63results about How to "Solve key technical issues" patented technology

The invention provides a satellite-ground cooperative in-orbit real-time geometric positioning method and system for optical satellites. The method comprises the following steps: an optical satellite imaging and positioning model suitable for an onboard real-time processing unit is constructed, initial values of onboard positioning model parameters are acquired by calibration parameters or design parameters for camera interior and platform installation relation by a ground laboratory, after the satellite is in orbit, ground calibration field image data is acquired and downloaded, calibration matching and calibration parameter calculation are completed in a ground processing system by using the downloaded calibration field images; calibration results are verified and model parameter annotation is updated. The method and the system aim at limitation of onboard processing environment, and combine the ground processing system, so that a satellite-ground cooperative processing mode is formed, in-orbit high-precision real-time geometric positioning of optical remote sensing satellite is realized, application usefulness and timeliness of earth observation systems are improved, and necessary bases are provided for intelligent and high-efficient remote sensing data onboard real-time processing technology.

The invention relates to a hatching device and method for demersal spawns of marine fishes. The hatching device comprises a net cage, a water channel, a bracket, a temperature controller indicator, a probe, a heating rod, a water inlet hose, a sinker, an air inlet hose, an air stone and an annular water injector, wherein the net cage and the bracket are located in the water channel; the net cage is bound on the bracket; the water inlet hose and the air inlet hose are located in the water channel outside the net cage; the upside of the net cage is provided with the annular water injector; and the probe and the heating rod are arranged in the water channel. The hatching method comprises the following steps of: controlling a hatching condition; hatching; carrying out microscopic examination observation; carrying out secondary water temperature controlling; managing routinely; collecting larva fish and the like. The hatching method has the advantages that spawn deposition is avoided because of conical point inflation; spawns adhered on net cage edges are washed at any time by the annular water injector; the net cage is conveniently replaced; the water temperature is stably controlled by an electric temperature controller; and the fresh water quality can be ensured due to water feeding and drainage modes of water feeding of the annular water injector at the upside and water feeding of the water channel at the bottom and overflowing of the periphery of the water channel. Therefore, by means of the hatching device and method, a hatching rate of the demersal spawns of the marine fishes in the industrial fry breeding is improved.

The utility model discloses a meat duck drought breeding method. The method comprises the following steps: selecting meat duck variety: selecting arcane white star ducks for drought breeding, wherein the arcane white star ducks have the advantages of quick growth speed, short growth period and low material-meat ratio under the drought breeding condition; breeding infant ducks: detecting the maternal antibody condition of the infant ducks, and conducting the immunization of avian influenza vaccine according to the maternal antibody condition, selecting and mating the feed and releasing densityof the infant ducks; breeding meat ducks: selecting and mating the feed and the releasing density of the meat ducks; and arranging the captive breeding environment: conducting the captive breeding onthe arcane white star ducks in a net duck breeding house in a dry land until the ducks can be slaughtered. In the invention, the heat stress of the drought breeding meat ducks is solved firstly, the variety selecting, breeding mode, breeding method, breeding environment regulating and the epidemic prevention of the meat ducks are taken as the key problems for tackling, a comprehensive method is concluded for solving the key technical problem that the traditional water breeding mode is changed to be duck breeding on dry land in southern China is solved, and the obvious economic, social and ecological benefits are obtained.

The invention relates to an SDAP layer function implementation method of a 5G system, and belongs to the technical field of communication. According to the method, in an SDAP layer, a multi-case modeis used for designing, a PDU session identifier is used for identifying an SDAP case number; each SDAP entity completes management on mapping between DRB corresponding to the independent PDU session identifiers and QoS stream identifiers; and a 5GSM module manages building and deleting work of the SDAP cases. According to the SDAP module designed by the method, the non-access layer of the 5G terminal has clearer structure, and the code maintenance and upgrade of the SDAP layer in the 5G are facilitated.

The invention discloses a device for measuring the surface local electronic state of a material. The device comprises a sample stage, a direct-current signal generator, an alternating-current signal generator, an adjustable-wavelength monochromatic light source and a metal film-coated probe, wherein the sample stage is conductive; the probe is arranged on the surface of the sample stage, and is kept a certain distance away from the sample stage to accommodate a sample to be measured; one of the two output ends of the direct-current signal generator and the alternating-current signal generator is connected to the sample stage, and the other output end is connected to the probe; light beams emitted by the adjustable-wavelength monochromatic light source are focused light beams; and the focused light beams can be focused onto the needle point of the probe.

