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194 results about "Structural transformation" patented technology
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Dynamic adaptive distributed computer system
InactiveUS20050177593A1Most efficientOptimizes adaptive self-organizing operationDigital data processing detailsDigital computer detailsSearch analyticsComplex system
A system, methods and apparatus are described involving the self-organizing dynamics of networks of distributed computers. The system is comprised of complex networks of databases. The system presents a novel database architecture called the distributed transformational spatio-temporal object relational (T-STOR) database management system (dbms). Data is continuously input, analyzed, organized, reorganized and used for specific commercial and industrial applications. The system uses intelligent mobile software agents in a multi-agent system in order to learn, anticipate, and adapt and to perform numerous functions, including search, analysis, collaboration, negotiation, decision making and structural transformation. The system links together numerous complex systems involving distributed networks to present a novel model for dynamic adaptive computing systems, which includes plasticity of collective behavior and self-organizing behavior in intelligent system structures.
Owner:SOLOMON NEAL
Dynamic report generation method and platform
InactiveCN101308490AEasy to customizePromote generationSpecial data processing applicationsData displayData set
The invention provides a dynamic report generation method and a platform; a data set model defined by business characteristics is used to organize data, extract data model definition, bind data based on the data set model, configure the transformation rules of the report structure, and automatically generate a report instance through a report generator engine, so as to form a report generation method. Data items are organized through the derived relation and the extended relation among the data items; the property of the data items which need to be bound into a report template is designated through path expression when the data is bound. The changes possibly generated during the report structure generation are defined; the report generator engine adjusts the report structure based on the structural transformation rules; as long as new structural transformation rules are added, new data display ways can be added without recoding so as to improve the expansibility of the system. Therefore, the user can adopt different display ways based on the characteristics of different data to enhance the expression ability of the report.
Owner:BEIHANG UNIV
System, methods and apparatus for complex behaviors of collectives of intelligent mobile software agents
InactiveUS20060167917A1Optimizes adaptive self-organizing operationImprove productivityDigital data processing detailsArtificial lifeMolecular modellingArtificial neural network
A system, methods and apparatus are described involving the self-organizing dynamics of networks of distributed computers. The system uses intelligent mobile software agents in a multi-agent system to perform numerous functions, including search, analysis, collaboration, negotiation, decision making and structural transformation. Data are continuously input, analyzed, organized, reorganized, used and output for specific commercial and industrial applications. The system uses combinations of AI techniques, including evolutionary computation, genetic programming and evolving artificial neural networks; consequently, the system learns, anticipates and adapts. The numerous categories of applications of the system include optimizing network dynamics, collective robotics systems, automated commercial systems and molecular modeling systems. Given the application of complexity theory and modal and temporal logics to self-organizing dynamic networks, a novel model of intelligent systems is presented.
Owner:SOLOMON RES
Method for manufacturing Cr-Ni-Mo-Nb nickel base alloy seamless tube
ActiveCN106583491AAvoid extrusion delamination problemsOvercoming the problem of being unable to be cold-drawn and deformedIntermetallicHeat treated
The invention discloses a method for manufacturing a Cr-Ni-Mo-Nb nickel base alloy seamless tube. The method includes the steps of (1) tube blank forging, (2) blank preparation, (3) hot extrusion, (4) cold working and (5) heat treatment. By the adoption of the method, the hot extrusion and cold working deformation technological parameters of the alloy tube are made as for tube blank forging, and the problem of cracking (especially the problem of hot extrusion layering) in cold and hot rolling deformation zones of the steel tube is solved; and the structural transformation rule of nickel base alloy is studied, and the heat treatment intermetallic precipitated phase problem of the alloy seamless tube is also solved.
