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493results about How to "Large granularity" patented technology

Uncertain space-time trajectory data range query method under road network environment

The invention discloses an uncertain space-time trajectory data range query method under road network environment. The process includes that firstly, a road network is divided into divided areas with the number of K; a hash table is established according to sides and divided corresponding relations; boundary points of the divided areas are calculated, and a two-dimensional space R tree index is established; the shortest path distance among the boundary points of each dividing is calculated; a one-dimensional R tree time quantum index is established for each dividing, and a B+ tree for storing trajectory data for each one-dimensional R tree is established; then, the earliest arrival time and the latest leaving time of a certain trajectory and an uncertain trajectory are calculated, and a unit segment assemble and divided beginning and ending time are inserted into time interval components; and finally, according to the dividing of a query point, distance information of a divided boundary point and the query point is calculated, and therefore a query result is obtained. According to the uncertain space-time trajectory data range query method under the road network environment, a small amount of input/output (I/O) operations and online calculation are only needed to be performed for a part of dividing, the query results can be obtained, and the query results are high in accuracy degree and fast in response speed.
Owner:ZHEJIANG UNIV

Control method for aerosol in flue gas desulfurization by utilizing ammonia method and master desulfurizing tower

The invention discloses a control method for aerosol in flue gas desulfurization by utilizing an ammonia method and a master desulfurizing tower, and the control method is characterized in that flue gas enters the master desulfurizing tower after being cooled to the relative humidity of 90 to 100% and the temperature of 60 to 80 DEG C through high-pressure waster mist or prewashing temperature reduction; the generation of the aerosol particles in the desulfurization by utilizing the ammonia method is reduced by optimizing desulfurization operating conditions, and the formed aerosol particles are condensed to grow big and are partially washed to be eliminated through a desulfurizing solution; an appropriate amount of steam is injected into the saturated flue gas through desulfurizing and eliminating the partial aerosol particles; the oversaturated water vapor environment required by the secondary condensation and the growth of the aerosol particles is established on the top of the master desulfurizing tower; and the condensed and the grown aerosol particles are eliminated through a high-efficiency demister. The invention combines the formation mechanism of the aerosol in the flue gas desulfurization by utilizing the ammonia method; and the formation of the aerosol is reduced by optimizing the process conditions of the desulfurization operation and the elimination of the formed aerosol is promoted by utilizing a steam phase change principle at the same time so that the exhaust problem of the aerosol in the flue gas desulfurization by utilizing the ammonia method can be effectively solved.
Owner:SOUTHEAST UNIV

System and method based on SDK for rapidly building mobile internet application module

The invention relates to the technical field of mobile internet application and development, and particularly relates to a system based on an SDK (Software Development Kit) for rapidly building a mobile internet application module. The system sequentially comprises a content displaying layer, an interface framework layer, a function module layer and a configuration management layer from the top to the bottom; by building an SDK module on the basis of an API uniform interface, the SDK module is encapsulated into an API which can be directly integrated to an objective and used in the mobile internet, so that the suitability, accuracy and robustness of the SDK can be ensured, and the system is suitable for rapidly and effectively deploying in mobile internet application. The invention further provides a method based on the SDK for rapidly building the mobile internet application module, the method is applied to the above system and comprises the following steps: firstly, the interfaces of the SDK are unified so as to build the SDK module with the API uniform interface, then the API of the SDK module is directly integrated to the objective and used in the mobile internet, so that the burdensome work of editing codes to SDKs with different versions is eliminated, the workload of mobile internet development is reduced, and the development efficiency is improved greatly.
Owner:XIAMEN ZHUOXUN INFORMATION TECH

Monodisperse large-grain-diameter and high-stability acid silica sol and preparation method thereof

