9485results about "Material analysis by observing effect on chemical indicator" patented technology

The present invention relates to a humidity sensor, and more particularly, to a resistance film-type real-time chromogenic humidity sensor produced with a polyelectrolyte thin film. The humidity sensor according to the present invention is a chromogenic hygrometer in which a polyelectrolyte nano thin film that absorbs moisture is formed on a reflective layer, and the nano thin film varies terms of color and electrical resistance as moisture is absorbed and the thickness varies. The hygrometer according to the present invention is a dual-function hygrometer, the color and resistance of which vary. Provided is the chromogenic hygrometer in which the sensor made using a PSS-b-PMB thin film varies in color between purple, blue, green, yellow, orange, and red according to humidity at a very high response speed of within one minute.

The present invention relates to an electrode drying apparatus and an electrode drying method, and the electrode drying apparatus includes: an oven configured to provide a space in which the electrode is dried and to include a hot air nozzle or an infrared heater; a color coordinate measuring unit configured to be positioned at an outlet of the oven and measure a color coordinate value of an electrode active material layer with respect to the dried electrode; and a controller configured to analyze a drying result of the electrode from the color coordinate value, determine whether the electrode is defective in drying, and control a drying condition of the electrode.

To provide a sample analyzer capable of achieving shortening of a measurement time and improvement of efficiency, in an inspection using a reaction to a plurality of kinds of reaction substances whose measurement ranges are largely different.SOLUTION: A sample analyzer 1 includes: a measurement unit 23 as an imaging device for capturing an image including light reception information based on each reaction between a first reaction substance group comprising a plurality of kinds of reaction substances reacting to a component included in a sample and a second reaction substance which reacts to the component included in the sample and is a different type from a reaction substance included in the first reaction substance group; and a control unit 50 as a control device for analyzing, in the light reception information in the image, the light reception information on the basis of a first determination value corresponding to a first substance group and the light reception information on the basis of a second determination value corresponding to a second substance.SELECTED DRAWING: Figure 10

The invention relates to the technical field of soil remediation, and discloses a remediation treatment method and system for simulating cadmium-contaminated soil and a storage medium. The method comprises the following steps: detecting and analyzing the adsorption performance of the remediation material according to soil cadmium content data to obtain remediation material performance data; based on the soil cadmium content data and the remediation material performance data, carrying out data processing on a pollutant migration rule to obtain pollutant migration characteristic data; carrying out data analysis on the repair material combination by utilizing the pollutant migration characteristic data to obtain material combination effect data; according to the material combination effect data, the repair process is dynamically detected, and repair effect data are obtained; and performing data evaluation on the remediation scheme by utilizing the remediation effect data to generate a cadmium-contaminated soil remediation scheme. According to the method, the performance of the repairing material, the pollutant migration rule and the repairing effect are accurately evaluated, and the scientificity and the reliability of the repairing scheme are improved.

According to the cultural relic mural three-dimensional digital protection and micro-change detection method, non-contact and damage-free image data acquisition and calculation are performed on the mural collection wall painting by using a digital photogrammetry correlation technology, and an orthographic image DOM and a digital surface model DSM of the mural collection wall painting are obtained. Color management is implemented in the links from data acquisition, calculation to result display, so that the color of the obtained digital orthographic image of the mural is consistent with the color of the actual mural. And carrying out fresco disease change analysis detection on the obtained fresco orthoimage and the digital surface model in a combined manner, obtaining the position and the area of the disease change, identifying the type of the disease, and finally outputting a fresco micro-change detection result extraction image. Scientific detection means and evaluation methods are provided for mural protection, and the efficiency of mural protection work is greatly improved. Meanwhile, detection data are analyzed, the change rule of the mural is mastered, the micro change trend of the mural is predicted, and the mural is effectively protected.

