17 results about "Chemical exposure" patented technology

The invention provides a chemical exposure dynamic simulation evaluation method and system for a wastewater treatment process, and the method comprises the steps: firstly obtaining a chemical adding data set and a real-time monitoring data set of a target wastewater treatment process, and then carrying out the dynamic exposure parameter extraction; generating a dynamic exposure parameter set containing chemical diffusion rate, exposure contact time and environment interaction influence parameters, and then performing multi-stage iterative simulation on the dynamic exposure parameter set based on a preset dynamic simulation strategy network; a chemical exposure dynamic simulation result containing exposure concentration distribution and exposure risk probability of each processing node is obtained, exposure risk assessment is carried out according to the chemical exposure dynamic simulation result, and a chemical exposure optimization strategy set containing dosing concentration adjustment, dosing time sequence optimization and emergency response triggering strategies is generated; and feeding back to a wastewater treatment control system so as to dynamically adjust the chemical adding process and realize more accurate and safer wastewater treatment chemical management.

The invention discloses a relay detection device, and belongs to the field of circuit switch testing, the relay detection device comprises a three-axis motion platform and a box body, the box body is internally provided with a detection cavity, a drop spraying test cavity and a plurality of immersion test cavities, the inner wall of the detection cavity is fixedly connected with a detection frame, and the outer surface of one side of the box body is fixedly connected with a detector connected with the detection frame; the inner wall of the dripping and spraying test cavity is connected with a plug-in jig, and the inner walls of the plurality of soaking test cavities are fixedly connected with a plurality of plug-in frames respectively; different chemical exposure conditions possibly encountered by the relay in practical application can be simulated, different exposure modes may cause different failure modes, weak links of the relay in various chemical environments can be more comprehensively revealed through the setting of the application, different types of tests can be performed on the same batch of samples, and the test efficiency is improved. And meanwhile, the equipment can realize automation of a test process, and manual intervention is reduced.

Systems and methods are provided for tracking all chemicals, including odors, a package is exposed to throughout the shipping process. A device is attached to the package or placed within the package to extract the chemicals that are in the surrounding environment to the device. The device can extract and concentrate volatile, semi-volatile and non-volatile chemicals that the device and the corresponding package are exposed to throughout the shipping process. The extracted chemicals may then be desorbed from the device and analyzed by an analytical instrumentation method.

Immediate (e.g., within 10 minutes) high volume (e.g., more than 10 mls, 100-1000 mls preferred) washing of the eye for 1-15 minutes or more with a low concentration (e.g., 5-17 mM) of a freshly made ascorbate solution with a pH between 6 and 6.99 after chemical exposure, for example after accidental or malicious splash or spray, results in significantly reduced eye damage. Products, devices and methods are provided.

Immediate (e.g., within 10 minutes) high volume (e.g., more than 10 mls, 100-1000 mls preferred) washing of the eye for 1-15 minutes or more with a low concentration (e.g., 5-17 mM) of a freshly made ascorbate solution with a pH between 6 and 6.99 after chemical exposure, for example after accidental or malicious splash or spray, results in significantly reduced eye damage. Products, devices and methods are provided.

The present invention discloses a highly sensitive and high-throughput chemical substance annotation method and system, which relates to the technical field of chemical substance identification, and includes collecting precursor ions and fragment ions of a sample to be detected by using the EISA technology; constructing a chemical exposome database, and sequentially extracting the precursor ion chromatogram of the sample to be detected as the target chemical substance; obtaining a target chromatogram after correction, screening all chromatographic peaks therein to obtain candidate chromatographic peaks and their peak types; traversing and matching each candidate chromatographic peak with the target chemical substance to obtain the relevant characteristic scores of each candidate chromatographic peak corresponding to the target chemical substance; sorting each candidate chromatographic peak corresponding to the target chemical substance based on the peak type and the relevant characteristic scores, and outputting the first several candidate chromatographic peaks in the sorting result as the final screening result of the chemical substances in the sample to be detected. The present invention can significantly increase the number of low-concentration chemical substances detected, and has the advantages of high sensitivity and high throughput.

The application discloses an indoor health risk comprehensive evaluation method fusing chemical exposure and microbial pathogenicity information, constructs a multi-dimensional risk factor integration framework, and for the first time systematically correlates, quantifies and fuses direct health risks of chemical pollutants, environmental behavior characteristics and potential pathogenicity risks induced by the chemical pollutants, so that more comprehensive and more accurate evaluation and priority ranking of the comprehensive health risks of indoor pollutants are realized. The method provided by the application can be widely applied to health risk identification and ranking of common and emerging chemical pollutants in indoor environmental media, including but not limited to pollutants in indoor dust, air and settled particulate matters. The evaluated pollutant types are wide, including high-concern pollutants of multiple types such as organophosphates, flame retardants, plasticizers, antibacterial agents, drug residues, polycyclic aromatic hydrocarbons and heavy metals, and have strong practical application value and wide applicability.

The invention provides an integrated device capable of automatically completing preparation of dangerous chemical reagents. Belongs to the field of laboratory automation equipment. According to the technical key points, the device comprises a shell, a transverse plate fixed in the shell and a reaction tank penetrating through and fixed to the transverse plate, an upper rotating disc rotationally connected with the shell is arranged above the transverse plate, a supporting cylinder is fixed to one side of the top of the upper rotating disc, first hydraulic rods are symmetrically arranged at the top of the supporting cylinder, and the first hydraulic rods are fixedly connected with the upper rotating disc; the output end of the first hydraulic rod is connected with a top cover matched with the reaction tank; a stirring unit for stirring a reagent in the reaction tank is arranged on the top cover; the invention aims to provide an integrated device capable of automatically completing the preparation of dangerous chemical reagents. The method is used for avoiding chemical exposure risks, does not need whole-course guarding of personnel, and improves the preparation efficiency of dangerous chemical reagents.

