56results about How to "Improve composite quality" patented technology

The invention provides a universal and controllable radiation field enhancement method based on spatial perception. The method comprises the following steps: step 1, obtaining training data; 2, light rays and sampling points are generated according to the training data; 3, constructing a neural radiation field hybrid model; 4, inputting the coordinates of the sampling points and the direction of the light into the neural radiation field hybrid model constructed in the step 3, and calculating the volume density and color of each sampling point; 5, calculating an RGB color value of a pixel corresponding to each light ray; step 6, according to the volume density and color of each sampling point and the RGB color value corresponding to each light, training the neural radiation field hybrid model constructed in the step 3 to obtain a trained neural radiation field hybrid model; and step 7, using the trained neural radiation field hybrid model to render a two-dimensional picture under the view angle according to the camera pose of the new view angle, and completing universal and controllable radiation field enhancement based on spatial perception.

The invention provides a voice signal synthesis method and device, electronic equipment and a storage medium, and relates to the technical field of voice synthesis, the method predicts the amplitude spectrum and phase spectrum of a voice signal at a frame level, and avoids the periodic noise problem caused by an up-sampling structure with large calculation amount and transposition convolution. Moreover, according to the method, the frame-level fundamental frequency is obtained from the input voice signal Mel spectrum, the voiced sound frames and the non-voiced sound frames are determined, and the reference amplitude spectrum is generated in an energy information distribution mode, so that extra amplitude spectrum information can be provided for predicting the amplitude spectrum and the phase spectrum of the voice signal frame by frame, the prediction difficulty is reduced, and the prediction efficiency is improved. Therefore, the synthesis efficiency and quality of the voice signal are improved.

The invention discloses a model training method, an audio generation method, electronic equipment and a storage medium. The method comprises the following steps: acquiring a group of training data from a current training data set, the training data comprising source audio data and corresponding text data, and the source audio data comprising original acoustic features; inputting the original acoustic features and the text data into a generative network to generate target audio data; inputting the target audio data and the source audio data into an identification network, and determining a loss function; if the training end condition is met, taking the generation network as a sub-model, matched with the current sound source, of the audio generation model; and if the training end condition is not met, adjusting parameters of the generation network and the identification network according to the loss function, obtaining a group of training data from the current training data set again, and returning to execute the step of inputting the original acoustic features and the text data into the generation network to generate the target audio data. According to the scheme, audios with multiple timbres close to natural languages can be generated.

The present invention discloses a method and device for generating sound effects based on visual semantics, comprising: a visual feature extraction model, receiving a silent video to be simulated as an input, and being used for extracting visual features including color information and action information from the silent video; an acoustic model, connected to the output end of the visual feature extraction model, and being used for converting the visual features into acoustic features matching the visual features; and a vocoder, connected to the output end of the acoustic model, and being used for recovering a sound waveform from the acoustic model to obtain an audio file for the simulated sound.

The invention discloses a production method for synthesizing silicon nitride through granulation combustion, which comprises the following steps: raw material pretreatment: selecting high-purity silicon powder and nitrogen as main raw materials, carrying out fine screening and impurity removal treatment on the silicon powder, innovating a granulation process: preparing the treated silicon powder into spherical particle groups with specific particle sizes by adopting a novel spray granulation technology, through accurate control of spray parameters and intelligent combustion synthesis, granulated silicon powder particles are placed in an advanced reaction container, nitrogen is introduced, and the reaction container is equipped with an intelligent temperature and pressure control system, so that reaction parameters can be monitored and adjusted in real time, and efficient product collection can be realized; and collecting and cooling the synthesized silicon nitride by using a cyclone separation technology. Through the steps of raw material treatment, granulation process innovation, intelligent combustion synthesis and the like, silicon nitride is produced, the purity of the raw materials and the reaction stability are improved, energy consumption is reduced, waste is treated in an environment-friendly mode, and an advanced and reliable method is provided for silicon nitride production.

