16results about How to "The method is simple and efficient" patented technology

The invention provides an agilawood rapid lossless authenticity identification method based on microscopic imaging and an electronic nose, the method is based on an agilawood authenticity identification model of microscopic images and an agilawood authenticity identification model of smell, and the method comprises the following steps: S1, adopting a microscope and an imaging system to obtain an agilawood detection sample microscopic structure image; s2, inputting the microscopic structure image of the agilawood detection sample into an agilawood authenticity identification model based on the microscopic image; s3, according to the smell-based agilawood authenticity identification model, obtaining data of the agilawood detection sample in each sensor of the electronic nose; s4, starting an automatic mode recognition system of the electronic nose, and recognizing data of the smells of the electronic nose in 40s, 50s and 60s of the agilawood detection; the method disclosed by the invention is simple, convenient and efficient, is simple to operate, does not need to pre-treat a sample, solves the problems of subjective influence and poor repeatability during traditional artificial evaluation, and greatly improves the authenticity identification precision of the agilawood.

The invention relates to the technical field of disassembly, assembly and maintenance of engine parts, in particular to a multi-purpose drawing device and a drawing method.The first aspect is that the multi-purpose drawing device comprises an electric main body structure and a telescopic supporting arm, the electric main body structure comprises a linear motor and the telescopic supporting arm, and a threaded conversion rod is arranged at the end of the linear motor; more than two telescopic supporting arms for supporting are arranged on the periphery of the threaded conversion rod in parallel; each adapter is used for disassembling one to-be-disassembled structure, one end of each adapter is provided with a universal internal threaded hole, the universal internal threaded holes are connected with threaded conversion rods in a matched mode, and the other structures of the adapters are used for being connected with the to-be-disassembled structures in a clamped mode. On the second aspect, the invention further discloses a drawing method based on the multipurpose drawing device. According to the multi-purpose drawing device and the drawing method, the electric main body structure and a plurality of adapters are adopted, so that the disassembly work of various to-be-disassembled structures can be efficiently completed without damaging a peripheral structure.

The invention belongs to the technical field of membrane separation, and relates to a preparation method of an efficient antibacterial microfiltration membrane for a biopharmaceutical process, a composite additive system is introduced into a membrane casting solution, a modifier is added, the modifier comprises a composite alcohol pore-foaming agent and an antibacterial agent, the membrane casting solution is coupled, and a high-throughput antibacterial membrane is obtained through cooperation of membrane preparation processes. The antibacterial agent can enhance the effect of the composite alcohol pore-foaming agent, assists in membrane pore size regulation and control and fixes the membrane structure, and through the synergistic effect of the composite alcohol pore-foaming agent and the antibacterial agent, the selective permeability is improved while the microfiltration membrane maintains high antibacterial performance, and selective separation of microorganisms of different sizes is achieved. The membrane is expected to be a potential candidate in a biopharmaceutical sterile filtration process.

A direct current partial discharge signal defect classification method, system, device and medium based on time-frequency feature map visualization analysis optimization comprises the steps of performing first preprocessing on partial discharge original signal data, and dividing the data into a training set, a test set and a verification set; inputting the training set and the verification set into a ResNet-18 classification model for training, and screening three types of key samples based on an output prediction result; constructing an incremental data set according to the three types of key samples; respectively inputting the incremental data set and the combination of the incremental data set and the training set into a ResNet-18 classification model in sequence for secondary training; carrying out the second preprocessing of the to-be-detected partial discharge original signal data, inputting the to-be-detected partial discharge original signal data into the ResNet-18 classification model after the secondary training, and outputting a defect classification result; and secondary training of the ResNet-18 classification model is carried out by using an incremental data set constructed by the three types of key samples, so that the model focuses on learning samples with fuzzy features, high inter-class similarity or located near a decision boundary, and the discrimination capability and prediction precision of the model on complex samples are effectively improved.

The invention provides a highly amorphous carbon material prepared based on small organic molecule charring and application, and belongs to the technical field of material preparation, and the highly amorphous carbon material is prepared by the following steps: uniformly mixing small organic molecule powder and metal with strong reducibility according to a calculated mass ratio to obtain a mixture; based on an inert atmosphere, the mixture and grinding balls are loaded into a ball milling tank according to a set mass ratio, and then the ball milling tank is loaded into a ball mill for mechanical ball milling treatment; the carbon content of the highly amorphous carbon material derived based on the small organic molecules is greater than 90%, d002gt; the wavelength is 0.385 nm, and the wavelength is Lat; the wavelength is 4.0 nm, Lclt; 1.5 nm, ID / IGgt; 1.80, 1.80; the specific surface area is greater than 150m < 2 > g <-1 >. The problem that small organic molecules are difficult to directly convert into a carbon material is solved through a mechanical ball milling method and a mechanical force induced chemical reaction, and the obtained highly amorphous material has rich defect sites and has excellent capacitive performance when being used as an electrode material of a supercapacitor.

