53results about How to "Reserved nature" patented technology

The invention relates to a method and a device for extracting asphalt from oil sand through solvent extraction. The method comprises steps as follows: step 1, crushing and sieving asphalt-containing oil sand, mixing sieved oil sand with solvent at a temperature of 30 to 90 DEG C, and agitating, then extracting a solvent, so as to obtain mixed size; step 2, sieving the mixed size at the second time to remove rough sand, so as to obtain fine sand size; and step 3, centrifugally separating the fine sand size to obtain fine sand, separating the rest asphalt solution to obtain the asphalt, and removing the solvent. The invention also provides the device for extracting the asphalt from the oil sand through the solvent extraction. According to the method for extracting the asphalt from the oil sand provided by the invention, the method of extracting the solvent is carried out to extract the asphalt in the oil sand, and all processes in the method are physical processes, so little pollution is generated, and original nature of the asphalt can be kept; and the method is one of the most efficient technologies for applying the oil sand as a road building material.

The invention relates to a protoporphyrin fluorescent carbon dot, and a preparation method and application thereof. The preparation method comprises the following concrete steps: reacting protoporphyrin with polyethyleneimine (PEI) at 170 to 220 DEG C for 7 to 10 h; and then successively carrying out cooling, dialysis and filtering so as to obtain the protoporphyrin fluorescent carbon dot. The protoporphyrin fluorescent carbon dot prepared in the invention has good water solubility and maintains the intact properties of protoporphyrin; photodynamic effect produced by a porphyrin photosensitizer can effectively inactivate yeast cells, so bactericidal effect is exerted; and the preparation method has the advantages of simple reaction steps, mild reaction conditions, small danger, low toxicity, etc.

The present invention discloses a three-dimensional medical image segmentation method based on user interaction and shape prior knowledge. The method comprises: finding out edge control points of an area to be processed in an image, calculating the outer normal vectors at the control points, employing the Hermit interpolation method to solve an interpolation coefficient, and obtaining an interpolation function; initializing a deformation model curved surface corresponding to the area to be processed into the image, overlapping the center of the model curved surface with the center of the area to be processed, taking the discrete vertex on the deformation model curved surface as an interpolated point, and employing the interpolating point and the interpolation coefficient to solve the level set function value of the interpolating point; employing the coordinates of the interpolating point and the interpolation coefficient to solve the level set gradient vector at each interpolating point; and performing curved surface iteration movement of the level set and the normal vector of the deformation model curved surface interpolating point to allow the edge of the deformation model curved surface to be gradually close to the edge of the area to be processed of the level set function being zero and generate a three-dimensional image.

The invention relates to an Arabic gum component grading method. Within the critical concentration range of phase separation, Arabic gum is mixed with one or multiple biomacromolecules in aqueous solution to form mixed aqueous solution of the Arabic gum and the biomacromolecules, and liquid-liquid phase separation is carried out on the mixed aqueous solution by means of standing, or centrifuging or standing or centrifuging under a heating condition, so that different components of the Arabic gum are graded. The method provided by the invention is a pure physical process, the natural chemical structure of the Arabic gum is not changed, even no physical combination or gathering of components is caused, and the method provided by the invention only changes proportions of the components at different grades. The graded Arabic gum products can be applicable to emulsifier, thickener, coating material, binder, capsule material and the like in the industries such as food and biological medicine.

The invention relates to a preparation method for a high-toughness material of a polypropylene/shear thickening fluid microcapsule. The method comprises the following steps: firstly, dispersing nano silicon dioxide in polypropylene glycol under a high-speed mixing effect of a high-speed shearing and emulsifying machine to obtain a shear thickening fluid; secondly, uniformly mixing the prepared shear thickening fluid with water according to a certain ratio to obtain a uniform solution; thirdly, adding an emulsifier and an organic solvent into the uniform solution and mixing through a mixer to obtain a uniform water-in-oil emulsion; fourthly, transferring the water-in-oil emulsion into a three-mouth flask and adding isocyanate for reaction to obtain a shear thickening fluid microcapsule; fifthly, carrying out melt blending on polypropylene and the shear thickening fluid microcapsule in one or a combination of more of an open mixer, an internal mixer and an extruder to obtain the high-toughness material of the polypropylene/shear thickening fluid microcapsule. Compared with a general toughening polypropylene material, the rigidity of polypropylene cannot be reduced while the toughness of polypropylene is enhanced, the heat resistance and the processing flowability of polypropylene are improved, and the shear thickening fluid microcapsule is changed into solid powder which is more convenient to form in comparison with liquid.

