993results about How to "Reduce infiltration" patented technology

The invention discloses a pitaya high-quality and high-yield cultivation method adopting a water and fertilizer integrated fertigation technology. The method comprises the steps of screening of cultivated varieties, seedling cultivation, soil preparation, planting line and belt fabrication, bent frame building with stand columns, trickle irrigation system laying, plastic film mulching, seedling planting, irrigation, fertilization, trimming, clipping, flower thinning, fruit sorting, pest control, plastic film mulching for protection against frost and the like. According to the method, the pitaya variety of a self-pollination type is adopted as the cultivated variety, the fence planting mode and the fertigation technology are adopted, the investment in labor cost such as in pollination, weed control and fertilization is greatly saved, the lighting effect for pitaya is improved, the fertile fruit percentage is effectively raised, the fruit quality is effectively improved, the fertilizer using efficiency is raised to the maximum extent, the input-output cycle is short, the output is high, and the pitaya cultivation technology is worthy of being promoted widely.

The invention discloses an air brick used for a magnesium and carbon ladle, and a producing method thereof, aiming at producing high-quality air bricks used for the ladles. The mass percentage of the chemical compositions of the air brick is: 55 to 99 percent of MgO, 0 to 20 percent of C, 0 to 20 percent of AI2O3, 0 to 5 percent of ZrO2, 0 to 5 percent of AI, 0 to 5 percent of AI-Mg alloy, 0 to 5 percent of CaB6, and 0 to 2 percent of B4; the physical property indexes are: volume density (g/cm<3>): 3.00 to 3.15, apparent porosity (%): 1.5 to 5.0, cold compressive strength (MPa): 40 to 65, and distortion resistance at high temperature (MPa): 14.0 to 25.0. Raw materials adopted by the invention comprise fused magnesite, magnesite clinker, crystalline flake graphite, corundum, zirconia and oxidation inhibitor. The raw materials are added into a pug mill and externally added with a bonding agent for mulling. Mulled pug is added into a mould, and molded by utilizing isopressing equipment or a friction brick press or a hydraulic press. The invention obviously reduces the apparent porosity of the air brick, not only can improve the basic slag corrosion resistant capability of the air brick, but also can reduce the cost of the raw materials by more than two thirds.

The invention relates to a preparation method of freeze-drying ginkgo fruit, which mainly comprises the following steps of: scalding gingkoes with testa removed; removing endotesta; subjecting the gingkoes to treatments of debitterizing, curing, secondary cooking in sugar, and sugaring; freezing and drying the gingkoes in vacuum to reach the water content of less than 3% and the sugar content of 9-15% in the product; and finally adopting deoxidized packaging to obtain a freeze-drying ginkgo fruit product. As the raw materials are subjected to the debitterizing, curing and color protection treatments in the invention, the bad bitter taste of internal buds in the gingkoes is overcome, the appearance, shape and color of gingko nutlet are kept unchanged, and the crispness and hardness of the product are increased. As the secondary cooking in sugar and the sugaring are performed, nutrient components of the product are increased, and the palatability of the product is improved; the water content is lower than 3% at the same time as the biological active components in the gingko nutlet are preserved to the maximum extent due to the freezing and drying of the gingkoes in vacuum; therefore, the preparation method is suitable for preserving the product; moreover, the freeze-drying ginkgo fruit is suitable for people to carry and have in leisure and a trip.

The invention relates to an immune gene prognosis model for predicting hepatocellular carcinoma tumor immune infiltration and postoperative survival time, and belongs to the technical field of biological medicines. The model can be used for evaluating the infiltration degree of immune cells in a tumor in clinical practice by detecting the expression levels of 22 specific immune related genes of ahepatocellular carcinoma patient, so that the model can be used for predicting hepatocellular carcinoma tumor immune infiltration in clinical practice and improve the prediction capability of the liver cancer immunotherapy response. The model can be used for judging the postoperative overall survival risk of a patient and guiding the formulation of a postoperative treatment strategy, and the corresponding microarray chip kit can realize the standardization and convenience of detection. Meanwhile, the immune gene prognosis model provided by the invention can increase the prediction accuracy andthe clinical net income of a hepatocellular carcinoma TNM staging system on the total survival time of three years and five years after operation. As a molecular marker for objectively and accuratelyevaluating the tumor immune state and poor prognosis risk of hepatocellular carcinoma, the model can realize accurate implementation of hepatocellular carcinoma immunotherapy and accurate prognosis prediction.