The invention relates to monodisperse large-grain-diameter and high-stability acid silica sol and a preparation method thereof. The silica sol comprises water and silica colloid, wherein the silica colloid is dispersed in the water and has the granularity being 10 to 100 nm, the pH value of a sol system is 1.0 to 6.0, and the solid content is 10 to 35 percent. The preparation method comprises thefollowing steps that: firstly, active silicic acid is prepared through an ion exchange method and is added into boiling water glass to be prepared into basic silica sol with the uniform granularity, organic acid is adopted for surface modification, finally, the acid silica gel is prepared through iron exchange, and the silica sol is concentrated to the required concentration. Small-granularity and low-concentration products are adopted as the mother liquid, the sol grain growth process is controlled through controlling the dripping times of the active silicic acid and simultaneously regulating the pH value and the reaction time of a reaction system, and the monodisperse large-grain-diameter and high-stability acid silica sol products are obtained. The product stability is good, the coagulation and gel phenomena can not occur after the storage for more than six months at the normal temperature, the production period is short, and the mass industrial production is favorably realized.
Owner:HUBEI UNIV

Continuously controllable acesulfame crystallization device

The invention discloses a continuously controllable acesulfame crystallization device. The continuously controllable acesulfame crystallization device comprises: a crystal growing device, a first conveying pump, a first-grade crystallizer, a second conveying pump, a second-grade crystallizer, a third conveying pump, a thickening device, a fourth conveying pump and a crystal slurry tank; the crystal growing device comprises at least one crystal growing kettle; a discharging hole of each crystal growing kettle is connected with a stop valve in series and then is communicated with an inlet of the first conveying pump; the first-grade crystallizer comprises a first-grade crystallizing kettle, a first-grade cooler and a first-grade circulating pump; an outlet of the first conveying pump is communicated with a lower circulating hole of the first-grade crystallizer; the second-grade crystallizer comprises a second-grade crystallizing kettle, a second-grade cooler and a second-grade circulating pump; the discharging hole of the first-grade crystallizing kettle is communicated with the inlet of the second conveying pump; the outlet of the second conveying pump is communicated with the lower circulating hole of the second-grade crystallizer; the discharging hole of the second-grade crystallizing kettle is communicated with the thickening device through the third conveying pump; the outlet of the thickening device is communicated with the inlet of the crystal slurry tank through the fourth conveying pump. The crystallization device provided by the invention is high in production efficiency and an obtained acesulfame crystal has good quality and large granularity.
Owner:南通宏信化工有限公司

Obstacle region division method based on minimum enclosing circle and maximum inscribed circle

An obstacle region division method based on a minimum enclosing circle and a maximum inscribed circle includes the following steps of: obtaining a maximum steering curve of a moving object according to the speed and the direction of the moving object; loading m obstacle regions of a map, dividing the obstacle regions into N sub-regions according to an initial programming granularity N, and generating the minimum enclosing circle and the maximum inscribed circle for each sub-region; drawing tangent lines on the two types of circles from the current position of the moving object, respectively defining the regions enclosed by the tangent lines as current forbidden regions and current limitation regions with each number of m*N, then respectively taking union and obtaining a current total forbidden region and a current total limitation region, and defining the regions except the two regions as safe regions; judging whether the maximum steering curve of the moving object and the tangent lines of the two types of circles have intersection points, and judging whether the granularity N is needed to increase according to the obstacle threat degree; for high threat degree obstacle, only allowing programme in the safe regions, and for a general threat degree obstacle, allowing programme in part limitation regions and safe regions; and outputting the region division of a current total programming region, the current total limitation region and the current total forbidden region.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Method for preparing binder-free graphite product

The invention provides a method for preparing a binder-free graphite product, which is characterized in that the graphite product is composed of crude petroleum coke and coal pitch mesophase pellet powder, and is characterized by comprising the following steps: drying, dewatering and smashing the crude petroleum coke; grinding the smashed crude petroleum coke to obtain crude petroleum coke powder by using a ball mill and an airflow pulverizer in sequence; heating the coal pitch mesophase pellet powder to carry out pre-oxidation treatment; cooling to room temperature; fully mixing by a blender; charging under vibration and preforming; placing blended power into a hydraulic cylinder, and obtaining isostatic pressing graphite green bodies through the steps of boosting pressure, maintaining pressure, reducing pressure and demoulding in an isostatic pressing forming process; placing the isostatic pressing graphite green bodies into an iron crucible; taking river sand and metallurgical coke powder as fillers in the roasting process, wherein the fillers are used for preventing the products from oxidization and deformation and fixing green body shapes; putting the iron crucible filled with the isostatic pressing graphite green bodies into a roasting furnace for roasting treatment to obtain isostatic pressing graphite roasting products after roasting; carrying out graphitization treatment on the isostatic pressing graphite roasting products by using a graphitized furnace to obtain the binder-free graphite products.
Owner:JILIN CARBON

