66results about How to "Effective growth control" patented technology

The invention discloses a monocrystal ingot manufacturing device which comprises a main body, a crucible, at least two primary heaters, a crystal seed holder, a thermal insulation component and a bottom heater, wherein the crucible is arranged in the main body; the at least two primary heaters are separately arranged on the circumference of the crucible in the axial direction of the crucible, and independently control the temperature; the crystal seed holder is positioned above the crucible and used for holding seed crystals; the thermal insulation component is arranged around the crucible; and the bottom heater is arranged below the crucible. According to the monocrystal ingot manufacturing device disclosed by the embodiment of the invention, the at least two primary heaters which independently control the temperature can greatly reduce the convection in the molten mass, thereby effectively improving the crystal quality. In addition, in the later period of the crystal growth, the liquid level of the molten mass lowers, and at this time, the power of the upper heater can be greatly reduced on the premise of keeping the power of the lower primary heater unchanged to ensure that the temperature of the molten mass is not decreased, thereby effectively lowering the power consumption in the whole crystal growth process and preventing the phenomenon of pot adhesion due to the overlow temperature of the molten mass.

The invention relates to a multi-functional peanut growth inhibitor which is composed by the weight ratio of following components, paclobutrazol to prohexadione calcium to uniconazole is 3: 1.2-1.5: 0.8-1.2. The invention not only can effectively control the growth of the vegetative part of the peanut on the ground, can prevent the peanut from overgrowing and lodging, but also can effectively avoid the side effect brought by general growth inhibitor (e.g. paclobutrazol). At the same time, in the growth anaphase of the peanut, the invention can remarkably improve LAI (leaf area index), effective LAI, leaves membrane-lipid protective enzymatic activity (SOD, POD, CAT), Pr (soluble protein) content and so on, can reduce MDA content and can postpone the senescence rate of peanut leaves. More importantly, the invention can remarkably improve the output of pods. The production can be increased by 16.6 percent- 23.0 percent more than the production without spraying any inhibitor, and can be increased by 7.6 percent- 13.7 percent more than the production only spraying paclobutrazol. The invention solves the problem that the overgrowth and presenility can not be prevented synchronously in the production process of the peanuts.

The invention discloses valsartan and amlodipine compound preparation and a preparation method thereof. In the invention, valsartan or pharmaceutically acceptable salts thereof and amlodipine or pharmaceutically acceptable salts thereof are used as active ingredients, the valsartan and a pharmaceutical auxiliary material are mixed and rolled by a rolling process to form a pressed material; the pressed material is sieved to obtain a granular material; and the granular material is mixed with amlodipine to form tablets or capsules. In the invention, the valsartan and the auxiliary material are granulated first and then mixed with the amlodipine equally, so the liquidity of the material is improved; and the prepared product is very stable, and the process is simple and suitable for industrial production.

The invention discloses a preparation method for composite high-copper tungsten-copper nanopowder. The preparation method comprises the following steps: first preparing copper nitrate, ammonium meta-tungstate and oxalic acid solutions, then uniformly mixing the three prepared solutions according to the molar ratio of copper nitrate, ammonium meta-tungstate and oxalic acid of 1:(0.04-0.2):(1-1.5), adding dropwise an NaOH solution at a mass concentration of 30 to 60 percent into a mixed solution until the Ph value of the mixed solution is less than or equal to 3, performing reaction on the prepared mixed solution for 2 to 4h with stirring at 60 to 90 DEG C, filtering and washing a reaction product, drying the reaction product for 18 to 20h at 80 to 95 DEG C to obtain a precursor, and finally sequentially performing calcination, reduction and cooling on the prepared precursor to obtain granular high-copper tungsten-copper powder. The preparation method is easy to operate, and composite high-copper tungsten-based micro-nano powder with high dispersibility and uniformity can be effectively prepared.