The invention discloses an immunochemotherapy pharmaceutical composition. The immunochemotherapy pharmaceutical composition is formed by mixing a first mixture with a second mixture; the first mixturecontains immunoadjuvant imiquimod R837; the second mixture contains chemotherapeutic drug oxaliplatin which can cause immunogenicity death, and further contains poloxamer 188 and sodium alginate (ALG); the first mixture is an imiquimod emulsion obtained by mixing the imiquimod R837 with the poloxamer 188; imiquimod particles each have a particle size of 0.5-3 mum; the imiquimod emulsion undergoesmoist heat sterilization; and the second mixture is a mixture prepared in a manner that the sodium alginate (ALG) and the oxaliplatin are stirred and mixed with water, and filtration sterilization isperformed with a micrometer filter membrane. The new anti-cancer pharmaceutical composition can exert the synergistic anticancer effect, reduces the side effect, the cancer metastasis probability andthe cancer recurrence probability, and can inhibit the growth of a distant metastatic tumor and reduce the tumor recurrence probability through the immunoreaction while effectively killing a tumor insitu; and meanwhile, the production process is relatively optimal, and the product stability is high.

The invention relates to multifunctional nano microspheres (MPS) prepared by utilizing drain nano particle self-assembly, a preparation method thereof and dispersion thereof in water. The multifunctional nano MPS are prepared by (3-sulfydryl) propyltrimethoxyl silane, and the selected self-assembled drain particles are under 30nm. According to the invention, MPS are prepared, and the MPS and the drain particles produce self-assembly, so that the multifunctional nano MPS can be prepared, and further, the prepared multifunctional nano MPS are packaged by carbon dioxide so that the finally-obtained MPS can be uniformly dispersed in water solution. In the method disclosed by the invention, the drain nano particles are free from hydrophily modification before and during the self-assembly, and finally, the obtained nano material has better chemical/mechanical stability and water dispersibility so that the current requirements can be met.

The invention discloses a multi-sampling-rate voice recognition method, a device thereof and a system and a storage medium. The method comprises the following steps: firstly, under the condition thatthe audio sampling rate is not changed, feature extraction is carried out on audios with different sampling rates in a corresponding configuration mode according to different sampling rates, and the extracted audios are used for training a neural network model. The neural network model has a general speech recognition tag, in addition, a sampling rate classification label is also added, and a gradient inversion method is used to carry out adversarial training on the sampling rate classification label when the neural network model is trained, so that the multi-sampling-rate speech recognition model obtained by training can autonomously adapt to audios with different sampling rates. Thereafter, the multi-sampling-rate voice recognition model obtained by training can be used for speech recognition, and the purpose of uniformly processing audio input of multiple sampling rates by using the same speech recognition model is achieved.

The invention discloses a BODIPY-containing bactericidal material and a preparation method and application thereof. The preparation method comprises that BODIPY-Br and sodium azide undergo a reactionto produce BODIPY-N3, BODIPY-N3 and acetylated maltoheptaose undergo a reaction under the catalytic action of a CuCl/PMDETA complex to produce BODIPY-Mal, and the BODIPY-Mal, iodic acid and iodine undergo an iodination reaction to produce the BODIPY-Mal-I bactericidal material. The BODIPY-Mal-I bactericidal material has good water solubility and completely retains the properties of BODIPY. The photodynamic power generated by BODIPY-Mal-I can effectively inactivate yeast cells and especially kill gram-positive bacteria. The preparation method has the advantages of simple processes, mild reaction conditions, low risk and low toxicity.

The invention belongs to the technical field of analytical chemistry and particularly relates to a polymer nanofluorescent probe for detecting the pH value in a cell as well as application of the polymer nanofluorescent probe. The nanofluorescent probe is prepared by taking a compound 16-(4-dodecyl piperazine)-2-(2-morpholine ethyl)-1H-benzo(de)-isoquinoline-1,3(2H)-dione as a luminous compound and loading the luminous compound in an amphiphilic block polymer nanomaterial polystyrene-poly-b-t-butyl methacrylate(PS-b-PtBA) and has better water solubility and N,N-dimethyl sulfoxide solubility. In addition, the composite nanofluorescent probe has better photostability and anti-interference performance; fluorescence intensity and the pH value form a linear relationship in a wider range; the polymer nanofluorescent probe can be applied to the pH detection in solutions and living cells.

The invention discloses a method for improving an ash packing effect of cigarette paper. The method specifically comprises the following step: spraying an assistant solution containing guar gum and sodium tartrate or an assistant solution containing guar gum and modified beta-cyclodextrin to cigarette paper. According to the method disclosed by the invention, the ash packing effect of the cigarette paper is improved, so that the cigarettes have high sensory quality, and the overall quality of the cigarette paper is improved.

