68 results about "Colorimetry" patented technology

The invention discloses a soil in-situ nitrogen, phosphorus and potassium measuring system based on a digital colorimetric method, which comprises a base and an upper computer, and a monitoring box is arranged on the base through a support column; a colorimetric assembly and a data acquisition assembly acting on the colorimetric assembly are arranged in the monitoring box; an energy assembly is arranged on the monitoring box, the data acquisition assembly is electrically connected with the upper computer and the energy assembly, and a water supplementing assembly and an extraction assembly are arranged on the side wall of the monitoring box; the extraction assembly is communicated with the colorimetric assembly; a developing colorimetric method is introduced through the water supplementing assembly, the extracting assembly and the colorimetric assembly, the data collecting assembly is supported through the energy assembly, developing data are collected and transmitted to the upper computer to extract color information, and rapid and accurate determination of nitrogen, phosphorus and potassium in soil can be rapidly achieved without an electrode sensor.

An inkjet printing apparatus includes: a positional displacement amount calculation unit configured to, during printing processing, calculate a positional displacement amount of printing paper in a paper width direction based on colorimetric data obtained by colorimetry of a color chart by a colorimeter; a colorimeter movement mechanism configured to move the colorimeter; and a colorimeter movement control unit configured to control an operation of the colorimeter movement mechanism based on the positional displacement amount calculated by the positional displacement amount calculation unit.

The invention discloses an RGB-LED spectrum closed-loop system for colorimetry teaching and a color matching method. The system comprises a multi-source input module, a spectrum database module, a dynamic modeling module, an optimization algorithm engine module, a duty ratio calculation module, a PWM driving module and a closed loop verification module. The system is provided with a multi-source input interface, target color coordinates can be obtained, and chromaticity conversion of RGB input is supported; on the basis of the constructed high-precision linear model, solving a normalized strength ratio under constraints by combining an optimization algorithm engine and taking minimization of chromatic aberration as a target; calculating an actual PWM duty ratio according to the actual PWM duty ratio; meanwhile, a spectral irradiation sensor is integrated to collect a mixed color spectrum in real time, actual color coordinates are calculated, and an offset connecting line with an arrow between a target point and an actual point is dynamically drawn in a chromaticity diagram, so that a set of complete visual teaching tool is formed. Compared with a manual color matching scheme, the color mixing precision and the color matching efficiency are greatly improved, and the teaching requirements of colorimetry can be better met.

The invention belongs to the technical field of preparation and rapid detection of composite materials, and particularly relates to a construction method and application of a high-sensitivity fluorescent probe for rapidly analyzing acrylamide in high-temperature processed food. According to the method, acrylic acid-N-succinimide ester (NAS) is grafted on carbon dots (CDs) and grows into a europium-based fluorescent metal organic framework (Eu-MOF) in situ, a ratio type fluorescent probe capable of being used for high-sensitivity detection is constructed, and compared with traditional technologies for detecting acrylamide in high-temperature processed food through liquid chromatography, enzyme-linked immunosorbent assay and the like, the ratio type fluorescent probe has the advantages that the ratio type fluorescent probe can be used for high-sensitivity detection; the method has the advantages of high sensitivity and high detection speed. The constructed ratio-type fluorescent probe can weaken the interference of external factors, has the advantage of strong anti-interference capability, and can improve the reliability of an analysis result; meanwhile, a visualization method is adopted, colorimetry is combined with a smart phone, and the method is easier to obtain by the public, so that the practical applicability is improved, and the application prospect is wide.

The present application provides a machine learning-based external standard-free sample quantitative detection method, characterized in that it comprises the following steps: (a) adding the sample on a medium carrier or into a detection kit, and imaging the sample; (b) automatically analyzing the image signal of the sample image and predicting the sample concentration result by using a trained machine learning model; and (c) outputting the sample quantitative result. By combining the concept of traditional colorimetry with popular machine learning methods, an intelligent device algorithm is developed, making it possible to have a more convenient and rapid sample detection scheme compared with traditional colorimetry.

