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42results about How to "Guaranteed deposition" patented technology

Multi-stage magnetic field straight pipe magnetic filtration and pulsed bias compounded electrical arc ion plating method

ActiveCN103276362ALow ionization rateLow pulse duty cycle to generate high ionization rateVacuum evaporation coatingSputtering coatingPlasmaMagnetic filtration
The invention relates to a multi-stage magnetic field straight pipe magnetic filtration and pulsed bias compounded electrical arc ion plating method, and belongs to the technical field of material surface treatments. In the prior art, plasma transmission efficiency is low and pulsed bias can not completely remove large particles due to applying of magnetic filtration on an arc source. A purpose of the present invention is to solve problems in the prior art. The method comprises: 1, connecting a workpiece to a pulsed bias power supply, connecting an electrical arc ion plating target source to a target power supply, and connecting a multi-stage magnetic field straight pipe magnetic filtration device in front of the target source; 2, carrying out thin film deposition, wherein work gas is introduced until achieving 0.01-10 Pa when a pressure in a vacuum chamber is less than 10<-2> Pa, the pulsed bias power supply is opened, a pulsed bias amplitude value, frequency and a duty ratio are adjusted, the target power supply is opened, plasma is generated, the multi-stage magnetic field straight pipe magnetic filtration device is opened, removal of large particles and efficient transmission of the plasma in the magnetic filtration device are achieved, process parameters are adjusted, and a thin film with no large particle defect is rapidly produced; and 3, adopting a single-stage magnetic field to combine direct current / pulsed bias to obtain a thin film with a certain thickness.
Owner:ZHENGZHOU UNIVERSITY OF AERONAUTICS

Wire storing device

The invention discloses a wire storing device, which comprises a fixed part, a driving wire wheel set and a driven wire wheel set. The driving wire wheel set is provided with a plurality of driving wire wheels and a driving pivot. The plurality of driving wire wheels are assembled on the driving pivot. The driven wire wheel set is provided with a plurality of driven wire wheels and a driven pivot. The plurality of driven wire wheels are assembled on the driving pivot. One end of the driving pivot is fixed on the fixed part. The driving pivot and the driven pivot are arranged in parallel. The driven wire wheel set is below the driving wire wheel set. The wire storing device is characterized by comprising driving and speed-adjusting equipment which is used for driving the driving wire wheels and controlling the rotation speed of the driving wire wheels. The wire storing device disclosed by the invention is high in wire storing capacity. Furthermore, the wire quality can be ensured after wires are stored.
Owner:SHENZHEN WOER HEAT SHRINKABLE MATERIAL

Magnetron sputtering method for depositing thin film

The invention discloses a magnetron sputtering method for depositing a thin film. The method comprises the following steps that within first preset time, process gas is introduced into a reaction chamber; within second preset time, first DC bias is exerted on a target material, and lighting-up is carried out; within third preset time, introducing of the process gas is stopped; within fourth preset time, the first DC bias is increased to be second DC bias, RF bias is loaded on a lower electrode at the speed of 500 W / s-2000 W / s, and the thin film is deposited into a silicon through hole; within fifth preset time, exerting of the DC bias and the RF bias is stopped, and the process gas continues to be introduced into the reaction chamber; the steps are repeated until the thickness of the thin film meets the process requirement. The magnetron sputtering method for depositing the thin film can effectively prevent the lower portion of the reaction chamber from being lightened and ensure that the thin film can deposit in the silicon through hole smoothly.
Owner:BEIJING NAURA MICROELECTRONICS EQUIP CO LTD

Metal lithium negative electrode with preset stable protective film and preparation method thereof

The invention discloses a metal lithium negative electrode with a preset stable protective film and a preparation method thereof, which belong to the field of metal lithium negative electrode secondary batteries such as lithium-sulfur batteries and aim to solve the problems of poor safety and cycling stability of the metal lithium negative electrode. The method comprises the following steps of: roughening the surface of a current collector such as a copper foil or foamy copper in advance, then coating a polymer / ceramic composite film, and then electrically depositing metal lithium between thecurrent collector and a protective film. The lithium ion conduction and electronic insulation of the preset protective film ensure that the electrodeposited metal lithium is deposited on the interfaceof the protective film and the current collector. The preset protective film has elasticity, can keep complete along with the displacement of the surface of the metal lithium in the charging and discharging process, and has enough strength to prevent lithium dendrites from being generated, so that the safety of the metal lithium negative electrode is improved; the protective film separates the metal lithium from the electrolyte to prevent reaction, dead lithium cannot be generated, the shuttle effect can be inhibited in the lithium-sulfur battery, and the cycling stability is good. And the metal lithium negative electrode with the preset protective film is stable in air, so that the battery is convenient to assemble.
Owner:HARBIN INST OF TECH

