468results about How to "Guaranteed purity" patented technology

The invention relates to the technical field of electrical digital data processing, and discloses a lightweight-based multi-modal data enhancement method, which comprises the following steps: acquiring a multi-modal feature tensor; extracting a vector orthogonal projection scalar and determining the novelty; updating the global covariance matrix when the novelty is greater than a redundancy threshold, and maintaining the global covariance matrix in a register state when the novelty is not greater than the redundancy threshold; extracting a main diagonal variance component to determine a differential modulation coefficient; calculating a second-order moment manifold projection operator according to the global covariance matrix, and calibrating the operator by using a differential modulation coefficient; the calibrated operator is used for carrying out orthogonal projection on random noise to generate a structured disturbance vector, the structured disturbance vector is superposed to a multi-modal feature tensor to output enhanced features, a novelty judgment mechanism is used for restraining statistical deviation caused by steady-state redundant data, computing resource occupation is reduced, and it is ensured that semantic alignment between modals is maintained in enhanced feature distribution.

The invention provides a rainfall monitoring method and system based on unmanned aerial vehicle multi-mode noise reduction in the technical field of environment monitoring and unmanned aerial vehicle application, and the method comprises the steps: S1, collecting a visible light image and a long-wave infrared image through a multispectral vision module after an unmanned aerial vehicle takes off, and collecting a rainfall audio from an acoustic cabin through a microphone; s2, carrying out noise reduction processing on the visible light image, the long-wave infrared image and the rainfall audio; s3, extracting a raindrop size distribution histogram and a spatial density thermodynamic diagram based on the visible light image and the long-wave infrared image, and extracting acoustic MFCC features based on rainfall audio; s4, performing feature fusion operation based on the raindrop size distribution histogram, the visual density thermodynamic diagram and the acoustic MFCC features to obtain rainfall intensity; and S5, carrying out cumulant dynamic compensation based on the rainfall intensity to obtain the cumulative rainfall. The rainfall monitoring method has the advantages that the precision, robustness and practical level of rainfall monitoring are greatly improved.

The utility model discloses a mixing device for producing magnesium-aluminum hydrotalcite, which comprises a mixing tank body, a main pipe is rotatably mounted in the middle of the mixing tank body, and a stirring device is mounted on the main pipe; a second feeding pipe is horizontally and fixedly mounted at the bottom of the main pipe, an inner runner of the second feeding pipe is communicated with an inner runner of the main pipe, and a plurality of second spray heads are arranged at the lower end of the second feeding pipe; a material mixing channel is vertically arranged on one side of the mixing tank body, and the bottom of the material mixing channel is communicated with the bottom of the mixing tank body, so that mixed liquid in the material mixing channel flows into the bottom in the mixing tank body; a conveying auger is arranged at the top of the mixing channel, and a first feeding pipe and a feeding hopper are sequentially arranged above the feeding end of the conveying auger in the conveying direction. According to the magnesium-aluminum hydrotalcite mixing device, mixing is carried out twice, stirring is more thorough, the mixing effect is good, and the purity of magnesium-aluminum hydrotalcite can be guaranteed.

The invention discloses a confocal laser microscope detection method for micro-plastic surface biofilm components and biomass, and belongs to the field of micro-plastic pollution monitoring. The method comprises the following steps: carrying out stratified sampling and polymer component identification on micro-plastic in an environmental water body; the method comprises the following steps: marking algae, blue-green algae, bacteria and extracellular polymeric substances in a biological membrane through specific fluorescent staining, carrying out high-resolution three-dimensional imaging by utilizing a confocal laser microscope, and realizing batch quantitative analysis of each component of the biological membrane by adopting ImageJ software. The technical problems that an existing detection method is insufficient in parameter dimension, evaluation result deviation is caused only based on partial component quantification, and the influence of the overall structure of the biological membrane on the micro-plastic migration behavior cannot be truly reflected are solved. According to the method, the biomass and spatial distribution of each component of the biological membrane can be comprehensively and accurately quantified, the accuracy of analyzing the vertical migration mechanism of the micro-plastic is improved, and multi-dimensional data support is provided for ecological risk assessment.