A colorimetry device includes a support base having a support surface for supporting a measurement target and a carriage to which a colorimeter is detachably attached and that is configured to move in a first direction, which is a direction along the support surface, and in a second direction, which is a direction along the support surface and which intersects the first direction, the colorimeter being configured to measure color of the measurement target, wherein the carriage includes, on an inner wall of an accommodation section that accommodates the colorimeter, a contact surface that is in contact with a side surface of the colorimeter when the colorimeter is attached or detached and a friction coefficient μ1 between the contact surface and the side surface of the colorimeter is smaller than a friction coefficient μ2 between the housing of the carriage and the side surface of the colorimeter.

A water integrity control and disinfection method and system that measures key water parameters and can diagnose water integrity instability trends that result in loss of water integrity. Relevant water parameters that are predictive of water integrity such as cell null value as measured by in-line colorimetry provide early warning and prediction of problematic trends in the water integrity so that the system can pro-actively respond appropriately and prevent, mitigate or reverse the instability trend and maintain microbiological control of the water supply.

1. The name of the design product: colorimetric device. 2. The use of the design product: used to determine the color of the solution to be tested when detecting water quality by colorimetry. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: combined state perspective view 1. 5. Other circumstances that need to be explained: the appearance design of the assembly product is requested to be protected; the product includes two assemblies, assembly 1 is a color matching frame, assembly 2 is a reagent box, and assembly 2 includes assembly 3 and assembly 4, assembly 3 is a box cover, and assembly 4 is a box body; the box body is made of transparent material; since the partial view of assembly 3 and assembly 4 cannot clearly show the lines of assembly 3 and assembly 4 under the same scale, the A-A sectional view of assembly 3, the left view of assembly 4, and the right view of assembly 4 are submitted.

The invention discloses a determination method for improving the accuracy of special acrolein and reductants thereof, and relates to the technical field of determination of special acrolein and reductants thereof, and the determination method comprises the following steps: sucking 40% of a glycerin solution, injecting the glycerin solution into a colorimetric tube, and adding 10% of an ammonia water solution and 10% of a silver nitrate solution to form a sample solution; absorbing 0.005% of glucose solution, injecting into another colorimetric tube, and adding 10% of ammonia water solution and 10% of silver nitrate solution to form a standard solution; putting the two colorimetric tubes into a water bath at 61-62 DEG C without being covered with plugs; inserting a thermometer into the sample solution, taking out the thermometer when the temperature reaches 60 DEG C, and keeping in a dark place for 10 minutes; taking out the colorimetric tube, respectively pouring the two solutions into two clean and dry cuvettes, carrying out colorimetry by taking distilled water as a reference and adopting a spectrophotometric method, and comparing the absorbance of the standard solution and the absorbance of the sample solution. The accuracy of the measurement result can be improved.

To provide a technique for performing scanning and colorimetry of a pattern by one time conveyance of a printing medium without rewinding.SOLUTION: The recording device includes a transport control unit that performs transport control of the print medium, a printing unit that prints a first pattern and a second pattern including overlapping gradation ranges on the print medium in one transport, a first measurement unit that measures the first pattern of the print medium transported in first transport control, and a second measurement unit that measures the second pattern of the print medium transported in second transport control. After printing the first pattern, the printing unit prints the second pattern such that a distance between the second measurement unit and the second pattern at a start time point of switching from the first transport control to the second transport control is equal to or larger than a transport distance by which the printing medium is transported during switching from the first transport control to the second transport control.SELECTED DRAWING: Figure 3

