74 results about "Chemical substance" patented technology

Devices, systems, and methods for measuring properties of liquids or surrounding gasses within a sealed container. Some embodiments of the devices, systems, and methods disclosed herein are useful for determining and monitoring alcohol (ethanol) content of a liquid within a sealed container. Some embodiments are also useful for determining and monitoring additional properties of the liquid within the sealed container, such as liquid depth (volume) and / or presence of trace chemicals and flavor components.

Provided is a detection technique excellent in cell drying resistance, cell retention, and detection of a chemical substance such as an odorant. More specifically, provided are: a laminate containing

This invention discloses a method for detecting the toxicity threshold of a substance based on a rat drinking experiment. The method of this invention includes the following steps: First, a drinking preference experiment is conducted, and then the toxicity threshold is determined: the amount of substance water and pure water consumed in the drinking preference is compared to determine the time when the rat begins to significantly avoid substance water, the mass of the toxic substance in the rat's body at that time is calculated, and the toxicity threshold of the rat is calculated; (3) dose conversion from rat to human: based on the interspecies dose conversion of body surface area, the toxicity threshold of the rat is first converted into the equivalent dose for humans to obtain the acute exposure dose, and then the acute exposure dose is converted into the chronic exposure dose for humans to obtain the substance toxicity threshold. This invention can accurately determine the toxicity threshold: it achieves toxicity assessment of low-dose exposure through spontaneous recognition behavior; it is easy to operate; and it is applicable to the toxicity assessment and non-destructive threshold determination of various substances such as environmental pollutants, chemical substances, and drugs.

A sensor refresh system. The sensor refresh system includes a sensor assembly including a sensing surface. The sensor refresh system includes a sensor attached to the sensing surface of the sensing assembly. The sensor includes a receptor binding a chemical species in a binding state. The sensor refresh system further includes an optical source irradiating the sensor when the chemical species is in the binding state to dissociate the chemical species from the receptor of the sensor in a dissociation state.

A system provides for an ability to automatically identify one or more chemical components of a sample, based on analysis of spectral data by at least one artificial intelligence module. The artificial intelligence module is able to be trained on a plurality of spectral data samples having known concentrations of individual chemicals and elements. The system is further operable to calculate the correlations between spectral data samples of varying concentrations and predict the concentration of the one or more chemical components of the sample.

A system provides for an ability to automatically identify one or more chemical components of a sample, especially a biological fluid sample, based on analysis of spectral data by at least one artificial intelligence module. The artificial intelligence module is able to be trained on a plurality of spectral data samples having known concentrations of individual chemicals and elements. The system is preferably used for spectral techniques such as UV / vis and near-infrared (NIR) spectrophotometry, but is also able to be used for other forms of spectroscopic techniques, including mass spectrometry, infrared (IR) spectrometry, X-ray spectroscopy, Raman spectrometry, or nuclear magnetic resonance (NMR) spectrometry.

The application discloses an underwater hazardous chemical substance containment and disposal device and method based on programmed reaction microspheres in the field of environmental protection and port emergency technology, which comprises a mounting plate fixedly installed on a shore building and a supporting table pre-buried in a riverbed, and an arc-shaped containment plate for presetting a leakage range is arranged on the supporting table, and both ends of the arc-shaped containment plate are connected with sliding assemblies on the mounting plate. The application realizes overall convenient assembly and later maintenance and recovery operation by means of the sliding assemblies, overcomes the defects of slow lifting and floating response speed and slow containment forming lag of traditional similar devices, can realize quick physical isolation and plugging for sudden water soluble hazardous chemical substance leakage, and at the same time, the programmed reaction composite microspheres are accurately sprayed into the containment area to perform deep chemical neutralization and solidification. The application deeply integrates the quick-forming physical containment and efficient and orderly intelligent chemical neutralization process, realizes deep treatment of pollutants and effectively reduces the secondary pollution risk.

This invention discloses a butterfly adult directional attractant based on volatile chemical substances, along with its preparation and application methods. The invention uses a combination of readily available chemical reagents, such as linalool, as volatile signaling substances to efficiently induce various butterfly adults, including the Common Mormon and the Citrus Swallowtail, which use citrus plants (Rutaceae family) as hosts, to complete forward directional movements through flight or walking. This method can induce the synchronized directional movements of multiple butterflies of various species at a relatively low cost, and has significant practical value for human-butterfly interaction projects in ecological landscape construction and recreational experience settings.