The application relates to the field of chemical material preparation, and particularly discloses a high-purity silicon nitride powder and a preparation method thereof. The preparation method of the high-purity silicon nitride powder is as follows: 30-40 parts of silicon dioxide nano particles are mixed with 12-40 parts of carbon black to obtain a blend by adding deionized water, the blend is stirred, and the blend is dried at 60-65 DEG C to obtain a silicon-carbon precursor; nitrogen is introduced into the carbon-silicon precursor, the temperature is increased to 1350-1500 DEG C, and the temperature is kept constant to obtain a crude product; ammonia is continuously introduced into the crude product, the temperature is kept constant at 1300-1400 DEG C to obtain a first purification product; the first purification product is cooled to 600-650 DEG C, oxygen is introduced, and the temperature is kept constant to obtain a second purification product; and the second purification product is cooled to obtain the product. The preparation method of the high-purity silicon nitride powder can prepare high-purity silicon nitride powder with a purity of 99.65% or above.

The utility model relates to the technical field of combustion equipment, and provides a low-nitrogen combustion device for flue gas recirculation, which comprises a circulation frame, a gas delivery pump and a secondary gas mixing mechanism, the circulation frame is provided with a venturi mixing tube group, the venturi mixing tube group is communicated with a uniform gas delivery mechanism for flue gas delivery, the gas delivery pump is mounted on the circulation frame, and the secondary gas mixing mechanism is mounted on the circulation frame. The gas outlet end of the gas conveying pump is communicated with one end of the Venturi mixing tube set through a gas conveying bent tube, and the secondary gas mixing mechanism is installed on the circulation frame, arranged in the Venturi mixing tube set in a penetrating mode and used for conducting secondary acceleration and mixing on gas in the Venturi mixing tube set. The low-nitrogen combustion device for flue gas recirculation solves the problem that in the prior art, when a low-nitrogen combustion device for flue gas recirculation circulates flue gas, the mixing efficiency of the flue gas and air is poor.

The invention belongs to the technical field of synthesis of 2, 3-dipicolinic acid, and relates to a catalyst for synthesizing 2, 3-dipicolinic acid as well as a preparation method and application thereof, the catalyst is prepared from a carrier, and active components and auxiliaries loaded on the carrier; the carrier is boron nitride modified aluminum oxide, the active component is palladium-cobalt bimetal, and the auxiliary agent is magnesium; the catalyst comprises the following components in percentage by mass: 0.2 wt%-3wt% of palladium, 0.5 wt%-4wt% of cobalt, 0.05 wt%-0.3 wt% of magnesium, 5wt%-15wt% of boron nitride and the balance of an aluminum oxide carrier. The catalyst is prepared by adopting an ultrasonic-assisted sol-gel method, so that high dispersion and strong interaction of active components are realized. The catalyst shows high catalytic activity, high selectivity and excellent stability in a dichloropyridine carbonylation reaction, carbon monoxide is used as a carbonyl source, the atom economy is high, and the green chemical requirement is met.

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

The utility model relates to the technical field of methanol purification, and provides a coal-to-methanol synthesis gas purification device which comprises a catalytic device, a gas inlet is formed in the top of the catalytic device, and a gas outlet is formed in the bottom of the catalytic device; a gas distributor is installed at the position, close to the inner side of the catalytic device, of the bottom of the gas inlet, two partition plates are further arranged on the inner side of the catalytic device, a ring pipe is arranged at the position, arranged on the inner side of the catalytic device, between the two partition plates, and cooling pipes are arranged at the bottom end and the outer side of the ring pipe. A catalyst cavity is formed in the inner side, close to the outer side of the cooling pipe, of the catalytic device; the application of the demister further removes tiny liquid drops and vaporific impurities entrained in the gas, ensures the purity of the purified synthesis gas, and meets the strict requirements of high-end chemical production on the gas quality.

