132results about How to "Save equipment cost" patented technology

The invention relates to a method for preparing a large-scale two-dimensional nanomaterial graphite, comprising the following steps of: plating a nickel film with the thickness of 100-300nm on the surface of monocrystal silicon, and then injecting carbon element into the nickel film by adopting an ion implantation mode; annealing for 15min-1h at a high temperature between 600 DEG C and 1,000 DEG C and a vacuum degree of from (10-5)Pa to 1Pa, and cooling to room temperature so that carbon atoms are separated out from the nickel film and recombined. Therefore, a layer of graphite film (the film thickness depends on various experiment parameters, such as carbon injection content, and the like) can be formed on the surface of the nickel film. When a sample is put into a FeCl3 solution, the nickel film can be corroded, and the graphite film can be separated out and floats on the surface of the liquid; and at the moment, the graphite film can be transferred away from the liquid with any substrate. Therefore, the large-scale graphite film with the size of several centimeters can be prepared.

A charge-discharge two-way power converter for a battery for an electric car adopts the structure that an input port (In) connected with a storage battery and an output port (Out) connected with a grid are mounted outside a main circuit; the main circuit is connected with a control circuit; the main circuit comprises a battery side filter circuit (1), a like-polarity bi-directional DC / DC converter (2), and a high-frequency isolation DC / DC circuit (3), a three-phase three-level circuit (4) and a grid side filter circuit (5) which are sequentially connected; and the control circuit comprises a DSP main controller (6), an MCU auxiliary controller (7) and an LCD or 485 communication circuit (8). According to the invention, the circuit adopts comparatively less elements, the intelligent degree is high, self detection and fault protection functions are provided, the equipment and operation costs are saved, the conversion efficiency is high, the working process is quick, stable, and controllable, the size is small, the dynamic property is good, and the purposes of environmental protection and energy conservation are achieved.

The invention relates to a method for judging the failure properties of shielding failure and counterattack of a transmission line. In the method, a computer is adopted to collect and process data; and for a certain lightning tripping failure of the transmission line, a lightning protection simulation analysis program is adopted and the collected and processed data is applied by the analysis of the computer to perform simulation reduction and comparison analysis on a circuit-failing tower with the lightning tripping to obtain a judgment result based on the data of the transmission line provided by a running unit, circuit tripping failure data and the lightning activity information of a line corridor obtained by the query of a lightning positioning system. The method comprises the following basic steps of: (1) performing collection and clearing-up on the data of the transmission line and the circuit tripping failure data by adopting the computer; (2) querying the lightning activity information in the corridor of the failing tower by utilizing the lightning positioning system; (3) analyzing the lightning protection performance of the failing tower by the computer by utilizing the lightning protection simulation analysis program; and (4) checking the lightning protection performance and judging the failure property. The method is simple, convenient and easy to operate and convenient to popularize and apply, and ensures low cost.

The invention relates to the field of computer image processing technology, and particularly to a crop seed counting method. The method mainly comprises the steps of performing preprocessing on a seed image; performing graying, binaryzation and seed picture boundary information reinforcement according to a Canny method on the seed image; classifying communicating domains in the image by means of a morphological characteristic and an area characteristic, wherein a first kind is divided seeds, and a second kind is adhered seeds; performing cutting on the adhered seeds according a recessed point characteristic; and finally finding out the number and positions of the communicating domains of the seeds after separation. The crop seed counting method overcomes the defects such as low seed counting speed and low efficiency in traditional seed breeding. Furthermore image processing technology is successively applied on the seed breeding field. Through verification on five kinds of crop seeds, the identification rate is above 99%. The processing time on a common PC is lower than three seconds, and therefore high speed and high accuracy in seed counting are realized. Furthermore a powerful technical support is supplied for seed counting in seed breeding.