The invention relates to a manufacturing method for an interconnected multilayer circuit board by a copper cylinder method, comprising the following steps: (1) manufacturing an interlayer wiring layer on a substrate; (2) manufacturing a copper cylinder on the interlayer wiring layer; (3) manufacturing an insulating layer; (4) manufacturing another wiring layer on the basis of the copper cylinder and the insulating layer, wherein the step (3) of manufacturing the insulating layer comprises the following concrete steps: a, sequentially carrying out oil removing, acid cleaning, pre-impregnation, brownification and plate baking to a circuit board in the step (2); b, screening resin by silk and solidifying the resin; and c, rubbing down the copper cylinder and the resin. The invention discloses a concrete processing technique for plating the copper cylinder first and then the insulating layer and solves the key technical problem of the prior interconnected multilayer circuit board by the copper cylinder method in the production process. By the invention, more than three orders of HDI circuit boards can be manufactured, such as 4+N+4. The invention has the characteristics of high manufacturing efficiency, short production period and further reduction of the volume and the weight of products.

The invention relates to the field of health food and particularly relates to raw materials of a health preserving white spirit, a dendrobium health preserving white spirit and a manufacturing method thereof. The raw materials of the health preserving liquor are characterized by comprising the following components in parts by weight: 1-3 parts of dendrobium, 1-3 parts of rhizoma polygonatum and 1-2 parts of medlar. According to the invention, three types of medicine food homology plant raw materials are reasonably collated to serve as the raw materials of the health preserving white spirit for developing dendrobium nectar, and the dendrobium health preserving white spirit provided by the invention is higher in market value; and meanwhile, the preparation process disclosed by the invention is a combination of a modern food new technology and the traditional method, a multilevel coupling clarification technology is adopted, and a chemical clarification technology and an ultrafiltration clarification technology are jointly applied to the production of white spirit products, thus the precipitation can be effectively eliminated, the product quality can be ensured and the technical problem existing in the liquor production in the prior art can be better solved.

The invention relates to an on-site transformer protection system used for an intelligent transformer substation. As for the transformer protection, the traditional transformer protection is characterized in that the analog quantity and the switching quantity of sides are introduced into the transformer protection device by a long cable to be concentrated and stored when the analog quantity and the switching quantity of sides of a transformer are required to be acquired. According to the on-site transformer protection system, a main control chamber is omitted, and the on-site transformer protection system can protect on-site devices, utilize communication network techniques, provide a corresponding network data transmission scheme, and artfully solve key technical problems of an on-site installed transformer protection realizing scheme. By virtue of redundant design, the on-site transformer protection system can send out warning information, and meanwhile maintain and protect the normal operation through the self-healing of a network switching technique after communication network faults are identified, so that the problem that the reliable operation of the transformer protection system is influenced by the communication network faults can be solved.

Provided is a semi-rigid water-cooling microwave ablation antenna. The semi-rigid water-cooling microwave ablation antenna comprises a radiation head, a medium tube, a semi-rigid coaxial cable, an outer guide sleeve and a water chamber sleeve, wherein the outer guide sleeve is installed on the tail portion of the medium tube in a sleeved mode, the water chamber sleeve is fixed at the rear end of the outer guide sleeve, the semi-rigid coaxial cable penetrates through an axis hole of the outer guide sleeve, a cavity used for water-and-heat exchange is formed by the outer guide sleeve and the water chamber sleeve, at least three small holes are formed in the end face of the tail portion of the water chamber sleeve, capillary tubes are welded on the end face of the tail portion of the water chamber sleeve, the number of the capillary tubes is equal to the number of the small holes, at least one of the capillary tubes is a cooling water inlet tube, the rest of the capillary tubes are cooling water outlet tubes, and a thermo-plastic tube is used for wrapping the capillary tubes on the periphery of the semi-rigid coaxial cable in an evenly distributed mode. Low-temperature water which flows in a single-direction circulation mode is used for cooling a high-heat structural component at the front end of the semi-rigid water-cooling microwave ablation antenna, heat energy in a microwave ablation area and heat energy, used for microwave transmission, of the semi-rigid coaxial cable are transferred to the outside of a body in time, and therefore the semi-rigid water-cooling microwave ablation antenna is a clinic surgical instrument which can be safely, efficiently and reliably applied to the microwave ablation therapy on cavities, intestinal canals, even blood vessels and the like.