Owner:SHANXI TAIGANG STAINLESS STEEL CO LTD
Method for preparing carboxylic acid-modified vinyl chloride-vinyl acetate copolymer resins
The invention provides a preparation method of vinyl chloride-vinyl acetate copolymer resin modified by carboxylic acid, which comprises the following steps: carrying out polymerization reaction of water, 60 to 90% the total amount of vinyl chloride, vinyl acetate, unsaturated single alkyl diacid ester or acrylic acid monomer, a dispersant, a link transfer agent, a pH buffer and an initiator at 50 to 70 DEG C and under the pressure of 0.5 to 1.2 MPa; starting to continuously add the balancing amount of vinyl chloride after the conversion rate of vinyl chloride is 15 to 20%; adding a reaction termination agent when the conversion rate of vinyl chloride is 75 to 85%; and collecting the target product from the reaction result. The method can successfully introduce carboxyl into a polymer link in a water phase environment through the structural transformation of unsaturated acid (anhydride) to eliminate the normal phenomena between a coating and a substrate such as stripping off, falling off and wrinkling, thereby improving each performance of the coating. The method uses no organic solvent and adopts a water phase suspension process to meet the requirements of clean production and environmental protection.
Owner:SHANGHAI CHLOR ALKALI CHEM +1
Multiple bit chalcogenide storage device
Owner:OVONYX MEMORY TECH LLC
Irradiation cross-linked polyethylene
InactiveCN101724191AImprove heat deformation resistanceImprove mechanical propertiesCross-linkAntioxidant
The invention discloses an irradiation cross-linked polyethylene, which is characterized by comprising the following components by weight percent: antioxidant 1010: 0.5%-5%, cross-linking agent: 0.1%-1%, non-halogen flame retardant: 5%-15%, polyethylene (PE): 40%-60%, and ethylene / vinyl acetate copolymer: 20%-45%. The irradiation cross-linked polyethylene witnesses a structural transformation from a linear molecule structure to a body type three-dimensional structure; meanwhile the irradiation cross-linked polyethylene is transformed from thermal plastic to insoluble thermosetting plastic, as a result, heat-resisting deformability is enhanced, mechanical property at high temperature is improved, environmental stress cracking resistance and heat-proof aging are improved, chemical resistance and solvent resistance are enhanced, cold fluidity is reduced and previous electric properties are retained.
Owner:SHENZHEN FUSAI ENERGY TECH
Chemical synthesis technique of quinoxaline
InactiveCN101182313AShorten the development cycleLow costOrganic chemistryChemical synthesisQuinoxaline
The present invention is a chemical synthesis process of quinolone, which relates to the field of veterinary drug feed additives. The existing synthesis technology is to select from various quinoxaline compound substituted derivatives, but these compounds have relatively large toxic and side effects, and simply change The side chain can no longer meet the needs. The present invention uses heavy ion beams to modify the structure of quinoxaline to produce new compound molecules. Through pharmacodynamic research, the standard sample is separated for chemical synthesis. The present invention designs three synthetic routes. Corresponding to the three chemical synthesis processes, the new compound was identified by spectrum, and it was determined to be quinolone. After further growth-promoting and toxicity tests, it showed obvious improvement and improvement compared with the lead compound quinolone. The invention has the beneficial effects of greatly shortening the development cycle and greatly saving the development cost, and shows that quinolone is a very vital veterinary drug feed additive.
Owner:LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS
Multiple bit chalcogenide storage device
Multi-terminal chalcogenide memory cells having multiple binary or non-binary bit storage capacity and methods of programming same. The memory cells include a pore region containing a chalcogenide material along with three or more electrical terminals in electrical communication therewith. The configuration of terminals delineates spatially distinct regions of chalcogenide material that may be selectively and independently programmed to provide multibit storage. The application of an electrical signal (e.g. electrical current or voltage pulse) between a pair of terminals effects a structural transformation in one of the spatially distinct portions of chalcogenide material. Application of electrical signals to different pairs of terminals within a chalcogenide device effects structural transformations in different portions of the chalcogenide material. The structural states produced by the structural transformations may be used for storage of information values in a binary or non-binary (e.g. multilevel) system. The selection of terminals provides for the selective programming of specific and distinct portions within a continuous volume of chalcogenide material, where each selectively programmed portion provides for the storage of a single binary or non-binary bit. In devices having three or more terminals, two or more selectively programmable portions are present within the volume of chalcogenide material occupying the pore region and multibit storage is accordingly realized. The instant invention further includes methods of programming chalcogenide memory cells having three or more terminals directed at the storage of multiple bits of information in binary or non-binary systems.