The invention discloses a pre-oxidation furnace, which comprises a furnace frame on which a furnace body is fixed; the inside of the furnace body is fixed with horizontally arranged clapboards which divide a furnace retort in the furnace body into a plurality of layers of mutually independent furnace chambers; a front end face and a rear end face which are opposite on each layer of furnace chamberare respectively provided with a yarn inlet and a yarn outlet; opposite side walls of each layer of the furnace chamber are provided with an air inlet and an air outlet; the pre-oxidation furnace comprises a fan; and an air outlet of the fan is communicated with the air inlet of each layer of the furnace chamber through an air intake system, while an air inlet is communicated with the air outletof each layer of the furnace chamber through an air outlet system. The pre-oxidation furnace has simple structure, and solves the problems of the prior pre-oxidation equipment in aspects of temperature uniformity, an oxygen content control system and a spontaneous precursor combustion phenomenon, and an effective space of a hearth is fully utilized, so equipment and production cost is saved, and the economic production of carbon fibers is feasible.

An electrochemistry hydrogen pump dual reactor for organic matter dehydrogenation and hydrogenation coupling is characterized in that the low electrochemistry window of organic matter is used to complete an anode dehydrogenation reaction under low voltage, the generated catalyst in-situ hydrogen is supplied to and used by cathode hydrogenation, the dehydrogenation and hydrogenation reactions occur in the same reactor at the same time, and the high-temperature and high-pressure operations of a conventional heterogeneous reactor are avoided; meanwhile, a proton-exchange membrane is used to effectively prevent the mixing of cathode and anode reactants, and mutual influence of the cathode and anode reactions is avoided. The electrochemistry hydrogen pump dual reactor has the advantages that normal-pressure hydrogenation is realized, direct hydrogen supply is used, the reaction flow is simplified, and cost is saved; the organic matter with the low electrochemistry window is used to avoid the high-temperature reaction and the high-voltage operation.

The invention discloses a catalyst for preparing light aromatic hydrocarbon by synthetic gas one-step process, and a preparation method and an application thereof. The catalyst comprises a Fischer-Tropsch synthesis catalyst and an aromatization catalyst, wherein the Fischer-Tropsch synthesis catalyst includes an oxide of Fe and an oxide of Mn, and a composite metal oxide can fully improve the high-temperature Fischer-Tropsch synthesis activity; the aromatization catalyst is a modified molecular sieve with HZSM-5 as a carrier and with Mo and Ni double metals as active components, and the aromatization performance can be significantly improved. Through the combination of the two catalysts, series coupling of a Fischer-Tropsch synthesis reaction and an aromatization reaction is achieved, a one-way conversion rate of CO is increased obviously, and at the same time, a technology route for preparing light aromatic hydrocarbon-benzene, toluene and xylene (BTX) by synthetic gas one-step process is exploited. Experiments verify that the conversion rate of CO reaches up to 98% or more, the selectivity of hydrocarbonyl of aromatic hydrocarbon reaches 73% or more, and the selectivity of hydrocarbyl of BTX reaches 53%. The catalyst for preparing aromatic hydrocarbon by the synthetic gas one-step process has the advantages of relatively good catalytic activity, good stability and simple preparation, and has relatively good industrial application prospects.

The invention discloses a method and system for cyclic utilization of materials during production of polycrystalline silicon. The method comprises the steps of (1) performing reduction reaction on trichlorosilane and hydrogen to obtain polycrystalline silicon and reduction tail gas; (2) performing dust removal treatment on the reduction tail gas to obtain reduction tail gas subjected to dust removal; (3) performing compression cooling treatment on the reduction tail gas subjected to dust removal so as to separate first chlorosilane and compressed gas from the reduction tail gas; (4) performing distillation and purification on first chlorosilane to obtain residual liquid, trichlorosilane, dichlorosilane and silicon tetrachloride; (5) returning trichlorosilane obtained in the step (4) to the step (1) to perform reduction reaction, and performing hydrogenation reaction between one part of silicon tetrachloride and silicon powder and hydrogen so as to obtain second chlorosilane; (6) performing reverse disproportionation reaction between one part of silicon tetrachloride and dichlorosilane so as to obtain third chlorosilane; (7) returning second chlorosilane and third chlorosilane to the step (4) to perform distillation and purification.

