56results about How to "Good field application effect" patented technology

The invention provides an acidic soil conditioner, and a preparation method and application thereof. The acidic soil conditioner comprises the following components in part by weight: 4 to 8 parts of composite bacterial agent, 80 to 90 parts of acid adjusting factor, 3 to 7 parts of chelate and 2 to 6 parts of organic matter. The acidic soil conditioner adjusts the pH value of soil, promotes formation of soil aggregate structures, improves the physical property of the soil, creates a good ecological environment for the growth of plants, increases organic matters, calcium, magnesium and silicon and the activities thereof, promotes healthy growth of crops, enhances stress resistance and prevents diseases and pests. By adoption of the composite bacterial agent, the constitution of a microflora of the soil can be improved, the microbial activity of the rhizosphere of the crops is enhanced, mineralization of organic pollutants is accelerated, growth of the plants is promoted, and absorption of degradation products and bioremediation of the polluted soil are accelerated. The acidic soil conditioner has no toxicity, residues and pollution, accords with the development tendency of organic pollution-free agriculture and has great popularization and application values.

The invention discloses a self-learning method for improving a forecasting precision of an overall length coiling temperature of strip steel, belonging to the field of automatic control technologies of hot-rolled strip steels. The self-learning method is mainly characterized by comprising the following steps of: 1) collecting control parameters of each section of the strip steel in a coiling temperature control process; 2), determining the number of lag sections after the strip steel is rolled; 3) figuring up self-learning lag factors between the sections; and 4) comprehensively considering self-learning coefficients of the strip steel between the sections, self-learning coefficients of the rolled strip steel between the sections and the self-learning lag factors between the sections when the coiling temperature of each section of the sequent strip steel is forecasted. The self-learning method, related by the invention, can solve the lag problem of self-learning between the sections of the strip steel well, and the forecasting precision of the coiling temperature of each section of the overall length of the strip steel is remarkably improved.

The invention discloses a non-burnt brick prepared from unwanted soil residues and a preparation method thereof. The non-burnt brick comprises, by mass, 1200 to 1500 parts of unwanted soil residues, 200 to 400 parts of cement, 10 to 30 parts of a polymerizer, 1 to 15 parts of a curing agent and 1 to 30 parts of an additive. The preparation method for the non-burnt brick comprises the following steps: drying and crushing the unwanted soil residues, then blending the crushed unwanted soil residues with the cement and the polymerizer and carrying out granulation to form stable soil particles which are used for replacing conventional sand and stone as a framework material for the non-burnt brick; and mixing the stable soil particles with the cement, the curing agent and the additive to prepare the non-burnt brick. The non-burnt brick prepared from unwanted soil residues has a strength grade of Mu5.0 to Mu30 and a softening coefficient of 80 to 98%, and the water absorption rate, durability, radioactivity and the like of the non-burnt brick meet standard requirements. The invention has the beneficial effects that unwanted soil residues are recycled; environmental pollution is reduced; natural resources are saved; production cost for constructional bricks is lowered; the preparation method is simple and convenient; and substantial social benefits and economic benefits are produced.

The invention discloses a prodenia litura gene engineering virus No.3 and a building method thereof, in particular relates to a prodenia litura gene engineering virus used for carrying out deficiency and recombination on a wild type virus (SpltMNPV II) by utilizing a gene engineering method. The genome of the virus is deficient in an egt gene, namely an ecdysteroid UDP (uridine diphosphate) glucosyltransferase gene; and at the site of the deficient egt gene, a BmKITa1 gene controlled by a wild type virus, namely an early gene-1(ie-1) starter, and a marker gene, namely an enhanced green fluorescent protein (egfp) gene, which is controlled by the wild type virus, namely a polyhedron gene (ph) starterare inserted. The prodenia litura gene engineering virus No.3 disclosed by the invention has the advantages of faster insecticidal speed, less dosage effect and better field application effect compared with the wild type virus. Compared with the prior art, the prodenia litura gene engineering virus No.3 provided by the invention has less dosage effect and lower LT50 at low dose (105 polyhydral bodies/larva).