The invention discloses a method for ratio type colorimetric detection of perchlorate. The method comprises the following steps: performing specific surface modification on gold nanoparticles, constructing a methylene blue functionalized gold nanoparticle (MB (at) AuNPs) colorimetric probe, inducing a particle aggregation effect by utilizing specific interaction between perchlorate and MB (at) AuNPs, triggering red shift of a localized surface plasma resonance absorption peak of the probe, and detecting the concentration of the MB (at) AuNPs. And a 523 nm (dispersed state characteristic peak) and 660 nm (aggregation state characteristic peak) dual-wavelength absorption signal is formed. Ratio-type quantitative analysis is realized by calculating the ratio (A660 / A523) of the absorbance of the two wavelengths, and the defect that single-signal detection is easily influenced by environmental fluctuation and system condition change is effectively avoided. Based on the response characteristics, a dual quantitative relation between the ratio of the concentration of the perchlorate to the absorbance and the ratio of the color intensity of an image collected by the smart phone is further established, and an ultraviolet-visible spectrophotometry-smart phone image analysis dual-mode detection system is constructed. Wherein the detection limit of the spectrum detection mode is 2.77 [mu] M, and the detection limit of the smart phone auxiliary detection mode is 5.63 [mu] M. The method is simple and convenient to operate, does not need a large-scale analytical instrument or complex sample pretreatment, has the advantages of good sensitivity, stability and visual discrimination, can quickly realize on-site screening and accurate quantification of perchlorate in water and food samples, and is high in practicability and wide in popularization prospect.

The application discloses a kind of based on bimetallic nanometer enzyme paper-based colorimetric detection mycotoxin method and application, method includes first preparing bimetallic nanometer enzyme UiO66-NH2@Pt / Pd, then nucleic acid aptamer modified UiO66-NH2@Pt / Pd is loaded on paper-based chip, different mycotoxin concentration sample is added dropwise to carry out reaction, then add color developing agent containing TMB and H2O2 and carry out color developing reaction, utilize smart phone to identify color intensity and obtain RGB value, select the linear curve of the highest fitting degree between mycotoxin concentration and RGB value as mycotoxin detection standard curve, then according to the RGB value of measured sample, the content of mycotoxin is detected.The method of the application has the advantages of low cost, simple operation, rapid response, strong anti-interference ability, wide detection range, can be used for on-site detection, etc., can be applied to detect the residue of mycotoxin in environment and food.

A display device that includes: a glass substrate comprising a refractive index (nsubstrate); a display device structure coupled to the substrate to collectively define a viewing area; and a black mask structure surrounding the display device structure that is coupled to the substrate and comprises a black ink layer and at least one glossy layer between the black ink layer and the glass substrate. The viewing area is characterized by (a) a reflectance from 0.5% to 2.5% as measured at 8 degrees from normal in the visible spectrum, (b) a brightness in the CIE colorimetry system such that 5<L*<17 for the specular component included (SCI), and (c) a brightness in the CIE colorimetry system such that 0<L*<3 for the specular component excluded (SCE). Further, the at least one glossy layer comprises a refractive index (nglossy) such that |nglossy−nsubstrate|>0.1.

The invention discloses a flow cell for long-optical-path colorimetry, a long-optical-path colorimetry device and a long-optical-path colorimetry method. The discharge of bubbles can be realized under the condition that an additional mechanical subsystem or a vacuum device is not added. Specifically, when bubbles exist in the liquid to be detected, the bubbles are attached to the top of the cavity or discharged from the third channel under the action of buoyancy, or the bubbles seep out through the tube wall of the liquid core waveguide tube under the pressure of the injection pump. Due to the extremely low influence of the bubbles on the light path in the condition, scattering and absorption errors caused by the bubbles are reduced, and the sensitivity and accuracy of long-optical-path colorimetry are remarkably improved.

The invention belongs to the technical field of pesticide residue detection, and discloses a grape wine pesticide residue judgment method which comprises the following steps: putting a grape wine sample into an initial detection device, carrying out rapid colorimetry and metal screening to obtain a comparison result, and analyzing a qualified grape wine sample and a grape wine sample needing to be detected according to the comparison result; treating a wine sample to be detected by adopting an extraction process to obtain a wine sample to be detected; introducing a to-be-detected wine sample into the detection device for multi-instrument detection, and inputting detection parameters into the pre-training model to obtain pesticide residue parameters; and comparing the pesticide residue parameters based on the standard parameters, and outputting a comparison result of the wine sample. A grape wine sample is rapidly detected by using colorimetry and metal screening to determine whether the grape wine sample meets related standards or not. A plurality of detection instruments are used for common detection and mutual verification is carried out, so that the detection accuracy is improved.