The invention discloses an up-conversion nanoprobe for detecting tyrosinase through dual-signal output and application of the up-conversion nanoprobe, and relates to the technical field of nano biological materials, the up-conversion nanoprobe comprises UCNPs, tyramine and iron ions; the UCNPs has a core-shell structure, beta-NaYF4: Yb, Er is taken as a core, and NaYF4 is taken as a shell; according to the up-conversion nanoprobe disclosed by the invention, by integrating the advantages of a fluorescence determination method and a colorimetric method, the dual-signal self-calibration capability is formed; according to the method, the UCL signal excited by near-infrared light is utilized, the detection precision is greatly improved, and an intuitive and convenient method is provided for detection of tyrosinase through colorimetric reaction; and a dual-signal output detection mode effectively relieves signal fluctuation, so that the accuracy and reliability of tyrosinase analysis are ensured.

The invention discloses a reversible background-free hydrogel nanosensor for acetone detection and an intelligent sensing platform, and relates to the technical field of biosensors. The hydrogel nanosensor consists of a hydrogel matrix and an upconversion nanoprobe, and the upconversion nanoprobe comprises upconversion nanoparticles (UCNPs), hydroxylamine sulfate and thymol blue (TB). The invention adopts hydroxylamine sulfate as a specific recognition unit of acetone to construct a reversible luminescent hydrogel probe for acetone detection, and the probe can be reused in multiple detections, thereby reducing the cost of a single detection. In addition, by adopting near-infrared light as an excitation light source, the autofluorescence interference of the hydrogel matrix is ​​effectively avoided, thereby improving the detection accuracy.

The invention relates to the technical field of optical sensing, in particular to a copper-carbon quantum dot nano-enzyme and a preparation method and application thereof. Poria cocos and Cu < 2 + > are taken as raw materials, and the copper-carbon quantum dots with excellent peroxidase activity are prepared by adopting a one-pot hydrothermal method and can be used for sensitively, accurately and selectively detecting glyphosate. Cu < 2 + > is combined with oxygen-rich and nitrogen-rich components in poria cocos to generate an oxidation-reduction reaction, CuCDs with Cu < 2 + > / Cu < + > are obtained, Cu < 2 + > doping changes electron cloud distribution of the CDs, the electron transmission capability of the CuCDs is enhanced, and Cu < 2 + > and the CDs have a synergistic effect to generate three ROS (. OH,. O2 <-> and < 1 > O2), so that excellent peroxidase activity is exerted. The glyphosate is chelated with hydroxyl, amino, carbonyl, carboxyl and Cu on the surface of the CuCDs to occupy active sites, so that the active sites are poisoned, the peroxidase activity of the CuCDs is selectively inhibited, and a powerful choice is provided for simply, quickly, sensitively and selectively detecting the glyphosate.

The invention discloses a reversible background-free hydrogel nanosensor for acetone detection and an intelligent sensing platform, and relates to the technical field of biosensing, the hydrogel nanosensor is composed of a hydrogel matrix and an up-conversion nanoprobe, the up-conversion nanoprobe comprises up-conversion nanoparticles (UCNPs), hydroxylamine sulfate and thymol blue (TB); according to the present invention, hydroxylamine sulfate is adopted as the specific recognition unit of acetone to construct the reversible luminescent hydrogel probe for acetone detection, and the probe can be repeatedly used in multiple detections so as to reduce the cost of the single detection; in addition, by adopting near-infrared light as an excitation light source, autofluorescence interference of the hydrogel matrix is effectively avoided, and the detection precision is improved.

The invention discloses a colorimetric and fluorescent dual-mode nano-enzyme sensor. The colorimetric and fluorescent dual-mode nano-enzyme sensor comprises nano-enzyme, hydrogen peroxide and a colorimetric probe, wherein the nano-enzyme is prepared from ZrCl4, 2-aminobiphenyl dicarboxylic acid and Cu (NO3) 2 by a one-pot method; the colorimetric probe is TMB, can oxidize colorless TMB into blue oxTMB, generates an ultraviolet absorption peak at 652 nm, and has a strong fluorescence emission peak at 405 + / -5 nm. The zirconium-based metal organic framework UiO-67-NH2 with high stability is used as a carrier, Zr < 4 + > sites are replaced by part of Cu < 2 + >, the fluorescent nano-enzyme with peroxidase activity is formed, and the problems that free enzyme is difficult to recover, the stability is low and the like are solved.

