184results about How to "Good synthesis effect" patented technology

The invention relates to a step frequency inverse synthetic aperture radar (ISAR) imaging method based on coherent processing. The method mainly solves the problems in a traditional parameter estimation method of being low in calculating efficiency and having large effects of phase error on frequency synthesis after envelope compensation. The method includes the steps: building a step frequency ISAR echo signal model; conducting motion parameter estimation according to the echo signal model; constructing a penalty function and compensating a sub-pulse envelope of echo signals; conducting frequency synthesis based on coherent processing on the compensated echo signals; conducting inverse fast Fourier transformation (IFFT) on the synthesized echo signals, and obtaining a high-resolution range profile; and conducting direction imaging through an RD algorithm or an RID algorithm to obtain a directional high-resolution image. Experiments prove that the method has the advantages of being high in phase error compensation precision and calculation efficiency and can be used for achieving two-dimensional high-resolution ISAR imaging of a target.

The invention discloses a medical image synthesis method based on a generation countermeasure network, and relates to the field of image synthesis. A neural network generator branch of a healthy imageis synthesized through an infection focus image on the infection focus image to perform non-focalization on an infection focus area; a neural network generator branch of the infection focus image issynthesized through the healthy image on the healthy image to perform focalization on a certain area on the healthy image; a generation countermeasure loss function is constructed between a generationimage and a real image according to a generation countermeasure network model. The method has the advantages that cyclic consistency loss functions are constructed between the infection focus image and the infection focus image and healthy image correspondingly generated by two generators and between the infection focus image and the healthy image correspondingly generated by the two generators in order to stabilize the training of the neural network; fidelity loss functions are constructed on the infection focus image and the non-infection focus area of the correspondingly generated healthyimage in order to optimize the generated healthy image.

The invention relates to phenylacetylene capped polyether ether ketone oligomer and a preparation method thereof, belonging to the technical field of high polymer materials and syntheses thereof. The invention relates to a polyether ether ketone oligomer having higher glass transition temperature, good heat resistance and low viscosity, and the polymerization degree n of the oligomer is 1, 2 or 3. The synthesis of the oligomer can adopt a one-step method or a two-step method. The preparation method of the oligomer comprises the following steps of: adding biluorine and bisphenol monomers to anorganic solvent, after reacting water into salts for 2 to 3 hours and polymerizing for 4 to 5 hours, adding a phenylacetylene end capping agent, and then continuing to reacting for 2 to 4 hours; discharging an obtained capped polyether ether ketone oligomer material to a hydrochloric acid aqueous solution; and cleaning and drying to finally obtain a powdered polyether ether ketone oligomer capable of self crosslinking. The polyether ether ketone oligomer is a polymer having self heat crosslinking property and has the processability of thermoplastic resin and the high heat stability of thermosetting resin.

The invention belongs to a method for producing plant fertilizers, more particularly to a method for producing a solid-state Ca/Mg/Ti/Fe/S/N/Si compound fertilizer from water-quenched blast furnace slag. The invention is characterized in that: the raw materials include titanium oxide-containing water-quenched blast furnace slag, ammonium sulfate, ammonium hydrogen sulfate, ammonium pyrosulfate and ammonium persulfate; the method comprises the following steps: ball-milling Ti-containing water-quenched blast furnace slag to obtain powder of particle size of 60-160 micrometers, mixing the furnace slag powder with 3-20 times of one substance selected from ammonium sulfate, ammonium hydrogen sulfate, ammonium pyrosulfate, ammonium persulfate, or a mixture thereof, heating the resulting mixture up to 200-500 DEG C and maintaining the temperature for 10-65 min, and crushing clinkers to small pieces of 4-12 mm diameter. The invention utilizes Ti-containing water-quenched blast furnace slag and other raw materials to produce plant fertilizers, and thereby realizes environmental protection, Ti resource utilization and nutrient supplementation to plants.

The invention provides anticorrosive paint for inner and outer wall decoration of a power station transformer, which comprises main paint and a curing agent. The anticorrosive paint is characterized in that the main paint and the curing agent of outer wall paint are prepared according to the proportion of 5:1, the main paint and the curing agent of inner wall paint are prepared according to the proportion of 8:1, and the curing agent is IPDI tripolymer-modified HDI biuret. The inner wall paint of the power station transformer has excellent oil resistance, and a paint film can still show good protection property and electrical insulating property when being soaked in transformer oil with a temperature of between 90 and 110 DEG C for a long time. The outer wall paint of the power station transformer has excellent weather resistance, can effectively improve the protection property, and can prolong the service life of equipment, reduce maintenance cost and power cut loss, and improve power transmission efficiency.

