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

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 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 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.

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 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 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 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.