424results about How to "Good repeatability" patented technology

An integrated cleaning and liquid supply device and online cleaning method for polyurethane polishing pads are disclosed. The device includes a base, a rotating seat, a swing arm, an independent liquid supply pipeline system and cleaning pipeline, a high-pressure nozzle array, and a positioning sensor assembly. During the polishing stage, polishing liquid is dripped through the liquid supply outlet. During the cleaning stage, the swing arm moves centripetally to a preset position aligned with the center of the polishing pad. The positioning sensor triggers a high-pressure pump, causing pure water to be sprayed as an atomized jet along the diameter of the pad surface through the high-pressure nozzle array. Simultaneously, the polishing pad rotates at a low speed, utilizing the synergistic effect of centrifugal force and high-pressure water flow to thoroughly remove residual contaminants within the micropores of the polyurethane. This invention integrates liquid supply and deep cleaning functions into the same motion mechanism, eliminating the need for machine shutdown or manual intervention. It offers advantages such as non-contact, non-destructive, thorough cleaning, and high automation, extending the life of the polishing pad and improving the stability of the CMP process.

The utility model discloses a kind of rock breaking devices of self-adaptive ultrahigh pressure gas can be repeatedly automatically released and hole sealing, it is related to gas fracturing technical field, the device includes: fracturer, the both ends of fracturer are respectively provided with first end cap and second end cap, the inside of fracturer is provided with reaction cabin;Pressure-increasing mechanism, is inserted in first end cap, for by the combustion of biomass foam, make reaction cabin internal air pressure rise;Piston assembly, between fracturer and second end cap, for with second end cap cooperation, release gas, to realize rock breaking;Hole sealing mechanism, located at the outside of fracturer, for preventing gas to leak out, to maintain fracturing instantaneous hole sealing integrity;Second end cap, for making gas cluster to spray out.The utility model is balanced by using the gas pressure of reaction cabin and top pressure cabin inside fracturer and the special structure of piston, more efficient completion rock fracturing is realized without installing rupture disc in fracturer and frequently disassembling replacement condition.

This application discloses a method and related equipment for evaluating the smoothness of in-vehicle infotainment systems, relating to the field of vehicle testing technology. The method includes: acquiring a recorded video stream of the in-vehicle interaction process of a target vehicle; parsing and processing the recorded video stream to obtain temporal data of the visual features of the in-vehicle infotainment system during the interaction process; determining quantitative information on the smoothness of the target in-vehicle infotainment system based on the temporal data of the visual features; and generating a smoothness score characterizing the smoothness of the in-vehicle infotainment system based on touch response latency, animation frame dropping features, and stuttering features. This application, by parsing and extracting temporal data of the visual features from the recorded video stream of the in-vehicle interaction process, quantifying touch response latency, animation frame dropping features, and stuttering features, and generating a unified smoothness score, can achieve an objective, detailed, and comprehensive evaluation of the smoothness of the in-vehicle infotainment system.

The present application relates to the technical field of ring piece processing, and particularly relates to a rolling process control method and control system based on a special-shaped ring piece intelligent production line, comprising the following steps: S1: confirming a bevel angle, and calculating a maximum outer diameter of a fourth blank, a maximum inner diameter of the fourth blank, and a height of the fourth blank; S2: calculating a maximum outer diameter of a third blank, a maximum inner diameter of the third blank, and a height of the third blank; S3: calculating a maximum outer diameter of a second blank, a maximum inner diameter of the second blank, a height of the second blank, and a flat-bottom continuous skin thickness; S4: calculating a bottom outer diameter of a first blank and a thickness of the first blank; S5: calculating a thickness of a round bar; and S6: calculating a free forging upsetting speed, a tire membrane forging punching speed, a free forging punching continuous skin speed, a core roller feeding speed, and an expansion machine main cylinder movement speed during expansion. The present application improves the processing and forming quality of special-shaped ring pieces.

