31 results about "Chromogenic" 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 invention belongs to the technical field of circuit board detection, and particularly relates to a method for detecting, identifying and analyzing residues in a circuit board cavity, which comprises the following steps of: positioning suspected residual areas according to the gray difference of an X-ray image, generating a space coordinate set of the suspected residual areas, screening out a to-be-analyzed area set by combining chemical chromogenic reaction intensity and X-ray contour features, and analyzing the to-be-analyzed area set. The method comprises the following steps of: obtaining a plurality of regions, dividing the regions into a plurality of subsets according to spatial diffusion characteristics, obtaining element and functional group data of each region through energy spectrum and spectral analysis, analyzing candidate residue categories, and dynamically adjusting subset division based on the consistency of the candidate categories in the subsets until the consistency requirement is met. And finally, outputting a specific residue category for each region according to a division result. According to the method, dynamic subset division is carried out according to the space congruency and the contour features, systematic distinguishing and classification of diffusion type residues and attachment type residues are achieved, and the accuracy of category judgment is improved.

A self-cleaning and base line stabilizing device of an automatic nutritive salt analyzer comprises a reaction assembly used for mixing a sample liquid sample, air and a corresponding reaction reagent to complete a chromogenic reaction; the light splitting detector is connected with the output end of the reaction assembly through a first connecting pipe; the cleaning assembly at least comprises a change-over valve, a second connecting pipe and a first peristaltic pump, the change-over valve is arranged on the first connecting pipe and located between the reaction assembly and the light splitting detector, one end of the second connecting pipe is connected with the change-over valve, the other end of the second connecting pipe can be connected with a reagent bottle filled with hydrochloric acid, and the second connecting pipe is sleeved with the first peristaltic pump. According to the method, pollution caused by adsorption of the flow cell can be actively prevented, the whole process only needs short time, baseline drift caused by adsorption of the chromogenic complex is prevented, the working efficiency is remarkably improved, and finally synchronous improvement of the determination efficiency and the data stability is achieved.

The utility model discloses a kind of liquid paper diaper, it is related to paper diaper technical field, including front waist piece, paper diaper body and rear waist piece set in sequence, the paper diaper body includes surface layer structure, absorption layer structure, chromogenic structure and bottom structure, the surface layer structure is provided with through-hole, the absorption layer structure includes first absorption layer and second absorption layer, the first absorption layer is arranged in the outside of surface layer structure, the second absorption layer is arranged in the outside of first absorption layer, first absorption layer and the connecting place of second absorption layer are provided with first flow guide groove, first flow guide groove is provided with first flow guide channel, the chromogenic structure is between second absorption layer and bottom structure. The liquid paper diaper of the utility model can improve water absorption speed and water absorption capacity, and show liquid volume.

The present invention provides a reversible thermochromic composition which exhibits black color upon coloration and colorless color upon discoloration, and has excellent light resistance, by using a fluoran derivative having a specific structure as an electron-donating chromogenic organic compound, and a reversible thermochromic microcapsule pigment containing the reversible thermochromic composition. The means for solving the problem is a reversible thermochromic composition comprising: (a) a fluoran derivative having a specific structure as an electron-donating chromogenic organic compound, (b) a compound having a specific structure as an electron-accepting compound, and (c) a reaction medium which allows the electron transfer reaction between the (a) component and the (b) component to occur reversibly in a specific temperature range, and a reversible thermochromic microcapsule pigment containing the reversible thermochromic composition.

The utility model provides a shading box for chromogenic reaction, which relates to the technical field of shading boxes for chromogenic reaction, and comprises a shading mechanism, the shading mechanism comprises a bottom plate, a box body is arranged at the top of the bottom plate, a top cover is arranged at the top of the box body, a black jacket layer is fixedly connected in one box body, and the black jacket layer is fixedly connected in the other box body. Wherein the bottom of one top cover is fixedly connected with a black cushion layer, and the interior of the other box body is fixedly connected with a white sleeve layer. According to the titration device, the shading mechanism is arranged, so that a detector is not influenced by external light rays during titration chromogenic reaction observation and comparison, a detection result can be more accurate, and meanwhile, the two box bodies and the two top covers are arranged, so that the titration device is more convenient to use. Therefore, the two box bodies and the top cover are fixedly connected with a black sleeve layer, a black cushion layer, a white sleeve layer and a white cushion layer respectively, so that the two box bodies can provide two different detection environments.