Owner:OVONYX MEMORY TECH LLC
Method for optimizing personalized learning resources based on integrated modeling
ActiveCN102819769ASolve the problem of selectivitySolve resource problemsForecastingLearning basedPersonalization
The invention discloses a method for optimizing personalized learning resources based on integrated modeling. The method is modeled by multi-view integrated learning based on knowledge points and centered on the process, recommends a corresponding learning process according to a learning objective, and establishes a dynamic mapping among a learner, the learning process and the resource environment according to the actual background knowledge of the learner so as to obtain the hypergraph-described learning process and possible service resource states for the learner; on this basis, the method performs structural transformation on a process model, extracts a learning activity sequence (LAS), utilizes the relationship among the learner, the learning resources and the learning process attributes, and optimizes the learning process so as to obtain a learning plan with optimized process and resources. The method is capable of providing a relatively optimized learning sequence and a combined service resource according to the objective, the knowledge background and the resource environment of the learner, and performing dynamic adjustment according to the change of resources and objective.
Owner:孙雪冬 +1
Multiple bit chalcogenide storage device
Multi-terminal chalcogenide memory cells having multiple binary or non-binary bit storage capacity and methods of programming same. The memory cells include a pore region containing a chalcogenide material along with three or more electrical terminals in electrical communication therewith. The configuration of terminals delineates spatially distinct regions of chalcogenide material that may be selectively and independently programmed to provide multibit storage. The application of an electrical signal (e.g. electrical current or voltage pulse) between a pair of terminals effects a structural transformation in one of the spatially distinct portions of chalcogenide material. Application of electrical signals to different pairs of terminals within a chalcogenide device effects structural transformations in different portions of the chalcogenide material. The structural states produced by the structural transformations may be used for storage of information values in a binary or non-binary (e.g. multilevel) system. The selection of terminals provides for the selective programming of specific and distinct portions within a continuous volume of chalcogenide material, where each selectively programmed portion provides for the storage of a single binary or non-binary bit. In devices having three or more terminals, two or more selectively programmable portions are present within the volume of chalcogenide material occupying the pore region and multibit storage is accordingly realized. The instant invention further includes methods of programming chalcogenide memory cells having three or more terminals directed at the storage of multiple bits of information in binary or non-binary systems.
Owner:OVONYX MEMORY TECH LLC
High temperature yellowing resistant polyurethane and preparation method thereof
The invention provides a preparation method of high temperature yellowing resistant polyurethane. The method includes the steps of: (1) reacting diisocyanate with diol under the action of a catalyst to obtain a reaction product; (2) subjecting the reaction product to chain extension with a chain extender to obtain a chain extension product; and (3) reacting the chain extension product with epoxy resin to obtain high temperature yellowing resistant polyurethane. The method provided by the invention utilizes the reaction characteristics of isocyanato and hydroxyl to synthesize polyurethane that does not produce a quinoid structure, then utilizes the ring-opening reaction of epoxy group and carbamate in polyurethane to graft epoxy resin into a polyurethane chain, thus enhancing the thermal stability of carbamate bond, structural transformation and oxidation cannot occur to the carbamate bond under a high temperature condition, accordingly chromophoric group generation can be inhibited, thereby reaching the purpose of no yellowing of polyurethane under high temperature. The invention also provides the high temperature yellowing resistant polyurethane.
Owner:GUANGDONG UNIV OF TECH
Preparation method of phosphorylated epimedium polysaccharide
ActiveCN105601760AImmunomodulatory in vitroAntiviralAntinoxious agentsAntiviralsEpimediumPhosphorylation
The invention belongs to the technical field of preparation and structural transformation of traditional Chinese medicine polysaccharide and relates to a preparation method of phosphorylated epimedium polysaccharide. The preparation method of the phosphorylated epimedium polysaccharide comprises the following steps: carrying out heating reaction on a phosphorylating reagent (sodium tripolyphosphate-sodium trimetaphosphate), epimedium polysaccharide and sodium sulfate for a period of time under alkaline condition, carrying out phosphorylation molecular modification, and selecting out optimal conditions for phosphorylation modification on the epimedium polysaccharide by carrying out a response surface experiment with content of phosphate radicals of products and reagent ratio, reaction temperature, reaction pH value and reaction time as factors. After the phosphorylated epimedium polysaccharide is prepared, in vitro activity of a modified product is studied, and results show that the phosphorylated epimedium polysaccharide has a certain immunoregulation, antiviral and antioxidant effects.
