52 results about "Blue spot" patented technology

A laser projection system preferably for use in commercial motion picture theaters and other large screen venues, including home theater, uses optical fibers to project modulated laser beams for raster scanning on the screen. The emitting ends of the optical fibers are arranged in an array such that red, green and blue spots are simultaneously scanned onto the screen in multiple lines spaced one or more than one scan line apart. The use of optical fibers for laser beam projection eliminates the need to use complex optics, and enables the scanning of small, high resolution spots on the screen. The use of optical fiber also permits convenient packaging and permits replacement, upgrading or modification of the system components. The scanning of multiple lines simultaneously is accomplished by reordering the video signal with a microprocessor controller component to write lines in a sequence after repeated vertical sweeps to form a complete picture. In a preferred embodiment, the video signal is reordered to scan different color beams at different times to render the desired composite of the red, green and blue spots at each dot location on the screen. Alternate embodiments are disclosed to illustrate the flexibility of the system for different optical fiber output head spacings, and for different types of laser, modulation, and scanning components.

Laser projection system suitable for commercial motion picture theaters and other large screen venues, including home theater, uses optical fibers to project modulated laser beams for simultaneously raster scanning multiple lines on screen. Emitting ends of optical fibers are arranged in an array such that red, green and blue spots are simultaneously scanned onto the screen in multiple lines spaced one or more scan lines apart. Use of optical fibers enables scanning of small, high resolution spots on screen, and permits convenient packaging and replacement, upgrading or modification of system components. Simultaneous raster scanning of multiple lines enables higher resolution, brightness, and frame rates with available economical components. Fiber-based beam coupling may be used to greatly enhance the flexibility of the system. Alternate embodiments illustrate the flexibility of the system for different optical fiber output head configurations and for different types, sizes, and arrangements of laser, modulation, and scanning components.

The invention relates to an ELISpot tuberculosis infection diagnostic kit and the application, which adopts the genetic engineering technology to obtain a CFP10-ESAT6 fusion protein antigen from a mycobacterium tuberculosis by cloning, expression and purification, a tuberculosis specific cell stimulator is used for stimulating the peripheral blood T lymphocyte cell of the detected person to secrete a specific IFN-Gamma, then the invention is detected by ELISpot, and the whole process needs to take two days. The usage of the invention can be used for detecting whether the detected person is infected by mycobacterium tuberculosis by using the naked eye or instrument to determine the result according to the number of the generated purple blue spots, so as to assist the diagnosis of tuberculosis and differential diagnosis.

The invention discloses a complex tang-dynasty jun glaze with blue spots in white and a process for preparing jun porcelain by use of the complex Tang-dynasty jun glaze. The process comprises: firstly crushing and molding carcass raw materials, and firing the carcass raw materials into plain carcass; then, immersing the plain carcass into slurry of glaze in white for glazing; applying slurry of the glaze with blue spots in surface points of the plain carcass after the slurry of the glaze in white adhered on the surface of the plain carcass is dried in air; and putting the plain carcass into a kiln for firing after the slurry of the glaze with blue spots is dried, thereby obtaining the complex Tang-dynasty jun glaze with blue spots in white. According to the Tang-dynasty jun glaze with blue spots in white and the process for preparing jun porcelain by use of the complex Tang-dynasty jun glaze disclosed by the invention, milky white glaze is presented in the process of firing by adding zircon into a formula of the glaze in white; and the position of the glaze with blue spots is fixed by use of a secondary glazing mode. A coloring process of overglaze color or underglaze color adopted by general piebald porcelains is broken through; economic value of the jun porcelain is increased through innovation in glazing color and coating; and the jun porcelain, which is a Chinese characteristic, also represents advanced level of the production process in China, thereby increasing the social value of the jun porcelain.

The invention discloses a complex tang-dynasty jun glaze with blue spots in black and a process for preparing jun porcelain by use of the complex Tang-dynasty jun glaze. The process comprises: firstly crushing and molding carcass raw materials, and firing the carcass raw materials into plain carcass; then, immersing the plain carcass into slurry of glaze in black for glazing; applying slurry of the glaze with blue spots in surface points of the plain carcass after the slurry of the glaze in black adhered on the surface of the plain carcass is dried in air; and putting the plain carcass into a kiln for firing after the slurry of the glaze with blue spots is dried, thereby obtaining the complex Tang-dynasty jun glaze with blue spots in black. According to the Tang-dynasty jun glaze with blue spots in black and the process for preparing jun porcelain by use of the complex Tang-dynasty jun glaze disclosed by the invention, an iron element, a copper element and a cobalt element in special proportion are added into glaze in black, are fired at a high temperature to form black glaze which is stable in color generation, uniform in color and luster and full of a jade texture, and the position of the glaze with blue spots is fixed by use of a secondary glazing mode. A coloring process of overglaze color or underglaze color adopted by general piebald porcelains is broken through; economic value of the jun porcelain is increased through innovation in glazing color and coating; and the jun porcelain, which is a Chinese characteristic, also represents advanced level of the production process in China, thereby increasing the social value of the jun porcelain.

