269results about How to "Quantity is easy to control" patented technology

The invention provides a method for preparing nanosilver powder in batches, belonging to the field of nano-material preparation. Nanosilver particles are synthetized in two steps, at first, a low-concentration reducing agent solution is slowly added into a solution mixed with silver salt, a protective agent, and a pH conditioning agent drop by drop, and then a high-concentration reducing agent solution is rapidly added drop by drop to obtain a nanosilver mixed solution; impurities in the nanosilver mixed solution are removed through a membrane separation device to obtain a nanosilver dispersion liquid; and at the end, absolute ethyl alcohol and a high-molecular dispersant are added into the nanosilver dispersion liquid, and spray drying is carried out by a spray drying device to obtain nanosilver powder in a certain particle size. The particle size of the prepared nanosilver powder is controllable, the batches are stable, the problems of non-uniform particle size during the synthesis of nanosilver, nanosilver separation, and agglomeration and acaking during powder preparation are solved, the preparation process and the operation are simple, and industrial and batches production is realized.

The invention provides a cell-biological scaffold complex and a 3D printing forming method thereof. The cell biological scaffold complex comprises a biological scaffold with an actual deficit condition similar to the tissues and organs of patients, a nanometer fiber layer printed on the biological scaffold, capable of simulating natural extracellular matrixes, and beneficial for the adhesion, reproduction and growth of cells, and cell suspension printed on the nanometer fiber layer. According to the actual deficit condition of the tissues and organs of patients, the cell-biological scaffold complex needed by patients can be precisely printed by adopting the bioprinting forming method.

The invention relates to a preparation method of a nitrogen and phosphor co-doped porous carbon nanotube. The method includes the following steps: 1) preparing a carboxylation carbon nanotube; 2) preparing a melamine-phenolic resin wrapped carbon nanotube by taking melamine-resorcinol-presence of formaldehyde resin as a precursor; and 3) conducting phosphatization: mixing the melamine-phenolic resin wrapped carbon nanotube obtained from the step 2) with a phosphatization agent, dispersing the mixture in deionized water in an ultrasonic manner, drying the mixture, enabling a dried product to rise to 600-900 DEG C in an inert atmosphere and to be phosphatized for 120-180min, naturally cooling the product to a room temperature, washing obtained black powder with water, performing pumping filtration until the powder is neutral, drying and finally obtaining the nanotube. The prepared nitrogen and phosphor co-doped porous carbon nanotube enables the specific capacitance of a capacitor to be substantially increased.

The invention belongs to the technical fields of inorganic material chemistry and new energy, and discloses a method for preparing porous carbon spheres doped with nitrogen and phosphorus and an application. Water serves as a solvent, polyphosphazenes microspheres and activating agents are mixed in a mass ratio of (0.2-2):1, concentration of the polyphosphazenes microspheres is maintained at a level of 10-30wt%, stirring is performed completely, the mixture of the polyphosphazenes microspheres and the activating agents is obtained through centrifugal separation, the mixture of the polyphosphazenes microspheres and the activating agents is subjected to carbonization, and finally the porous carbon spheres doped with the nitrogen and the phosphorus are obtained. The activating agents are potassium hydroxide, sodium hydroxide, calcium chloride or zinc chloride. The polyphosphazenes microspheres serve as a carbon precursor in the method, are synthesized directly under the room temperature condition, and has a simple art process and high productivity. Simultaneously, the activating agents are used for processing polyphosphazenes so as to improve specific surface areas and pore structures of the porous carbon spheres greatly and be beneficial to improve hydrogen storage capacity.

The invention discloses a combined control device system for material storage goods yard transportation and sale and a system application method. The system comprises an information inputting module, a loading control module, a weighing control module, a payment control module, an exit control module, a background storage module, a management control module and an information inquiry module which are mutually connected; and the system consists of hardware and software. The method comprises asking for a goods card during empty vehicle entrance, weighing an empty vehicle and excluding tare, swiping the card at a goods yard, weighing and determining a heavy vehicle, paying and determining, and swiping the card / shooting pictures / comparing / determining / releasing during exit; and the method can thoroughly avoid the illegal actions such as man-made weighing cheat, loading cheat, variety switch, vehicle change, and the like. The system is authorized to different departments with different level authorities through an authorization mode of different levels, has the functions of video, positioning and locking of identity cards, and avoids the illegal actions of switching license plates and vehicles. The system and the method automatically identify, determine and balance, improve the working efficiency, and are widely applicable to storage and transportation goods yards and storehouses in various industries such as coal, metallurgy, oil products, and the like.