Hydrocracking method

The invention discloses a hydrocracking method. The method comprises the following contents: heavy distillate oil raw material and hydrogen orderly enter a hydrorefining reactor, a hydrocracking reactor and a separation system after being mixed; a cylinder with a bottom is arranged at an upper part of the hydrorefining reactor, the height of the cylinder is 4%-20% of the height of the hydrorefining reactor, and the outer diameter of the cylinder is 85%-95% of the inner diameter of the hydrorefining reactor; holes through which the material flow can pass are formed on the bottom and the side wall of the cylinder, and the sizes of the holes are 1-40 mesh; the cylinder is filled with hydrorefining catalyst, the infrared acid amount and the active metal content of the filled catalyst are in anenhanced situation along the material flow direction, the catalyst pore volume, the particle size and the specific surface area are in a reduced situation, and the bottom of the cylinder is filled with the conventional hydrorefining catalyst. Compared with the existing hydrocracking technology, the hydrocracking process disclosed by the invention is more flexible in flow, can process more inferior raw material, and greatly improves the processing capacity of the device.
Owner:CHINA PETROLEUM & CHEM CORP +1

Strain meter using silicon-germanium heterojunction nanowire arrays as sensitive elements and preparation method of strain meter

The invention discloses a strain meter using silicon-germanium heterojunction nanowire arrays as sensitive elements. The strain meter comprises an silicon-on-insulator wafer and an oxide layer covering the silicon-on-insulator wafer. A deep groove is formed in the silicon-on-insulator wafer. The oxide layer is disposed on both the side wall and the bottom of the deep groove. Two windows for growing nanowire are respectively formed in the two opposite side walls of the deep groove. A tin nano-particle catalyst layer is disposed on each window. One silicon-germanium heterojunction nanowire array grows on each tin nano-particle catalyst layer. The two opposite windows are connected through the silicon-germanium heterojunction nanowire arrays. The strain meter using the silicon-germanium heterojunction nanowire arrays as the sensitive elements has the advantages that the sensitivity of sensitivity sources is increased. In the mean time, the invention further discloses a preparation method of the strain meter, and the preparation method is simple and compatible with the existing integrated circuit processes.
Owner:SOUTHEAST UNIV

Heath product for increasing bone density and preparation method thereof

ActiveCN101690589ARich sourcesCheap calcium sourceFood preparationHigh absorptionDry weight
The invention discloses a health product for increasing bone density, which consists of cattle bone meal, chondroitin sulfate and vitamin D3. Preferably, mass percentages of the components of the cattle bone meal, the chondroitin sulfate and the vitamin D3 by weight are: 74 to 75 percent, 24 to 25 percent and 0.1 to 1 percent respectively. The invention also provides a method for preparing the health product. Animal tests prove that after a rat orally takes the health product for three months, the final weight and the added weight of the rate are both higher than those of a basal feed group and a calcium carbonate control group, and the differences are statistically meaningful; the apparent absorption rate of calcium of the health product is higher than that of the calcium carbonate control group; and the dry weight of the thigh bone and the density at the distal end of the thigh bone of the health product group are obviously higher those of the basal feed group and the calcium carbonate control group. The health product of the invention has the advantages of good calcium supplying effect, high absorption rate, obvious increase of the bone density and wide application prospect.
Owner:吉林省长春皓月清真肉业股份有限公司

Vertical backwashing filter device

The invention provides a vertical backwashing filter device. The vertical backwashing filter device comprises a filter screen cylinder, and a water inlet pipeline and a water outlet pipeline which arearranged on the filter screen cylinder, a vertical middle separator plate divides the internal of the filter screen cylinder into a left chamber and a right chamber, each of the left chamber and theright chamber is filled with a filter material, the water inlet pipeline is arranged at the bottom of the filter screen cylinder, the water outlet pipeline is arranged on the top surface of the filterscreen cylinder, and the water inlet pipeline is provided with a water pump; and the filter screen cylinder is supported by a support. The backwashing device designed in the invention has a simple and reasonable structure, and integrates filtering and backwashing, adopts a bottom-to-top filtering mode and a top-to-bottom backwashing mode adopted in the invention ensure that a filtering element isnot obstructed by impurities, precipitating downwards under the action of gravity and accumulating, in water to be filtered, and facilitate the backwashing operation.
Owner:SHIHEZI UNIVERSITY