The invention discloses a full-automatic cell non-staining image recognizing and counting method. The full-automatic cell non-staining image recognizing and counting method comprises the following steps of: selecting a full-automatic cell counting meter through an image recognition method, adding a cell suspension to be detected into a counting sheet directly, and inserting the cell suspension to be detected into a counting meter; lowering the receiving capability of a light sensing chip to the light intensity of a red light R and a green light G, intensifying the receiving capability of the light sensing chip to the light intensity of a blue light B, and regulating the aeration time and gain manually so as to change the background of a display to be light blue, and take round hot spots as images of active cells, and take the round blue spots darker than the background color as images of dead cells; and analyzing through cell image recognition software, thereby obtaining accurate large-small cell activity analysis data. According to the full-automatic cell non-staining image recognizing and counting method, dyes are not required to be used for counting cell activities; latent toxicity brought to cells to be detected by trypan blue is prevented; detected cells can continue to live, and the activities of the cells are counted during the culturing process; and meanwhile, according to the full-automatic cell non-staining image recognizing and counting method provided by the invention, non-staining real-time on-line cell counting can be achieved, and the method can be widely applied to the field of life science research.

The invention provides a method for preparing a white LED. The method of preparing the white LED comprises the steps of fixing an LED chip on a substrate arranged in an array; attaching a fluorescent film on the surface of the LED chip; making a mold corresponding to the substrate, arranging a projection corresponding to the size and shape of the surface of LED chip and for covering the surface of the LED chip onto the mold, and filling the mold with white glue slightly lower than the height of the projection; buckling the substrate fixed with the LED chip onto the mold, flipping the mold, and removing the mold after the white glue is formed at the periphery of the LED chip, baked and cured; forming a transparent silicone lens on the surface of the white LED coated with the white glue at the periphery; and cutting the substrate to forming a single white LED. The method avoids the phenomenon of blue light leakage of the white LED by coating the periphery of the LED chip with the white glue through the mold, the operation method is simple, low in cost and high in working efficiency, and the white light emitted by the packaged white LED is uniform and saturated in color, with no yellow or blue spot.

The invention belongs to the medicinal material identifying field and in particular relates to a method for identifying cordyceps sinensis powder through microscopic dyeing. The invention aims to solve the technical problem that the sold pure cordyceps sinensis powder in market is difficult to identify. The technical scheme of the invention used for solving the problem is to provide a method for accurately identifying cordyceps sinensis powder. The method comprises the following steps: taking cordyceps sinensis powder to be detected, dying to prepare smears; placing the prepared smears under a microscope for microscopic observation, and if the special structure of cordyceps sinensis can be clearly observed on each smear without obvious blue spots caused by iodine staining and no obvious plant issue can be observed, judging that the sample is pure cordyceps sinensis powder; and if not, judging that the sample is not pure cordyceps sinensis powder. The method of the invention can be used to clearly identify fine cordyceps sinensis powder prepared for decoction and substances not belonging to cordyceps sinensis, the cost is low, the efficiency is high, method can be not easily interfered by various additives, the accuracy is very high, and the method has good application prospects in the medicinal material identifying field.

The invention relates to a black-base blue-spot compound Jun porcelain glaze material. The compound Jun porcelain glaze material comprises a black-base glaze material and a blue-spot glaze material, wherein the black-base glaze material is prepared from the following raw materials in parts by weight: 5-12 parts of iron sesquioxide, 60-80 parts of silicon dioxide, 8-15 parts of aluminum sesquioxide, 5-10 parts of calcium oxide, 1-2 parts of magnesium oxide, 2-5 parts of potassium oxide and 1-3 parts of sodium oxide. The black-base blue-spot compound Jun porcelain glaze material is very transparent, has third dimension and good liquidity and luster and is unlikely to bubble; and the black-base glaze material has stable color and uniform luster, after a blank is coated with the black-base glaze material, other place on the surface can be coated with the blue-spot glaze material, and the black-base blue-spot Jun porcelain glaze can be sintered with basically consistent pattern. Compared with the prior art, the black-base blue-spot compound Jun porcelain glaze material has the advantages that the great progress is made, the sintered black-base blue-spot compound Jun porcelain glaze has good luster, few cracks and strong mechanical resistance.

