41results about How to "Avoid uneven growth" patented technology

The invention relates to a high-yield cultivation method for winter wheat in the Huanghuaihai region. The high-yield cultivation method comprises the following five main steps: (1) performing soil preparation and sowing; (2) managing before winter; (3) managing in spring; (4) managing in middle and later stages; and (5) harvesting. According to the technical mode of selecting a winter variety, returning straw to the field, applying fertilizers, performing deep loosening and deep digging, performing rotary tillage and soil preparation, performing broad accurate sowing, mechanically pressing, watering in winter, backwards shifting nitrogen fertilizers, spraying once to prevent pests and diseases, dry and hot wind and lodging, and mechanically harvesting, the high-quality wheat variety which is high in yield, stable in yield and strong in lodging resistance is selected, the soil fertility is raised, seeds are sowed at proper time, the proper pre-winter management is performed, the survival rate of the wheat seedlings is increased, and the uneven growth is prevented; organic fertilizers and inorganic fertilizers are reasonably combined, the technology of backwards shifting the nitrogen fertilizers and applying potassium in stages is applied, the nutrient needs of the wheat at different stages are sufficiently guaranteed, a reasonable group structure is established, the spikelet floret degeneration is reduced, the kernels per spike are increased, the functional period of green leaves is prolonged, the grain filling is promoted, the thousand seed weight is increased and the high-yield breakthrough is realized.

The invention discloses a preparation method of an unbonded-phase ultrafine WC hard alloy. The unbonded-phase ultrafine WC hard alloy comprises less than 0.5 percent by weight of Co, 0.3-1.0 percent by weight of grain growth inhibitor and the balance of WC. The method comprises the following steps: mixing ultrafine WC compound powder containing a small amount of grain growth inhibitor prepared by using a spray thermal reduction method and ultrafine WC-Co compound powder serving as raw materials in a certain ratio; adding less than 0.4 percent by weight of carbon black powder, and performing high-energy ball milling for 36-72 hours; and sintering by using a hot pressing or hot isostatic pressing or air pressure reactive sintering method at the temperature of 1,550-1,750 DEG C for 1-3 hours. The prepared unbonded-phase ultrafine WC hard alloy has superior comprehensive performance, the Vickers hardness is up to 3,000-3,500HV0.05, the fracture toughness is up to 7.1-8.0MPa.m<1 / 2>, the transverse fracture strength is up to 900-1,200MPa, and the grain size is 0.2-0.5 micron. The novel hard alloy can be widely applied to fields requiring high wear resistance and high corrosion resistance.

Provided is an anode for electrowinning such that, in electrowinning using a sulfuric acid-based electrolyte solution, the electric potential for oxygen generation is lower than for a lead electrode, lead alloy electrode, and coated titanium electrode, the electrolysis voltage for electrowinning can be reduced, and the basic units for electric energy can be reduced for a desired metal. This anode can be used as the anode for electrowinning of various types of metal and has superior mass productability. The anode for electrowinning is used in the electrowinning that uses a sulfuric acid-based electrolyte solution, and a catalyst layer that includes noncrystalline ruthenium oxide and noncrystalline tantalum oxide is formed on a conductive base substance.

The invention discloses a lanthanum ferrite perovskite material and a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing lanthanum nitrate, ferric nitrate and water to obtain a mixed salt solution; (2) mixing the mixed salt solution with citric acid to obtain a precursor solution; (3) performing freezing treatment and vacuum freeze drying on the precursor solution to obtain a lanthanum ferrite precursor; and (4) carrying out calcination treatment on the lanthanum ferrite precursor so as to obtain the lanthanum ferrite perovskite material. The method is simple in process, the lanthanum ferrite perovskite material prepared through the freeze drying method performs lattice oxygen activation on oxidizable organic matter at a high temperature, and meanwhile, metal sites on the surface of the material can catalyze C-H bond breakage of tar components, in-situ removal of gasified tar can be achieved, and the tar components are directionally converted into H2, CO and / or C.