Owner:NANJING AGRICULTURAL UNIVERSITY
Chemical metallurgy method for extracting beryllium oxide from chrysoberyl
InactiveCN103088206AFully consider the protectionFully consider the comprehensive utilizationProcess efficiency improvementWater vaporDump leaching
The invention discloses a chemical metallurgy method for extracting beryllium oxide from chrysoberyl. The chemical metallurgy method is a comprehensive treatment technology for carrying out chemical metallurgy on refractory chrysoberyl with not more than 0.5% of Be. The chemical metallurgy method is characterized by comprising the following steps of: carrying out structural transformation roasting on the minerals by using ammonium fluosilicate as a structural transforming agent in the presence of activator limestone; cooling the roasted minerals and using water to spray dump leaching beryllium; precipitating beryllium for the ammonium fluoroberyllate solution by using ammonium bicarbonate to obtain basic beryllium carbonate; calcining the basic beryllium carbonate to release carbon dioxide and water vapor to obtain the product beryllium oxide; and concentrating and crystallizing a beryllium-precipitated solution which is the beryllium fluoride solution under reduced pressure, and drying the concentrated and crystallized solution in air flow to obtain the product ammonium fluoride. The chemical metallurgy method disclosed by the invention is simple in process, low in price, free of pollution, high in metal recovery rate, low in production cost and capable of effectively separating and extracting beryllium in the chrysoberyl.
Owner:戴元宁
SCR denitration device and denitration method applicable to middle and small-size boilers
The invention discloses a SCR (Selective Catalytic Reduction) denitration device and a denitration method applicable to middle and small-size boilers. Through structural transformation of an economizer inside a vertical flue, a part of a heated surface is preserved, the other part of the heated surface is moved to a horizontal section of the flue, the rest flue is partitioned in an inclined manner so as to be used for elicitation and introduction of the denitration device; a two-stages dedusting ammonia injection system is arranged so as to mix fume with ammonia, the mixture passes through a catalyst preserved layer and enters a SCR reactor for catalysis reaction, most part of NOx is transformed into N2, the fume after denitration is elicited out from two sides of the lower part of the reactor, enters the flue from two sides of a side wall of the flue at the tail part, and is finally discharged outside the flue through an air pre-heater. The SCR denitration device meets the requirement on the space where the denitration flue needs to be pulled out and led in when the SCR denitration device is additionally arranged on the middle and small-size boilers, sufficient, rapid and effective mixing of ammonia and fume inside a low narrow flue is achieved, and the SCR denitration device has the advantages that the denitration system is compact in structure, high in efficiency, low in catalyst abrasion, and the like.
Owner:SOUTHEAST UNIV
Doped Sodium Manganese Oxide Cathode Material for Sodium Ion Batteries
A sodium transition metal cathode material for a rechargeable sodium battery having a P2 layered bronze crystal structure, comprising at least 55 mol % manganese, wherein the manganese valence state is at least 3.75. The material undergoes a structural transformation to a secondary cathode material by extraction of sodium during the 1st charge of a rechargeable sodium battery comprising the sodium cathode material. The material has either a composition NaxMO2 where M=Mn1-y-zLiyAz where z<0.2 and y<0.33 and 0.66<x<0.95, and wherein A consists of either one of more elements of the group Ti, Fe, Ni, Mg and Co, or a composition NaxMO2 where M=LiaMn1-a-b-cMgbAc where 0<a<0.2, c<0.2 and 0.2<a+b<0.46 and 0.66<x<0.95, and wherein A consists of either one of more elements of the group Ti, Fe, Ni and Co.
Owner:UMICORE AG & CO KG +2
Dynamic adaptive distributed computer system
InactiveUS7277876B2Effective maintenanceLess computing capacityDigital computer detailsInference methodsObject RelationshipComplex system
Owner:SOLOMON NEAL
Multiple bit chalcogenide storage device
Owner:ENERGY CONVERSION DEVICES INC
Method and device for automatically optimizing electric-arc welding process parameters
The invention discloses a method and device for automatically optimizing electric-arc welding process parameters. The method comprises the following steps of: simulating welding heat-cycle curves of electric arc welding under different process parameters by utilizing a computer technology, carrying out superimposition with a continuous cooling structural transformation diagram of a welding base material, and predicating corresponding welding seams and the structure of a heat-affected zone till the requirement is met, so that the optimization of the electric-arc welding process parameters is automatically realized. Therefore, the method and device disclosed by the invention has the advantage that the full-scale testing times for obtaining excellent welding seam structures is greatly reduced.
