48 results about "Fluorescent tracer" patented technology

The invention relates to the technical field of medical instruments, and discloses a breast cancer sentinel lymph node positioning system and method, and the system comprises a data collection subsystem, a space positioning subsystem and a central processing subsystem. The method comprises the following steps: acquiring an anatomical structure image, a radioactivity counting rate and fluorescence intensity after performing primary fluorescence, radioactivity and secondary pulse type fluorescence tracer injection in sequence; establishing a global coordinate system and generating an anatomical region of interest; constructing a weighted directed topological graph based on the initial fluorescence data, and obtaining a baseline flow velocity; extracting radionuclide dynamic characteristics based on the radioactive data; a functional flow rate attenuation coefficient is calculated based on the second pulsed fluorescence data. And a multi-factor scoring model is applied, topological information, dynamic characteristics and functional flow velocity attenuation coefficients are fused, and a comprehensive score is calculated to identify the sentinel lymph node. According to the method, the lymphatic flow topological structure, nuclide dynamics and functional flow velocity information are combined, and the positioning accuracy and reliability are improved.

The utility model relates to the technical field of sports safety, in particular to an anti-drowning armlet which comprises a wearing assembly, an inflation assembly, a monitoring assembly and an early warning assembly. A monitoring assembly for monitoring the motion condition of a user and the surrounding environment is installed on the side, close to the user, in the wearing assembly, and an early warning assembly for early warning is installed on the surface of the outer side of the wearing assembly. Through mutual cooperation of the wearing assembly, the inflation assembly, the monitoring assembly and the early warning assembly, when too many factors possibly causing drowning exist in the swimming process of a user, the user can keep away from the drowning factors by himself or herself or call others to help keep away from the drowning factors through early safety warning, drowning events are avoided as much as possible, and the safety of the user is improved. In addition, once an actual drowning event occurs, the air bag can be automatically popped up to emerge from the water surface, and the fluorescent tracer agent is used for tracing the drowning event to a rescued person to find the drowning event.

The invention discloses a flow measurement device and method based on a fluorescent tracer time-difference method, and relates to the technical field of flow measurement based on the fluorescent tracer time-difference method, and the device comprises a tracer injection unit which comprises a tracer liquid storage cavity, a control pump / valve and an injection hole; the double detection units comprise a first fluorescence detection unit, a second fluorescence detection unit, a signal processing and control unit and a pressure liquid level unit. The first fluorescence detection unit and the second fluorescence detection unit are located on the two sides of the axial distance of the injection hole, and the distance is L. According to the tracer agent release time T0, the fluorescence signal appearance time t1 and t2, the high-concentration wave peak time T1 and T2 and the fluorescence signal curve, the water flow direction is judged, the flow speed is calculated, and meanwhile the flow is measured according to the liquid level data of the pressure liquid level unit.

The application provides a fluorescent tracing method and an aqueous zinc ion battery, wherein the fluorescent tracing method comprises the following steps: firstly, a fluorescent electrolyte solution is prepared, the fluorescent electrolyte solution contains a TPE-based fluorescent tracer, the TPE-based fluorescent tracer is a TPE derivative formed by introducing different functional groups into a TPE molecular skeleton, and the TPE derivative comprises an olefin group and a polar group; and secondly, the aqueous zinc ion battery containing the fluorescent electrolyte solution is subjected to a constant current deposition stripping mode to perform long-term cycle testing on the battery. In the long-term cycle testing of the battery, the tetraphenyl ethylene derivative with the aggregation-induced emission characteristic is introduced, the zinc ion migration, deposition and stripping behavior can be directly observed by means of the fluorescent signal of the tetraphenyl ethylene derivative, and the zinc element distribution and dynamic change are directly presented. This breaks through the limitation that the traditional method is difficult to directly capture the zinc electrode interface reaction, and provides intuitive visual evidence for understanding the electrochemical mechanism of the zinc ion battery.