The utility model discloses a kind of wood brush handle paint dipping assemblies, applied in wood paint dipping field, including box and conveying mechanism, the side of the box is fixed with fixed frame by support rod bolt connection, the inside of the fixed frame is provided with adjusting frame, the inside of the adjusting frame is bolted with cylinder, the piston end of the cylinder is installed with pusher, the side of the box is installed with connecting plate, the top of the connecting plate is bolted with baffle and blocking rod respectively, the top of the connecting plate is provided with through slot, the inside of the box is bolted with paint groove, the inside of the box is provided with drying mechanism, the bottom of the paint groove is bolted with circulating pump. It can be convenient to take and place wood brush handle, simple and easy to operate, saves the burden of personnel to wood brush handle manual plug, improves the stability when wood brush handle moves, can have circulating impurity removal function simultaneously, guarantees the purity of paint liquid in paint groove, improves the production efficiency of device, and practicality is high.

The invention belongs to the technical field of waste textile recovery equipment, and particularly relates to a separation device for waste textile recovery, which is used for separating a waste quilt core which only retains an upper-layer coated fiber braided fabric and a lower-layer thermal insulation fiber layer, and comprises a first conveying mechanism, a second conveying mechanism, a third conveying mechanism and a fourth conveying mechanism, the feeding mechanism is in butt joint with the output end of the first conveying mechanism and is used for flattening and compacting the waste quilt cores and continuously conveying the waste quilt cores; the second conveying mechanism is used for receiving and conveying the separated thermal insulation fiber layer; wherein the first conveying mechanism, the feeding mechanism and the second conveying mechanism are sequentially mounted on the rack from left to right; the device further comprises a net cotton separating mechanism and the like. By means of continuous collaborative operation of the first conveying mechanism, the feeding mechanism, the net and cotton separating mechanism, the net stripping mechanism, the negative pressure mechanism and the second conveying mechanism, continuous treatment of waste quilt cores from conveying, flattening and compacting to net and cotton separating and stripping is achieved.

The invention relates to the technical field of sewage treatment, in particular to a layered discharge mechanism of a municipal sewage treatment tank and a discharge method of the layered discharge mechanism. According to the technical scheme, the device comprises a pool body and a supporting cylinder fixedly connected to the side wall of the pool body, and further comprises a layered driving part, a liquid discharging mechanism and a flow transferring pipe fitting; the layered driving part is installed in the supporting cylinder, and the flow transferring pipe fitting is installed at the input end of the liquid discharging mechanism. The layered driving part comprises a sliding block which is slidably connected into the supporting cylinder, and a drainage mechanism which extends into the pool body is mounted at the bottom end of the sliding block through a transmission part. The drainage mechanism is arranged on the inner side of the pool body, the two liquid guide grooves are distributed in the inclined part in a T shape, large-area and multi-angle layered drainage can be achieved, the liquid guide grooves are of a V-shaped structure, water is not prone to mixing when the liquid guide grooves sink in water, the layered drainage effect is remarkably improved, drainage negative pressure is dispersed, layered water in the pool body cannot be mixed, and the drainage effect is improved. And the purity of layered discharge is further ensured.

The present application relates to the technical field of tethered unmanned aerial vehicle, and discloses an unmanned aerial vehicle energy supply system and method based on optical fiber cable, comprising: an energy supply station arranged on the ground or carried on a mother ship; a light flexible high-energy laser transmission optical cable, the first end of which is optically coupled with the energy supply station; and an unmanned aerial vehicle, which is provided with an optoelectronic conversion unit, the second end of the light flexible high-energy laser transmission optical cable being releasably physically connected with the optoelectronic conversion unit, for receiving a high-energy laser beam transmitted through the light flexible high-energy laser transmission optical cable, and converting the high-energy laser beam into electric energy through the optoelectronic conversion unit to provide all or part of the electric power required for flight and task load; through the laser-electric energy conversion mode based on the light flexible high-energy laser transmission optical cable, the decoupling of the hovering height and the operation radius of the unmanned aerial vehicle is realized, the restriction of the self-weight of the on-board battery on the flight performance is eliminated, and the unmanned aerial vehicle can still maintain stable hovering and long-time hovering in a complex airflow environment.

