187results about How to "Settle the price" patented technology

The invention belongs to the field of material science and energy storage and discloses a biomass-based porous carbon material, a preparation method thereof, and an application thereof in a supercapacitor. The method includes the steps of: 1) drying and crushing rice straws; 2) non-carbonizing or pre-carbonizing the crushed rice straws, uniformly mixing the rice straws with an activator water solution and drying the mixture, or non-carbonizing or pre-carbonizing the crushed rice straws and directly mixing the rice straws with a solid activator uniformly to produce a mixed product; and 3) placing the mixed product in a tube furnace to perform carbonizing activation in an inert gas atmosphere at high temperature; 4) washing the carbonized product in an acid solution and an alkali solution, and washing the carbonized product with deionized water to neutral, and drying the washed product to prepare the biomass-based porous carbon material. The porous carbon material has excellent supercapacitor performance and is simple in preparation method.

The invention discloses a PP/PA composite material used for a corrugated pipe, which is prepared by processing polypropylene, nylon, compatilizer, toughening agent, filling master batch, light stabilizer, heat stabilizer and processing aid. The PP/PA composite material is prepared by feeding the components into mixing equipment according to a proportion, and melting, mixing, scattering, extruding and granulating the components at the temperature of between 210 and 280 DEG C. The PP/PA composite material not only has higher toughness, excellent high impact resistance and bending property and extremely good high temperature resistance, but also are excellent in the aspects of surface gloss, abrasion resistance, chemical corrosion resistance, electric insulation and the like, and solves the defect problems of insufficient heat resistance of the conventional PP corrugated pipe, over-high price of the PA corrugated pipe; and in addition, a preparation method for the PP/PA composite material is simple and meets the requirement of industrialized production.

The invention provides a method for detecting fatty acid content in animal sample by gas chromatography-mass spectrometry (GC-MS), to solve the problems of complicated sample treatment steps and high cost in conventional methods in practical production and scientific research. The method comprises the steps of treating animal tissue samples; extracting, saponifying and methylating fatty acids; determining GC-MS conditions for fatty acid detection; analyzing data and identifying sample. The method has the advantages of simple operation, low detection limit, good reproducibility, and visual andreliable experiment data; is especially suitable for trace sample detection, can compare fatty acid compositions and contents among different samples, has wider application, and provides a new thought and method for rapid detection of fatty acid composition and content in animal sample for scientific research, clinical application, and food quality and safety monitoring.

The invention discloses a photovoltaic tracking optical angle sensor, consisting of a sensor body structure and a sensor post-stage signal processing circuit. The body structure part mainly comprises a sealing transparent glass shade 1, a top surface horizontal baffle 2, a sensor column side 3, photosensor elements 4, a light transmission slit 5, a facade groove 6 and a bottom surface photosensor element. The post-stage signal processing circuit mainly comprises a top surface photosensor element output signal processing circuit and a bottom surface photosensor element output signal processing circuit. The optical angle sensor adopts two working ways of coarse detection and precise detection. The coarse detection is finished by using four photosensor elements on the top surface which are arranged symmetrically and corresponding electric bridge comparison circuits, and the precise detection is finished by using the slit on the top surface, the photosensor element on the bottom surface and corresponding signal processing circuits. The photovoltaic tracking optical angle sensor can not only have higher tracking precision, but also have wider detection angle range, thereby well adapting to environment of wind-sand and having better capacity of resisting rain and snow.

The invention discloses a multi-soldier military training assessment system based on large space virtual reality. The system is composed of a large military training assessment space, wearable hardware equipment and military training assessment modules. The large space being a real military training field that is provided with real physical equipment and is built based on real scenes consists of areal scene action area, real scene military fortifications and a scalable laser positioning unit. The wearable hardware equipment that is worn by trained soldiers includes virtual reality data military helmets, data military tactical vests, data military jackets, data weapons and data military boots. The military training assessment module loaded in pack hosts consist of virtual scene display modules, training task selection modules, military training flow modules and military training assessment modules. Therefore, on the basis of the large space laser positioning technology, the virtual reality technology, the body motion capture technology, and the computer network technology, the trainees can experience the real multi-soldier military training according to the virtual and real combination.

This invention relates to a method for preparing a fire retardant agent for natural brucite Mg(OH)2 cables including: selecting sheet-like natural brucite, 2, pre-processing the natural brucite, 3, getting superfine micro-particles of Mg(OH)2 after entering into the gas flow to be collided, crushed and magnetized, 4, putting the micro-particles into a modifying machine, then dropping or spraying the magnetized modifier into the modifying machine to get the fire retardant agent of Mg(OH)2 of natural brucite.