This invention belongs to the field of biotechnology, specifically relating to a method for non-invasively infecting Trichogramma wasps using artificial hosts. Wolbachia The method involves first preparing artificial host egg cards, then infecting... Wolbachia Biological materials were inserted into artificial host egg cards, and finally, uninfected eggs were inserted. Wolbachia The parasitism of Trichogramma wasps is sufficient. Compared to microinjection, this method is more convenient and efficient; moreover, the open system with operable artificial hosts allows for the artificial inoculation of Trichogramma wasps with eggs from other insect sources besides parasitoid wasps. Wolbachia It provided a possibility.

The invention relates to the technical field of surgical biomedical materials, and provides a method for maintaining tissue activity by hydrogel, which comprises the following steps: S1, dissolving a photo-crosslinkable natural polymer material in a solvent, and standing to obtain a first mixed solution; s2, adding a photo-initiation cross-linking agent into the first mixed solution to obtain a photo-curing adhesive precursor solution; s3, pouring the photocuring adhesive precursor solution into a pore plate mold to enable the volume of the photocuring adhesive precursor solution to be matched with the size of the tissue; and S4, completely immersing the tissue into the photocuring glue precursor solution, and carrying out photocuring by adopting in-situ light irradiation to obtain the hydrogel wrapping the tissue. The hydrogel has the advantages that the hydrogel has excellent tissue fixing performance and biocompatibility, and the original activity of a sample is kept for slice preparation under the condition that the tissue sample is not dehydrated and inactivated.

The invention belongs to the field of laser cladding and surface engineering, and particularly relates to ceramic particles for laser cladding and a preparation method and application of the ceramic particles. The method comprises the following steps: pretreating ceramic particles, sensitizing the ceramic particles in a tin ion solution, activating the ceramic particles, and depositing a Ni-P coating layer to obtain the ceramic particles for laser cladding. When the ceramic particle for laser cladding is used for aluminum alloy laser cladding repair, particle-matrix wettability and interface metallurgical bonding can be remarkably improved, generation of non-wettability, incomplete fusion and pore defects is reduced, and therefore the compactness and bonding strength of a cladding layer are improved, the agglomeration, sinking and incomplete fusion defects are restrained, and the service life of the cladding layer is prolonged. And the compactness, microhardness, wear resistance and corrosion resistance of the coating are improved. The method has the advantages of mild process, high applicability and easiness in batch production and field repair popularization, and is suitable for surface strengthening and remanufacturing repair engineering of various ceramic / metal combinations.

The invention relates to the technical field of lanthanum carbonate determination, in particular to a quantitative determination method for two impurities of basic lanthanum carbonate in a lanthanum carbonate octahydrate bulk drug. The two impurities of basic lanthanum carbonate are a basic lanthanum carbonate crystal form I and a basic lanthanum carbonate crystal form II, and the determination method comprises the following steps: determining quantitative characteristic peaks of the two impurities of basic lanthanum carbonate by using an XRPD method, mixing the two impurities of basic lanthanum carbonate and lanthanum carbonate octahydrate to prepare mixed powder, detecting the mixed powder by using the XRPD method, and determining diffraction data of the two impurities of basic lanthanum carbonate. The method is good in linear relation, low in detection limit, high in sensitivity and easy to operate.

The invention discloses a method for determining the morphology of a vertical free outflow gas-liquid interface of a large-diameter pressure water delivery system, and belongs to the technical field of flow calculation of large-diameter pressure water delivery systems. Comprising the following steps: determining characteristic parameters describing vertical free outflow; establishing a coordinate system on the circular section of the vertical free outflow outlet; an appearance extreme value coefficient phi is introduced, and the maximum join height Hmax of a gas-liquid interface of large-diameter vertical free outflow is calculated; an appearance distribution coefficient delta y is introduced, and the distribution rule of the gas-liquid interface water height is determined; calculating the change of the water level rise along with y on the cross section of the vertical free outflow outlet x = 0 by using the appearance extreme value coefficient phi and the appearance distribution coefficient delta y; calculating the change of the water level along with x when y is equal to y0 on the cross section; and a diffusion flow factor a and a water-up flow factor b are introduced to calculate the internal flow characteristic hf of the vertical free outflow. The method can quickly and accurately estimate the appearance and the internal flow characteristics of the water-gas interface of the outlet section, and is simple, convenient and efficient.