This invention belongs to the field of biosensor technology, specifically relating to an aflatoxin B1 sensor based on exchange catalysis and photocurrent polarity reversal, its preparation method, and its application. The sensor includes a reference electrode, a photosensitive substrate electrode, an AFB1-specific aptamer-trigger chain conjugate, a basement exchange catalytic nucleic acid amplification system, and an h-Zn1Cd5S-hairpin H conjugate. The sensor constructed by this invention is easy to operate, has a fast response speed, good repeatability, high detection sensitivity, and specificity. It can avoid interference from signal fluctuations, and its preparation method is simple, showing broad application prospects in aflatoxin B1 detection.

This invention discloses a novel laser-welded linear welding positioning device, relating to the field of laser welding technology for automotive sheet metal. It includes a pressure rod, with sliding mechanisms on both the left and right sides of the pressure rod's outer surface. Through the cooperation of a fastening bolt, spring, and pressure rod, this invention allows for fine-tuning according to the workpiece thickness. Regardless of whether a thick or thin plate is selected as the positioning reference surface, the device achieves rapid and reliable positioning. Its unique stop design, combined with the base plate reference surface, forms a combined positioning system. This avoids the welding scrap problem caused by the second plate exceeding the reference edge due to differences in plate thickness in traditional welding, and significantly improves the repeatability of the welding process and the quality of the weld seam. The cooperation of the pressure rod and sliding mechanisms allows the device to move flexibly along the workpiece surface, thereby achieving rapid positioning of weld seams at different locations, ensuring efficient and stable positioning, and significantly improving the adaptability and efficiency of welding operations.

The application relates to a quick dismounting structure and method for a heavy mold, and relates to the technical field of mold manufacturing. The quick dismounting structure comprises a mounting mold frame and a heavy mold arranged on the mounting mold frame. The mounting mold frame comprises a lower mold base for supporting the heavy mold, an upper mold frame, and a wedge block assembly wedged between the heavy mold and the mounting mold frame. The heavy mold is provided with an upper mounting portion and a lower mounting portion. The lower mounting portion is provided with a lower guide surface inclined towards both sides of the heavy mold from top to bottom. The upper mold frame is provided with an upper mounting groove matched with the upper mounting portion for locking. The lower mold base is provided with a lower mounting groove matched with the lower mounting portion for locking and a push assembly slidably arranged on both sides of the lower mounting groove. The push assembly comprises an ejection unit arranged on one side of the lower mounting portion and a push-in unit arranged on the other side. The ends of the ejection unit and the push-in unit are respectively parallel to the corresponding lower guide surfaces. The application can improve the quick dismounting effect of the heavy mold and the mold frame support.

The present application relates to a kind of spectral analysis system and method, specifically, a kind of laser-induced breakdown spectroscopy analysis system and method based on suspended electrode and filter paper.The system includes filter paper, adjustable sample stage, high-voltage discharge device, suspended electrode, laser ablation device and spectral signal acquisition and analysis device.The present application uses suspended electrode to change the distribution characteristics of high-voltage electric field, increase local electric field line density and electric field intensity, improve the collision frequency of charged particles in plasma, so as to further enhance the detection sensitivity of LIBS to trace elements, and reduce its detection limit.High-voltage discharge device is used to excite laser plasma again, to improve the detection and analysis ability of target elements.Filter paper enrichment method is used for pretreatment of the sample to be measured, which can effectively reduce the interference of liquid matrix on plasma spectral signal, and improve the sensitivity and stability of detection signal.

