70 results about "Micro aggregates" patented technology

The invention concerns mixed micelles or micro-aggregates for inducing an immune response containing at least a first lipopeptide comprising a CTL epitope and at least a first lipid motif; and a second lipopeptide comprising at least an auxiliary T epitope and at least a lipid motif, whereof the type can be different from the first lipopeptide motif. Said micelles can be used as medicines and vaccines.

The invention discloses a functional gradient cement-based composite material enhanced by a nano material and a preparation method thereof. The composite material is composed of two or more of high-strength mortar, high-strength crude aggregate concrete, the fiber-enhanced super-high performance concrete, and the fiber-enhanced crude aggregate concrete according to isopyknic ratio. The nano material is doped into the composite material, an aperture and a gap of a gelling system can be filled with the material taken as a micro aggregate, the hydration rate at an early stage of cement paste is increased; at the same time, the gradient design is employed, by aiming at out-phase in the composite material and an interface in a functional zone, the performance of the cement-based composite material is effectively improved, and the functional gradient cement-based composite material is prepared, and the performances of intensity, toughness, impact resistance, penetration resistance, and blast resistance are greatly increased.

The invention discloses an aminosilane-modified ecological nano cementing material and a preparation method thereof. According to the aminosilane-modified ecological nano cementing material, the ratio of water to ash is 0.15-0.35; except the water, the cementing material is prepared from the following raw materials in percentage by mass: 35%-55% of cement, 3%-11% of an ecological nano material, 10%-20% of limestone powder, 30%-40% of flyash, 0.013%-0.024% of an aminosilane modification agent and 0.2%-2% of a water reducer. The ecological nano material silicon powder is pre-dispersed, so that the dispersibility of the ecological nano material in a cement-based material is greatly improved; the micro-aggregate effect, the filling effect and the volcanic ash effect of the ecological nano material are more fully exerted; the properties such as microstructure, the physical and mechanical properties and the durability and the like of the cementing material are more effectively improved.

The invention discloses a super strength silicate cement adhesive and a preparation method thereof. The adhesive is mainly prepared from the following raw materials in percentage by weight: 30 to 40 percent of cement, 25 to 43 percent of quartz sand, 9 to 24 percent of micro aggregates, 0.9 to 2 percent of water reducing agent and 11 to 14 percent of water. The preparation method comprises the following steps of firstly, uniformly mixing the cement, the micro aggregates, the water reducing agent and the quartz sand, then continuously stirring for 4 minutes and immediately forming after taking out the mixture; after the obtained product is formed, placing the obtained product into a curing box at the temperature of 35 DEG C to carry out steaming-curing under the humidity of not lower than 95 percent, demoulding after 4 to 12 hours, and placing a demoulding specimen into hot water at the temperature of 45 to 80 DEG C to carry out curing for 48 to 96 hours; and finally, testing the qualification of the product to obtain the cement adhesive. The cement adhesive disclosed by the invention has the excellent performances of excellent compaction, high strength, excellent durability and the like, is suitable for electrotechnical porcelain products such as a high-tonnage suspension type porcelain insulator and the like and has low cost.

The invention provides a solanum tuberosum and double cropping rice rotation crop rotation culture method for improving a south double cropping rice paddy soil micro-aggregate structure, and belongs to the field of agricultural production. The method mainly comprises the first step of solanum tuberosum high-yield cultivation and the second step of early rice and late rice high-yield cultivation, wherein the first step comprises the substeps of preparation before seeding, variety selection, cutting of seed solanum tuberosum, seeding at suitable time and coverage of straw and a mulching film, field management comprising timely film breaking, topdressing, drainage and insect disease prevention, timely harvesting, and field returning of solanum tuberosum stem leaves and straw for coverage, and the second step comprises the substeps of variety selection, seedling transplanting, filed management comprising scientific fertilization, weeding, irrigation and insect disease prevention, timely harvesting and field returning of straw. By means of the method, south double cropping rice paddy winter agriculture can be reasonably developed, the rice paddy soil micro-aggregate structure is effectively improved, soil is fertilized, economic benefits of solanum tuberosum in one season are increased on the basis of ensuring the double cropping rice yield, the purposes of improving the rice paddy soil structure and obtaining high-yield year-round crops are achieved, and the popularization value is high.