This invention relates to the field of fine chemical technology, specifically disclosing a production process for electronic-grade diethyl carbonate. The method includes the following steps: ethylene carbonate and anhydrous ethanol undergo a transesterification reaction in a microwave reactor catalyzed by a composite catalyst; the reaction solution is then subjected to phase separation treatment, followed by a continuous separation process coupling atmospheric and vacuum distillation to obtain an intermediate; further purification is achieved by molecular sieve adsorption to remove metal impurities and moisture, combined with precision filtration using a polytetrafluoroethylene membrane. The composite catalyst significantly improves the transesterification reaction efficiency and product selectivity. This process, through the synergistic effect of reaction process enhancement and multi-stage purification technology, achieves highly efficient removal of moisture, metal impurities, and nanoscale particles from the reaction system. The resulting electronic-grade diethyl carbonate meets the stringent requirements of high-end electronic chemicals such as lithium battery electrolytes, and possesses technical advantages such as short reaction cycle, thorough impurity removal, and high product purity.

The invention relates to the technical field of tire treatment equipment, in particular to a waste tire cracking utilization device which comprises a cracking box, an upper cover is rotatably arranged at the upper end of the cracking box, a locking structure is arranged on the upper cover, and a cracking chamber for cracking waste tires is arranged in the cracking box. A heating mechanism for heating waste tires is arranged on the cracking chamber, an oil collecting tank matched with the heating mechanism is arranged at the lower end of the cracking chamber, a plugging mechanism matched with the oil collecting tank is arranged in the cracking chamber, and an upper cover is fixed by arranging a locking structure. The upper cover and the feed port of the cracking box form a sealing structure to prevent air permeation, and the plugging mechanism is arranged to plug the cracking chamber to form a sealing structure, so that air cannot enter the cracking chamber during reaction, the cracking chamber can be in an anoxic state, and liquid oil, gas and solid carbon black produced by cracking reaction are good in quality. The production efficiency is high.

The utility model discloses a PVC board crushing equipment with magnetic force box relates to PVC board crushing technical field, and this equipment includes bottom plate, sorting part and crushing part. The crushing part is located above the sorting cylinder, and PVC board is broken through the cooperation of crushing shaft no. 1, crushing shaft no. 2 and box wall cutting piece, and is driven by the crushing motor. In the sorting part, the stainless steel sorting cylinder in the sorting box cooperates with the internal sector permanent magnet sorting fixed wheel, and the magnetic impurities in the broken material are separated by magnetic force, and fall into the lower collecting box through sorting blanking groove no. 1 and sorting blanking groove no. 2 respectively. The equipment realizes the integration of crushing and sorting, improves the purity of material, reduces the equipment loss, and is suitable for the PVC board processing in multiple fields.

The invention discloses a jaw crusher rack, and belongs to the technical field of jaw crusher racks, the jaw crusher rack mainly comprises a base plate, a left side plate, a rear plate, a right side plate and a front plate, the left side plate and the right side plate are symmetrically arranged above the base plate, and the rear plate and the front plate are clamped to the two ends of the left side plate and the two ends of the right side plate respectively to form a closed rack main body; second tenons are fixedly connected to the connecting position of the left side plate and the front plate and the connecting position of the right side plate and the front plate, and second mortises are formed in the connecting positions of the front plate and the second tenons. The machine frame has the beneficial effects that vibration transmission is weakened, part abrasion and scrap iron generation are reduced, the iron impurity mixing risk is reduced, the ore sand product purity is guaranteed, the overall strength and connection stability of the machine frame are improved, stress concentration is avoided, local part replacement can be achieved through modular design, and the production cost is reduced. The whole rack does not need to be replaced, so that the maintenance cost and shutdown loss are greatly reduced.

