153 results about "Contamination" patented technology

The present invention belongs to the technical field of groundwater sampling, and in particular to a groundwater sampling device. In view of the technical problem that, during existing manual groundwater sampling, groundwater is completely exposed to the air, and the water sample is easily polluted by the environment or wind, resulting in inaccurate water sample results, the following solution is proposed, which includes a sampling part, a sample storage part and a control part. The present invention directly samples the water sample in a tube body and directly stores the water sample to obtain a sample, which can avoid the accidental secondary contamination of the water sample during manual operation and ensure the accuracy of the sample detection parameters.

The invention discloses a bacterium capable of resisting serious combined pollution of arsenic and cadmium. The bacillus cereus strain is identified as bacillus cereus, is named as bacillus cereus L1. GLUT, and is preserved in the China General Microbiological Culture Collection Center on April 10, 2024, the address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC NO.30292. The bacillus cereus strain is named as bacillus cereus L1. GLUT. The bacillus cereus L1. GLUT can resist 200 mg / L of As and 100 mg / L of Cd at the same time, can be prepared into a microbial agent to be combined with a hyperaccumulator, and has considerable application value in the aspect of remediation of arsenic and cadmium combined contaminated soil.

The embodiments disclose a method for testing organic plant materials, including detecting and associating machine-readable QR code identifiers at multiple testing locations within a facility, preparing samples at the multiple testing locations with microorganism-specific growth stimulator solutions to facilitate detection of contaminants, automatically detecting and analyzing environmental conditions at the multiple testing locations with a plurality of sensors, automatically correlating the captured images and the environmental conditions to the associated machine-readable QR code identifiers, analyzing and comparing the captured images and the environmental data against known harmful microorganisms, automatically generating contamination reports including detected infestations and remediation recommendations with mitigation actions and displaying the contamination reports and the recommendations and automatically generating and displaying a facility map on the graphical user interface with hotspot locations of the detected infestations of the contamination reports associated with the machine-readable QR code identifiers.

The embodiments disclose a method for testing organic plant materials, including detecting and associating machine-readable QR code identifiers at multiple testing locations within a facility, preparing samples at the multiple testing locations with microorganism-specific growth stimulator solutions to facilitate detection of contaminants, automatically detecting and analyzing environmental conditions at the multiple testing locations with a plurality of sensors, automatically correlating the captured images and the environmental conditions to the associated machine-readable QR code identifiers, analyzing and comparing the captured images and the environmental data against known harmful microorganisms, automatically generating contamination reports including detected infestations and remediation recommendations with mitigation actions and displaying the contamination reports and the recommendations and automatically generating and displaying a facility map on the graphical user interface with hotspot locations of the detected infestations of the contamination reports associated with the machine-readable QR code identifiers.

The invention belongs to the technical field of engineering supervision, and particularly relates to a quality detection sampling device for engineering supervision, which comprises a sampling vehicle body, a sampling mechanism is arranged above the sampling vehicle body, the sampling mechanism is used for sampling soil at different depths and avoiding soil sample confusion, and the sampling device comprises a sampling drill bit for drilling into the soil for sampling, the device is provided with the sampling mechanism, multi-layer soil sampling from the surface layer to the deep layer can be completed at a time, multiple times of drilling and layered soil sampling are not needed, soil disturbance is reduced, the sampling efficiency is improved, and the sampling efficiency is improved. The original layering state of soil at each depth can be completely reserved, multiple groups of independent collecting cylinders are completely isolated, the problems that deep soil and surface soil are mixed and soil samples at different depths are mutually polluted are avoided, it is ensured that follow-up laboratory detection data can accurately reflect the real quality of the soil at each depth, and a reliable basis is provided for engineering quality evaluation.

The invention discloses an underground water sampling device capable of preventing cross contamination. The underground water sampling device comprises a cable type lifting machine; the wire wheel seat is driven by a cable type lifting machine to move up and down, and a carrying table is fixed at the bottom of the wire wheel seat; the motor is fixed on the top surface of the carrying table; and the stratified sampling mechanism is fixed on the bottom surface of the carrying table, is driven by a motor, and can perform synchronous sampling operation on a plurality of sections of underground water. According to the device, through layered synchronous sampling, dynamic sealing control and modular residue prevention design, the goals of high fidelity and low pollution of underground water sampling are achieved, and the device is particularly suitable for application scenes such as deeper underground water monitoring sites and the like which have strict requirements on data precision.

Compositions and process, along with systems using those compositions and processes are described herein for remediation of environmental contamination, including organic compound contamination of soil and ground water, including polyfluoroalkyl substances.