The invention discloses a water-soluble soil salinization improver and a preparation method and an application of the improver. The water-soluble soil salinization improver is prepared from guar gum, nonionic polyacrylamide, potassium polyacrylate, potassium polysilicate, citric acid and monoammonium phosphate according to a mass ratio of (5-8) to (10-16) to (10-16) to (8-18) to (30-50) to (10-20). The preparation method of the water-soluble soil salinization improver comprises the following steps: mixing guar gum, nonionic polyacrylamide, potassium polyacrylate, potassium polysilicate, citric acid and monoammonium phosphate according to a ratio, and prilling to prepare the water-soluble soil salinization improver. The application of the water-soluble soil salinization improver is characterized by spraying or irrigating the soil salinization improver to the salinization soil. The water-soluble soil salinization improver has the advantages that micro-aggregates are formed by the soil after the improver is applied to the salinization soil, the volume weight of the soil can be reduced, the total porosity of the soil is increased, the air permeability and water permeability are improved, the rate of gathering the salt of the deep soil to the earth surface is reduced, the rate of washing the salt is increased, the base exchange capacity is increased, the pH value is regulated, and the utilization value of the soil is increased.

The invention discloses a method for high-impermeability concrete material by wet grinding process, comprising: ball milling 10-30 parts of pulverized coal ash, 10-30 parts of mineral slag, 0.5-0.8 part of a grinding aid and 20-40 parts of water to obtain first slurry; ball milling 5-10 parts of quartz sand and 5 parts of water to obtain second slurry; stirring well 100 parts of cement, 80-100 parts of river sand, 160-200 parts of gravel, 3-8 parts of rubber powder, 0.5-1.0 part of a water reducer, 0.8-1.9 parts of a defoaming agent, 25-35 parts of water, the first slurry and the second slurry.Mineral admixture and quartz sand are treated by wet grinding, grinding particle size is determined based on the theory of close packing, volcanic ash effect and micro-aggregate effect of raw materials are given to full play and in connection with interlocking packing action of modified rubber powder in cement concrete, thus preparing the high-impermeability concrete, and the high-impermeability concrete material is high in compactness, low in energy consumption, low in production cost and widely applicable to building basements, roofs, exterior walls and the like.

A mineral admixture for high durable concrete. Two materials of siliceous dust and calcium hydrate are mixed according to a proportion, wherein the siliceous dust accounts for 20-50 weight parts and the balance is calcium hydrate. The fineness of the siliceous dust: its specific surface area is 18000m<2>/Kg. The content of silica is greater than 85%. The fineness of calcium hydrate is 0.045. The screen over-size is not greater than 4g. The purity is 90%. The fine siliceous dust and calcium hydrate are mixed according to a certain proportion to form the novel mineral admixture based on secondary hydration effect and micro-aggregate effect. The addition of the mineral admixture in cement contributes to cement strength and performance mainly in three aspects as follows: pozzolanic effect, particle filling effect and interface effect can greatly raise density of high-performance concrete and enhance durability and strength of high-performance concrete.

The invention relates to an energy storage thermal insulation building material which has the main characteristics that a pasty inorganic phase change energy storage material PCM is coated into a hollow high heat conductivity carbon-based functional material to form an energy storage coating body; oil shale residue powder, water glass, sodium hydroxide solution and cement are stirred and uniformly mixed into a slurry material according to the mass ratio; the energy storage coating body is added into the slurry material and the mixture is cast into a shape of a common brick body or other shapes; and the volume ratio of the slurry material to the energy storage coating body is 1:1 to 1:4. The energy storage thermal insulation building material has the advantages that the PCM has large energy storage capability and a low phase transformation point, so that the solid-liquid separation is avoided and the undercooling problem is solved; the carbon-based functional material is used as a coating material, so that the leakage of a liquid phase is prevented and the corrosion problem of the inorganic phase change material is solved; and the application of the oil shale residue powder which is used as a main body building material utilizes the activity effect, the morphological effect and the micro aggregate effect of the oil shale residue powder and aims to increase the absorption rate of the building material for the light as further as possible on the basis of not influencing the compression strength of the building material, achieve the effects of high efficiency, energy saving, heat preservation and energy consumption reducing and ensure the energy storage thermal insulation building material to have high practicality.

