40results about How to "Guaranteed number" patented technology

The invention relates to an embedded NV-center diamond based magnetic field metering device. A nanometer diamond particle with a negatively charged nitrogen-vacancy(NV)-center is adopted as a sensitive element. Phase-shift micro-nano FBG (Fiber Bragg Grating) is adopted to be a sample cavity. Laser and microwave are utilized for controlling NV-center electronic energy level and magnetic field metering is realized through detecting the fluorescent intensity of the NV-center. The device provided by the invention has comparatively high spatial resolution and comparatively good stability and also has advantages of being small in size, low in cost and being compatible to room temperature operation. The device can perform metering on the surface of a to-be-meter object or in micro holes or gaps and is a magnetic field metering device based on solid atom spin. The device can be used for satisfying requirements for weak magnetic field metering with low cost and high spatial resolution in different field in the future.

The invention belongs to the technical field of cross nanofiber preparation, and relates to a method for preparing a cross nanofiber P-N heterojunction array. The method includes the steps of firstly, depositing a layer of P type or N type nanofiber array with the controllable fiber number and the controllable interval on a collector of a three-dimensional adjustable low-voltage near-field in-situ electrostatic spinning device; secondly, rotating the collector by a certain angle; thirdly, depositing a layer of N type or P type orderly-arrayed nanofiber array through the three-dimensional adjustable low-voltage near-field in-situ electrostatic spinning device, and obtaining the cross nanofiber P-N heterojunction array on the collector. The method is simple, scientific and reliable in theory, high in efficiency, accurate in accuracy control, beneficial to large-scale production and environmentally friendly.

The invention relates to the technical field of cell isolated culture, in particular to an isolated culture method for culturing fibroblasts. The invention provides an isolated culture method for culturing skin-origin fibroblasts, comprising the steps of 1) acquiring fibroblasts from human skin tissues by means of two-step enzyme digestion; 2) culturing the fibroblasts by using DMEM and F12 media and adding epidermal growth factor EGF and/or bFGF (basic fibroblast growth factor), wherein a ratio of DMEM medium to F12 medium is 1:1. By using the DMEM/F12 (1:1) medium, it is possible to effectively promote the proliferation of fibroblasts, maintain original cell form of the fibroblasts and increase early collagen expression of the cells; EGF and bFGF are capable of promoting the proliferation of fibroblasts and increasing collagen secretion.

The invention discloses a positioning method and a device of a multimode GNSS system, a storage medium and a receiver. The positioning method comprises the following steps: measuring a pseudo-range observation quantity based on the received satellite signal, and calculating a receiver clock difference of each positioning system in the multimode GNSS system; using the receiver clock difference of each positioning system to calculate the inter-system time delay between each positioning system during the measurement when the receiver clock difference of each positioning system is reliable; usingthe inter-system time delay as an observation quantity and combining the pseudo-range observation quantity to detect and exclude the abnormal satellite when the inter-system time delay is stable; andusing the pseudo-range observation quantity of the remaining satellites after excluding the abnormal satellite to obtain the position information of the receiver . According to the positioning methodof the multimode GNSS system, the positioning accuracy of the receiver can be improved in a severe environment.

The invention discloses an extreme low-power high voltage switch board wireless temperature measurement transmitting-receiving sub-node system. The system is composed of a contact temperature sensor, a transmitting-receiving chip, two AA batteries and a control center. The control center employs a one-chip microcomputer MSP 430, and at normal time, the control center is in a sleep mode, and when the setting time arrives, the control center is transferred to a working mode. In the working mode, the control center completes instruction receiving, temperature data reading, data transmitting-receiving and communication protocol parsing and other functions. The contact temperature sensor completes the temperature transition function. The used transmitting-receiving chip is a LTP5901-IPM, which is based on a 6LoWPAN protocol, and the communication frequency range is 2.4, and the chip completes wireless data transmitting-receiving, self-organizing net, automatic sleeping, automatic route and automatic waking up and other functions with extreme low-power. After employing the technical scheme discloses in the invention, two AA batteries are used, thereby guarantying the normal working time can last for 80 months, and the best level is 24 months in the industry at present.