The application discloses a chromogenic test paper for detecting aflatoxin and a preparation method thereof. The method adds montmorillonite to Fe(OH)3 colloid and mixes, and drops the mixture on a nitrocellulose membrane and waits for it to dry. The mixed solution of the Fe(OH)3 colloid and the montmorillonite in the application has an adsorption effect on the aflatoxin, forms a color block under the particle agglomeration effect, and realizes visual detection of the aflatoxin.

The application relates to the technical field of cosmetic detection, and particularly discloses a test paper card for detecting boric acid and / or borate in cosmetics and a detection method. The test paper card for detecting boric acid and / or borate in cosmetics comprises an activated sample pad, a functional reaction film and a PVC bottom plate which are sequentially attached, the activated sample pad is a glass fiber membrane soaked by a pretreatment reagent, the functional reaction film is a nitrocellulose membrane coated by a chromogenic reagent, the functional reaction film comprises an attaching area and a chromogenic area, the activated sample pad is located in the attaching area, and the chromogenic area is exposed to the environment. The application can be used for detecting whether boric acid and / or borate is contained in cosmetics, and can improve the sensitivity and stability of the detection of boric acid and / or borate in cosmetics.

The invention relates to the technical field of chemical analysis, and discloses a water quality ammonia nitrogen rapid detection system and method based on an intelligent terminal and machine learning, and the method comprises the following steps: mixing a to-be-detected water sample with a Nessler reagent to carry out a chromogenic reaction to obtain a chromogenic to-be-detected sample; performing flash lamp differential image acquisition on the to-be-tested color developing sample by using image acquisition equipment of an intelligent terminal to obtain an ambient light image and a flash lamp image; extracting color features from the same region of interest of the ambient light image and the flash lamp image, and constructing a combined feature vector; and inputting the combined feature vector into a pre-trained machine learning model to obtain one or more ammonia nitrogen detection results of the to-be-detected chromogenic sample. According to the invention, the interference of ambient light and equipment difference is effectively overcome by utilizing a flash lamp differential acquisition technology and a machine learning algorithm, expensive instruments or light boxes are not needed, and low-cost and high-precision portable ammonia nitrogen detection is realized.

The invention relates to the technical field of biological detection reagents, in particular to a preparation process of an anti-interference urine trace protein and urine creatinine double-chromogenic detection reagent, which comprises the following steps: dissolving a composite buffer agent in deionized water at 20-38 DEG C, stirring and dissolving, and adjusting the pH value of the system to 7.0-7.3; adding a composite anti-interference agent, an EDTA-2Na masking agent and enzymes in sequence, continuously stirring, and controlling the temperature of the system not to exceed 38 DEG C; independently preparing an improved BCA color developing agent and a copper sulfate auxiliary color developing agent, mixing and standing; adding the color developing system into the buffer solution system, adding a compound stabilizer, stirring and standing; by adopting a multi-enzyme synergistic composite anti-interference system and combining the synergistic effect of the masking agent, the influence of various interfering substances in urine can be effectively shielded, and non-specific reaction between the interfering substances and a detection system is avoided.

The present disclosure provides for porous polymer materials that include an ordered array of voids separated by a polymer framework. The porous polymer material can have a recovery state where the voids are in an uncollapsed state and iridescent color, and a deformed state having voids in a collapsed state that is non-iridescent or substantially transparent. The materials can have regions of both states simultaneously. Also described are methods for fabricating a polymer material as above, as well as chromogenic sensors including the polymer material. The sensors can have hidden anti-counterfeiting patterns, hydrophobic / oleophobic properties, and chromogenic transformation can be triggered by various stimuli such as solid target compounds, light energy, and more.