The invention discloses a hydroxyapatite-based biological composite scaffold composed of hydroxyapatite, silk fibroin and chitosan, wherein a mass ratio of the components is represented by that: HA:SF:CS=(60-80):(10-20):(10-20). The composite scaffold is in a porous shape, wherein the porosity is 70 to 90%, and the pore size is 150 to 200mun. The pores are basically round, and are communicated with each other. The invention also discloses a tissue engineered bone constructed by using the hydroxyapatite-based biological composite scaffold. According to the invention, BMSCs transfected with VEGF gene is implanted into the hydroxyapatite-based biological composite scaffold, such that the tissue engineered bone is formed. According to the invention, hydroxyapatite, silk fibroin and chitosanare are adopted as raw materials, and a porogen-leaching technology is combined with a vacuum drying technology, such that the hydroxyapatite-based biological composite scaffold material is prepared. A degradation rate of the scaffold is regulated through the regulation of the proportions of the components. The pore size distribution of the composite material is controlled through the regulations of the radiuses and the addition amount of sodium chloride particles.

The invention relates to the field of environmental protection and particularly relates to a portable air quality monitoring method and a portable air quality monitoring system. The method comprises the following steps: acquiring, sending, receiving and uploading air quality information; returning accurate information; and carrying out visualized display. The system comprises a portable terminal module, an intelligent cell phone application module and a cloud background module. According to the portable air quality monitoring method and the portable air quality monitoring system provided by the invention, terminal equipment with low price and small volume is used so that the real-time monitoring of the air quality information is finished; and meanwhile, the monitoring precision is high.

The invention relates to a preparation and application of unsaturated pectic oligosaccharide and a compound biological preservative combined with the unsaturated pectic oligosaccharides, which is characterized in that: pectin is extracted from pericarps or fruit residues, pectate lyase produced by the fermentation of aspergillus niger-wz003 is added into the pectin, and then the unsaturated pectic oligosaccharide is obtained by centrifugal separation, monosaccharide removal by yeast, decoloration by active carbon, polyether sulfone membrane and membrane separation of regenerated cellulose, and the unsaturated pectic oligosaccharide can be obtained by a further drying step. The preparation method of unsaturated pectic oligosaccharide and a compound biological preservative combined with the unsaturated pectic oligosaccharides has the advantages that: self-made pectate lyase is utilized, so the raw materials are easy to obtain and the cost is low; meanwhile, the pectic oligosaccharide and the compound biological preservative has the advantages of innocuity, high efficiency, broad spectrum and wide application range and can reduce the addition of chemical preservatives.

An amorphous alloy iron core permanent magnet brushless direct-current motor consists of the two portions including a motor body and a controller, wherein the motor body portion comprises a motor upper end cap, a motor lower end cap, a motor output shaft, a shaft sleeve, an upper framework, a lower framework, a stator coil, a stator iron core body, a rotor iron core body and neodymium iron boron permanent magnet block, and the controller portion comprises an aluminum metal based printing circuit board, a control cable, a double-core single chip microcomputer, a power VMOS tube and a Hall element. The amorphous alloy iron core permanent magnet brushless direct-current motor is characterized in that both the stator iron core body and the rotor iron core body are formed by superposing iron based amorphous alloy sheets, the stator iron core body is fixed through joint supporting of the upper framework and the lower framework, the stator coil is made by winding an anaerobic copper line, all of controller elements and circuits are integrated on the aluminum metal based printing circuit board, an outer thread is carved on the supporting aluminum metal cylinder of the aluminum metal based printing circuit board, the cylinder is screwed into the inner wall thread of the motor lower end cap during installation to form a motor body and controller mechanical-electrical integrated structure.

The invention discloses a three-phase power supply default phase and power failure detection system and a braking method. The detection system comprises a three-phase power supply RST, a rectification circuit, a relay circuit, an IPM circuit, two optocoupler processing circuits, a DSP processor, a braking circuit, a Nixie tube and a servo motor and is applicable to a motor control system of a servo driver. The braking method comprises the following steps: judging abnormal conditions such as default phase and power failure of the three-phase power supply, then closing a PWM signal by the DSP processor, cutting off a busbar power supply by virtue of the relay circuit, starting and accessing the braking circuit, connecting a braking power resistor among three-phase windings of the servo motor in series for realizing short connection of the three-phase windings, and generating current in a short connection loop by virtue of residual magnetism potential of a stator winding, so that the motor is rapidly braked. The detection system and the braking method, which are disclosed by the invention, have the advantages that security protection effect on electrical equipment and personnel is realized, implementation is easy, cost is low, and the problems that a motor in existing electrical equipment adopts a band-type brake module, price is high, size is large and control and wiring are complex can be solved, so that the detection system and the braking method have a good application prospect.