The invention discloses a degradable open porous magnesium and magnesium alloy biomaterial and a preparation method thereof. The magnesium and magnesium alloy biomaterial is in a completely open structure, the hole shape and size are controllable, holes are communicated by virtue of communicating holes, and the number and size of the communicating holes in hole walls are controllable; the holes are uniformly distributed and the porosity is adjustable. The preparation method comprises the following steps: sintering sodium chloride crystal particles to obtain an open porous sodium chloride prefabricated structure; pouring molten magnesium or magnesium alloy into a mould cavity with a sodium chloride prefabricated body, and performing seepage pressure casting; and removing magnesium or magnesium alloy block outer skin with the sodium chloride prefabricated body, washing with alkali, and filtering to remove sodium chloride to obtain the degradable open porous magnesium and magnesium alloy biomaterial. The preparation process is simple, convenient to perform and pollution-free; the prepared open porous structure is provided with the communicated and uniformly distributed holes, is controllable in hole shape and size, relatively high in porosity and strength, free of pore former residues and pore closing phenomenon and adjustable in degradation rate, and can serve as a new-generation degradable bone tissue engineering scaffold.

The invention relates to an electroslag remelting technique, in particular to a vacuum / gas shield electroslag remelting continuous directional solidification device and method. The device comprises a power supply, a consumable electrode (1), a water-cooling crystallizer (2) and a gas shield system, wherein the lower part of the water-cooling crystallizer (2) is provided with a water-cooling chassis (7) and a stripping device (13), and a two-circuit control mode is adopted by the consumable electrode (1) to make the stripping speed equivalent with the solidification speed of a cast ingot. The invention has simple operation and low cost, is convenient to control, can be used for producing large-dimension low-segregation directional solidification cast ingots and is suitable for mass production and application.

The invention provides a method for carrying out large-scale gene typing based on an n SLAF-seq (Specific-Locus Amplified Fragment Sequencing) technology. Complexity of the genome is reduced by utilizing the SLAF-seq technology, and genetic typing is carried out on large-scale products. High-throughput sequencing is carried out on the genome, marker-developing, genetic map drawing and whole genome association analyzing are carried out on the samples by utilizing the technology. Compared with the conventional method, the large-scale genetic typing method disclosed by the invention has the advantages that the throughput is greatly improved, and the cost is greatly reduced. The method is mainly applied to marker-developing, genetic map drawing and whole genome association analyzing.

The invention discloses a degradable open-cell porous zinc / zinc alloy biomaterial and a preparation method thereof. The degradable open-cell porous zinc / zinc alloy biomaterial is of a completely open-cell structure, wherein the hole pattern and the size are controllable, holes are communicated by use of communicating holes, and the number and the size of the communicating holes in the hole walls are controllable; the biomaterial is even in overall hole distribution and adjustable in porosity. The preparation method of the biomaterial comprises the following steps that sodium chloride crystal particles are sintered to obtain an open-cell porous sodium chloride prefabricated structure; a zinc or zinc alloy melt is poured into a die cavity in which a sodium chloride prefabricated body is put and pressure seepage casting is performed; the outer skin of a zinc or zinc alloy block containing the sodium chloride prefabricated body is removed, and then alkali wash is performed and the sodium chloride is performed to obtain the degradable open-cell porous zinc / zinc alloy biomaterial. The preparation method of the degradable open-cell porous zinc / zinc alloy biomaterial is simple in process, convenient to operate and pollution-free; the obtained open-cell porous structure has the advantages that the holes are communicated with each other and distributed evenly, the appearance and size of the holes are controllable, the porosity and the strength are relatively high, no hole forming agent is left and hole closure is prevented, and meanwhile, the degradation rate is adjustable; as a result, the biomaterial can be used as a new generation degradable bone tissue engineering stent.