Provided herein are methods for fabricating a porous polymer material, methods for revealing hidden anti-counterfeiting patterns, chromogenic sensors having hidden anti-counterfeiting patterns, and the like. Chromogenic sensors including porous polymer materials are provided. The chromogenic sensors can reveal hidden patterns such as anti-counterfeiting patterns and the pattern can be re-hidden.

The invention discloses heavy metal developing test paper based on a carbon quantum dot composite material as well as a preparation method and application thereof, and belongs to the technical field of heavy metal detection. The heavy metal chromogenic test paper comprises a quantitative filter paper substrate, a composite indicator and a colloid protection layer, wherein the composite indicator is prepared from a silk fibroin-anthocyanin compound, fluorescent carbon-based quantum dots and rich-pore carbon nitride, and is loaded on the substrate through mesoporous silicon balls; and the colloid protection layer is a mixed colloid solution of a masking agent and a sensitizer. The preparation method comprises the following steps: independently preparing the components, constructing the composite indicator, loading the meso-porous silicon balls and coating the protective layer. According to the invention, on-site rapid semi-quantitative detection of cadmium ions and ferric ions in soil or water can be realized, the operation is simple and convenient, the cost is low, and on-site screening requirements are met.

This invention provides a water-color-changing material, a water-color-changing indicator, and a colorant that develop color upon contact with water, exhibiting a deep color when colored, showing good color development even with a small amount of water, and maintaining its color over time. [Solution] A water-color-changing material, a water-color-changing indicator, and a colorant comprising a porous material containing a water-color-changing composition comprising an electron-donating chromogenic organic compound, an electron-accepting compound, and an amide compound and / or an imidazolidinone compound. Furthermore, the amide compound may be an amide compound of a specific structure, and the imidazolidinone compound may be an imidazolidinone compound of a specific structure.

This invention belongs to the field of isotope analysis technology, specifically relating to environmental tracing and geochronological studies of the cosmogenic nuclide beryllium-10. It discloses an automated collection device and method for purifying the cosmogenic nuclide beryllium-10. The device constructs an automated chain of online reaction, real-time monitoring, and intelligent diversion, eliminating reliance on manual solution collection experience. The mixed reaction module precisely proportions the eluent, buffer solution, and chromogenic solution, creating a specific instantaneous chromogenic environment for beryllium ions. Combined with an optical detection module, it can capture color signals in real time and convert them into digital signals. The control module drives the fluid switching module at millisecond levels based on preset signal thresholds, accurately separating the target product from the waste liquid. This mechanism can accurately identify the start and end points of the elution peaks of the target element, solving the problem of beryllium-10 loss caused by complex sample matrices or resin aging. Through standardized photoelectric detection, it ensures high recovery rates and purity requirements for ultra-trace beryllium-10 analysis.

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 discloses a boiler denitration flue gas ammonia escape detection system and detection method, and belongs to the technical field of ammonia escape detection, the boiler denitration flue gas ammonia escape detection system comprises a flue gas sampling and pretreatment unit, a reaction and color development unit, an image acquisition unit, and a processing and control unit; the reaction and color development unit comprises a reaction tank A, a reaction tank B, a color developing agent storage unit, a double-channel injection pump and a color development reaction adjusting unit; a color developing agent is stored in the color developing agent storage unit; the image acquisition unit comprises two high-speed industrial cameras which are used for respectively and synchronously acquiring reaction images of the reaction tank A and the reaction tank B under equal shooting conditions; the processing and control unit is used for analyzing and processing reaction images of the reaction tank A and the reaction tank B, eliminating apparent interference of particulate matters reacted in the reaction tank B and chemical inhibition interference of chromogenic reaction, and obtaining a final ammonia escape index If which is evaluated to approach to the real ammonia escape concentration in the flue gas. The method is faster and more accurate in judging whether ammonia escape exists or not and whether the ammonia escape exceeds the national specified standard or not.

