160results about How to "Guaranteed singularity" patented technology

The embodiment of the invention discloses a commodity anti-counterfeiting method and a device. The method comprises the following steps of generating the public key and the private key of a commodity; storing the hash values of the serial number, the public key and the private key of the commodity and the circulation data of the commodity in a common database by using a block chain; upon receiving the verification information of the public key of the commodity and determining the stored state of the public key in the common database, determining the first legal sales state of the commodity according to the serial number and the circulation data of the commodity, and marking the state of the commodity to be sold out; upon receiving the verification information of the secret key of the commodity and determining the stored state of the public key corresponding to the secret key in the common database, determining the first legal verification state of the commodity according to the serial number and the circulation data of the commodity, and marking the state of the commodity to be verified. Through preparing the public key and the private key of the commodity into special two-dimension codes and pasting the special two-dimension codes onto the outer package and the surface of the commodity, the readability, the verifiability and the binding performance of anti-counterfeiting marks are ensured. Meanwhile, by means of the block chain, the commodity circulation traceability and the commodity source uniqueness are ensured. At the same time, the cost is reduced.

The invention discloses a mechanical shock deicing device for an overhead ground wire and a using method thereof. One end of a piston rod in a deicing mechanism is connected with an icebreaking head, while the other end passes through an end cover to connect a piston head in a piston cylinder; the end cover is fixed on the upper end face of the piston cylinder; a pulling rope ring is arranged on the upper end face of the piston cylinder; the piston rod in the piston cylinder is sleeved with a spring; the lower end face of the piston cylinder is communicated with a piston cavity in a connecting body; the connecting body is connected with a trigger mechanism; the connecting body is provided with a tail rope ring close to the piston cylinder; and a clamping mechanism is at least two limit rods fixed on the upper part of the icebreaking head. When the mechanical shock deicing device is used, the limit rods clamp the overhead ground wire or an OPGW optical cable, a pulling rope and a tail rope are pulled to make the piston rod vertical to the overhead ground wire or the OPGW optical cable, and the trigger mechanism is started to shock for deicing. The device and the using method have the advantages of firm clamping, strong controllability, concentrated deicing force, and good deicing effect.

The invention discloses a method for preparing a high-purity ultrahigh-temperature ceramic target material which belongs to the technical field of ceramic target materials, and in particular provides a method for preparing high-purity zirconium / hafnium boride powder and a ceramic target material thereof. The method comprises the steps of taking high-purity Zr powder, Hf powder and high-purity B powder as raw materials, adopting a self-propagating method to prepare high-purity ZrB2 and HfB2 powder respectively and then adopting a high-temperature high-pressure hot-pressing molding process to prepare a high-purity dense zirconium / hafnium boride ultrahigh-temperature ceramic target material, wherein the relative density of the target material reaches 95 to 99 percent. Relative to the prior art, metal powder in the method is slightly excessive when the materials are mixed, so as to make up for the metal loss during self-propagating reaction and further guarantee the component unicity of products. Relative to pressureless sintering, the sintering temperature needed in the method is greatly lowered; in addition, as the hot-pressing process adopts two-stage temperature, blank is uniform in temperature field, so as to ensure that the target material with uniform density can be obtained in the late hot-pressing process.

The invention discloses a differential conveying security check system which comprises a security check machine and a power conveying device. The power conveying device is in butt joint with the inlet of a belt conveyor. The power conveying device and the belt conveyor are located on the same horizontal plane and identical in conveying direction. The conveying linear speed of the power conveying device is smaller than that of the belt conveyor. Luggage parcels are conveyed to the belt conveyor through the power conveying device. The belt conveyor quickly increases the distances between the adjacent luggage parcels. The differential conveying security check system can quickly increase the distances between the luggage parcels which are compactly stacked in the prior art, and the luggage parcels enter a detector as a queue at certain intervals one by one, so that the defect that in the conveying process of an existing security check machine, luggage parcels are stacked is overcome, image uniformity of luggage parcels which pass through the security check machine each time is guaranteed, the check leakage phenomenon is effectively avoided, and the abnormal luggage parcels can be conveniently checked.