An inertia friction welding clamping mechanism for a front drum of an engine adopts a clamping structure way of combining a mechanical and hydraulic system with low-temperature grease expanding mechanism; a tailstock clamp is used for clamping a processed part and adopts a mechanical clamping structure with an inner cone and an outer cone; in order to enhance the welding reliability, an elastic half ring is adopted at the part welding part to tighten the processed part to enhance the strength to control the part welding deformation; and a main shaft clamp adopts a low-temperature grease expanding mechanism, seals a sealing structure applying an O-shaped seal ring and a semi-circular arc-shaped seal rubber ring accordingly, and is meshed with equipment coil circuit connector correspondingly. The friction welding clamping mechanism improves the rotor connector quality and the production efficiency remarkably, ensures the processing precision of the part and the service life of the friction welding clamping mechanism, reduces the manufacturing cost of the tool, improves the tool using reliability, and meets the production filed and process requirements.

The invention discloses an RH nitrogen-blowing alloying process capable of accurately controlling the nitrogen content of a nitrogen-containing steel grade. The RH nitrogen-blowing alloying process capable of accurately controlling the nitrogen content of the nitrogen-containing steel grade comprises the following steps: desulfurized molten iron and scrap steel are smelted in a converter, oxygen is blown from the top, and nitrogen is blown from the bottom; LF refining and RH vacuum refining are sequentially carried out on molten steel, a mechanical pump vacuum system is adopted for RH, specifically, argon/nitrogen switching is carried out on RH circulation gas, the nitrogen flow is 90-150 Nm<3>/h, the nitrogen pressure is 1.0-1.8 Mpa, RH vacuum air-pumping is carried out, the pressure is reduced to 273 Pa or below from atmospheric pressure, and RH air-pumping lasts for 5-10 min; temperature measurement and sampling are carried out, and the chemical components and the nitrogen component content of the molten steel are analyzed; the component content of the molten steel is adjusted according to the sampling analysis result, the RH vacuum degree is adjusted to 4-15 kpa, nitrogen is rapidly increased in the molten steel, and the average nitrogen increasing amount is 3.0-3.50 ppm/min; and after the molten steel meets the technical requirements of the steel grade, the RH is finished, re-pressing is carried out, a steel ladle is opened for blowing argon from the bottom, and calcium treatment in a metal calcium feeding line is carried out. According to the invention, the nitrogen content fluctuation of the molten steel can be accurately controlled to be +/-5ppm, the technical requirements of the steel grade are met, the quality of the steel grade is ensured, and the production cost is reduced.

The invention belongs to the technical field of microorganism oil extraction, and particularly relates to a screening method of a microorganism long-acting activating agent for oil extraction. The screening method specifically comprises the following steps that components of the long-acting activating agent are screened under the aerobiotic and anaerobic conditions; the concentration of the long-acting activating agent is optimized; physical modeling evaluation is performed on the long-acting activating agent, wherein physical modeling evaluation comprises injectability evaluation and oil displacement efficiency evaluation; finally the oil reservoir microorganism long-acting activating agent system for oil extraction is obtained. The method is simple and high in operability and pertinency; the long-acting activating agent system obtained through the screening method not only can meet the nutrition requirements of microorganisms near a wellbore, but also can meet the nutrition requirements of microorganisms at the deep of an oil reservoir, is good in application effect and can improve the oil displacement efficiency of the microorganisms, and therefore the long-acting activating agent can be widely applied to the technical field of microorganism oil extraction.

The present invention provides a polymer degradation agent, which comprises, by mass, 70% of ammonium sulfate, 5-10% of ammonium persulfate, 1-3% of amino trimethylene phosphonic acid, 1-2% of ethylenediaminetetraacetic acid, 3% of an emulsifying agent, 2% of a surfactant, and the balance of water, wherein the emulsifying agent is OP, and the surfactant is dodecyl dimethyl benzyl ammonium chloride. With the polymer degradation agent, free radicals can be produced at a lower temperature, the polymer solution with the high viscosity can be rapidly degraded into the solution with the viscosity close to the viscosity of water, pollution and damage of the polymer solution on the stratum can be effectively relieved, and the seepage capability of the polluted stratum can be recovered. In addition, the polymer degradation agent has characteristics of good site application effect, simple process, and low condition and equipment requirement, and is easy to promote and apply.

