19results about How to "Ensure purity" patented technology

This invention discloses a samarium-lanthanum co-doped calcium oxyborate yttrium nonlinear optical crystal material, its preparation method, and its applications. The samarium-lanthanum co-doped calcium oxyborate yttrium nonlinear optical crystal material belongs to the monoclinic crystal system, has a space group of Cm, and a chemical formula of Sm. 0.3 La 0.1 :Y 0.6 Ca4O(BO3)3 has a second harmonic response intensity of 0.89 × KDP, and exhibits transmittance exceeding 80% in the 500–1000 nm and 1600–2400 nm wavelength ranges. It also has a strong absorption peak in the 1000–1600 nm wavelength range. Therefore, the samarium-lanthanum co-doped calcium oxyborate yttrium nonlinear optical crystal can be considered as a nonlinear optical crystal material with broad application prospects in the field of optics.

The utility model discloses a miniature nectar collection device with multi-specification capillary, which comprises: multi-specification collection modules, power control modules and detachable nectar collection modules connected vertically in sequence; the power control module comprises: a power pump and a control assembly, the power pump is used to deliver the nectar collected by the collection module to the collection module, and the control assembly is used to regulate the working state of the device; the detachable nectar collection module is used to collect the nectar delivered by the power pump; the multi-specification collection module comprises: a hollow rotating drum, a plurality of sliding blocks and a plurality of multi-specification capillary tubes, one end of the rotating drum is movably connected to the power control module; the inner wall of the rotating drum is fixed with a capillary tube mounting rack, the plurality of multi-specification capillary tubes are vertically mounted on the capillary tube mounting rack, one end of the plurality of sliding blocks is connected to the capillary tubes one by one, the lateral wall of the rotating drum is provided with a sliding groove for the sliding blocks to slide in the vertical direction, and the other end of the sliding blocks is mounted in the sliding groove. The device realizes efficient, clean, portable and adjustable collection of nectar.

The utility model relates to a dilution tank for vitamin B12 injection production, which comprises a tank body, a sealing cover installed on the top of the tank body, a liquid inlet arranged on one side of the top of the tank body, a water inlet arranged on the other side of the top of the tank body, a liquid outlet arranged at the bottom of the tank body, a first filter element installed in the liquid inlet and extending into the tank body, a second filter element installed in the liquid outlet, an L-shaped liquid discharge pipe installed at the bottom of the liquid outlet, a corrugated flexible pipe arranged on the vertical section of the liquid discharge pipe, the second filter element arranged in the corrugated flexible pipe, a hanger connected with the liquid discharge pipe arranged at the bottom of the tank body, a safety valve and an ultrasonic liquid level sensor installed on the top of the sealing cover, a temperature sensor arranged on the inner wall of the tank body, a pressure sensor arranged on the bottom of the inner wall, a plurality of sampling valves arranged on one side of the tank body from top to bottom, and magnetic stirrers arranged on both sides of the bottom of the tank body and symmetrical to the liquid outlet. The utility model adds a filtering function, thereby improving the purity and production safety of the liquid medicine.

The invention discloses a lanthanum ion doped oxygen calcium yttrium borate nonlinear optical crystal material and a preparation method thereof, the lanthanum ion doped oxygen calcium yttrium borate nonlinear optical crystal material belongs to a monoclinic system, the space group is Cm, the chemical formula is La0.1: Y0. 9Ca4O (BO3) 3, the frequency multiplication coefficient is 2 * KDP, the ultraviolet cut-off edge is less than 200 nm, and no absorption peak with the intensity greater than or equal to 0.2 cm <-1 > exists in the range of 200-2500 nm. Therefore, the lanthanum ion doped yttrium calcium oxide borate crystal can be used as a nonlinear optical material with a wide application prospect in the field of optical parameter chirped pulse amplification.

The application relates to the technical field of industrial anomaly detection, and discloses a rotation-invariant multi-prototype industrial anomaly detection method, which comprises the following steps: S1: obtaining an industrial image to be processed and a corresponding defect region frame-level label, and constructing a foreground mask and a background mask based on the frame-level label; S2: inputting the industrial image into a pre-trained feature extraction network, obtaining an initial feature map, and performing channel mapping and normalization processing on the initial feature map to obtain a normalized feature map; and S3: rotating the normalized feature map at least two different angles to obtain a feature map in each rotation direction. The rotation-invariant multi-prototype industrial anomaly detection method is based on a feature extraction network pre-trained on a large-scale data set, can make a heat map generation module converge only through a small number of training rounds, does not need to train a complex model from the beginning, and greatly reduces data demand, computing resource and training time cost.

