174 results about "Aggregate structure" patented technology

Ultradispersed ones of primary particles of nanometer-sized carbon are obtained by applying a wet-type milling method and/or a wet dispersion method to an aggregate structure of the primary particles to overcome van der Waals forces, by which forces the primary particles are held together to form the aggregate structure, whereby the ultradispersed primary particles are obtained in a colloidal dispersion on a large-scale basis at low cost without using any additive. In a method of manufacturing the ultradispersed primary particles, the wet-type milling method is carried out in a ball mill, preferably in combination with a high-energy ultrasonic-wave process carried out in a dispersing medium such as pure water, whereby a colloidal solution or slurry with a low-concentration of the primary particles ultradispersed in the dispersing medium is obtained.

A method and an apparatus for automatically making conglomerated structures (6). The method comprises a) modelling a building structure and a containing shell about the structure by a computer using a CAD software thus obtaining a file; b) extracting sections of modelled structure and of modelled containing shell, by means of horizontal planes spaced apart of a predetermined pitch, such that a plurality of section planes is generated, said planes being sorted from below towards above with respect to the model of the structure and of the model of the shell; c) depositing by a moving unit (3) on a ground a bottom-to-top plurality of layers of granular material (22) alternate to a binding material liquid sprayed on the layers at filled areas corresponding to filled portions of the of the structure and of the containing shell, according to a predetermined path; d) vertically raising the moving unit (3) according to a pitch between a deposited layer and the following layer; e) repeating the step of depositing granulating material and repeating the step of spraying the binding material on a granulated material at filled areas of the structure and of the shell as many times as the planar cross sections into which said structure and the containing shell have been divided, each of said times for a different and consecutive section plane until the last layer (17) is complete; f) demolishing the containing shell (5) and removing unbound granular material (7) accumulated in the shell (5), thus releasing a conglomerate structure (6) that reproduces accurately said modelled structure. The apparatus comprises a horizontal frame (1), a bridge (2) sliding on guide on the horizontal frame (1), a moving unit (3) sliding along the bridge (2) or integral to the bridge (29) and have a spraying head (20). The horizontal frame (1) is moved along uprights (4) by a step actuator. The apparatus comprises a plurality of “skirts” (10) that surround the containing shell (5) and are integral to the horizontal frame (1). Such skirts scrape the outer surface of the containing shell (5) collecting the granular material (21) deposited out of the shell (5). Such skirts (10) can comprise an brush-like edge (20) suitable for externally sweeping the containing shell (5).

An efficient program analysis method is provided for lazily decomposing aggregates (such as records and arrays) into simpler components based on the access patterns specific to a given program. This process allows us both to identify implicit aggregate structure not evident from declarative information in the program, and to simplify the representation of declared aggregates when references are made only to a subset of their components. The method can be exploited to yield: (i) a fast type analysis method applicable to program maintenance applications (such as date usage inference for the Year 2000 problem); and (ii) an efficient method for atomization of aggregates. More specifically, aggregate atomization decomposes all of the data that can be manipulated by the program into a set of disjoint atoms such that each data reference can be modeled as one or more references to atoms without loss of semantic information. Aggregate atomization can be used to adapt program analyses and representations designed for scalar data to aggregate data. In particular, atomization can be used to build more precise versions of program representations such as SSA form or PDGs. Such representations can in turn yield more accurate results for problems such as program slicing. Our techniques are especially useful in weakly-typed languages such as Cobol (where a variable need not be declared as an aggregate to store an aggregate value) and in languages where references to statically-defined sub-ranges of data such as arrays or strings are allowed.

The invention discloses a liquid film prepared from crop straw fermentation liquid and an application method thereof. The liquid film comprises the following components in parts by weight: 82-99 parts of raw materials, 11-14 parts of film forming agent, 2-3 parts of plasticizer, 1.3-2.5 parts of crosslinking agent, 0.02-0.05 part of initiator, 0.2-0.3 part of pH regulator and 0.1-0.3 part of additional component, wherein the raw materials include 68-79 parts of crop straw fermentation waste liquid or water, 7-10 parts of bentonite, 2-3 parts of modified starch and 5-7 parts of potassium humate; and the additional component is one or more of crofton weed extraction liquid, potassium nitrate, trace elements and composite microbial agent spore powder. The liquid film disclosed by the invention has the advantages of simple proportioning, simple structure, convenience in use, low cost, low labor intensity and degradability; and after degradation, the liquid film can improve the soil texture and aggregate structure so as to improve the fertilizer efficiency.

