is swing-supported by the frame; the rear wheel pivots at the rear of a transmission box housing the transmission device; and an air filter (75) is arranged on the transmission Above the box (31). Among them, the external air duct (86) is connected to the transmission case (31), and the external air is introduced into the cooling air inlet (82) provided in the transmission case (31) through the external air duct to cool V by using the external air. Belt type continuously variable transmission (29); the channel forming part (86a) connected to the air filter (75) forms a channel (100) through which external air is introduced into the air filter (75). The front-opened external air is introduced into the port (85), and the channel forming portion (86a) is integrally formed with the external air duct (86). As a result, air is introduced from the outside into the air cleaner and transmission case, while reducing the number of components and the layout space of the scooter.

The invention discloses a norbornene organo-dialkoxysilane compound and a preparation method thereof. The norbornene organo-dialkoxysilane compound has a general formula (I), wherein R<1> is alkyl containing 1-5 carbon atoms; R<2> is branched alkyl with 3-10 carbon atoms on alpha or beta secondary carbon atoms connected with silicon atoms. The compound can be used as an external electron donor ofa propylene polymerization Ziegler-Natta catalyst system, can have better comprehensive performance as the external electron donor and can maintain the high activity of a catalyst and improve the hydrogen sensitivity of the catalyst as compared with existing external electron donors.

A method for preparing an ultralight EVA, LDPE foam material belongs to the chemical technical field, and in particular, the invention relates to a method for preparing an ultralight EVA, LDPE foam material. The invention provides a method for preparing an ultralight EVA, LDPE foam material, which is simple, practical, high-efficient, and free of pollution. The method for preparing an ultralight EVA, LDPE foam material of the invention comprises the following steps: putting LDPE in a reaction device with an ozone mass concentration of 55-75 mg / L, a gas flow of 0.11-0.25 m3 / h, reacting at a temperature of 80-85 DEG C for 20-40 hours; well mixing EVA and LDPE, fixing the using amounts of an AC foaming agent, DCP, and other auxiliary agents, mixing in a twin-roll mixing machine at 120 DEG C for 10-20 min, discharging to obtain sheet materials, and then performing molding and foaming at 100-165 DEG C and 1-10 MPa for 25-50 min to obtain the EVA, LDPE mixed foaming material.

The invention belongs to the technical field of lithium ion battery positive electrode materials and in particular discloses a method for preparing a multi-element precursor with low impurity content. According to the method disclosed by the invention, impurities contained in the multi-element precursor are separated, and the method comprises the following steps: simultaneously adding a ternary mixed metal salt solution of inorganic salts or organic salts of nickel salts, cobalt salts and manganese / aluminum salts, a precipitator and a complexing agent into a reactor, stirring, and performing coprecipitation so as to obtain precursor suspension B; guiding the suspension and a mother solution into an electromagnetic separation tank, stirring, establishing magnetic fields in different directions, respectively constraining residual positive ions and negative ions, dissociating so as to obtain precursor suspension D in which impurity ions are removed; and filtering, drying, screening, removing the magnetic powder, thereby obtaining the multi-element precursor product. The process disclosed by the invention is simple, high-efficiency, low in cost, low in pollution, energy-saving and environmentally friendly, and the prepared multi-element precursor product is low in impurity content, meets the positive electrode material requirements of lithium ion batteries and is suitable for large-scale industrial production.

