102results about How to "Effective embedding" patented technology

The invention discloses a production method of water-soluble functional monascus powder, which belongs to the technical fields of biological engineering and health product preparation. In the invention, the water-soluble functional monascus powder containing a Monacolin K is prepared the following steps of: taking a high-yielding Monacolin K purple monascus without a notalin as a starting bacterium, carrying out solid state fermentation of corns, then extracting, condensing, adjusting the pH, adding cyclodextrine and embedding a water-soluble corn hydrolysate and spray drying; or the corn is fermented in a liquid state and then a fermentation liquid is manufactured into the water-soluble functional monascus powder containing the Monacolin K through removing a thalli by filtering, adjusting the pH, adding the cyclodextrine and embedding the water-soluble corn hydrolysate and spray drying; and detail researches are carried out on the technical conditions of fermenting, extracting, embedding and spray drying, thus obtaining the optimized technical parameters; the product has excellent water-solubility; the Monacolin K content in the monascus powder product can achieve 20g/kg; the Monacolin K proportion of an open ring structure can achieve more than 90 percent. The water solution which is prepared by the water-soluble functional monascus powder product of 20 percent can maintain clear and transparent under the room temperature, does not contain deposition and has better stability.

The invention discloses a synaptic transistor based on a two-dimensional semiconductor material and a preparation method of the synaptic transistor. The synaptic transistor comprises an insulating substrate, and a channel, a source electrode, a drain electrode and a gate electrode which are arranged on the substrate, wherein the channel is a two-dimensional semiconductor material; the source electrode and the drain electrode are arranged at the two ends of the channel respectively and form an ohmic contact with the channel material; the gate electrode and an electrical interconnection system formed by the channel, the source electrode and the drain electrode are kept in electronic insulation; an organic electrolyte covers a channel region and most of the gate electrode and comprises an organic carrier capable of being electrically insulated and ions capable of being migrated, and effective ion control of the gate to the channel material is formed. According to the synaptic transistor based on the two-dimensional semiconductor material and the preparation method of the synaptic transistor, an ion attachment-intercalation mechanism is utilized, and the characteristics of large surface area and adjustable resistance value of the two-dimensional material are combined, so that the device shows long-term and short-term synaptic plasticity, and the two characteristics can change witheach other along with the change of a gate signal. Meanwhile, the device has good linearity and ultralow operational power consumption, and the implementation and large-scale integration application of a high-precision neuromorphic device are facilitated.

The invention relates to a technique for strengthening local surface of an engine piston. A high-hardness abrasion resistant layer is formed on a piston skirt section surface slotted in advance by adopting a thermal spraying method, stirring and rubbing processing is carried out on the high-hardness abrasion resistant layer and surface of a base body, and a particle reinforced phase compound layer is formed under the action of thermal mechanical stirring, thus hardness and abrasion resistance of the surface of the piston are improved, the piston has the characteristics that the interior is tough and the exterior is hard, and coefficient of thermal expansion is reduced. The technique disclosed by the invention has the advantages of simplicity in operation, high efficiency, low cost and obvious effect and can be used for local surface strengthening of the engine piston made from aluminium alloy or magnesium alloy.

The invention belongs to the technical field of emulsions, and discloses a high-internal-phase emulsion of soybean protein isolate-pectin compound stabilized quercetin and a preparation method of thehigh-internal-phase emulsion. The method comprises the following steps: dissolving soybean protein isolate in distilled water to obtain a soybean protein isolate solution; dissolving pectin in distilled water, and adjusting the pH value to obtain a pectin solution; mixing the soybean protein isolate solution with the pectin solution; adjusting the pH value of the solution to 3.0-11.0; mixing the obtained solution with vegetable oil containing quercetin in proportion, then carrying out ultrasonic treatment, and carrying out centrifuging to obtain the high-internal-phase emulsion of soybean protein isolate-pectin compound stabilized quercetin. According to the invention, no surfactant is needed, and the obtained oil-in-water type emulsion is small in particle size, good in viscoelasticity and high in stability and has an excellent protection or controlled release effect on quercetin. The preparation method is low in instrument requirement, the method is simple and is easy to operate, andgood prospects are achieved in application aspects of novel nutrient substance conveying carriers and food structure modification base materials.