The invention discloses a delay detection calibrating device for an ultrasonic flowmeter, which comprises a water tank, at least one slide rail system, a first ultrasonic probe and a second ultrasonic probe, wherein the water tank has an accommodating space; the slide rail system is positioned in the accommodating space of the water tank; the first ultrasonic probe and the second ultrasonic probe are a pair of ultrasonic probes of the detected flowmeter; the first ultrasonic probe is fixed on a fixed probe clamping mechanism of the slide rail system; and the second ultrasonic probe is fixed on a sliding probe clamping mechanism of the slide rail system. The delay detection calibrating device is characterized in that first data of the flowmeter is acquired at a frist distance position between the first ultrasonic probe and the second ultrasonic probe; second data of the flowmeter is acquired at a second distance position between the first ultrasonic probe and the second ultrasonic probe; and delay calibration data of the ultrasonic flowmeter is obtained by calculation of the first data and the second data. The device can be widely applicable to a universality time measurement accuracy detection device of an ultrasonic flowmeter product and has high measurement accuracy.

The invention relates to a feed supply operation car which comprises a chassis, a carriage and a cab. A vertical feedway is arranged above the tail part to the abdominal part of the bottom of the carriage; the head part of the bottom of the carriage is lower and more indented than the tail part to the abdominal part of the bottom of the carriage; a horizontal feedway is arranged along the direction of the width of the carriage at indentation place; the upper part of the horizontal feedway is bordering on the discharge end of the vertical feedway; the side wall of the carriage corresponding to the end of the horizontal feedway is provided with a discharge hole; a shutter is arranged at the discharge hole; the vertical feedway is a chain type transmission mechanism; the horizontal feedway is a belt type transmission mechanism. The invention provides a maneuverable, fast and efficient animal husbandry mechanical product to the vast countryside of our country, which is a special vehicle designed for the feeding of cows in cow fields, is a good assistant of animal husbandry for realizing mechanized feeding, moreover, the feed supply operation car can carry other animal feed and provide the mechanized feeding for other animals. The feed supply operation car has the advantages of simple structure, light weight, bigger load, stable and convenient loading and unloading process and low production cost.

The invention provides a time difference detecting device of a dual-channel ultrasonic flow meter. The device comprises an ultrasonic flow meter to be detected, a first signal separating module connected with one end of the ultrasonic flow meter to be detected, a second signal separating module connected with the other end of the ultrasonic flow meter to be detected, and a first transducer, a second transducer, a third transducer and a fourth transducer which are located between the first signal separating module and the second signal separating module and arranged in a liquid container, wherein the first transducer and the second transducer are located in a first channel and the third transducer and the fourth transducer are located in a second channel. The detecting device provided by the invention has high universality and is applicable to flow meters of different manufacturers; and the device can realize quantity transmission by tracing to the source of geometric parameters and has high accuracy.

The invention relates to a vacuum freeze-drying production technology of high-activity lactobacillus bacterial powder and an application thereof, and belongs to the technical field of foodstuff. A biological pellicle technology is applied to fermentation production of lactobacillus, water-insoluble meal fiber is used as a solid interface, a pellicle is formed on the solid interface, so that vacuumfreeze-drying survival rate of lactobacillus is substantially improved, vacuum freeze-drying survival rate reaches 90% or above, and living bacteria number of bacterial powder reaches 1x10<11>cfu / g or above. The high-activity lactobacillus bacterial powder with high stress resistance can be applied to solid beverage, starter and other products.

The invention relates to a spray drying production process and application of high-activity bifidobacterium powder, and belongs to the technical field of foods. According to the invention, a biological mycoderm technology is applied to fermentation production of the bifidobacterium, and an insoluble dietary fiber is taken as a solid interface to form a mycoderm on the solid interface, so that thespray drying survival rate of the bifidobacterium can be obviously improved and can reach 55% or more, and the maximum number of viable bacteria in bacterial powder can reach 5*10<10>cfu / g or more. The invention solves the key technical problem in the development of high-activity bifidobacterium spray-dried bacterial powder. The prepared bifidobacterium powder with high activity and strong stressresistance can be used in solid beverage, leavens and other products.

The invention discloses a design method suitable for evaluating large involute template of involute measuring instrument. In the method, a standard theory based involute profile of a large gear is replaced by a curved arc; the principle error of the two-axis arc type large involute template is obtained by calculating the deviation between the arc and the theoretical involute; different sizes of two-axis arc type large involute template are produced by adjusting the detection arc radius rc of a standard block and the center distance O1O2 between the center of a centering axis and the center ofa reference block detection arc. The principle error curve of the two-axis arc type large involute template designed according to the parameters is a double hump curve. When calibrating a measuring instrument with a large gear by using the two-axis arc type large involute template, the measurement result is different from the traditional involute template. The error of the instrument can be represented by error compensation of the obtained result.