Provided herein are methods for fabricating a porous polymer material, methods for revealing hidden anti-counterfeiting patterns, chromogenic sensors having hidden anti-counterfeiting patterns, and the like. Chromogenic sensors including porous polymer materials are provided. The chromogenic sensors can reveal hidden patterns such as anti-counterfeiting patterns and the pattern can be re-hidden.

The utility model discloses a special thin-layer chromatography developing box for a laboratory, which comprises a developing box, a control panel is arranged at the upper end of the outer surface of the front end of the developing box, a thin-layer plate is arranged in the developing box, and a placing mechanism is arranged at the lower end of the thin-layer plate. The placing mechanism comprises a bracket, an antiskid plate, an exhaust fan, a fixing frame, a first limiting groove, a T-shaped pulling plate, a frame body, a filtering plate, a deodorizing plate, a side plate, a rubber pad, a clamping groove, a clamping plate, a limiting block, a second limiting groove, a spring and a hole groove; and the exhaust fan is located in the middle of the outer surface of the upper end of the color developing box. According to the special thin-layer chromatography developing box for the laboratory disclosed by the utility model, the anti-skid plate can be used for increasing friction, reducing the influence of sliding and falling of the thin-layer plate on placement, conveniently removing a reagent smell and reducing the environmental pollution caused by peculiar smell, acid-resisting, alkali-resisting and corrosion-resisting treatment is carried out on the inner wall of the developing box, the developing box is convenient to clean, and the frame body is convenient to mount, dismount and replace; and a better use prospect is brought.

The application discloses a kind of based on recyclable composite nanometer colorimetric sensor array Freshness detection method of fresh food, belong to colorimetric sensing, olfactory visualization and information intelligent processing technical field.Through the proportion of regulation material realizes optimal dyeing film condition and reaction effect, through the reduction speed of porous material adjustment colorimetric sensing unit reaches the recyclable use of colorimetric sensor array, according to the construction of colorimetric sensor array builds flow line scanning equipment, in combination with a variety of algorithms carries out data filtering, contour detection and feature extraction, in combination with national standard volatile base nitrogen determination method constructs Freshness CARS-PLS quantitative evaluation model of fresh food, the chromogenic mechanism and recyclable mechanism of color array and fresh food are analyzed, realize accurate, specific and sensitive indirect detection to Freshness of fresh food;The application expands olfactory visualization detection to color-sensitive sensing field, in combination with recyclable colorimetric sensor technology, gas information is presented as image color, convenient for information intelligent processing.

The invention discloses an LDHA enzyme activity detection method based on an MTS color development system. According to the method, a standard substance and a sample to be detected are respectively mixed and reacted with a buffer solution containing excessive pyruvic acid and NADH, then MTS and a phenazine electron mediator are added into a reaction system, and residual NADH is reduced into formazan capable of absorbing visible light at 490 nm, so that weak NADH change is amplified into an end point signal which is easy to detect and high in reproducibility, and the detection sensitivity is high. And substituting the end point signal of the to-be-detected sample into a standard curve constructed by the enzyme activity of the standard substance and the end point signal of the standard substance to obtain the LDHA enzyme activity of the to-be-detected sample. According to the method, the detection sensitivity of LDHA can be improved by about 2-3 times, background interference is remarkably reduced, the method is suitable for high-throughput drug screening and large-scale sample detection, and a sensitive and reliable detection means with industrialization potential is provided for the fields of tumor metabolism research, LDHA targeted drug screening, clinical metabolism marker detection and the like.