Method for preparing overall semal accurately formed by additive manufacturing and electrolytic machining

The invention discloses a method for preparing an overall semal accurately formed by additive manufacturing and electrolytic machining. The method combines an electrolytic machining method with a laser additive manufacturing method, at first, grooves are formed in a hub through electrolytic machining, then blade blanks are fabricated on the hub with the grooves by the laser additive manufacturingmethod, the blade blanks are finally machined by the electrolytic machining method, and thus the overall semal can reach design accuracy; and blade additive deposition begins at the grooves, stress concentration at the joint of the hub and blades can be effectively avoided, the overall use performance of components is improved, and the service life of the components is prolonged. The method not only can give full play to the advantages of high utilization rate and free forming of additive manufacturing materials, but also overcome the contradiction between the deposition efficiency and workpiece accuracy of the additive manufacturing materials, enables the dimensional accuracy and surface quality of workpieces to reach high standards, finally reduces manufacturing procedures, greatly shortens the processing cycle of the overall components and reduces the production cost.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Feed for grass carps at cultivating period for causing meat to be fresh and tender and preparation method thereof

The invention discloses a feed for grass carps at a cultivating period and a preparation method thereof. The feed is prepared from the following components by certain ratio: fish meal, soybean meal, cottonseed meal, rapeseed meal, corn, wheat, rice bran, bran shorts, distiller's grains, soybean oil, monocalcium phosphate and grass carp premix. The method comprises the following steps: A, burdening the fish meal, the soybean meal, the cottonseed meal, the rapeseed meal, the corn, the wheat, the rice bran and the bran shorts; B, carrying out micro-grinding on the burdened raw materials; C, feeding the crushed materials into a mixer, and feeding the soybean oil, the distiller's grains, monocalcium phosphate and the grass carp premix to the mixer to mix; D, modulating the mixed materials, and adopting a dual-layer or triple-layer modulator in the modulation process, wherein the tempering vapor is saturated dry vapor; E, enabling the draw ratio of a circular mold for pelletizing to be greater than 11, wherein the aperture of the circular mold is determined according to the specifications of the grass carps; F, cooling; and G, metering and packaging. The method is feasible, and simple and convenient to operate, the digestion rate of the feed for the grass carps is increased, the feed cost is reduced, and the culture benefit is improved.
Owner:HUAZHONG AGRI UNIV

Portable raw coal sampling device

The invention discloses a portable raw coal sampling device. The portable raw coal sampling device comprises a sleeve, a sampling container and a connection tube which communicates the sleeve with the sampling container, wherein a strand opening is formed in each of two ends of the sleeve; the sampling container comprises a tank body, a cover body and a blockage porous plate which is arranged in the tank body; the tank body is divided by the blockage porous plate into an air inlet side and an exhaust side, an exhaust hole is formed in the cover body on the exhaust side, and a decompression filter net is arranged on the exhaust hole. The sealed sampling in the whole process is realized by utilizing the strand openings, flying ash is prevented from being splashed everywhere, the sanitation of the peripheral environment is protected, the human body is prevented from being injured, the deposition of the coal ash in the sampling container can be effectively guaranteed by combining the blockage of the blockage porous plate with the pressure-retaining exhaustion of the decompression filter net, the collection effect is improved, the completeness of the coal powder sample also can be improved, and the accuracy of the coal powder sample can be improved.
Owner:IN LINAC ENERGY INNOVATION

Aluminum silicon carbide high-power LED radiator and preparation method thereof

The invention provides an aluminum silicon carbide high-power LED radiator and a preparation method thereof. The preparation method comprises the following steps: proportioning, ball-milling and mixing, granulating, and pretreating raw materials to obtain granulated powder; forming the granulated powder into a silicon carbide ceramic prefabricated part through a cold isostatic pressing technology; sintering the formed silicon carbide prefabricated part; smelting a ZL101A aluminum alloy to obtain an aluminum alloy melt; putting the silicon carbide ceramic prefabricated part into a steel mold through a vacuum pressure infiltration method, pressing molten aluminum alloy into pores of the silicon carbide ceramic prefabricated part by adopting high-pressure inert gas at a certain temperature in a vacuum environment, and carrying out heat treatment to prepare an aluminum silicon carbide casting; and carrying out surface metallization plating process treatment on an aluminum silicon carbide finished product to form the aluminum silicon carbide high-power LED radiator. The method overcomes the defects of complex process, expensive equipment, long production period and high energy consumption, has the advantages of compact products, excellent performance, simple operation and low cost, and is wide in application range.
Owner:珠海亿特立新材料有限公司

