48results about How to "Increase the amount of preparation" patented technology

The invention discloses a method for preparing a porous covalent organic material by using the ultra-gravity method, and belongs to the technical field of preparation of porous covalent organic materials. The method comprises the following steps: under a high gravity field, the micromixing and mass transferring process is strengthened, materials in a cavity of a preferable over-gravity rotary bed are sucked into a rotor of the rotary bed through a rotating inner spiral pipe, and the materials are sheared by, mixed and reacted with a filler rotating at a high speed in the rotor. Compared with reaction under a normal gravity filed, the method is greatly increased in reaction rate, and shortened in reaction time; besides, as for reaction systems sensitive to air, the water-free and oxygen-free reaction condition can also be achieved without a glove box, and compared with low-dosage preparation in the glove box, the method is greater in preparation amount and higher in production efficiency.

The invention discloses a wind prevention, sand fixation and water retention afforestation method and belongs to the technical field of environmental protection engineering. The method comprises steps as follows: a curing agent is prepared from sodium carboxymethylcellulose, anionic polyacrylamide, ferrous chloride and water; the curing agent and sand are blended to form cured sand; deep holes for tree planting and shallow trenches for grass planting are dug in the sand land, water collecting hoppers are drilled in the deep holes, the deep holes and the shallow trenches are filled with the cured sand, and the cured sand form deep hole sand fixation and water absorption layers in the deep holes and form shallow trench sand fixation and water absorption layers in the shallow trenches; saplings are planted in the deep holes, the roots of the saplings extend into the mouth parts of the water collecting hoppers, and grass seeds are scattered in the deep holes and the shallow trenches; the grass seeds are covered with a mulching film for maintenance, and small ventilation holes are formed in the mulching film. The curing agent and the sand soil are blended, inside gaps of soil particles can be filled with the blended curing agent and sand soil, the cured sand particles don't easily disperse and jump, sufficient water can be continuously provided for plants, and the long-time wind prevention, sand fixation and water retention effects are achieved.

The invention discloses a method for preparing two main anthocyanin standard substances in cloudy juice of vitis davidii by utilizing high-speed counter-current chromatography. The method comprises the following steps: enriching the cloudy juice of vitis davidii by adopting a macroporous resin, eluting with ethanol, performing freeze drying to obtain a crude sample, performing high-speed counter-current separation on the crude sample with water in a solvent system, and separating to prepare anthocyanin standard substances, wherein the anthocyanin standard substances are respectively malvidin-[3-O-glucose-]-[5-O-glucose] with purity of 95.8% and malvidin-[3-O-beta-glucosyl-6-coumaroyl]-[5-O-beta-D-glucose] with purity of 92.2%. The yield of the two anthocyanin standards prepared from the cloudy juice of vitis davidii is respectively 122.77mg/L and 78.09 mg/L. A method for separating anthocyanin and polyphenol in the cloudy juice of vitis davidii by high-speed counter-current chromatography is established, and the method for preparing high-purity standard substances can meet large-scale preparation of natural anthocyanin of the vitis davidii.

This invention provides a small lightweight glider that is hollow and made from a molded thin film material. Typically the glider is formed in the shape of a bird or a plane. The body of the glider comprises top half and a lower half, which form a hollow fuselage, a left wing and a right wing extending laterally from the fuselage. The glider also comprises a ballast weight, a stiffener, and optionally an interior skeleton. The interior of the glider is open to the outside atmosphere and requires no inflation.

The invention discloses a part making method and device, the part making method is as follows: when different colors of oxidation coloring of at least two regions in a part are needed, judging if a first region with a first gradient greater than a preset gradient exists in the least two region; when a judging result shows that the first region exists, obtaining a first standard specification size of the first region; according to the first standard specification size, generating an oxidation size larger than the first standard specification size; obtaining making parameters matching with the oxidation size; making the part based on the making parameters to enable the actual size of the first region to meet the first standard specification size after different colors of oxidation coloring of the part. By use of the method for oxidation size making of the part, the technical problem that color separation regions of different colors of oxidation coloring are limited by part shapes is solved, and the part shape and color design diversity are increased.