The invention discloses a sorting method based on non-supervision feature selection. By means of the method, high dimensional data are expressed in similar diagrams, distances between sample points are obtained through the ITML, and a similar matrix of the original high dimensional data is set up; then the SM algorithm is executed on the similar matrix and a diagonal matrix corresponding to the similar matrix to achieve mapping of original sample sets to feather vector space; then through learning of sparse coefficient vectors and MCFS scores, weight coefficients of all attributes in the original sample set are obtained, and the attribute which can best express the original sample information is selected out; finally a support vector machine is used for setting up a sorting model of the selected data to predict fatigue states of a driver. The method selects features of the high dimensional data under the condition of maintaining data aggregate structures before the sorting model is set up, and the negative effect of curse of dimensionality on data sorting is avoided.

A porous cellulose aggregate characterized by having a secondary aggregate structure resulting from aggregation of primary cellulose particles, having a pore volume within a particle of 0.265 to 2.625 cm³/g, containing I-type crystals and having an average particle size of over 30 to 250 μm, a specific surface area of 0.1 to less than 20 m²/g, a repose angle of 25° to less than 44° and a swelling degree of 5% or more, and characterized by having the property of disintegrating in water.

The invention provides a slow-release fertilizer special for saline alkali soil improvement, and the fertilizer comprises the following components by weight: 18%-20% of large granular urea, 35%-40% of slow-release coated urea, 12%-15% of an organic granulated fertilizer, 15%-18% of monoammonium phosphate and 12%-15% of potassium sulfate. The low-release fertilizer special for saline alkali soil improvement combines nutrient slow release and salt and alkali resistance, effectively reduces alkalescence of soil, effectively increases the aggregate structure of the soil, increases fertilizer retention properties of the soil, increases soil porosity, reduces soil bulk density, changes the saline alkali soil compaction structure, creates the good soil environment for crops, is comprehensive in nutrient and lasting in fertilizer efficiency, and reduces environmental pollution caused by fertilization, the nitrogen utilization rate can reach more than 45%, the input total amount of the fertilizer can be reduced, low carbon production can be maintained, and the slow-release fertilizer is conducive to the improvement of the worsening ecological environment. The slow-release fertilizer has the advantages of simple preparation method, is suitable for industrial production, and has great application value.

The invention discloses a pervious concrete specimen manufacturing method based on CT scanning and 3D reconstruction. By obtaining a pervious concrete block specimen, a scanning two-dimensional slice image is obtained by conducting CT scanning; gray processing is conducted on the image, an image model is formed by operating filtering noise-reducing, the model is cut and binarization segmentation for the model is implemented, the aggregate structure of the pervious concrete is determined; by using the watershed algorithm, aggregate structure data is extracted, the optimized pervious concrete aggregate model is formed, and the model is printed and therefore the pervious concrete specimen is obtained. According to the pervious concrete specimen manufacturing method based on the CT scanning and the 3D reconstruction, the specimen formed by combing the CT scanning, 3D modeling and 3D printing is repeatedly applied to the same pervious concrete experimental study, variations are easily controlled in an experiment for testing specimen water permeability and porosity, a better experimental result is achieved, and compared with the pervious concrete produced by a traditional pervious concrete pouring and vibrating method, the pervious concrete specimen manufacturing method has great differences and advantages.

The invention relates to the technical field of crop cultivation, in particular to a tea tree and soybean intercropping method including the following steps of (1) sowing time, (2) sowing method, (3) managing and (4) harvesting, wherein sowing is carried out after spring tea is picked. Soybeans have the function of nodule bacterium nitrogen fixation and can be used as green manure, and soil is turned in the full-bloom stage with the combination of tea garden intertillage; when leaves of plants turn yellow and the soybeans are ripe and full, soybeans are harvested, and branches and trunks are turned and buried. By means of the technical scheme, the method has the advantages of increasing soil fertility, improving the soil structure for intercropping of summer soybeans in newly cultivated tea gardens, and enabling the content of organic matter in soil to be remarkably increased. Physical and chemical properties of the soil are good, the soil is loose, the soil hardness can be lowered, water-stable aggregate structures are increased, and beneficial biological communities in the soil are increased.