The invention discloses a soil fertilizer application device with a controlled using amount for agriculture. The soil fertilizer application device comprises a vehicle body, wherein four angles of thetop part of the vehicle body are connected with vertically-arranged dampers through bolts; the top parts of the four dampers are connected with the same mounting frame through the bolts; the inner top end of the mounting frame is connected with a storage box through a bolt; the bottom end of the storage box is connected with a lower closure head through a flange; and the inner walls of the two sides of the storage box are connected with a horizontally-arranged rotating shaft through bearings. According to the soil fertilizer application device disclosed by the invention, fertilizer can be scattered and mixed through a stirring rod; due to vibration produced by working of a gasoline engine, blocking of a filter screen plate can be effectively avoided, so that the fertilizer can be mixed more uniformly; meanwhile, the discharging stability of the fertilizer application device is improved; the fertilizer filled with the lower closure head can be uniformly distributed into two distribution bins through a division impeller; and by adjusting the power of the gasoline engine, the application amount of the soil fertilizer can be controlled, so that accurate fertilizer application is achieved, and the fertilizer application efficiency is improved.

An embodiment of the present invention relates to a system for controlling the deviation in diameter of a silicon ingot when growing a silicon ingot using the Czochralski method, and the system may comprise: a seed chuck for supporting a silicon ingot which is growing and combined with a seed, also known as a seed crystal; a measuring unit for measuring the load applied to the seed chuck by being connected to the upper surface of the seed chuck via a cable; a load control unit for changing the load applied to a silicon ingot by moving the location of the seed chuck toward the upper or lower portions in a state in which the seed chuck is connected to a cable; and a control unit for controlling the load applied to the silicon ingot by driving the load control unit in accordance with a load value measured at the measuring unit. Accordingly, vibration of the seed is prevented while the growth process of a single crystal ingot is carried out, and thereby the deviation in diameter of a growing single crystal ingot can be reduced.

The invention discloses an OSLO cooling crystallizer capable of preventing crystal scale. The OSLO cooling crystallizer comprises a crystallizer and a cooling device; the cooling device is arranged outside the crystallizer and is communicated with the crystallizer through a pipeline, the crystallizer comprises a raw material feeding pipe, a crystallization chamber and an arc-shaped baffle with anupward opening, the raw material feeding pipe enters the crystallization chamber through the top of the crystallization chamber, and an outlet of the raw material feeding pipe extends into the crystallization chamber; an opening of the arc-shaped baffle plate is arranged upwards and is positioned below an axis extension line of the raw material feeding pipe; the cooling device comprises a circulating pipeline, a circulating pump and a cooler, the crystallization chamber is communicated with the cooler through the circulating pipeline, and the circulating pump is arranged on the circulating pipeline; a nano fluorocarbon coating layer is arranged on the inner wall of the tube pass of the cooler. According to the OSLO cooling crystallizer capable of preventing crystal scale, the problems of scaling of crystals on the inner wall of the tube pass of a cooler and even blockage of a pipeline in the cooling process are solved, the operation efficiency of the device is improved, and the failurerate is reduced.

Provided is a retractable indoor flower culture sill. The flower culture sill includes a circular pipe, the upper end of the circular pipe is sealed, a middle bearing on the top side of the inner wallof the circular pipe is connected to the upper end of a vertical shaft, a rotating shaft of a motor is fixedly connected to the lower end of the vertical shaft, the periphery of the motor is fixedlyconnected to the inner wall of the lower portion of the circular pipe, and first gears are fixedly installed on the upper portion and lower portion of the vertical shaft respectively; first strip-shaped through grooves which are symmetric in the horizontal direction are formed in the left and right sides of the circular pipe, and gear columns are arranged in the first strip-shape through grooves respectively; the upper and lower ends of the gear columns are connected to upper or lower bearings of the corresponding first strip-shaped through grooves respectively, and the first gears are cooperatively meshed with the gear columns respectively. The height of flowerpots can be adjusted according to the height of rays cast by sunlight permeating into the sill in different seasons so that cultured flowers can stay at optimal illumination positions, and waste of resources due to frequent replacement of flower stands are avoided.