The invention discloses a perovskite solar cell light absorption layer, and the light absorption layer is a film which is obtained by the spinning coating of organic lead halide perovskite precursor solution with organic carboxylic acid on a proper substrate and the heating processing. The organic carboxylic acid is used for controlling the nucleating of organic lead halide perovskite and the growth of crystal, thereby improving the interface contact characteristics of a perovskite light absorption layer and an electron transmission layer. Through the coordination and electrostatic interaction between carboxyl and lead ions, the nucleating of the organic lead halide perovskite light absorption layer and the growth of crystal are controlled effectively, and the organic lead halide perovskite light absorption layer which is large in area, is smooth, is high in quality of crystalline state, is excellent in electrical performance and is stable is prepared, and good ohmic contact between the perovskite light absorption layer and the electron transmission layer is formed. The solar cell prepared in the invention can improve the efficiency and reduce the cost. The preparation technology is simple, and the repeatability is good. The batch production of the solar cell can be achieved.

The invention belongs to a method and system for self-cleaning water-saving type comprehensive vehicle washing for a civil construction site. The method comprises the steps of foundation ditch precipitation well and drainage ditch system construction, cofferdam pool construction, construction of a wheel washing machine base, a water storage pool, a wheel washing pool, a filtering pool and a settling pool and the like. The system comprises the wheel washing pool used for conducting primary cleaning on tires of a muck vehicle and sludge on a vehicle body, the wheel washing machine base, a wheel washing machine, a foundation ditch precipitation well, a foundation ditch drainage ditch, a cofferdam pool, the water storage pool, the filtering pool and the settling pool. The method and system for self-cleaning water-saving type comprehensive vehicle washing for the civil construction site have the advantages that the method and structure are novel and simple, the vehicle washing efficiency is high, the vehicle washing effect is good, and environment beautifying, energy conservation, environment protection and water recovery circulation utilization are good.

A method for monitoring culture of crops includes setting multigroup different culture conditions and sensing key control point data of corps under each culture condition, comparing key control point data according to growth state of each group corps under different culture condition for obtaining data threshold of each key control point for realizing to obtain data threshold automatically, analyzing said data to obtain relation of key control point to growth state of crops in order to realize effective control on growth state of crops.

The invention provides a method for sowing alpine rhododendron by utilizing sphagnum, comprising the following steps: 1. paving sphagnum with thickness of 5-10cm on the bottom of the alpine rhododendron sowing bed and paving sterile matrix with thickness of 5-10cm on sphagnum; 2. spraying enough water to the sterile matrix to ensure sphagnum below the sterile matrix to be full of water until the water in the sterile matrix and sphagnum is saturated; and 3. sowing the alpine rhododendron seeds on the surface of the matrix, thus completing sowing the alpine rhododendron. In the method, by utilizing the characteristic that sphagnum and liverwort restrict each other in the growth period, growth of liverwort can be effectively controlled in the sowing and growth processes of the alpine rhododendron seeds, thus providing good ecological environment for growth of the alpine rhododendron seeds. Besides, sphagnum has super-strong capability of retaining water, thus stably retaining the water in the matrix for long term and saving labor.

The invention discloses a bulk phase catalyst and a preparation method thereof, and a hydrogenation catalyst containing the bulk phase catalyst. The preparation method comprises the following steps: 1, preparing a mixed solution from a compound containing a group VIII element and a compound containing a group VIB element, adjusting the pH value of the mixed solution to 6-11, and then adding a surfactant; 2, putting the mixed solution added with the surfactant obtained in the step 1 into a closed container, and carrying out a reaction for at least 10 minutes at a reaction temperature of 5-75 DEG C; and 3, heating the mixed solution to 80-200 DEG C, carrying out a reaction for at least 1 hour, filtering, and drying to obtain the bulk phase catalyst. According to the invention, a seed crystalgeneration reaction is introduced in the preparation process of the catalyst, and the surfactant is added, so that the catalyst provided by the invention has high hydrogenation activity due to the introduction of the process.

The invention relates to a method for preparing a carbon-supported core-shell compact copper iron-copper-platinum catalyst for a fuel cell, and belongs to the technical field of electrochemistry. Themethod comprises the following steps: (1) preparing a copper iron mixed liquid; (2) preparing a carbon-supported copper iron alloy slurry; (3) preparing carbon-supported copper iron-copper core-shellparticles; (4) preparing a carbon-supported copper iron-copper-platinum core-shell catalyst slurry; (5) preparing carbon-supported copper iron-copper-platinum core-shell particles; and (6) preparing the surface compact core-shell carbon-supported copper iron-copper-platinum catalyst. The catalyst has the advantages of low platinum load, good catalytic activity, high chemical stability and the like, and promote further development of fuel cells.