The invention provides black-ground and blue-spot composite glazed jun porcelain decorative lighting and a preparation process thereof. The prepared black-ground and blue-spot composite glazed jun porcelain decorative lighting is high in yield and has high artistic value and economic value, and manufacture cost is reduced. Raw materials are not prone to decomposition at high temperature, so that volatilization of a color development material is hindered, stable and pure color development of a black-ground and blue-spot glaze at high temperature is guaranteed, the color is bright, and the glazesurface can be flat and smooth; due to the fact that kaolin has good plasticity and adhesion, breaking risks caused by enlarged cracks during firing are reduced.

A ‘Blue Dot’ stick-on moisture indicator system that includes a stick-on transparent, polypropylene film patch with a sticky, pressure sensitive, hot melt, rubber-resin that applies on one surface, a dimensionally smaller, ‘Blue Dot’ indicator patch and a dimensionally larger, silicon treated, release (peel) liner strip to which a plurality of stick-on film patches with ‘Blue Dot’ indicator patches, are affixed to such that functionally isolates both the moisture sensitive ‘Blue Dot’ (cobalt chloride treated paper) from moisture and the surrounding sticky surface of the stick-on film from debris before the indicator is applied or deployed (adhered) onto a surface.

The invention belongs to the field of gene engineering, and relates to an improved promoter and applications thereof. The nucleic acid sequences between -35 area to -10 area of the promoter region aremutated into recognition sites of endonuclease. The problem that a blue-white selected carrier has a strong promoter, which starts the transcription or translation of an exogenous gene, the product may be toxic to a host, and the cloning cannot be carried out is solved. The defect of false positive cloning caused by gene frame shift mutation due to 1 to 2 bp loss of the cleavage sites of the carrier is overcome. The false negative phenomenon that a plane is fully of blue spots is eliminated, wherein the false negative phenomenon is generated because the exogenous DNA fragment is small, and the gene reading frame is not changed by the insertion of the exogenous DNA.

The invention belongs to the field of crude medicine identification, and particularly relates to a method for identifying cordyceps sinensis through microscopic staining. The invention aims to solve the technical problem that the authenticity of the cordyceps sinensis powder which is circulated and sold in the market is difficult to identify. The technical scheme for solving the problem is to provide the method for accurately identifying the cordyceps sinensis powder. The method comprises the following steps that: the cordyceps sinensis powder to be inspected is taken, stained and produced into a smear; and the produced smear is subjected to microscopic observation under a microscope, if the special structure of the cordyceps sinensis of each smear can be clearly observed, the obvious blue spots under the iodine staining are not existed, and the obvious plant tissues are not observed, the cordyceps sinensis powder can be identified to be pure, otherwise, the cordyceps sinensis powder is not pure. The method can clearly identify the fine medicinal slice powder and the matter which does not belong to the cordyceps sinensis, is low in cost, has high efficiency, is not easy to be disturbed by various addition ingredients, and has very high accuracy and a good application prospect in the field.

A display apparatus comprises a display panel. The display panel emits a green light having a green energy and a green point of the CIE 1931 xy chromaticity under the operation of the highest gray level of a green image, and emits a blue light having a blue energy and a blue point of the CIE 1931 xy chromaticity under the operation of the highest gray level of a blue image. The ratio of the green energy to the blue energy is between 0.7 and 1.2. In the CIE 1931 chromaticity diagram, the coordinates of the blue point are bounded by the equation: y=−168.72x2+50.312x−3.635 and the equation: y=−168.72x2+63.81x−5.9174, while y is between 0.04 and 0.08.

The invention provides white ground blue spot glaze which comprises white ground glaze and blue spot glaze, wherein the white ground glaze material is prepared from the following raw materials in parts by weight: 47-53 parts of white feldspar, 9-15 parts of quartz, 15-21 parts of calcite, 5-7 parts of Chinese loive, 3.5-4.5 parts of antimony ore and 8-12 parts of bone ash; and the blue spot glaze material is prepared from the following raw materials in parts by weight: 9-15 parts of original medicines, 37-43 parts of melilite, 7-13 parts of quartz, 10-16 parts of limestone, 4-6 parts of spot fossil, 7-13 parts of iron ore, 1.5-2.5 parts of tin bar and 7-9 parts of bone ash. Compared with the prior art, the white ground blue spot glaze disclosed by the invention has the advantages that due to the scientific and reasonable ratio of the raw materials and the controlled firing process, the white ground blue spot glaze is stable in color generation, natural in color development, low in cost and high in yield which can reach 91% or above.