The invention discloses a method of producing an environmental friendly active cement-based composite material by utilization of iron-nickel alloy tailings. The method is characterized in that: the composite material is prepared by mixing 3-5% of iron-nickel alloy powder, 3-5% of clinker powder, 3-5% of dry coal ash and 3-5% of an activator. The beneficial effects of the method are that: addition of the iron-nickel alloy tailings into the cement clinker after the iron-nickel alloy tailings are modified by processing and activation is simple and easy to operate; the method plays a positive role for recycling of industrial solid waste, improvement of the comprehensive utilization rate of resources, and saving and reasonable effective utilization of the resources; and the obtained cement-based composite material is capable of 1) enhancing mechanical properties of concrete, 2) reducing the engineering cost of cement and concrete, 3) significantly reducing heat of hydration of concrete, improving concrete workability, reducing segregation and water bleeding, reducing temperature changes and internal pressure of large-volume concrete, and inhibiting cracks generated by temperature differences, 4) inhibiting concrete alkali-aggregate reactions, and 5) having a micro-aggregate effect.

The invention discloses a loose accumulation body stratum concrete protection wall rotary excavating quick hole forming method. The method mainly comprises the following construction steps of conducting measurement lofting, burying a steel retaining cylinder at a hole opening, conducting construction through a rotary drill rig to drill into a loose soil layer by the pile hole depth of about 2 m and lifting up the rotary drill rig; filling micro-aggregate concrete into a pile hole and descending a drill of the rotary drill rig to repeatedly impact and squeeze concrete downwards to press the micro-aggregate concrete or grout into a surrounding loose accumulation body under the action of a certain impact pressure; conducting initial setting for 1-2 days, conducting construction through the rotary drill rig again after the micro-aggregate concrete or the grout reaches a certain strength, conducting rotary drilling on the solidified concrete in the drilled hole previously, and squeezing thesolidified concrete into the surrounding loose accumulation body and adhering the solidified concrete to the hole wall to form a circle of concrete solidified body protective wall. Through the looseaccumulation body stratum concrete protection wall rotary excavating quick hole forming method, the rotary drilling rig can conduct effective drilling in a loose rock-soil accumulation body stratum, the construction progress is accelerated, the phenomena of hole collapse, drill jamming and the like are avoided, and the hole forming quality is improved.

The invention relates to a modified ecological cementing nano-material and a preparation method therefor. According to the modified ecological cementing nano-material, the water cement ratio is 0.15 to 0.35; and the modified ecological cementing nano-material contains other ingredients in percentage by mass: 35% to 55% of cement, 3% to 11% of modified silica fume, 10% to 20% of limestone flour, 30% to 40% of high-quality I-class low-calcium fly ash and 0.2% to 2% of efficient water reducing agent. Through carrying out predispersing treatment on the silica fume of the ecological nano-material, the dispersity of the ecological nano-material in a cement-based material is greatly improved, so that the micro-aggregate effect, filler effect and volcanic ash effect of the ecological nano-material are more sufficiently exerted. By adding the high-quality limestone flour, the grain size distribution is further optimized, the cohesiveness of cementing material blended slurry is effectively improved, the compactness of a hardened cementing material is improved, and the microstructure of the cementing material is improved. Meanwhile, by adding the fly ash, the fluidity and later strength of cement slurry are improved, and the microstructure of the cementing material is improved.