The utility model discloses a test tube colorimetric structure, including base, the base top is equipped with baffle, still be equipped with test tube area and colorimetric card area through the baffle separation of base top, be equipped with the test tube movement structure of test tube area location, still be equipped with the colorimetric card limiting portion of colorimetric card area location, be equipped with the first light source of the test tube of the illumination in test tube area, be equipped with the second light source of the illumination of colorimetric card in colorimetric card area. The utility model provides a test tube colorimetric structure, when carrying out colorimetry to test tube and colorimetric card, and it is not easy to appear the problem of partial color, and the colorimetry accuracy is higher.

The application discloses a sky color modeling method based on the relationship between brightness and color coordinates, which combines the solar elevation angle and the azimuth angle to solve parameters by fitting and analyzing the measured sky surface unit brightness and the corresponding color coordinates calculated based on spectral information, and finally establishes a model capable of representing the sky color distribution, so that the model with color information is established to improve the application of the sky model in the field of colorimetry. The model provided by the application estimates the real-time sky spectral data variation rule, provides a theoretical reference for building lighting simulation with spectral selective glass, and the color coordinates are more scientific and accurate than the correlated color temperature.

The utility model discloses a bile colorimetric assembly which is characterized by comprising a colorimetric disc, a bile recovery hole is formed in the center of the colorimetric disc in a penetrating mode, and a plurality of contrast color bands with different colors are evenly arranged on the upper surface of the colorimetric disc around the bile recovery hole. Diagnosis result marks in one-to-one correspondence with the contrast colored tapes are arranged on the upper surface of the colorimetric disc on the outer sides of the contrast colored tapes, a developing filter paper sheet hermetically covers an upper-end orifice of the bile recovery hole, a lower-end orifice of the bile recovery hole is connected with a bile recovery box, and the developing filter paper sheet is used for adsorbing dropwise added bile and presenting the color of the bile. And the bile recovery box is used for collecting excessive bile filtered out by the developing filter paper downwards. The device is simple in structure, convenient to operate and capable of accurately and objectively measuring the color of bile through colorimetry and obtaining corresponding disease diagnosis results.

The invention discloses a silver nano-cluster and a preparation method and application thereof, belongs to the technical field of metal cluster materials, and aims to synthesize Ag NCs by taking PEI as a template and ascorbic acid as a reducing agent. The invention also discloses an application of the silver nanocluster in pH sensing. As the pH sensor, the Ag NCs provided by the invention can show obvious fluorescence intensity and absorbance changes along with the change of acidity, so that the Ag NCs can combine the advantages of high sensitivity of fluorescence detection and simplicity, convenience, rapidness and the like of a colorimetric method, and has more obvious advantages compared with other nanoscale pH sensors.

The invention discloses a method for establishing immunochromatography for detecting monkey pox virus based on a MoS2 (at) Au nanosheet. The method comprises the following steps: 1, sequentially adsorbing a Raman report molecule and a monkey pox virus specific antibody on the surface of a MoS2 (at) Au nanosheet to prepare a nanoprobe, and dispersing the nanoprobe in PBST to obtain a nanoprobe dispersion liquid; 2, preparing an immunochromatography test strip; 3, mixing a to-be-detected sample with the nanoprobe to obtain a to-be-detected solution, and applying the to-be-detected solution to the immunochromatography test strip for a chromatographic reaction; and 4, after the chromatographic reaction is completed, signal acquisition is performed on the detection line on the immunochromatographic test strip, and an adopted signal reading mode comprises at least one of visual colorimetry, surface enhanced Raman scattering and photo-thermal detection. According to the present invention, the multi-mode detection can be achieved, the sensitivity is high, and the detection flexibility and the result reliability are substantially enhanced through the design, such that the rapid screening requirement of the base site can be met, and the accurate quantification requirement of the laboratory can be met.