The present invention relates to water-thinned PVDC latex, and is especially a kind of water-thinned PVDC latex for painting special cloth and its preparation process. The water-thinned PVDC latex is prepared with mixed monomer through emulsion polymerization in the presence of emulsifier and initiator. The mixed monomer includes vinylidene chloride 75-90 %, acrylate monomer 8-20 % and unsaturated fatty acid 1-5 %. The water-thinned PVDC latex is used in treating non-woven fabric, and the treated non-woven fabric is hard, elastic, waterproof, heat resistant and crease resistant and may be used widely. In addition, the water-thinned PVDC latex has excellent compatibility with acrylic acid emulsion.

The invention provides an RH injection refining device and application thereof. The device comprises an RH ascending pipe and an RH descending pipe; pipe walls of the RH ascending pipe and the RH descending pipe are provided with through holes which are connected with an external air supply or a feeding device by spraying pipes. A method of removing small inclusions by using the device comprises:after deoxidation alloying, blowing inert gas into the descending pipe by using the spraying pipes, wherein the gas flow is 10-500L / min and air pressure is 1.0-15atm; or blowing carbonate power into steel liquid, wherein the particle size of the powder is less than 3mm, the feeding rate is 1-100kg / ton steel, the carrier is Ar, N2 or CO2 inert gas, the gas flow is 10-800L / min, and air pressure is 1.0-20atm. The invention has the characteristics of simple equipment, convenient operation, reasonable process, low cost, and good effect. The invention has the advantages of effectively removing small inclusions from steel, regulating alloying elements, manufacturing dispersion steel of small oxide, and achieving the aims of decarburization, desulfurization, dephosphorization, steel slag modification and the like.

The invention discloses a preparation method for liquefied strains of edible mushrooms. The preparation method comprises four steps of purification culture of solid strains, sterile water preparation, solid strain liquefaction and liquefied strain inoculation. Under an aseptic condition, the solid strains are added into a crushing machine and are crushed into paste strains, then the sterile water is added for diluting the paste strains to obtain the liquefied strains, and finally the liquefied strains are poured into culture bags to complete the inoculation by an appliance. The preparation method for liquefied strains of edible mushrooms has the advantages of simplified process, short production period, simplicity and convenience in inoculation, rapid spore germination, uniform cell age, early fruiting, good quality, high yield, high efficiency, small pollution risk, small investment and operating cost, good economic benefit and the like.

The invention relates to a multifunctional vacuum-positive pressure smelting and solidification device, in particular to a device for preparing various special materials by smelting and solidification processes under hermetic vacuum and high pressure. The device consists of a smelting furnace and a unidirectional solidification furnace which are placed at a mutual angle between 90 and 100 DEG, and communicated through a sprue cup; the open end of the sprue cup is lower than a crucible in the smelting furnace and encloses the lower edge of the crucible, while the other end is lower than the upper edge of a unidirectional solidification die in the unidirectional solidification furnace; and fused mass casting speed is controlled by the tilting speed of the device, and the unidirectional solidification speed of fused mass can be controlled by the water velocity in a water cooled crystallizer and medium between the water cooled crystallizer and a casting die. The device can be used for producing porous foam materials, high nitrogen austenite stainless steel and metal / ceramic composite materials in the fields such as aviation, electronic, medicine and biochemistry, metallurgical machinery, petrochemical industry, energy and environmental protection, national defense and war industry and the like.

The invention relates to an ultrathin oriented silicon steel sheet and a short-process manufacturing method thereof. The steel sheet comprises the following components in percentage by mass: 0.002-0.08% of C, 2.8-3.4% of Si, 0.05-0.30% of Mn, 0.015-0.04% of S, 0.005-0.05% of Als, 0.003-0.010% of N, 0-0.6% of Cu, 0-0.2% of Sn, less than 0.004% of O, less than 0.01% of P and the balance of Fe. The thickness of the product is 0.05-0.15mm. The manufacturing method comprises the following steps: (1) smelting molten steel; (2) carrying out continuous casting to obtain a casting band; (3) cooling, carrying out hot rolling and coiling; (4) carrying out normalizing treatment and controlled cooling; (5) pickling, and carrying out primary cold rolling; carrying out interannealing; (6) pickling, and carrying out secondary cold rolling; carrying out decarburizing annealing; (7) coating an annealing separant; and (8) carrying out high-temperature annealing and purification annealing. The method greatly simplifies the ultrathin oriented silicon steel sheet production process, is simple and effective, and has the characteristics of short process, high controllability and low energy consumption.