This invention provides a wireless, passive force-position implantable growth monitoring system and its fabrication method for early-onset scoliosis correction. The system includes: a connected compressible capacitive sensor and a flexible wireless antenna coil; the compressible capacitive sensor is connected to a self-growing early-onset scoliosis correction implant growth rod, and the flexible wireless antenna coil is disposed within the body. The compressible capacitive sensor and the flexible wireless antenna coil together constitute an LCR resonant circuit; the compressible capacitive sensor monitors the pressure changes caused by the elongation of the self-growing early-onset scoliosis correction implant growth rod during tissue or bone growth, thereby causing changes in capacitance and resulting in changes in the resonant frequency of the LCR resonant circuit; the resonant frequency change is detected and read out wirelessly via an external readout device. This system is designed to meet the needs of digital rehabilitation, requires no internal power supply, and has a stable structure, making it suitable for growth monitoring after early-onset scoliosis correction surgery.

The present application relates to the field of pharmaceutical preparation and nanomedicine, and particularly relates to a kind of nano-drug composition, its combined drug delivery system and application.The nano-drug composition comprises alpha 1-AR blocker and amphiphilic nano-carrier;The alpha 1-AR blocker is loaded in the hydrophobic core formed by amphiphilic nano-carrier;The alpha 1-AR blocker is selected from one or more of prazosin, terazosin, doxazosin;The average particle size of the nano-drug composition is 220-260 nm, the polydispersity index is less than 0.3, and the encapsulation efficiency is greater than 50%.The nano-drug composition of the present application has dual functions of anti-tumor proliferation and immune microenvironment remodeling, improves the dispersion stability of the drug in physiological medium, effectively reduces the in vivo clearance rate, prolongs the circulation time, and realizes the efficient in vivo delivery of the drug.The preparation process of the nano-preparation is stable and can be produced on a large scale.

This invention relates to a method for amplifying the polarization ratio of a photodetector based on a two-dimensional semi-metallic material and a heterostructure, belonging to the field of photodetection technology. Based on a strategy combining a two-dimensional semi-metallic material and a heterostructure, a BP / MoS2 / WTe2 heterojunction is constructed, where BP is the light-absorbing layer, MoS2 is the barrier layer, and WTe2 is the contact layer. This invention not only achieves selective carrier transport and reduces dark current, but also allows WTe2 to reduce contact resistance and provide a fast carrier extraction channel, realizing asymmetric amplification of the photocurrent, thereby achieving active amplification of the polarization ratio even at zero bias. This invention breaks the limitation of the inherent anisotropy of materials on the magnitude of the polarization ratio, and uses a completely dry transfer process to fabricate polarization detection photodetectors, eliminating the need for additional polarization elements and chemical solution treatment. It boasts advantages such as simple process, low cost, high repeatability, and no pollution.

The application discloses a process for improving the quality of palm kernel meal feed by enzyme and bacteria synergistic fermentation, and belongs to the field of feed biotechnology.The process is characterized by the following steps: crushing and screening palm kernel meal, mixing the palm kernel meal with 20% bran and 4% ammonium sulfate as dry matter to obtain a basic substrate;compounding bacillus subtilis, aspergillus niger and saccharomyces cerevisiae at a ratio of 1:1:1 of viable bacterial number, adding 0.67% mannanase and 0.3% xylanase to prepare a bacteria-enzyme mixed solution, inoculating the bacteria-enzyme mixed solution at a 10% inoculation amount, adjusting the moisture content to 50% and the pH to 6.4, and then sealing and storing the bacteria-enzyme mixed solution for use after 4 days of fermentation at 33.5 DEG C; and the bacteria-enzyme mixed solution can be stored for a long time.The process can efficiently degrade crude fiber and anti-nutritional factors, improve the protein content and the digestibility, is stable and easy to mass-produce, can replace part of corn and soybean meal in the daily ration of ruminants, and realizes high-value utilization of palm kernel meal.