The invention discloses a white-light LED chip manufacturing method, and the method is characterized in that the method comprises the following steps: preparing a vertical structure GaN LED wafer through the substrate transfer technology; placing white glue in a cut channel of the GaN LED wafer, and carrying out baking and solidifying; forming a fluorescent glue layer on LED chips of the wafer; cutting the wafer along the cut channel, and obtaining a split white-light LED chips coated with the peripheries being provided with the white glue. Compared with the prior art, the method coats the peripheries of the LED chips of the waver with white glue, avoids the leakage of blue light of the white-light LEDs, is simple in operation, is low in cost, and is high in work efficiency. Moreover, the white light emitted by the packaged white-light LEDs is uniform and saturate in color, and has no yellow or blue spot.

The invention discloses a method for screening an alpha-amylase inhibitor. The method comprises: preparing an enzymatic reaction buffer solution, a substrate solution, an alpha-amylase solution, a color-developing reagent solution, and a to-be-tested product solution for later use; performing sample application of the to-be-tested product solution on a thin layer plate; allowing a solvent to be volatilized or using a proper developing solvent for developing, performing air-drying, and soaking the obtained product in the substrate solution; taking the obtained product out, allowing the solvent to be volatilized, soaking the obtained product in the alpha-amylase solution, and carrying out an enzymatic reaction at 5-50 DEG C for 10-60 min; after the reaction is completed, taking the obtained thin layer plate out, allowing the solvent to be volatilized, soaking the obtained product in the color-developing reagent solution for a color-developing reaction; and viewing the obtained thin layer plate in visible light. Blue spots which appear in the white or yellow or brown background are the alpha-amylase inhibitor. The invention provides the method which enables the alpha-amylase inhibitor to be conveniently fast screened and provides an ideal approach for screening active ingredients containing the alpha-amylase inhibitor from natural substances.

The invention provides a dynamic backlight control method, a dynamic backlight module, a display device and a storage medium, a lamp bead of the dynamic backlight module comprises a green chip and atleast two blue chips. The dynamic backlight control method comprises the following steps: receiving an information source signal; and when the signal source signal is a pure blue signal, closing the green chip, and driving two or more blue chips to output blue light. According to the invention, the overall brightness of the blue field can be improved, and color coordinate deviation caused by brightness improvement is avoided, so that the blue dot color purity is ensured.

The present invention provides a display panel and a display device, which belong to the field of display technology, and can solve the problem that blue spots appear in the peripheral area of the pixel area when the existing display panel displays L0. .The display panel of the present invention comprises: a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate. The first electrode and the second electrode are sequentially disposed on the first substrate. The first electrode and the second electrode are configured to form an electric field under a voltage, and drive liquid crystal molecules in the liquid crystal layer to be turned over. The display panel is divided into a plurality ofpixel regions. Auxiliary electrodes are disposed at least at a position surrounding the pixel region on the second substrate. The display panel and display device comprise the above display panel.

The invention discloses a preparation method of quick-frozen rhizoma dioscoreae blocks. In the main technical scheme, the preparation method comprises the following steps of cleaning rhizoma dioscoreae, soaking the rhizoma dioscoreae into a sterilization solution for 12-15 min, peeling and dicing the rhizoma dioscoreae, soaking rhizoma dioscoreae blocks into a color protection solution for 8-10 min, and performing sterilization and soaking for 8-12 min, performing quick freezing at the temperature of 31-37 DEG C below zero, and performing ice glazing, packaging and refrigeration to obtain thequick-frozen rhizoma dioscoreae blocks as a finished product. The quick-frozen rhizoma dioscoreae blocks is white without blue spots after being stored for 6 months and generating residual chlorine, has the viscosity larger than or equal to 1.8 Pa.s, the total bacterial number ( / g) smaller than or equal to 1000, the number of escherichia coli ( / g) smaller than 3 and the number of bacillus cereus ( / g) smaller than 3.