The application relates to the field of MEMS sensors and discloses a factory calibration method for humidity drift of a MEMS sensor in outdoor cold-state measurement, which comprises the following steps: S1, high-humidity environment construction and natural attenuation, and S2, dynamic data synchronous acquisition.In the application, a calibration environment without vibration interference and with natural humidity change is constructed, so that the technical problem of a traditional constant-humidity box calibration method is fundamentally solved, the coupling interference of equipment vibration such as a fan and a compressor on the output signal of the MEMS sensor is completely eliminated, the purity and authenticity of the drift data are ensured, the calibration coefficient can accurately reflect the physical correlation between humidity and the sensor output, and secondly, the natural attenuation process of humidity simulates natural scenes such as day-night cycles and weather changes experienced by the sensor in actual outdoor application, and there is an essential difference between the continuously changing humidity path and the constant-humidity box step-by-step stable control, so that the humidity drift coefficient calibrated has stronger generalization ability and compensation applicability in actual working conditions.

This invention belongs to the field of image data processing technology, specifically relating to a method and system for monitoring the quality of laser welding of aluminum single-panel panels. The method includes: extracting the centroid displacement of the weld pool in the aluminum single-panel welding process and denoising it to obtain an oscillation velocity sequence; constructing a state vector through phase space reconstruction and calculating the trajectory deformation degree accordingly; calculating the maximum distortion threshold by combining real-time laser power, welding speed, and duration; comparing the trajectory deformation degree with the threshold, and determining instability and cutting off the laser if the threshold is exceeded. This invention utilizes the geometric characteristics of the phase space trajectory to monitor the dynamic behavior of the weld pool and introduces a dynamic compensation mechanism for accumulated enthalpy, effectively distinguishing between natural thermal fluctuations and abnormal instability, thus achieving precise monitoring and control of welding quality.

This invention discloses a 5052 aluminum alloy cavity for semiconductor devices and its preparation method, relating to the field of aluminum alloy material technology. Specifically, it includes the following steps: S1: First, the 5052 aluminum alloy ingot undergoes a two-stage homogenization treatment, followed by a three-stage free forging process, and finally, spray cooling and air drying to obtain a shaped cavity substrate; S2: After plasma cleaning, the shaped cavity substrate is subjected to magnetron sputtering technology to sequentially deposit a transition layer, a barrier layer, and a functional layer on its inner surface to obtain the 5052 aluminum alloy cavity for semiconductor devices. The 5052 aluminum alloy cavity prepared by this invention can greatly ensure the stability and purity of the prepared aerospace semiconductors, meeting the manufacturing needs of high-performance chips for aerospace applications, and is of great significance.

The utility model discloses a kind of washing machines to prevent dye mixing belong to textile machinery technical field, it includes: support platform, the top of the support platform is fixedly installed with washing machine body and pigment barrel, the top of the washing machine body is provided with double-shaft motor, the both ends output shaft of the double-shaft motor is fixedly installed with pulley one and bevel gear one respectively, the inside of the washing machine body is provided with rotary drum, the both ends of the rotary drum are fixedly installed with shaft, sufficient agitation can accelerate its dissolution process, make pigment particle fully dispersed in solvent, form stable dyeing solution. Like this can improve the utilization of pigment, reduce the adverse effect of unsolved pigment particle to finished garment, can effectively prevent residual pigment mixes into next dyeing operation, to ensure the purity and accuracy of each dyeing, facilitate the movement of device and reach specified area stable work.

The application belongs to the technical field of metal powder preparation, and particularly relates to high-purity rhenium powder and a preparation method thereof. The high volatility of rhenium oxide is utilized, efficient volatilization of rhenium oxide is realized under vacuum conditions, and the high activity of hydrogen radio frequency plasma is utilized to rapidly and completely reduce the rhenium oxide vapor into high-purity rhenium powder, so that the reduction reaction efficiency is significantly improved, efficient and clean preparation of rhenium powder is realized, the problem of impurity introduction in the traditional reduction method can be avoided, and the product purity and particle size can meet the application requirement of high-end fields.

This invention belongs to the field of data security and large-scale scientific instrument management technology, specifically relating to a controlled access and management system for large-scale instrument data. The system comprises a closed network layer: utilizing network devices to construct an independent, physically isolated dedicated local area network (LAN); this network connects only the instrument control host and authorized user access terminals. A data sharing and access layer: a data sharing storage area is set up on the instrument control host; through the closed LAN, authorized user terminals can directly access this area via network paths to browse and download data. This invention achieves controlled, secure access and transmission of scientific instrument data by constructing a closed LAN. This invention is primarily applied to key laboratories in universities, research institutes, and enterprises for managing experimental data generated by high-value large-scale analytical instruments such as mass spectrometers, nuclear magnetic resonance spectrometers, and chromatographs.

This invention belongs to the field of contact lens technology, and provides a moisturizing protein-based contact lens and its preparation method. The preparation method includes the following steps: mixing a silk fibroin solution and a hyaluronic acid-binding protein solution to obtain a protein mixture solution; mixing a hydrophilic modification component, an oxygen-permeable modification component, and water to obtain a composite modifier; mixing the protein mixture solution, the composite modifier, and a crosslinking agent to obtain a pre-crosslinked mixture; molding the pre-crosslinked mixture and performing gradient crosslinking, followed by sequential soaking in buffer solution, rinsing, and sterilization to obtain the moisturizing protein-based contact lens. The contact lens of this invention uses protein as the main component, does not rely on silicon-based substances or harmful crosslinking agents, and possesses high biocompatibility, high oxygen permeability, suitable mechanical properties, and controllable degradation.