Owner:珠海奥邦焊接科技有限公司
Heat treatment method after forging of ultra-supercritical high and medium pressure rotor steel
ActiveCN101831535AShorten the timeEliminate forging stressFurnace typesHeat treatment furnacesTransition temperatureEnergy consumption
The invention discloses a heat treatment method after forging of ultra-supercritical high and medium pressure rotor steel. The heat treatment after forging of ultra-supercritical high and medium pressure unit rotor steel X12CrMoWVNbN10-1-1 and Cr10.5Mo1W1NiVNbN is carried out by the steps of: step 1. austenite homogenization treatment; step 2. carrying out structural transformation when balanced structure transformation temperature is reached by air cooling; step 3. overall structure softening; and step 4. cooling in a speed limit furnace till discharging. Since the rotor steel is directly put into the furnace for austenization after being forged, the invention has the advantages of short time and good austenite effect, not only eliminates the forging stress, but realizes the homogenization of inner and outer structures of forging. The heat treatment method after forging has the advantages of simple operation, low cost and low energy consumption, and can meet the property requirement of workpieces.
Owner:SHANGHAI ELECTRIC SHMP CASTING & FORGING CO LTD +1
Four-roller breaker hydraulic control system
InactiveCN104088823ASolve the problem of short holding timeSolve the serious problem of oil leakageMechanical apparatusGrain treatmentsHydraulic cylinderMagnetic exchange
The invention discloses a four-roller breaker hydraulic control system which comprises an oil tank (1), a filter (2), a gear pump (3), a motor (4), a pressure gauge (5), a two-position two-way magnetic exchange valve (6), a system overflow valve (7), a one-way valve (8), a three-position four-way magnetic exchange valve (9), a hydraulic control one-way valve (10), a pressure relay (11), an energy accumulator (12), a safety valve (13), a one-way throttling valve (14) and a synchronous hydraulic cylinder (15). Due to structural transformation, the problem that the dwell time of the system is short is solved, and in addition, production automation is achieved; during iron passing protection, a rod cavity of the hydraulic cylinder automatically sucks oil to improve the automatic iron passing protection function of equipment, and a hose insulates shock so that the problem of severe field oil leakage is thoroughly solved.
Owner:洛阳天信重工机械有限公司
Halogen anion doped lithium-rich positive electrode material as well as preparation method and application of positive electrode material
InactiveCN103956456AInhibit oxygen evolutionImprove the first charge and discharge efficiencyCell electrodesSecondary cellsHalogenPhysical chemistry
The invention relates to a halogen anion doped lithium-rich positive electrode material of a secondary battery as well as a preparation method and an application of positive electrode material. The expression formula of the halogen anion doped lithium-rich positive electrode material is Li[Li(1-2x) / 3MxMn(2-x) / 3]O2-zAz, wherein M is at least one or a combination of Co, Ni, Al, Mg, Zn, Ga, B, Zr, Ti, Ca, Ce, Y and Nb, A is at least one or a combination of Cl, Br or I, x is greater than 0 and less than 0.5, and z is greater than 0 and less than or equal to 0.5; when M is one or the combination of Ni and Co and A is Cl, x is not equal to 0.2. The preparation method comprises the following preparation steps: in the process of preparing a lamellar lithium-rich oxide positive electrode material Li[Li(1-2x) / 3MxMn(2-x) / 3]O2, introducing halogen anions A according to the stoichiometric ratio to prepare a solution, and then carrying out solidification, drying and calcination, thereby obtaining the halogen anion doped lithium-rich positive electrode material. If the halogen anion doped lithium-rich positive electrode material is used as the positive electrode material for a lithium battery, the first charge-discharge efficiency of the material can be improved; the structural transformation of the material in electrochemical cycle is inhibited. The electrochemical properties of the lithium-rich lamellar oxide positive electrode material are improved, and the lithium-rich lamellar oxide positive electrode material has the characteristics of high first charge-discharge efficiency, high capacity, good cycle performance, simple preparation process, good reproducibility and the like.