A modularized composite crystal preparation system comprises a furnace frame, a furnace chamber, a crystal growth temperature field module, a rotary lifting and weighing unit and a lifting mechanism.The furnace chamber is arranged on the furnace frame, the front side of the furnace chamber is provided with a front door, the lateral side of the furnace chamber is provided with a light-permeable window, the crystal growth temperature field module is arranged in the furnace chamber, the rotary lifting and weighing unit is arranged on the upper portion of the furnace chamber, the lower portion ofthe rotary lifting and weighing unit is connected with a lifting rod, and the crystal growth temperature field module is one of a micro-pulling-down module, a lifting module and a laser base heatingmodule. The system is a multi-purpose system, a body portion is universal to different crystal growth methods, convenience in replacement of the crystal growth temperature field module is achieved, crystal growth in different methods is realized, different types of functional crystals can be prepared, exploratory development of universities and scientific research institutions on multiple varieties of crystals can be met, and growth demands of small-batch crystals in industrial production can be met.

The invention discloses a formula and a preparation method of substrate-free low temperature reactive hot melt adhesive tape. The adhesive tape consists of substrate-free dry glue and a double-sided release film or double-sided release paper; the glue is prepared from 100-150 parts of thermoplastic polyurethane, 50-150 parts of rosin glyceride, 1-40 parts of a blocked crosslinking agent, 1-10 parts of a wetting leveling agent, 1-10 parts of a defoaming agent, 1-10 parts of a rheological agent, 0.1-5 parts of an anti-aging agent and 100-400 parts of a mixed solvent of ketones and esters; the substrate-free low temperature reactive hot melt adhesive tape is prepared by coating a substrate with the glue, drying, winding, and cutting. By designing the deblocking temperature of the crosslinkingagent and the softening point of the resin, the adhesive tape can be stored and transported at room temperature, and can realize a bonding strength of 2-3 N / mm<2> at a lower heating temperature (90-110 DEG C) and a lower pressure (1-2 bar). Therefore, the substrate-free low temperature reactive hot melt adhesive tape can solve the problems that the existing low-temperature hot melt adhesive is low in bonding strength, and the low-temperature reactive hot-melt adhesive requires special storage and transportation conditions; the substrate-free low temperature reactive hot melt adhesive tape cangreatly reduce the raw material storage and transportation costs of the electronic device manufacturer, and meets the bonding requirements for small parts of the current electronic products.

The invention belongs to the technical field of metal particle processing equipment, and particularly relates to particle logistics grinding equipment, which comprises a feeding mechanism, a fluidifying mechanism, a stirring mechanism, a screen mesh and a collecting bin. The fluidifying mechanism comprises a fluidifying bin; the fluidifying bin is connected with the feeding mechanism, can hold rawmaterials transferred by the feeding mechanism, and enables the raw materials to fluidify to a fluidifying state; the stirring mechanism comprises a stirring paddle; the stirring paddle is located inthe fluidifying bin and can shape raw material particles; the screen mesh is in a cylindrical shape and is located in the fluidifying bin; on the outer side of the stirring paddle, the upper end of the screen mesh is in seal connection with a top plate of the fluidifying bin, and the lower end of the screen mesh is in seal connection with the stirring mechanism; and the collecting bin is locatedunder the fluidifying bin and is connected with the fluidifying bin. By adopting the scheme, the prepared raw materials have uniform particle diameters, the performance is stable, and the accuracy ofa follow-up experiment result is ensured. In addition, the time and the labor are saved, and the experiment efficiency is improved.

The present invention discloses a large circulation garbage percolate treatment process with a characteristic of adaptability. The process is characterized in that the following improvements are performed based on the conventional garbage percolate treatment process, wherein the improvements comprise that: an ultra-filtration effluent reflux system is added, and comprises four parts such as reflux of ultra-filtration effluent to an adjustment tank, reflux of ultra-filtration effluent to an anaerobic tank, reflux of ultra-filtration effluent to a denitrification tank and reflux of ultra-filtration effluent to a nitrification tank, two parts such as reflux of ultra-filtration concentration sludge to the anaerobic tank and reflux of ultra-filtration concentration sludge to the adjustment tank are added, a pipeline transcending system is added so as to perform direct transcendence entering of the percolate raw liquid into the denitrification tank, and a fuzzy control system is additionally arranged. The process has the following beneficial effects that: self-circulations of various process segments in the system in the large range are flexibly regulated so as to effectively reduce impact on the system due to substantial organic load fluctuation, ensure long time stable operation of the system, and achieve an adaptability function of the garbage percolate treatment process; and structure sizes of various reactors can be properly reduced, capital construction investment and operating cost can be saved, foams in the nitrification tank can be effectively eliminated, and other effects are provided.