Recognition method for Web page link blocks based on block tree

The invention provides a recognition method for Web page link blocks based on a block tree. On the basis of the recognition method, link block distinguishing and estimating indexes are provided, and meanwhile two basic block traversing and distinguishing algorithms including a forward link block distinguishing method and a backward link block distinguishing method are provided; the forward distinguishing method is high in recognition speed and can be used for analysis of indexing type Web pages and text extraction and application, and the granularity of link blocks is large; the backward distinguishing method can control the granularity, quantity and scale of the link blocks easily and flexibly, ensures refinement and integrity of the link blocks and finally achieves comprehensiveness of covering Web page link with the link blocks. The method not only can be used in places with the fine-granularity requirement for the link blocks, but also can be used in places of page denoising, text extracting, automatic template generating through text abstracting and others; the provided block tree serves as the basis of Web page analysis and processing and can be widely applied to Web data preprocessing, data mining and other fields in combination with the two provided traversing and distinguishing methods.
Owner:湖北云服科技有限公司

Device and method for enhancing removal of fine particle substances in flue gas desulfurization process of fire coal

The invention aims at the characteristic of higher relative humidity of the flue gas of fire coal after spray drying, calcium spraying in a furnace, tail humidification, activation and desulfurization are carried out on the flue gas of the fire coal and provides a device and a method which apply a vapour phase change principle to realize the effective removal of SO2, also induce the coagulation and the growth of fine particle substances and remove the fine particle substances with high efficiency. The device for enhancing the removal of the fine particle substances in a flue gas desulfurization process of the fire coal comprises a desulfurizing tower or a humidification activator, an electrostatic dust collector, a flue gas reheater and a draught fan, wherein the electrostatic dust collector, the flue gas reheater and the draught fan are sequentially connected with the desulfurizing tower or the humidification activator by pipelines, a vapour phase change chamber is provided with a rinsing waste liquid outlet, a flue gas inlet and a flue gas outlet, the flue gas inlet is connected with a flue gas outlet of the electrostatic dust collector, the flue gas outlet is connected with the flue gas reheater, a vapour nozzle, a defogger and a rinsing water nozzle are sequentially arranged between the flue gas inlet and the flue gas outlet of the vapour phase change chamber, an inside lining of the vapour phase change chamber is provided with an anticorrosion material with low surface energy, and the anticorrosion material with low surface energy has double effects of increasing the phase change effect and preventing corrosion.
Owner:SOUTHEAST UNIV

Method and apparatus for preparing large particle size spherical tricobalt tetreoxide

ActiveCN103771539AOvercome the problem of no attachmentLarge particle sizeCobalt oxides/hydroxidesCobalt(II,III) oxideFilter press
The present invention discloses a method for preparing large particle size spherical tricobalt tetreoxide. The method comprises: preparing a mixed solution, preparing a hydroxide solution, feeding, and preparing tricobalt tetreoxide with a predetermined particle size, wherein the particle size of the tricobalt tetreoxide particles on the material outlet is measured during preparation of the tricobalt tetreoxide with the predetermined particle size, the suspension in the material outlet is re-introduced into the reaction apparatus when the particle size is less than the predetermined production particle size of the tricobalt tetreoxide so as to continuously carry out a reaction until the particle size of the tricobalt tetreoxide particles on the material outlet of the reaction apparatus is not less than the predetermined production particle size, and then the suspension is introduced into the press filter to filter to obtain the spherical tricobalt tetreoxide. With the method, the large particle size battery-grade spherical tricobalt tetreoxide with the diameter of 14 mum and above can be prepared. The present invention further discloses an apparatus for preparing the large particle size spherical tricobalt tetreoxide.
Owner:NINGBO RONBAY LITHIUM BATTERY MATERIAL CO LTD