Gas circulating system for preparing high-quality diamond and application method thereof

The invention relates to a gas circulating system for preparing high-quality diamond and an application method thereof, belonging to the field of material preparation. The gas circulating system comprises direct current jetted plasma chemical vapor deposition systems, a gas supply system, a tail gas circulating system and a gas purification system. The gas supply system supplies feed gas for two direct current jetted plasma chemical vapor deposition systems. The tail gas circulating system can pump out tail gas in the deposition systems and supply the tail gas to the gas purification system composed of a hydrogen purification apparatus. After the tail gas is purified, high-purity hydrogen and a gas mixture containing argon and carbon are separated, wherein the high-purity hydrogen is supplied for deposition devices, and the tail gas containing argon and carbon being used as the feed gas is supplied for one deposition device to deposit heat-sink grade diamond. Another deposition devicecan realize the supply of high-purity gas to deposit an optical-grade diamond film. By the process, the gas circulating system realizes the recycling of the high-purity hydrogen, can meet the preparation demand of a high-quality diamond film, and can also reduce the preparation cost.
Owner:UNIV OF SCI & TECH BEIJING

Green healthy black carp fodder containing no hormone

The invention discloses a green healthy black carp fodder containing no hormone. The fodder is prepared from the following raw materials in parts by weight: 25-45 parts of corn, 18-25 parts of wheat, 4-18 parts of potato, 25-34 parts of cotton seeds, 5-12 parts of bean pulp, 10-20 parts of rape seed cake, 14-18 parts of sesame-seed cake, 2-8 parts of fermented tea seed cake, 4-8 parts of soybean, 1-5 parts of spiral seaweed powder, 4-12 parts of corn germ meal, 2-4 parts of bamboo powder compound zeolite, 0.5-1.2 parts of calcium hydrophosphate, 0.1-0.2 part of yeast powder, 0.2-0.6 part of glycine betaine, 0.5-1.5 parts of tea polyphenol, 0.2-1 part of apple polyphenol, 0.2-0.8 part of tryptophan, 0.01-0.06 part of multi-vitamins and 0.02-0.1 part of a compound mineral substance. The green healthy black carp fodder disclosed by the invention contains no hormone, is healthy, is harmless to human health, is reasonable in nutrition proportion and is capable of restraining fat accumulation on abdomen and mesentery, so that the meat of the cultivated fish is fresh, tasty and fragrant.
Owner:无为沈氏水产养殖有限公司

Lithium composite negative electrode material with three-dimensional skeleton structure and reserved space on surface and preparation method of lithium composite negative electrode material

The invention discloses a lithium composite negative electrode material with a three-dimensional skeleton structure and a reserved space on the surface and a preparation method of the lithium composite negative electrode material, and belongs to the technical field of chemical power sources. Molten metal lithium and fluoride and / or oxide and / or sulfide are subjected to a chemical reaction to be compounded, and the lithium composite negative electrode material with the surface provided with a three-dimensional framework structure formed by lithium fluoride and / or lithium oxide and / or lithium sulfide micro-nano materials and a reserved space is obtained. The reserved space is used for accommodating the deposition of metal lithium and keeping the volume of the negative electrode stable, and the three-dimensional framework is used for limiting the growth of the metal lithium in the framework and regulating and controlling the deposition behavior of the metal lithium, so that the formation of lithium dendrites is inhibited, and the cycle life of the lithium metal battery is greatly prolonged; the problem that lithium dendrites are formed due to the fact that metal lithium in an existing lithium composite negative electrode material is not controlled to grow is solved. Meanwhile, the electrochemical performance of the lithium composite negative electrode material is remarkably improved, and the lithium composite negative electrode material is easy to prepare and convenient for large-scale mass production and application.
Owner:YANGTZE DELTA REGION INST OF UNIV OF ELECTRONICS SCI & TECH OF CHINE HUZHOU