This invention provides a tracer-type compound scale inhibitor based on benzofuran fluorescent agents, its preparation method, and its application. In the tracer-type compound scale inhibitor, the mass ratio of scale inhibitor to benzofuran fluorescent agent is (20-100):1; the benzofuran fluorescent agent is [6-hydroxy-2-(2-hydroxy-4-oxocyclohexyl-2,5-diene-1-yl)benzofuran-3-one]; the scale inhibitor is selected from acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and / or ethylenediaminetetramethylene phosphate sodium. The benzofuran fluorescent agent of this invention combines real-time concentration detection and scale inhibition performance, exploring the potential of fluorescent tracers in water treatment. Due to the synergistic effect between BD and PAA, the tracer-type compound scale inhibitor prepared by this invention exhibits good fluorescence stability and excellent calcium carbonate scale inhibition rate, allowing for widespread application in circulating cooling water systems and other fields with relatively low dosage.

The invention provides a joint detection system and method for leakage of a carbon dioxide storage tank, a terminal and a medium, a sensor network is constructed to cover a monitoring area, and the system comprises gas flow sensors arranged at an outlet of the storage tank and a conveying pipeline, and a carbon dioxide concentration sensor and a fluorescence detection sensor which are arranged at key points around the storage tank and the pipeline. And a trace fluorescent tracer agent is attached to the monitoring area. Leakage is preliminarily judged according to data collected by a gas flow sensor, if leakage occurs, the data collected by a carbon dioxide sensor and a fluorescence sensor are utilized, a Gaussian diffusion model and a fluid dynamic model are combined, the change direction of fluorescence intensity and carbon dioxide concentration is calculated, a leakage point is accurately positioned, and the leakage amount is calculated. The leakage severity is judged according to the gas flow and the carbon dioxide concentration, an alarm is triggered, and the leakage point position and the leakage amount are transmitted to a control center. The system integrates the fluorescent tracer and various sensors, realizes real-time accurate positioning of leakage points, and has the advantages of high sensitivity, fast response, strong applicability and the like.

This invention discloses a slope soil aggregate erosion and disintegration testing device, belonging to the field of geotechnical engineering testing technology. The device includes: a model box assembly, a rainfall simulation assembly, an optical observation assembly, and a runoff collection assembly. The model box assembly includes a box body and a slope adjustment mechanism. The slope adjustment mechanism uses multiple hinged plates in conjunction with a hydraulic drive device to achieve precise adjustment of the slope angle in segments. The uppermost layer of the filling area inside the box body is divided into several tracer zones, each tracer zone being covered with a soil layer containing different colored fluorescent tracers. The rainfall simulation assembly simulates natural rainfall processes. The optical observation assembly includes a light shield, an ultraviolet light source, a camera, and a filtering system to achieve fluorescence imaging. The runoff collection assembly uses a sampler to collect sediment samples at different time intervals. This invention can accurately track the soil loss path at different slope locations, enabling visualized observation and quantitative analysis of the soil erosion process, providing a systematic experimental method for studying soil disintegration mechanisms.

This invention relates to a method for visually detecting the interface of a welded joint in thermoplastic composite materials, comprising the following steps: placing a fluorescent tracer film at the interface of two thermoplastic composite components, such that the film covers at least a portion of the interface area, wherein the fluorescent tracer film is a film formed by uniformly doping a thermoplastic resin compatible with the thermoplastic composite matrix resin with nano-sized phosphors; applying energy sufficient to cause local melting and flow of the matrix resin to the interface, causing the fluorescent tracer film and the matrix resin to melt and flow together, and forming a luminescent marker layer fused to the interface after cooling; performing fluorescence imaging on the components after the melt-flow treatment to obtain a fluorescence distribution map of the interface area; extracting luminescence characteristic parameters based on the fluorescence distribution map, and constructing a visual model of the interface.