A flexible display device includes a flexible substrate, a coating layer on one surface of the flexible substrate, a driver circuit on the other surface of the flexible substrate, and a display element on the driver circuit, the coating layer including polymer resin and nano particles dispersed in the polymer resin.

The invention provides a preparation method of a highly-hydrophobic fluorocarbon coating for a photovoltaic component back plate. The preparation method is suitable for outdoor coatings and in particular suitable for coated type photovoltaic back plates. The fluorocarbon coating consists of a component A and a component B in a mass ratio of (1-5):1, wherein the component A comprises fluorocarbon resin, hydrophobic modified nano-particles, a tin type catalyst and an anhydrous diluent A; and the component B comprises an isocyanate curing agent and an anhydrous diluent B. The nano-particles can be uniformly dispersed in main body resin after being subjected to coupling agent hydrophobic modification, is good in compatibility, and can form a micro-nano rough grain structure after being coated on a substrate; and by combining low surface energy of the fluorocarbon resin, the surface of the fluorocarbon coating has high hydrophobicity of a 'lotus leaf effect', has a good antifouling effect, and can greatly reduce influence of water drops on components. Meanwhile, the prepared fluorocarbon coating is excellent in weathering resistance, chemical resistance and salt spray resistance, so that the fluorocarbon coating is suitable for coated type photovoltaic component back plates and is good in performance.

The invention discloses a production method and application of sandy land conditioner made from bentonite. The production method and application include the steps of firstly, purifying and modifying bentonite, and adding special additive to produce sandy land conditioner; secondly, manually or mechanically evenly scattering the sandy land conditioner to sandy soil surface of leveled sandy land, dry farmland or arid farmland; thirdly, using a rotary tiller to perform rotary tillage so as to evenly mix the sandy land conditioner and the sand soil inside topsoil; and fourthly, fully irrigating with water to enable the sandy land conditioner to absorb water and turn adhesive so that the sandy land conditioner is well combined with the sand soil to form soil aggregates, thereby achieving water saving, water holding, fertilizer holding, wind proofing and sand stabilization and increasing yield of planted crops. The sandy soil conditioner is mainly used for modifying sand soil, dry farmlands and arid farmlands, and can also be used for modification of saline-alkali soil, impoverished soil, yellow mud soil and easily caking soil, desertification control and various sand stabilizing projects. The sandy land conditioner is more effective in application to rice planting.

The invention discloses a marine-corrosion/hot-corrosion-resistant composite coating and a preparation method thereof, belonging to the technical field of metal surface protection. A novel FeCrAlRe hot-corrosion-resistant powder core wire material is prepared by coating mixed powder, containing Cr powder, Al powder and the like, on a carbon steel band. A ZnAlMgRe powder core wire material is prepared by coating mixed powder, containing Al, Mg, Zn and Re, on a Zn-base alloy band. The preparation method of the composite coating comprises the following steps: spraying the FeCrAlRe powder core wire material by using a high-speed arc spraying device to form an alloy coating on a pretreated steel base surface, and spraying a ZnAlMgRe coating to form a double-layer composite structure protective coating. The prepared coating can resist hot corrosion, and has excellent corrosion resistance in a marine high-humidity high-salt-mist environment.

The invention discloses a method for building a cold region riparian buffer strip stopping and controlling agricultural non-point source pollution, and relates to an ecological and environmental protection method. According to the method, three different natural vegetation barrier strips are built from a farmland to a river channel, leguminous plant locust and natural grass land vegetation are combined in a gentle slope area, infiltration of farmland runoff can be effectively stopped and controlled, nutrient elements such as nitrogen and phosphorus can be fixedly adsorbed by the aid of plant rhizosphere, the farmland runoff enters an ecological barrier area provided with an arbor-shrub-grass vegetation belt and a biological carbon adsorption belt, rainfall runoff can be remarkably intercepted, absorbed and transformed, and the biological carbon adsorption belt effectively adsorbs pollutants in snowmelt runoff during spring thawing of winter snow and can be absorbed, transformed or degraded by plants and rhizospheric microorganisms after winter dormant period. Agricultural non-point source pollution can be further stopped and controlled, and flood prevention and discharge functions of the riparian buffer strip cannot be affected.