This invention discloses a chromogenic solution and kit for visual colorimetric detection of free ferrous protoporphyrin in cells. The chromogenic solution consists of reagents A, B, and C: Reagent A is prepared with deionized water and contains NaCl, Proclin 300, and glycerol; Reagent B is prepared with an acetate-sodium acetate buffer at pH 4.0 and contains glycerol, Triton X-100, β-cyclodextrin, disodium EDTA, citric acid, ethanol, and 3,3',5,5'-tetramethylbenzidine; Reagent C is prepared with an acetate-sodium acetate buffer at pH 4.0 and contains 2.0-4.0% hydrogen peroxide and 35.0-50.0% ethanol. The chromogenic solution of this invention has a lower background value and can detect the content of free ferrous protoporphyrin in cells within 10 minutes by visual colorimetry, with a detection limit as low as 10 nmol / L. The chromogenic stability is maintained for 12 hours, making it suitable for rapid assessment of cellular pathological conditions.

The invention relates to a method for detecting perfuming uniformity of tobacco leaves and application of the method, and the method comprises the following steps: coating the tobacco leaves with a color developing agent, and collecting images of the tobacco leaves before and after coating; preprocessing of denoising and enhanced comparison is carried out on the image; converting the image from an RGB mode to an HSV or Lab mode, separating a color development area, and performing color space conversion; pixel-level binaryzation is carried out on the image, and threshold segmentation is carried out; carrying out hole filling and deburring on the image to realize morphological cleaning; extracting a developing pixel group from the image, and performing connected domain analysis; and taking the image of the tobacco leaves before coating as blank control, calculating the ratio of the number of color developing pixels to the number of main pixels to obtain the color developing proportion of the tobacco leaves, and judging the tobacco leaf flavoring uniformity according to the variable coefficient CV of the color developing proportion. According to the method, rapid, accurate, efficient, simple and convenient tobacco flavoring uniformity detection can be realized through chemical color development and image processing technologies.

To provide a method for producing a coating composition by which the productivity of the coating composition can be improved.SOLUTION: The method includes a correction value acquisition step of acquiring a correction value which is a color difference between a color by liquid colorimetry of a coating composition and a color by colorimetry of a coating film with respect to a specific color, and a prediction step of predicting a blending composition of raw materials for color adjustment suitable for obtaining a target color by using the color by liquid colorimetry of the coating composition before adjustment and the correction value.SELECTED DRAWING: Figure 1

The present application relates to the technical field of food quality supervision, and particularly relates to a method for rapidly detecting sulfur dioxide in shrimps based on fading technology of addition reaction. The method comprises the following steps: S1, weighing the sample to be measured, adding pure water for homogenization, centrifuging, and obtaining supernatant, which is used as sample extract; S2, taking a test tube, adding V1 volume of sample extract and V2 volume of acetonitrile, shaking, centrifuging, making the upper liquid clear, and taking the upper liquid as positive reference; V2 / (V1+V2)=40-70%; taking another test tube for synchronous operation to make the upper liquid clear, then adding malachite green reagent dropwise, shaking gently, and standing for 4-10 min; comparing the test tube with the positive reference, and judging the content of sulfur dioxide in the sample to be measured according to the fading of the lake blue in the test tube. The present application uses dynamic fading reaction to replace static colorimetric card colorimetry, and avoids the subjectivity and matrix interference problems of color card method, and is especially suitable for rapid detection of shrimp samples.