A water monitoring device monitors and maintains swimming pool chemistry. The device mixes reagents with water in flowcells. The water chemistry is detected by measuring the light transmitted through the flowcells. The water monitoring device can communicate with computers, servers and mobile computing devices which can store and display the water chemistry information. The reagents can be stored in a replaceable reagent cartridge which can provide reagents for water testing and can be replaced when the reagents need to be replenished.

The invention relates to a cooperative control system and method for a building concrete strength detection robot. The system comprises a control module, a chassis, a lifting mechanism and an operation execution module, the chassis, the lifting mechanism and the operation execution module are electrically connected with the control module, and the control module comprises an upper computer and an embedded controller which are connected through the Ethernet. The operation execution module comprises a concrete strength detection unit, a carbonization depth detection unit, a four-degree-of-freedom execution mechanism and a visual sensing module communicating with the upper computer, and the control module is used for controlling the concrete strength detection unit to perform rebound detection on concrete and controlling the carbonization depth detection unit to perform carbonization depth detection on the concrete. The visual sensing module is used for identifying the to-be-rebounded detection area and the to-be-carbonized depth detection area and reading the carbonization depth value. Compared with the prior art, the method has the advantages that dependence on manual operation is effectively avoided, risks caused by manual operation are reduced, and whole-process automation of concrete strength and carbonization depth integrated detection is achieved.

The invention discloses a self-powered biosensor for double-signal detection of sugarcane pokkah boeng disease, the self-powered biosensor comprises an anode, a cathode and an electrolyte, the anode is a CuCo-MOF / AuNPs / GOD biological anode, the cathode is a CuCo-MOF / AuNPs / DNA chain biosensor, and the electrolyte comprises glucose, MB and a PBS buffer solution. According to the self-powered biosensor, analysis is carried out through two non-interfering modes of electrochemical detection and colorimetric detection, and whether a detection result is a false positive signal or not can be effectively verified. An external power supply is not needed, and real-time outdoor detection can be realized. The material source is wide, the assembly process is simple, and accurate and rapid detection can be realized. The method has the advantages of high sensitivity, good selectivity and real-time detection, and can be used for accurately detecting the sugarcane pokkah boeng rot.

The invention discloses a method for detecting glufosinate-ammonium residues in coffee in dual modes of colorimetry and chemiluminescence, and belongs to the technical field of chemical analysis and detection.The method comprises the steps that Schiff base formed by 4-aminoantipyrine and glutaraldehyde serves as a complexing agent of Cu < 2 + >, and then a copper-doped carbon dot Cu-CDs nano-enzyme is prepared through microwave digestion; according to the present invention, the Cu-CDs nano-enzyme has excellent peroxidase-like activity, can oxidize the colorless 2, 2 '-biazo-bis-3-ethylbenzothiazoline-6-sulfonic acid into the blue-green oxidized ABTS, and can improve the chemiluminescence intensity of the reaction of N-(4-aminobutyl)-N-ethylisoluminol and H2O2 by nearly 100 times when the Cu-CDs nano-enzyme is used as the chemiluminescence catalyst; based on the inhibition effect of glufosinate-ammonium on the activity of Cu-CDs POD, a sensitive and rapid colorimetric and chemiluminescence two-channel GM detection technology is developed, and the method has potential application value in the aspect of coffee safety monitoring.

The invention relates to a preparation method of Pt monatomic nano-enzyme and application of Pt monatomic nano-enzyme in cardiac troponin I. The preparation method comprises the following steps: 1) ultrasonically dispersing cobalt salt, selenium powder, chloroplatinic acid, urea and sodium chloride in an alcohol solvent, heating and stirring until the solvent is completely volatilized to obtain a solid mixture, and grinding the solid mixture into powder; and 2) placing the powder in a heating device, carrying out Joule heat treatment in an air atmosphere, washing a reactant, and carrying out vacuum drying to obtain the Pt monatomic nano-enzyme. Se doping is introduced in the one-step chemical reaction process to construct oxygen vacancies, rapid heating and structural shaping are achieved in combination with Joule heat treatment, the Se-doped Co3O4-loaded Pt monatomic catalyst is obtained, the oxygen vacancies and Se doping sites are synergistically used as anchoring sites, Pt monatomic atoms are effectively fixed, and the loading capacity and dispersity of the Pt monatomic atoms are improved. The obtained material shows excellent POD-like enzyme activity, can be used for constructing a high-sensitivity colorimetric immunoassay system, and realizes rapid and accurate detection of cTnI.