A hydrogel comprising a particle physically entrapped within a hydrogel matrix, a method for making the hydrogel, a particle for use in the hydrogel and the use of the hydrogel to sense a chemical species, especially anions in solution. The particle comprises an active material and a plurality of chains of a first polymeric material, each of the chains of the first polymeric material having a first end and a second end. The active material and the first ends of the chains form a core; and the second ends of the chains extend outwardly away from the core to form a shell. The hydrogel matrix comprises chains of a second polymeric material in the form of a three dimensional cross-linked network.

Sensor comprising a housing (10), a window (20, 20´) arranged in the housing (10) and configured to be transparent to infrared radiation, an IR radiation source (30) emitting infrared radiation (IR) from the housing (10) through the window (20, 20´) into the environment of the sensor, an IR sensor element (75) detecting infrared radiation, and a radiation conductor (60, 60´, 60´´) arranged between the window (20, 20´) and the sensor element (75), which supplies the sensor element (75) with radiation entering through the window (20, 20´) and / or reflected at the window (20, 20´´), characterized in that the radiation conductor (60, 60´, 60´´) is designed as a waveguide, the inner surface of which has a coating with a highly reflective material.

The application provides a kind of based on artificial intelligence chemical substance fast identification method and system, belong to intelligent detection analysis technical field;The method includes the preprocessing and structural conversion processing of physical signal and social context information, extracts the physical evidence characteristics and social evidence characteristics of the sample to be measured;According to physical evidence characteristics and social evidence characteristics, through double drive hypothesis generation, the bayesian inference network containing candidate substance hypothesis node, physical evidence node and social evidence node is constructed;Solving the posterior probability value corresponding to each candidate substance hypothesis, according to the posterior probability value and evidence chain analysis result executes decision, generates and outputs chemical substance identification report.The application generates double drive hypothesis by fusing physical signal and social context information, and uses bayesian network to carry out probability inference, which significantly improves the accuracy and reliability of chemical substance identification in complex scene.

Concentrating devices, systems, and methods include those for separating fluids to be sensed (e.g., analytes, such as volatile organic compounds (VOCs) and / or other chemical substances) from other fluid (e.g., a carrier gas, air, etc.) of a fluid mixture received from a target area of a subject's anatomy (e.g., a subject's skin, a wound on a subject, etc.). In some cases, the concentration system may include a housing and a rotor positioned in a compartment of the housing. The housing may receive a fluid mixture in the compartment and rotation of the rotor relative to the housing may separate fluid to be sensed in the fluid mixture from other fluid of the fluid mixture.

This invention discloses a monolithic, high-performance integrated nuclear and chemical gas detector, belonging to the field of nuclear and chemical detection technology. The invention includes a nuclear radiation detection module, a chemical gas detection module, and a central control and processing module. The nuclear radiation detection module and the chemical gas detection module are integrated and both connected to the central control and processing module. The nuclear radiation detection module includes a sampling module and a nuclear data output module, while the chemical gas detection module includes a chemical gas sampling module, a gas analysis module, and a gas data output module. This invention achieves integrated detection of both nuclear radiation and chemical gases. Through modular design and central control coordination, it enables simultaneous acquisition and analysis of nuclear radiation and chemical gases, achieving efficient and integrated monitoring of nuclear and chemical substances. Simultaneously, the integrated detection modules significantly reduce size and power consumption, making it more suitable for portable applications and improving the efficiency and comprehensiveness of early warning in hazardous scenarios.

The utility model relates to a kind of papermaking drying cylinder outer wall cleaning device, cleaning device can be moved to drying cylinder, then according to the height operation of drying cylinder, lift mechanism is operated, lift mechanism drives cleaning mechanism and pollution mechanism to move to suitable position, it is convenient to adhere with drying cylinder outer wall, then operate first linear drive, first linear drive is driven by moving piece to make first scraper and second scraper move to drying cylinder direction, until first scraper and second scraper adhere with drying cylinder outer wall, then operate steam cleaning component, steam cleaning component is sprayed steam to drying cylinder below second scraper part, so that the chemical substance adhered to the part is softened under the action of steam, then operate drying cylinder, make drying cylinder rotate clockwise, softened chemical substance is first scraped by second scraper, then second scraper is scraped second time, so that sewage and stain drop into pollution mechanism and are led out.