The invention belongs to the technical field of air separation, and in particular discloses a method for providing an oxygen rich gas with stable flow and purity for oxygen rich combustion supporting of a. kiln. Conventional membrane separation devices are improved, namely membrane separators are grouped; and a control valve capable of isolating at least one part of membrane area and a set of heat exchanger for compensating the temperature of the inlet gas are installed. By the method, the change or the fluctuation of the flow or the oxygen purity of the oxygen rich air due to the change of the environmental temperature is eliminated or lightened to a range of meeting the oxygen rich combustion supporting requirement; when the running environmental temperature is low, an inlet gas temperature compensation measure is adopted; and when the running environmental temperature is high, stable temperature and flow of raw gas are realized by regulating the flow and isolating a part of membrane area, and the stability of the flow and the purity of the oxygen rich air at the outlet of a separation system is finally ensured. By adopting the simple isolating measure and the method for fully reclaiming the heat energy of the waste gas, the stability of the system is enhanced, and the total efficiency of the system is improved.

The invention discloses an intelligently-controlled sprinkling irrigation device. The problem that in the prior art, agricultural water-saving irrigation intelligentization still needs to be improved is solved. The device comprises a sprinkling irrigation machine frame, a traveling device, a water supply mechanism and a controller, wherein the sprinkling irrigation machine frame is fixedly arranged on the traveling device, the controller is fixedly arranged on the sprinkling irrigation machine frame, and a water spraying mechanism is fixedly arranged on the lower side of the sprinkling irrigation machine frame; the controller comprises a main control module, a humidity sensor, an A / D module, a judgment module, a sprayer electromagnetic valve and a rainfall shutdown control device; the humidity sensor is connected with the judgment module through the A / D module after conversion, an output signal of the rainfall shutdown control device is connected with the judgment module, and an output signal of the judgment module is connected with the sprayer electromagnetic valve. A sprinkling irrigation intelligent control system is used for saving sprinkling irrigation water and liberating manpower in agriculture, is controlled by the single-chip microcomputer controller, and is a product combining the microcomputer technology and the traditional relay contactor control technology.

The invention belongs to the technical field of air separation, and in particular discloses a method for providing an oxidant with stable flow and purity for oxygen rich combustion supporting of kiln. A conventional membrane separation device is improved, wherein the conventional membrane separation device comprises a membrane separator, an air filter, boosting equipment and vacuum equipment; according to the improvement, a first heat exchanger is arranged between the air filter and the boosting equipment, and a second heat exchanger and a related adjusting valve are arranged in back of the vacuum equipment; the first heat exchanger is used for introducing low-grade heat energy and preheating raw air; the second heat exchanger is used for introducing low-grade heat energy and heating permeating gas, wherein the permeating gas serving as the oxidant is fed into the kiln for supporting combustion; and when the flow or the oxygen purity of the oxygen rich air is greatly changed due to the change of the environmental temperature, the change is eliminated or lightened to a range of meeting the oxygen rich combustion supporting requirement by certain operation. By fully using the heat energy of the waste gas, the construction and running costs can be reduced, meanwhile, the stability of the system can be enhanced, and the total efficiency of the system is improved.

The invention discloses a solar air-conditioner, which comprises a solar power supply system and a refrigeration system, wherein the solar power supply system comprises a solar cell panel, a charger and a storage cell; the refrigeration system comprises a refrigeration control circuit and a refrigerator, wherein the refrigerator consists of an indoor unit and an outdoor unit; and the solar cell panel at least comprises a planer photo-thermal cell panel; the photo-thermal cell panel is a sealed chamber encircled by an upper baseplate and a lower baseplate, wherein photovoltaic cells are respectively adhered and fixed on the upper baseplate and the lower baseplate of the sealed chamber through a plurality of adhering points, and the sealed chamber is provided with transparent resin. According to the solar air-conditioner disclosed by the invention, electric energy obtained through solar energy conversion is used for refrigeration, therefore the energy sources can be saved, and the roof heat is reduced.