The invention discloses a preparation method and an application of a palladium doped graphite phase carbon nitride nano material. The preparation method comprises the following steps: firstly preparing a graphite phase carbon nitride nanosheet by utilizing melamine, and then adding a H2PdCl4 solution, a sodium borohydride solution and a sodium citrate solution, so that the Pd-doped g-C3N4 nano material is obtained. The prepared palladium doped graphite phase carbon nitride nano material has catalytic activity similar to a biological enzyme (horseradish peroxidase), a high-sensitivity visual rapid detection method for glucose in serum is established, the method has the advantages of high sensitivity (can reach 0.0735mM), strong specificity, strong matrix interference resistance, simplicity, speediness and low cost and can be applied to field rapid visual detection for trace amount of glucose molecules in a human body serum sample, and a rapid method is provided for clinical detection of diabetes.

The invention provides an inter-domain routing method based on a distribution type multi-layer multi-domain optical network, wherein the application range is the multi-layer multi-domain optical network and an automatic switch optical network. The method is characterized in that on the basis of full-mesh topology abstraction, the problems of the price of a virtual link and the number of the available wavelength are solved; the maximum number of the available wavelength of the route is combined with the minimum route arithmetic K in the inter-domain routing arithmetic so as to reduce the probability of inter-domain blocking because of lack of available wavelength and reduce the service blocking rate of the total network.

The invention discloses an intelligence development 365 teaching auxiliary system and a method thereof. The system comprises a teacher client, an information database and a WeChat public platform, the teacher client connects recorded information and the information database, and the information database classifies information into a class management module, a student evaluation module, a notification information module, a leave message module, a curriculum information module, a score management module, a timetable management module, a curriculum synchronization module, an examination system, an online classroom module, an after-class exercise module and a homework assigning and checking module. According to the system and the method thereof, firstly, through the public platform of the third party, the school performances of students are recorded so that the problem of communication among schools, teachers, parents, and students can be solved, and the teachers and the parents have comprehensive cognition information of the students; besides, the system is provided with the after-class exercise module and the online classroom module so that after-class autonomous instruction tools are provided for the students, and problems of repeated investment and high cost of teaching auxiliary materials are solved.

The invention discloses an air travel information recommendation method and device. The method comprises steps of acquiring time filtering information set by a user and determining starting time and end time of travel according to the time filtering information; determining the departure place of the user and determining multiple travel routes according to the departure place; according to the starting time and the end time of the travel and the travel routes, searching airline ticket price of each travel route and calculating cost performance of each travel route; according to the cost performance of each travel route, screening out multiple candidate travel routes; and acquiring the user portrait of the user, acquiring a target travel route matching the user portrait from the candidate travel routes and recommending the target travel route to the user. In this way, according to the invention, a problem of quite high limitation caused by pure consideration of the price during recommendation of the airline ticket is solved and a route with quite high cost performance is recommended to the user according to the user personal information, so the success rate of the recommendation isimproved, selection time of the user is reduced and personalized demands of the user are met.

The invention discloses an intelligent adaptive cutting vibration suppression method and system of a tool room machine. The intelligent adaptive cutting vibration suppression system comprises a controller of the tool room machine; a resonance automatic avoidance module, a cutting vibration suppression module and a cutter life monitoring module are arranged in the controller; the controller is connected with a database. The database stores the resonant frequencies of all parts of a machine platform, the resonance automatic avoidance module integrates and calculates all the resonant frequencies to generate processing rotating speed, the cutting vibration suppression module measures vibration signals during processing and finely tunes the processing rotating speed, and the cutter life monitoring module records and monitors the cutter ageing state. The controller only needs to continuously monitor whether vibration signals exceed the vibration value by analyzing the resonant frequencies of the machine platform in advance and avoiding vibration generation conditions without being provided with an immediate analyzing device, and therefore cost is reduced and the problem that the high-order tool room machine is high in price and cannot be popularized easily is solved.