This invention relates to the field of textile quality testing technology, specifically disclosing a method and system for evaluating the color fastness of yam-dyed silk fabrics. This invention acquires the microscopic morphology of the surface and the distribution characteristics of internal chemical substances in the yam-dyed silk fabric, quantitatively analyzes the factors influencing color fastness, firstly identifies water-sensitive areas based on surface images and three-dimensional data, extracts groove depth, roughness, and water-stain sensitivity index, and calculates the composite influence factor of surface defects. Simultaneously, it uses energy dispersive spectroscopy and other techniques to analyze the concentration and distribution of unbound iron ions and tannin dyes, obtaining an iron ion migration risk index. Combining the above parameters, a comprehensive color fastness evaluation coefficient is obtained through normalization and weighted calculation. Finally, the color fastness level is determined by comparing it with a preset threshold range. This method integrates physical and chemical factors to achieve a more accurate and comprehensive color fastness evaluation, providing a reliable basis for quality control.

An apparatus 10a comprises a vessel 2 for containing liquid metal which is continuously axially symmetric about a longitudinal axis Z. At least a part of the vessel 2 tapers to an apex and the vessel

The present invention provides a method (100a) and system for controlling the operation of a chemical plant arranged to carry out a chemical process which produces iron and / or manganese in elemental form from respective oxides thereof using liquid sodium as a reductant of the respective oxides and which can also produce an oxide or hydroxide of at least one of calcium, magnesium and iron from a carbonate mineral of at least one of calcium, magnesium and iron. The method (100a) comprises assigning (103a) a respective value to the no. of mol of each one of the chemical species involved in the chemical process as starting materials and products thereof, subject to constraints which are derived from the law of conservation of mass of the constituent elements of those chemical species. The method also assigns (103b) respective values to the nos. of mol of chemical species which are consumed during the chemical process by electrolytic or thermochemical decomposition into their constituent elements, subject to another set of constraints which are derived from the minimum requirements for these constituent elements by the chemical process itself. The former set of constrains allows the materials balance of the process to be controlled and the latter set of constraints allows the energy balance of the process to be controlled. The method then comprises operating (104) the chemical plant to carry out the process according to the values thus assigned. Respective values may be assigned (103a, 103b) to the nos. of mol of a preferred subset of the chemical species involved in the process as starting materials and products thereof and / or a preferred subset of the chemical species which are consumed during the process by electrolytic or thermochemical decomposition into their constituent elements, before values are then assigned to remaining ones of the nos. of mol of other chemical species not in the preferred subset. This allows the chemical plant to be operated in such a way as to optimise its performance relative to such variables as the respective nett amounts of a preferred one or more of the materials it consumes and / or produces, the energy efficiency of a part or the whole of the chemical process and / or its cost effectiveness, for example. Amongst other things, the constraints also ensure that the chemical process always produces less carbon dioxide than instead calcining a carbonate mineral of at least one of calcium, magnesium and iron to produce its corresponding oxide, and that in a large number of cases, it can produce no carbon dioxide at all. Also disclosed is a graphical technique which may be used to assign the respective values to the nos. of mol of the chemical species involved in the chemical process subject to the stated constraints, whereby the method and system of the invention may be implemented.

[Problem] This invention provides a mixture of PLA and CNC that retains the biodegradability inherent in PLA while improving its general-purpose properties without increasing environmental impact. [Solution] The PLA and CNC mixture of this invention is as follows: CNC with a crystallinity of 90% or higher and no chemical modification, consisting only of biodegradable substances, is added to PLA. The CNC dispersed in PLA becomes crystal nuclei, forming numerous crystals, thus forming ligands that span multiple crystals, creating a PLA crystal network structure. This structure improves the physical properties of PLA. The improvement is not achieved by cross-linking or polymerizing PLA into environmentally burdensome substances or other chemical substances, nor by adding environmentally burdensome chemicals. Instead, it is achieved by modifying the crystallinity and crystal structure of PLA by adding biodegradable, non-toxic, and environmentally unburdensome CNC. Therefore, this mixture of PLA and CNC improves the physical properties while maintaining the biodegradability inherent in PLA.

