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53results about How to "Break dependencies" patented technology

Ferrite ductile iron used at low temperature and manufacturing method thereof

The invention discloses chemical compositions of ferrite ductile iron used at low temperature and a manufacturing method of the ferrite ductile iron, determines the range of the chemical compositions of the ferrite ductile iron used at low temperature being minus 40 DEG C and provides a quality standard for the production of qualified and stable ductile iron workpieces. The manufacturing method comprises the steps of adopting pure iron, a carburant and silicon iron as raw materials, synthesizing and melting the raw materials in an electric furnace, conducting spheroidization on the raw materials by utilizing a low-rare-earth spheroidizing agent, and producing the ferrite ductile iron by adopting a combined inoculation method. According to the method, the purity of molten iron is improved stably, and the difficulties of high phosphorus, sulphur, titanium, other imputies and interference elements contents in the molten iron, large fluctuation and instability are solved. According to the method, a novel technical scheme is provided for the production of ferrite ductile iron workpiece which contains small, circular and smooth ductile iron and does not contain cementite and iron phosphide eutectic basically, the ferrite ductile iron can meet the demands of high-performance ferrite ductile iron workpiece in electrical industry, high-speed rail industry and the like, the dependence on imported products can be broken; and the running safety of nuclear power and the high-speed rail can be improved substantially.
Owner:ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD

Rapid building height obtaining method based on parameter-free high-resolution image

The invention provides a rapid building height extraction method based on a parameter-free image. According to the method, on the condition that parameters can be taken in with no image, a single image is utilized for calculating and obtaining the target building height. The rapid building height extraction method mainly comprises the steps of obtaining an image of a region to be extracted and known building height data inside the region to be extracted, preprocessing the obtained image, estimating the extraction difficulty of multiple feature lines of a target building, selecting the feature line of the lowest difficulty, extracting the selected feature line from the image, calculating taken-in parameters of the image, and calculating the height of the target building. According to the rapid building height extraction method, the adopted image is easy to obtain, the operability of building height extraction on the single image is greatly improved through comprehensive quantity calculation, the problems that no relative parameters exist when high-resolution image for calculating the building height is solved, and the better application potentiality is achieved on the aspects of urban planning and management, land management, digital city construction, disaster prevention and reduction and the like.
Owner:BEIJING NORMAL UNIVERSITY

Grafted gutta percha asphalt modifier

The invention discloses a grafted gutta percha asphalt modifier which relates to modification of asphalt serving as a building material in the technical field of transportation. The conventional asphalt modifier is mainly selected from byproducts of the petrochemical industry, such as SBS (Styrene Butadiene Styrene), SBR (Styrene Butadiene Rubber) and the like. The materials are nonrenewable and have high dependence on high-quality crude oil. The invention provides natural renewable high polymer gutta percha for asphalt modification, which is used for lowering the dependence of the conventional asphalt modifier on petroleum serving as a nonrenewable resource. The gutta percha is trans-form-polyisoprene which is easy for ordered agglomeration and crystallization and cannot be directly applied to asphalt modification. In the grafted gutta percha asphalt modifier, small molecules are grafted on the long chain of a gutta percha molecule to partially damage the crystallization of the gutta percha. Although the elasticity of the gutta percha is not as high as that of gutta percha treated by vulcanization, a part of plasticity is kept and the gutta percha becomes a rubber-plastic dual thermoplastic elastic material. High and low temperature performance of asphalt can be improved, and technical requirements of national and ministerial standards are met.
Owner:李志刚 +2

Stream data processing method, device and system

The embodiment of the invention provides a stream data processing method. The method is applied to a work node in a steam calculation system, and comprises the following steps of: obtaining the initial time-sharing lower limit value of a source operator; receiving the service data, and packaging the service data stream into triple stream data, wherein the triple stream data carries a time stamp and a data mark uniquely marking the service data; building a small-batch data set mini-batch according to the triple stream data and the initial time-sharing lower limit value of the source operator, wherein the time stamp is used for indicating the data order of the data in the building process, and the unique mark is used for indicating the data uniqueness in the building process; processing the small-batch data set mini-batch, and outputting processed data. The method provided by the embodiment of the invention has the advantages that the reliability of the stream calculation system is realized on the basis of the order and uniqueness of the triple stream data, and the calculation throughput of the stream calculation system can be improved on the basis of the initial time-sharing lower limit value, so the reliability of the stream calculation system is ensured, and meanwhile, the stream calculation throughput capability is also improved.
Owner:HUAWEI TECH CO LTD

Montmorillonite nano-enzyme with high peroxidase-like activity and preparation method thereof