The invention discloses a Saccharomyces boulardii composite lyoprotectant, and a preparation method and an application method thereof. The preparation method comprises the following steps: dissolvingsodium ascorbate in sterile saline solution, and carrying out filtration sterilization to obtain a solution A; dissolving polyxylose, inulin, fructooligosaccharide, sodium bicarbonate, sodium glutamate and lactose in distilled water, sterilizing the obtained solution, and cooling the sterilized solution to room temperature in order to obtain a solution B; and uniformly mixing the solution A with the solution B to obtain the Saccharomyces boulardii composite lyoprotectant. The application method comprises the following steps: uniformly mixing Saccharomyces boulardii with the Saccharomyces boulardii composite lyoprotectant according to a mass ratio of 1:2, carrying out balancing for 40-60 min, and freezing the obtained mixture in a vacuum lyophilizer to obtain Saccharomyces boulardii powder.The Saccharomyces boulardii composite lyoprotectant is added in the probiotic powder preparation process to lyophilize the Saccharomyces boulardii, so the lyophilized survival rate can reach 80.23-86.26%, the number of living probiotics of the probiotic powder is 1.84-2.13 * 10<10> CFU / g, and the key technical problems in the development process of high-activity Saccharomyces boulardii lyophilized powder are solved.

The invention discloses a method for determining a height correction coefficient of a hardware fitting discharge inception voltage simulation test in an AC line. The method comprises the following steps: respectively carrying out corona tests on different power hardware fittings so as to obtain corona initial voltages of the different power hardware fittings under different ground heights; according to the corona initial voltages of the different power hardware fittings, respectively determining corona initial voltage feature curves of the different power hardware fittings; respectively calculating correction values of the corona initial voltages of the different power hardware fittings under the different ground heights; respectively performing data regression analysis on the correction values of the different power hardware fittings, and respectively obtaining a height correction function, and an initial coefficient ai and an initial exponent coefficient bi which are corresponding to the different power hardware fittings; and respectively taking arithmetic averages of the initial coefficient ai and the initial exponent coefficient bi corresponding to the different power hardware fittings to obtain a coefficient a and an exponent coefficient b, and according to the height correction function, determining the height correction coefficient of power hardware fitting discharge inception voltages.

The invention provides a ginseng ultra-fine powder effervescent tablet. The ginseng ultra-fine powder effervescent tablet of the invention can generate effervescent phenomenon immediately and produce carbon dioxide when the invention is mixed with water, and the solution has the advantages of excellent taste, easy absorption, convenient carry, fast action and so on after the rapid disintegration. The invention is especially applicable to children, elderly people and the people group which can not swallow the solid preparations for usage.

The invention discloses a sampling device and a sampling method for a pond-culture flatfish, and belongs to the field of marine fish culture equipment. The sampling method comprises a funnel-shaped outer net cage, a large funnel net, a small funnel net, a large bamboo circle, a small bamboo circle, a stay bar, an edge line, a float line, a sinker line, a buoy, a buoy rope, a cross rope anchorage, a tail end anchorage, a tail end rope, a tail end anchorage line and a cross rope, wherein the sampling device is paved in a pond during sampling, and is taken in the next day, so that the requirements that regular sampling observation analysis is needed in the bastard halibut culture process and the sample n is greater than or equal to 30 are met; and the fish body is free of injury. The sampling device is low in price, simple in structure, easy to manufacture, and convenient to operate; the number of collected samples is ensured; the injuries to the fish body are reduced or avoided; the sample deviation is relatively small; and the condition of the pond-culture flatfish population can be really reflected.

The invention relates to a method for carrying out cyanide-free cuprous brass electroplating on a steel cord and a method for passivating a brass coating and relates to a method for electroplating brass on the steel cord and a method for passivating the brass coating, aiming at the technical problems of difficult control over coating components, poor bonding force and poor corrosion resistance during the cyanide-free brass electroplating of the steel cord at present. The cyanide-free cuprous brass electroplating of the steel cord comprises the following steps of: preparing a cyanide-free cuprous brass electroplating solution; (2) pretreating the steel cord; (3) carrying out the cyanide-free cuprous brass electroplating on the steel cord. The brass coating with stable components and good bonding force is obtained by carrying out the cyanide-free cuprous brass electroplating on the steel cord. The method for passivating the brass electroplating comprises the following step of soaking the steel cord electroplated with the brass coating into a passivation solution for chemical passivation. The method for carrying out the cyanide-free cuprous brass electroplating on the steel cord and the method for passivating the brass coating can reduce the production cost of the steel cord and can be used for large-scale industrial production of the steel cord.