The invention relates to the field of heterogenetic difficultly-welded material melting, and specifically relates to a titanium alloy and stainless steel electron beam welding filler material. The titanium alloy and stainless steel electron beam welding filler material is characterized in that the electron beam welding filler material between a titanium alloy plate and a stainless steel plate comprises a vanadium layer and a copper-chromium alloy layer, wherein the copper-chromium alloy layer is composed of the following elements in percentage by mass: 30-50% of chromium powder, 2-5% of nickel powder, 3-7% of titanium powder and the balance of copper powder. Through changing the compositions of the filler material, Ti and Fe elements can be effectively separated so as to avoid the formation of brittle intermetallic compounds in welds, therefore, the filler material has the advantages of high weld density, small brittleness, no pore and crack, and the like.

The invention provides a method for continuously preparing a nanoflower lithium ion battery layered anode material and a reaction kettle realizing the method. The method includes: (1), preparing a: preparing raw materials according to a chemical formula LiNixCoyMn1-x-yO2; (2), co-precipitating: using a co-precipitation method to obtain a reaction product, and subjecting the reaction product to aging, filtering, washing and drying to obtain precursor particles of a nanoflower structure; (3), calcining:calcining the precursor particles at high temperature to obtain the nanoflower lithium ion battery layered anode material. A template agent does not need to be added in the preparation process, and the particles are controllable in size, uniform in distribution and high in uniformity. Three layers of stirring paddles are arranged in the reaction kettle and stir at the same time, so that the materials are quick and uniform in reaction, and the particles are uniform and high in fluidity. By using the method, the lithium ion battery anode material in special nanoflower shape; the method is simple to operate, the reaction kettle is stable and reliable in structure, and industrial production is facilitated.

The invention discloses an orientation jetting and fracturing exploitation method for coal bed gas under a coal mine. The method includes the steps that a drilled hole along a coal bed is formed in a top plate or a bottom plate; a fracturing pipe set and a radial perforator are placed in a first perforation position; the hole is sealed; the fracturing pump set and the perforator are connected with corresponding pump sets respectively, and a jet flow channel is formed by the perforator and used for communicating the coal bed and the drilled hole; annular fracturing liquid is injected into the drilled hole in a pressure mode, and meanwhile annular pressure is kept; the coal bed is continuously jetted for preset time so that cracks can be formed on coal bodies and extend in the bottom direction of jetting holes of the coal bed; jetting and fracturing are stopped at the same time, the perforator is moved to a next jetting position to form the jet flow channel, and then fracturing liquid is pressurize and jetted continuously; the steps of independently jetting a rock stratum and pressurizing and jetting the coal bed are repeatedly executed until jetting and fracturing at all positions in the drilled hole is finished, and then the coal bed gas is extracted. The orientation jetting and fracturing exploitation method has the advantages that the trend and the quantity of the cracks are controllable, exploitation efficiency of the coal bed is high, the gas disaster of the mine can be effectively prevented and treated, and economic and social benefits can be improved.

The invention provides a method for modifying a carbon porous material, characterized in that by applying a high pressure pulse voltage on two opposite plate electrodes and inserting an electrolyte plate which has a high dielectric constant and a compact structure and has an area that is slightly larger than the size of the plate electrodes between the two opposite plate electrodes, a uniform discharge plasma reaction zone is formed between the plate electrodes; mixed gasses containing oxygen are uniformly mixed at normal temperatures and pressures, the mixed gasses are subject to ionization activation by the plasma reaction zone to generate a plurality of oxygen-containing plasma gasses, after gas distribution is carried out, the gasses vertically flow through a pre-cleaned carbon porous material in the thickness direction to react to obtain the activated carbon porous material. The method has the advantages of environmental protection, low cost, mild treatment conditions, easy control of function group quantity, and outstanding improvement of the activity of the electrode material, and the method can realize gradient treatment, can reduce the area resistance of the contacting surface of the porous material and the bipolar plate, so as to increase the battery efficiency. The method uses devices, thus the method is easy for industrialized operation.