The invention discloses a method and system for testing wear resistance of a washing machine standard sample, and relates to the field of washing machine performance tests.The method comprises the steps that a regular super-hydrophilic stripe pattern is constructed on the surface of standard washing cloth through a mask spraying technology, and a fluorescent tracer sensitive to mechanical wear is evenly loaded on fibers through an impregnation method; a patterned fluorescence function standard sample is obtained; initially weighing the patterned fluorescence function standard sample, and respectively acquiring an initial appearance image and an initial fluorescence image under a standard light source and ultraviolet light; mixing the patterned fluorescent function standard sample with the standardized simulation piece to form a mixed load; and putting the mixed load into the washing machine for standard washing. The method provides more comprehensive data support for the design optimization of the washing machine by quantifying the function decline and microscopic damage of the fabric, improves the authenticity simulation of the test load, and solves the technical problem that the physical wear and the function characteristic decline cannot be evaluated at the same time in the prior art.

The utility model discloses a kind of foundation pit soil layering permeation and seepage visualization indoor model test box, belong to geotechnical engineering test equipment technical field, comprising: test box main body, multiple layering partition plates are provided in test box main body;Test box main body has at least one transparent front wall;Multiple permeation channels are provided on each layering partition plate, and the channel mouth of permeation channel is provided with electric opening and closing valve;Fluorescent tracer injection system cooperates with the fluorescent tracer injection hole of being set on the side plate of test box main body;Ultraviolet developing module is set with the front wall of test box main body with inclination angle;High-speed camera recording system is set corresponding with the front wall of test box main body;Multi-channel independent water pressure control unit is located at the side of test box main body away from fluorescent tracer injection system;Data acquisition and analysis module is electrically connected with high-speed camera recording system.The utility model can directly reveal piping, seepage erosion and other seepage failure mechanism, provide scientific basis for seepage prevention design optimization.

The application provides a functional temporary plugging material and a preparation method and application thereof. The functional temporary plugging material comprises a degradable matrix and fluorescent tracers as tracer parts; wherein, when the degradable matrix is 100 parts by weight, the amount of the fluorescent tracers is 0.05-5 parts by weight, preferably 0.1-1 parts by weight; preferably, the fluorescent tracers are at least 3 kinds. The degradation degree of the temporary plugging material can be understood by detecting the concentration of the fluorescent tracers in the formation water brought to the ground, the application can effectively eliminate interference factors, obtain a detection result with higher reliability and anti-interference ability, and can assist oilfield fracturing construction.

The invention provides sericin microspheres as well as a preparation method and application thereof, and relates to the technical field of soft substance processing and microfluidics. The preparation method comprises the following steps: (1) taking an aqueous solution containing sericin as an aqueous phase 1; taking water or an aqueous solution containing auxiliary crosslinking components as an aqueous phase 2; (2) introducing the oil phase, the water phase 1 and the water phase 2 into a double-tube injection capillary glass tube microfluidic device, and shearing the water phase 1 and the water phase 2 by using the oil phase to prepare water-in-oil micro-droplets containing sericin; and (3) curing the micro-droplets containing the sericin protein to obtain the sericin protein microspheres. The microspheres are prepared from sericin as a raw material, and the prepared sericin microspheres are uniform in particle size and good in monodispersity, have rich autofluorescence characteristics, can be used as a fluorescent tracing carrier or an imaging material or used for carrying various active substances, omit an exogenous dye loading step, reduce toxicity and have good application prospects.

The application designs a series of xanthene near-infrared mitochondrial fluorescent tracers, the self-assembly characteristics of the dyes are regulated by the length of the external hydrophobic carbon chain, and then the stability of the mitochondrial targeting and the signal-to-noise ratio of the imaging are optimized. The fluorescent tracers show strong NIR fluorescence, the emission wavelength can reach 700 nm, the molar extinction coefficient is 10.9 M ‑1 *cm ‑1 *10 4 , the fluorescence quantum yield is 0.64. In the aqueous phase, the ACQ effect is significant, but it can be quickly enriched and embedded into mitochondria, and then the strong fluorescence is restored, showing high signal-to-noise ratio; in living cells, it has stable mitochondrial targeting, is not affected by the membrane potential, and the imaging performance is better than that of the commercial probe TMRM. The fluorescent tracer can accurately and stably trace the microtubular morphological changes of mitochondria in ferroptosis.