The invention relates to a tillage and soil preparation homogenizing tillage implement. The tillage and soil preparation homogenizing tillage implement comprises a power box, two or more rotary blades and a plurality of pressing rollers, wherein a reduction gearbox is connected to the middle of the top of the power box, and a speed reducer in the reduction gearbox is powered by an external tractor and drives the rotary blades to rotate; outer rotary blades of the rotary blades are connected to the end part of a rotary tillage connecting plate in an angle-adjustable manner, and inner rotary blades of the rotary blades are connected to the bottom surface of the rotary tillage connecting plate and are positioned on the inner sides of the outer rotary blades; a plurality of pressing rollers are rotatably connected between a front connecting beam and a rear connecting beam behind the rotary blades in a series connection mode, each pressing roller is in a cylinder shape defined by two or more arc-shaped roller bodies, a gap is formed between every two adjacent roller bodies, roller teeth are arranged on each roller body, an inner supporting piece and an outer supporting piece are connected with the roller bodies and serve as a center disc of a rotating center in a sleeved mode, positioning bolts arranged in the radial directions of the pressing rollers are arranged between a sealing plate at the end of the inner supporting piece and a middle plate of the outer supporting piece in a penetrating mode, and a spring is arranged at the portion, between the sealing plate and the middle plate, of the positioning bolt in a sleeving manner.

The invention relates to a microwave plasma chemical vapor phase deposition device. The device comprises a waveguide device, a reaction cavity, a cooling shade, a shielding shade, and a rotary liftingmechanism; the reaction cavity is arranged below the waveguide device and is connected with the waveguide device; the cooling shade is connected with the reaction cavity and is used for carrying outair cooling heat dissipation on the reaction cavity; the shielding shade is arranged on the outer part of the reaction cavity in a surrounding manner so as to prevent electromagnetic radiation leakagefrom the reaction cavity; and the rotary lifting mechanism is connected with a growth platform arranged in the reaction cavity, so that the growth platform can make linear motion and rotary motion inthe reaction cavity. According to the microwave plasma chemical vapor phase deposition device, a stable growth platform can be provided for a chemical vapor deposition process, and the phenomenon that uneven growth of diamond films is avoided.

The invention discloses a synchronous ferment method of bacillus liquid through microbe fertilizer, which is characterized by the following: seeding spore seed liquid on the seed tank directly; disposing under high temperature; shortening ferment period by 6h; controlling the quantity and proportion of spore easily.

The invention discloses a tobacco floating seedling raising pulling under-film transplanting method, which belongs to the technical field of tobacco planting, and comprises the following steps: (1) preparing a seedling raising substrate; (2) seed pretreatment; (3) sowing; (4) seedling stage management; (5) transplanting seedlings. According to the seedling raising substrate, during seedling raising, nutrients are slowly and durably released, in addition, transplanting is conducted in time, remaining seedlings can still obtain balanced nutrients from the substrate, repeated fertilizer adding and water changing are not needed, seed pretreatment is conducted before sowing, the germination characteristics of seeds are improved, the germination time of the seeds is shortened, and the seedling raising efficiency is improved. Intermittent sound-light wave coupling treatment is carried out before seedling transplanting, cell division and differentiation are promoted, the resistance of seedlings is enhanced, the phenomenon of uneven seedling development is avoided through comprehensive treatment, in addition, the problem of non-uniform growth speed caused by non-uniform light sources in the seedling growth process can be avoided, the survival rate of the seedlings is increased, the transplanting frequency is reduced, and the survival rate of the seedlings is increased. Manpower and material resources are saved.

The invention relates to a preparing method for a diversified metal nanostructure. The preparing method includes the following steps that 1, a single dispersed gold nanoparticle solution is synthesized; 2, a Si / SiO2 substrate is modified; 3, gold nanoparticles are assembled on the surface of the Si / SiO2 substrate; 4, the surface of the Si / SiO2 substrate is coated to accurately control a particle growth size polymer (poly isopropyl acrylamide) to form a protective film on the surface; 5, a metal nanoparticle growth solution is prepared; 6, the Si / SiO2 substrate coated with the film on the surface is soaked in the growth solution so that the metal nanoparticles can grow to obtain the diversified metal nanostructure. In this way, the growth solution can be evenly dispersed onto the surfaces of seed crystal, disorderly and nonuniform growth of the particles can be stopped, the grown nanoparticles can be effectively prevented from falling off, and growth of the nanoparticles is accurately regulated and controlled.