The invention provides a pesticide plant growth regulator composition containing flumetralin and paclobutrazol as active ingredients and applied to peach trees for achieving the purposes of controlling tips, promoting blossom and preventing fruit from drop. The weight part ratio of flumetralin to paclobutrazol in the composition is (20:1)-(1:20) and the total weight of flumetralin and paclobutrazol is 5%-70% of the weight of the composition. The pesticide plant growth regulator composition is capable of effectively controlling the growth of summer shoot and autumn shoot of peach trees and achieving the purposes of controlling tips, promoting blossom and preventing fruit from drop and is a labor-saving, time-saving, economical and effective way.

The invention discloses a pathogenic vibrio phage VmYZU10474 and application thereof. The phage is identified to have unique genome structure characteristics, belongs to a novel phage, and has been preserved in China Center for Type Culture Collection on August 12, 2020 with the preservation number of CCTCC NO: M 2020417. The phage capable of efficiently cracking vibrio is obtained, can inhibit pathogenic vibrio in various matrixes, such as mimicus vibrio, vibrio parahaemolyticus, vibrio alginolyticus and vibrio fluvialis, and can be applied to preparation of bacteriostatic agents for controlling pathogenic vibrio pollution in aquatic products and environments thereof. The prepared bacteriostatic agents can effectively control growth of pathogenic vibrio in culture media, fish juice and aquatic product samples, and meanwhile can effectively inhibit pathogenic vibrio pellicle formation on solids such as equipment and vessels; and in addition, the pathogenic vibrio phage VmYZU10474 is simple to prepare and convenient to use, and the risk that pathogenic vibrio is spread and causes food-borne diseases can be reduced.

The invention belongs to a low-carbon energy-saving method for treating polluted water quality of a lake or a landscape lake, comprising an aeration type aerobic device, floating landscape aerobic devices, aquatic floating plants and cultured fishes, wherein the aeration type aerobic device is positioned in a water inlet of the lake or the landscape lake; the floating landscape aerobic devices are positioned in the lake or the landscape lake at intervals; the aquatic floating plants are distributed on the periphery of the lake or the landscape lake; and the cultured fishes are positioned in the lake or the landscape lake. The method mainly uses biological natural purification as a main method and mechanical purification as an auxiliary method, supplies power by using a clean carbon-free energy source, circularly increases the fluidity of a water body, can effectively purify polluted water, prevents phycophyta growth, improves the living environment of organisms in water and always retains aquatic oxygen content in a higher level. The invention has the advantages of simple operation, low treatment cost, low-carbon energy saving, no pollution, no noise, attractive appearance, environmental protection and good treatment effect.

The invention discloses a pruning method of castanea mollissima bearing trees and belongs to the technical field of pruning of castanea mollissima trees. According to the pruning method, pruning is conducted after leaves of the castanea mollissima trees completely fall each year. The pruning method comprises the following steps of pruning of the castanea mollissima trees in the early fruiting stage; pruning of the castanea mollissima trees in the full bearing stage, wherein pruning of strong bearing branch groups, treatment of reserved mother branches and thinning of nutrient branches are conducted. According to the growth characteristics of the castanea mollissima trees, the pruning method of the castanea mollissima bearing trees is provided. The pruning method is simple in technology andeasy to operate, reasonable distribution of the shapes and branches of the castanea mollissima trees can be guaranteed, thinning and reservation of the castanea mollissima trees are abstinent, the ventilation and air permeability are good, so that crowns are kept balanced, and leaf areas are increased; meanwhile, plant diseases and insect pests can be reduced, the tree potentials are restored tobe strong, the fruit yield is high, the quality is good, and the purposes of convenient management and increment of production and income are achieved.

The present invention discloses a treatment method for waste gas discharged from a sewage farm, including the following steps of: heating up waste gas discharged from a sewage farm for a temperature rise of 2 to 40 DEG C, and discharging via a desulfurization section and a hydrocarbon concentration homogenization section. A solid desulfurizing agent is used in the desulfurization section, and a substance having a concentration homogenization effect is used in the hydrocarbon concentration homogenization section. Compared with the prior art, the method of the present invention has the advantages of high treatment efficiency, low cost, and stable operation of an apparatus, so the method is the most suitable for purification treatment of the waste gas discharged from various biochemical aeration sewage farms.