The invention comprises: a central controller (PLC), whose input end is connected to each sensor and whose output is used to control the electric actuator, used for transmitting the real-time working state to the man-machine interface; a signal collecting and converting system used for measuring and converting the signals outputted from each sensor and transmitting them to the central controller. The electric actuator includes a stepping motor linked with the lock gate of the snow removing vehicle and used for receiving the signal from PLC; the man-machine interaction system includes a touch screen and is connected to the central control; the controlling program containing a control algorithm is saved in the central controller; the spreading amount of the thaw agent is controlled by the height of the lifted gate.

The invention discloses a planting method of selenium-enriched perilla. The planting method includes following steps: (1), preparing selenium-enriched foliage fertilizer; (2), applying the fertilizer;(3), performing foliage spraying. The planting method has the advantages that by adopting a method of foliage spraying of selenium element micro-fertilizer, the key technical problem that perilla isselenium-enriched is solved, selenium content of perilla is increased from about 0.05mg / kg in general to 3.27mg / kg, which is an increase of 65 times when compared with the prior art, and seed yield isincreased by 5.49% when compared with the prior art.

The invention provides a sensor and a sensing ring for a sensor. The sensor comprises sensing ring devices which integrate sensing probes and detection circuits on an outer tube to form an independent unit, wherein the sensing ring can be used for assembling and integration of a soil moisture and temperature measurement sensor and used for detecting moisture or temperature of soil; the sensing ring is applied to the sensor and connected with a data collector, so that information collected by the sensing ring is transmitted to the data collector, and the data collector transmits a signal to a user terminal via a communication port and a data transmission interface for display and inquiry. According to the sensor and the sensing ring for the sensor, the sensor is formed by simply, conveniently and rapidly assembling a plurality of the sensing rings together according to measurement depth.

The invention discloses a preset slurry grouting sleeve for a building, a prefabricated member connecting structure and a prefabricated member connecting method. The preset slurry grouting sleeve for the building comprises a sleeve body, wherein a screw thread connection hole is formed in one end of the sleeve body, the sleeve body is connected with a first reinforcing steel bar in a threaded manner through the screw thread connection hole, a slurry chamber is arranged at the other end of the sleeve body, and extends towards the inside of the sleeve body, a plurality of slurry bags are arranged in the slurry chamber in a sealed manner through sealing sheets, and slurries in the respective slurry bags are mixed with one other uniformly and coagulate to fixedly connect the sleeve body with a second reinforcing steel bar when the plurality of slurry bags are squeezed to crack by a second reinforcing steel bar. The preset slurry grouting sleeve for the building disclosed by the invention has the advantages of increased construction efficiency, reduced cost and capability of producing enormous economic benefits.

The invention discloses a nonlinear correction method for in-situ calibration of a sodium flowmeter based on signal frequency band selection. The nonlinear correction method is used for correcting nonlinear characteristics of a permanent magnet type sodium flowmeter of a large-diameter vortex-free generator in in-situ calibration. The method is based on a physical model of pipeline cross section turbulence distribution, and nonlinear correction is achieved by searching for an area with cross-correlation flow close to standard flow, namely a frequency band with signal frequency band cross-correlation flow close to standard flow. Cross-correlation flow curves of different frequency signals are obtained through phase-frequency characteristics of cross-power spectral density, two different correction frequency bands are selected in a large flow range and a small flow range through FFT digital filtering, and cross-correlation flow is calculated by using signals in the two correction frequency bands when large flow and small flow are carried out. A linear fitting relational expression of the cross-correlation flow and the standard flow is obtained, and correction of nonlinear characteristics is realized.

The invention discloses a vacuum drying production technology of high-activity bifidobacterium bacterium powder and application and belongs to the technical field of foods. According to the vacuum drying production technology, non-water-soluble dietary fibers are used as a solid-phase carrier and fermentation is carried out to produce a bifidobacterium biological film thallus; after the fermentation, bacterium mud is collected and is mixed with a drying protection agent; a mixture is dried in vacuum to prepare the bifidobacterium bacterium powder. According to the method disclosed by the invention, the vacuum drying survival rate of bifidobacterium can reach 50 percent or more at maximum, the viable count of the bacterium powder reach 1 to 5*10<10>cfu / g and the vacuum drying survival rateof the bifidobacterium is improved by 10 or 10 times or more when being compared with that of bifidobacterium with a non-biological-film state. According to the vacuum drying production technology disclosed by the invention, the key common technical problems in a development process of the high-activity bifidobacterium bacterium powder are solved, and the prepared bifidobacterium bacterium powdercan be applied to product forms including a fermentation agent, solid beverage and the like.