The present invention belongs to the technical field of silver-coated copper preparation, and discloses a wet synthesis method for preparing silver-coated copper, wherein a reaction tank, a conveying mechanism, an oven, a screening mechanism and a dryer cooperate to complete corresponding processing operations, an oven is arranged at the bottom of the reaction tank, the conveying mechanism is arranged in the inner cavity of the oven, and the dryer is fixedly mounted on the inner cavity bottom surface of the oven. The present invention makes the moist silver-coated copper powder in the feeding shell fall uniformly on the upper surface of the upper support plate through the connecting piece through the material laying pipe through the oven, through the coordinated design of the oven, the conveying mechanism, the drainage cavity and the connecting pipe, and can quickly and uniformly put the silver-coated copper powder into the oven, thereby improving the efficiency of silver-coated copper powder preparation, improving the practicality of the equipment, and avoiding the problem that when the operator manually places the silver-coated copper in the oven, it is inconvenient to evenly place the moist silver-coated copper powder, and the silver-coated copper powder is easily piled up, which reduces the drying efficiency and effect, and has low practicality.

The present invention belongs to the technical field of image data conversion, and provides a method and system for converting a face image into a sketch based on a generative adversarial network, wherein a face image is acquired; a face sketch image is acquired based on the acquired face image and a preset face sketch image conversion model; wherein the face sketch image conversion model is obtained by generative adversarial network training; a network residual block with a multi-scale structure is adopted in the training process of the face sketch image conversion model, and a self-attention module for parallel processing is added after the network residual block with a multi-scale structure; the present invention adopts a network residual block with a multi-scale structure in the training process of the face sketch image conversion model, and simultaneously adds a self-attention module for parallel processing, adopts a multi-scale method to learn deep and shallow features, and fuses feature maps of different categories, so as to improve the synthesis quality while maintaining the speed.

The present application relates to the technical field of auxiliary structure of cubic press, in particular to a temperature control device of cubic press, which is applied to cubic press, and the cubic press comprises six top hammers, each of which is provided with small and large pads, and a steel ring is detachably sleeved on the top hammer, the small and large pads and the top hammer; the temperature control device of cubic press comprises a cooling liquid pipe, each top hammer is provided with a cooling liquid pipe, both ends of the cooling liquid pipe pass through the small pad, and the cooling liquid pipe is detachably arranged on the steel ring, the cooling liquid pipe is configured to receive external cold liquid, thereby breaking through the heat transfer bottleneck of traditional indirect cooling of steel ring, so that the heat of the top hammer can be directly radiated through the cooling liquid pipe, while significantly reducing the interface thermal resistance and material thermal conductivity loss in the heat conduction path, the temperature stability of the superhard material synthesis process is ensured, and the synthesis efficiency and product quality are improved.

The invention discloses a nano powder preparation system based on arc plasma, and relates to the field of production of carbon nano materials and nano silicon nitride, in particular to a production process for synthesizing silicon nitride. At present, the problems that continuous production of nano materials is difficult, the oxygen content of products is high, the production process is difficult to control, and the structure of a production line is single exist, and the problems can be well solved by adding a negative pressure pumping air tightness detection device, a process device cooling pipe and a tail gas detection device. The invention also provides a device for effectively solving the problem of negative pressure in the device, further improving the problems of negative pressure detection and sealing performance detection in the device, and carrying out gas washing to ensure that only a small amount of air is left in the device, so that the product is not oxidized or is slightly oxidized, and the product with lower oxygen content and higher quality is obtained. The method is suitable for various plasmas or combined plasmas, can be used for preparing various nano materials, and is simple and diversified in production line.