A preparation method of a porous wood carbon modified metal lithium anode material comprises that following steps: (1) taking wood of transverse cut balsa wood, cutting into wood chips; (2) carbonizing and activating the balsa wood chips at high temperature in a protective atmosphere to obtain activated balsa wood carbon material; (3) preparing a metal nitrate or metal acetate solution, and soaking the balsa wood carbon material in the solution for 1-3h, and then putting the material into a tubular furnace, loading the polytetrafluoroethylene powder into a ceramic boat and placing the polytetrafluoroethylene powder on the front part of the air inlet, and calcining the polytetrafluoroethylene powder at high temperature to obtain a metal fluoride modified balsa wood carbon material; and (4)depositing metal lithium into the pore channel structure of the metal fluoride modified balsa wood carbon material by electrodeposition under the protection of argon gas, thereby obtaining the modified metal lithium anode material. The invention can effectively solve the problems of low coulomb efficiency and short cycle life of the battery caused by the growth of metal lithium dendritic crystal in the charging and discharging process of the battery of the metal lithium negative electrode material.

The invention provides a zinc alloy for hot dip. By taking the total mass of the zinc alloy for the hot dip as a reference, the zinc alloy for the hot dip comprises 0.2-20.0wt% of Al, 0.1-0.3wt% of Ni, 0.1-0.5wt% of Mn, 0.05-0.5wt% of Sn, 0.05-0.2wt% of Cr, 0.01-0.15wt%RE (La and Ce mixture), and the balance Zn and unavoidable impurities carried by the zinc alloy. The zinc alloy for the hot dip can reduce or maintain the contents of harmful impurities and the iron element of liquid zinc of a galvanizing pot within a low range, the quantity of zinc dross generated by galvanization is reduced, an alloy coating formed after the hot dip is uniform in thickness, has no color difference, sandelin effect or redundant list edges, and has relatively high coating quality.

The invention discloses a high-lysis klebsiella pneumoniae bacteriophage RKP-KP-20007 and application thereof, the host of the high-lysis klebsiella pneumoniae bacteriophage RKP-KP-20007 is klebsiella pneumoniae, observation through an electron microscope shows that the head of the bacteriophage is an eicosahedron and is in stereo symmetry, the length of the head is 72.640 nm, the length of the tail of the bacteriophage is 177.797 nm, the bacteriophage is a long-tail bacteriophage family with the tail, and the preservation number is CGMCC No. 22495. The Klebsiella pneumoniae bacteriophage RKP-KP-20007 has a strong cracking effect on Klebsiella pneumoniae in a poultry breeding environment, can be used for efficiently treating Klebsiella pneumoniae diseases caused by pathogenic bacteria in poultry breeding, and can be used as a disinfectant. A bacteriophage source is provided for industrial, large-scale and programmed production of bacteriophages and treatment of poultry breeding bacterial diseases caused by klebsiella pneumoniae.

The invention discloses a carbon nanosphere and a preparation method and application thereof. The carbon nanosphere includes carbon nano particles and a plurality of carbon thorns growing on the carbon nano particle surface, the carbon nano particles and the carbon thorns make the carbon nanosphere hedgehog-like. The preparation method of the carbon nanosphere comprises the steps of vacuum reaction chamber preheating, introduction of a protective gas and introduction of an organic carbon source into a vacuum reaction chamber for carbonization reaction. Due to growth of the plurality of carbon thorns on the carbon nano particle surface, the carbon nanosphere is hedgehog-like, has a rich surface and a large surface area, and is uniform in particle size. The preparation method has the advantages of simple process, easy control and high production efficiency.

The invention discloses a vibrio bacteriophage PC-Liy1 with cross-species lysis capability as well as a preparation method and application of the vibrio bacteriophage PC-Liy1. The bacteriophage belongs to the myophage family (Myoviridae). The vibrio phage disclosed by the invention has a wide host range and a relatively high splitting rate, and can be used for splitting vibrio alginolyticus, vibrio parahaemolyticus, vibrio cholerae, vibrio mimicus, vibrio neokarst and vibrio shewanii. The bacteriophage is high in environmental adaptability and has stable and good biological characteristics, and a biological bacteriostatic agent prepared from the bacteriophage can effectively control growth of vibrio in water and other environments.