The invention provides a method for evaluating the rice planthopper-resistant property of rice. The method includes the steps that: (1) a nylon net greenhouse is constructed; (2) rice varieties, which include a rice variety to be tested, a pest-resistant check variety and a pest-susceptible variety, are planted in the greenhouse; and the pest-susceptible variety is planted around each variety to serve as rice planthopper-inducing rows; (3) the dosage of nitrogenous fertilizer is 200kg / ha to 250kg / ha; (4) at the early tillering stage of all the varieties, 2.5 percent of deltamethrin emulsifiable concentrate or 20 percent of triazophos emulsifiable concentrate is used for killing all pests and natural enemies in the net; (5) 10 days after the step 4, adult rice planthoppers are put on the pest-susceptible check variety (TN1) planted around the rice variety to be tested, 5 to 10 pairs per clump, and are freely and naturally propagated and randomly transferred to the variety to be tested; (6) after the step 5, when all of the pest-susceptible check variety in the test field dies, the resistance of each variety is evaluated, wherein the rice variety to be tested has high resistance when the death rate of the rice variety to be tested is less than 10 percent, pest resistance when the death rate is 11 percent to 30 percent, medium resistance when the death rate is 31 percent to 50 percent, medium susceptibility when the death rate is 51 percent to 70 percent, and pest susceptibility when the death rate is higher than 70 percent. The method has the advantages of simplicity and high operability, and accords with production reality.

The invention belongs to the technical field of crystal growth, and particularly relates to a growing method for inhibiting a defect of a carbon inclusion in a silicon carbide single crystal. The method provided by the invention comprises growth at two stages; different pressures are controlled to inhibit volatilization and dissipation of a silicon component, so that the formation of the inclusion is reduced or even eliminated. According to the growing method provided by the invention, the inhibition of the formation of the carbon inclusion can be realized through adjusting a simple growing process without the need for adding foreign matters in a growing raw material, and the growing method is easy to implement and lower in cost.

The invention relates to a high-efficiency synthesis method of TALE (transcription activator like effectors) repeated segments. The high-efficiency synthesis method includes designing DNA (deoxyribonucleic acid) template and a primer for PCR (polymerase chain reaction) amplification, utilizing uracil-specific excision reagent (USER) to manufacture adhesive tail ends at two ends of the DNA segments by the uracil DNA excision method, connecting a plurality of DNA segments of a single, two or three TALE repeated units with carriers according to correct sequence to obtain recombinant carriers of TALE proteins capable of expressing specific target genes, and completing knockout, knock-in, overexpression and suppression expression of the target genes by means of the recombinant carriers. The high-efficiency synthesis method is timesaving, convenient, high in correctness and capable of realizing high throughput and meeting automatic requirements.

The invention discloses an interactive electronic dance coaching system, which comprises a teaching double screen, a floor, dance shoes, an infrared receiver, a projector, a central processing unit, an action capturing device and a camera, wherein both the infrared receiver and the projector are connected with the central processing unit, the input end of the infrared receiver is connected to the motion capturing device, the floor comprises a fiber reinforced plastic load-bearing body and a capacitor plate body arranged at the inner side of the fiber reinforced plastic load-bearing body, the bottom of a body tip of the dance shoes is provided with an emitter, the teaching double screen comprises a demonstration screen and a feedback screen, the central processing unit is connected to a gravity sensor, the demonstration screen is electrically connected to the central processing unit, and the central processing unit is electrically connected to an action comparing device and a voice error correcting device. The interactive electronic dance coaching system can replace a human coach, can display and evaluate action accomplishment conditions objectively in real time, carries out correction in time, effectively improves the training efficiency and dancing skills of a dancer, and improves the learning efficiency and the acquisition precision.