The invention discloses a beidou third-generation satellite signal simulation system and an analog signal generation method. Real-time information interaction between an upper computer and an FPGA iscompleted through an RS232 serial port, the upper computer sends data defined by a user to the FPGA, and meanwhile, the FPGA transmits the information stored by the FPGA back to the upper computer fordisplaying. Real-time information interaction between the FPGA and a DSP is completed through an EMIF address line, when interrupt arrives, the DSP transmits calculated various parameters to the FPGA, and meanwhile, the FPGA transmits stored specific data back to the DSP for checking. Then, a generated signal is transmitted by the FPGA to an up-conversion module after passing through a DA conversion module, and finally is emitted by a transmitting antenna or a radio-frequency cable out. A program module sharing method is adopted, and a baseband board completes processing of baseband signals in a DSP + FPGA combination mode, so that the research and development period is effectively shortened, the hardware cost of a simulator is reduced, and the test environment is convenient to construct.

The invention discloses a function node test system and belongs to the technical field of whole vehicle network testing. The function node test system comprises an instruction device, a control device and a test module set. The instruction device is used for issuing a control instruction; the control device is connected with the instruction device and used for forming a corresponding control loop according to the control instruction; the test module set is connected with the instruction device and further connected to a function node to be tested through the control device; the test module set includes a plurality of test modules, and is used for being connected or disconnected with the function node to be tested according to the control loop and executing corresponding test movement according to the control instruction; test results are uploaded to the control device by the test modules. By the adoption of the technical scheme, the function node test system has the advantages that different devices suitable for different test environments are integrated so as to achieve an overall performance test of the preset function node, and therefore equipment cost and human resource cost are reduced.

The invention discloses inflation and detection equipment for basketball production for sports, and specifically relates to the field of sports equipment production equipment. The equipment comprisesa lead screw transmission mechanism, a positioning mechanism, an inflation mechanism and a manipulation box; the positioning mechanism is arranged on one side of the lead screw transmission mechanism,the inflation mechanism is arranged on one side of the positioning mechanism, and the manipulation box is fixedly arranged at the top of the inflation mechanism; the lead screw transmission mechanismcomprises a lead screw and sliding blocks movably arranged at the top and the bottom of the lead screw; and the positioning mechanism comprises two semi-sphere positioning covers which are fixedly connected with the sliding blocks through a bracket. The inflation degree of the basketball and whether the concave-convex surface exists on the surface can be detected or not through a thin-film pressure sensor, thereby avoiding the condition that the basketball is over inflated or insufficiently inflated and detecting whether the surface of the basketball conforms to the standard or not, the function is diversified and practical, and the detection time, cost and equipment cost required by the basketball appearance detection equipment are saved.

The invention discloses an antibacterial PP spun-bonded non-woven fabric and a preparation method thereof. The antibacterial PP spun-bonded non-woven fabric is prepared from the following raw materials in parts by weight of 55 to 65 parts of polypropylene, 30 to 37 parts of an ethylene-methyl methacrylate copolymer, 16 to 20 parts of polyethylene glycol monomethyl ether, 2 to 4 parts of maleic anhydride grafted polypropylene, 3 to 4.2 parts of large-aperture hollow silicon dioxide nanoparticles, 2.6 to 3.2 parts of nano silver-loaded titanium dioxide and 5 to 8 parts of a filler. The antibacterial PP spun-bonded non-woven fabric disclosed by the invention is good and lasting in antibacterial effect, high in air permeability, large in moisture-absorbing constant, high in water absorption rate, good in moisture-absorbing and air-permeable performance, good in skin-friendly performance and high in use comfort level; and in addition, the antibacterial PP spun-bonded non-woven fabric is high in breaking strength, good in mechanical property, good in durability, excellent in comprehensive performance index, good in comprehensive use performance and wide in market application prospect.