The utility model provides a Raney nickel industrial synthesis system, the system comprises a Raney nickel synthesis kettle and an auxiliary system, the Raney nickel synthesis kettle comprises a stirrer arranged inside, a heat exchange jacket arranged outside, and an induced air exhaust port, an alkali liquor feeding port, an inert gas feeding port and a material feeding port which are respectively arranged at the upper part of the outer wall, the aerator is connected with the inert gas adding opening, the cooling liquid inlet and the discharging opening are formed in the lower portion of the outer wall, and the cooling liquid outlet is formed in the side portion of the outer wall of the heat exchange jacket. The auxiliary system comprises a pure water supply device, an alkali liquor adding pump, a constant-temperature heat exchanger, an inert gas source, an induced draft fan and a screw feeder which are respectively connected with the Raney nickel synthesis kettle, an alkali liquor preparation kettle connected with the pure water supply device, and a first three-way pipe and a second three-way pipe which are used for shunting. According to the raney nickel synthesis device disclosed by the utility model, the automation of the raney nickel synthesis process is realized through precise pipeline connection among the components and precise control on reaction conditions.

The invention relates to a green preparation process of an ezetimibe bulk drug, and belongs to the technical field of synthesis of drug intermediates. The invention provides a green preparation process of an ezetimibe bulk drug, which comprises the following steps: S1, mixing a compound as shown in a formula III, ZTM, TMSCl and a reaction solvent I at the temperature of below 0 DEG C, then sequentially adding diisopropylethylamine and titanium tetrachloride into a catalytic reaction system until a substrate is used up, quenching the reaction system, extracting the reaction system, washing an organic phase, and drying to obtain a compound as shown in a formula III; after 3 / 4 of the solvent is removed, N, O-bis (trimethylsilyl) acetamide is added for continuous reflux reaction, the solution is removed again after completion of the reflux reaction, cooling crystallization is performed to obtain a compound shown in a formula II, the compound shown in the formula II, a reaction solvent II and tetrabutylammonium fluoride are subjected to primary reaction, the solution of a reaction system is removed, then the compound is dissolved in isopropanol, diluted hydrochloric acid is added for reaction, crystallization is performed to obtain a crude product, and the compound shown in the formula II is obtained. And recrystallizing to obtain the ezetimibe bulk drug. The method integrally has the advantages of high product yield, mild reaction conditions, less by-products and environmental protection.

The invention provides a special fuel gas laminating machine for automobile leather. The special fuel gas laminating machine comprises a fuel gas compounding mechanism, a cooling mechanism and a second storage rack, the fuel gas compounding mechanism comprises a main body, a display screen is arranged on one side of the main body, three compounding rollers are vertically arranged on the upper part of the main body in sequence, and a driving motor is independently arranged at one end of each compounding roller; the second storage rack comprises a frame, the upper portion and the lower portion of the frame are each provided with a cross beam moving vertically, a plurality of temporary storage rollers are arranged on the cross beams, the diameter of each temporary storage roller is not smaller than 300 mm, and the distance between every two adjacent temporary storage rollers is not smaller than 800 mm. According to the invention, the three independently controlled composite rollers are arranged on the fuel gas composite mechanism, so that the composite quality of the soft fabric is ensured, and meanwhile, due to the arrangement of the second storage rack, the problem of the composited fabric caused by overlarge wrap angle is avoided.

The present invention discloses a raw material for pressure transmission and sealing medium for synthesis of six-sided top press, and a preparation method and application thereof, and belongs to the field of synthesis technology of six-sided top press. With pyrophyllite as raw material, by removing impurities, crushing, and detecting components, and comparing the formula requirements, aluminum, iron, titanium and other elements are added to it so that the composition ratio reaches the ideal requirements, and then through screening, mixing, fermentation, pressing, drying and other process treatments, a pressure transmission and sealing medium block for synthesis of superhard materials is prepared. The pressure transmission and sealing medium block prepared according to this formula has good pressure transmission, sealing and heat preservation properties, can significantly reduce the operating pressure of the six-sided top press equipment, the fluctuation of heating power, improve the stability of the synthesis internal cavity, improve the quality of superhard material products, and at the same time reduce the consumption of the top hammer and the loss of the equipment, and reduce the production cost of synthetic superhard materials. The selection range of pyrophyllite ore sources for the raw materials of the synthetic pressure transmission and sealing medium is expanded, and the risk and procurement cost of enterprises in dealing with the shortage of high-quality pyrophyllite resources are reduced.