Immediate (e.g., within 10 minutes) high volume (e.g., more than 10 mls, 100-1000 mls preferred) washing of the eye for 1-15 minutes or more with a low concentration (e.g., 5-17 mM) of a freshly made ascorbate solution with a pH between 6 and 6.99 after chemical exposure, for example after accidental or malicious splash or spray, results in significantly reduced eye damage. Products, devices and methods are provided.

The invention discloses an indoor health risk comprehensive assessment method fusing chemical exposure and microbial pathogenicity information, and the method comprises the steps: constructing a multi-dimensional risk factor integration framework; according to the method, direct health risks of chemical pollutants, environmental behavior characteristics and potential pathogenicity risks of microorganisms induced by the chemical pollutants are systematically associated, quantified and fused for the first time, so that more comprehensive and more accurate evaluation and priority ranking of comprehensive health risks of indoor pollutants are realized. The method provided by the invention can be widely applied to health risk identification and sorting of common and emerging chemical pollutants in indoor environment media, including but not limited to pollutants in indoor dust, air and settled particles. The evaluated pollutants are wide in variety coverage and include various high-attention pollutants such as organophosphate, flame retardants, plasticizers, antibacterial agents, drug residues, polycyclic aromatic hydrocarbons and heavy metals, and the method has high practical application value and application range.

Immediate (e.g., within 10 minutes) high volume (e.g., more than 10 mls, 100-1000 mls preferred) washing of the eye for 1-15 minutes or more with a low concentration (e.g., 5-17 mM) of a freshly made ascorbate solution with a pH between 6 and 6.99 after chemical exposure, for example after accidental or malicious splash or spray, results in significantly reduced eye damage. Products, devices and methods are provided.

A plant-based tar compound is provided. The device is comprised of a plant-based tar compound designed as a sustainable alternative to petroleum-based tar for various industrial applications, including construction materials, roadwork, and shingles. The compound comprises a solvent recovery byproduct obtained from plant extraction processes, which contains residual plant lipids, waxes, and fats. Polymerization of the byproduct is achieved through the addition of a polymer resin, such as diglycidyl ether of bisphenol A, and a curing agent, including amines, acid anhydrides, or polyamides, each present at concentrations of 80% or higher. The weight-to-weight ratio of these components is adjustable, ranging from 10:1:1 to 10:9:9, to modify material properties such as viscosity, elasticity, and resistance to temperature fluctuations and chemical exposure. The curing process is controlled by temperature adjustments and ratio modifications, allowing customization of the final compound's characteristics.

The invention relates to the technical field of warehouse management, environment control and other related fields, in particular to a plywood warehouse environment-based classified storage system, which is used for guaranteeing the chemical quality of plywood during storage, and comprises a characteristic file acquisition module, a chemical characteristic file storage module, a characteristic file storage module and a characteristic file storage module, the chemical property file comprises the sensitivity of the sensitive plywood to specific pollutants and a pollution tolerance threshold value; the exposure dose calculation module is used for calculating the chemical exposure accumulated dose of the sensitive plywood based on the chemical characteristic file and the pollutant concentration information in the local chemical environment where the sensitive plywood is located; a regulation and control unit deployment module; an operation efficiency monitoring and adjusting module; by analyzing the chemical characteristics of the sensitive plywood and taking corresponding environmental regulation and control and filter element maintenance measures, the problem of chemical cross contamination in the prior art is effectively solved.

The present invention relates to adaptive object fabrication using enriched digital twins that incorporate voxel-based metadata tailored to environmental conditions and material performance. A machine-learned artificial intelligence (AI) engine selects substitute materials and predicts failure modes based on environmental context data, such as temperature, vibration, and chemical exposure. These insights are embedded into a voxel-based model as prescriptive metadata, generating an enriched digital twin configured for precise additive manufacturing. Secure transmission, cryptographic authorization, and compliance indexing ensure controlled and traceable fabrication. Unlike prior approaches, the system transforms digital twins into machine-executable fabrication directives that adapt dynamically to deployment-specific requirements. The invention enables context-aware object replication with improved survivability, regulatory compatibility, and manufacturing efficiency.

Immediate (e.g., within 10 minutes) high volume (e.g., more than 10 mls, 100-1000 mls preferred) washing of the eye for 1-15 minutes or more with a low concentration (e.g., 5-17 mM) of a freshly made ascorbate solution with a pH between 6 and 6.99 after chemical exposure, for example after accidental or malicious splash or spray, results in significantly reduced eye damage. Products, devices and methods are provided.

The present utility model relates to a topical skin-cleansing composition, specifically, a natural herbal bath soap, utilizing a synergistic botanical and emollient matrix, which comprises a soap base, oregano (Origanum vulgare) or an extract thereof, and oatmeal, thereby resolving the high skin-irritation rates, moisture depletion, and synthetic chemical exposure associated with conventional massmarket soaps by leveraging the native antimicrobial, antioxidant, and antiinflammatory properties of oregano combined with the soothing, barrier-protecting, and texturizing characteristics of oatmeal to enhance dermatological health and user tactile experience without the use of harsh sulfates, parabens, or artificial stabilizers.