Mixed fermentation-type Chinese herbal medicine additive for laying hens in later period of laying and preparation method and application thereof

The invention belongs to the technical field of feed additives, discloses a mixed fermentation-type Chinese herbal medicine feed additive for laying hens in the later period of laying, and provides amixed fermentation-type Chinese herbal medicine feed additive which can effectively increase the digestion and utilization rate of gastrointestinal tracts to nutrient substances, improves the antioxidant level of the organism, can delay degradation of the reproductive system of a laying hen, prolongs the laying period and improves the egg quality. In the process of mixed fermentation of the Chinese herbal medicines, aspergillus niger and saccharomyces cerevisiae change metabolic pathways in order to adapt to a special growth environment to generate new metabolites, and the new metabolites havea synergistic effect with traditional Chinese medicine components to achieve the effects of improving the medicine effect, changing the medicine property, generating a new treatment effect and the like. In addition, aromatic substances can be generated in the fermentation process, so that the palatability of the feed is improved, and the ingestion condition of animals is improved. The invention further provides a preparation method of the mixed fermentation-type Chinese herbal medicine feed additive having low cost, a simple operation process, high effective component content, richer nutrientsubstances and a better medicine effect.
Owner:SHAANXI SHIYANG AGRI TECH

Method for quickly and freely depositing or etching atomic layer and chamber structure

The invention belongs to the technical field of atomic layers, and provides a method for quickly and freely depositing or etching an atomic layer and a chamber construction.The chamber structure comprises a disc chamber, a plurality of source reaction chambers which are annularly arranged at equal intervals are arranged in the disc chamber, and transmission chambers are arranged outside the source reaction chambers; at least one substrate transmission device rotating around the circle center of the disc cavity is arranged in the middle of the disc cavity; according to the invention, the deposition or etching reaction is carried out through the rotary reciprocating motion of the substrate carrying transmission device, the deposition or etching rate is improved while the deposition or etching effect is ensured, and the deposition or etching efficiency can be improved by setting different cavity numbers and operation programs according to the types of deposition or etching materials. And automatic and intelligent deposition or etching of various materials is realized.
Owner:江苏鹏举半导体设备技术有限公司

Reciprocating feeding type medicinal material cleaning and decocting integrated extraction device

The invention discloses a reciprocating feeding type medicinal material cleaning and decocting integrated extraction device. The device comprises a cleaning tank, a rotating cylinder, a containing movable plate, a bottom plate, a decocting machine body, a valve, a material blocking plate and an elastic piece; a first opening is formed in the bottom of the cleaning tank, and the bottom plate rotation can cause the first opening to be opened and closed; the containing movable plate can be slidably matched in the cleaning tank through a first sliding groove and can slide out completely from a first discharging hole; a plurality of water leakage holes penetrating up and down are formed in the containing movable plate; the containing movable plate can slide into an interior cavity of the decocting machine body through a first feeding hole; and when the valve moves downwards to a non-closed state, the bottom of the material blocking plate makes contact with the top of the containing movableplate and ensures that a gap between the bottom of the valve and the bottom of the first feeding hole in the state is larger than the thickness of the containing movable plate. The device has the advantages of improving the coordination and integration effects among various devices in the previous process of extracting solution forming of a water extraction system in the prior art.
Owner:安徽斛宝林生物科技有限公司

An oil shale dry distillation shale oil and gas phase state separation device

The invention provides a shale oil-gas-phase separating device for oil shale distillation. The shale oil-gas-phase separating device is characterized by comprising a heavy oil washing separation tank, an oil sludge deposition tank, a heavy oil washing circulation tank, a heavy oil sludge tank, a light oil washing separation tank, a light oil intercooling separation tank, a moderate-temperature using intercooling heat exchanger, a high-temperature using intercooling heat exchanger, a low-temperature using intercooling heat exchanger, a light oil washing circulation tank, an electrostatic oil trap and a gas collection tank. The shale oil-gas-phase separating device can efficiently separate shale ashes from shale oil gas, separates heavy oil from light oil, separates gas, recycles heat of high-temperature shale oil gas, and fully utilizes self-distilled products without circulation of other external working media, so that energy consumption is reduced, and the yield and the quality of heavy oil, light oil of gasoline, light oil of light diesel oil and gas in the condensation and recovery processes of shale oil gas are improved. The shale oil-gas-phase separating device is wide in application range, and can be used for dry distillation of coal, oil sand, waste tires, petroleum coke, organic wastes and biomass.
Owner:NORTHEAST DIANLI UNIVERSITY