The present invention discloses a photometric stereo image synthesis method, system, device, equipment and storage medium. The method comprises: obtaining a moving pulse signal obtained by a trigger input circuit to collect a measured object; performing signal processing on the moving pulse signal to obtain a collection drive signal and a light source drive signal; sending the light source drive signal to the light source drive circuit, so that the light source drive circuit generates at least two light source angles of the light source brightness irradiating the measured object according to the light source drive signal; sending the collection drive signal to the image sensor, so that the image sensor performs image collection of the measured object under at least two light source angles according to the collection drive signal, and obtains and feeds back at least two images of the measured object under different light source angles; generating at least one photometric stereo synthesis image for representing the image stereo information based on the image grayscale information of the measured object images under different light source angles and a preset image decomposition method.

The utility model relates to the technical field of solvent-free compositing, in particular to a solvent-free coating compositing system which comprises a support, the support comprises a first coating seat, a second coating seat, a third coating seat, a compositing seat and an unwinding support, a first coating device is arranged on the first coating seat, a second coating device is arranged on the second coating seat, and a second coating device is arranged on the third coating seat. The second coating device is used for uniformly coating a second coating medium on a second base material surface in a dotted manner or a linear manner, a scraper mechanism is arranged on one side of the second coating device, a trough is arranged below the second coating device, a third coating device is arranged on the third coating seat, and the third coating device is used for coating the second coating medium on the second base material surface in a dotted manner. A first compounding mechanism, a winding mechanism and a winding compression roller which is in sliding fit with the winding mechanism are arranged on the compounding seat, and an unwinding mechanism is arranged on the unwinding bracket. The problems that an existing bi-component structural adhesive is difficult to mix uniformly, adhesive coating is not uniform, the adhesive coating amount cannot be accurately controlled, and then the compounding effect of a base material is affected can be solved.

The invention discloses a plate turning compound machine for composite plate production, and relates to the technical field of composite plate production. Comprising a frame body which is fixedly connected with a supporting rod; the deflection shaft is rotationally connected to a supporting rod on the frame body; the turning plate frame is fixedly connected to the deflection shaft; the mounting parts are arranged at intervals and are all mounted on the turning plate frame; the multiple suction cups are arranged at intervals and installed on the adjacent installation pieces correspondingly; the driving mechanism is arranged on the frame body and is used for enabling the deflection shaft to rotate relative to the frame body; and the limiting mechanism is arranged on the frame body. According to the invention, the substrates and the plate turnover frame slide relatively, so that the colloid between the two substrates is rubbed in the contact and fitting process of the two substrates, the colloid is promoted to be redistributed and flow between the two substrates, the colloid can cover the whole bonding surface more uniformly, surface bubbles are eliminated at the same time, and the compounding quality of the composite plate is further improved.

The utility model relates to the technical field of chemical equipment, in particular to a clay stabilizer synthesis reaction kettle which comprises a reaction kettle body, a temperature control mechanism, a stirring mechanism and a feeding and discharging mechanism, the inner wall of the reaction kettle body is of a double-layer structure, a placing hole groove is formed in the inner wall of the reaction kettle body, and the temperature control mechanism is arranged in the placing hole groove. The temperature control mechanism and the stirring mechanism are fixedly connected into the reaction kettle body. According to the utility model, through the arrangement of the circulating cooling water pipe, the spiral heating pipe and the temperature sensor, the temperature sensor can monitor the temperature in the reaction kettle in real time and transmit a signal to the controller, and the controller accurately controls the spiral heating pipe to heat or the circulating cooling water pipe and the condenser to cooperatively work for cooling according to a set temperature value; the reaction is always carried out at a proper temperature, the synthesis quality and efficiency of the clay stabilizer are improved, the strict requirements of different reactions on the temperature are met, the temperature can be accurately controlled, and the problem of unstable product quality caused by temperature fluctuation is greatly reduced.