The invention discloses application of an RNF130 activator in preparation of a medicine for preventing and / or treating ischemic heart disease, and belongs to the technical field of biological medicine. Research results show that when an RNF130 activator is given in a mouse of a myocardial ischemia reperfusion injury model, the left ventricular ejection fraction and the left ventricular short-axis shortening rate of the mouse can be improved, myocardial tissue pathological injury can be relieved, the protein expression levels of NOX-2, BAX and TNF-alpha are reduced, the myocardial infarction area is reduced, and myocardial cell apoptosis is reduced; therefore, the RNF130 activator has prevention and treatment effects on the myocardial ischemia-reperfusion injury, that is, the RNF130 activator can be used as an effective component of the medicine for preventing or treating diabetes complicated by myocardial ischemia-reperfusion injury, and a new strategy is provided for preparation of the medicine for preventing and treating myocardial ischemia-reperfusion injury.

The invention discloses a geological survey soil sampling device capable of laterally sampling, and relates to the technical field of soil sampling. Comprising a sampling drill cylinder part, and a negative pressure back suction part is installed on the sampling drill cylinder part and used for sucking a soil sample in the sampling drill cylinder part; an acid-base detection piece is mounted on the sampling drill barrel part; a traction control piece is mounted on the sampling drill cylinder part and is connected to the acid-base detection piece; the traction control part is used for pulling the acid-base detection part to switch a detection sample; a detection solution preparation part is mounted in the sampling drill barrel part; negative pressure suction work can be carried out by adopting the suction sleeve, and the structure can be prevented from water leakage when sampling is carried out on collapsed or marsh soil under the action of negative pressure; the problems that in the background technology, an existing soil sampling device is inconvenient to separate and sample a soil sample in the center of a sampler and is also inconvenient to carry out negative pressure permeation prevention are solved.

The invention provides a portable water quality detection system based on multi-sensor fusion, self-calibration and image recognition, and relates to the technical field of water quality detection.Water quality parameters are collected through multi-sensor fusion, data are processed in combination with the deep learning self-calibration and image recognition technology, and a comprehensive water quality analysis result is generated; the system integrated communication module uploads data to a cloud end in real time, low-power-consumption power management is achieved, portable deployment of field and emergency scenes is supported, the detection accuracy, intelligence and real-time monitoring capacity are remarkably improved, and efficient water quality safety supervision is achieved.

The invention belongs to the technical field of creatine kinase detection kits, and particularly relates to a creatine kinase detection reagent, a creatine kinase detection kit and application, the creatine kinase detection reagent comprises a buffer solution, creatine phosphate, glycerol, glycerol kinase, glycerophosphate oxidase, peroxidase and a color developing agent, and further comprises a CK activation reducing agent and perfluoro and polyfluoroalkyl substances, the CK activation reducing agent is a sulfur-containing reducing agent. According to the method, the detection accuracy can be improved.

The invention discloses a methyl paraoxon pesticide detection test strip based on oxygen vacancy-cerium dioxide and a preparation method of the methyl paraoxon pesticide detection test strip, and belongs to the technical field of biosensors. The test strip is characterized in that a large amount of oxygen vacancy-cerium dioxide is loaded. The oxygen vacancy-cerium dioxide nano enzyme can show simulated phosphatase activity under specific conditions, and the enzyme activity can cut off P-O and P-S bonds of organophosphorus pesticides and promote methyl paraoxon to be hydrolyzed into a yellow product p-nitrophenol. The detection limit of a nano-enzyme system is discussed, so that the portable visual quantitative detection of the paraoxon methyl pesticide is realized. The test strip established on the basis of the principle can quickly detect paraoxon methyl, has the advantages of simplicity and convenience in operation, high sensitivity, low cost and the like, and provides a new method for instant test of paraoxon methyl pesticide.