The invention discloses an anticorrosive polyaniline/silicon carbide/graphene composite coating and a preparation method thereof. Polyaniline and silicon carbide nanoparticles are composited through on-site polymerization firstly, then a polyaniline/silicon carbide material is coated with graphene oxide through electrostatic self-assembly, and a polyaniline/silicon carbide/graphene composite material is obtained through hydrazine hydrate reduction. Then the polyaniline/silicon carbide/graphene composite material is added to a solvent containing epoxy resin, a curing agent, a plasticizer and an antifoaming agent are added, and the anticorrosive polyaniline/silicon carbide/graphene composite coating is obtained finally. The adopted polyaniline and graphene have good electrical conductivity and can have an anticorrosive effect; silicon carbide is high in hardness and thermal stability and used for enhancing the coating performance. The prepared coating has excellent anticorrosive performance, the production process is mature and simple to operate, no complex equipment is required, and large-scale industrial production is facilitated.

The invention discloses water-soluble perylene imide compounds, a usage as a DNA intercalator, and applications thereof in the growth inhibition of cancer cells, and belongs to the technical field of chemical synthesis of biological drugs. Through inducing cation amino functional groups into perylene anhydride derivatives and a perylene mono-anhydride system, the water solubility of the perylene anhydride derivatives and the perylene mono-anhydride system is greatly improved; furthermore, the cation amino functional groups are in a photo-stability combination with perylene derivatives, and thus a series of novel water-soluble perylene imide compounds are obtained. The synthesized water-soluble perylene imide compounds can effectively be embedded between the base pairs of DNA double helix of nucleus and be used as a DNA intercalator. The synthesized water-soluble perylene imide compounds have a planar rigid structure, so that the compounds can be specifically enriched around fixed tissue cell nucleus, the compounds have the advantages of strong fluorescence and easiness in fluorescent imaging, and have a similar effect as the DAPI effect of commercial cell nucleus dye. The synthesized water-soluble perylene imide compounds can effectively inhibit the growth of cancer cells such as U2OS, HTC116, Hela, AGS, etc., and have a very prominent anti-tumor effect.

The invention relates to a biological recognition technology, and discloses a face posture detection method and device and a computer readable storage medium. The method comprises the following steps:presetting a training face image set; training a human face direction attitude angle calculation model based on a residual network according to the training human face image set; sending the receivedcurrent face image to a trained face direction attitude angle calculation model; classifying the deflection angles of the current face image in the roll direction, the pitch direction and the yaw direction into corresponding angle intervals according to the trained face direction attitude angle calculation model; and according to the trained face direction attitude angle calculation model, regressing the angle value of the angle interval corresponding to each deflection angle so as to acquire three attitude angles of the left side attitude, the front side attitude and the right side attitudeof the current face image.

The invention relates to a method for PVD film plating on surfaces of workpieces, belongs to the technical field of surface treatment, and solves the defects of weak product compactness and corrosionresistance caused by a certain defects in coating layers formed by single film plating technologies in traditional PVC technologies. The method for PVD film plating on the surfaces of the workpieces comprises the following steps: (A) precleaned workpieces to be plated are put in a film plating chamber; and then, the film plating chamber is vacuumized and heated; (B) after heating, argon is introduced for ion bombardment on the workpieces to be plated; and (C) working gas is introduced; a power supply is turned on to apply bias voltage to the workpieces to be plated; a target source is turned on to start film plating; then, the target source is driven by periodical change of an electric field and a magnetic field to switch between magnetron sputtering and cathode arc modes for film plating;and plating layers with corresponding materials are deposited on the surfaces of the workpieces to be plated to obtain the surface-plated workpieces. The method for PVD film plating on the surfaces of the workpieces can realize better film layer compact structures and efficient corrosion resistance.