The invention provides a soil aggregate stability analysis method and system, and relates to the technical field of soil quality evaluation.The method includes the steps that after drip irrigation water added with a fluorescent tracer agent is adopted for irrigating soil in a root zone under a film, dry screening is conducted on the soil, and an aggregate with the fluorescent tracer agent after dry screening is obtained and recorded as a target aggregate; loading the mixed fertilizer liquid into the target aggregate round by round, obtaining a permeation signal of the target aggregate under each loading round, determining a stage of the target aggregate under each loading round based on the permeation signal, and setting an instability condition for each type of target aggregate; and continuously loading the target aggregate until the instability condition is met, deriving the loading round times when the target aggregate is unstable, comparing the loading round times with the preset life loading round times, and judging that the stability of the target aggregate is qualified if the loading round times when the target aggregate is unstable are greater than the preset life loading round times.

The invention relates to the technical field of underground engineering grouting, in particular to a flowing water grouting plugging performance quantitative evaluation method based on micro-fluidic fluorescence imaging, which comprises the following steps: calibrating grout with different known concentrations by using a fluorescent tracer agent to establish a quantitative relation model; carrying out a flowing water grouting test in the micro-fluidic chip so as to capture a fluorescence image sequence in the slurry migration and plugging process; inverting the fluorescence image sequence into a slurry concentration spatio-temporal evolution field based on a quantitative relation model; identifying the slurry-flowing water interface in the spatio-temporal evolution field of the slurry concentration, and tracking the dynamic evolution process of the slurry-flowing water interface to calculate the formation time of the slurry-flowing water interface and the spatio-temporal evolution law of the slurry concentration; and calculating a plugging strength index according to the slurry concentration spatio-temporal evolution field and the slurry-flowing water interface forming time, and evaluating the plugging efficiency of the grouting material by using the plugging strength index. Therefore, the problems that in an existing flowing water grouting technology, the plugging process is invisible, and key performance is difficult to quantify are solved.

The present application relates to the field of environmental monitoring and solid waste treatment, in particular to a landfill microplastic migration path visualization detection method based on fluorescence tracing, comprising the following steps: obtaining polyethylene particle samples and screening, screening target particles, laying particles, setting threshold value checking layout and imaging, applying leachate to collect fluorescence images, extracting signals to construct three-dimensional trajectories, and outputting dynamic image integration graph, in the present application, through polyethylene particle screening and fluorescence coating treatment, the particle signal stability and image recognition accuracy are improved, the particles are uniformly laid in the model with layered structure and observation window, and the layout is checked in combination with the coverage area and path connectivity, the trajectory resolvability is enhanced, the fluorescence images are collected at regular time intervals, the light signal area is extracted, and image stacking and three-dimensional positioning are performed, the continuous reconstruction and structural layer position comparison of the particle migration path are realized, and the spatiotemporal recognition ability of the migration behavior and the clarity of the image expression are improved.

The application provides a high-temperature and high-pressure microfluidic fluorescence temperature measurement system and method, relates to the technical field of microfluidic testing, and provides a high-temperature and high-pressure visual environment through a pressure-bearing visual cavity, simultaneously sets a reference temperature zone and a main measurement zone in the chip, and respectively injects fluid containing a fluorescence tracer, so that fluorescence excitation and an imaging assembly can synchronously collect fluorescence image sequences of the two zones, a temperature field inversion module corrects first fluorescence image sequences of the main measurement zone according to second fluorescence image sequences of the reference temperature zone, and generates a temperature field through inversion, fluorescence signal attenuation and drift caused by factors such as excitation light fluctuation, window pollution, accelerated light bleaching and enhanced background stray light in a high-temperature and high-pressure environment can be effectively eliminated, and the technical problem that an inverted temperature field is unreliable due to fluorescence signal distortion in the prior art and is difficult to meet the demand of quantitative research on pore-scale seepage-thermal coupling mechanism is solved.