This invention provides an image registration method and system. The image registration method includes: focusing a scanning beam emitted by an OCT system onto the surface of a chromogenic sample and displaying it as a microscopic image by a microscopic imaging unit; changing the galvanometer voltage of the galvanometer unit in the OCT system to change the scanning path of the scanning beam on the chromogenic sample surface; obtaining the coordinates of feature points in the OCT scanning path in the microscopic image, and the galvanometer voltage corresponding to each feature point to construct a mapping matrix; and performing matrix inverse operation using the mapping matrix and the pixel coordinates of the center point of the target OCT scanning area in the microscopic image to obtain the galvanometer voltage corresponding to the center point of the target OCT scanning area. This invention addresses the problems of insufficient registration accuracy and high calibration difficulty in existing image registration methods, and can meet the clinical needs for real-time high-precision display of the OCT scanning area and its corresponding B-scan image during surgery.

The present invention relates to a chromogenic radiative cooling element comprising a liquid crystal layer including a cholesteric liquid crystal that includes a reactive mesogen compound and a chiral dopant and has a pitch in the range of 50 nm to 550 nm, thus maintaining excellent cooling performance while producing various colors.

Disclosed in the present utility model is a low-power-consumption display mechanism applied to a low-energy-storage device, comprising a circuit board assembly, a storage battery, and a low-power-consumption display screen. The low-power-consumption display screen comprises a top transparent electrode layer, a chromogenic particle layer, and a bottom electrode layer; a plurality of chromogenic particles are arranged in the chromogenic particle layer; the chromogenic particles include positively charged chromogenic particles and negatively charged chromogenic particles having different color settings; and when an electric field is applied to the interlayer area between the top transparent electrode layer and the bottom electrode layer, the chromogenic particles are driven by the electric field to move in corresponding directions, in the electric field, having polarities opposite to those of the chromogenic particles. In the present utility model, the low-power-consumption display screen consumes electricity only when changing display content; and the display content can be retained for a long time, could not disappear even though power is off, and is clear and visible even under strong light. This design significantly reduces energy consumption by reducing frequent electric field applications, and is suitable for use on various low-energy-storage devices.

This invention belongs to the field of LAMP detection reagent technology, specifically relating to a fluorescence / colorimetric dual-mode LAMP detection reagent, its preparation method, and its application. The fluorescence / colorimetric dual-mode LAMP detection reagent of this invention comprises: BST DNA polymerase, magnesium sulfate, potassium chloride, phenol red, BSA, mannitol, trehalose, a mixture of dNTPs, a DNA-binding fluorescent dye, and ammonium sulfate. This fluorescence / colorimetric dual-mode LAMP detection reagent of the present invention simultaneously contains a phenol red colorimetric system and a SYBR Green I fluorescence system, allowing the same reaction tube to be read using a fluorescence instrument or observed visually. It eliminates the need to pre-select reagent types based on the detection scenario, providing the flexibility of "one tube, two modes" to adapt to more diverse detection needs. By introducing ammonium sulfate as a reaction enhancer, the different requirements of the two reading modes for the ionic environment are balanced, achieving "dual excellence" in both fluorescence signal and colorimetric effect.

The utility model discloses a novel anti-fake bottle cap which comprises an upper cap body, an inner cap body is connected to the lower portion of the upper cap body in a screwed mode, a bottom cap body is connected to the lower portion of the inner cap body in a screwed mode, a connecting screw rod is fixedly arranged in the middle of the lower portion of the upper cap body, a scraping rod is fixedly arranged at one end of the lower portion of the upper cap body, and an anti-fake code is fixedly arranged on the upper portion of the upper cap body. A transparent dustproof cover is fixedly arranged above the anti-counterfeiting code; interaction and intuition are added for anti-counterfeiting verification through combination of the scraping rod and the pigment film, a consumer rotates the upper cover to enable the scraping rod to rotate in the annular groove, so that the pigment film is scraped, dyeing pigment flows out and is stained on developing paper, and an anti-counterfeiting characteristic which is difficult to copy is provided.