The invention relates to a method for testing and evaluating antifriction abrasion resistance of lubricating oil by utilizing a friction test machine. The method comprises the following steps of arranging a lubricating oil sample into an oil storage box so as to enable a rotating friction wheel to be in surface contact with a fixed friction wheel under the condition that the rotating friction wheel is immersed in the lubricating oil sample, thus producing the slide friction; measuring the temperature of the lubricating oil sample by utilizing a temperature sensor at a plurality of preset discrete time points; measuring power supply current of a motor by utilizing a current measuring device; calculating and displaying friction resistance (f) by utilizing a friction resistance calculating and displaying unit, wherein the calculation formula is as follows: f=UI / rc, wherein f is the friction resistance, U is the power supply voltage, I is the power supply current, r is the rotation speed of the rotating friction wheel, and c is the perimeter of the rotating friction wheel; evaluating and / or comparing the antifriction abrasion resistance of the lubricating oil sample according to the measured temperature, current and friction resistance.

The invention provides a low time jitter fiber femtosecond laser based on narrowband spectrum filtering, uses the intracavity narrowband spectrum filtering process to effectively stabilize the spectrum components of the pulse in the intracavity evolution process, thus obviously suppressing the pulse center wavelength drift, and greatly eliminating the time jitter components coupled by the intracavity dispersion of the center wavelength drift. The pulse with mass chirps passes the narrowband spectrum filter, the time domain width and spectrum width can be reduced in the same time, thus keepingthe average width of the pulse in a ytterbium-doped single-mode fiber to be at a low state, and limiting the pulse time jitter components directly coupled in the time domain at a low level. The femtosecond laser does not need to repeatedly optimize the intracavity pour dispersion measure and the mode locked state, thus realizing low time jitter operation under different pour dispersion conditions;the femtosecond laser is simple in structure, easy to operate, good in repeatability and long-term stability, thus obtaining a practical low time jitter ultrashort pulse sequence.

The invention provides highly dispersed water soluble acrylic resin which is mainly used for water-based systems such as water-based ink. The invention adopts a continuous method for bulk polymerization and has chemical reactions in the chemical environment of high temperature and high pressure. On one hand, the manufacturing process by the continuous method effectively inhibits the gel effect in the bulk polymerization, thereby ensuring the unicity of the distribution of the molecular weight of the resin; on the other hand, the high-temperature high-pressure chemical reaction conditions facilitate the strict control on the size of the molecular weight, thereby preparing the water soluble acrylic resin with the weight-average molecular weight of between 6, 000 and 9, 000, and the distribution index of the molecular weight less than or equal to 2. The resin prepared according to the method is applicable to the water-based ink which meets the requirements of high mesh wire, high accuracy and environmental protection on water-based ink with high solid content, high color content, low viscosity and high drying rate.

The invention discloses netilmicin sulfate lyophiled powder injection and a preparation method of the netilmicin sulfate lyophiled powder injection. Netilmicin sulfate and additives are added with water to be prepared into netilmicin sulfate injectable suspension, and the netilmicin sulfate lyophiled powder injection is obtained through freeze drying, wherein the additives are inclusion moleculesand pH conditioning agents, the inclusion molecules are selected from bletilla striata polysaccharide, beta-cyclodextrin, urea, thiourea, beta-cyclodextrin derivatives, deoxycholic acid and starch, and the pH conditioning agents are selected from sodium carbonate, sodium bicarbonate, ammonia water, sulfuric acid and phosphoric acid. Required auxiliary materials are few, the preparation process issimple, the freeze drying process is particularly screened and optimized, and the netilmicin sulfate lyophiled powder injection and the preparation method has the characteristics that the stability is high, the biological availability is high, the production cost is low, the quality is safe and reliable, and the like.