The invention relates to a method (20) for determining the oxygen concentration (Cox) of a powder (MP) of a metallic material (Mat) having a powder bed shape (PB), said method comprising the steps of: A) Acquiring an image (Im) of at least a portion of said powder bed, said image comprising a set of pixels (P), each pixel having a color coded according to a colorimetric coding comprising three quantities (G1, G2, G3); B) Determining the oxygen concentration of the powder from values ​​of said three quantities associated with pixels of the image, using a predefined calibration function (CFMat), a function of said material, and relating said oxygen concentration to said three quantities. Figure 2

Provided is a method for reducing the influence of hemoglobin in a biological sample, when colorimetry is executed for zinc in the biological sample using a chelate color former. This method enables accurate quantification of zinc in a sample even if the sample is hemolyzed.　When colorimetry is executed for zinc in a biological sample using a chelate color former, a reagent containing at least one of guanidine or a salt thereof and urea is added, together with a masking agent, to the biological sample containing hemoglobin.

The application discloses a sugarcane disease detection biosensing platform based on an entropy-driven DNA nanomachine, application and detection method, which comprises an optical-thermal detection unit Cu2O@Au-DNA of entropy-driven DNA nanomachine signal amplification, an electrochemical / colorimetric detection unit of entropy-driven DNA nanomachine signal amplification, the electrochemical / colorimetric detection unit of entropy-driven DNA nanomachine signal amplification comprises magnetic substrate MB-S4 / S3, biological anode CoV-MOF / AuNPs / GOD, biological cathode CoV-MOF / AuNPs / DNA chain and electrolyte; the electrolyte comprises glucose, methylene blue and PBS buffer solution. The biosensing platform can analyze through three non-interfering modes of electrochemistry, colorimetry and photothermal detection, can effectively verify whether the detection result is a false positive signal, and realizes accurate detection of sugarcane top rot.

The application discloses a yarn photographic colorimetric method and system based on texture feature weighted correction, and belongs to the technical field of computer digital image processing, and comprises the following steps: a photographic colorimetric system is built; a digital image of a yarn sample is shot by using a digital camera; a K-means clustering algorithm is used to segment the image, so as to accurately separate the yarn and the background area; a skeletonization algorithm is used to extract the center line of the yarn; a digital image of a training sample is shot by using the digital camera, and the RGB value of each color block is extracted; a spectral reconstruction matrix is constructed based on the training sample; the spectral reconstruction matrix is used to reconstruct the spectrum of each pixel point in the center line area of the yarn; the chroma data corresponding to the reconstructed spectrum is calculated according to the theory of colorimetry; finally, the texture weighted method is combined, so that the yarn color correction measurement data is obtained. The application overcomes the influence of the existing photographic colorimetric method on the color measurement result, and makes the photographic colorimetric result of the yarn composite real visual perception.

An image forming apparatus having a plurality of imaging units prints, in a case that a print job received from an information processing apparatus is a print job for printing a chart for adjustment, the chart based on the print job, and decides, based on the chart, which of the plurality of imaging units is to be used to perform colorimetry of a printed product on which the chart has been printed. The image forming apparatus changes a conveyance path of the printed product to use the decided imaging unit for the colorimetry of the printed product, and notifies the information processing apparatus of a result of the colorimetry by the decided imaging unit.

The utility model discloses a semi-automatic titration method water sample detection system, and belongs to the technical field of metering equipment, the semi-automatic titration method water sample detection system comprises a shell, the shell comprises a top shell and a bottom shell, the top shell is located above the bottom shell, a through hole is formed in the top shell, the through hole is communicated with the interior of the bottom shell, a display panel is arranged at the top of the top shell, a cuvette is sleeved with the through hole, and the cuvette is connected with the display panel. A stirring magnetic block is arranged in the cuvette, a base is arranged in the bottom shell, a driving motor is arranged at the top of the base, and two groups of magnets are mounted at the output end of the driving motor; the device has the characteristics of small size and portability in use, no structures such as pumps and pipelines are arranged in the device, the size can be very small, the device is convenient to use and carry, and meanwhile, the device also has the characteristics of low requirements on the production process of the device and low requirements on the configuration of used reagents; when the image pair is used for detecting calcium ions, magnesium ions and bicarbonate ions in seawater, the accuracy is better than that of a colorimetric method when a titration method is used for detection.