The utility model discloses a kind of space transcription chip clamping mould, including heating base (1), compression part, diaphragm piece (8) and chip seat (7), the top of heating base (1) is provided with heating plate (2), the bottom of heating base (1) is arranged with multiple heat conduction columns (3), compression part includes compression cover (4) and positioning member (5), diaphragm piece (8) includes multiple mutually isolated through holes (801), chip seat (7) is arranged between positioning member (5) and compression cover (4), the upper surface of chip seat (7) is provided with the chip accommodating groove (701) for positioning chip (6), the bottom of chip accommodating groove (701) is provided with avoiding hole (704), heating plate (2) passes through the avoiding hole (704). The scheme can ensure the positioning stability of chip, avoid chip fragmentation, while ensuring that the setting temperature of each reaction area of chip and PCR instrument heating base plate remains highly consistent.

The application relates to the technical field of computers, in particular to a power-off test method and system based on Jenkins and SecureCRT, computer equipment and a medium; the method comprises the following steps: in response to configuring power-off test parameters for a test task through a Jenkins platform, triggering the test task and distributing the test task to a test control host; establishing a connection with a device under test and a programmable power supply according to the power-off test parameters; executing an automatic script through a SecureCRT terminal on the test control host, controlling the programmable power supply to perform power-on and power-off operations on the device under test; in the process, monitoring the running state of the device under test, and based on the monitoring result, verifying the state of the device under test by applying a string matching rule, and generating a power-off test result. In this way, the technical problem that the existing automatic power-off test technology is difficult to synchronize with the internal state of the device is solved, and the automation level, repeatability and fusion degree with a modern research and development system of the test process are improved.

The application discloses a diabetic nephropathy pathological model based on human renal tubular epithelial cell organoids and a construction method and application thereof, and belongs to the field of biomedical technology. The construction method comprises the following steps: jointly inducing the renal tubular epithelial cell organoids in a culture medium containing glucose, advanced glycation end products and tumor necrosis factor alpha to prepare the diabetic nephropathy pathological model. The diabetic nephropathy pathological model is constructed by joint induction, the model shows the core pathological phenotypes of diabetic nephropathy, including down-regulation of renal tubular epithelial cell marker expression, up-regulation of fibrosis marker expression, thickening of the basement membrane and abnormal albumin uptake function, the construction method is simple and standardized, the construction period is short, the model has good repeatability and stability, the model has wide application value in high-throughput screening of traditional Chinese medicine monomers or compound medicines with kidney protection, and provides a new platform for mechanism research and treatment strategy development of diabetic nephropathy.

This invention discloses a method for simultaneously detecting isorhamnetin and rosmarinic acid in Prunella vulgaris seeds and its application. The method includes simultaneous qualitative identification of isorhamnetin and rosmarinic acid in Prunella vulgaris seeds using thin-layer chromatography; direct extraction of isorhamnetin and rosmarinic acid using a specific polar solvent extraction method and separation from lipid-soluble components; comparison with a mixed standard of isorhamnetin and rosmarinic acid; and simultaneous determination of the content of isorhamnetin and rosmarinic acid in Prunella vulgaris seeds using high-performance liquid chromatography. This method has advantages such as high accuracy and precision, good stability and repeatability, providing a method for quality detection of isorhamnetin and rosmarinic acid components in the development and utilization of Prunella vulgaris seeds, with strong specificity and good reproducibility.

The diaphragm valve claimed in the present application comprises a valve body, a core assembly, a winding coil and a diaphragm, and a valve port is formed on the valve body; the core assembly comprises a movable core, a plug is connected to the movable core, and the plug can drive the opening / closing of the valve port; the winding coil is sleeved on the movable core; the diaphragm is accommodated in the valve body, the first end of the diaphragm is sleeved on the movable core, and the second end of the diaphragm is pressed and limited by the valve body to prevent the medium in the valve body from entering the gap between the winding coil and the movable core; wherein a guide portion is formed on the diaphragm, the guide portion is arranged between the first end and the second end, and the diaphragm can elastically deform with the guide portion as the initial yield point. In this way, on the one hand, the movement resistance of the movable core is reduced, thereby reducing the coil power of the winding coil required to drive the movable core; on the other hand, the consistency of the deformation part of the diaphragm is ensured, and the reliability and repeatability of the diaphragm valve are enhanced.