The utility model discloses raw material juicing equipment for blended fruit juice production, which comprises a base, the outer wall of the top of the base is fixedly connected with a squeezing device, the inner wall of the top of the squeezing device is fixedly connected with a feeding guide plate, and the outer wall of the bottom of the squeezing device is fixedly connected with a distributing guide plate. According to the squeezing device, through cooperation of the positioning block and the connecting plate, when the interior of the squeezing barrel needs to be cleaned, the rotating button is rotated to move upwards on the screw rod and break away from the connecting plate, then the screw rod is rotated to break away from the connecting groove, and the opening and closing plate can be opened; the inside of the squeezing barrel is completely exposed, an operator can conveniently and comprehensively clean residual pulp, juice and the like, two flow guide plates are arranged through the material distribution guide plate, one flow guide plate is located below the filter screen, and the other flow guide plate is located below the discharging plate, so that the juice and pomace can be respectively guided through one component.

This invention relates to the field of food preservation technology and discloses a liquid preservative for preserving fresh walnut kernels. The preservative comprises a natural preservative, a solubilizing and stabilizing agent, and a solvent. This liquid preservative uses natural phloretin as the preservative component, combined with Tween 80 as a solubilizing and stabilizing agent and ethanol as a solvent. This effectively solves the problems of poor water and oil solubility and inadequate stability of phloretin, allowing it to be stably dispersed in the preservative system and fully exert its antioxidant and antimicrobial effects. Furthermore, the preparation method is simple and easy to implement, and the production process is safe and controllable. It is convenient to use; the preservation of fresh walnut kernels can be achieved through dilution and soaking. The diluted solution can be reused, reducing usage costs. Simultaneously, it can inhibit bacterial growth during the storage of fresh walnut kernels, delay oxidative deterioration, maintain their good appearance and quality, extend shelf life, and meet the market demand for high-quality fresh walnut kernels.

The utility model relates to the technical field of raw material medicine temporary storage, especially to a raw material medicine temporary storage tank, including temporary storage tank body, still including heat preservation groove, water adding pipe, drain pipe, sealing upper cover, opening, hollow water distribution ring, liquid inlet pipe and liquid jet head, the utility model discloses hot water or ice water is added to the inside of heat preservation groove through water adding pipe, and the temperature of hot water or ice water is passed to its inside through temporary storage tank body, so that the temperature in temporary storage tank body keeps the environmental temperature required by raw material medicine, when not needing heat preservation, just need to open drain pipe and can discharge the hot water or ice water in heat preservation groove, and the cleaning fluid is conveyed into hollow water distribution ring through liquid inlet pipe through external water delivery device, and the cleaning fluid in hollow water distribution ring will be sprayed through a plurality of liquid jet heads, since the water outlet of liquid jet head is opposite the inner wall of temporary storage tank body, so the cleaning fluid sprayed by liquid jet head can flush the inner wall of temporary storage tank body, and realizes the function of heat preservation and continuous cleaning.

The utility model relates to the field of beverage bottle lid discloses a beverage bottle lid with press trigger suction accessory falling function, including the cover, the top of cover is provided with the false touch press assembly, the upper portion of cover is provided with the installation mouth, the top of cover is connected with the limit lug of fixed connection and the number is multiple, the false touch press assembly includes the protection cover, the bottom of protection cover is fixedly connected with the control pipe, the inside movable joint of control pipe has the press bar, the outside of control pipe is provided with the auxiliary pipe, the outside fixed connection of auxiliary pipe has the fixed ring, the fixed ring is fixedly connected with the inner wall of installation mouth. In the utility model, through setting false touch press assembly and setting limit lug and limit recess etc. between the cooperation of parts, the bottle cap can be effectively protected, the false trigger of bottle cap in the process of transportation or selling can be effectively avoided, is more practical.