The invention provides a self-repairing grouting material and a preparation method thereof. The self-repairing grouting material is prepared by mixing grouting material powder with water, wherein thegrouting material powder is prepared from, by mass, 40%-50% of a cementing material, 5%-15% of micro aggregate, 40%-50% of fine aggregate, 0.01%-1% of an admixture and 1%-5% of a self-repairing agent.The preparation method comprises the steps that step 1, sulphoaluminate clinker is prepared; step 2, the raw materials are uniformly mixed separately as required; step 3, a chemical repair agent anda catalyst which cooperate with each other are selected; step 4, the raw material components are mixed uniformly according to the mass percentage to prepare the grouting material powder; step 5, the grouting material powder is mixed with the water to prepare the self-repairing grouting material. The self-repairing grouting material can repair cracks, the preparation steps ares simple, the operation is convenient, and the prepared self-repairing grouting material has high strength, high fluidity and durability.

Methods for measuring platelet aggregation in a blood sample, for measuring the efficacy of anti-platelet therapies at the point of care, and for detecting the presence of platelet micro-aggregates in a blood sample. Several differences between the methods of the present invention and previously disclosed procedures for practicing such methods while using a hematology analyzer will allow for achieving about 0.98 correlation relative to light transmission aggregometry. These differences allow the methods of the present invention to be used at the point of care for assessing, e.g., the efficacy of anti-platelet therapy, particularly GPIIb-IIIa antagonists.

The invention discloses a method for preparing a cement-based grouting material from phosphorus solid wastes through a wet grinding technology. The method comprises the following steps: carrying out grading crushing on 50-150 parts of phosphorus tailings, and sieving the crushed phosphorus tailings to obtain phosphorus tailing powder; crushing 50-90 parts of phosphorus residues through a crusher to form phosphorus residue powder; adding 6-12 parts of phosphogypsum, 0.5-0.8 parts of a grinding aid, 5-10 parts of an alkali activator and 50-65 parts of water to the phosphorus residue powder, placing the obtained mixture in a ball mill, carrying out ball milling, and ageing the ball-milled mixture for 2-5h to obtain a slurry; and taking 100 parts of cement, 0.8-1.5 parts of a water reducer, 5-8 parts of an expanding agent and 1.0-1.8 parts of an antifoaming agent, adding the phosphorus tailing powder and the slurry, and uniformly stirring all above materials in a stirrer to obtain the cement-based grouting material. The phosphorus solid wastes are adopted as a main raw material, wet grinding is adopted to substitute dry grinding, and the phosphorus tailings are adopted as aggregates, so the close packing and micro-aggregate effects are realized through particle size control, the potential activity of raw materials is fully displayed, and the cement-based grouting material has the advantages of good compactness, low energy consumption and low production cost, and can be applied to industries and building engineering.

The invention discloses gelling foamed concrete which contains cement, a fine aggregate, a coarse aggregate and an active micro aggregate. The foamed concrete is characterized by containing resin andan auxiliary agent. The resin contains modified unsaturated polyester resin which is rubber modified unsaturated polyester resin. The rubber modified unsaturated polyester resin is rubber modified epoxy vinyl ester resin. The invention also provides a preparation method of the gelling foamed concrete. The preparation method comprises the following steps: (1) carrying out a polymerization reactionon a preparation raw material of rubber and epoxy vinyl ester resin under the action of an initiator to prepare the rubber modified unsaturated polyester resin; (2) preparing an accelerator; (3) preparing foam and gel slurry; and (4) stirring and mixing the foam, gel slurry and an auxiliary agent to prepare the gelling foamed concrete.

The invention belongs to the technical field of building materials, and particularly relates to an autoclaved aerated concrete block and a preparation method thereof. Waste wind power blade fibers used in the invention can inhibit and reduce the dry shrinkage of the autoclaved aerated concrete block, and avoid the problems of masonry cracking and the like caused by water absorption and large dry shrinkage of the block in the actual use process; and the characteristics of small particle size and high specific surface area of the waste wind power blade powder are fully utilized, the waste wind power blade powder is used for replacing fly ash, slag and other raw materials in conventional building block production raw materials, the micro aggregate filling effect of the waste wind power blade powder is exerted, and the mechanical property of the building block is enhanced.