The invention relates to a single-viewpoint video depth obtaining method based on scene classification and geometric dimension. The single-viewpoint video depth obtaining method specifically comprises the following steps: (1) judging whether a current frame image belongs to a scene in which a camera is static and an object moves or a camera moving scene; (2) judging whether needing to estimate an initial depth graph of the current frame image; (3) figuring out the initial depth graph of the current frame image; and (4) for the scene in which the camera is static and the object moves, obtaining a motion depth graph of the current frame image and fusing the motion depth graph of the current frame image with the initial depth graph; for the camera moving scene, carrying out global motion compensation, carrying out motion estimation on adjacent frames of images after the global motion compensation by using an optical flow method, judging whether a moving object exists, and determining whether needing to fuse with the initial depth graph. By adopting the single-viewpoint video depth obtaining method provided by the invention, no specific scene is relied on, the calculated amount is appropriate, the generated noise is small, a depth graph better conforming to actual scene distribution is obtained, and a 3D video with a better effect is synthesized.

The invention provides a virtual reloading method based on a 2D image, and belongs to the field of computer vision. The method comprises the following steps: firstly, generating a segmentation map ofa target garment worn by a user to clearly divide the limb of the user and the range of the garment; and then USING the newly generated segmented image to guideand synthesize a final image, so that the phenomenon of missing caused by mutual competition of the clothes and limbs is avoided, and a better synthesis effect is obtained. Compared with a traditional 3D virtual reloading method, the methodhas a wider application scene.

The invention provides a genetically engineered strain for high yield of ergothioneine and application. The stain takes escherichia coli as a host, and a coding gene hisG* of a corynebacterium glutamicum ATP phosphoribosyl transferase HisG mutant is integrated on a genome of the host; the copy number of a histidine operon gene hisDBCHAFI is further increased on the genome of the host; a mycobacterium smegmatis ergothioneine operon gene egtBCDE is further integrated on the genome of the host; an Escherichia coli glutamylcysteine ligase encoding gene gshA is integrated on the genome of the host,so that the synthesis of the ergothioneine is promoted; a neurospora crassa C-S lyase coding gene egtE<ncr> is further integrated on the genome of the host, so that the synthesis of ergothioneine isfurther promoted; and a gene egtB*<msm> of a sulfoxide synthase mutant is integrated on a genome of the host, so that synthesis of ergothioneine is further promoted.

The invention discloses a device for obtaining a high dynamic range image. The device comprises a camera, a first spectroscope, a second spectroscope, an HE (High Exposure) sensor, an ME (Medium Exposure) sensor and an LE (Low Exposure) sensor, wherein a camera lens is vertically arranged, the three sensors are all arranged at the same side of the camera lens, the HE sensor is parallel to the camera lens, the ME sensor is vertical to the camera lens, and the LE sensor is parallel to the ME sensor, wherein the first spectroscope and the second spectroscope are arranged in an area surrounded by the camera lens and the three sensors, the first spectroscope is at an angle of 45 degrees with the camera lens, and the second spectroscope is vertical to the camera lens. The invention also provides a method for obtaining the high dynamic range image. By utilizing the device and the method, the HDR image can be obtained.

The invention provides a composition for rapidly alleviating fatigue and enhancing resistance, wherein the composition comprises electrolyte, trace elements and nutrients, the preparing process comprises the steps of batching by determined proportion, charging trace elements such as copper, Zinc, and meeting the formula designed requirement.

The invention relates to a cardanol phenolic-group non-ionic type dimeric surfactant, the natural product, namely cardanol is used as the raw material, and the cardanol phenolic-group non-ionic type dimeric surfactant is compounded with high yield after alkylamine coupling and a subsequent ethoxylation reaction. The raw material, namely the cardanol is from cashew nut shells which are natural products, low in cost, easy to obtain and sustainable, and high-added-value development and utilization of a large amount of cashew nut shell waste are facilitated. The synthetic method is high in atom economy. The superior cardanol phenolic-group non-ionic type dimeric surfactant which is deuterogenic from natural cardanol is obtained through the process route which is short in synthetic route, convenient to process and high in product yield and superior. The technological process is corrosion free and pollution free and can not generate any harmful compound, so that the technology has good environment friendliness. The raw material of the surfactant is wide in source and low in cost, the technological route is short, production cost is low and economy is good.

A composition for improving osteoporosis and increasing bone mineral density, a preparation method of the same and an application of the same in preparation of a health-caring product. The composition comprises an active ingredient and auxiliary materials and is characterized in that the active ingredient includes following components, by weight, 65-85 parts of a raw medicine in an extract of epimedium, 5-15 parts of glucosamine, 5-15 parts of chondroitin sulfate, 1.5-3.5 parts of collagen and a proper amount of vitamin D3; and the auxiliary materials include following components, by weight, 1.5-4.5 parts of an excipient and 0.2-1.5 parts of a lubricant. The composition is designed especially for middle-aged and elderly people and is strong in targeted performance. In the invention, the composition is prepared through integration of Chinese and western medicines, not only is traditional Chinese medicine guide theory inherited but also modern medicinal treatment methods are referenced. An experimental result proves that epimedium in the formula can increases the bone mineral density and the chondroitin sulfate, the glucosamine, the collagen and the vitamin D3 have an effect of improving the osteoporosis. The composition has excellent effects of increasing the bone mineral density and promoting absorption of calcium.