The utility model relates to the technical field of metal purification, and discloses a feeding device which comprises a reaction kettle, a material bearing mechanism and a supporting piece, the reaction kettle comprises a kettle body, a first sealing cover and a second sealing cover, the kettle body is provided with a reaction cavity, and the upper part of the kettle body is provided with a feeding hole and an inlet / outlet; the material bearing mechanism comprises a hanging basket, a connecting piece and a hoisting piece, the hanging basket is arranged in the reaction cavity, the hanging basket is provided with a containing groove, the lower end of the connecting piece is connected to the hanging basket, and the hoisting piece is connected to the upper portion of the connecting piece and located in the inlet and outlet; the supporting piece is fixedly connected to the inner wall of the reaction cavity and supports the hanging basket; according to the utility model, through the inlet / outlet, the second sealing cover, the connecting piece and the hoisting piece, the solid material can be uniformly put into the accommodating groove of the hanging basket, so that the homogeneous reaction between the solid material and the liquid material in the reaction cavity is facilitated, and the synthesis quality of the composition is improved.

The invention discloses an MRI (Magnetic Resonance Imaging)-PET (Positron Emission Tomography) medical image synthesis method and device, and the method comprises the steps: constructing a forward modal attribute decoupling mechanism: decoupling a corresponding appearance vector and an anatomical structure vector from an MRI modal image and a PET modal image, and synthesizing the PET modal image through the appearance vector of the PET modal image and the anatomical structure vector of the MRI modal image; constructing a backward modal attribute decoupling mechanism: learning distribution of appearance vectors of PET modal images by using Gaussian vectors, and guiding MRI to PET medical image synthesis by using the Gaussian vectors as the appearance vectors of the PET modal images in a test stage; and designing a diagnosis-oriented modal attribute optimization strategy: predicting more accurate diagnosis information by effectively polymerizing complementary disease-related information between the MRI and the PET modal image so as to guide the network to synthesize a high-quality PET modal image. The device comprises a processor and a memory. According to the method, modal attribute information contained in different imaging modes is fully mined to guide the network to synthesize a high-quality PET modal image.

The invention relates to the technical field of metal compounding, in particular to a preparation method of a copper-titanium composite belt and the copper-titanium composite belt. The preparation method comprises the following steps: grinding a bonding surface between a copper plate and a titanium plate; and heating the copper plate and the titanium plate to enable the temperature of the copper plate to reach a first temperature and the temperature of the titanium plate to reach a second temperature. According to the preparation method, a copper plate and a titanium plate are respectively heated to a first temperature and a second temperature; in order to mutually compound a copper plate and a titanium plate, the temperature of a crystallization critical point set by a process needs to be reached, and the copper plate can be softened or warped in a high-temperature environment, so that excessive stress is generated in the copper plate, and the mutual compounding quality of the copper plate and the titanium plate is influenced. The copper plate and the titanium plate are respectively controlled at different temperatures, so that the two plates respectively reach proper temperatures, and the interfaces of the two materials are deformed through local deformation stress, so that the effect of better combining the interface layers is achieved, and the copper-titanium composite belt with the characteristics of higher strength and better conductivity is further obtained.

The utility model discloses a cutting mechanism for an inner liner of a tire, and belongs to the technical field of tire manufacturing. The tire airtight layer cutting mechanism comprises two cutting assemblies, a width adjusting assembly, a deviation rectifying assembly, a mounting plate and a cutting roller. Each cutting assembly comprises a cutter, a cutting swing rod, a cutter support, an air cylinder and an air cylinder installation frame, the cutter is installed at one end of the cutting swing rod and can freely roll along with a bearing on the cutting swing rod, the cutting swing rod is hinged to the cutter support, the air cylinder installation frame is connected to the side face of the cutter support, and the air cylinder is installed on the air cylinder installation frame. The hinged points of the air cylinder and the cutting swing rod are located on the two sides of the cutter support, and the air cylinder is connected with the air cylinder installation frame. According to the cutting mechanism for the tire inner liner, the cutter can be automatically adjusted in the deviation rectifying process, and the cutter can be well adjusted and kept fixed before cutting. The compounding quality of the two layers of materials is guaranteed, material waste caused by badness is reduced, manual intervention is reduced, and then the production efficiency is improved.