Self-circulation return material gradient humidification flue gas desulfurization and denitrification system and method

PendingCN112138521AEliminate sticky wall scalingHigh corrosion strengthGas treatmentDispersed particle separationNitric oxideNitrogen oxides
The invention provides a self-circulation return material gradient humidification flue gas desulfurization and denitrification system and method. According to the system, multi-stage humidifying activation is adopted, the final ultralow emission effect of flue gas can be achieved, and wastewater-free emission can also be achieved. A self-circulation return material gradient humidifying flue gas desulfurization and denitrification tower is used for desulfurizing and denitrifying flue gas, sulfur dioxide is removed by chemical absorption reaction of an alkaline desulfurizing agent, and nitric oxide is oxidized into high-valence nitric oxide by an oxidizing agent to be absorbed and removed.
Owner:南京依涛环保科技有限公司

Wall brick capable of building wall rapidly

The invention discloses a wall brick capable of building a wall rapidly, and belongs to the field of building materials. The wall brick comprises a brick body, the brick body is a cube, a top groove is formed in the top face of the brick body, a bottom groove is formed in the bottom face of the brick body, the projection areas of the top groove and the bottom groove are overlapped, a penetrating internal grouting channel is formed between the top groove and the bottom groove, at least one inner wall of the internal grouting channel is arranged to tilt, and the cross section area of the internal grouting channel is gradually decreased from top to bottom. The wall brick capable of building the wall rapidly has the advantage that the speed of wall building by a bricklayer can be increased obviously.
Owner:JIAXING BOHONG NOVEL BUILDING MATERIALS

A device for printing and dyeing cloth

The invention discloses a kind of equipment for printing and dyeing cloth, which comprises a dyeing pool, containing dye liquor used for dip-dyeing cloth; a cloth passing roller, used for introducing cloth into the dye liquor; being connected with the dyeing pond to supply liquid Pipes and drain pipes; feeding device, which cooperates with the cloth passing roller, extracts part of the dyeing liquid in the dyeing pool to dissolve part of the solid dye, and sprays it from the bottom of the dyeing pool into the dyeing pool to mix with the original dyeing liquid after the solid dye is dissolved Uniform; squeeze liquid device, used to squeeze out excess dyeing liquid on the cloth after dyeing; drying device, used to pre-dry the cloth after dyeing, and then dry the cloth. The present invention is provided with a drying device, which can pre-dry the cloth during the drying process, and then dry the cloth. The drying process has high drying efficiency. When drying, the temperature of the cloth is raised first, and then the cloth is dried Drying is carried out. During the drying process, it can effectively ensure that the dye on the cloth is deposited on the cloth, and ensure that the color of the cloth is high when it is dried.
Owner:SHAOXING UNIVERSITY

A feed for growing-up grass carp that makes the meat fresh and tender and its preparation method

The invention discloses a feed for growing grass carp and a preparation method thereof, which comprises a certain proportion of fish meal, soybean meal, cotton meal, rapeseed meal, corn, wheat, rice bran, fine bran, distiller's grains, soybean oil and dihydrogen phosphate Calcium and grass carp premix, steps: A, mix fish meal, soybean meal, cotton meal, rapeseed meal, corn, rice bran, wheat, fine bran; B, finely pulverize the raw materials after batching; C, pulverize Put the raw material into the mixer, put the soybean oil, distiller's grains, calcium dihydrogen phosphate, and grass carp premix into the mixer and mix; D, prepare the mixed materials, the modulation process uses a double-layer or three-layer modulator, and the steam It should be saturated dry steam; E. The aspect ratio of the ring die for granulation is greater than 11, and the aperture of the ring die is determined according to the specifications of grass carp; F. Cooling; G. Measuring packaging. The method is easy and simple to operate, the digestibility of the grass carp feed is improved, the feed cost is reduced, and the breeding benefit is improved.
Owner:HUAZHONG AGRI UNIV