The invention discloses an electromagnetic field-constrained plasma enhanced oxidation calcination method of a high-nickel positive electrode material of a lithium ion battery. The method comprises uniformly mixing a precursor and lithium source powder, placing the mixture into a calcination device, carrying out calcination, continuously feeding oxygen-containing gas into the calcination device so that the oxygen-containing gas produces active oxygen with positive charge through plasma discharging, and applying an electromagnetic field in the calcination device so that active oxygen movement produces deflection, active oxygen is constrained and enriched around the precursor and lithium source powder and the high-nickel positive electrode material is synthesized. The method utilizes lithium carbonate as a lithium source, can synthesize the high-nickel positive electrode material having excellent performances in air, and observably reduces a material preparation cost. The method has a great significance for improving comprehensive performances of the high-nickel positive electrode material and has effects of reducing a cationic mixing degree of the high-nickel positive electrode material, improving cycle performances and a rate capability of the material, reducing material alkalinity and improving material processing performances.

The invention provides an application of a method for the autocrine secretion of an extracellular matrix by stem cells and the induction of the stem cells to become hepatocytes. The extracellular matrix is secreted by inducing bone marrow mesenchymal stem cells and removes the matrix of the bone marrow mesenchymal stem cells. The invention concretely provides the method for inducing the bone marrow mesenchymal stem cells into hepatocytes by the extracellular matrix according to actual demands. The method for generating the hepatocytes through induction has the advantages of high efficiency, practicality, high induction efficiency and good differentiation effect, and the glycogen synthesis capability and the urea synthesis capability of the hepatocytes obtained after the induction are strong.

The invention relates to a recomposed escherichia coli base cell for efficient synthesis of terpene chemical compounds as well as a preparation method and application thereof. Particularly, an escherichia coli endogenous 2-C-methyl-D-erythritol-4-phosphoric acid (MEP) precursor pathway is reconstructed; the reconstructed escherichia coli base cell is utilized to perform the efficient biological synthesis of the terpene chemical compounds; the reconstruction of the precursor pathway mainly comprises the steps of fully digging the MEP precursor pathway gene modules of the sources of other natural microorganisms, screening gene modules with excellent characteristics to be expressed in the escherichia coli, and at the same time, performing the downstream synthesis pathway for integrally assembling the colibacillus chemical compounds in the reconstructed base cell, wherein the colibacillus chemical compounds include sesquiterpene chemical compounds such as amorphadiene, diterpene chemical compounds such as shell alkene, tetraterpenes chemical compounds such as lycopene, polyterpene chemical compounds, other terpene alkaloid chemical compounds and the like. The escherichia coli base cell can remarkably facilitate the synthesis of the terpene chemical compounds.

The invention relates to an alpha-lauryl betaine type dimeric surfactant which is synthesized at a high yield through a reaction of alpha-halogenated aliphatic acid and binary tertiary amine. The synthesis reaction of the ampholytic ionic dimeric surfactant is a high-atom-economy reaction. The ampholytic ionic dimeric surfactant is short in synthesis route, easy and convenient to process, high in product yield and excellent in technological route synthesis performance. No corrosion or pollution is caused in the technological process, and no harmful compound is generated in the technological process, so that the synthesis technology is good in environmental friendliness. According to the method, raw materials are wide in source and low in cost, the technological route is short, production cost is low, and economy is good. The ampholytic ionic surfactant has extremely low critical micelle concentration and high capability for reducing surface tension and interfacial tension; the obtained product is excellent in lime soap dispersivity and can serve as a novel lime soap dispersant.

The invention relates to a fullerene combustion synthesis device which is safe, easy to control and low in cost, and has a certain yield. The device is provided with a combustion furnace, a burner nozzle, a telescope-feed condenser tube, a filtration tank, a liquid filter, a heat exchanger, a vacuum pump, a vacuum regulating system, an ignition system, a gas supply and control system and a vacuum degree testing and displaying device; wherein, the burner nozzle is fixed on a base plate of the combustion furnace; the telescope-feed condenser tube is connected with downstream of a furnace cover of the combustion furnace; the filtration tank is connected with the telescope-feed condenser tube by a vacuum quick release flange; the liquid filter is connected with a filter tube by a pipeline; the heat exchanger is connected with the liquid filter by the pipeline; the vacuum pump is connected with the heat exchanger by a vacuum ball valve; the vacuum regulating system is provided with an air vent valve and the vacuum ball valve, and the ignition system is connected with a furnace body; the vacuum degree testing and displaying device is communicated with the furnace body of the combustion furnace; and the gas supply and control system is connected with the burner nozzle by an air supply duct.