The invention discloses a montmorillonite nano-enzyme with high peroxidase-like activity and a preparation method of the montmorillonite nano-enzyme. According to the preparation method, nitrate is taken as molten salt, iron-containing montmorillonite powder is treated by adopting a molten salt method, and the montmorillonite nano-enzyme with high peroxidase-like activity is obtained. According to the method, the natural clay mineral iron-containing montmorillonite which is rich in reserves can be used as a raw material, nitrate is used as molten salt, and the iron-containing montmorillonite is stripped by adopting a molten salt method, so that the peroxidase-like activity of the montmorillonite is improved while the microstructure of the montmorillonite is kept; the prepared montmorillonite nano-enzyme shows excellent peroxidase-like catalytic activity in normal saline, the dependence of the peroxidase-like activity of the conventional nano-enzyme on an acid environment is broken through, high-value utilization of montmorillonite mineral resources is facilitated, only two raw materials are used, montmorillonite is rich in reserve and low in price, and the method is suitable for industrial production. The preparation process is simple, the operability is high, large-scale production and preparation are easy, and the method is environment-friendly.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Liquid filling forming method for large-arch-height multi-cavity thin-wall opening inner skin

ActiveCN113385605AImprove unidirectional tensile deformation defectsSolve the problem of forming crackingAircraft componentsMechanical engineeringMaterial Deformation
The invention provides a liquid filling forming method for a large-arch-height multi-cavity thin-wall opening inner skin. The liquid filling forming method comprises the following steps that a liquid filling forming mold of an inner skin part is manufactured; an unfolded blank manufactured; liquid filling bulging for the first time is performed; secondary liquid filling bulging is performed; and the appearance is trimmed. A transition forming part is constructed, barbell type internal holes are designed, dangerous deformation areas prone to tearing are avoided, and the hole forming quality in the bulging pressure applying process is guaranteed. A sealing liquid chamber is created by additionally arranging the high-elastic-grade thin rubber pad, and the problem that the inner skin of the deep rib is cracked during forming is solved. The two-pass liquid-filling bulging process is designed, the material deformation limit of a conventional aluminum alloy sheet is improved, the monopoly situation that the large-arch height strengthened inner skin is pressed and formed for a long time is broken, dependence on manual operation skills is reduced, and the production efficiency and the product quality are improved.
Owner:XI'AN AIRCRAFT INTERNATIONAL

Combined process method for producing olefin, aromatic hydrocarbon and mesophase pitch-based carbon fiber from crude oil

The invention provides a combined process method for producing low-carbon olefin, aromatic hydrocarbon and mesophase pitch-based carbon fiber from crude oil. According to the combined process method, crude oil is cut firstly, light fractions are subjected to hydrofining, then non-aromatic hydrocarbon (alkane and olefin) and aromatic hydrocarbon components are separated through adsorption separation, and the olefin and aromatic hydrocarbon yield increasing processing technology is matched according to component characteristics, so that low-carbon olefin and aromatic hydrocarbon are produced to the maximum extent. The heavy fraction is converted into a modified product rich in olefin and aromatic hydrocarbon through a directional modification unit, modified gasoline and diesel oil are subjected to hydrofining and then returned to an adsorption separation unit, the modified heavy product is rich in polycyclic aromatic hydrocarbon, and the high-quality mesophase pitch-based carbon fiber is produced through supercritical water modification and carbon fiber processing technologies. The combined process method has the advantages of high raw material adaptability, high chemical yield, low hydrogen consumption, mild operation conditions and the like, and can be used for industrial production.
Owner:CNOOC TIANJIN CHEM RES & DESIGN INST +1

Train shaking factor detection device and method

The invention provides a train shaking factor detection device and method, and relates to the field of rail transit. Received first acceleration information of a plurality of first three-dimensional coordinate systems built along screens of intelligent terminals is converted into multiple pieces of second acceleration information of a second three-dimensional coordinate system with each train running direction as the Y axis, wherein each train is provided with a plurality of intelligent terminals moving along with the train; according to the second acceleration information, multiple pieces of train identity information and multiple pieces of position information of the intelligent terminals, shaking factor results are generated. Detection instruments do not need to be installed on the trains, the requirements of detection equipment for placement and installation postures are eliminated, dependence on the installed detection instruments in the prior art is broken through, the cost is reduced, vibration in the vertical direction and in the transverse direction of the trains are considered, vibration conditions of the trains in the longitudinal direction, namely the training running directions, are also considered, detection precision and reliability are high, and unsmooth positions and objects are precisely positioned.
Owner:SOUTHWEST JIAOTONG UNIV