The utility model relates to a loudspeaker technical field especially, more particularly to a loudspeaker with LED lamp, including shell, the top of shell is provided with top board, and the top board is opened with through -hole no.

The application discloses a kind of modular hydrogel based on liquid shaping technology, preparation method and application thereof.The method first utilizes the plasticity of liquid rubber clay, and obtains the temporary mold of specific shape by pressing or cutting, which is composed of micro-nano particle shell;The mixture containing photosensitive hydrogel precursor, nanoclay and functional factor is injected into the mold and light-cured to form a hydrogel module;Optionally, after removing the particle mold, a functionalized hydrogel module with specific morphology, non-adhesion to the substrate and adjustable mechanical properties is obtained;Finally, different functional modules are bonded and cured by hydrogel precursor to integrate into a modular hydrogel with spatial heterostructure.The application uses micro-nano particle shell as a shapeable and removable temporary mold, realizes the adjustable design of hydrogel macroscopic morphology, mechanical properties and spatiotemporal sequence of drug release, and has wide application prospect in the field of tissue engineering and regenerative medicine.

The utility model discloses an internal boltless material scraper, specifically relates to the technical field of vibrating conveying equipment, and it is fixedly connected with scraper shaft in the upper portion of scraper, and the both ends of scraper shaft are provided with fixed shaft sleeve and adjusting handle assembly respectively, and fixed shaft sleeve is fixedly connected to the inner wall of vibrating screen, and adjusting handle assembly is located at the outside of vibrating screen. The utility model discloses the mutual cooperation of adjusting handle assembly, fixed pressing plate, fixed seat, sealing washer and scraper shaft that are set up, the mutual cooperation of adjusting handle assembly, fixed pressing plate, fixed seat, sealing washer and scraper shaft, are directly inserted to the inside of connecting hole type through connecting shaft type, thereby can drive scraper shaft and scraper rotation, and then make vibrating screen inside not use fastening bolt, thereby effectively avoid the risk of falling foreign matter, can ensure the purity and safety of material.

The utility model discloses an acid leaching impurity removal device for zirconium oxide processing, which belongs to the technical field of zirconium oxide production equipment and structurally comprises a reaction unit, a diluted hydrochloric acid feeding unit, a diluted ammonia water feeding unit and a control system. According to the utility model, the online thermometer and the online pH meter on the reaction kettle are used for monitoring in real time and feeding data back to the control system, so that the temperature and the pH value are accurately controlled, the reaction conditions are ensured to be stable, zirconium ions are prevented from being hydrolyzed in advance or ferric ions are prevented from being precipitated incompletely, and meanwhile, the reaction temperature is reduced. The diluted hydrochloric acid and diluted ammonia water feeding unit is electrically connected with the control system, the feeding amount can be accurately controlled, the stirring speed of the stirring assembly is controlled by the control system, so that solutions are fully mixed, and the device is simple and convenient to operate, high in automation degree, easy to maintain and capable of improving the production efficiency and ensuring the purity and the quality of final zirconium oxide products.

This utility model belongs to the field of eyeshadow production and preparation technology, specifically an eyeshadow production and preparation compaction device. The base has two sliding grooves on both sides, each containing a transmission screw. Motor supports are mounted at the top of both sliding grooves, and cleaning motors are installed on each support. The output ends of the two cleaning motors are fixedly connected to the tops of the two transmission screws. Sliding blocks are slidably installed within each of the two sliding grooves. During the eyeshadow production process, eyeshadow powder, debris, and other impurities may remain on the compaction mold and placement block. The upper scraper cleans the compaction mold, preventing these residual impurities from mixing into new eyeshadow products during subsequent compaction, ensuring the purity and ingredient stability of each batch of eyeshadow. The lower scraper cleans the placement block, preventing residual impurities from affecting newly added eyeshadow raw materials, ensuring the original quality of the raw materials, and thus improving the overall quality of the eyeshadow product.

This invention discloses a continuous casting and rolling process for high-strength copper alloys, relating to the field of metallurgical engineering technology, comprising the following steps: (a) heating the copper matrix containing tin, zinc, and nickel, and adding appropriate amounts of rare earth elements, in a melting furnace to 1200-1300°C until a uniform copper alloy melt is formed; (b) maintaining the copper alloy melt in an optimal casting temperature range of 1150-1200°C using a holding furnace with temperature control function; (c) continuously casting the held copper alloy melt into long strip billets using a continuous casting machine equipped with an electromagnetic stirring device. The technical solution provided by this invention ensures the fluidity and purity of the copper alloy melt, significantly reduces inclusions using electromagnetic stirring technology, effectively promotes uniform solid solution of alloying elements and the formation of fine, dispersed strengthening phases, introduces a homogenization treatment stage, eliminates component segregation, and improves the uniformity of the material.