The application relates to the technical field of battery safety testing, and discloses a new energy lithium battery impact testing device, which comprises a base, a rack arranged on the base and a testing guide rod, further comprises a lifting mechanism arranged on the base and a testing mechanism slidingly assembled on the testing guide rod; the testing mechanism comprises a testing plate, the bottom of the testing plate is fixed with a testing seat, and the bottom of the testing seat is fixed with a testing block for planar impact on the lithium battery. The new energy lithium battery impact testing device is provided with an adjusting assembly capable of horizontally adjusting the position, a lifting assembly capable of up-down telescopic adjustment and an impact assembly integrating an impact block and a puncture needle in the testing seat, so that the device can be freely switched among three modes of planar impact, point impact and puncture impact, the overall impact, local point impact and puncture test on the lithium battery can be completed without disassembling and replacing any tool parts, and the diversified and all-round lithium battery safety performance test demand is met.

The application belongs to the technical field of cosmetics, and particularly relates to a maleic acid and ectoine co-crystal as well as a preparation method and application thereof. The application comprises the following steps: mixing maleic acid and ectoine, and adopting a wet grinding process to obtain a maleic acid and ectoine co-crystal; and the molar ratio of the maleic acid and the ectoine is (0.8-1.2):(0.8-1.2). The maleic acid and ectoine co-crystal composition is prepared by the wet grinding method. The maleic acid and ectoine co-crystal can significantly improve the tensile strength of oxidatively damaged hair, and significantly repair the oxidatively damaged hair; and the content of hair ROS caused by photoaging is significantly reduced, and the maleic acid and ectoine co-crystal has a strong anti-photoaging effect. Meanwhile, the co-crystal preparation method is simple, has good repeatability, and is suitable for industrial production.

The application belongs to the technical field of daily chemicals, and particularly relates to a high-temperature and mild alkyl glucoside sulfonate as well as a preparation method and application thereof. The alkyl glucoside sulfonate provided by the application is obtained by using the hydroxyl activity on the glucose unit of glucoside to perform chemical modification, and specifically, the alkyl glucoside is first subjected to intramolecular cross-linking by using 1,3-dichloro-2-propanol, and then subjected to anionization modification by using 3-chloro-2-hydroxypropanesulfonate sodium. The alkyl glucoside sulfonate prepared by the application has the advantages of mildness, low irritation, strong hard water resistance, good foaming performance, low skin penetration and small residual amount, can effectively solve the defects of strong penetration, strong deproteinization and delipidation, great damage to skin barrier and weak thickening effect of alkyl glucoside in personal cleaning products, and is very suitable for being widely used and popularized in daily chemicals.

This invention discloses a coherent electrical stimulation method for idiopathic scoliosis combined with exercise therapy, belonging to the field of electrical stimulation methods for idiopathic scoliosis. It aims to address the problem of how to dynamically adjust stimulation parameters based on individual differences to improve treatment efficacy. The method includes acquiring raw image sequences of the patient's spine through MRI scans, preprocessing the raw image sequences to construct a three-dimensional geometric model of the spine, configuring simulated electrical property parameters for the tissue structures, and then adding coherent electrical surface electrodes to the model. The electrode placement area on the three-dimensional geometric model of the spine is initially defined, and a coherent electrical stimulation signal is generated using a function generator. A comprehensive evaluation index value is calculated through finite element analysis to dynamically adjust the coherent electrical stimulation signal. Based on the coherent electrical stimulation signal parameters and its comprehensive evaluation index value, a coherent electrical stimulation scheme is determined, and ultrasound-guided technology is used to locate the electrode positions and implement coherent electrical stimulation therapy.