Owner:NANKAI UNIV
Method for reducing center martensitic structure of high-carbon steel coil rod
The invention discloses a method for reducing the center martensitic structure of a high-carbon steel coil rod, belonging to the technical field of steel rolling. Microscopic study is performed on the process control and finish rolling control of a heating furnace in a high speed wire rod mill, the cooling process control of air-cooled wire rods, and in particular the cooling process control of the air-cooled wire rods after rolling; in-depth analysis is performed on the transformation process of the center segregated structure of the high-carbon steel from the perspectives of structural transformation thermodynamics and dynamics; a more pertinent quantification operational method is provided for each process link; and the invention is well suited to optimization of the production process of high-carbon steel coil rods in a high speed wire rod mill. By producing 130mm<2> of continuously cast 82B-1 coil rods by the method disclosed by the invention, the martensitic structure in the center of a coil rod is obviously reduced, the aging period of the coil rods is shortened, the plasticity index is obviously improved, and cup and cone fracture and strand breakage of steel wires in the drawing process of a user are notably reduced.
Owner:SHOUGANG CORPORATION
Boracic low-carbon hot rolling pickling plate and production method thereof
InactiveCN108517459AImprove performanceLower transition temperatureTemperature control deviceBoronAustenite
The invention relates to the field of hot rolling pickling plates, in particular to a boracic low-carbon hot rolling pickling plate and a preparation method thereof. Boron with the content of 0.0010-0.0030% is added into a low-carbon hot rolling pickling plate, wherein the thickness is larger than or equal to 2.0 mm and less than or equal to 6.0 mm, and thus based on the ideal structural performance, multiple kinds of measures for controlling the surface quality can be taken, so that steel plate mixed crystals are effectively avoided, and the problem of rolled edge mixed crystals is especiallysolved. The boron is added into the low-carbon hot rolling pickling plate to reduce the transformation temperature from austenite to ferrite, so that structural transformation does not happen at thefinishing rolling temperature of 840-860 DEG C at a hot rolling stage, that is to say, no mixed crystal defects exist, finally, the even structural performance is obtained, and meanwhile, an advantageis created for inputting a large amount of descaling water to overcome scale defects at the hot rolling stage.
Owner:BENGANG STEEL PLATES
Quenching-tempering heat treatment method for large-scale module die steel
The invention discloses a quenching-tempering heat treatment method for large-scale module die steel. The method comprises the following steps of carrying out heating; carrying out heat preservation;carrying out water-cooling and air-cooling alternate quenching multiple times; and carrying out high-temperature tempering. The method has the advantages that a water-quenching air-cooling mode is adopted, water-lifting air-cooling is carried out multiple times, self-tempering is carried out, the surface structural transformation stress is eliminated, the cooling strength is within oil quenching and water quenching, and therefore through quenching of a large-scale module is ensured, and meanwhile, water-quenching cracking is avoided; the perlitic transformation caused by water quenching is avoided, then water lifting is carried out multiple times to decrease the cooling speed, so that the quenching stress is decreased, and therefore the cooling speed of a high-temperature section is increased, and meanwhile, quenching cracking is also prevented; and when the temperature of martensite cooled to 1.2738 begins to change temperature, air cooling is carried out, so that the forming speed ofthe martensite is decreased, and therefore the structural stress can be greatly decreased, and cracking of a low-temperature section can be avoided.
Owner:武钢集团襄阳重型装备材料有限公司
Method for extracting and separating cucurbitacin B
The invention discloses a method for extracting and separating cucurbitacin B, which comprises the following steps: firstly, melon pedicels as a raw material are crushed and are refluxed and extracted by ethanol diacolation or ethanol, an extracting solution is extracted by ethyl acetate more than three times after being concentrated, and the ethyl acetate is recovered to obtain a total cucurbitacin extract; secondly, the total cucurbitacin extract is taken to be dissolved in a 25 to 45 percent of ethanol water solution, and the hydrolysis reaction is carried out in the presence of acetic acid; the pH value is adjusted to be neutral after full reaction, and the extract is concentrated to dry; and then the obtained extract is treated by purification so as to obtain a cucurbitacin B product with more than 60 percent of cucurbitacin B content, and the concentration of the acetic acid is 0.1 to 0.3 mol / L. Compared with the prior art for extracting and separating cucurbitacin B, the invention has the following advantages: the analogue (such as cucurbitacin B glucoside) of the cucurbitacin B is converted into the cucurbitacin B by the structural transformation in the process of extraction, so that the extraction rate of the cucurbitacin B is improved, the production process is simple, and the operation is simple.