The invention relates to a method for improving the uniformity of breeding geese in a reserve period. The method comprises the following steps: (1) feeding geese with similar weights in groups, separately feeding male geese and female geese, and ensuring that the geese have basically the same ingestion; (2) carrying out daily limited feeding according to the following mode: the feeding frequency is three times every day; the first feeding time is 6 o'clock to 8 o'clock in the morning, and the feeding amount accounts for 15%-25% of the whole-day feed amount; the second feeding time is 11 o'clock to 12 o'clock in the noon, and the feeding amount accounts for 15%-25% of the whole-day feed amount; and the third feeding time is 5 o'clock to 6 o'clock in the afternoon, and the feeding amount accounts for 50%-70% of the whole-day feed amount; and (3) carrying out weighing every Sunday, comparing an obtained weight with a standard weight specified by the goose variety standard, and adjusting the whole-day feed amount. The method provided by the invention has the following advantages: growth of the breeding geese in the reserve period can be effectively controlled, so the weight of the breeding geese is slightly decreased, and the breeding geese are good in uniformity; the breeding geese with strong physique and good production performance can be bred; the production capacity of the breeding goose is improved; and the effective utilization period of the breeding geese is prolonged.

The invention discloses a hot door device which comprises: a first hot door apparatus which is provided with at least two oppositely-arranged first door bodies; a first drive unit which is used to drive each first door body to move towards each other or away from each other; a second hot door apparatus which is arranged on the downside of the first hot door apparatus and is provided with at least two oppositely-arranged second door bodies, wherein there is an included angle between the opening direction of the second hot door apparatus and the opening direction of the first hot door apparatus; and a second drive unit which is used to drive each second door body to move towards each other or away from each other. Through at least two split-level hot door apparatuses, when the two hot door apparatuses simultaneously open, an opening area gradually expands from the center to the periphery so as to form a temperature conducting area, opening degree of which can be controlled. Therefore, crystal growth more accords with technological requirements. By the adoption of the hot door device, temperature gradient of a crystal growth area is effectively controlled, temperature radiation quantity is controlled, consumption of heat energy is minimized, and the purpose of saving electric energy is achieved. The invention also discloses a polycrystalline ingot furnace with the above hot door device.

The invention discloses a method of preparing Mo-Cu alloy through field-assisted activated sintering and belongs to the technical field of refractory metal processing. The method comprises the steps that molybdenum powder and copper powder are subjected to wet grinding and vacuum drying according to a certain component proportion to obtain Mo-Cu mixed powder, then the Mo-Cu mixed powder is put in a die to be pressed into a pressed blank, then the pressed blank is put in sintering equipment, and the Mo-Cu alloy is prepared through rapid sintering at a relatively low temperature with a specific sintering process. Aiming at the problems of Mo-Cu alloy preparation in the prior art, the invention provides the method of preparing the Mo-Cu alloy by field-assisted activated sintering, so that the sintering process can be conveniently and effectively controlled, and the compact Mo-Cu composite material with fine grains can be quickly obtained at the relatively lower temperature. In the method, activated sintering is carried out under the combined action of three physical fields, namely an electric field, a thermal field and a force field, so that a compaction process of a pressed blank is quickly completed at the relatively low temperature; and the preparation process is easy to control, activated elements do not need to be added in the sintering process, and then the quality of a product is improved.

The invention discloses a preparation method of boron carbide nanoparticles, belongs to the field of new materials, and aims to solve the problems of high energy consumption, environmental pollution,high cost, low product purity and large particle size in the existing preparation of boron carbide. The method comprises the following steps: 1, mixing a boron source, a carbon source and an additiveto obtain a mixture; 2, preparing slurry; 3, heating and drying the slurry in an HCl atmosphere to obtain a dry mixture; and 4, heating the dried mixture in an inert atmosphere to obtain the boron carbide powder. The boron carbide particles prepared by adopting the method have the advantages of nanoscale, uniform particle size, high purity, low energy consumption in preparation, no environmental pollution and low cost, and can be industrially produced in batches. A uniform mixture is formed under the cavitation action of ultrasonic waves. Under the action of a shape regulator MgCl2, the growthprocess of boron carbide is effectively controlled, and the preparation of nanoscale particles is realized. The size of the generated boron carbide particles can be regulated and controlled accordingto the ratio of reactants and the addition amount of the shape regulator. The preparation method is applied to preparation of the nano boron carbide particles.