The invention relates to an oridonin cubic liquid crystal nanoparticle and a preparation method thereof. The oridonin cubic liquid crystal nanoparticle is prepared from the following raw materials in percentage by weight: 0.1 to 0.5 percent of oridonin, 7 to 64 percent of amphiphilic lipid material, 6 to 29 percent of solvent, 1 to 8 percent of stabilizer, and 25 to 65 percent of water, wherein the amphiphilic lipid material is glycerol mono-oleate or phytould likeriol; the mass ratio of a liquid crystal material to the stabilizer is 1 to (0.01 to 0.30). The oridonin cubic liquid crystal nanoparticle provided by the invention is smaller in particle size, good in uniformity, and beneficial to endocytosis and transfer of enterocyte; by utilizing a unique structure of cubic liquid crystal, a dissolution barrier and a permeation barrier of the oridonin during an oral absorption process are effectively overcome, the oral relative bioavailability of the oridonin is remarkably improved, and meanwhile, the oridonin can be slowly released.

The invention discloses a nano-crystalline cellulose based 3D printing lactobacillus embedding material as well as a preparation method and application thereof. The method comprises the following steps of adding sodium alginate in a nano-crystalline cellulose solution, uand performing uniform mixing and centrifuging to obtain a mixed solution; adding chitosan in water, performing uniform mixing, and adding glacial acetic acid to obtain a chitosan solution; adding lactobacillus powder in the chitosan solution, and performing uniform mixing to obtain a chitosan-lactobacillus bacterial suspension; taking the mixed solution as an outer material, and the chitosan-lactobacillus bacterial suspension as an inner material, and performing 3D printing to obtain a printing product; and spraying the surface of the printing product with a calcium chloride solution, and performing curing and cold drying to obtain the nano-crystalline cellulose based 3D printing lactobacillus embedding material. For the nano-crystalline cellulose based 3D printing lactobacillus embedding material, the lactobacillus is immobilized by taking the nano-crystalline cellulose and the chitosan as carriers, so that efficient continuous cyclic fermentation of yogurt can be realized, and the problems of difficulty in preservation of lactobacillus, low utilization rate and high cost can be solved.

The invention relates to a method for constructing a porous structure on a surface of a polyether ether ketone scaffold. The method mainly comprises the following steps: A, preparing hard particles, concretely pulverizing a hard material, and carrying out sieving to obtain hard particles with a particle size of 200-800 microns; B, embedding the hard particles, concretely adhering the hard particles to the surface of the polyether ether ketone scaffold, placing the polyether ether ketone scaffold in a hot press, then carrying out heating to 170-190 DEG C, keeping the temperature for 1.5-2.5 h,and then applying pressure of 2-4Mpa to obtain the polyether ether ketone scaffold with the hard particles embedded on the surface; and C, carrying out acid etching treatment, concretely placing the polyether ether ketone scaffold prepared in the step B in a hydrofluoric acid solution for 44-52h, removing the hard particles by etching, and then carrying out cleaning to obtain the porous structure.The number and size of the porous structures obtained on the surface of the polyether ether ketone scaffold by the method can be controlled. After the scaffold is implanted into a human body, growthof bone tissues into the scaffold is facilitated, and bone integration performance is good. In addition, mechanical performance is good, and the scaffold structure is stable.

The invention discloses intestinal probiotic powder for abalone culture and a preparation method thereof and relates to a live bacteria preparation for abalone culture. The intestinal probiotic powder comprises probiotic dry powder, agar powder and feed. The preparation method comprises the following steps of: respectively activating Phaeobacter sp. AP1220 and Bacillus stratosphericus A3440, which are separated from abalone intestines via a culture medium, and then inoculating the Phaeobacter sp. AP1220 and the Bacillus stratosphericus A3440 into a fermentation culture medium for shaking culture so as to enable the concentration of thalli to achieve logarithmic phase 0.5-1.0 multiplied by 10<9>cfu/ml; mixing all strain fermentation solutions, then centrifugating, abandoning supernatant fluid, and performing precipitation, washing, centrifugation and sterilization on the thalli to get bacterial sludge; preparing a dry powder protecting agent; mixing the dry powder protecting agent withthe bacterial sludge, performing a film-forming reaction, then pre-freezing a mixture and further performing freeze-drying to prepare the active probiotic dry powder with an embedding layer; and mixing the probiotic dry powder, the agar powder and the feed to prepare the intestinal probiotic powder for abalone culture.