The present invention provides an apparatus (10j) and method for separating different chemical species from each other when they are suspended or entrained in liquid metal as solid particles. The apparatus (10j) comprises a vessel (2) for containing liquid metal. The vessel (2) is continuously axially symmetric about a longitudinal axis (Z), and at least part of it tapers to an apex. The vessel (2) comprises an inlet (4) for the liquid metal having suspended or entrained therein, particles of a plurality of different chemical species of respectively different densities each in solid phase, an underflow outlet (5) for the liquid metal with a majority of particles of a first, denser one of the plurality of different chemical species suspended or entrained therein, and an overflow outlet (6) for the liquid metal with a majority of particles of a second, less dense one of the plurality of different chemical species suspended or entrained therein. The underflow outlet (5) is nearer to the apex of the vessel (2) than the overflow outlet (6). The apparatus (10j) also comprises a first electrode (12) coaxial with the longitudinal axis (Z) of the vessel (2), one or more second electrodes (14) spaced apart from the first electrode (12), and a source (17) of a magnetic field. The first and one or more second electrodes (12, 14) each have a magnetic susceptibility with an absolute value of less than 10-2 to avoid disturbing the magnetic field. They are arranged within the vessel (2) to be immersed in the liquid metal when the vessel (2) contains the same, thereby allowing an electrical current (I) to flow through the liquid metal between the first and one or more second electrodes (12, 14). The magnetic field has a major component which is substantially perpendicular to the flow of electrical current (I) through the liquid metal between the first and one or more second electrodes (12, 14). This generates a Lorentz force acting on the liquid metal, causing it to rotate around the longitudinal axis (Z) of the vessel (2). The method may be conducted using such an apparatus. The speed of rotation of the liquid metal is varied by altering the Lorentz force acting on it until the liquid metal forms a vortex inside the vessel (2), which separates the particles of the different chemical species from each other and directs them to a respective one of the underflow or overflow outlets according to their different densities. If the different chemical species also have different magnetic susceptibilities from each other, the magnetic field can act directly on the particles as well in different manners according to their different susceptibilities, thus enhancing their separation according to their different densities. For example, the liquid metal may comprise liquid sodium and the solid particles may comprise the insoluble reaction products from a redox reaction between the liquid sodium and an ore of iron and / or of manganese, in which the liquid sodium acts on the ore as a chemical reducing agent and excess unreacted liquid sodium acts as a transport medium for the insoluble reaction products.

A shear band that may be used e.g., in a non-pneumatic tire is provided. The shear band uses interlaced reinforcing elements positioned within a shear layer of elastomeric material. A variety of configurations may be used to create the interlaced positioning of the reinforcing elements including e.g., a horizontal diamond or vertical diamond configuration. The shear layer formed from a rubber composition having a very low hysteresis reinforced with silica and carbon black and one or more anti-reversion chemical selected from 1,3 bis((3-methyl-2,5-dioxopyrrol-1-yl)methyl)benzene (CAS No.: 119462-56-5) and hexamethylene 1,6-bis(thiosulphate), disodium salt, dihydrate (CAS No.: 5719-73-3).

The application provides a deep high-mineralization mine water full-cycle control chemical plugging method and system, and the method comprises the following steps: step one, water sample collection and detection and basic index monitoring of the environment; step two, carrying out simulation test to determine the water quality of the backfill water; step three, screening three kinds of filter materials for removing iron ions and manganese ions in the backfill water, and determining the optimal ratio; step four, determining the main chemical substances of the backfill plugging through indoor test; and step five, selecting an acid agent, calculating the dosage and accurately removing the chemical precipitate; in the application, starting from the full cycle of deep backfill of high-mineralization mine water, after fully revealing three fundamental reasons for causing chemical plugging caused by deep backfill of high-mineralization mine water, the method for controlling the water quality before backfill, pre-treatment of the backfill water and rapid removal of chemical plugging in the backfill is proposed, and the risk of chemical plugging during backfill is maximally controlled.