The invention discloses a production method of natural tremella polysaccharide, wherein the production method comprises the following steps: selecting dry pest-free and non-toxic tremella, and crushing for standby application; adding distilled water into a container containing the dry tremella, extracting, adjusting the pH to 9.0 or more with an alkali, and extracting for 24-28 h at room temperature; after completion of the extraction, adding cation resin, washing, and adjusting the pH to 7.0 or less; next, intercepting high-molecular-weight impurities with an ultrafiltration film; concentrating the filtrate with a single-effect concentrator to the proportion of 1:3-1:5; carrying out alcohol precipitation of the concentrated liquid with ethyl alcohol, stirring for 1-2 h, and allowing to stand for 12-18 h; then using a plate type filter press, and collecting a white solid, namely the tremella polysaccharide. The invention also discloses an application of the natural tremella polysaccharide in production of cosmetic raw materials. The natural tremella polysaccharide has excellent antioxidant property; compared with ordinary tremella polysaccharide, although the final concentrations of the tremella polysaccharides are the same, the natural tremella polysaccharide has more excellent antioxidant property and has the effect of preventing skin aging.

The invention relates to a wastewater treatment method in a kitchen waste recycling treatment process. The wastewater treatment method comprises the following steps: storing wastewater, separating and filtering for the first time; heating, separating for the second time; removing sludge; dehydrating; filtering for the second time; and storing effluent. According to the wastewater treatment method in the kitchen waste recycling treatment process, certain microbes which cannot be filtered can be heated and filtered, so that the cleanness degree of drained clear water can reach an ideal standard and has the effect of preventing secondary environmental pollution.

The invention discloses a 4-iodophenyl carborane derivative and a preparation method thereof. Commercialized organic reagents 4-iodoaniline and a diacetonitrile decaborate complex and several easily-synthesized substituted alkynes are adopted as the starting raw materials, carrying out diazotization reaction, Sonogashira coupling reaction, iodine exchange and alkyne addition reaction are carried out to form a series of 4-iodophenyl carborane with different substituent groups. The preparation method provided by the invention has the advantages of strong group applicability, easy purification and separation, high synthesis yield and high reference value.

The invention discloses an automatic glue preparation device, which includes a weighing system, a stirring system, a subpackaging system and a mixing barrel. The weighing system comprises an electronic balance and a display connected by a signal line. The stirring system comprises a working platform and a support column, an upper displacement restrictor, a middle displacement restrictor and a lower displacement restrictor are installed on the right side wall of the support column from top to bottom, a barrel body fixation frame is mounted at the middle part of the left side wall, and an air cylinder is mounted above the support column. A mobile platform is mounted above the air cylinder, the upper end of a fixation rod is fixed to the lower undersurface of the mobile platform, two groups of mobile rods are fixed on a barrel cover, and the upper ends of the mobile rods are fixed to fixed to the lower undersurface of the mobile platform, the barrel cover is communicated with the ventilation port of a ventilation system, one ends of stirring blades and a stirring frame are all fixed to the lower undersurface of the mobile platform, and the other ends all pass through the barrel cover. The subpackaging system consists of a material splitting barrel cover and a pneumatic pump set. The automatic glue preparation device provided by the invention realizes the functions of automatic weighing, mixing and subpackaging of glue solution, and guarantees mixing uniformity and consistency.

The invention discloses a bubble blowing device. The device comprises a supporting assembly and bubble generating members, wherein the bubble generating members are provided with multiple bubble generating holes, and the bubble generating members are fixed on the supporting assembly. The device is provided with the bubble generating members with porous structures, a large number of bubbles can begenerated simultaneously to facilitate the inspiring of game interestingness of children to improve user experience, and the development of industries is promoted; the overall bubble blowing device can be folded due to the foldable bubble generating members, and a user can accommodate and carry the bubble blowing device conveniently; a sector bone is connected with the bubble generating members toimprove the stability when the bubble generating members are spread and prevent the clamping among the bubble generating members, and the bubble generating members are conveniently and rapidly spreadand folded.

The invention discloses a device for preparing a nickel-plating solution. The device comprises a liquid preparation barrel, a nickel group feeding hole, a water inlet pipeline, a liquid storage barrel and the like. The device is characterized in that a liquid preparation circulating pump is arranged on the liquid preparation barrel; a liquid storage circulating pump and a nickel-plating solution output pipeline are arranged on the liquid storage barrel; extracting pumps are also arranged on the liquid preparation barrel and the liquid storage barrel. The device has the beneficial effects that automation of preparation, storage and transportation of the nickel-plating solution is achieved by using three electric mechanical pumps; the production efficiency is greatly improved. Large-volume liquid preparation and storage barrels are utilized, so that the preparation quantity of the nickel-plating solution is increased; the field efficiency is improved; the device is simple and practical in structure.