Graphene-magnetic nanowire probe and preparation method thereof

The present invention relates to a kind of graphene-Fe 3 o 4 A solid-phase microextraction probe, the substrate of which is a metal wire, is characterized in that Fe is sequentially deposited on the surface of the metal wire 3 o 4 Nanowire arrays and graphene nanocrystals. Fe 3 o 4 Nanowire arrays were prepared by template-hydrothermal method; graphene nanocrystals were deposited by electron cyclotron plasma sputtering. The graphene two-dimensional nanomaterial is fully utilized, which has a large specific surface area, so that the probe has a good extraction and enrichment effect, and the probe has high sensitivity and good stability. Through the template-hydrothermal method, the porous structure of anodized aluminum is pre-obtained on the surface of the metal wire to realize Fe 3 o 4 The controllable growth of the nanowire array ensures the subsequent deposition of graphene nanocrystals. direct magnetic Fe 3 o 4 The nanowire array is deposited between the metal wire and the graphene nanocrystal, and the probe can optimize the extraction effect by applying an external magnetic field during the process of processing the sample, and the method is simple.
Owner:丁道其

A method of manufacturing a semiconductor device

The invention provides a method for manufacturing a semiconductor device and relates to the technical field of semiconductors. In the manufacturing method of the semiconductor device of the present invention, by adding the step of removing the protrusion formed on the outer side of the top of the first side wall after the step of stress proximity technology processing, the gap filling ability can be improved, and the normality of the interlayer dielectric layer can be ensured. deposition, thereby improving the yield of the entire semiconductor device.
Owner:SEMICON MFG INT (SHANGHAI) CORP

Device for manufacturing plating layer of metal multilayer film

The invention discloses a device for manufacturing a plating layer of a metal multilayer film. The device comprises electrolytic baths arranged at intervals along the circumferential direction and power supplies for providing different current for an electrolyte in each electrolytic bath respectively, wherein metal pieces which are in conducting connection with positive electrodes of the respective power supplies extend into the electrolytic baths respectively in a suspended mode; a rotary mechanism comprises a rotating shaft of which the axis extends along the up-and-down direction and a power device for driving the rotating shaft to rotate; cantilever supports which extend along the radial direction of the rotating shaft are fixed to the rotating shaft; hanging frames are arranged on the cantilever supports; a current converter is arranged above the cantilever supports, and comprises fixed contact pieces which are arranged at intervals along the circumferential direction of the rotating shaft and are in one-to-one correspondence and conducting connection with negative electrodes of the power supplies and movable contact pieces which are in conducting connection with the workpieces; and the movable contact pieces are assembled on the side wall of the rotating shaft in an insulation mode and are in pivot friction fit with the fixed contact pieces sequentially. The integral device is simple in structure and convenient to operate, and the plating layer of the metal multilayer film can be manufactured only by hanging workpieces on the hanging frames.
Owner:HENAN UNIV OF SCI & TECH

An adaptive canopy opening airflow assisted spraying device and method

The invention relates to an adaptive canopy opening airflow auxiliary spraying device and method, comprising a spray bar frame, a spraying module, an air supply module and a canopy opening module. The boom frame is used to support and fix other modules, and is connected with the sprayer; the spray module is used to complete the pressure atomization of the liquid medicine, and release the liquid spray droplets to the canopy at a certain angle; The droplets are transported into the canopy; the canopy opening module is used to push the dense branches and leaves on the upper part of the plant to provide a downward migration channel for the droplets; when spraying, the flexible cover is in front of the spray area, and the upper canopy branches are opened Canopy space, while assisting airflow to force droplets into the canopy and improve the deposition and distribution of droplets in the middle and lower parts of the plant. It has the characteristics of simple structure, high reliability, small mechanical damage to plants, and good spraying effect.
Owner:SHANDONG AGRICULTURAL UNIVERSITY

Magnetron sputtering method for depositing thin films

The invention discloses a magnetron sputtering method for depositing a thin film. The method comprises the following steps that within first preset time, process gas is introduced into a reaction chamber; within second preset time, first DC bias is exerted on a target material, and lighting-up is carried out; within third preset time, introducing of the process gas is stopped; within fourth preset time, the first DC bias is increased to be second DC bias, RF bias is loaded on a lower electrode at the speed of 500 W / s-2000 W / s, and the thin film is deposited into a silicon through hole; within fifth preset time, exerting of the DC bias and the RF bias is stopped, and the process gas continues to be introduced into the reaction chamber; the steps are repeated until the thickness of the thin film meets the process requirement. The magnetron sputtering method for depositing the thin film can effectively prevent the lower portion of the reaction chamber from being lightened and ensure that the thin film can deposit in the silicon through hole smoothly.
Owner:BEIJING NAURA MICROELECTRONICS EQUIP CO LTD
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