The invention provides a dedicated set fertilizer for yellow soil planted tobacco. The dedicated set fertilizer is prepared from a base fertilizer, a hole applied fertilizer and an additional fertilizer, wherein the base fertilizer, the hole applied fertilizer and the additional fertilizer are applied to different growth periods of the tobacco; the base fertilizer is an organic-inorganic compoundfertilizer, the hole applied fertilizer is a nitrate-sulfur compound fertilizer, and the additional fertilizer is a nitrate-sulfur compound fertilizer. A fertilizing method of the dedicated set fertilizer for yellow soil planted tobacco disclosed by the invention comprises the steps: applying the base fertilizer once when a tobacco land is ridged, applying the hole applied fertilizer 15 to 20 daysafter tobacco seedlings are transplanted and applying the additional fertilizer 25 to 30 days after the tobacco seedlings are transplanted. The dedicated set fertilizer disclosed by the invention hasnutrient balance and strong specificity, can meet requirements of the different periods of the tobacco for the nutrients, can improve a soil physical aggregate structure and a soil microbial ecological environment and can improve quality and yield of flue-cured tobacco.

The invention discloses an overlapped floor which comprises a plurality of prefabricated reinforced concrete panels and T beam plates. At least one panel is spliced between every two adjacent T beam plates, and the prefabricated reinforced concrete panels and the T beam plates form the integral overlapped floor through post-poured reinforced concrete overlapped layers. According to the overlapped floor, due to the prestress technology and a bidirectional dense rib sandwiching structure form, the use amount of concrete is reduced, dead load is reduced, cost is reduced, and the rigidity and the bearing force of the overlapped floor are improved. Longitudinal rib belts and transverse rib belts are poured through lightweight aggregate structure heat insulation concrete so that the thermal bridge influences on the longitudinal rib belts and the transverse rib belts can be reduced, and meanwhile light filling blocks are matched for improving the heat insulation capability of the overlapped floor. When the overlapped floor is used, the T beam plates and the panels are arranged on a pre-pouring frame beam, and then the integral overlapped floor is formed after post-pouring of the reinforced concrete overlapped layers. The dead load is not increased, the bearing force is ensured, the shearing resisting capability of connecting points is ensured, and meanwhile heat preservation and heat insulation can be achieved; under the premise that the integrity and safety of the overlapped floor are ensured, the construction cost is reduced, and construction is simplified.

The invention discloses a production method for superfine tungsten carbide powder. The method comprises the following steps: performing wet grinding or dry grinding by using precursor powder containing carbon black and purple tungsten oxide; performing primary carbonization; adjusting the carbon amount of the product subject to the primary carbonization; and performing secondary carbonization to obtain the superfine tungsten carbide powder. Compared with other tungsten sources, the purple tungsten oxide has a loose needle-like aggregate structure and is suitable for preparing fine particles in the aspect of appearance. The purple tungsten oxide is subjected to ball milling for a long time, so the particle size is smaller; the purple tungsten oxide is directly reduced and carbonized under the property condition; the secondary carbonization is performed after the carbon amount is adjusted to the proper value after the primary carbonization, so the carbon content of the product is controlled well, the produced superfine tungsten carbide powder has narrow particle size distribution and high dispersibility and uniformity, the total carbon amount is closer to the carbon amount through stoichiometry, and the free carbon amount is low. The invention is simple in production process and has no special requirement on equipment. By the production method for dry grinding of the precursor powder, the production cost can be greatly reduced.

The invention discloses a method for improving the physical property and the mechanical property of a recycled aggregate by a carbon dioxide (CO2) maintaining method, which is suitable for recycled aggregate concrete and high-performance recycled aggregate concrete. The invention also provides a manufacturing method of the recycled aggregate structure concrete. The manufacturing method of the concrete comprises the steps: putting the recycled aggregate into a maintaining box capable of bearing a certain pressure, and introducing CO2 gas and maintaining for a certain time so as to reduce the water absorption rate of the recycled aggregate and increase the crush index of the recycled aggregate, wherein the used CO2 is tail gas discharged by thermal power or cement production; and uniformly stirring cement, the maintained recycled aggregate, sand or gravel or fine recycled aggregate and other mineral additive according to a certain mixing proportion, conveying or pumping the materials to a construction site and pouring to obtain the recycled aggregate structure concrete manufactured by the method and a concrete structure.