An electrode measuring the presence of an analyte is described as one embodiment. The electrode includes a working conductor with an electrode reactive surface and a first reactive chemistry that is responsive to the analyte. The electrode further includes a first transport material that enables flux of the first analyte to the first reactive chemistry and a second transport material that supplies a reactant to the first reactive chemistry. Wherein the first reactive chemistry does not contact the electrode reactive surface while at least partially shadowing a portion of the electrode reactive surface.

This application relates to the field of integrated circuit manufacturing and discloses a wafer processing technology, including: obtaining a wafer after back cleaning; cleaning the back side of the wafer with an alkaline solution to neutralize the acidic substances remaining on the back side of the wafer after back cleaning; and performing photolithography on the wafer after cleaning with the alkaline solution. This application cleans the back side of the wafer with an alkaline solution before performing photolithography on the back side of the wafer after back cleaning. The alkaline solution can neutralize the acidic substances remaining on the back side after back cleaning. Because the acidic substances remaining after back cleaning are neutralized and removed, even if there are chemical residues at the edge of the back side after photolithography, white crystal defects will not be generated at the edge of the back side of the wafer, improving wafer quality and avoiding the risk of subsequent wafer breakage. Furthermore, this application also provides a wafer with the above advantages.

The present invention provides a method (100a) and system for controlling the operation of a chemical plant arranged to carry out a chemical process which produces iron and / or manganese in elemental form from respective oxides thereof using liquid sodium as a reductant of the respective oxides and which can also produce an oxide or hydroxide of at least one of calcium, magnesium and iron from a carbonate mineral of at least one of calcium, magnesium and iron. The method (100a) comprises assigning (103a) a respective value to the no. of mol of each one of the chemical species involved in the chemical process as starting materials and products thereof, subject to constraints which are derived from the law of conservation of mass of the constituent elements of those chemical species. The method also assigns (103b) respective values to the nos. of mol of chemical species which are consumed during the chemical process by electrolytic or thermochemical decomposition into their constituent elements, subject to another set of constraints which are derived from the minimum requirements for these constituent elements by the chemical process itself. The former set of constrains allows the materials balance of the process to be controlled and the latter set of constraints allows the energy balance of the process to be controlled. The method then comprises operating (104) the chemical plant to carry out the process according to the values thus assigned. Respective values may be assigned (103a, 103b) to the nos. of mol of a preferred subset of the chemical species involved in the process as starting materials and products thereof and / or a preferred subset of the chemical species which are consumed during the process by electrolytic or thermochemical decomposition into their constituent elements, before values are then assigned to remaining ones of the nos. of mol of other chemical species not in the preferred subset. This allows the chemical plant to be operated in such a way as to optimise its performance relative to such variables as the respective nett amounts of a preferred one or more of the materials it consumes and / or produces, the energy efficiency of a part or the whole of the chemical process and / or its cost effectiveness, for example. Amongst other things, the constraints also ensure that the chemical process always produces less carbon dioxide than instead calcining a carbonate mineral of at least one of calcium, magnesium and iron to produce its corresponding oxide, and that in a large number of cases, it can produce no carbon dioxide at all. Also disclosed is a graphical technique which may be used to assign the respective values to the nos. of mol of the chemical species involved in the chemical process subject to the stated constraints, whereby the method and system of the invention may be implemented.

The present application relates to the field of bio-agriculture technology, and specifically to a biogas collection and separation device, which comprises a separation tank, a detachable closing plate is installed on the top of the separation tank, a driving element is installed on the inner bottom of the separation tank, a top-turning element is installed at the lower end inside the separation tank, biogas is transported from the gas valve port into the sealed cover and the inside of the separation tank, so that the biogas passes through the conical precision filter plate and the filter element in turn, through the cooperation of the conical precision filter plate and the filter element, the impurities and other chemical substances in the biogas can be separated and purified, during which, the separated biogas is extracted by the air pump and is transported again into the sealed cover through the backflow pipe, so as to realize the circulation flow of the biogas, and further realize the circulation separation of the biogas, at the same time, the biogas is monitored in real time by the integrated monitoring box, so that the biogas is purified to the maximum extent, the purification quality is improved, and the possibility of the biogas after separation and purification not meeting the standards is reduced.