The invention relates to a quality control method of rhizoma gastrodiae, a decoction piece thereof and rhizoma gastrodiae extract. Based on high-performance liquid chromatography, by the aid of a one-standard multi-measurement analysis method, the contents of gastrodin components of gastrodin, p-hydroxybenzyl alcohol, parishin A, parishin B, parishin C and parishin E in the rhizoma gastrodiae arecalculated by relative correction factors, the low-cost gastrodin with stable property serves as an internal standard substance, and six effective components in the rhizoma gastrodiae are simultaneously measured. The multi-index quality control method is high in detection sensitivity, rapid in analysis and good in stability, can objectively, comprehensively and accurately evaluate the quality of the rhizoma gastrodiae, the decoction piece thereof and the rhizoma gastrodiae extract, is of great significance for ensuring the curative effect of the rhizoma gastrodiae and can solve the problems that parishin component reference substances are unstable, high in price and the like, and the quality of the rhizoma gastrodiae, the decoction piece thereof and the rhizoma gastrodiae extract cannot becomprehensively controlled.

The invention provides a permanent magnet brushless direct current motor digital speed regulator. The permanent magnet brushless direct current motor digital speed regulator comprises an upper shell end cover, a middle frame, a lower shell end cover, a rotating speed indicating dial plate, a pointer, a PCB, a three-core single-chip microcomputer, a signal conditioning chip, a VMOS transistor drive chip, a VMOS transistor and a micro-stepping motor. The permanent magnet brushless direct current motor digital speed regulator is characterized in that a steering button, a stop button, a steering indicating light-emitting diode, a stopping indicating light-emitting diode, a speed regulating rotary knob and a speed regulating dial are mounted on the upper shell end cover; rotating speed numerical scales are carved in the rotating speed indicating dial plate, the middle frame is made of aluminum alloy and composed of a middle frame hollow cylinder and a middle frame cylinder hexahedron, and the middle frame hollow cylinder and the middle frame cylinder hexahedron are combined through six connecting lugs; the upper shell end cover and the lower shell cover are connected with the middle frame cylinder, a rotary shaft of the micro-stepping motor is externally connected with the pointer, and under control of the three-core single-chip microcomputer, the position, on the rotating speed numerical scales, of the pointer is the current rotating speed of a permanent magnet brushless direct current motor.

The invention provides a fourth shaft rotary indexing machining device of a special pump cover machining center. The device comprises a rotary indexing part for realizing a rotary indexing effect of workpieces according to preset angle requirements, a fixture body part fixedly connected to the rotary indexing part for realizing mounting, positioning and clamping effects of the workpieces, an auxiliary support part connected with the fixture body part for realizing an effect of improving the system rigidity of the rotary indexing machining device, and an electric control part connected with a servo motor, a proximity switch, a micro switch and the like on the rotary indexing part for realizing functions of setting of an initial zero position of the whole device, rotation and indexing positioning by corresponding angles according to preset program requirements and control of start and stop of a machine tool of the machining center; and the whole device finally finishes large-batch continuous automatic machining problems of the machining characteristics of pump cover parts in different positions on the same machining surface.

The invention relates to the technical field of artificial intelligence. The invention discloses an intelligent recovery system for electronic products. The system comprises: a database module, a calculation module, a system operation module and a terminal equipment module, the database module comprises an external resource module, a system operation module, a recovery standard module, a data acquisition module, a metadata module and a data processing module; the calculation module comprises a recovery level module, a system quotation module and a deep learning module; the system operation module comprises a system operation module body, an application operation module and a system security module; and the terminal equipment module comprises a man-machine interaction module, an identification acquisition module and an article circulation storage module. Accurate identification, self-service recovery and reasonable pricing of the electronic product are realized, the recovery work of the electronic product is completed through intelligent whole-process self-management and control, and the recovery service quality and the operation efficiency are improved.

The invention provides a process method for recycling waste plastics. The treatment process of the waste plastics of the method is as follows: removing bulk metal, stone blocks and other substances which are difficult to crush, crushing, entering into a mixed treatment device and producing products. By adopting the technical scheme according to the invention, the various waste garbage plastics can be processed into various mixed plastic products by mixed treatment, thereby reducing the process steps of classifying of the plastics, cleaning and post-treatment in the original recycling treatment technology of the waste plastics and solving the original defects caused by landfill and burning of the garbage plastics; more important, the recycling rate of the waste plastics is improved, the circulating utilization is realized, the maximal utilization of limited resources is realized, the environmental damages caused by the waste plastics are effectively reduced and the environmental pollution caused by the original recycling technology is further solved.