The invention relates to the technical field of wafer pollution analysis, and discloses a wafer surface pollution analysis method, device and equipment, and the method comprises the steps: carrying out the multi-source detection data collection of the surface of a wafer through an ultraviolet module, a terahertz module and a microwave module, carrying out the information mapping of the multi-source data, constructing a pollution feature space, applying environment disturbance, and collecting disturbance data; according to the method, wafer surface pollution is identified, pollution distribution is verified, cleaning adaptability is analyzed, multi-dimensional cleaning strategy analysis is carried out based on pollution characteristic distribution, an optimal cleaning scheme is generated, and the method is beneficial for achieving accurate identification and dynamic evaluation of wafer surface pollution, improving adaptability and scientificity of the pollution cleaning scheme, optimizing the cleaning effect and reducing cost. The manufacturing yield and stability are enhanced, and the problem that the pollution distribution condition of the wafer surface is difficult to detect in a single identification mode in the prior art is solved.

A method for preventing gas flow into and out of a first enclosure having a first volume by limiting changes of the pressure within the first enclosure which includes providing a second enclosure including a variable volume device having an interior second volume that varies responsive to the pressures inside and outside the second enclosure and providing fluid communication between the interior of the first enclosure and the interior of the second enclosure to maintain a substantially fixed collective volume of the combination of the first enclosure and the second enclosure despite ambient temperature.

The present application relates to geological survey technical field, specifically be a kind of geotechnical engineering geological survey with drilling rig, including base, the lifting assembly is on, the bracket is connected with driving assembly, the bracket is rotatably connected with sampling mechanism, when geological survey, driving assembly and sampling mechanism are moved up and down together by lifting assembly, simultaneously driving assembly works, drives drilling assembly to sample geology, drilling assembly enters different soil layer, and the resistance it receives is different, so in the case of entering different soil layer, the speed of centrifugal swing assembly rotation is different, when the speed of rotation changes, the distance of crosswise movement of top rod assembly also changes, so that drilling assembly samples two adjacent soil layers, for example, when drill bit drills into hard or soft soil layer, sampling tube is automatically switched collection point by conical block, ensure the representativeness and integrity of sample. In prior art, sampling interruption or interlayer contamination problem is effectively solved.

To provide a range hood which achieves neither excessive nor deficient detergency with respect to contamination such as oil accumulated on an impeller.SOLUTION: A range hood 1 includes: a blower 11 having a fan motor 14 and an impeller 16; a sensor 8 for detecting information regarding the degree of contamination of air 20 above a heating cooker 2; and a control part 9 for controlling an air volume notch of the fan motor 14. In a normal operation, the control part 9 estimates the degree of estimated contamination based on the information detected by the sensor 8, adds an estimated contamination accumulation amount fn per unit time calculated from the air volume notch and the degree of estimated contamination to a storage part 10, and in a washing mode, the control part 9 changes the operation of the washing mode based on an accumulated value Fn of the estimated contamination accumulation amount accumulated in the storage part 10.SELECTED DRAWING: Figure 2

The present application relates to a kind of groundwater organic pollution tracing analysis method and system based on isotope, the method comprises: collecting the pollutant parameter of monitoring point in multiple time intervals;Build target monitoring point set;Its coverage area is called target area;Based on typical time interval, the pollutant parameter of each monitoring point in analysis target monitoring point set is found to obtain the contour line corresponding to pollutant parameter type;The area in the contour line of each pollutant type high pollutant parameter is regarded as suspected area;Determine target pollution source in suspected area based on isotope parameter.The present application fully utilizes big data monitoring resources from space and time, combines pollutant parameter itself and optimally uses isotope analysis resources, and the tracking of pollution source is guided to provide efficient multi-source burst differentiating pollutant tracing.

A method for reducing contamination of a dehydrated material, comprising: receiving a contaminated partial or complete dehydrated material; analyzing the contaminated dehydrated material to determine the type and degree of contamination it has through conventional analytical techniques to detect the presence of contaminating agents; placing the contaminated dehydrated material in a container made of a material that can withstand high temperatures and pressures and configured to allow circulation of a gaseous fluid so that the gaseous fluid uniformly contacts the item to be decontaminated; subjecting the contaminated dehydrated material to at least one decontamination treatment according to the results of the contamination analysis; and packaging the decontaminated dehydrated material.

The invention belongs to the technical field of coal rock mechanical property testing, particularly relates to a mechanical testing device and method for coal rock loading, and solves the problems that an existing device is single in function, fragments splash, cleaning is inconvenient, and protection and cleaning are not linked. The device comprises a supporting mechanism, and a modular loading mechanism is detachably mounted on the supporting mechanism and comprises a static extrusion loading module and a dynamic impact loading module; the linkage type protection mechanism is provided with two protection half barrels, and fragments can be prevented from splashing when the two protection half barrels are closed; the sweeping mechanism is started when the protective half barrels are unfolded, a rotating ring drives a Z-shaped plate to rotate, an annular inclined panel is driven to vibrate, and fragments are swept; the device integrates a static extrusion function and a dynamic impact function, so that the equipment utilization rate and the application range are improved; protection and cleaning are linked, safety is guaranteed, cross contamination is avoided, and the experiment accuracy and efficiency are improved.