Power supply method and charging method of super capacitor

The invention provides a power supply method and a charging method of a super capacitor. The power supply method comprises the following steps: reducing a constant power supply input voltage to obtain a super capacitor charging matching voltage; selecting a higher voltage in an emergency charging voltage and the charging matching voltage of the super capacitor as a charging power supply voltage of the super capacitor; adopting a super capacitor charging chip to charge the super capacitor, and controlling the charging current of the super capacitor charging chip for charging the super capacitor through the rapid charging control voltage or the emergency charging voltage; boosting the output voltage after the super capacitor is charged so as to obtain a MCU power supply matching voltage; and selecting the higher voltage in the super capacitor charging matching voltage and the MCU power supply matching voltage to be reduced so that the MCU power supply voltage can be obtained. According to the scheme, the problems of long charging time, high energy consumption, low charging efficiency, high standby power source losses and the like of the existing standby power source using a super capacitor as an intelligent door are solved.
Owner:SHANGHAI IMILAB TECHNOLOGY CO LTD

Method for forming aluminum alloy end wall column member for new-generation high-speed motor train unit

The invention relates to a method for forming an aluminum alloy end wall column member for a new-generation high speed motor train unit, belonging to the technical field of bending and forming. In the invention, a die profiling method is adopted and mainly comprises the following steps of: a, filling a cavity; b, positioning a section bar; c, profiling; and d, post-treating. The method specifically comprises the following steps: firstly, filling a continuous chaplet in the lower cavity of the section bar; then starting a hydraulic machine, raising a line segment of a lower die under the action of an ejector rod, horizontally placing the section bar on the line segment of the lower and dropping an upper die slowly so that the section bar is sandwiched between the upper die and the lower die; and then profiling: bending and deforming the section bar so that the section bar gradually fits on the section surface of the lower die, stopping the hydraulic machine, and maintaining a compaction state for a while so that the shape is stable; and finally, taking the section bar out, cutting off allowances at the two ends of the section bar, machining other geometrical characteristics, correcting parts, and clearing the surface so as to obtain the complete end wall column member. By the method, the problems existing in the forming process of the end wall column member of the motor train unit body, such as large section distortion, longitudinal profile size errors and the like, are solved, and the forming precision is improved.
Owner:JILIN UNIV

Ganoderma-lucidum-intercropping cultivation method for litchi chinensis bacteria

The invention discloses a ganoderma-lucidum-intercropping cultivation method for litchi chinensis bacteria. The method comprises the following steps: (1) culture medium preparing; (2) ganoderma lucidum cultivated species inoculation: placing fungus bags into a sterile room after the fungus bags obtained in the step (1) are cooled, inoculating the fungus bags with a ganoderma lucidum cultivated species, then, shifting the fungus bags in a culture room, and overturning the fungus bags every 3 to 6 days; (3) litchi chinensis bacterium cultivated species inoculation: shifting the fungus bags in asterile room for subpackaging after the fungus bags in the step (2) are cultured for 7 to 12 days, inoculating the fungus bags with a litchi chinensis bacterium cultivated species, and continuing to shift the fungus bags in a culture room; (4) spawn running stage; and (5) ripening stage. Compared with the prior art, the method has the beneficial effects that a symbiotic relationship between the litchi chinensis bacteria and ganoderma lucidum is established, and the dependency on termites of the litchi chinensis bacteria is broken through; when the inoculum size of the ganoderma lucidum is 10%,the content of protein in litchi chinensis bacterium fruiting bodies can be increased; when the inoculum size of the litchi chinensis bacteria is 3%, the content of polysaccharides in the ganoderma lucidum can be increased; and cultivation conditions are stable, and the popularization of the litchi chinensis bacteria is facilitated.
Owner:FOSHAN SANSHUI JIAXIN AGRI TECH RES INST GENERAL PARTNERSHIP

Device and method for detecting train shaking factors

The invention provides a train shaking factor detection device and method, and relates to the field of rail transit. Received first acceleration information of a plurality of first three-dimensional coordinate systems built along screens of intelligent terminals is converted into multiple pieces of second acceleration information of a second three-dimensional coordinate system with each train running direction as the Y axis, wherein each train is provided with a plurality of intelligent terminals moving along with the train; according to the second acceleration information, multiple pieces of train identity information and multiple pieces of position information of the intelligent terminals, shaking factor results are generated. Detection instruments do not need to be installed on the trains, the requirements of detection equipment for placement and installation postures are eliminated, dependence on the installed detection instruments in the prior art is broken through, the cost is reduced, vibration in the vertical direction and in the transverse direction of the trains are considered, vibration conditions of the trains in the longitudinal direction, namely the training running directions, are also considered, detection precision and reliability are high, and unsmooth positions and objects are precisely positioned.
Owner:SOUTHWEST JIAOTONG UNIV
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