The invention discloses a test device and method for blocking rock fractures by a soybean urease induced calcium carbonate deposition technology, the test device comprises a sample, a fracture simulation assembly and a slurry sealing assembly, the sample is composed of an upper rock test block and a lower rock test block; the fracture simulation assembly can simulate two kinds of rock fracture surfaces with different opening degrees. The test sample adopts an upper rock test block made of a transparent material to realize visualization in a test process; the upper shear box and the lower shear box are used for simulating a tension type fracture and a shear fracture surface of a rock, so that the condition that soybean urease induces calcium carbonate to deposit in different rock fracture generation mechanisms to block and reduce permeability of the rock fracture is better tested; when the lower shear box horizontally moves, the lower shear box is sealed through the slurry sealing assembly, and the sealing state can be kept in the shear dislocation of the crack; the device can test the relationship between the soybean urease induced calcium carbonate deposition plugging and permeation reducing effect and the rock fracture type and fracture parameters.

The invention discloses tissue cell activity detection equipment, and relates to the technical field of cell activity detection.The tissue cell activity detection equipment comprises a detection box, a box door is hinged to the outer wall of one side of the detection box, and a culture plate is slidably connected to the bottom of an inner cavity of the detection box; at least four sliding grooves are symmetrically formed in the inner wall of the detection box, a detection person pulls an operation handle to promote a connecting base to slide along the surface of a limiting column, a gear is meshed with a plurality of racks to promote the gear to drive a liquid storage tank to rotate by 180 degrees in a reciprocating mode, and then cell suspension is continuously shunted through a plurality of stop levers. Therefore, the liquid storage tank can be continuously rotated when the cell suspension is dripped, so that the cell suspension can be prevented from being in a static state for a long time to generate a precipitation phenomenon, the cell density distribution of the cell suspension in the holes in the culture plate can be ensured to be uniform, the accuracy and the reliability of a detection result can be improved, and the detection efficiency is improved. The quality of detection data can be improved, and meanwhile, the time and the cost of repeated detection due to inaccurate detection results are reduced.

The invention relates to a method for detecting pyridine in air, a test paper sheet is placed in an air environment to be detected, the color change of the test paper sheet is observed, the pyridine concentration is qualitatively judged or quantitatively judged according to the color change of the test paper sheet, and the test paper sheet is made of a filter paper sheet and a zinc-based organic-inorganic hybrid halide material. According to the method, qualitative or semi-quantitative judgment of the pyridine concentration in the air can be performed by adopting a test paper sheet and a color card or a linear correlation model standard curve graph, so that whether the pyridine content in the air exceeds the standard or not or the exceeding amplitude can be monitored, and the method has the advantages of convenience in operation and more convenience in detection.

A method for analyzing a sample includes introducing the sample into a vessel including a cation-exchange resin, where the cation-exchange resin has a high affinity to one or more interferent species in the sample, directing the sample through the cation-exchange resin to thereby capture one or more interference species in the cation-exchange resin to purify the sample, and releasing the purified sample from the vessel. Additionally, a method for analyzing a sample includes receiving an image depicting a diagnostic test region and a color reference chart, converting a test region image portion of the image to an analytical color space, determining first and second coordinate values characterizing the test region image portion in the analytical color space, and providing a quantitative measurement of an analyte of interest in the sample based on the first and / or second coordinate values and a predictive formula based on the color reference chart.

The invention relates to a Fe monatomic nano-enzyme as well as a preparation method and application thereof. The preparation method of the Fe monatomic nano-enzyme comprises the following steps: dispersing poly-polyphenol spheres in water, adding ferric trichloride, stirring for 10-14 hours, centrifuging, drying, carbonizing, and pickling to obtain the Fe monatomic nano-enzyme. According to the Fe monatomic nano-enzyme as well as the preparation method and the application thereof, the poly polyphenol spheres and the ferric trichloride are taken as raw materials, the Fe monatomic nano-enzyme with different distances between adjacent active centers can be prepared, the preparation method is simple, the cost is low, and the reaction conditions are mild.