The invention provides a polyarylether containing a quaternary ammonium side group and its preparation method, an anion exchange membrane preparation method, and an anion exchange membrane prepared through the anion exchange membrane preparation method. The polyarylether has a structure represented by formula (1); and in the formula (1), R1 is a C2-C5 alkylidene group with a hydroxy group, R2-R4 are C1-C5 alkyl groups, X is halogen, n is not lower than 2, Ar1 has one or more of structures represented by formula (2)-formula (4) respectively, and R5-R28 are H, halogen or C1-C5 alkyl groups respectively. The anion exchange membrane has the advantages of high ion conductivity, low water absorption and inhibited swelling.

The invention relates to a method for generating a two-dimensional identical-focal spot array by using the radiation field of a planar array antenna. The method comprises the steps of firstly adoptinga 4[pai] focusing system composed of two high numerical aperture lenses; then arranging a virtual planar antenna array in the center of the focal plane of the 4[pai] focusing system composed of the two high numerical aperture lenses, wherein the electromagnetic field radiated by the antenna array is outwards propagated to the lens on the image space side, and completely collected by the two highnumerical aperture lenses, and then continuously propagated to the pupil planes of the two lenses, and thus field distribution on the pupil planes is achieved; and at last, regarding the field distribution on the pupil planes to be incident fields and reversely transmitting the incident fields to a focal region, so as to generate the two-dimensional identical-focal spot array with specific characteristics on the focal plane of the high numerical aperture lenses. According to the method provided by the invention, the two-dimensional identical-focal spot array having the specific quantity, separation distances and positions is generated by using the method with no need to optimize.

This invention provides a fluidized-bed dryer. Said device dries the treating object B supplied in a device body 1 by forming a fluidized bed C by flowing the treating object B by flowing gas A. In the device body 1, an agitating means 13 composed of an agitating blade 12 rotatable by a rotary shaft 11, and agitating the treating object B in the fluidized bed C is provided under a supply port of the treating object B in the device body 1. Said device capable of preventing the situation such as hindering a flow since a treating object becomes a mass shape even when drying the treating object having the large moisture content, and the treating object strong in an adhesive property.

The invention discloses a seed treating and inoculating method for artificially inoculating cistanche deserticola ma serving as a traditional Chinese medicinal material. The invention provides a seed treating liquid for artificially inoculating cistanche deserticola ma. Due to the adoption of the seed treating and inoculating method for artificially inoculating cistanche deserticola ma serving asa traditional Chinese medicinal material, a method for artificially inoculating cistanche deserticola ma is improved, the inoculating position and quantity of the cistanche deserticola ma are easy tocontrol, the parasitic success rate (parasitic success can be up to 70 percent) and the working efficiency are increased greatly, the cost is lowered, and the benefit is increased.

The invention belongs to the technical field of materials, in particular to a carbon nanometer material with surface carboxyl functionalized, a preparation method of the carbon nanometer material and an application of the carbon nanometer material. The preparation method of the carbon nanometer material with surface carboxyl functionalized comprises the following steps: (1) preparing a fictionalization nanometer material including acyl chloride groups: adding 100 mg of carbon nanometer materials into 100 ml of a carboxylation accelerator, dispersing the materials in an ultrasonic mode, adding 2 g of acyl chloride and 3-5 g of a catalyst, reacting all the materials for 48-72 hours, filtering, and obtaining filter residue which is the fictionalization nanometer material including the acyl chloride groups; (2) preparing the carbon nanometer material with surface carboxyl functionalized: adding 100 mg of the fictionalization nanometer material including the acyl chloride groups, prepared in the step (1), into 100 ml of a acid solution with the concentration of 1 mol / L, dispersing the materials in an ultrasonic mode, stilling the materials, filtering, washing and drying filter residue, and obtaining the carbon nanometer material with surface carboxyl functionalized.

The invention relates to the investment casting technology, in particular to a preparation method of a plane thin-wall casting. The preparation method provided by the invention comprises the steps of: selecting a ceramic wafer as a support carrier of wax paper; first, cutting the Al2O3 ceramic wafer and the wax paper in same dimension and stacking the ceramic wafer and the wax paper alternately, sealing the upper and lower edges of the ceramic wafer by a binder to obtain a ceramic-wax paper group; then welding the ceramic-wax paper group with a middle temperature wax plate alternately as an ensemble and assembling a plurality of such ensembles into a module according to conventional assembling manner of wax mould module; then preparing a ceramic mould shell according to the preparation process of the mould shell; and finally obtaining the plane thin-wall casting by steps of smelting, pouring, distressing and cleaning the shell. Thickness of the thin-wall casting can be controlled precisely manually and thickness of a thin sheet can be controlled precisely to 0.2mm. The preparation method of the plane thin-wall casting provided by the invention solves the engineering problem that the plane thin-wall casting mould is difficult to design and the surface of the plane thin-wall casting is uneven and the plane thin-wall casting is undersized and the like to the disadvantage of volume production.