The invention discloses a modular multifunctional gas turbine test bench, which at least comprises a gear box, a compressor installation station, a turbine installation station and a combustion chamber. The gear box includes at least one high speed shaft and at least one low speed shaft; one end of the high speed shaft is used for connecting a jiggering motor and the other end is connected with atesting compressor; the low speed shaft is used for connecting a starting power source or driving power source or load. The compressor installation station is used for installing a testing compressorand is provided with an intake system and an intake chamber. The turbine installation station is used for installing a turbine and is provided with an exhaust cylinder, an exhaust chamber and an exhaust system. The combustion chamber is provided with a flange interface for connecting a nausea board flange or a combustion assembly and at least includes a flame tube and a fuel nozzle. Therefore, thecompressor test, the whole machine no-load test, the whole machine full-load test, and the subsequent test power station operation test are carried out by the same test bench.

The invention is applicable to the field of express delivery and provides a freight note distributing method, a device and a system therefor; the method comprises the following steps: receiving freight note information, acquiring customer information corresponding to the freight note, distributing the freight note to a designated mail receiver in a mail receiving group according to the customer information corresponding to the freight note and storing the corresponding relation between the customer and the mail receiving group, or distributing the freight note to a corresponding mail receiver according to the pre-stored corresponding relation between the customer and the mail receiving group. By acquiring the customer information of the freight note, the invention stores the corresponding relation between the customer and the mail receiving group after distributing the new freight note, or matches the received customer information of the freight note with the pre-stored corresponding relation between the customer and the mail receiving group to directly acquire the mail receiving group information corresponding to the freight note and distributes the freight note according to the matched mail receiving group information, thus realizing the united management of freight notes of plural regions, ensuring the management is simple, saving mass manual cost and equipment cost, and vastly enhancing the working efficiency and customer satisfaction.

The invention discloses a gas discharge experiment instrument, which is characterized by comprising an adjustable voltage source, a vacuum pump, a set of experiment vacuum tubes fixedly arranged on a bracket and a multipass connector arranged in a vacuum-pumping circuit, wherein electrodes at two ends of the vacuum tubes are arranged at a voltage output end of the adjustable voltage source in parallel; a main interface of the multipass connector is communicated with a vacuum-pumping port of the vacuum pump so as to form a vacuum-pumping main channel, and branch interfaces of the multipass connector are communicated with vacuum-pumping ports of the vacuum tubes in a one-to-one correspondence mode through corrugated tubes so as to form vacuum-pumping branch channels; and the set of the experiment vacuum tubes are vacuum tubes of the same type or of different types selected according to settings. According to the invention, a plurality of vacuum tubes are arranged on the same experiment device, the selected vacuum tubes are different in electrode materials, or electrode shapes or different types of discharge gas, and different gas discharge experiments are carried out continuously, thereby greatly saving the experiment field and the equipment cost.

The invention discloses an aerogenerator current transformer and a control method thereof. The aerogenerator current transformer comprises a grid-connected contactor, a precharge circuit, a current transformer, a network-side reactor and a machine-side reactor. The precharge circuit comprises a precharge contactor and a current-limiting resistor, and the current transformer comprises a network-side current transformer, a DC bus and a machine-side current transformer. The inlet wire end of the grid-connected contactor is connected with a power network, the other end of the grid-connected contactor is divided into two wiring ends, one wiring end is connected with the stator side of a generator, and the other wiring end is connected with the network-side current transformer through the network-side reactor. The network-side current transformer and the machine-side current transformer share the DC bus, and the machine-side current transformer is connected with the rotor side of the generator through the machine-side reactor. The precharge circuit draws power from the power network, passes through the precharge contactor and then is connected with the DC bus through the current-limiting resistor. According to the invention, through optimizing a blower fan whole-machine system main circuit topology structure, under the condition that the blower fan performance is not affected, switch devices are reduced, and the equipment cost and the labor cost are decreased.