The present invention relates to a novel magnetic biological filtration pool, and belongs to the technical field of environmental protection and water treatment equipment. The novel magnetic biological filtration pool comprises a water inlet grid, a water inlet box, a fore-pump valve, a water inlet pump, a water inlet pipe, an integrated equipment main body part, an after-precipitation water outlet pipe, an after-precipitation water outlet valve, an effluent disinfection device, and an effluent collection pool, wherein the integrated equipment main body part comprises a bioreactor main body portion, a bioreactor attachment portion and a precipitation portion, and the bioreactor main body portion and the precipitation portion are closely and integrally welded and connected through the organic glass wall on the right side of the integrated equipment main body part. According to the present invention, the impurity on the magnetic filler can easily loosen and shed, the back washing is not required, and the filtration pool clogging can be effectively prevented; and the condition of the water flow in the magnetic adsorption filler in the filtration pool and the uniformity of the organism on the filler can be improved, such that the problem of the non-uniform growth of the biological films on the filler front end and the filler rear end in the traditional filtration pool is avoided so as to substantially increase the microorganism utilization rate of the filtration pool filler.

The invention discloses a preparation method of flaky corundum phase alumina powder for electronic material polishing. Firstly, aluminum hydroxide is rapidly dehydrated at a certain temperature to generate rhodium phase alumina; fluoride, boric acid and aluminum hydroxide are proportionally The powder additive is obtained by mixing and grinding; the mixed material is obtained by mixing the powder additive in proportion to the ρ-phase alumina; the mixed material is calcined at 1450-1600°C for 2-12 hours, and then ground, classified and dried , you can get flaky corundum phase alumina powder with a single particle crystal thickness of 1-2 microns and a diameter of 8-25 microns. The powder particles prepared by the method of the present invention have low Na2O impurity content, high corundum phase content, and have a special hexagonal sheet structure. When used as abrasives, they can always be in a state of surface-to-surface combination with the processed surface during the grinding and polishing process. , to achieve the effect of grinding and polishing, and meet the technological requirements of polishing electronic materials such as silicon wafers and electronic flat glass.

Provided is a retractable indoor flower culture sill. The flower culture sill includes a circular pipe, the upper end of the circular pipe is sealed, a middle bearing on the top side of the inner wallof the circular pipe is connected to the upper end of a vertical shaft, a rotating shaft of a motor is fixedly connected to the lower end of the vertical shaft, the periphery of the motor is fixedlyconnected to the inner wall of the lower portion of the circular pipe, and first gears are fixedly installed on the upper portion and lower portion of the vertical shaft respectively; first strip-shaped through grooves which are symmetric in the horizontal direction are formed in the left and right sides of the circular pipe, and gear columns are arranged in the first strip-shape through grooves respectively; the upper and lower ends of the gear columns are connected to upper or lower bearings of the corresponding first strip-shaped through grooves respectively, and the first gears are cooperatively meshed with the gear columns respectively. The height of flowerpots can be adjusted according to the height of rays cast by sunlight permeating into the sill in different seasons so that cultured flowers can stay at optimal illumination positions, and waste of resources due to frequent replacement of flower stands are avoided.

The invention provides a method for preparing large single crystal particles of ternary materials, which belongs to the field of lithium ion batteries. The preparation method mainly includes the following steps: (1) mixing the main element raw materials of the ternary material, a uniform precipitant, a templating agent, and a fluxing agent in deionized water according to a certain stoichiometric ratio to obtain a mixed solution; (2) mixing the mixed solution Transfer to the reaction kettle, keep it at a certain temperature for a period of time to carry out hydrothermal reaction to obtain the corresponding uniform ternary material precursor; (3) the precursor is added to the lithium source and then calcined at a high temperature to obtain single crystal particles. The present invention uses urea as a uniform precipitant, which can slowly and uniformly release CO in the solution 3 2‑ The ion overcomes the uneven local distribution caused by directly adding the precipitating agent from the outside; the template agent and the soluble flux are uniformly added to the precursor by the hydrothermal method, which can effectively prevent agglomeration.

The invention discloses a manufacturing method of a germanium-silicon heterojunction bipolar triode device, which adopts non-selective low-temperature germanium-silicon epitaxial growth, undergoes deposition and etching of sacrificial emitter polysilicon, and dry etching of the outer wall , Wet etching and cleaning, using the selective epitaxial method to form an elevated outer base region and outer wall, and then etch back the sacrificial emitter polysilicon, after cleaning, deposit the emitter polysilicon and dry etch, and finally form the emitter A self-aligned device in which polysilicon and polysilicon in the base area are separated by side walls; compared with the prior art, due to the use of primary side walls, smaller side walls can be formed, which can effectively reduce the series resistance of the base to improve The highest oscillation frequency of the device.