The invention provides a multi-stage electronic file record generating and checking method, which comprises the following steps that A, a current record template used for generating the current stage of the electronic file record is determined, and the record template records the record attribute contents to be signed in the current time; B, record attribute contents in the selected record template in the current time are added into a record attribute region of the electronic file record; the current record template is signed, and the generated current record signature is added to a record signature region; C, the record attribute contents of each time recorded in the record attribute region of the electronic file record are subjected to integral signature, and the generated current integral signature is used for updating the generated integral signature generated by the last time of electronic file record recorded in the record signature region. Correspondingly, the invention also provides a multi-stage electronic file record verification method. Through the multi-stage record attribute, so that the electronic file adopts different bodies for ensuring the evidence performance by aiming at different metadata information in different stages.

The invention relates to a multi-burner OVD (outside vapour deposition) preparation device of soot optical fiber preforms. The device comprises a deposition box, an optical fiber preform deposition bracket, burners, an air supply box and an air suction pipe; the device is characterized by also comprising an air suction box, a filter screen and a suction / diffusion laminar-flow plate; the suction / diffusion laminar-flow plate is provided with multiple vent holes; the deposition box below the optical fiber preform deposition bracket is provided with a rectangular air inlet communicated with the air supply box; the air suction box is arranged above the deposition box, and the deposition box above the optical fiber preform deposition bracket is provided with a rectangular air suction hole communicated with the air suction box; the suction / diffusion laminar-flow plate is arranged in the air suction box, and the upside of the air suction box is communicated with the air suction pipe; and the filter screen is arranged at each of an air supply hole and the air inlet. The device disclosed by the invention has the advantages of high deposition rate and high efficiency.

The invention discloses an intelligent sports dance footstep learning device which comprises a floor, dancing shoes and a teaching double-screen. The floor comprises a glass steel bearing body and a capacitor plate body arranged on the inner side of the glass steel bearing body, each dancing shoe comprises a shoe body, an emission head arranged at the bottom of the tiptoe of the shoe body and a controller which is arranged on the inner side of the shoe body and connected with the emission head and a battery, the teaching double-screen comprises a demonstration screen and a feedback screen, the capacitor plate body is connected with the feedback screen through a processing circuit, and a feedback screen controller is connected with a storage and the feedback screen. According to the intelligent sports dance footstep learning device, footstep curves of a learner can be sent to the feedback screen to be displayed, the curves on the feedback screen are compared with those in teaching video, the defect of footsteps is corrected, and relearning is conducted. Meanwhile, due to the fact that zone scanning is adopted, electricity can be saved, the unicity of collected signals can be guaranteed, and the leaning efficiency and the collection precision can be improved.

The invention relates to an environmental protection type nonwoven needle punched carpet and a manufacturing method thereof. The nonwoven needle punched carpet consists of at least two fiber materials with different fusion points. Base cloth is prepared by nonwoven needle punching; and the base cloth is prepared into the carpet through a forming step of preheating compression. Particularly, in the whole production process, besides the fiber materials, no chemical additives are added and no water treatment is required; and therefore the materials of the nonwoven needle punched carpet keep unicity for easy reclamation and regeneration of raw materials. Regarding the raw materials, the material consumption, the finished product, and each link of the production process, the method not only reduces the production cost, improves the production efficiency and realizes higher economic benefits, but also completely reaches the requirements of environmental protection.

The invention discloses a cutting method of a female suit pants prototype. The cutting method sequentially comprises the following steps of: step 1, measuring the outside length, the waistline, the hipline, the crotch depth and the hip thickness of a human body; step 2, determining the total crotch width of the female suit pants prototype, wherein the total crotch width is equal to [(hip thickness * 0.44) + 6.34] cm; step 3, determining the front crotch width and the rear crotch width of the female suit pants prototype, wherein the front crotch width is equal to [(total crotch width * 1 / 3) + 0.5] cm, and the rear crotch width is equal to [(total crotch width * 2 / 3) - 0.5] cm; step 4, determining a cutting curve of a pair of female suit pants; and step 5, cutting and sewing according to the cutting curve, wherein 'cm' is adopted as a measure unit for length values of the outside length, the waistline, the hipline, the crotch depth and the hip thickness. According to the cutting method disclosed by the invention, a structure relation and a motion relation between the crotch width and the human body of the pair of female suit pants can be accurately presented, and the cutting efficiency of the pair of female suit pants can be effectively increased.