The invention discloses a thick-thin micro aggregate 6S processing process for concrete and a production line. The thick-thin micro aggregate 6S processing process comprises the following steps: pretreating materials; performing circulatory multi-stage rough crushing and multi-stage desliming; performing circulatory multi-stage fine crushing and multi-stage powder concentrating, and preparing finesand and aggregates of different specifications and different limestone powder contents in proportion; and performing crushing and processing, and multistage winnowing, sorting and collecting on recycled dust materials. The whole sand-making production line is perfected, so that the system yield can be effectively increased, and finished product gravel aggregate quality can be effectively improved, and therefore, various grading and optimal grading of finished product gravel aggregates are realized; moreover, recycled powder waste is effectively recycled, treatment ability is strong, mountainflour grading can be precisely controlled, and mountain flour of various specifications is prepared; and the thick-thin micro aggregate 6S processing process is used for effectively improving durability and mechanical property of concrete, is low in production cost, and is efficient and energy-saving.

The invention discloses a device for improving the efficiency of thrombolysis in veins by controlling a magnetic nanometer material, and belongs to the technical field of magnetic nanometer materials.By mixing magnetic nanometer particles with a urokinase solution, the magnetic nanometer particles is made to form micro-aggregate lines under the action of a magnetostatic field, and then under thecontrol of a spatial rotation field, the micro-aggregate lines do rotation movement, and the rotation movement causes the surrounding flow field to form eddy current, so that urokinase is helped to bediffused into the surfaces of thrombi, and dissolution of the thrombi is accelerated. The device has the advantages that the structure is simple, and the operation is convenient, and the efficiency of thrombolysis in the veins is helped to be quickly improved.

The invention relates to a method for improving a tobacco rhizosphere environment, and belongs to the technical field of soil improvement. The method is characterized by including the steps of ash soil dust manufacture and distributing application. By popularizing the technology for improving the tobacco rhizosphere environment by the aid of tobacco field ash soil dust, soil nutrient content can be improved, growth and development of microorganisms in soil are promoted, physical characteristics of the soil are improved, the soil is loosened, formation of soil micro-aggregates is promoted, accordingly, a soil structure is improved, and permeability and soil moisture storage capacity of the soil are enhanced. Besides, land hardened due to long-term chemical fertilizer application is effectively improved, and soil property is greatly improved.

The invention relates to a system for resource utilization and disposal of building wastes. The system can also be used for the resource utilization and disposal of solid wastes such as mineral waste residues, tailings and the like. The system comprises a material bin, a belt conveyor, a sand making machine, a lifting machine, a sand bin assembly, a material spreading machine, a vibration sieve I, a vibration sieve II, a dust removal pipeline, a primary air separator, a powder bin assembly, a dust remover, an additive bin assembly, a sealed main building, a container bag lifting machine, a powder feeding pipeline, a finished product lifting machine, a finished product bin assembly, a finished product bulk machine, an additive scale, a micro-material additive feeding hopper, a powder scale, a mixing machine, a building bulk machine, a packing machine, a packing hopper and a sand scale, wherein dust suction hoods are arranged at the upper parts of the vibration sieves; a gradation-adjustable device is arranged between the vibration sieve II, the material bin and the sand making machine; a micro-aggregate collecting and recycling device is also arranged at the upper part of a cylinder bin. Through the system for the resource utilization and disposal of the building wastes, the problems of low utilization rate and low addition value of the wastes such as the building wastes and the like can be solved; the problems of low performance quality, high water content, poor grain shape and water pollution of the regenerated machine-made sand material caused by a wet process or a simple extensive type dry process can be solved.

Provided herein are constructs of micro-aggregate multicellular, minimally polarized grafts containing Leucine-rich repeat-containing G-protein coupled Receptor (LGR) expressing cells for wound therapy applications, tissue engineering, cell therapy applications, regenerative medicine applications, medical/therapeutic applications, tissue healing applications, immune therapy applications, and tissue transplant therapy applications which preferably are associated with a delivery vector/substrate/support/scaffold for direct application.