The invention provides a preparation method and an application of an adipose-derived mesenchymal stem cell exosome. The preparation method of the adipose-derived mesenchymal stem cell exosome is characterized in that the preparation method at least includes the following steps: (1) diluting adipose-derived mesenchymal stem cells and extruding to obtain an extrusion liquid; (2) placing the extrusion liquid into a gradient separation liquid for centrifugation, and reducing speed without braking to obtain a layered mixed liquid, wherein the layered mixed liquid comprises an upper layer component,an intermediate layer component and a lower layer component; and (3) collecting the intermediate layer component, mixing with adipose-derived mesenchymal stem cell exosome, and centrifuging to obtaina precipitate which is the adipose-derived mesenchymal stem cell exosome. The preparation amount of the exosome prepared by the preparation method of the adipose-derived mesenchymal stem cell exosomeis much higher than that of the traditional exosome; and the exosome has a better liver disease treatment effect.

The invention discloses a sandy soil greening construction method, and belongs to the environment protection engineering technical field; the method comprises the following steps: preparing a curing agent; mixing the curing agent with sandy soil so as to form curing sand; digging deep pits and shallow trenches in the sandy soil, drilling water funnels into the deep pits, filling the curing sand into the deep pits and shallow trenches, planting saplings into the deep pits, allowing sapling roots to extend to the water funnel mouths, and spreading grass seeds in the deep pits and shallow trenches; laying fine sands on the grass seeds, using a mulch film to cover the grass seeds, opening vents on the mulch film, inserting wooden slots around the mulch film, and pouring slurry into the slots so as to form a water fence; watering the grass seeds for maintenance, and irrigating in every 1-2 days until the grass seeds germinate. The method mixes the curing agent with the sandy soil so as to fill inner gaps of the soil particles; the curing sand particles cannot easily disperse and jump, thus contentiously providing sufficient water for plants, and realizing long term windproof, sand solidification, water retention and greening effects.

The invention discloses a method for preparing amygdalin, comprising the following steps: S1, preparation of an extract: fetching a bitter apricot kernel medicinal material as a raw material, crushing and sieving, carrying out enzyme deactivation, degreasing, filtering and fetching filter residue, dissolving with alcohol, carrying out ultrasonic extraction, filtering, and concentrating a filtrate to obtain an extract mainly containing amygdalin; S2, normal phase column chromatographic separation: using ethyl acetate-methanol as an elution solvent and using silica gel as a filling material and carrying out normal phase column chromatographic separation on the extract of amygdalin, collecting the elution solvent containing amygdalin, and carrying out reduced pressure distillation to obtain an amygdalin crude product; and S3, high-speed counter-current chromatographic purification: using ethyl acetate-n butanol-water as a solvent system, and carrying out high-speed counter-current chromatographic purification on amygdalin. By the above preparation method, purity of the prepared amygdalin is high, and one-time preparation amount is large. There is no influence on activity of the sample, and there is no additional pollution. The product can be applied to medicines, cosmetic, health products and the like.

The invention provides a preparation system and method based on disinfectant fluid. The preparation system based on disinfectant fluid comprises a purified water preparation unit, an electrolysis unitwhich is connected to the output end of the purified water preparation unit, an electrolyte filling unit which is connected to the output end of the electrolysis unit, and a split charging unit whichis connected to the output end of the electrolyte filling unit. According to the preparation system and method based on disinfectant fluid, through arranging the purified water preparation unit, filtration treatment of tap water is carried out, impurities and bacteria contained in the electrolyte are completely treated, purified water meeting the production standard is prepared, tap water in a traditional preparation system is replaced, the electrolyte is prevented from being polluted in the electrolysis process, meanwhile, the utilization rate of the electrolyte is increased, the electrolytedoes not need to be frequently added again, and consumption of the electrolyte is reduced.

Separating unit of chromatograph comprises following parts and steps: solvent system for preparing component stationary phase, mobile phase; pumping prepared stationary phase or pressing it in air pressure mode to working drum of main unit and filling up the drum with the stationary phase; running the main unit and pumping soluble crude extract of camptothecin in prearranged flux and mobile phase; based on detected spectrogram, collecting monomolecular camptothecin component from mobile phase. The two-phase solvent system is composed of hydrocarbon alkylogen, fatty alcohol and water or buffer solution of potassium phosphate under normal temperature and pressure. Upper phase is stationary phase and lower phase is mobile phase. Features of the invention are: easy of operation, small capacity of organic solvent, high efficiency. Content of product of pure monomolecular camptothecin is as high as 98%.