The invention provides a brake glide quantity soft measuring method and a measuring device. According to the invention, at the weight hanging part of a crane, a data acquisition is arranged to acquire the acceleration velocity data and the angular velocity data of the weight hanging system, and transmits the data to a host computer where the data are calculated according to a non-linear dynamic differential equation for the weight hanging system built on the Lagrangian equation to obtain the brake glide quantity of the crane. Compared with the currently available system, all the measuring method needs to do is introduce a data acquisition device at the weight hanging part of the crane, free of the mechanical and circuit modifications to the crane loads and the brake controller. With the method and the device, it is possible to automatically measure the brake glide quantity of a crane, and the measuring accuracy is increased, ensuring the safe operations of the crane. In addition, the power consumption of the measuring system is planned, and the repetitive battery replacement becomes unnecessary; and at the same time, the wireless manner can be selected for data transmission, making the transmission not limited to distances. Therefore, with the method and the device, it is possible to estimate the brake performances of the crane in real time.

The invention relates to an orderly charging control method of plug-in electric vehicles in an active distribution network. The method is used for preventing generation of overload, undervoltage and overvoltage of a circuit or a transformer and further reducing power generation cost and controlling the degree of voltage imbalance by formulating an intelligent charging decision of batteries of theplug-in electric vehicles. Orderly charging is performed at selected single-phase nodes, and according to the current reactive electricity price, reactive injection is provided to improve the voltagequality. Compared with the prior art, the orderly charging control method has the advantages of reducing voltage fluctuations and network imbalance degrees and the like.

The invention relates to a long term evolution (LTE) based multicast single frequency network, which is characterized on that on the basis of the maximum transmission time delay difference of a base station or the effective base station proportion, a single frequency network with the obviously reduced transmission performance because of too large regions is split into a plurality of sub single frequency networks for reducing the interference among signs in the single frequency network, and the integral transmission performance of the single frequency network is ensured. The large number of the split sub single frequency networks indicates the requirement of more frequency spectrum resources, so when the single frequency network is split, the number of the split sub single frequency networks is possibly reduced on the premise of ensuring the transmission performance, the reasonable eclecticism between the sub single frequency network number and the multicast transmission performance is realized for using possibly fewer sub single frequency networks as the cost, and the coverage rate and the throughput of the single frequency network are improved.

The invention discloses a method for extracting fish genome DNA, relates to a method for extracting genome DNA, and solves the problems of high workload and long time during extraction by a conventional common fish PCR reaction template. The method comprises the following steps of: 1, preparing acquired fish samples; 2, extracting the fish genome DNA; and 3, performing PCR amplification. The method can be used for extracting the fish genome DNA.

The present invention provides a drilling rod, a drill and a drilling tool thereof. In the drilling rod, a mounting unit (2) which protrudes frontwards and extends along the first axial line is provided. The mounting unit is provided with a parallel male thread portion having a constant minimum distance from the first axial line at a section perpendicular to the first axis line and a male thread cut portion connected to the rear end side of the parallel male thread portion and having a minimal distance that enlarges, furthermore, the mounting unit is formed to that the minimal distance does not reduce from the front end side to the back end side. The rear end of the male thread cut portion is disposed on a plane where the distance from the first axial lien gradual enlarges from the parallel male thread portion towards the rear end side.

The application provides a method and apparatus to simulate an unconventional oil-gas forming process. The method comprises: increasing the temperature of a hydrocarbon source rock sample, placed in ageologic model cylinder of a simulating device, gradually to a target temperature via N stages, and increasing the pressure, which the top of the hydrocarbon source rock sample bears, gradually fromthe normal pressure to the target pressure via N stages, wherein in the different temperature rise and pressure rise stages, different hydrocarbon source rock samples are placed in the geologic modelcylinder and have the same properties; acquiring hydrocarbon forming parameters, which are used for evaluating the hydrocarbon forming process, corresponding to each temperature rise and pressure risestage. The method and apparatus provided herein provide better accuracy for the simulation results of the unconventional oil-gas forming process.

The invention discloses a square battery fixing structure and a using method thereof. The fixing device comprises a first fixing piece and a second fixing piece which are arranged in a split mode. Thesecond fixing piece is a sheet metal part; the first fixing piece is an aluminum alloy piece; the first fixing piece comprises a fixing part and a battery matching part; the shape of the battery matching part is matched with that of the bottom of the mounting structure of the battery module; the battery matching part is fixedly connected with the battery module through a long fixing piece, a viahole is formed in the fixing part, a fixing hole corresponding to the via hole is formed in one surface, far away from the first fixing piece, of the second fixing piece, a short fixing piece is arranged on the first fixing piece, and the short fixing piece penetrates through the via hole and is tightly matched with the fixing hole. The structure is simple, light in weight, low in cost, easy to universalize, capable of effectively absorbing tolerance caused by forming and welding of sheet metal parts and meeting the precision requirement of battery module installation, and high in assembly flexibility.