The invention provides a color vitreous enamel of Tang Dynasty, and a producing method thereof. The vitreous enamel is composed of a porcelain body, a black glaze and a spot glaze. The method comprises the following steps: processing a body material to form powder, adding water to form mud, stacking, and treading, kneading or mixing the mud; drawing the kneaded or mixed mud by hands to form a mud blank, air-drying, glazing, and sintering in a kiln after the body glaze is dry; putting the sintered glaze in a container, holding the foot bottom of the mud blank or a body, dipping into a container for containing a glaze in order to uniformly glaze the inside and outside of the blank, and rapidly glazing after the surface of the blank is basically dry; and adding water to a surface glaze to form a paste, pointing, brushing or throwing according to a needed shape by using a hair brush after the glazed blank is dry to form spots, air-drying, and sintering in a kiln or a liquefied gas or natural gas kiln. The method solves the technical problems of bad color, poor tactile sensation and no stereo perception of color enamels sintered through existing methods. The Lushan color vitreous enamel sintered through the method provided by the invention has the characteristics of natural flow of milky white blue spots, obvious liquid-liquid phase separation, smooth glaze surface and strong stereo perception of the color.

The invention belongs to the field of identification of medicinal materials, and in particular relates to a method for identifying pure cordyceps sinensis powder through microscopic staining and aims to solve the technical problem that the pure cordyceps sinensis powder circulated and sold in the market is difficult to distinguish. According to the technical scheme, the invention provides the method for accurately identifying the cordyceps sinensis powder. The method comprises the following steps of: taking cordyceps sinensis powder to be detected, and dyeing the cordyceps sinensis powder to prepare a smear; and performing microscopic observation on the prepared smear under a microscope, wherein if the specific structure of cordyceps sinensis can be clearly observed on each smear, obvious blue spots under iodine solution dyeing are absent, and obvious plant tissues are not observed, the powder can be judged to be pure cordyceps sinensis powder, otherwise the powder is impure cordyceps sinensis powder. According to the method, fine decoction piece powder can be clearly identified, the substances which do not belong to cordyceps sinensis are distinguished; and the method is low in cost, high in efficiency and high in accuracy, is hardly interfered by various added ingredients and has good application prospect in the field.

The invention discloses a method for screening monoclonal antibody hybridoma by the utilization of a visual antigen chip. Target antigens or target antigen analogues needed for screening the monoclonal antibody hybridoma are fixed to a substrate in a sample application mode, the prepared antigen chip is soaked into confining liquid for confining, then the antigen chip is soaked into cell supernatant which is generated by the positive hybridoma obtained at the early stage of monoclonal antibody preparation, then the antigen chip is sequentially soaked into enzyme-labeled secondary antibody and a developing solution for developing, and if brown or black blue spots develop on sampling points, it is judged that specific immune response exists between the hybridoma and the target antigens or the target antigen analogues fixed to the sampling points; if no spots develop on the sampling points, it is judged that no specific immune response exists between the hybridoma and the target antigens or the target antigen analogues. The screening period of the monoclonal antibody hybridoma is shortened, and production cost is reduced.

The invention relates to a manufacturing method using reducing atmosphere to fire scattering-blue glaze. The ground glaze of the scattering-blue glaze comprises, by weight percentage, 5-15% of Dicranopteris linearis ash, 25-40% of Yaoli glaze stone, 2-5% of Zhuming material, 1-3% of tin oxide, 5-10% of copper scale and 30-60% of saltpeter frit. The surface glaze of the scattering-blue glaze comprises, by weight percentage, 30-40% of Yaoli glaze stone, 15-30% of Shouan lime-flyash and 30-55% of saltpeter frit. The manufacturing method includes: preparing raw materials, performing ball milling, sieving, performing unique twice glaze application on a high-temperature biscuit-firing body, and firing the scattering-blue glaze under the reducing atmosphere of 1100-1200 DEG C. The method has the advantages that the manufactured scattering-blue glaze is even in blue spot scattering, stable in appearance color, good in decoration effect and promising in application prospect.

The invention discloses a polishing bending-preventing jig. The polishing bending-preventing jig comprises a bracket, wherein the bracket is provided with a supporting surface which is arranged in aninclined mode for supporting a workpiece, a limiting surface which is arranged below the supporting surface for limiting the bottom of the workpiece as well as a first limiting protective edge and a second limiting protective edge which are oppositely arranged at the two sides of the supporting surface for limiting the two sides of the workpiece. The polishing bending-preventing jig can effectively avoid a glass bending phenomenon in processes of pasting and peeling, avoids red-blue spots, extrusion light leakage and the like caused by bending, reduces badness after polishing, and increases the yield.