The invention relates to a water-soluble polymer synergist used for fertilizers, its preparation method and application. The fertilizer synergist consists of 10%-20% (weight percent) of guar gum, 20%-30% (weight percent) of non-ionic polyacrylamide, 20%-30% (weight percent) of potassium polyacrylate, and 20%-30% (weight percent) of polysilicate potassium. The water-soluble polymer synergist of the invention can obviously increase the transmission speed and transmission distance of phosphorus in soil, reduce the fixation probability of phosphorus, enhance the water-retention property and fertilizer preserving property of soil, substantially increase crop yield, as well as effectively improve fertilizer utilization rate and reduce fertilizer usage.

The invention discloses a construction method of a geogrid reinforced clay edge-covered tailing subgrade and belongs to the technical field of subgrades in the civil engineering. The construction method comprises the following steps: foundation treatment, sand gravel underlayer construction, laying of a two-way geogrid and water-permeable geotechnical cloth, feeding laying operations of clay edge-covering layers on the two sides of the subgrade and a tailing subgrade main body layer by layer, rolling construction, one-way geogrid construction between the tailing subgrade main body and the edge-covering clay to a designed elevation, and finally, the construction of an ash doped clay sealing layer. As the one-way geogrids are laid between the clay edge-covering layers on the two sides of the subgrade and the tailing subgrade main body, the defects such as differential settlement, poor subgrade stability and the like between the two fillers, namely the clay and the tailings, are reduced. The construction method has the advantages of simple structure, low cost and convenience for construction; besides, the consumption of the tailings and the overall stability of the subgrade can be increased, the differential settlement and the usage of the earthwork of the subgrade are reduced, rainfall infiltration and capillary water rise are decreased, and the internal drainage performance of the section of the subgrade is improved.

The vacuum insulator includes an internal structure; a filler for filling empty spaces of the internal structure; and an envelope having an upper envelope composed of a metal layer and a polymer layer formed on the metal layer to surround an upper surface of the internal structure, and a lower envelope composed of a metal layer and a polymer layer formed on the metal layer to surround a lower surface of the internal structure, the metal layer of the upper envelope and the metal layer of the lower envelope being opposite to each other, wherein in a certain area along outlines of the upper envelope and the lower envelope, the metal layer of the upper envelope and the metal layer of the lower envelope between which a film composed of a Low density polyethylene LDPE and a Linear-Lowdensity polyethylene LLDPE is inserted, are adhered by heat, and in an area excluding the certain area, the metal layer of the upper envelope and the metal layer of the lower envelope are adhered by polyurethane.

The invention relates to magnesium alloy surface treatment technology, in particular to highly corrosion-resistant ceramic coating solution prepared through magnesium alloy surface micro-arc oxidation and application thereof. The defects that a magnesium alloy workpiece has a relatively rough surface after being subjected to micro-arc oxidation treatment in fluorozirconate and is severely corroded in oxidizing solution are overcome. 1L of micro-arc oxidizing solution consists of 6 to 12g of fluorozirconate, 2 to 10g of dihydric phosphate, 2 to 8g of fluoride and 2 to 10g of citrate. A method for preparing a composite ceramic coating by using the solution comprises the following step of: treating a magnesium alloy workpiece subjected to pretreatment and the conventional micro-arc oxidation treatment respectively in the micro-arc oxidizing treatment solution to obtain the composite ceramic coating. Compared with the conventional magnesium alloy micro-arc oxidation coating, the composite ceramic coating has higher corrosion resistance, uniform thickness and low surface roughness, is compact and does not need aftertreatment such as sealing and the like; and the solution has simple components and is suitable for industrial production, and the raw materials are readily available.

The invention relates to a wetting-resisting super-hydrophobic membrane and a preparation method thereof. Combined nanoparticles are coated with a low surface energy solution to form a rough structure, and a PDMS-SiO2-PDMS sandwich compound layer is formed on the surface of the membrane. The compound layer has the advantages of rough structure and low surface energy, the membrane has super hydrophobicity, and the membrane further has high wetting resistance in a membrane distilling process. The membrane can be utilized to perform direct contact type membrane distillation to treat a water bodycontaining a surface active agent, so that membrane distillation operation time is obviously prolonged, stable operation time is 20 times or more of that of a PVDF original membrane, and water production capacity can be improved by 15 times or more.