The invention relates to a lycium ruthenicum extract micro-capsule and lycium ruthenicum preparations prepared from the same. According to the lycium ruthenicum extract micro-capsule, lycium ruthenicum extract is dispersed into capsule materials to form spray liquid, and then the spray liquid is processed through a spray drying method or a spray condensing method to obtain the lycium ruthenicum extract micro-capsule. The lycium ruthenicum extract micro-capsule achieves micro-encapsulation of the prepared lycium ruthenicum extract and improves the bitter taste of lycium ruthenicum, particularly the hygroscopic problem caused by polysaccharide components, thereby improving the quality stability of lycium ruthenicum products, prolonging the shelf life, brining convenience to production, transportation and storage of the lycium ruthenicum products and facilitating large-scale industrial production. Meanwhile, through appropriate granulating processes, micro-encapsulated lycium ruthenicum extract dry powder can be processed into a granulated solid applicable to multiple preparation forms. The lycium ruthenicum extract micro-capsule and the lycium ruthenicum preparations prepared from the same achieve the effects of enhancing body immunity, clearing liver, improving eyesight, delaying senescence, improving sleep and resisting fatigue.

The invention discloses a composition containing probiotics as well as a preparation method and application of the composition, and belongs to the technical field of food microorganisms. The technical scheme adopted by the invention lies in that the composition containing the probiotics consists of edible oil, anaerobic or facultative anaerobic probiotics and entrapping wall materials. According to the composition containing the probiotics as well as the preparation method of the composition, provided by the technical scheme of the invention, the composition containing the probiotics can be effectively entrapped, so that the number of viable bacteria arriving at intestinal tracts can be greatly increased.

The invention discloses a weak and small human body target detection method based on accurate scale matching, and the method comprises the steps: aligning the scale distribution of a pre-training dataset and a target data set at an example level, and generating a more effective and more proper matching data set; in order to reduce the structural loss of the image caused by example-level alignmentdistribution, adopting a background processing method based on a probability structure and dynamically restoring an image by inhibiting image blurring and maintaining the context consistency around ahole. According to the method disclosed by the invention, the similarity between the pre-training data set and the target data set is effectively promoted, the information loss between an image structure and semantics can be effectively balanced, the performance on TinyPerson is obviously improved, and the performance is obviously improved in the aspects of average precision (AP) and missing rate(MR).

The invention provides a method for preparing low-smoke and high flame retardant powdered butadiene styrene rubber with the maximum smoke density less than 170 and the oxygen index greater than 39%. Allyl halogen and polar monomers are adopted in the invention to separately modify styrene-butadiene latex through graft polymerization. Then, a smoke inhibitor is treated through esterification reaction. Finally, the functionalized smoke inhibitor and the graft modified styrene-butadiene latex are mixed to directly agglomerate into powder. According to the invention, not only the flame retardant groups can be effectively embedded into the backbone of the powdered butadiene styrene rubber polymer, but also the compatibility between the smoke inhibitor and the styrene-butadiene latex is greatly improved, and problems that the smoke inhibitor disperses non-uniformly in the rubber matrix and is easy to migrate and precipitate and the like are overcome, and thus the powdered butadiene styrene rubber is endowed with characteristics of low smoke and efficient flame retardance.

The invention provides low-salt strong-fragrance pork essence and a preparation method thereof, particularly the preparation method of the low-salt strong-fragrance pork essence. The preparation method comprises the following steps:1) performing enzymolysis: adopting a manner that cooking is combined with enzymolysis, wherein the content of protein and the content of free amino acid are high; 2) adding white sugar, gourmet powder, enzymolysis vegetable protein, lard, dextrose monohydrate, spice powder and a Maillard reaction augmentor for performing a reaction; 3) adding water, table salt, modified starch, CMC and pork fragrant base for performing emulsification, and performing filtration and encapsulation, wherein the Maillard reaction augmentor comprises L-cysteine salt, ribose, L-proline, DL-methionine, xylose and L-glycine. The salinity content of the low-salt strong-fragrance pork essence prepared by the preparation method disclosed by the invention is lower than 8%, effective components and active components of fragrance are effectively embedded, the low-salt strong-fragrance pork essence is not liable to deteriorate, and the fragrance is rich.