The invention relates to a method for separating and purifying desacetyl asperulosidic acid methyl ester by using a semipreparative high-speed countercurrent chromatograph. The method is characterized in that a solvent system is composed of n-heptane, dichloromethane, methanol and water; the solvent system is placed in a separating funnel and sufficiently shaken and then stands still for layering, the upper phase is used as a stationary phase, and the lower phase is used as a mobile phase; and herba oldenlandiae crude extract is dissolved in the lower-phase solution to prepare into a sample solution, the sample solution is detected by the high-speed countercurrent chromatograph and an ultraviolet spectrograph, fraction is collected according to the chromatographic peak, concentrated and dried to finally obtain high-purity desacetyl asperulosidic acid methyl ester. The method has the advantages that solid filler is not used; irreversible adsorption is not existed; a large amount of desacetyl asperulosidic acid methyl ester can be separated efficiently and rapidly by the method; the preparation process is simple and easy to operate; and the purification efficiency is high, thereby laying a solid foundation for extraction and utilization of active ingredients in herba oldenlandiae.

The invention belongs to the technical field of agricultural product processing, and particularly relates to a method for extracting and preparing resistant starch from Chinese yam and the prepared resistant starch. The method for extracting and preparing the resistant starch from the Chinese yam comprises the following steps: firstly extracting starch from Chinese yam, mixing and stirring the extracted Chinese yam starch with lipid compounds at a temperature lower than 0 DEG C, and then removing fast digested starch and slow digested starch components from the stirred product to obtain the resistant starch. The method is simple to operate; in the step of extracting yam starch, normal temperature is adopted for extraction, so that the method is mild and efficient, and the morphology of theyam starch is not excessively damaged; meanwhile, when the resistant starch is obtained from the yam starch, two stages of low temperature are creatively utilized to allow lipid substances and RDS and SDS starch, in particular the RDS starch to be reacted and converted to have the characteristics of the resistant starch, so that the preparation amount of the resistant starch is improved.

The invention discloses a mixing system for improving solid-liquid-gas mixing performance. The mixing system comprises a gas-solid ejector, a solid-liquid mixing ejector and a powder-gas conveying pipe connected between the outlet end of the gas-solid ejector and the powder-gas inlet end of the solid-liquid mixing ejector. The solid-liquid mixing ejector is higher than the gas-solid ejector; the gas-solid ejector is used for introducing a powder-gas mixture obtained by mixing the high-speed gas flow and the dry powder into the powder-gas conveying pipe; the liquid inlet end of the solid-liquidmixing ejector is used for introducing liquid with certain pressure, negative pressure is formed in the solid-liquid mixing ejector through flowing of the liquid, and the powder-gas mixture in the powder-gas conveying pipe is sucked into the solid-liquid mixing ejector to be mixed with the liquid. According to the mixing system, the suction range of a powder-gas mixture can be increased to 7 m, meanwhile, the dry powder adding amount in unit time can be increased, the single polymer solution preparation amount is increased, and accurate preparation of the concentration of a polymer solution and preparation of the polymer solution with the high concentration are facilitated.

The invention discloses a method for enhanced nitrogen removal by utilizing constructed wetland blockages. The method comprises the following steps: recovering the blockages of a constructed wetland; preparing aged and withered plants, and drying; mixing the blockages of the constructed wetland and the aged and the withered plants, performing anaerobic fermentation after a mixture is pre-treated by utilizing strong alkali liquid, recycling supernatant fermenting liquid, and measuring COD (Chemical Oxygen Demand) Cr content and the total nitrogen content of the supernatant fermenting liquid; taking the fermenting liquid as a carbon source, adding the fermenting liquid into inlet water of the constructed wetland according to the proportion of the CODCr to N of the fermenting liquid of 4 to 8, and performing nitrogen removal treatment of the constructed wetland. By adopting the technical scheme of the invention, the nitrogen removal rate of low-carbon high-nitrogen sewage can be improved; the weight reduction treatment of waste of the constructed wetland can also be realized; the problem that the blockages affect long-term high-efficiency operation of the constructed wetland is solved; the secondary pollution is low; a biological denitrification nitrogen removal effect is good; the utilization rate of the blockages serving as regenerative resources is improved.