The invention relates to a method for constructing highly expressed trehalose synthase engineering bacteria by using a Pcry3Aa promoter. For a recombinant carrier, a Pcry3Aa-PhoD fragment by which a Pcry3Aa promoter fragment and a PhoD signal peptide fragment are connected by an overlap PCR (Polymerase Chain Reaction) is inserted at the upstream of a restriction enzyme cutting site BamHI of a shuttle plasmid PHT01, and a target protein trehalose synthase TreS fragment is inserted between two restriction enzyme cutting site, i.e., BamHI and AatII. The invention further relates to a method for constructing the highly expressed trehalose synthase engineering bacteria by using the recombinant carrier. According to the method disclosed by the invention, the Pcry3Aa promoter is adopted to naturally induce the synthesis of trehalose synthase; because the Pcry3Aa promoter contains a special STAB-SD structure, the stability of the Pcry3Aa promoter to transcribe mRNA is improved, the half-life period of mRNA is prolonged, the mRNA translation level of a downstream target gene is improved, and therefore the trehalose synthase is highly expressed.

The invention provides an in-vitro cell-free protein synthesis system and a kit and use thereof, and belongs to the technical field of protein synthesis. The in-vitro cell-free protein synthesis system based on a kluyveromyces lactis source is improved by adding exogenous L-arabinose, such that the protein synthesis capability of the system is remarkably improved. The invention further provides a more efficient and higher-throughput in-vitro protein synthesis kit and a synthesis method of a foreign protein. The provided improved method can be realized without molecular modification, is simple and convenient to operate and saves cost.

The invention discloses a preparation method of a carbon-titanium dioxide chromatography stationary phase with a shell-core structure and an application, relating to the preparation method of the stationary phase and the application. The preparation method can solve the problems that as the density of metal oxide microspheres is higher, the chromatography stationary phase taking a metal oxide as a matrix is very difficult to fill out a chromatographic column with high column efficiency through the homogenization method. The method comprises the following steps: adding prepared carbon spheres into TiO2 sol, carrying out ultrasonic treatment, standing, carrying out centrifugation, and then obtaining the carbon-titanium dioxide chromatography stationary phase with the shell-core structure which is used in capillary electrochromatography and high-performance liquid chromatography under the condition of N2 protection. The carbon spheres are taken as the matrix, and the carbon spheres have uniform particle size distribution, good appearance, large specific surface area and high strength. TiO2 high-performance particles are enriched on the surface of the obtained carbon-titanium dioxide chromatography stationary phase with the shell-core structure, and the carbon-titanium dioxide chromatography stationary phase has high surface activity and is resistant to high temperature and extreme pH; and the carbon-titanium dioxide chromatography stationary phase is used in the high-temperature high-performance liquid chromatography separation technology, and has good separation effect, high efficiency and strong repeatability.

The invention discloses a video frame synthesis method based on tensor, which solves the problems that the traditional low-rank completion video frame synthesis effect is worses and a neural network method needs a large number of training sets. The method comprises the following implementation steps of establishing a tensor-based video frame synthesis model, and synthesizing and converting a videoframe into a complementary tensor; decomposing the target tensor x; solving two decomposed tensors in a Fourier transform domain by adopting an alternating minimization method; and carrying out Fourier inversion on the two tensors, and multiplying the tensors to obtain a target tensor, i.e., recovering the video without the frame. According to the method, the video is regarded as the tensor, thevideo frame is regarded as a front slice of the tensor, the video frame is synthesized and converted into the complementary tensor, and a video synthesis result is obtained through solving in a transform domain. According to the method, more information of the missing frames is obtained, the detail effect is better, a large amount of data training is not needed, and the synthesis precision is higher. The method is used for recovering the frames lost by the video transmission, improving the video quality or predicting a future state of a target in the video.

Embodiments of the present disclosure disclose a face model processing method performed at an electronic device. The method includes the following steps: obtaining a three-dimensional face model corresponding to a user picture, and selecting a sample oral cavity model in an oral cavity model library for the three-dimensional face model; registering the sample oral cavity model into the three-dimensional face model by using an oral cavity position parameter in the three-dimensional face model; performing form adjustment on an oral cavity form of the registered sample oral cavity model by using an expression parameter of the three-dimensional face model to generate a target oral cavity model; and generating, based on the three-dimensional face model and the target oral cavity model, a three-dimensional face expression model corresponding to the user picture.