The invention belongs to the field of pharmaceuticals and specifically discloses a burn and scald treatment medicament spraying bottle. The burn and scald treatment medicament spraying bottle comprises a bottle body, the bottle body comprises a liquid storage cylinder, an air drum, a pressurizing cylinder and a spraying cylinder, a pressurizing mechanism is arranged in the pressurizing cylinder and comprises a cylindrical housing, the cylindrical housing is internally rotatably connected with a cylindrical mounting base which extends out of the liquid storage cylinder, the outer edge of the mounting base is tangent to the inner wall of the cylindrical housing, a pressurizing cavity is formed between the mounting base and the cylindrical housing, a radial rectangular hole is formed in the mounting base, and a first pressurizing blade and a second pressurizing blade are slidingly connected in the radial rectangular hole; an elastic member is connected between the first pressurizing bladeand the second pressurizing blade, free ends of the first pressurizing blade and second pressurizing blade both fit the inner wall of the cylindrical housing, a liquid inlet and a liquid outlet are formed in the cylindrical housing, the caliber of the liquid inlet is greater than that of the liquid outlet, and the liquid inlet is communicated with the liquid storage cylinder. According to the bottle, the spraying amount of liquid medicine can be adjusted.

The invention discloses a fully-degradable heart occluder coating capable of promoting cardiac muscle tissue repair and a preparation method of the fully-degradable heart occluder coating. The preparation method comprises the following steps: (1) cleaning a substrate material; (2) pretreating a substrate material polyphenol; (3) aminating the surface of the substrate material; and (4) introducing the activated recombinant collagen to the surface of the substrate material. The extracellular matrix bionic coating based on the recombinant collagen is constructed by activating a substrate material through a polyphenol compound, introducing a polyamino compound and further effectively loading a recombinant collagen component on the surface of the material through an amino amplification effect. Growth of endothelial cells and cardiac muscle cells at a defective part is realized, and inflammatory response is reduced, so that the purpose of effectively promoting regeneration and repair of defective cardiac muscle tissues is achieved.

This cooling-water circulation system 1 is provided with: a cooling tower side circulation path 2 for circulating cooling water between a cooling tower 5 and a chiller 6; and a chiller side circulation path 3 for circulating cooling water between the chiller 6 and a to-be-cooled part 7. The cooling tower side circulation path 2 and the chiller side circulation path 3 are connected to each other bya first connection pipe 31 for introducing, into the cooling tower side circulation path, the cooling water circulating through the chiller side circulation path.

A system for introducing fresh air from a building door and window and purifying air comprises an auxiliary frame structure mounted between a door and window hole and a door and window frame. The auxiliary frame structure is formed by connecting an upper auxiliary frame sectional material, a lower auxiliary frame sectional material, a left auxiliary frame sectional material and a right auxiliary frame sectional material, wherein the four auxiliary frame sectional materials are arranged along the inner side walls of the door and window hole. A cavity of an air purifying cavity structure forms a building door and window fresh air and air purifying auxiliary frame structure through an outdoor fresh air introducing opening, an indoor air circulating introducing opening and an air outlet channel, wherein the air outlet channel is communicated with the cavity on at least one side of an air purifying device and provided with an indoor fresh air and purified air outlet, and the building door and window fresh air and air purifying auxiliary frame structure is used for introducing fresh air and circulating indoor air. The system has the advantages that the structure is reasonable and compact, a building structure and a building vertical face are not affected, the system is convenient and reliable to use, guarantees effective introduction of outdoor fresh air and can purify indoor air, oxygen content and safety of air are ensured, and a healthy living environment is created.

The invention discloses quickly vulcanized butyl rubber and a preparation method and application thereof. The quickly vulcanized butyl rubber contains the following components: 100 weight parts of butyl rubber, 1 to 2 parts of modifier M1, and 1 to 2 parts of modifier M2. The quickly vulcanized butyl rubber is prepared by the method comprising the following steps of: (1) putting the butyl rubber into rubber processing equipment, and heating the butyl rubber to the temperature of between 50 and 150 DEG C; (2) sequentially adding the modifiers M1 and M2; and (3) adding a terminator. Wherein, the reaction temperature of the modifier M1 is 50 to 140 DEG C, the reaction time of the modifier M1 is 10 to 30 minutes, the reaction temperature of the modifier M2 is 60 to 130 DEG C, and the reaction time of the modifier M2 is 10 to 30 minutes. The quickly vulcanized butyl rubber can effectively improve the vulcanizing speed and keep good mechanical property, is simple and convenient to operate, and can be widely applied in tyre preparation.