The invention discloses a preparation method for a direct methanol fuel cell film electrode, which belongs to field of direct methanol fuel cell. The film electrode employs a proton exchange film as an electrolyte film, a platinum-ruthenium-carbon catalyst as an anode and a platinum-carbon catalyst as a cathode, and is composed of a supporting layer, a micro-pore layer, a catalytic layer, a proton exchange film which are arranged at the anode side and a supporting layer, a micro-pore layer, a catalytic layer which are arranged at the cathode side. The preparation method for the film electrode includes: preparation and pretreatment of the film, preparation of a catalyst paste, preparation of the catalytic layer, preparation of a micro-pore layer paste, preparation of the micro-pore layer and hot pressing process. Advantages of the preparation method are that: the micro-pore layer and the supporting layer prepared by the method have higher porosity, reduce mass transfer resistance of the film electrode, improve interface between the micro-pore layer or the catalytic layer and the supporting layer, thereby increasing three-phase contact area of catalyst and reactant and increasing output power density of the cell.

The invention discloses a carburization prevention coating for an ultralow carbon stainless steel casting. The carburization prevention coating is prepared by mixing 50 to 60 weight percent of white corundum powder, 5 to 10 percent of oxidant, 3 to 8 percent of sintering aid, 1 to 3 percent of organic binder, 2 to 5 percent of bentonite suspending agent, 0.2 to 0.4 percent of aid, and 28.8 to 38.2 percent of solvent; the granularity of the white corundum powder is less than or equal to 3 mu m, the granularity of the oxidant is less than or equal to 5 mu m, and the granularity of talcpowder isless than or equal to 5 mu m; the oxidant is one or more of potassium nitrate, potassium permanganate, potassium dichromate, and potassium chlorate; the sintering aid is one or more of talcpowder, feldspar powder, mica powder, and clay; and the organic binder is rosin or resin; and the solvent is ethanol or isopropanol, the concentration of ethanol is more than or equal to 95 percent, and the concentration of the isopropanol is more than or equal to 98 percent. The coating is poured into some ultralow carbon stainless steel castings of water turbine blades, and the thickness of a surface carburization layer of the ultralow carbon stainless steel casting on which the carburization prevention coating prepared according to the formula is poured is less than or equal to 3mm, and is obviously superior to that of the common coating.

The invention provides a treatment copper foil, which is low in roughness and high in peeling strength with an insulating resin substrate. After an absorption treatment, an active processing liquid after being impregnated is low in deterioration rate of the peeling strength, less in penetration amount and excellent in etching property. The copper foil is characterized in that the surface of the copper foil is sequentially equipped with a roughening treatment layer, a chromate layer and a silane coupling agent layer. The ten-point average roughness Rz of the copper foil surface is 1.0 mu m to 2.7 mu m. When the surface of the copper coil with the area thereof 177 mu M2 is measured by purple laser of visible light with the wavelength thereof 408 nm, the average interval S of local peaks is below 0.0230 mm and S does not include 0.

The invention discloses reflection and heat insulation paint for buildings. The reflection and heat insulation paint comprises the following ingredients in parts by weight: 9.5 to 23 parts of water, 0.44 to 1.08 parts of thickening agents, 0.45 to 0.55 parts of dispersing agents, 0.1 to 0.2 parts of wetting agents, 0.4 to 0.8 parts of defoaming agents, 0.05 to 0.25 parts of multifunctional auxiliaries, 0.05 to 0.15 parts of preservatives, 0.05 to 0.25 parts of mould inhibitors, 15 to 25 parts of titanium dioxide, 0 to 22.5 parts of composite heat insulation powder, 2 to 6.5 parts of fillings, 1 to 2 parts of antifreezing agents, 1.25 to 2 parts of film forming auxiliaries, 0.01 to 0.2 parts of emulsifying agents, 25 to 40 parts of emulsion, 2.5 to 5 parts of hydrophobing agents, 0.05 to 0.15 parts of pH value regulating agents and 0.02 to 0.07 parts of tributyl phosphate, wherein the composite heat insulation powder is a powder mixture obtained by Rectorite powder, potassium hexatitanate whiskers and ferro-nickel spinel through mixed dispersion, and the hydrophobing agents are polysiloxane emulsion. The reflection and heat insulation paint has high reflection, blockage and radiation performance on solar spectrum, the heat insulation effect is good, in addition, the composite heat insulation power is easy to prepare, and the preparation cost is lower.