There is an innovative cockroach killer consisting of two active chemical substances (one in salt form composed of sodium ions and bicarbonate ions, and the other in powdered sugar form). Their chemical formulas are NaHCO3 ( fig.2) and C12H22O11 ( fig.1), respectively and are available in powder form or in specific plastic trapping containers. The product in question is placed in indoor and outdoor areas. The sweet taste of the first chemical substance C12H22O11 attracts the cockroach to taste it; taking a small dose, the above substance passes through the salivary glands and liquefies; after liquefaction, the second chemical substance NaHCO3 starts to act and expand internally in the cockroach's gastrointestinal system, causing swelling and immediate extermination of said insect.

This invention discloses an organoid droplet generation device based on a microfluidic chip and its usage method, belonging to the field of droplet microfluidics. It solves the technical problems of poor droplet consistency and chemical demulsification damaging cell viability in existing droplet microfluidic technologies. The device includes a microfluidic chip comprising a continuous phase injection channel and a dispersed phase injection channel connected by converging channels. A droplet collection tube is located at the bottom of the outlet of the droplet solidification zone. The droplet collection tube has a conical internal structure and a sieve at its bottom opening. This invention achieves oil and water phase separation through physical filtration and rinsing via the sieve at the bottom of the droplet collection tube, avoiding stress damage to organoid cells caused by chemical substances. It can prepare high-throughput organoid droplets with extremely low sample consumption, and the generated organoids have high consistency, which is beneficial for simultaneously screening multiple anti-tumor drugs.

This invention discloses a method and application for detecting diazepam based on ratio Raman signals, belonging to the field of food safety and chemical detection technology. The method involves mixing an Au@4-NTP@Ag@ZIF-8 composite material solution with the sample solution to be tested, then dropping the mixture onto a substrate. A Raman spectrometer is used to acquire spectral data at an excitation wavelength of 532 nm, and the intensity ratio I is calculated. 1590 / I 1107 Substitute diazepam concentration to intensity ratio I 1590 / I 1107 The concentration of diazepam in the sample was calculated using a standard curve. The detection method of this invention exhibits high selectivity for diazepam and is unaffected by interference from macromolecules such as proteins, lipids, and glucose, as well as small molecule chemicals in complex matrices. It enables trace, rapid, and accurate detection of diazepam residues in aquatic products, and has significant application prospects in practical scenarios such as port clearance and on-site law enforcement.

The application discloses a dangerous chemical substance intelligent question and answer method and system based on CAS structured retrieval, which comprises the following steps: obtaining question data; performing semantic analysis on the question data to generate a structured SQL query instruction; constructing a hierarchical database, performing CAS hierarchical retrieval by using the structured SQL query instruction, and recalling authoritative information of dangerous chemical substances; constructing a constraint prompt word, jointly coding the user question, the authoritative information and the scene by using a large language model, and generating a constrained dangerous chemical substance management and emergency suggestion; and through a semantic analysis mechanism of "keyword extraction, question classification and SQL classification construction", combining a hierarchical retrieval strategy taking CAS number as an anchor point and a large language model assisted normalization CAS query mechanism, stable mapping of diversified names of dangerous chemical substances to unique CAS numbers is realized, retrieval difficulties and generation inaccuracies caused by diversified names of dangerous chemical substances and fuzzy questions are effectively relieved, and the accuracy, stability and traceability of information retrieval and scenario-based suggestion generation of dangerous chemical substances are improved.

The application provides a chemical delivery system and method, a carrier gas inlet is connected with a vaporizer through a first carrier gas branch, and the carrier gas inlet is connected with a first valve and a second valve through a second carrier gas branch; the first valve is connected with a front-stage pipeline, and the second valve is connected with a reaction cavity; the vaporizer is connected with a liquid chemical delivery system through a liquid chemical delivery pipeline; the vaporizer is connected with a third valve and a fourth valve through a thin film deposition pipeline; the third valve is connected with the front-stage pipeline, and the fourth valve is connected with the reaction cavity; the first valve and the fourth valve are used for being opened when chemical vapor is delivered and being closed when purging is performed; the second valve and the third valve are used for being opened when purging is performed and being closed when chemical vapor is delivered. Therefore, the application can quickly input a large amount of chemical into a reaction cavity through the quick switching among the four valves, and meet the demand of thin film deposition with complex microstructure.