This utility model relates to the technical field of tape laminating equipment, specifically to a fiber-reinforced tape laminating equipment, including a frame. One end of the frame is equipped with a tape feeding roller and a fiber feeding roller, and the other end is equipped with a discharge roller. From one side of the tape feeding roller and the fiber feeding roller to the discharge roller, the frame is sequentially equipped with a guiding mechanism, a sorting mechanism, and a laminating adhesive coating mechanism. This utility model, by incorporating a cleaning roller and a cleaning brush in the guiding mechanism, can effectively remove dust and impurities from the tape surface, improving lamination quality. The fiber-sorting roller in the sorting mechanism allows the fibers to be neatly arranged after a long rotational lamination process, enhancing the strength and stability of the tape. The scraper, electric telescopic rod, and scraper frame in the laminating adhesive coating mechanism enable uniform application of the adhesive and allow for flexible adjustment of pressure and adhesive application amount according to production needs, improving the equipment's adjustability and applicability.

The utility model relates to the technical field of gallium arsenide synthesis, and discloses a gallium arsenide polycrystal synthesis device. Comprising a reaction piece, a sealing piece, a first boat body, a second boat body, a third boat body and vacuum equipment, the reaction piece comprises a first reaction part, and the first reaction part is provided with a first cavity; the synthetic furnace is provided with a heating cavity, and the first reaction part is arranged in the heating cavity; the first boat body is arranged in the first cavity; the second boat body is arranged in the first cavity and located above the first boat body, the second boat body is used for bearing crops, and a plurality of filtering holes are formed in the second boat body; according to the utility model, the second boat body with the filter holes is arranged above the first boat body, so that gallium oxide in the gallium material can be filtered, and the gallium oxide in the gallium material is reduced, thereby being beneficial to improving the synthesis quality of gallium arsenide polycrystals.

The present invention discloses a sealed high-throughput, efficient, fully automatic biosynthesis device, which includes a moving plate that performs horizontal linear motion, a plurality of synthesis chamber units that are fixed below the moving plate and form an upper opening on the moving plate, a sealing plate assembly that is located above the moving plate and forms a sealed space with the moving plate through up and down motion, a sample loading unit fixed on the sealing plate assembly, and a plurality of pressurized sealing units that are fixed on the sealing plate assembly and seal the upper opening, wherein the moving plate is driven by a driving member to move between the sample loading unit position and the pressurized sealing unit position. The present invention realizes the automatic addition of sample amount and the automatic transfer of primers to the sealed reaction chamber during the synthesis reaction of large-scale ultra-trace biological samples, and performs automatic pressurization and pressure maintenance, and precisely controls the pressure and synthesis speed required for synthesis, thereby greatly improving the efficiency of biosynthesis.

A touch screen master controller is arranged on the front side of a reaction box, a heat exchange aluminum plate is arranged in the reaction box, a micro-fluidic chip is arranged on the heat exchange aluminum plate through an inserting frame mechanism, a heat exchange coil pipe is embedded below the heat exchange aluminum plate, a heat exchange energy storage water tank is arranged on the rear side of the reaction box, and a temperature sensor and a pressure sensor are arranged in the reaction box. An intelligent control injection mechanism is arranged above the reaction box; according to the utility model, a micro-fluidic technology is used as a reaction control technology, so that the material mixing uniformity, the heat conduction efficiency, the synthesis efficiency and the product quality can be effectively improved, waste heat generated in the synthesis process can be effectively recovered and reused by arranging the heat exchange structure, and the production cost is reduced. And the flexibility and adaptability of production are improved through cooperation of multi-group independent control of the material injection mechanism and detachable modularization of all the structures, so that the synthesis requirements of different types of core materials are met.