The invention relates to the technical field of total phosphorus detection, in particular to a method for determining total phosphorus in water, which comprises the following steps: 1) digestion treatment: adding an oxidant into a water sample to be detected, and then performing microwave digestion treatment to obtain digested water; a molybdate reagent is added into the digested water, then an improved ascorbic acid solution is added, a chromogenic reaction is completed at the set temperature, and the improved ascorbic acid solution is obtained by mixing an ascorbic acid solution and sodium ethylene diamine tetracetate; measuring the concentration: measuring the absorbance value of the obtained color development product by using a spectrophotometer and a long-optical-path cuvette; and drawing a standard curve: using a phosphorus standard solution as a quality control sample, adding a plurality of calibration points in a low-concentration interval of 0.0-0.1 mg / L, carrying out colorimetric determination, and establishing quadratic equation fitting according to absorbance and concentration so as to determine the total phosphorus content of the water sample to be detected, and the method has the advantages of high sensitivity and good accuracy in total phosphorus testing.

The invention discloses a blood fat test card based on a photochemical principle, and belongs to the technical field of in-vitro detection. The blood fat detection card comprises a card body, the card body is provided with a sample adding port, a correction area and at least one test area, the sample adding port is respectively communicated with the correction area and the test area, and the correction area and the test area are respectively provided with an air hole communicated with the outside; the correction area is provided with a reaction film and a hemolytic agent; and the test area is provided with an enzyme layer and an interference removing film corresponding to a to-be-detected item. The photochemical principle is adopted, the reflected light values of the test area and the correction area before and after the reaction are obtained, the luminosity value difference related to the initial concentration and hematocrit of the item to be detected is obtained, the concentration value of the item to be detected is corrected through the luminosity value difference related to the hematocrit, and therefore the corrected concentration value of the item to be detected is calculated. The detection result is more accurate and reliable, and the operation is simple.

A method for analyzing a sample includes introducing the sample into a vessel including a cation-exchange resin, where the cation-exchange resin has a high affinity to one or more interferent species in the sample, directing the sample through the cation-exchange resin to thereby capture one or more interference species in the cation-exchange resin to purify the sample, and releasing the purified sample from the vessel. Additionally, a method for analyzing a sample includes receiving an image depicting a diagnostic test region and a color reference chart, converting a test region image portion of the image to an analytical color space, determining first and second coordinate values characterizing the test region image portion in the analytical color space, and providing a quantitative measurement of an analyte of interest in the sample based on the first and / or second coordinate values and a predictive formula based on the color reference chart.

The invention discloses a multi-component heavy metal spectrum deep learning detection method and system, and belongs to the technical field of analytical chemistry and instrument analysis. According to the method, the UV-Vis spectral difference of multi-component heavy metals is enhanced through a combined chemical probe color development technology, complex nonlinear spectral signals are analyzed in combination with a deep learning model, and the generalization ability of the model is improved through a data enhancement strategy. The system is integrated with a lightweight end-to-end detection platform, is adaptive to low-cost portable equipment, and realizes minute-level multi-component synchronous detection. According to the method, a closed-loop technical path is formed through three core technologies (probe combination, spectrum enhancement and deep learning), the technical bottleneck of a traditional method in a multi-component, small-sample and complex scene is broken through, and an efficient, accurate and low-cost complete solution is provided for heavy metal pollution prevention and control; the method solves the problems of expensive equipment, low detection efficiency and insufficient multi-component analysis capability of a traditional method, and is suitable for scenes of environmental monitoring, sewage treatment and the like.

The present invention provides a method for evaluating urinary system diseases based on urine detection, which belongs to the technical field of urology. The method for evaluating urinary system diseases based on urine detection comprises: adding corresponding reagents to three urine samples in sequence according to a preset time point sequence, and obtaining urine sample images after each addition of the reagents; performing image preprocessing on each acquired urine sample image, extracting image features including color changes, sediment morphology and distribution; establishing a time series feature data set, arranging and combining the image features corresponding to each time point in time sequence; using a pre-trained image recognition model to analyze the image features in the time series feature data set, and obtaining feature vectors; the method can solve the problems of high examination cost, great trauma, long examination time, limited diagnostic accuracy, etc. that the existing means of diagnosing urinary system diseases generally have.