The invention discloses a method for rapidly preparing a high-performance SiGe high-temperature thermoelectric alloy material. The method comprises the following steps: (1), weighing various raw materials according to stoichiometric ratios of various Si80Ge20Px atoms, wherein x is 2-10; (2), carrying out high-frequency induction melting of the weighed raw materials, and naturally cooling to obtain an ingot; (3), carrying out melt-spinning of the obtained ingot so as to obtain a thin strip; and (4), grinding the obtained thin strip into powder, and carrying out discharge plasma activated sintering so as to obtain a SiGe high-temperature thermoelectric alloy. The method disclosed by the invention has the advantages of being short in preparation period, simple in process, high-efficiency, energy-saving and the like; the whole preparation process can be completed within 2 h; the conductivity of the prepared SiGe high-temperature thermoelectric alloy material is above 105 S/m; the power factor is above 3.5*10<-3> W/mK<2>; the thermoelectric performance optimal value ZT is up to 0.9 at 920 K; compared with the RTG level, the thermoelectric performance optimal value is increased by nearly 40%; and thus, the method disclosed by the invention has important practical application value.

The invention discloses a preparation method of a gold-platinum-silver material with an asymmetric structure. The preparation method mainly comprises the following steps of firstly, growing a gold nanorod by using a seed growth method, then cleaning the successfully grown gold nanorod to obtain a gold nanorod with higher purity, then taking the gold nanorod as a seed, adding a corresponding amount of surfactant and potassium tetrachloroplatinate, uniformly mixing, and controlling the reaction temperature, so that platinum successfully grows on the two ends of the gold nanorod, then cleaning a gold-platinum structure to obtain gold-platinum with higher purity, taking the gold-platinum as a new seed, adding a corresponding amount of the surfactant, silver nitrate and ascorbic acid solution, controlling the reaction temperature to finally obtain the asymmetric growth gold-platinum-silver material, and observing the growth condition through a transmission electron microscope. The gold-platinum-silver material with the asymmetric structure synthesized by the preparation method is uniform in growth; the preparation method has simple reaction conditions, high reaction rate and low cost.

Provided is a process for the production of a dyed fabric using enzyme aggregates. In particular, provided is a process that comprises a step of providing a woven fabric that comprises a base layer and an additional layer which is located on at least one side of the fabric, wherein the yarns of the additional layer comprise fibers that are at least partially dyed, and a step of contacting the woven fabric with enzyme aggregates such as cross-linked enzyme aggregates (CLEAs), to remove at least part of the dye from at least the yarns of said additional layer. The disclosure also provides a fabric obtained with the process and garments including the fabric.

The invention relates to a glass light guide plate and a manufacturing method thereof. The glass light guide plate comprises upper glass and lower glass, wherein the lower surface of the upper glass is attached to the upper surface of the lower glass; uniform quantum dots are coated on the lower surface of the upper glass in a vacuum evaporation manner; a diffusion layer used for diffusing and atomizing light rays is coated on the upper surface of the upper glass; and an optical dot layer used for converting a line light source into an area source is arranged on the lower surface of the lower glass. The glass light guide plate is widely applied to an edge-lighting backlight module of a blue LED lamp and replaces the traditional PMMA (Polymethyl Methacrylate) or MS light guide plates, quantum films are replaced, and aluminum backplanes are canceled, so that the TV module is developed to be ultrathin and ultra-high-definition; meanwhile, the properties of the light guide plate are remained, the optical dot design can be performed on the premise of optimizing the macroscopic color saturation, the uniformity of the picture is optimized, and the glass light guide plate has significances in ultrathin and ultrahigh color range TV modules.

The invention discloses a preparing process of high-substitution-degree carboxymethyl modified starch through a dissolving and gelatinating method. The process includes the steps that starch is heated in a solvent water solution until the temperature is higher than gelatinization point to carry out gelatinization or semi-gelatinization activating treatment on starch particles; a solvent method of the semi-gelatinated starch is used for carboxymethylation. The process of starch semi-gelatinization mainly includes the operation steps of primary emulsion blending, heating semi-gelatinization, middle washing, drying and smashing, and the carboxymethylation process mainly includes the operation steps of secondary emulsion blending, starch alkalization, chloroacetic acid etherification and follow-up treatment. The preparing process has the main creative advantages that starch gelatination activating method and the solvent method are combined to achieve semi-gelatinization of the starch particles. The characteristics of original starch are retained, chemical reactivity of the starch is improved, reaction efficiency and product substitution degree of solvent method carboxymethylation are improved, and product performance is improved.