This invention belongs to the field of molecular biology and medical detection technology, and discloses a bladder cancer-specific nucleic acid aptamer, nucleic acid aptamer derivatives, and their applications. The nucleotide sequences of the nucleic acid aptamer are shown in SEQ ID NO: 1, 2, and 3. This invention screened three monoclonal nucleic acid aptamer DNA chains from bladder cancer tissue samples using the exponential enrichment systematic evolution (SELEX) technique and identified two target proteins that bind to these three nucleic acid aptamers. The nucleic acid aptamers specifically target the target proteins CAPRIN1 and FXR1 on the surface of bladder tumor cells. The nucleic acid aptamers obtained by this invention have advantages such as high affinity and specificity, no immunogenicity, simple chemical synthesis, stability, and ease of storage and labeling, providing a new molecular tool for the early diagnosis and targeted therapy of bladder cancer.

This invention discloses an oxygen evolution catalyst with a surface-sulfurized Co3O4 mesoporous layered nanopile structure and its preparation method, belonging to the field of electrochemical energy conversion and storage technology. The preparation method includes: uniformly mixing Co(NO3)2·6H2O with urea in a certain proportion, and performing hydrothermal synthesis to obtain a layered nanopile precursor; further calcining the precursor in air to convert it into a Co3O4 mesoporous layered nanopile; and then immersing it in Na2S solution to obtain a partially sulfur-substituted surface Co3O4 mesoporous layered nanopile, which serves as the oxygen evolution catalyst. The preparation method of this invention is simple, and the obtained catalyst has a large specific surface area, high conductivity, fast mass transfer, stable structure, and excellent electrochemical activity for oxygen evolution.

The utility model discloses a valve mechanism of micro -fluidic chip, including the upper valve disc of installing in the inside of micro -fluidic chip, the integral molding of a plurality of connecting columns of upper valve disc bottom end and the integral molding of a plurality of connecting column bottom end lower valve seat, the inside of lower valve seat is provided with a plurality of both ends all through to the arc drainage cavity of lower valve seat outside. Upper valve disc, lower valve seat in the utility model are driven by outside micro -motor and rotate in micro -fluidic chip, and the arc drainage cavity in lower valve seat is communicated with the corresponding flow passage in micro -fluidic chip, and the elastic retreat -stopping structure, the anti -slip groove maintain the rotation angle of upper valve disc, lower valve seat.

The application discloses a colloidal cerium oxide polishing liquid and a preparation method thereof, and steps are as follows: S1. Dissolving a soluble cerium salt in deionized water, and respectively dissolving a surfactant, a suspension aid and an imidazole modifier in the deionized water and stirring and clarifying, mixing all the solutions, and performing ultrasonic stirring and high-pressure homogenizer circulation treatment to prepare a modified reaction precursor; S2. Continuously stirring the precursor, adding a precipitant at a uniform speed, and stirring after aging by heating to form a colloidal cerium oxide nanosphere solution with a nanosphere appearance; S3. Centrifuging the solution, washing and freeze-drying the solid to obtain a cerium oxide powder, mixing and stirring the powder and deionized water to disperse, and preparing the colloidal cerium oxide polishing liquid. The polishing liquid has uniform particle size, stable dispersion, a high SiO2 / Si3N4 selection ratio, can reduce wafer scratches, guarantee stable polishing performance, and is suitable for the chemical mechanical polishing demand of a semiconductor wafer shallow trench isolation process.

The invention relates to the technical field of grain and oil by-product high-value utilization and food functional ingredient preparation, in particular to a nitrogen-rich mesoporous carbon-based cholesterol adsorption ingredient as well as a preparation method and application thereof. According to the method, soybean meal and rice bran are taken as a carbon source and an endogenous nitrogen source, and urea or melamine is compounded as an exogenous nitrogen-rich precursor, so that an internal-external synergistic nitrogen-rich system is constructed; the method comprises the following steps: compounding a zinc chloride or potassium hydroxide chemical activator with a ferric chloride catalytic graphitizing agent to form a nitrogen-rich-catalytic synergistic conversion system; the method comprises the steps of raw material pretreatment, nitrogen-rich slurry preparation, catalytic activation precursor preparation and the like. The prepared carbon-based ingredient has a developed mesoporous structure and high-content alkaline nitrogen-containing functional groups, and is large in cholesterol adsorption capacity and high in selectivity, and the raw materials are grain and oil processing byproducts, so that the cost is low, and the carbon-based ingredient is green and environment-friendly; the preparation process has the advantages of controllable parameters and good repeatability, is suitable for industrial production, and provides a new technical path for the development of functional food ingredients for reducing blood fat.