The invention relates to brown-field milky-white blue-spot glaze. The brown-field milky-white blue-spot glaze is prepared from ground glaze and spot glaze, wherein the ground glaze is prepared from the following components by weight percent: 50 to 60 percent of clay, 30 to 35 percent of feldspar and 10 to 15 percent of quartz; and the spot glaze is prepared from the following components by weight percent: 30 to 35 percent of quartz, 28 to 35 percent of melilite, 15 to 25 percent of calcite, 3 to 6 percent of fluorite, 2 to 4 percent of wood ash, 1 to 3 percent of bone meal, and 5 to 7 percent of zinc oxide. The invention also discloses colored glaze porcelain prepared by utilizing the brown-field milky-white blue-spot glaze. The brown-field milky-white blue-spot glaze disclosed by the invention is novel ceramic split-phase milky-light color glaze, a glaze layer is thick, colors produced by the glaze after being discharged from a kiln has specific variation unpredictable for people, gives people a force and dynamic impression and gives people firm and positive stimulation. The artistic charming is applicable to the beauty of the nature, no artificial pretension is made, and magnificence and solemnity are displayed in the thickness and moisture. The artistic effect of a device is effectively improved. The brown-field milky-white blue-spot glaze has high appreciation and collection value.

The invention discloses a method for breeding 'blue spot' hybrids. In the invention, hybrid 'blue spot' fry is produced by selecting single female epinephelus coioides as a female parent and single male epinephelus lanceolatus as a male parent and by distant hybridization, artificial parturition expediting, insemination, incubation and fry breeding. The method for breeding the 'blue spot' hybrids of the invention is simple in operation and suitable for mass production; the bred 'blue spot' fry has a survival rate of 5 to 10 percent and a breeding survival rate of over 95 percent, and both the survival rates are higher than those of the common groupers, so that the bred 'blue spot' fry has a promising market prospect.

The invention provides a thin layer identification method of rhamnus frangula bark and rhamnus purshiana bark. The method includes the steps of: 1) medicinal material treatment; 2) thin layer sample application; 3) developing solvent preparation; 4) development; 5) color developing and viewing; and 6) result determination. On a thin-layer plate, rhamnus purshiana bark shows yellow and blue spots, rhamnus frangula bark shows yellow, blue and red spots. The method provided by the invention has the advantages of strong specificity, simple operation, visual detection result, and easy determination, can quickly and accurately perform visual identification of hamnus frangula and rhamnus purshiana medicinal materials, and provides a reliable detection method for ensuring the correctness of medicinal material variety during medication.

The invention belongs to the medicinal material identifying field and in particular relates to a method for identifying cordyceps sinensis powder through microscopic dyeing. The invention aims to solve the technical problem that the sold pure cordyceps sinensis powder in market is difficult to identify. The technical scheme of the invention used for solving the problem is to provide a method for accurately identifying cordyceps sinensis powder. The method comprises the following steps: taking cordyceps sinensis powder to be detected, dying to prepare smears; placing the prepared smears under a microscope for microscopic observation, and if the special structure of cordyceps sinensis can be clearly observed on each smear without obvious blue spots caused by iodine staining and no obvious plant issue can be observed, judging that the sample is pure cordyceps sinensis powder; and if not, judging that the sample is not pure cordyceps sinensis powder. The method of the invention can be used to clearly identify fine cordyceps sinensis powder prepared for decoction and substances not belonging to cordyceps sinensis, the cost is low, the efficiency is high, method can be not easily interfered by various additives, the accuracy is very high, and the method has good application prospects in the medicinal material identifying field.

The present invention relates to a method for preparing stable speckled bricks. The preparation method includes: (1) green body pressing: white spots proportioning 5-10%, blue spots proportioning 10-20%, black spots proportioning 70-80%; (2) green body drying: temperature 80-130°C, time 40 to 60 minutes; ⑶ Simulation processing: apply a translucent glaze layer on the surface of the body, and then use inkjet printing to print inkjet false spots that are close to the size and color of the spots on the body. The color and spot effect of the translucent glaze are consistent with the body. The color and surface effect are basically consistent; ⑷Printing and decoration; ⑸Applying protective glaze: After decorating the color and pattern effects through screen printing, rubber roller printing or inkjet printing, apply transparent glaze slurry to protect the decoration, so that the spots can sink under the glaze layer , achieving highly simulated fusion with the spots on the green body itself; ⑹ Firing: temperature at 1150~1250℃, time 40~60 minutes.