The invention discloses an overall assembly type reinforcement printing construction method for a 3D printing concrete structure. The method comprises the steps that a structural member is selected, and a reinforcement material is determined according to the stress distribution and magnitude in the bearing force limit state and the stress strength ratio in the normal use bearing force state; the positions, number and forms of connecting sleeves are determined according to the joint point positions and the number of intersections of the reinforcement material; the printing process of concrete, the reinforcement material and the connecting sleeves is determined according to the spatial appearance of the structural member, and the timing positioning connection and pushing program of the reinforcement material and the connecting sleeves is edited according to the printing process; and a concrete layer is formed along the printing process, the reinforcement material and the connecting sleeves are placed into the unhardened concrete layer according to the timing positioning connection and pushing program and assembled, and the 3D printing concrete structure with the spatial multi-directional connecting sleeves integrally reinforced is formed. The 3D printing concrete structure prepared through the construction method forms a spatial rigidity-enhanced framework, and the spatial rigidity-enhanced framework is close to a steel reinforcement framework formed through a traditional construction method.

The invention discloses a silicon-carbon negative electrode material with a stable structure and good cycle performance and a preparation method of the silicon-carbon negative electrode material. The stable structure specifically refers to the stable internal structure of silicon nanoparticles and the stable structure of silicon-carbon particles formed by compounding the silicon nanoparticles, carbon nanotubes, graphite nanosheets and amorphous carbon. The silicon nanoparticles are high in amorphization degree and small in grain size, and the interior of the silicon nanoparticles is of a structure in which nanocrystals are uniformly embedded in an amorphous state. According to the silicon-carbon composite particles, a multi-layer frame structure is built through the graphite nanosheets, the multi-layer frame structure and the uniformly dispersed carbon nanotubes form a supporting structure; the silicon nanoparticles are in close contact with the carbon nanotubes and the graphite nanosheets to form dense composite particles; and the outer layers of the composite particles are coated with a layer of dense amorphous carbon material. The silicon-carbon negative electrode material is small in specific surface area (less than 4m < 2 >/g), high in compaction density, high in specific capacity and good in cycle performance (the capacity retention rate is as high as 86% after a whole battery undergoes 900 cycles at normal temperature).

The invention discloses a colorimetric detection method for an aryloxyphenoxypropionate herbicide based on a magnetic nanocrystal enzyme preparation, which comprises the steps of simultaneously embedding magnetic Fe3O4 nanoparticles MNPs, an AOPP herbicide hydrolase QpeH and ethanol oxidase AOx in a ZIF-8 crystal through a one-step synthesis method to prepare the magnetic nanocrystal enzyme preparation QpeH/AOx@mZIF-8, and detecting AOPP herbicide residues in an environmental sample through a colorimetric method by using the magnetic nanocrystal enzyme preparation as a biological enzyme sensor. According to the invention, the characteristics of stability, simplicity and low cost of the nano enzyme MNPs are effectively utilized, and the characteristics of strong specificity and high activity of the biological enzyme (QpeH, AOx) are combined to prepare the QpeH/AOx@mZIF-8 multi-enzyme system sensor, so that the problem that the AOPP herbicide is difficult to accurately, quickly and real-timely detect is effectively solved.

The invention relates to a medicinal preparation containing raw materials, especially belongs to lucid ganoderma products and a production technique thereof. The raw materials of young lucid ganoderma product comprise young lucid ganoderma which is the young pilous antler-shaped young body of fruiting body of which the pileus cap is not open. Advantages of the invention lie in that: the raw material is the young lucid ganoderma which is changed into helpful thing from waste; products have low pesticide residue, heavy metals and cost, high effective components and bioavailability; inherent restorative odour and effective components of lucid ganoderma are effectively guaranteed by extracting herbs with alcohol added with water and freezing to dry under vacuum. The production technique for lucid ganoderma products guarantees security and high efficiency of products, considers utilization of resource and has wide market prospect.