The invention provides a compound fungicide capable of fermenting straws into fertilizer and a preparation method thereof. The method uses various different categories of microorganisms (bacteria, actinomycetes and fungus) for compounding by aiming at a problem that lignin in the straw is difficult to be applied. The obtained microorganisms are stable and reliable, fermentation fungicides for straw fermentation can be quickly decomposed, and straws are fermented to obtain biofertilizer. The straws are processed, environment is protected, the biofertilizer with high humic acid and organic matter content and conforms to harmless index requirements is obtained, and wastes are made profitable so as to kill two birds with one stone. The preparation method is characterized in that different categories of microorganisms are cultured by different culture media and fermentation methods and are mixed, the ratio of various microorganisms can be guaranteed to be balanced while the number of viablebacteria is guaranteed, and a situation of small quantity since a certain microorganism has weak ability of struggling for existence can be avoided.

The invention is applicable to the technical field of medical treatment and experimental operation, provides a slide combination for animal cell experiments, and aims at solving the problems of wasteand inefficiency of dyeing and rinsing in animal cell experiments, wherein the slide combination includes slides, an improved six-hole plate and a toothed clamp. The slide combination is characterizedin that each slide main body is cylindrical, the center of each slide main body is provided with a circular truncated cone groove, and the side wall is in an oblique direction from an external lowerpart to an internal upper part; four symbols are in equidistant distribution around each groove and comprise three '+' symbols and one 'P' symbol. The symmetrical parts at both ends of each slide areprovided with thickened semicircular protrusions. The toothed clamp consists of clamp arms, a spring, a central shaft and toothed protrusions. A plate body of the improved six-hole plate is a hollow cuboid, a vertical partition plate arranged in the middle of the plate body is used for separating the plate body into a left side region and a right side region, and horizontal baffle plates are arranged between plate walls and the vertical partition plate and are internally provided with 12 fan-shaped slide clamp slots which can accommodate 6 slides at the same time. The slide combination can beused in cell culture of various animals, efficient dyeing and rinsing, and subsequent experiments or observations.

The invention discloses a secondary system defect data mining method based on top-k and pso, and the method comprises the following steps: 1, recording the abnormal condition of equipment: in an intelligent station, secondary equipment is equipment which assists primary equipment, the reliability of the secondary equipment affects the performance of a whole power grid, and most of the equipment can achieve an online self-checking function; when equipment is abnormal, data can be uploaded through a station control layer network, meanwhile, the data can be stored in a local database, and the data can be used for mining frequent item sets and association rules after being preprocessed. According to the method, the support degree of each set is recorded through the set data dictionary, and then the confidence is solved by utilizing the pso algorithm and combining the target function formed by the rule number and the average confidence, so the parameter optimization is realized, and the data is not deleted as much as possible while the overall result is ensured to have higher confidence.

Provided is a novel position adjusting structure material stopping block, including a limiting plate and a limiting block. The limiting plate and the limiting block are connected. The limiting block is on the top of the limiting plate. Limiting height of the limiting block is adjustable. The tail end of the limiting plate is provided with a holding space. The size of the holding space changes withadjustment of the limiting plate and the limiting block. The limiting plate is arranged in a material stopping mechanism, and positions of the limiting plate can be adjusted according to the diameterof a brush handle, to ensure the number of the brush handles which enter the material stopping mechanism and ensure use effect of the material stopping mechanism. The material stopping block can satisfy use requirement of different working conditions, and optimizes working efficiency of the material stopping mechanism.

The invention discloses an intelligent coin sorting, counting and variable packaging integrated device. Mixed coins are put in through a mixed coin collection zone and then enter a coin transition zone; an exit of the coin transition zone is in communication with an inlet of a transfer zone, the transfer zone is provided with a conveyor belt, and the conveyor belt is driven by a driver mounted ona side plate; the mixed coins are driven by the conveyor belt to pass through a separation zone to become single-layer and single-column coins and then enter a sorting zone for sorting, the sorted coins enter a counting collection zone, and longitudinal heat sealing is performed at the counting collection zone, and lastly, cutting and packaging are performed through a cutting and packaging zone. The integrated device is advantaged in that the separation, counting and packaging integrated work of the mixed coins can be realized, integrated use of separation, counting and packaging three types of machines existing in the prior art can be avoided, sorting of different types of coins can be realized, and a problem that a traditional coin sorter can only sort only one type of coins but not multiple types of coins is solved.