Provided is an automated analyzing device capable of preventing erroneous detection by a detecting portion for monitoring an amount of waste liquid, by detecting contamination within a measuring portion and executing a cleaning operation. An automated analyzing device 100 comprises: a pre-processing portion 101 that pre-processes a specimen; an analyzing portion 102 that analyzes the specimen; a measuring portion 103 that measures the amount of waste liquid generated by the pre-processing portion 101 and the analyzing portion 102; and a control portion 110 that controls the operation of the measuring portion 103. The measuring portion 103 includes a storage tank 201 for temporarily storing the waste liquid, and a waste liquid amount determining portion 203a, 203b for measuring the waste liquid stored in the storage tank 201. The control portion 110 determines contamination of at least the storage tank 201 of the measuring portion 103 on the basis of determination information from the waste liquid amount determining portion 203a, 203b.

The utility model discloses a movable nursing frame, which relates to the technical field of nursing frames and comprises a bottom plate, universal wheels are mounted at four corners of the lower end of the bottom plate, two U-shaped rods which are symmetrically distributed left and right are mounted at the upper end of the bottom plate, and a plurality of placing trays which are distributed in a linear array are jointly arranged between the two U-shaped rods. Placing grooves are formed in the upper ends of the multiple placing discs, movable cover plates are arranged at the upper ends of the multiple placing discs, and a moving part is jointly installed at the rear ends of the two U-shaped rods. By arranging the cover plate, the upper portion of the containing disc can be protected, dust, bacteria and other pollutants can be effectively prevented from entering the tray, medical instruments, medicine or other objects in the tray are protected against pollution of the external environment, meanwhile, additional protection is provided, and the tray is convenient to use. And articles in the tray are prevented from being damaged by external force impact in the carrying or operating process, so that the completeness of the articles is kept.

A system and method for determining reservoir fluid contamination of a reservoir is disclosed. The system includes one or more sensors to detect field measures from reservoir fluid of the reservoir an

To provide a partition wall device for storing a carry-in object which enables reduction of contamination risks when a carry-in object is carried into a work space of a safety cabinet and enables improvement of workability of a worker.SOLUTION: The disclosure relates to a partition wall device for storing a carry-in object which is disposed in front of a safety cabinet installed in a clean room, facing the safety cabinet. The partition wall device for storing the carry-in object has: a frame having a width which is equivalent to or larger than the width of the safety cabinet and having a height which is equivalent to or larger than the height of the upper end of the front surface opening of the safety cabinet; a partition wall provided at the frame; a fan filter unit which is fixed to the frame and supplies clean air to a clean area, which is a space defined by the partition wall and the safety cabinet, at a predetermined flow rate; and one or two or more storages each of which is held by the frame, has an opening / closing door facing the clean area, and stores the carry-in object.SELECTED DRAWING: Figure 1

Disclosed herein are assemblies, systems, and methods for preventing contamination and alteration of biological materials during and after lyophilization. A tray assembly configured to retain a biological material in a container during a freeze-drying process, the tray assembly including a tray and a complementary lid. The lid may include a compressible leg member configured to transition from an extended configuration to a compressed configuration in response to a downward force applied on the lid when the lid is positioned over the tray. When the supporting leg components extend, a gap exists between the upper edge of the tray and the bottom face of the cover body. And under the condition that the supporting legs extend and the tray assembly is opened, the tray assembly is freeze-dried. After lyophilization is completed, the legs may be compressed and the lid may be sealed over the tray, thereby enclosing the biological material within the assembly and protecting it from contamination inside and outside the chamber and exposure to ambient air.

The application discloses a composite insulator deterioration type discrimination method and device, a storage medium, equipment and a program product. The method comprises the following steps: acquiring the surface temperature data of the axis of the composite insulator; calculating the maximum temperature rise; in response to the maximum temperature rise being greater than a preset first temperature threshold, calculating a characteristic parameter and acquiring the environmental humidity; when the environmental humidity is less than a preset humidity threshold, performing the deterioration type discrimination under low humidity based on the characteristic parameter to obtain the proportion of the surface contamination and the interface defect; and when the environmental humidity is greater than or equal to the preset humidity threshold, performing the deterioration type discrimination under high humidity based on the characteristic parameter to obtain the proportion of the surface contamination, the interface defect and the sheath aging and dampness. The application can meet the requirements of simple, fast and effective on-site insulator detection.