The invention relates to a liquid leakage detection device combining fluorescent tracing and machine vision, which comprises a fluorescent tracer agent and a cooling liquid, and the fluorescent tracer agent compatible with the cooling liquid is added into the cooling liquid; an excitation light source disposed in the detection area; the image acquisition module captures a fluorescence image in real time; the image processing and analyzing module is used for processing and analyzing the image acquired by the image acquisition module in real time and comprises the steps of background deduction, fluorescence signal extraction, leakage positioning and alarm triggering; and the alarming and recording system is used for alarming and storing leakage information in a database when detecting a liquid leakage signal. The invention further provides a liquid leakage detection method combining fluorescent tracing and machine vision. According to the invention, the sensitivity and the accuracy of liquid leakage detection can be obviously improved, the false alarm rate is reduced, and meanwhile, application requirements in complex environments, such as high-temperature, high-humidity or strong electromagnetic interference environments, can be met.

The invention discloses a permanent magnet synchronous motor rotor eccentricity fault diagnosis method and a detection device, and relates to the technical field of motor fault diagnosis. According to the method, the surfaces of a motor bearing, a stator winding and a stator core are coated with fluorescent tracing coatings with different fluorescent excitation / emission wavelengths and color differences respectively, air gap abrasion particles are collected after operation is conducted for a preset time, and a multi-band fluorescent imaging system is used for obtaining a particle fluorescence spectrum and an internal abrasion image. According to the method, static, dynamic and mixed eccentric fault types are accurately recognized by combining particle types, number proportions, size distribution and wear trace characteristics, the fault severity degree is evaluated through quantitative indexes, and the matched detection device integrates the functions of fluorescent coating, particle collection, fluorescent detection, internal observation and data analysis. The method has the advantages of high detection sensitivity, accurate fault traceability and accurate evaluation, and can realize early diagnosis and state evaluation of the rotor eccentricity fault of the permanent magnet synchronous motor.

The invention relates to the technical field of geotechnical engineering grouting, in particular to a regional grouting slurry diffusion range monitoring method based on a fluorescent tracer agent. The diffusion range and uniformity of the slurry in different areas are accurately evaluated by monitoring the diffusion condition of the fluorescent tracer agent in real time and calculating the diffusion radius. By combining fluorescence signal data and a theoretical model, grouting parameters are dynamically adjusted, it is ensured that grout is evenly put, excessive gathering or insufficient diffusion is prevented, and the precision and uniformity of grouting operation are improved. Dynamic adjustment is carried out by obtaining fluorescence signal intensity and diffusion radius data in real time, and the grouting speed and total amount are controlled and optimized through proportion, integration and differential gain, so that uniform diffusion of grout is ensured. Through fluorescence identification and diffusion uniformity evaluation of a rock debris sample, a variation coefficient and a spatial autocorrelation coefficient are calculated, the diffusion effect is accurately judged, and when non-uniformity is found, supplementary grouting is prompted, and it is ensured that grout covers a preset range.

The invention discloses a silicon material treating agent with a fluorescent tracing function and a preparation method thereof. The treating agent comprises a basic treating agent and a fluorescent agent, wherein the basic treating agent is prepared from nine components including hydroxyl-terminated polydimethylsiloxane, methyl phenyl silsesquioxane resin, n-heptane, ethyl acetate and the like according to a specific mass ratio; the fluorescent agent is a europium-2-thiophenoyl trifluoroacetone-triphenylphosphine oxide complex, the fluorescent agent and new ethyl acetate are firstly mixed and stirred uniformly, then the mixture is added into the basic treatment agent and stirred uniformly, and the mass ratio of the fluorescent agent to the ethyl acetate to the basic treatment agent is (0.5-1.5): (8-10): (1900-2100). The treating agent disclosed by the invention shows red fluorescence under 365nm purple light, can be used for intuitively detecting missing brushing, and has an activation effect on the surface of a silicon material, so that the shear strength and the peel strength of the treated silicon material and a double-sided adhesive tape are high, and the bonding requirement of a new energy power battery buffer material is met.