The utility model relates to the technical field of microorganism collection, and discloses a microorganism collection device for object surface monitoring, which comprises a base body, an object surface contact belt, a clamping component and a sealing component, an opening is arranged on the base body, and the clamping component can enter the base body from the opening. After the device finishes sampling, the contact surfaces of the two groups of object surface contact belts are extruded and attached by extruding the telescopic rod, so that a sealed container is directly formed, and the contact surfaces adhered with microorganisms are positioned in a closed space. The outside of the container is a non-contact surface, and the inside of the container is not in contact with external microorganisms in the process of transferring to a sterile table or a transport case, so that the sample purity is ensured; and the sealed container does not need an additional packaging step, so that the risks of sample exposure and pollution are reduced.

This invention relates to the field of graphite waste treatment technology, and more particularly to a method for preparing special graphite materials from isostatic pressing graphite waste, comprising the following steps: waste collection: firstly, the waste generated from isostatic pressing graphite production is collected and processed centrally; waste treatment: the collected waste is centrally fed into a purification module, where impurities are screened and removed; waste crushing: after the isostatic pressing graphite waste has been screened, it is pushed into a crushing device for crushing; material proportioning, pressing, primary calcination, and graphitization treatment; this invention, by processing the waste from isostatic pressing graphite production through the screening and purification processes described above, followed by crushing, can then be proportioned, fed into a mixing pot, and then pressed, calcined, and graphitized to produce special graphite materials, thus avoiding environmental pollution from waste and achieving full utilization of resources.

The utility model discloses environment-friendly low-alkali cement grinding aid stirring equipment which comprises a stirring machine shell, an inner cavity is fixedly connected in the stirring machine shell, the top end of the inner cavity is in threaded connection with a first rotating shaft, a plurality of push type paddles are fixedly connected to the first rotating shaft in the vertical direction, and the first rotating shaft is in threaded connection with a second rotating shaft in the vertical direction. The top surface of the stirrer shell is fixedly connected with a motor I, and the output end of the motor I is fixedly connected with the rotating shaft I; a second rotating shaft is in threaded connection with the top end of the stirrer shell, a plurality of turbo type paddles are fixedly connected to the second rotating shaft in the vertical direction, a second motor is fixedly connected to the top face of the stirrer shell, and the output end of the second motor is fixedly connected with the second rotating shaft; liquid components are mixed with low shear force in the pre-stirring stage of the push-type paddle, the scrapers synchronously remove attachments on the wall of the cavity, and the turbo-type paddle rapidly crushes solid particles through high shear force and promotes uniform fusion of materials, so that the reaction activity of the grinding aid and the stability of a finished product are remarkably improved.

This invention provides a method for recovering and utilizing distillation residue after solvent removal from homohydric anhydride, relating to the field of fine chemical technology. The method includes anhydride treatment, vaporization and sublimation, dissolution and recrystallization, distillation, and water washing. In this invention, the distillation residue is anhydride-treated under high temperature and negative pressure, followed by vaporization and sublimation under vacuum to separate mechanical impurities and high-boiling substances. Then, through dissolution and recrystallization, the difference in solubility between homohydric anhydride and metahydric anhydride in polar solvents is utilized to preferentially crystallize out the homohydric anhydride. The mother liquor is distilled to remove the solvent, and then colored impurities are removed by hot water washing and activated carbon adsorption. Finally, it is cooled and crystallized to obtain trimellitic acid. The homohydric anhydride obtained by this invention has a purity ≥95% and a yield of 84-89%, and the trimellitic acid has a purity ≥97% and a yield of 81-86%. This method achieves effective recovery of high-value-added components from distillation residue, demonstrating significant economic and environmental benefits and promising application prospects.

This utility model discloses a modular electrolytic reaction tank for preparing high-purity metallic magnesium, belonging to the field of metallic magnesium reaction tanks. It includes a reaction tank body, with a cover plate fixedly connected to the upper surface of the body by multiple bolts. A conveying pipe is fixedly connected to the left side of the upper surface of the cover plate. A collection box is fixedly connected to the right side of the lower inner surface of the reaction tank body. A through-type collection port is opened on the upper left side of the inside of the collection box. This utility model achieves efficient and rapid separation through the unique structure of the collection box and related components. When the liquid magnesium reaches a certain thickness, the level gauge detects a signal, the electric push rod is activated, pushing the sliding plate two. Through the gas box and gas delivery hole, the sliding plate one moves the baffle one upward, opening the collection port. Liquid magnesium quickly flows into the collection box, greatly reducing the residence time of liquid magnesium in the reaction tank body, effectively reducing impurity dissolution, and improving the purity of metallic magnesium and product quality.