The invention discloses a fluid damping device used for coping with pipeline pressure jump. The fluid damping device comprises a box body. The box body is in a shape like a rotation body, wherein an ovoid curve rotates around the axis by a cycle to form the rotation body; and the two ends of the box body are coaxially provided with an outlet, an inlet and a connecting device for connecting an upstream gas pipeline with a downstream gas pipeline. Multiple groove pipes pointing to the outlet are evenly distributed on the inner wall, close to the outlet, of the box body in a spaced manner in a peripheral direction. The radian of the groove pipes is consistent with that of the inner wall of the box body. A plastic ball is smooth in surface and is movably placed in an inner cavity of the box body. The diameter of the plastic ball is larger than the diameter of the upstream gas pipeline and the diameter of the downstream gas pipeline. By changing the circulation area and the local resistance coefficient, the response time of downstream pressure jump is prolonged, the purpose that pressure is adjusted slowly is achieved, the structure and the principle are simple and clear, the fluid damping device is easy to mount and maintain, sensitive to response and fast in adjustment, the influence of upstream pressure jump on downstream pipeline instruments and equipment is relieved, the operating cost of enterprises is lowered, and safe and stable operation of the pipelines is guaranteed.

The invention discloses a joint of a cable support pentagonal and hexagonal grid single-layer reticulated shell and an installation and construction method for the single-layer reticulated shell. The joint comprises a bottom plate, a cover plate, a middle circular tube and an internal Y-shaped stiffening rib. The internal Y-shaped stiffening rib is adopted when necessary, and the cover plate is formed by cutting a circular plate and welded to the middle circular tube. Circular holes are formed in the corresponding positions where the middle circular tube is connected with inhaul cable so that inhaul cable ends with threads can penetrate into the joint from outside to inside, the inhaul cables are screwed up through nuts inside the joint, and prestressing force is applied to the inhaul cables. The installation and construction method for the single-layer reticulated shell constructed on the basis of the joint is carried out according to the following steps that components, rod pieces and the inhaul cables of a joint body are machined and manufactured in a factory firstly, then the joint body and the machined reticulated shell rod pieces are constructed and installed, the inhaul cables are installed, the nuts are tightened up, prestressing force is applied to the inhaul cables, and finally the cover plate and the middle circular tube are welded together. The joint of the form has the advantages of being reasonable in stress, simple in structure, convenient to machine, construct and install and the like.

The invention relates to a multidirectional seepage test device for a bituminous mixture, in particular to a constant-head multidirectional seepage test device for the bituminous mixture, aims to overcome the defect that the bituminous mixture seepage meter in the prior art cannot realize constant pressure of high head and cannot test lateral seepage of water flow on a bituminous pavement under the action of actual vehicle load and also aims to solve the problem that pure lateral seepage tests and pure vertical seepage tests as well as lateral-vertical coupled seepage tests of water flow on the bituminous pavement are difficult to realize. The multidirectional seepage test device comprises a seepage mechanism lower cavity, a seepage mechanism upper cavity and lower cavity connecting piece,a seepage mechanism upper cavity, a seepage water outlet, a cut-off valve, a measuring cylinder, a connecting sleeve, an end sleeve, a water tank connecting pipe, a constant head supplementing watertank, a constant-pressure drain pipe and a water supplementing pipe. The invention belongs to the field of road and bridge engineering.