This invention relates to the field of experimental equipment technology, and particularly to an NMR combustion-explosion dynamic load multi-field coupling experimental device and method. The technical solution includes a control module, an impact module, a detection module, and a vibration reduction module; wherein, the control module includes an operating platform, a transmission line, an engine, a fuel tank, an oxygen tank, connecting pipes, a high-temperature resistant fuel nozzle, and a high-temperature and pressure resistant gas sealing pipe; the operating platform is located behind the engine. This invention achieves graded control of dynamic load through combustion-explosion-electromagnetic composite loading, integrates simultaneous detection of multiple physical fields such as nuclear magnetic resonance, acoustic waves, and resistivity, sets up multi-level vibration reduction and dissipation structures to absorb residual kinetic energy, adopts a high-temperature and high-pressure resistant sealing design to ensure safety, simulates ground temperature, ground stress, and pore fluid fields to reproduce the deep in-situ multi-field coupling environment, and is centrally controlled and automatically reset by the operating platform, thereby realizing a laboratory simulation of deep dynamic disasters with flexible and adjustable parameters.

The application discloses a dual-energy ray bone density evaluation method based on a flat panel detector and relates to the technical field of ray evaluation.The direct conversion mode of the flat panel detector is used to realize high-precision collection of low-energy and high-energy ray images, and noise and resolution loss caused by traditional indirect imaging are significantly reduced;one-time and two-time corrections are completed in an edge computing node, the problem of gray scale discontinuity and energy ratio distortion in the joint area of bones and soft tissues is effectively solved, and the authenticity of the image boundary is improved;further dynamic smoothing processing of the energy ratio is combined to obtain a stable ratio image, the stability and repeatability of bone density measurement are significantly enhanced, and more accurate bone density evaluation is realized.

The application discloses a semiconductor thin film deposition process intelligent recommendation system and method based on a knowledge graph, belongs to the technical field of semiconductor manufacturing processes, and comprises the following: a semiconductor thin film deposition process knowledge graph construction module; a prompt word template generation module: used for receiving process requirements and constraint conditions input by a user, performing semantic analysis on the process requirements and constraint conditions, filling the analysis results into a preset prompt word template, and outputting standardized instructions meeting the calling requirements of a large language model; and a large language model reasoning module: used for receiving the standardized instructions, performing semantic retrieval and logical reasoning on the standardized instructions within the constraint range of the semiconductor thin film deposition process knowledge graph, generating a plurality of candidate thin film deposition process schemes meeting process constraint conditions based on entity relationships and causal associations in the semiconductor thin film deposition process knowledge graph; and the application constructs a complete process recommendation solution and exhibits significant advantages in multiple aspects.

The present application relates to the technical field of precise time synchronization and trigger control, and particularly relates to a multi-stage system synchronous trigger device and method based on laser pulses. The multi-stage system synchronous trigger device based on laser pulses comprises: a photoelectric detection module, configured to receive laser pulses and convert the laser pulses into initial electrical signals; a constant fraction timing module, connected with the photoelectric detection module, configured to extract a zero-crossing point irrelevant to the amplitude of the laser pulses from the initial electrical signals, take the trigger time of the zero-crossing point as a time zero point, and output a reference trigger signal corresponding to the time zero point; and a trigger signal distribution module, connected with the constant fraction timing module, configured to distribute the reference trigger signal to multiple subsequent devices, so that the trigger time of each subsequent device is traced back to the time zero point.