The invention discloses a three-dimensional diffusion parameter quantification method and device for new and old asphalt and a medium, and relates to the technical field of road material testing. The method comprises the following steps: adding a fluorescent tracer into matrix asphalt to obtain new asphalt, and respectively weighing old asphalt and the new asphalt to form a double-layer structure; scanning the double-layer structure by using a laser confocal microscope to obtain a three-dimensional fluorescence image; segmenting into a plurality of layers of two-dimensional fluorescence images along the depth direction; carrying out optical density correction, gray level conversion and phase inversion operation, and calculating the ratio of the integral optical density of the image to the fluorescence area to obtain the fluorescence intensity; and performing normalization processing on the fluorescence intensity, calculating the fluorescence reduction degree according to the fluorescence intensity difference of two adjacent layers after normalization, and determining the diffusion depth and the diffusion rate of the new asphalt in the old asphalt according to the range of the fluorescence reduction degree. According to the method, the three-dimensional space quantification of the new and old asphalt diffusion behaviors is realized, the limitation of traditional two-dimensional representation is broken through, and the measurement precision of the diffusion depth and rate is remarkably improved.

The invention provides a fluorescence tracing method and a water-based zinc ion battery, and the fluorescence tracing method comprises the following steps: firstly, preparing a fluorescence electrolyte solution which contains a TPE-based fluorescence tracer agent, and the TPE-based fluorescence tracer agent is a TPE derivative formed by introducing different functional groups into a TPE molecular skeleton; the TPE derivative comprises an olefin group and a polar group; secondly, the aqueous zinc ion battery containing the fluorescent electrolyte solution is subjected to a long-term cycle test in a constant-current deposition stripping mode; in a long-term cycle test of a battery, a tetraphenyl ethylene derivative with aggregation-induced emission characteristics is introduced, zinc ion migration, deposition and stripping behaviors can be directly observed by virtue of a fluorescence signal of the tetraphenyl ethylene derivative, and zinc element distribution and dynamic change are intuitively presented. The limitation that zinc electrode interface reaction is difficult to directly capture in a traditional method is broken through, and visual evidence is provided for understanding the electrochemical mechanism of the zinc ion battery.

The invention provides a leak detection method for a fuel cell stack. The leak detection method comprises the following steps: calibrating an initial leak rate state of the fuel cell stack; a hydrogen cavity and an air cavity of the fuel cell stack are filled with deionized water; the hydrogen cavity inlet and the hydrogen cavity outlet are connected through a transparent pipe; the air cavity inlet is connected with the air cavity outlet through a transparent pipe; mixing the fluorescent tracer agent with the cooling liquid in proportion, and then adding the mixture into a cooling loop of the fuel cell stack; an inlet and an outlet of a cooling liquid cavity of the fuel cell stack are respectively connected with a liquid tank through pipelines; adjusting and maintaining the temperature of the liquid tank; blow-drying the fuel cell stack; carrying out air tightness detection on the fuel cell stack and comparing the air tightness with an initial state; and removing the reactor core. According to the application, under the irradiation of a purple light flashlight, a tiny leakage point can be visually and accurately positioned through bright fluorescence emitted by a trace fluorescent tracer agent oozing from a reactor core, and meanwhile, whether the design of the fuel cell stack is reasonable or not can be detected by utilizing a fluorescent tracer method for positioning in cooperation with temperature alternation.

The application discloses a satellite solar wing encapsulating material capable of assisting in defect detection and a preparation method thereof, and belongs to the technical field of encapsulating materials. The encapsulating material comprises an A component and a B component, wherein the A component and the B component are mixed and solidified according to a mass ratio of (0.8-1.2):1 during use; the A component comprises phenyl vinyl silicone oil, phenyl vinyl MQ resin, a defoaming agent, a leveling agent and a platinum catalyst; and the B component comprises phenyl vinyl silicone oil, phenyl hydrogen-containing silicone oil, phenyl vinyl MQ resin, fluorescent tracer nanoparticles, an anti-ultraviolet additive, a tackifier and an inhibitor. The satellite solar wing encapsulating material capable of assisting in defect detection prepared by the application has good transparency, tensile strength, ultraviolet aging resistance and defect assisting detection capability.