The invention discloses a control method for an electronic photo frame and a related device. A cloud platform of the electronic photo frame performs verification on account information of a mobile terminal after receiving an operation request on the electronic photo frame which is transmitted by a mobile terminal through an Internet protocol address of the electronic photo frame, allows the mobile terminal to perform a corresponding operation on the electronic photo frame through the Internet protocol address of the electronic photo frame after verifying that account information is prestored and is bound with the Internet protocol address of the electronic photo frame, otherwise, bans the mobile terminal from performing a corresponding operation on the electronic photo through the internet protocol address of the electronic photo frame. Through a mode of binding the mobile terminal with the Internet protocol address of the electronic photo frame on the electronic photo frame cloud platform , the control method for the electronic photo frame and the related device can guarantee that only the mobile terminal that passes the identity authentication can control the electronic photo frame, guarantee the unity of the electronic photo frame control, prevent the illegal users from performing any operations on the electronic photo frame and can improve the display safety of the electronic photo frame.

The invention discloses a system used for environmental simulation for laboratory animals. The system comprises at least one individually ventilated cage (IVC), IVC equipment and gas blending equipment, wherein the at least one IVC is used for raising the laboratory animals; the IVC equipment is used for feeding gas into the at least one IVC and discharging exhaust gas in the at least one IVC; theIVC equipment includes a cage air supplying passage, a supplied air filtering system, a cage air exhaust passage and an exhaust air filtering system; the gas blending equipment includes a mixing device and a plurality of gas conveying pipelines; the multiple gas conveying pipelines are used for conveying different gas; a gas outlet end of each gas conveying pipeline is connected with a gas inletend of the mixing device; and a gas outlet end of the mixing device is connected with the IVC equipment. The system can conduct long-term exposed environmental simulation experiments on the laboratoryanimals in a clean facility.

The invention discloses a Bacillus velezensis strain and application thereof. The Fb strain is obtained by enrichment culture, primary screening, secondary screening and the like, belongs to the Bacillus velezensis and is gram-positive. The strain is characterized in that: the strain is rod-shaped, 0.4-0.6 microns * 0.9-4.0 microns, and is arranged singly or in pairs; and spores are nearly circular, near-end and cyst is expanded. Through detection, the Bacillus velezensis Fb can resist high temperature of 55 DEG C, the optimal growth temperature is 45 DEG C, and the optimal growth pH value is3.0-7.6. The strain can efficiently degrade tea residues, improve the protein, amino acid and the like of the tea residues and reduce the moisture, cellulose and the like of the tea residues, and thefermented tea residues can be used as a feed raw material; and the strain can realize smokeless, odorless and sewage-free discharge and can realize the cyclic utilization of organic wastes so as to reduce the pollution of the tea residues to the environment, and is a technology which accords with the environmental protection.

The invention discloses a coal particle gas diffusion attenuation characteristic measurement method and a device thereof, which are suitable for coal gas content measurement. A control variable device, a constant temperature experiment device and a data collection device are included. Prepared and well-weighed coal particles are placed in a disc-shaped coal sample tank of the constant temperatureexperiment device; vacuum pumping is carried out under a constant temperature condition, the air tightness of the device is checked, a certain amount of gas is supplied to the coal sample tank and adsorption equilibrium is carried out; through the data collected by a pressure sensor of the data collection device, the volume of the gas in the coal sample tank diffused to a gas collection tank is obtained, a dead space gas volume in the coal sample tank is subtracted, the variation law of a gas diffusion amount in coal particles along with time is obtained, and the evolution law of a gas diffusion rate and a diffusion coefficient during a full coal particle exposure process along with the time is further obtained. A basis is provided for coal bed gas content determination, the outburst prediction accuracy is further improved, and a fast and economical calculation tool is also provided for sustainable development and the like of coal bed gas resources.

The invention relates to the technical field of cell culture, and in particular to a method for expanding human cord blood hematopoietic stem cells (CB-HSC) by using own umbilical cord mesenchymal stem cells (UCMSC) as stromal cells. The invention provides a method for massively expanding CB-HSCs in vitro, which is characterized in that the own UCMSCs are used as stromal cells to be co-cultured with CB-HSCs, the growth microenvironment of CB-HSCs in vivo is simulated. This method can be used for effectively expanding CB-HSCs, and moreover the expanded cells overcome the defects of easy injury, disintegration and the like of a cytokine amplification method.