The invention relates to an application of chitosan glutamate serving as a freshener, namely, a chitosan derivative with delicate flavors, and aims to solve the problem that threats are brought to consumers' health when extra sodium ions in food freshening are ingested and add some functions beneficial for human health. The freshener further comprises a chitosan glutamate derivative which is prepared by mixing chitosan and glutamic acid, 5'-inosinic acid and/or 5'-guanylic acid in a water solution. According to the chitosan glutamate freshener, the chitosan glutamate serves as the freshener, so that characteristics of glutamic acid are provided, and priorities of chitosan are reserved. The chitosan derivative with delicate flavors is chlorine-free and sodium-free, the technical problem that a plurality of inorganic sodium ions and chloride ions in existing fresheners is solved, and the chitosan glutamate freshener is provided with chitosan functions of antibacterial, immune regulation, film formation, thickening and the like that existing fresheners do not have.

The invention discloses a synthetic method of a gold-platinum bimetallic structure material. The bimetallic structure comprises a gold nanorod serving as a core structure and platinum serving as a shell structure. According to the synthetic method, a seed growth method is adopted, and platinum is grown on the gold nanorod. The synthetic method mainly comprises the following steps of firstly, growing the gold nanorod by using the seed growth method, and then cleaning the successfully grown gold nanorod to obtain a gold nanorod with high purity; then taking the gold nanorod as a seed, adding a corresponding amount of surfactant, platinate and a reducing agent, and uniformly mixing the gold nanorod with the surfactant, the platinate and the reducing agent; and finally, controlling the reaction temperature, so that platinum successfully growing on the gold nanorod, and observing the growth condition of the platinum through a transmission electron microscope graph. The synthesized gold-platinum bimetal is more uniform, the reaction conditions are more concise, the reaction speed is increased, and low cost is achieved.

The invention relates to a hybrid latex comprising polymeric particles having core-shell structure, wherein: (1) the comonomers of the core comprise: (a) monovinyl aromatic compounds, and (b) unsaturated carboxylic acid esters; (2) the comonomers of the shell comprise: (a) monovinyl aromatic compounds, and (b) conjugated dienes; wherein the glass transition temperature of the core is in the range of -50 DEG C to 50 DEG C, and the glass transition temperature of the shell is in the range of -50 DEG C to 50 DEG C. The invention also relates to the use of the hybrid latex in polymer waterproofing membrane and polymer modified mortars.

The invention belongs to the field of core-shell composite structure materials, and particularly relates to a micron gold cage shell structure material with a broadband absorption characteristic and apreparation method of the micron gold cage shell structure material. A monodisperse nanogold concentrated solution with a certain concentration is mixed with a PS@Au microsphere emulsion subjected tosurface modification, and nanogold particles are self-mounted on the surfaces of modified PS@Au microspheres through electrostatic interaction. According to the material and the preparation method, the surfaces of the PS@Au microspheres are coated with the foamed nanogold particles by virtue of a self-assembly technology, and finally, polystyrene microspheres in the centers are removed, so that anovel gold cage shell composite material with a core-shell structure is obtained. By means of the special structure, Plasma resonance absorption formed by the nanogold core shells prepared through aFrens surface growing method is achieved; MNPAu uniformly grows on the surface to form a photonic crystal resonance peak; and due to the strong coupling effect of the two peaks, the absorption of themicron gold cage shell structure material in an ultraviolet-infrared wave band is expanded into broadband absorption.

The invention discloses an orthogonal analysis and accurate reconstruction method of a one-dimensional signal. The orthogonal analysis and accurate reconstruction method comprises the following steps: carrying out empirical mode decomposition on an original signal x to obtain M corresponding intrinsic mode functions, carrying out standardization on the intrinsic mode functions, arranging to obtain one matrix in a column vector form, and establishing the optimization problem P of the matrix; setting an orthogonal matrix and a diagonal matrix obtained by singular value decomposition as follows, and solving an optimal solution of the optimization problem P, i.e., obtaining accurate orthonormal approximation U; finding the optimal projection of the signal x in a vector space which is formed by expansion of U; and reconstructing the signal x. By use of the orthogonal analysis and accurate reconstruction method, an optimized method is used for solving the accurate orthonormal approximation of the intrinsic mode function, an approximate vector can be efficiently obtained in real time, meanwhile, the approximate vector can retain the property of an original intrinsic mode function to a maximum extent, the optimal projection from the original signal to the approximate vector is obtained, and therefore, the approximate vector can be guaranteed to have a low reconstruction error so as to guarantee the accurate reconstruction of the one-dimensional signal.