The invention discloses a sea urchin offspring seed cultivation method suitable for north multi-algae sea cucumber pen aquaculture. The method includes the following steps: a, catching hemicentrotus pulcherrimus and strongylocentrotus intermedius at the beginning of March, wherein the specification of the hemicentrotus pulcherrimus and the strongylocentrotus intermedius is greater than 50 g; and synchronously heating the hemicentrotus pulcherrimus and the strongylocentrotus intermedius in a seed-raising room to promote maturity, performing constant temperature cultivation on the hemicentrotus pulcherrimus at the temperature of 10 DEG C, and performing constant temperature cultivation on the strongylocentrotus intermedius at the temperature of 18 DEG C; b, controlling the accumulated temperatures of the hemicentrotus pulcherrimus and the strongylocentrotus intermedius, and controlling the mature standard time difference between the hemicentrotus pulcherrimus and the strongylocentrotus intermedius within the range of + / -3 days; c, using the strongylocentrotus intermedius as male parents and the hemicentrotus pulcherrimus as female parents to perform crossbreeding at the beginning of May after the accumulated temperatures of the hemicentrotus pulcherrimus and the strongylocentrotus intermedius reach a standard, and shortening the cultivation time of the sea urchins by feeding artificial feed after young sea urchins are attached; d, performing pool aquaculture when the diameter of the young sea urchins reaches more than 1 cm, and using seaweed as bait in aquaculture; and e, catching the sea urchins for sell after pool aquaculture is performed for 18 months.

The invention provides a method of controlling weeds in a no-tillage dry direct seeding paddy rice field. The method comprises steps of dry-spreading paddy rice seeds before wheat harvest, stubble cleaning with glufosinate-ammonium mixed with water after wheat harvest, watering three days after glufosinate-ammonium is sprayed until straws are fully immersed into water, and irrigating and conducting high-yield cultivation management after field water naturally dries and two-leave period after paddy rice sprouts out. The wheat is harvested with stubble height of 15 to 18cm; and after the wheat is harvested, wheat straws are smashed and evenly scattered into the field. Weed growth in the dry direct seeding paddy rice field can be effectively controlled; comprehensive field weed controlling rate can reach 90% above, and direct seeding paddy rice weeds can be effectively controlled via one time stubble cleaning work, so paddy rice growth can ripe early and output of dry direct seeding paddy rice can be improved; fertilizer use can be reduced by over 20%; glufosinate-ammonium with concentration of 20% is utilized for once, so fertilizer use times can be reduced by one to two times compared with a common direct seeding paddy rice field weed eliminating method; and chemical pesticide use for weed elimination can be reduced by over 50% compared with a common weed elimination method.

A method for monitoring culture of edible mushroom includes setting key control point data of multigroup edible mushroom, using control device to set relevant culture conditions according to said data, obtaining data threshold of each key control point by comparing key control point data on each edible mushroom group according to growth state under each culture condition for realizing to obtain data threshold of key control point automatically, analyzing obtained data to work out relation of key control point to growth of edible mushroom in order to realize effective control on growth of edible mushroom.

The invention discloses a preparation method of a tacrolimus solid dispersion, a quick-release pharmaceutical composition and application, and the preparation method of the tacrolimus solid dispersion comprises the following steps: adopting a fluidized bed one-step forming process, taking a carrier material as a substrate, carrying out spray granulation by using a tacrolimus solution, and after the granulation is completed, continuously drying in the fluidized bed to obtain the dried solid dispersion. The prepared solid and split particles are sieved and then directly mixed with other auxiliary materials to be filled into capsules to prepare the quick-release capsules, the problems of acetone solvents and residues are solved, the temperature in the whole preparation process is controlled to be not higher than 50 DEG C, the increase of related substances can be effectively controlled, and compared with original commercially-available products, the product has the same release behavior, and is good in release uniformity, stable in quality, lower in production cost and beneficial to industrial production.