This invention relates to the field of tobacco processing technology, specifically a method for determining the penetration rate of exogenous additives in tobacco leaves, comprising the following steps: 1) tobacco leaf pretreatment; 2) sample loading of tobacco leaves and exogenous additives: tobacco leaves and exogenous additives are placed in two thin-film mixing tanks, one for experimental groups and one for control groups; 3) application of exogenous additives; 4) heat detection: a calorimeter is used to detect and record the heat changes throughout the entire process, including the application of the exogenous additives to the tobacco leaves, their penetration into the tobacco leaves, and their reaction with reactants in the lower tank after passing through the tobacco leaves; 5) calculation of the penetration rate. The advantages of this invention are: by accurately detecting the heat changes of exogenous additives during the penetration process in tobacco leaves, the penetration rate of tobacco leaves can be characterized in real time and dynamically. It is applicable to the detection of the penetration rate of different types of exogenous additives in tobacco leaves, has a wide range of applications, and is simple and efficient.

The invention discloses a method for constructing a mechanical anisotropic product as required based on an FDM (fused deposition modeling) technology, and the method comprises the following steps: S1, printing a self-healing polyurethane material by adopting a fused deposition modeling printer at a filling rate of 20-100% to obtain a 3D printed product; and S2, the 3D printing product is subjected to heat treatment. The mechanical anisotropy of the 3D printing product in all directions is precisely regulated and controlled, the anisotropy meets the preset requirement, the method is simple, convenient and efficient, the problem that in the prior art, undesirable anisotropy occurs in the printing product construction process through the FDM technology is solved, and the application range of the FDM technology in the novel functional field is effectively widened.

The application discloses a multi-mineral rock structure modeling method, device and equipment, relates to the field of rock mechanics, and can model large-scale rock materials with multiple minerals. The method comprises the following steps: detecting the mineral composition of a target rock to obtain the component proportion of multiple mineral components contained in the target rock, determining the anisotropy representation parameter corresponding to the target rock, and the target fractal dimension and target hourglass parameter corresponding to the multiple mineral components; constructing a rock model of the target rock by adopting a bubbling method according to the anisotropy representation parameter and the component proportion; calculating the specified fractal dimension and specified hourglass parameter corresponding to the multiple mineral components in the rock model, and calculating the first difference between the specified fractal dimension and the target fractal dimension and the second difference between the specified hourglass parameter and the target hourglass parameter; and obtaining the target model when the first difference hits a first preset range and the second difference hits a second preset range.

The present application belongs to the field of electrostatic protection and electromagnetic compatibility technology, and in particular, relates to a method for simulating and evaluating the discharge effect of an aircraft electrostatic discharger. The method for simulating and evaluating the discharge effect of an aircraft electrostatic discharger of the present application uses electromagnetic modeling and simulation methods to carry out an evaluation of the effect of an aircraft electrostatic discharger, is not limited by the development progress of the electrostatic discharger and the production of test pieces, and can perform a large number of iterative optimizations on the electrostatic discharger design at a very low cost; the method is applicable to all fixed-wing aircraft platforms, and belongs to the verification of the discharge effect of the entire aircraft after the electrostatic discharger is installed, and can be used as a basis for evaluating the electrostatic protection design of the entire aircraft.

This invention discloses a pressure testing device, a tobacco slurry preparation system, and its applications. The pressure testing device includes a loading mechanism, an automatic pressing unit, a control system, and a pressure sensing mechanism. The loading mechanism contains loose tobacco material, which is pressed to form tobacco slurries. The automatic pressing unit is connected to the loading mechanism and is driven by the control system to press the loose tobacco material within the loading mechanism. The pressure sensing mechanism measures the pressure exerted on the loose tobacco material during the pressing process. Before preparing samples of loose tobacco with unknown properties, the pressure testing device is used to investigate the control parameters for the tobacco slurry preparation process. Experimental tobacco slurries are obtained by pressing the loose tobacco material using the pressure testing device to determine the sample preparation control parameters for achieving uniform density distribution of the material. Then, using the obtained sample preparation control parameters, a different preparation device is used to obtain tobacco slurries for measuring thermophysical parameters.

The invention provides a device and a method for regulating and controlling the in-situ performance of a composite material in three-dimensional photocuring. Real-time regulation and control on the microstructure orientation of the composite material can be realized in the photocuring 3D printing process. The existing photocuring additive manufacturing technology is improved, a set of microscopic particle orientation control system is integrated in the photocuring forming process, and the system is mainly composed of a scraper which can rotate by 360 degrees in a plane and can move in any direction. The microscopic particles are forced to be arranged in the moving direction of the scraper through shear stress formed by the scraper on the liquid resin in the moving process, and the purpose of controlling the orientation of the microscopic particles is achieved. According to the method, the performance of the composite material is regulated and controlled layer by layer in the photocuring process, so that personalized customization of structure and function integration of a printed product is achieved, and the method is based on a mature photocuring additive manufacturing technology, can be matched with an existing photocuring machine and has good compatibility.