Owner:ZHEJIANG UNIV OF TECH
Preparation process for cornstalk pentosane sulfate
The invention relates to a preparation process for cornstalk pentosane sulfate and belongs to the technical field of natural product structural transformation and application. According to the preparation process for the cornstalk pentosane sulfate, the target product pentosane sulfate is synthesized via a two-step reaction; the molecular structure of the pentosane sulfate is similar to that of heparin and the pentosane sulfate can be used as a raw material for synthesizing an anticoagulant active drug. The preparation process for the cornstalk pentosane sulfate, provided by the invention, has the advantages of simple and convenient operation, small pollution, high sulfation degree, wide raw material source, good market application prospect and so on.
Owner:CHANGCHUN UNIV OF TECH
Plastic mould steel and processing technology thereof
The invention discloses plastic mould steel and a processing technology thereof. Main alloy elements in chemical components of the plastic mould steel comprise, by mass, 0.20-0.32% of C, 0.25-0.35% ofSi, 1.10-1.50% of Mn, 1.20-1.60% of Cr, 0.40-0.48% of Mo, 0.05-0.10% of V, 0.025% of P or the less, 0.005% of S or the less, 0.30-1.0% of Ni, 0.15% of Nb or the less and the balance Fe. The plastic mould steel has high polishing performance and processing performance, and in addition, the internal hardness and the surface hardness of the plastic mould steel are more uniform; heat treatment structural transformation in the processing technology is single, and the metallographic structure is more delicate and more uniform; materials are produced with the large forging ratio, and the cores of the materials are compact in structure; the deviation of the surface toughness and the core toughness of the materials is extremely small; and the processing period of a mould is shortened, and the costis reduced.
Owner:浙江天基重工机械有限公司
Preparation method for MOF crystal form transformation
ActiveCN111440329APromote crystallizationTo achieve a topology changeBulk chemical productionInorganic saltsCombinatorial chemistry
The invention discloses a preparation method for MOF crystal form transformation. The preparation method comprises the following steps: dissolving organic ligand 2-methylimidazole (HIm) by adopting amixed solvent of ionic liquid and water, and mixing with a Zn inorganic salt aqueous solution to realize structural transformation from 2D MOF to 3D MOF, wherein the ionic liquid is a hydrophilic functional solvent composed of imidazole cations, the 2D MOF is two-dimensional zeolite imidazole ester (ZIF-L), and the converted 3D MOF is three-dimensional zeolite imidazole ester (ZIF-8). The preparation method disclosed by the invention not only can realize conversion of an MOF skeleton structure, but also can accelerate nucleation and crystallization of MOF and regulate and control product morphology, and is an environment-friendly method for preparing zeolite imidazolate MOFs with different structures and morphologies.
Owner:JIANGNAN UNIV
Voice data structural transformation method based on open source API and system thereof
InactiveCN105957517AEasy to storeEasy to manageSpeech recognitionFiltrationApplication programming interface
The invention relates to a voice data structural transformation method based on an open source API (Application Programming Interface) and a system thereof. The method comprises the steps of extracting voice data from a data source; cutting, fragmenting and performing non-speech filtration treatment on the voice data to obtain the characteristic text data of the voice data; utilizing an open source speech recognition API to perform speech recognition processing on the characteristic text data to obtain voice frequency, loudness and emotion information and a speech recognition sequence; and performing fusing and structural text identification on the voice frequency, loudness and emotion information and the speech recognition sequence to generate structural voice data. The technical scheme realizes voice data structural transformation, and is in favor of voice data storage and management; in addition, the system possesses higher operating efficiency, and has a sound emotion analysis function; the accuracy of the voice data structural transformation method and system based on an open source API is improved.
Owner:POWER GRID TECH RES CENT CHINA SOUTHERN POWER GRID +1
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