The utility model provides portable quantitative detection equipment for volatile substances in blood, which belongs to the technical field of detection and comprises a shell with a detection channel. The detection tube comprises a sample adding tube and a color developing tube, and a transmission channel is arranged between the sample adding tube and the color developing tube; the image sensor is mounted in the shell; the main control board is electrically connected with the image sensor, and the pixel value is converted into a concentration value through the main control board; the display screen is mounted on the surface of the shell, and the concentration of a detection substance in the current detected blood sample can be displayed through the display screen; and the power supply is arranged in the shell, and the power supply is electrically connected with the main control board. The device is simple in structure, small in size and convenient to carry, the concentration of volatile detection substances in a blood sample to be detected can be accurately calculated through matching of the main control board and the image sensor, and data are reliable.

The invention relates to the technical field of microbiological detection, and discloses an enzyme substrate chromogenic detection kit for high-salt-tolerant microorganisms in chemical raw materials and a reaction condition optimization method, the enzyme substrate chromogenic detection kit comprises the following components: a specific enzyme substrate which can be hydrolyzed by a specific enzyme secreted by the high-salt-tolerant microorganisms to produce a chromogenic product; the color developing agent is used for carrying out color developing reaction with the enzyme substrate hydrolysate, and the color developing agent can be kept stable in a high-salt environment and enables the hydrolysate to present a specific color in a visible light range; a buffer solution. Through combination of a specific enzyme substrate and a color developing agent, high-specificity detection of the secretase of the high-salt-resistant microorganisms is realized, and the high-salt-resistant microorganisms and other microorganisms can be effectively distinguished even in a complex chemical raw material high-salt environment. Meanwhile, the optimized reaction conditions ensure high sensitivity and quick response in the detection process, the detection time is greatly shortened, and the detection efficiency is improved.

The utility model relates to the technical field of grain and oil detection, in particular to a portable grain and oil detection device which comprises a test box, the bottom of the inner wall of the test box is fixedly connected with a supporting frame, the bottom of the inner wall of the test box is fixedly connected with a protective seat, and the bottom of the inner wall of the test box is fixedly connected with a limiting seat. The top surface of the test box is rotatably connected with a box cover, the top surface of the test box is fixedly welded with anti-skid supporting legs, the top surface of the box cover is fixedly welded with a handle, and the inner wall of the box cover is fixedly connected with a clamping seat. The detection card is fixed through the limiting clamping groove, so that an oil sample and a reagent are subjected to a chromogenic reaction in the test groove, the deterioration degree is judged by comparing a colorimetric card, the illumination lamp is used for supplementing light through the light-transmitting groove in a dark environment, the uniform chromogenic effect is ensured, the storage device of the detection card adopts a spring supporting structure, and the remaining card automatically moves upwards after one detection card is pulled out; and continuous and automatic feeding is achieved, and subsequent extraction detection is facilitated.

The invention relates to the field of biological agents, particularly discloses an immune color developing reagent for detecting malignant tumors in urine and application of the immune color developing reagent, and is used for solving the problems that in bladder cancer urine exfoliated cell detection, an acridine orange single staining color developing image is poor in bladder tumor specific epitope recognition, heavy in background interference and high in spectrum overlapping and manual interpretation subjectivity. The color developing reagent comprises a reagent A, a reagent B, a reagent C and a reagent D. The reagent A is provided with an antibody complex and acridine orange aiming at tumor cell target antigens of bladder parts in urine shedding, and the reagent B comprises a fluorescently-labeled secondary antibody composition and an enzyme-labeled secondary antibody-tyramine deposition amplification composition corresponding to the reagent A, and the reagent D is provided with an enzyme-labeled secondary antibody-tyramine deposition amplification composition corresponding to the enzyme-labeled secondary antibody-tyramine deposition amplification composition corresponding to the reagent D. In the application, AI imaging analysis is adopted, and layered identification labels and acridine orange dyeing negative and positive labels are calibrated; through multi-target immune color development, two sets of color separation amplification schemes and AI imaging analysis, the bladder tumor specific epitope recognition capability, the image quality and the image analysis accuracy of urine cast-off cell detection are improved.