Preparation method of carbon nanotube-alumina composite reinforced magnesium-based composite material

The invention discloses a preparation method of a carbon nanotube-alumina composite reinforced magnesium-based composite material, which relates to the manufacture of magnesium-based alloy by using a casting method. The preparation method comprises the steps of: step 1, calcining and reducing raw materials of ferric nitrate nonahydrate and alumina in the ratio of (0.07-1.00):1 to obtain an iron / alumina composite catalyst, and finally, performing catalytic pyrolysis reaction by using the mixed gas of nitrogen gas and ethylene in the volume ratio of (6-12):1 for uniformly dispersing carbon nanotubes on the surface of the alumina, so as to prepare a carbon nanotube-alumina composite reinforced phase; and step 2, adding the carbon nanotube-alumina composite reinforced phase to a molten magnesium base material, and stirring and casting to prepare the carbon nanotube-alumina composite reinforced magnesium-based composite material, wherein the added carbon nanotube-alumina composite reinforced phase accounts for 1-15% of the molten magnesium base material by mass percentage. According to the invention, the defect of a magnesium-based alloy texture in the magnesium-based composite material produced in the prior art is overcome, the excellent enhancing effect of the carbon nanotubes in a magnesium matrix can be brought into full play, and the comprehensive performance of the magnesium-based composite material is ensured to be enhanced.
Owner:HEBEI UNIV OF TECH +1

Preparation of carbonaceous composite pellet containing manganese

InactiveCN101407858ACompound conceptReduce manufacturing costSlagManganese
The invention discloses a preparation method of a composite pellet, which includes the working procedures of preparing materials, measuring, mulling, pressing and drying. Compared with the prior art, the preparation method is simple to be operated and has the advantages that: (1) the composite conception is broad; the pellet not only has a manganese material, but also has a reducer needed by smelting and takes coal for replacing tar and reducing the production cost; the material containing manganese not only includes the powder of a manganese ore (molybdenum concentrate, imported fine ore, slag rich in manganese, sintering fine ore and baking fine ore), but also includes manganese soot and improves the operating factor of resources; (2) the materials adopted by the composite pellet are broad in granularity; the granularity of the manganese ore (molybdenum concentrate, slag rich in manganese, sintering fine ore and baking fine ore) is between 0 and -3mm, the granularity of the coal is between 0 and -5mm, and the production technique is simplified; (3) drying is carried out under lower temperature, thus saving energy resources; and (4) a dry power sintering agent is used and the operation is simple and convenient. The composite pellet is applied to smelting manganese series iron alloys by electric furnaces and the smelting effect of the electric furnaces is good.
Owner:云南文山斗南锰业股份有限公司 +1

Freezing low-temperature superfine grinding method for traditional Chinese medicine

The invention discloses a freezing low-temperature superfine grinding method for traditional Chinese medicine. The method includes the following steps of providing the clean, dry and segmented traditional Chinese medicine, adding water to the traditional Chinese medicine so that the traditional Chinese medicine can be fully soaked, completely removing moisture through settling, keeping the surfaces of the traditional Chinese medicine dry, conducting freezing at the temperature of -24 DEG C to -28 DEG C for 3 hours to 4 hours, and conducting superfine grinding on the frozen traditional Chinese medicine in the environment with the temperature lower than -10 DEG C. According to the method, due to the fact that the traditional Chinese medicine is frozen and can be easily smashed, the fineness degree of the dried traditional Chinese medicine powder where superfine grinding is conducted can reach 0.006 micron to 0.5 micron, effective constituents of the traditional Chinese medicine are fully released, the absorption rate and the utilization rate of the traditional Chinese medicine are increased, the obtained traditional Chinese medicine powder can be directly used for making medicine and health care food through extracting and processing, and the medicinal value of the traditional Chinese medicine is better utilized.
Owner:JILIN AODONG SHIHANG PHARMA
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