A method for monitoring a time-varying fluorescence signal emitted from a fluorescent agent within a medium with time-varying optical properties is provided and includes providing a measurement dataset comprising a plurality of measurement inputs, including at least two measurements obtained from a patient before and after administration of the fluorescent agent. The measurements may include one or more of: a DRex signal detected by an unfiltered light detector during illumination by excitation wavelength light of the first region adjacent to the diffuse reflecting medium; an Flr signal detected by a filtered light detector during illumination by excitation wavelength light; and a DRem signal detected by the unfiltered light detector during illumination by emission wavelength light.The method also includes identifying a post-agent administration portion of the measurement data set; and transforming each Flr signal into an IF signal that represents a detected fluorescence intensity emitted solely by the fluorescent agent.

This application relates to the field of biomedical monitoring technology, and discloses a method, system, and storage medium for real-time monitoring of blood labyrinth barrier permeability. The method includes: acquiring raw signal data and flow velocity measurement data of a fluorescent tracer within the blood labyrinth barrier region; preprocessing these data to obtain a fluorescence signal sequence and a flow velocity data sequence; classifying the sampling segments corresponding to the fluorescence signal sequence according to the flow velocity data sequence to determine high-flow velocity and low-flow velocity segments; differentially processing the fluorescence signals corresponding to the high-flow velocity and low-flow velocity segments to obtain a high-flow velocity compensation sequence and a low-flow velocity integral sequence, integrating them to obtain an overall compensation sequence; separating the flow contribution based on the temporal correspondence between the overall compensation sequence and the flow velocity data sequence to obtain a pure concentration change sequence; calculating the blood labyrinth barrier permeability value based on the pure concentration change sequence, and outputting the permeability monitoring result. This invention can improve the accuracy and real-time performance of blood labyrinth barrier permeability monitoring.

The invention discloses a detection method for guiding the adding amount of a sweetening agent of tipping paper. The detection method comprises the following steps: preparing a CdTe quantum dot solution wrapped by mercaptoacetic acid as a fluorescent tracer agent; preparing a sweetening agent solution, mixing the sweetening agent solution with the quantum dot solution, and fixing the volume to obtain a sweetening agent-fluorescent tracer solution; detecting the fluorescence intensity of the solution, and establishing a linear regression equation of the sweetener concentration and the relative fluorescence intensity; coating base paper with the mixed solution, drying and curing, and detecting the fluorescence intensity on the paper; substituting into an equation to calculate the actual adsorption amount of the sweetener, and guiding the addition amount control. According to the method, the specific CdTe quantum dot is taken as a tracer agent, the correlation coefficient of a linear regression equation is greater than or equal to 0.99, the detection limit is less than or equal to 0.0002 mg / L, and the detection is accurate; and the method can adapt to different production processes, realizes detection and production guidance closed loop, and solves the problem that a traditional method cannot guide production.

The application discloses a kind of based on fluorescent tracer substation fire-fighting pipe network flaw detection method, comprising the following steps: S1: the outer wall of fire-fighting pipe network is cleaned, rusted and dry treated;S2: coating fluorescent response flaw detection coating and curing;S3: fluorescent tracer is mixed with fire-fighting water;S4: start fire-fighting pump, and detection medium is filled into fire-fighting pipe network and maintains design pressure maintaining value;S5: after pressure maintaining, the outer wall of pipe network is checked;S6: if found abnormality is marked, enter S7, if no abnormality is found, fire-fighting pipe network is temporarily defect-free, enter S9;S7: repair the leakage point position marked in S6;S8: return S4 and recheck;S9: complete flaw detection work;The flaw detection method is replaced by radioactive tracer medium by safe fluorescent tracer medium, and using fluorescent response flaw detection coating and optical identification means, realize the rapid positioning and intuitive discrimination of fire-fighting pipe network leakage point position, greatly improve detection efficiency and accuracy.