The invention discloses a transport equipment steel ladle path compilation method of considering production equipment scheduling plan constraints. According to the method, indexes that a steel ladle transport path is shortest, lifting and laying frequency is minimum, interval time between two successively adjacent steel ladles in the same path is longest, a steel ladle transport temperature drop is minimum, and transport time is minimum are taken as performance indexes, conditions that the loading weight of a crown block on the path is greater than the weight of the steel ladle laden with molten steel, transportable time of the crown block on the path is in a specified range of a furnace charge plan, a path length is in an available path length range determined by the maximum speed of the crown block and the furnace charge plan, and a temperature drop of the transported molten steel in the path does not exceed a specified temperature range of a furnace charge process are taken as constraint conditions, steel ladle transport paths are taken as a decision variable, and a mathematical model of the problem is constructed; the multi-priority-based heuristic compilation method of the steel ladle path is designed; and steel ladle path priority is determined and the available paths are sorted according to importance degrees of the performance indexes on the bases of the layout of a plant area and the furnace charge plan, and the steel ladle transport path is decided.

The embodiment of the invention provides a method, device and equipment for acquiring reserve volume of a carbonate rock fracture-cavity unit with a closed water body. The reserve volume of a reservoir body fracture-cavity unit with the closed water body can be acquired rapidly by acquiring crude oil accumulative output quantity Np, formation water accumulative output quantity Wp, output formationcrude oil volume coefficient Bo, output formation water volume coefficient Bw, crude oil compression coefficient Co, water compression coefficient Cw, oil well production pressure difference delta Pand original oil volume coefficient Boi and acquiring parameters of the fracture-cavity unit according to the volume percentage A of the closed water body of the fracture-cavity unit on the fracture-cavity, and the dynamic reserve volume is pushed finally, so that the problems that the reserve volume of the carbonate rock fracture-cavity unit with the closed water body is difficult to acquire andthe accuracy is low are effectively solved, good on-site application effect is achieved, basis is provided for carbonate rock oil well management and convenience and economic property are achieved.

The invention discloses a conductive epoxy resin for pipeline repair and a pipeline online repair method. Specifically, two slidable sealing clamps in close contact with the pipeline inner wall are utilized to seal the repairing conductive epoxy resin containing sacrificial anode material powder particles between the clamps, gas pushes the clamps to move forward, and the filler between the clamps is extruded to fill pipe wall corrosion pits and quickly bond and solidify to the pipeline. The sacrificial anode material is employed to perform anode protection on the corrosion parts inside the pipeline, thus avoiding further corrosion of pipeline corrosion defect positions and ensuring the mechanical strength of the pipeline.

The invention discloses a retractable light self-suction aviation fire extinguishing device and a use method thereof. The device comprises a fire extinguishing agent adding device, a light telescopic water tank and a water suction device connected to the light telescopic water tank, wherein the light telescopic water tank comprises a light telescopic water tank fixing frame arranged at the lower portion of a cabin of a helicopter, a foldable and retractable soft water bag and a throwing device arranged at the bottom of the soft water bag, the water suction device comprises a water suction pipe capable of extending downwards, when water is not taken, the light telescopic water tank and the throwing device are folded and retracted in the light telescopic water tank fixing frame, when water is added, the water suction device sucks water from the lower portion into the light telescopic water tank by means of the water suction pipe so as to enable the light telescopic water tank to stretch downwards, and in a flying and water storage state, the light telescopic water tank and the throwing device are suspended in air after being stretched. According to the device, the water tank can be retracted when no water is stored, so that a height is very small, rising and falling of the aviation fire extinguishing device are not affected, and an application range is wider.

The invention relates to a water injection fracturing device and method while drilling, belongs to the field of coal mine underground drilling and fracturing engineering, and particularly relates to the water injection fracturing device and method while drilling. The water injection fracturing device and method while drilling solve the problems that in a traditional hydraulic fracturing technology, drilling and fracturing construction are conducted step by step, the working procedures of repeated drilling up and down and drilling tool replacement are complex, and stability is affected by repeated disturbance of drilling before fracturing. By means of the water injection fracturing device while drilling and a matched technological method, water injection fracturing of layer penetrating or bedding drilling can be conducted in time in the position next to drilling construction, the working procedures of additional drilling up and down, drilling tool replacement and the like are not needed, equipment is simple, operation is convenient, risks are controllable, and the field application effect is remarkable.

The invention relates to a high-concentration preservative bactericide. The problem that the conventional bactericide cannot be widely applied to water drive and polymer flooding sewage is mainly solved. The high-concentration preservative bactericide comprises the following components in percentage by weight: 30-70 percent of bactericide main agent 1,3-dioxane hexatomic ring and 30-70 percent of dibromo-3-nitrilopionamide. The high-concentration preservative bactericide is suitable for water drive and polymer flooding sewage, and when the dosing concentration is 5mg/l, the residual water quality bacteria in a water delivery and injection well can be ensured to reach the standard.