The invention discloses a method for rapidly extracting fecal bacterial genome DNA and virus RNA through a paramagnetic particle method. The method comprises the steps that 1, faeces is taken and put into a centrifuge tube, a buffer A is added, crushing and standing are conducted, and supernatant is taken and put into a new centrifuge tube; 2, a buffer B and a buffer C are added into the supernatant in sequence, and water-bath heating is conducted; 3, adsorption of DAN and RNA is conducted, wherein after decomposition is completed, a buffer D and a buffer E are added in sequence, vortex oscillation, standing and magnetic separation are conducted, and solid substances are left; 4, a buffer F and a buffer G are added into a centrifuge tube with left solid substances in sequence, vortex oscillation and magnetic separation are conducted; 5, a buffer H is added into the centrifuge tube subjected to treatment in the fourth step, vortex oscillation and water-bath heating are conducted, vortex oscillation is conducted again, cooling and magnetic separation are conducted, and the supernatant is moved to a new centrifuge tube for use.

The invention provides an e-commerce grid warehouse logistics system, which comprises e-commerce unit terminals and client operation terminals distributed all over the country. The e-commerce grid warehouse logistics system is characterized by further comprising a grid warehouse logistics system general server and grid warehouse logistics sub servers arranged in provinces, wherein each sub server comprises an e-commerce grid warehouse management database and a program arranged in each province; and an individual e-commerce unit terminal is connected with the grid warehouse logistics system general server and the sub servers via internet or a mobile network for data exchange. The e-commerce grid warehouse logistics system also comprises a delivery unit server distributed in each city and each town, and the delivery unit server is connected with each territorial sub server via the internet or the mobile internet for data exchange.

The invention provides a manufacturing method for a crop straw building external wall heat insulation plate. The method includes the steps that wheat straw, rice straw, cotton stalks and other agricultural leftovers are used as the raw materials; the technological processes of chopping smashing, mixing opening, airflow laying, acupuncturing felt forming, gluing sizing and curing, inflaming retarding, corrosion and mildew preventing treating, dicing molding and the like are conducted; and finally the light and durable building external wall heat insulation plate with the inflaming retarding and sound insulating functions is manufactured. Development of green buildings of our country is facilitated, energy consumption of buildings is greatly lowered, and efficient and high-additive value recycling of crop straw is achieved.

The invention discloses a method and a device for acquiring a product bar code and a payment system of a product price. The method for acquiring the product bar code comprises the following steps that: a product counting device arranged in a shopping cart scans bar codes of all products which are placed in the product counting device; and the product counting device prints and outputs the bar codes acquired by scanning of all products. By the invention, the payment and closing efficiency of the system is improved, and a user experience is enhanced.

The invention discloses a module type permanent magnet brushless direct-current motor. The module type permanent magnet brushless direct-current motor consists of a motor module and a controller module, and has the following key points: a motor shell (2) is a circular column which is externally octagonal and internally hollow; through combining the motor shell (2) with a separation plate, components such as a rotation shaft, a wire bag, a stator core body, a rotor core body, a bracket and a neodymium-iron-boron permanent magnet required by the permanent magnet brushless direct-current motor are packaged; a controller shell is combined with an end cover to package components such as a PCB board, a VMOS power tube, a dual-core single chip and a driving chip required by a controller; and the motor shell and the controller shell are integrally connected through a fastening bolt. The invention provides a module solution which is low in cost and is capable of carrying out large-scale production and realizing integration of the permanent magnet brushless direct-current motor and the controller, and the module solution is broad in market prospect.

The invention discloses a flexible thermoelectric fiber based on a braided PN-type structure and a preparation method thereof. The flexible thermoelectric fiber comprises a textile fiber, the textilefiber is of a sine structure, and the wave crest or wave trough of the sine structure comprises a P-type thermoelectric region and an N-type thermoelectric region. A conductive region is arranged at the junction of the P-type thermoelectric region and the N-type thermoelectric region, and the conductive region is located at the endpoints of the wave crest and the wave trough of the sine structure,that is, the conductive region is located at the vertex of the wave crest and the lowest point of the wave trough. The preparation method for preparing the flexible thermoelectric fiber is simple, low in cost and easy for large-scale production; a thermoelectric structure and a braided structure are combined together, so the thermoelectric composite material has good flexibility, air permeabilityand durability, and has a wider application prospect.