The invention provides a portable automatic bunching device for crabs, and belongs to the field of crab processing devices. The portable automatic bunching device comprises a feeding mechanism, a bunching mechanism and a positioning mechanism. The positioning mechanism is used for fixing crab legs. The feeding mechanism comprises a hopper, a channel and a baffle. The hopper is mounted at the top of the channel. The channel is vertically arranged. The baffle is mounted in the channel, and is used for controlling the channel to be opened or closed. The positioning mechanism is positioned at the lower part of a discharge opening of the channel, and is used for bearing crabs falling from the discharge opening and fixing the crab legs. The bunching mechanism is located between the positioning mechanism and the feeding mechanism, and is used for bunching crabs. An auxiliary device, that is, the portable automatic bunching device, is simple and reasonable in structure, convenient to process and manufacture, low in manufacturing cost, and convenient to mount and use; and besides, crabs can be quickly fixed through the auxiliary device, workers are not easily injured during the fixing process, and crab claws are not prone to be damaged, so that the crab bunching efficiency is improved, and the auxiliary device is safe, reliable, and convenient to use.

The invention provides a long nozzle for pouring basket metallurgy and the application thereof; the long nozzle comprises a nozzle body, a through hole is arranged on the wall of an upper part of thenozzle and is connected with an external conveying pipe by a joint, and the axial direction of the through hole and the axial direction of the upper part of the nozzle form 10-90 degrees. The long nozzle can effectively control non-metallic inclusion in molten steel, accurately control and regulate the content of trace elements in molten steel and produce fine oxides to disperse steel; the long nozzle has simple structure and rational design, and has high efficiency on removing fine oxides and can slow down the blocking phenomenon of a pouring basket submersed nozzle; the long nozzle can control extra particle quantity , has high hit rate to trace alloy elements and uniform ingredients; by adopting the long nozzle, various beneficial additives are added in the steel, and the application isstrong, the operation is simple and the cost is low.

The invention discloses a following positioning method based on a UWB technology. Each UWB positioning base station is configured with an ID number and a following base station list. The UWB positioning label comprises a detection process and a positioning process. In the detection process, the label sends a detection message, the peripheral base stations perform delayed reply according to the IDnumbers of the peripheral base stations, the label calculates the distance between the base stations by using a unilateral bidirectional distance measurement method after receiving the reply, and a following base station list of the nearest base station is stored; in a positioning process, the label sends a starting message containing a following base station list; and after receiving the message,the peripheral base station performs delay and reply according to the position of the ID of the peripheral base station in the list, the label sends an end message after receiving the reply, the label finds the nearest base station according to a unilateral bidirectional distance measurement method and updates a following base station list, and the base station calculates the distance according to a bilateral bidirectional distance measurement method and uploads the distance. According to the following positioning method provided by the invention, the problem of message conflict in the replyprocess of the base station is solved, and the ranging stability is improved.

The invention discloses aliphatic polyester-b-poly(ethylene oxide-co-propylene epoxide) amphipathy block copolymers side hydrophilic chains of which are provided with different functional groups, and a preparing method of the copolymers. The functional groups comprise halogen, azido, amino, carboxyl, and other groups. P(EO-co-ECH) is synthesized under mild reaction conditions through a controllable anionic coordinate polymerization method. A random copolymer (P(EO-co-Glycidyl Azide)) side chains of which is provided with the azido is obtained by azidation of the halogen on the P(EO-co-ECH). An amphipathy block copolymer the side hydrophilic chains of which are functionalized is obtained by subjecting the P(EO-co-Glycidyl Azide) and an aliphatic ester monomer to ring opening polymerization. Through reduction and click chemistry reactions, the azido of the block copolymer is converted, so as to obtain a series of amphipathy block copolymers the side hydrophilic chains of which are provided with the different functional groups such as amino and carboxyl are obtained.