The invention discloses a catalytic system coupled with an ATP regeneration system and application of the catalytic system in glutathione production. The application includes: building heterogenous expression / genome integrated Escherichia coli containing glutathione synthesis difunctional enzyme and ATP regeneration enzyme, performing glutathione synthesis reaction condition and catalytic system optimization, and using the mixed culture of the two kinds of Escherichia coli and strain proportion and catalytic reaction process optimization to achieve glutathione production, and raw material, equipment and synthesize reaction costs are saved to the maximum extent.

The invention discloses a slip glaze and a preparation method of domestic ceramic with the same. The slip glaze comprises the following raw materials by weight: 25-32 parts of red clay, 6-9 parts of red loam, 18-22 parts of feldspar, 20-26 parts of quartz, 2.5-3.5 parts of niobium disilicide, 3-5 parts of nano silicon dioxide, 1.5-2 parts of nano boron nitride, 5-8 parts of nano zinc oxide, 1.7-2.4 parts of nano magnesium oxide and 5-7 parts of calcium hydroxyphosphate. The slip glaze disclosed by the invention is used for domestic ceramics, and is low in cost, high in yield and energy-saving;the wear resistance of the prepared domestic ceramic is far better than that of common slip glaze domestic ceramics, and the wear resistance is good; the glossiness is much higher than that of commonslip glaze domestic ceramics; the thermal shock resistance is obviously superior to that of common slip glaze domestic ceramics, and the thermal shock resistance is good; and the glaze surface is bright, smooth and bright in color.

The invention provides a preparation method of a tiglic aldehyde derivative. The preparation method comprises the following step of carrying out catalytic oxidation on an isoamylene derivative represented as the following formula (I) in the presence of a catalyst to produce the tiglic aldehyde derivative represented as the following formula (II), wherein the catalyst is a non-metal oxide, and theR in the formula (I) or the formula (II) is selected from aliphatic hydrocarbyl, aryl, aralkyl, halogens, ester groups, acyloxy, acylamino or alkoxy. The preparation method of the tiglic aldehyde derivative provided by the invention has the characteristics of few reaction step, simple process, cheap and easily available raw materials and the like.

The invention discloses a short-process integral device and a method for preparing continuous tungsten core SiC fibers by a direct-current heating method, and belongs to the technical field of preparation of SiC fibers. Firstly, a tungsten wire penetrates through an integral reactor specifically designed; and the reactor is mainly divided into three sections: the front end is a tungsten wire cleaning end section; the middle is a SiC deposition section; and the tail end is a coating deposition section. The tungsten wire is heated by a direct-current power supply; the concentration field and temperature field distribution suitable for SiC deposition stable growth can be obtained through adjusting the flow, the flowing speed and the ratio of reaction gas introduced in each section, so that the fine grain structure of the SiC fibers is guaranteed, and the high-performance SiC fibers are prepared. The method has the following advantages: the tungsten wire cleaning, the SiC deposition and the coating preparation are integrated; the space can be largely saved; the process is shortened; the production efficiency is improved; and the cost is reduced.

The invention discloses an antibacterial non-woven fabric and a manufacturing process thereof. The antibacterial non-woven fabric is prepared from composite fibers through a spunlace non-woven fabricproduction process; the composite fibers have a skin-core structure and comprises a core layer and a skin layer; the cross section outline of the core layer is regular pentagon, the skin layer wraps the outer surface of the core layer, and the cross section outline of the skin layer is circular; the cross section area ratio of the core layer to the skin layer is 1: (0.28-0.35); and the core layeris prepared from the following raw materials in parts by weight: 95-100 parts of polyethylene terephthalate, 2-5 parts of hydroxyl-terminated polysiloxane emulsion, 2-3.5 parts of pentaerythritol adipate and 10-15 parts of filler. The antibacterial non-woven fabric is excellent in antibacterial performance and good in antibacterial effect; the fracture strength is high, and the mechanical propertyis good; and furthermore, the antibacterial non-woven fabric has good elasticity and softness.