The invention provides full-automatic oligonucleotide synthesis equipment which comprises a pipeline liquid feeding system, a reaction system and a control system, the pipeline liquid feeding system comprises a pumping module, a moving module and a liquid injection module, the liquid injection module is installed on the moving module, the moving module is constructed to enable the liquid injection module to move in a three-dimensional mode, and the pumping module is connected with the reaction system. Liquid is injected into the reaction system; the control system is in communication connection with the pipeline liquid feeding system and the reaction system and is used for controlling liquid feeding and reaction; the equipment preferably further comprises a non-pipeline liquid feeding system, the non-pipeline liquid feeding system comprises a liquid moving device, and the liquid moving device is preferably installed on the moving module and used for injecting liquid into the reaction system. The invention also provides a method for synthesizing oligonucleotide by using the full-automatic oligonucleotide synthesis equipment. The full-automatic oligonucleotide synthesis equipment is high in automation degree, suitable for synthesis of oligonucleotides of different scales, high in synthesis quality and high in efficiency.

The invention discloses a multi-sound-source binaural audio synthesis method based on position prompt, relates to the technical field of audio processing, and solves the technical problem that high-quality binaural audio cannot be directly generated from unprocessed multi-sound-source mixed monaural signals in the prior art. The method comprises the steps that a position prompt p used for specifying the expected spatial position of a target sound source is given, a monaural input signal is modeled into a voice and non-voice mixed signal, then a binaural signal is synthesized through a parameterized function of a neural network architecture, the position prompt p = {r, theta} defines the position of a non-voice sound source in a polar coordinate system, and the position prompt p is used for specifying the expected spatial position of the target sound source. R and theta respectively represent the distance and direction of the sound source relative to the listener; according to the method, by adopting an end-to-end unified neural network architecture, the problem of accumulated distortion in a traditional separation-rendering cascade method is fundamentally avoided, and the binaural synthesis quality in a multi-sound-source mixed audio scene is remarkably improved.

The invention belongs to the technical field of medicine synthesis processes, and particularly provides a preparation method of ipratropium bromide, one-pot synthesis is adopted, separation operation is not needed in the process, lithium tert-butoxide is adopted as a reaction raw material, the total yield of a reaction route and the purity of a product are remarkably improved, the purity of the prepared ipratropium bromide product can reach 99.95% or above, and the yield of the ipratropium bromide product can reach 99.95% or above. The method has the advantages of short production period, less output of three wastes, environmental protection, high process safety, low production cost, simple operation, mild reaction conditions, high purity and high yield, and is suitable for industrial production.

The invention provides a trapezoidal vertical strip type composite blank and a welding method thereof.The trapezoidal vertical strip type composite blank comprises a lower base plate, the cross section of the lower base plate is rectangular, trapezoidal connecting vertical strips are welded to the edges of the periphery of the top of the lower base plate in a sealed mode, and a compound plate is arranged at the top of the lower base plate and located between the opposite sides of the four trapezoidal connecting vertical strips; an upper base plate is welded to the tops of the four trapezoidal connecting vertical strips in a sealed mode, and the lower base plate and the upper base plate are welded and fixed in a submerged arc welding mode. By means of the special design of the trapezoid connecting vertical strips, sealing welding after the lower base plate and the specially-designed trapezoid connecting vertical strips are assembled, and subsequent submerged-arc welding and vacuumizing, it can be effectively guaranteed that the situation that the base plate is oxidized due to the welding heat influence of submerged-arc welding can be effectively avoided, and therefore the composite quality during rolling is improved, the mechanical property is more excellent, and the service life of the base plate is prolonged. And it is effectively guaranteed that cracking is avoided during rolling, the yield of the composite plate is increased, the bonding quality is improved, and waste of precious metal is reduced.

The invention discloses a video image synthesizing and editing method and system, and the method comprises the following steps: obtaining a first material which is an image containing an alpha channel or a video with a video frame containing an alpha channel; obtaining a second material, wherein the second material is an image or a video; detecting a transparent area of a first material according to the alpha channel; adjusting the size of the second material according to the information of the transparent area; and taking the second material of which the size is adjusted as an embedding material, embedding the embedding material into the transparent area of the first material, and storing the synthesized video. The system can automatically adjust various parameters in the synthesis and editing process, reduces tedious operation of manual adjustment, improves the intelligent level of processing, achieves efficient synthesis of multiple videos, improves the efficiency and quality of video and image manufacturing, and has high applicability.