The invention discloses a three-dimensional image segmentation method based on a subjective threshold value and a three-dimensional label technology. Based on a subjective threshold segmentation method and a three-dimensional point diffusion label technology, the offset and false detection missing detection generated in a three-dimensional image in a traditional two-dimensional segmentation methodare solved, the connection between the two-dimensional images is well reserved, and the problem generated by image registration is avoided; A window adjusting function is added to preprocess the image, the contrast ratio and the brightness of the separated target area are adjusted, the gray value difference between the target area and redundant image information is increased, the threshold segmentation accuracy is remarkably improved, unnecessary information is removed in time through a three-dimensional label technology, and the integrity and the unity of the segmented image are guaranteed.Compared with a traditional two-dimensional segmentation technology, a reasonable threshold value can be found more effectively, three-dimensional areas of organs can be separated more conveniently and quickly, a good foundation is provided for later three-dimensional reconstruction, and the method is generally suitable for various organs of a human body of CT pictures with different image qualities.

The invention discloses a server side topological data conversion method which includes preliminarily defining a topological data conversion model, including defining a null topological data set and various data conversion methods, and setting the mapping rule of the various topological data; acquiring the original topological data according to the practical topological service logic and packaging and loading the original topological data into a topological data set; assigning the topological data set to the empty topological data set in the conversion model and acquiring the data conversion method identical to the type of a foreground in the conversion model; conducting data conversion for topological data in the topological data set of the conversion model according to the acquired data conversion method identical to the type of the foreground and the topological data mapping rule of the type. The server side topological data conversion method is simple and convenient to operate and avoids repeated data conversion development aiming at different types of foregrounds. The invention further discloses a server side topological data conversion device.

The invention discloses a bionic high-quality integrated degumming method of A. venetum L. fiber. The bionic high-quality integrated degumming method comprises screening of alkali-resistant bacteria, and degumming of A. venetum L. fiber. According to the step of screening of the alkali-resistant bacteria, soil bacteria obtained from orchards are subjected to plate streaking separation; separated bacteria are subjected to preliminary screening with A. venetum L. fiber powder; bacteria strains obtained via preliminary screening are subjected to repeated mutagenesis, secondary screening, and subcultring with an alkaline medium so as to obtain the alkali-resistant bacteria; an A. venetum L. bast fiber alkaline fermentation broth containing additional carbon resources is inoculated with the alkali-resistant bacteria, and then fermentation is carried out; after fermentation, the A. venetum L. bast fiber is subjected to further composite processing, acid modulation, and water washing so as to obtain A. venetum L. fiber. According to the bionic high-quality integrated degumming method, the advantages of physical, chemical, and biological processing are adopted; bionic theory is adopted; the clean high-efficiency integrated degumming method is established; the obtained A. venetum L. fiber is tidy, is excellent in spinnability, and possesses antibacterial activity; and anti-ultraviolet properties are maintained preferably.

The invention particularly discloses a novel ultraviolet lamp tube. The novel ultraviolet lamp tube comprises an outer cylinder, an inner cylinder is coaxially arranged in the outer cylinder; an outer electrode is embedded in the outer cylinder; an inner electrode is arranged in the inner cylinder; the outer surface of the inner electrode is coated with a clutter coating film; the outer side wall of the outer cylinder is plated with a single wave band coating film. The clutter coating film is plated on the outer surface of the electrode, and the single wave band coating film is plated on the outer side wall of the outer cylinder; filtering is carried out in the film coating mode, the unicity of light emitting of a light source can be guaranteed; the size of the ultraviolet lamp tube can be greatly reduced through the film coating mode; the ultraviolet lamp tube can be arranged to be cylindrical, so that the light emitting angle of the ultraviolet lamp tube is effectively increased, and the lighting effect of the ultraviolet lamp tube is effectively improved.