The present invention discloses an ecological multi-effect spraying fertilizer with the function of liquid film, and a production method thereof. The fertilizer is a viscous pasty material that is made by mixed materials that are biodegraded by micro organism bacterial liquid. The bacterial liquid consists of composite microbial agents, which can be used for decomposing lignocellulose, and microbiological nutrient solution. The mixed materials consist of straw powder, fertilizer, coal powder and membrane-forming material that consists of porous layered silicate powder, kaolin and improved starch. In the production method, the mixed materials are added into the bacterial liquid of the micro organisms for the reaction of biodegradation under the conditions of pH of 3.2 to 8.3 and the temperature of 0 to 75 DEG C; after 6 to 25 days, the viscous pasty product can be prepared. The spraying fertilizer can be sprayed in the field to form a liquid film that integrates the functions of fertilization and preservation of soil moisture. And the spraying fertilizer has the advantages of the solidification of water and fertilizer, environmental protection, no potential for secondary pollution, improved aggregate structure of the soil and a large amount of straw that is recycled in the field.

The object of the present invention is to provide a production method of mesoporous silica under electrolyte-free conditions by using a surfactant aggregate structure as a template and to provide mesoporous silica with a new shape, which could not be obtained in the past. It is possible to prepare mesoporous silica under electrolyte-free conditions by reacting a nonionic surfactant and a water-soluble silicate monomer with a specific structure under neutral conditions. In addition, a sheet-like mesoporous silica can be prepared in the use of a nonionic surfactant that can form a ribbon phase or a nematic phase in suitable temperature and concentration ranges in a water solution.

The biological liquid mulching filming material includes four kinds of components including kelp powder, starch phosphate, alpha-starch and ammonium carbonate. The preparation process includes soaking, decoloring and crushing kelp; adding starch phosphate, alpha-starch and ammonium carbonate; mixing in a kneading machine or screw extruder; pelletizing and drying. The biological liquid mulching filming material contains no polymer and chemical fertilizer, and has no negative effect on soil, underground water and other crop growth environment. Used mulching residue can raise organic matter content in soil to improve the aggregate structure and fix surface soil.

Disclosed is an R-Fe-B porous magnet having an aggregate structure of Nd2Fe14B crystal phases having an average crystal grain size of not less than 0.1 [mu]m but not more than 1 [mu]m. At least a part of the R-Fe-B porous magnet has a porous structure comprising fine pores having a length of not less than 1 [mu]m but not more than 20 [mu]m.

The pressure-sensitive adhesive composition of the invention includes a base polymer; and amphiphilic molecule particles that have an aggregate structure of amphiphilic molecules having hydrophilic group and hydrophobic group in the same molecule. The pressure-sensitive adhesive has stable adhesive characteristics and can be reduced in adhesive strength in a desired manner depending on how it is to be used.

The invention provides a curing agent as well as a synthesis method and application thereof. The curing agent provided by the invention is mainly synthesized by utilizing a porous mineral material, an organic flocculating agent and a conductive agent at a specific dosage ratio; the synthesis method has a simple technology and is suitable for large-scale production; the curing agent provided by the invention can be used for effectively treating serious pollution sludge, and rapidly and effectively adsorbing and locking and fixing pollutants in the sludge, so that the pollutants are difficultly released into an environment outside the sludge and the harmless effect is realized; the cured sludge is of a fluffy aggregate structure, so that the cured sludge has very good air permeability and subsequent continuous fermentation is convenient to realize; moreover, the curing agent does not change the pH (Potential of Hydrogen) value of the sludge and does not influence the physical property, the chemical property and the ecological activity of the sludge; the treated sludge can be regenerated and repeatedly utilized.

The purpose of the present invention is to provide a porous hollow fiber membrane that can efficiently separate and remove the substances to be removed such as small-particle virus contained in a solution and, at the same time, useful recovering substances such as protein can be efficiently permeated and the decrease of its transmission rate with elapse of time is small. The porous hollow fiber membrane of the present invention is characterized in that the filtration downstream surface thereof has dot-shaped or slit-shaped pores, the filtration upstream surface thereof is a network structure or a fine particle aggregate structure, the central region of the membrane is composed of a substantially homogeneous structure, the membrane wall is composed of a structure having substantially no macrovoids, the permeability for pure water is 10 to 300 L/(h·m²·bar) and the permeability for a 0.1% by weight solution of bovine γ-globulin is 30 to 100% of the permeability for pure water. Also, the hollow fiber membrane is characterized in that the permeability for a 0.1% by weight solution of bovine γ-globulin in a 20 mmol/L phosphate buffer is 30 to 100% of the permeability for a 0.1% by weight solution of bovine γ-globulin in a 20 mmol/L phosphate-buffered physiological saline solution.