The invention discloses a method and system for hydrothermal treatment of concentrated sludge, and relates to the technical field of environmental protection. The method for hydrothermal treatment ofthe concentrated sludge includes the steps: collecting the concentrated sludge, filtering after first-stage pre-heating with released steam, followed by, taking the steam as a cold source medium, carrying out heat exchange with a heat exchanger, carrying out second-stage pre-heating, and carrying out a hydrothermal reaction; and after hydrothermal treatment, recovering the released hydrothermal steam as a first-stage pre-heating heat source, recovering a liquid material as a heat source medium, cooling through the heat exchanger, and carrying out collection treatment. The system is cooperatively used with the method. The concentrated sludge is filtered and is subjected to hydrothermal reaction after second-stage pre-heating, pre-dehydration is avoided and the processing procedures are saved; waste heat of high-temperature materials after hydrothermal reaction is fully used, energy is saved and the hydrothermal reaction efficiency is improved; the method and system are especially applied to small-scale concentrated sludge treatment; the system has the advantages of simple structure, small occupation area, and equipment and operation cost saving, and is especially suitable for small-scale sewage treatment enterprises with used land shortage.

The invention discloses a composite culture medium for lactobacillus ferment and preparing method thereof. The culture medium contains 8-70% of licorice root filtered juice. In the culture medium, adding 7-25 g polypeptone in per 1000 ml licorice root filtered juice, also can add 2.0-5.0 g liver infusion. The selected 3 kinds of lactobacillus growing well in the culture medium has better effect than traditional lactobacillus selected culture medium-MRS culture medium. The formula of this culture medium is simple and needs simple preparing method, culture condition is easily controlled, low cost, safety and harmless, can be used widely for researching, developing and producing one of the most important probiotics-lactobacillus.

The invention discloses a high-whiteness and high-water-absorption non-woven fabric. The high-whiteness and high-water-absorption non-woven fabric is prepared from viscose fibers, cotton fibers and superfine polyester fibers through a spunlace process, specifically, the high-whiteness and high-water-absorption non-woven fabric is prepared from the following raw materials in parts by weight: 75-85parts of viscose fibers, 18-22 parts of cotton fibers and 7-9 parts of superfine polyester fibers. The viscose fibers are prepared from the following raw materials in parts by weight: 90-95 parts of wood pulp meal, 4-6 parts of titanium dioxide and 5-7 parts of silica gel; the superfine polyester fibers are nine-hole cotton; and the nine-hole cotton is prepared from the following raw materials inparts by weight: 85-95 parts of polyethylene glycol terephthalate, 9-13 parts of sodium polyacrylate water-absorbent resin and 6-8 parts of calcium carbonate. The high-whiteness and high-water-absorption non-woven fabric disclosed by the invention is degradable and has good environmental friendliness; the high-whiteness and high-water-absorption non-woven fabric has high whiteness and good color and luster and is deeply loved by consumers; and the product has good water absorption (moisture absorption) performance, good water absorption effect and other comprehensive performance, and has widemarket application prospects.

The invention discloses a skin-friendly low-permeability ES composite short fiber for a hot-air non-woven fabric surface layer. The ES composite short fiber has a skin-core structure and consists of acore layer and a skin layer, wherein the core layer comprises the following raw materials in parts by weight: 85-90 parts of polypropylene, 5-9 parts of ethylene propylene copolymer, 14-18 parts of acrylic acid-acrylamide super absorbent resin and 6-11 parts of inulin; and the skin layer comprises the following raw materials in parts by weight: 80-85 parts of polyethylene, 10-15 parts of methyl methacrylate grafted modified polyethylene, 8-12 parts of ethylene propylene copolymer, 4-7 parts of polyvinyl alcohol, 7-15 parts of superfine pearl powder and 12-17 parts of sodium polyacrylate superabsorbent resin. The skin-friendly low-permeability ES composite short fiber for the hot air non-woven fabric surface layer has the advantages of skin-friendly property, moisture absorption, breathability, elasticity, no irritation to skin, sanitation, antibiosis and the like; and the amount of reverse osmosis after water absorption is small, and the skin-friendly low-permeability ES composite short fiber belongs to the low reverse osmosis type.