The application discloses a kind of based on composite environment fingerprint solid state disk self-adapting test system and method, system includes central dispatch server and test agent platform, central dispatch server is configured with fingerprint generation unit, for generating target composite environment fingerprint;Test agent platform includes acquisition module, out-of-band management module, decision module and execution module;Acquisition module is used to obtain solid state disk hardware attribute and host software environment information;Out-of-band management module runs at BMC side, independent of host operating system maintenance physical layer environment vector, and receives acquisition module heartbeat maintenance software layer environment vector;Decision module is used to generate current composite environment fingerprint and compare with target composite environment fingerprint to determine operation type, and whether update historical composite environment fingerprint after environment switching according to fingerprint consistency determination;Execution module is used to execute corresponding environment switching operation.The application realizes the unified modeling and adaptive switching of SSD test environment.

This invention provides an ultrafine intermediate molybdenum oxide material and its preparation method. The method involves placing ammonium molybdate in a reaction vessel and heating it in a vacuum environment at 400℃–600℃ for at least 3 hours to obtain the ultrafine intermediate molybdenum oxide material. The reaction vessel is a sealed structure except for the exhaust end, which is equipped with a one-way gas flow valve. The Fisher particle size of the ultrafine intermediate molybdenum oxide material is 0.8–1.0 micrometers. The method uses a reaction vessel equipped with a one-way gas flow valve, preventing external air from entering during the roasting process while simultaneously allowing the exhaust of gases generated during decomposition, thus ensuring the purity of the obtained molybdenum oxide material. The process conditions are simple and easy to control, making it suitable for industrial production. This material, with its small particle size and high purity, has broad application prospects.

The utility model provides an ultra-radio frequency anti-aging transdermal collagen light beauty instrument. The ultra-radio-frequency anti-aging transdermal collagen light beauty instrument comprises a shell, and a skin contact area is formed at one end of the shell; the optical assembly comprises a halogen lamp tube, a light filtering part and a light transmitting part which are sequentially arranged at intervals, the halogen lamp tube and the light filtering part are arranged in the shell, at least part of the light transmitting part is exposed out of the skin contact area, and the light filtering part allows near-infrared light emitted by the halogen lamp tube to pass through and prevents non-near-infrared light emitted by the halogen lamp tube from passing through; the light transmitting piece is used for enabling near-infrared light formed after filtering of the light filtering piece to irradiate out of the shell, the halogen lamp tube and the light filtering piece are arranged in parallel, and the distance between the halogen lamp tube and the light filtering piece is not smaller than 2 mm; the controller is arranged in the shell, and the halogen lamp tube is electrically connected with the controller so as to control the halogen lamp tube to work. According to the technical scheme, the problems that in the prior art, a beautifying instrument is low in use safety and poor in beautifying effect are solved.

The invention discloses a wireless network positioning method, server and system, and relates to the technical field of wireless communication and positioning navigation. The method comprises the following steps: receiving a signal sent by a to-be-positioned target node through a plurality of positioning reference nodes and extracting an original positioning parameter sequence; then, improved Z-score exception elimination based on median and median absolute deviation and adaptive attenuation coefficient smoothing based on average inter-frame hopping are carried out on the sequence, and a stable estimated value and a measurement variance are output; and finally, according to the number of the effective positioning reference nodes, adaptively switching a CHAN algorithm or a weighted least square method to carry out position calculation. The improved Z-score filtering and dynamic weight fusion technology is adopted, the defects in the prior art are overcome, the problem that a fixed algorithm is poor in robustness when the reference node topology change is positioned is solved through an algorithm self-adaptive switching mechanism, the precision and adaptability are remarkably improved in a complex scene, and meanwhile the deployment and maintenance cost is reduced.