Device (1) for contamination analysis of a component (2), comprising - a suction device (4) for generating a suction flow (S), - a receiving device (5) fluidically coupled to a suction side (4.1) of the suction device (4) with a suction opening (5.1) for drawing particles (P1 to Pn) from the component (2), - a filter device (3) arranged between the suction side (4.1) and the receiving device (5), comprising a filter housing (3.1) with - a first housing section (3.1.1) fluidically coupled to the suction side (4.1), - a second housing section (3.1.2) fluidically coupled to the receiving device (5), the inner contour of which is designed as a hollow cylinder with a constant inner diameter (d), wherein the inner diameter (d) is smaller than a length (l) of the hollow cylinder, and - a filter section (3.1.4) arranged between the housing sections (3.1.1, 3.1.2), in which a disc-shaped filter (3.2) is arranged and / or can be arranged immediately adjacent to the hollow cylinder, the surface normal vector of which runs in the direction of the suction flow (S), and - an evaluation unit (6) which is configured to automatically perform a photo-optical analysis of the filter (3.2) with regard to the quantity and / or type and / or size and / or shape of particles (P1 to Pn) drawn in via the intake opening (5.1) and deposited on a surface of the filter (3.2), characterized in that the first housing section (3.1.1) has a funnel-shaped inner contour which, starting from a coupling point with the second housing section (3.1.2) in the direction of the suction device (4), tapers from an inner diameter corresponding to the inner diameter (d) of the hollow cylinder to a smaller inner diameter.

The invention discloses an evidence pollution detection system and method based on reverse mapping positioning, and relates to the technical field of medical evidence-based, and the method comprises the steps: calling an operation record in an operation log of an evidence storage system, combing a source path of a target evidence, and generating an evidence circulation time axis; by calculating a pollution risk value, an upstream evidence source of a target pollution point is traced, and a pollution propagation path tree is constructed; and finally, positioning the pollution source according to the pollution source scoring function. The evidence pollution problem can be accurately identified, the pollution source and the pollution propagation path can be traced, guarantee is provided for reliability of evidence-based medicine, and the problem that pollution evidence cannot be accurately identified and traced in a traditional evidence detection mode is solved.

The invention discloses a sampling device for coal mine fault geological survey, and relates to the technical field of geological survey sampling. The antifouling assembly comprises an inner pipe arranged on the inner side of the tank body in a penetrating mode, an antifouling part, an anti-falling part and a mounting part, the antifouling part is used for preventing cross contamination between materials of different geological stratums during sampling, the anti-falling part is used for limiting movement of the antifouling part, and the inner pipe and the mounting base are rapidly disassembled and assembled through the mounting part. By arranging the antifouling assembly, the gravity sheet is pushed to move upwards during sampling, and the isolation sleeve layer is synchronously pulled up through the traction rope, so that the situation that a sample entering the inner pipe in advance leaves a part of substances to pollute a sample entering the inner pipe subsequently is avoided, and direct contact pollution of residues on the upper layer to a new sample on the lower layer can be effectively prevented; the self thrust of the sample is used as a power source, passive automatic triggering is achieved, the purity of the samples at different stratum interfaces can be particularly protected, and help is provided for investigation and judgment results.

The present application belongs to the technical field of geological exploration, and particularly relates to a geological exploration sampling and drilling device and a method thereof. The method comprises single-time drilling to a target depth, layer-by-layer sampling according to layer position time sequence; collecting sample physical property parameters and generating a cleaning strategy; performing channel cleaning time sequence operation; detecting residual concentration value and component feature vector, comparing with the component feature vector of the sample of the previous depth layer position, calculating cross-contamination probability; if the cross-contamination probability is lower than a preset threshold, the cleaning is up to standard, otherwise, an upgraded cleaning strategy is executed; and a digital traceability archive is established. The device comprises a sampling and drilling mechanism, a depth positioning module, a sampling channel control valve group, a sensor group, a cleaning unit, a time sequence control module and a traceability coding module. The present application overcomes the defects of fixed and unchanged cleaning strategy, incomplete cleaning or over-cleaning in the prior art through adaptive adjustment of the cleaning strategy.

A method for evaluating the degree of contamination in which an evaluation device (100) evaluates the degree of contamination of a water-repellent coating film (P), the method comprising acquiring first measurement data obtained by measuring the unevenness of the surface of the coating film, acquiring second measurement data obtained by measuring the unevenness of the surface of the coating film after the water-repellent coating film (P) is exposed to a dust environment, calculating the difference between the first measurement data and the second measurement data, and evaluating the degree of contamination of the water-repellent coating film (P) on the basis of the difference.

The present disclosure provides an exemplary process for a system that may remove particulate from industrial fluids using a Particulate Removal System (“PRS”). In some aspects, this system may treat water pulled from different Industrial Fluid Systems (“IFS”) while doing continuous monitoring and quality tests of the water. In some embodiments, the system may use sensors and other technology to allow for the system to periodically self-clean itself allowing for maximum efficiency and accuracy while also cleaning the water from the IFS. In some implementations, the water from the IFS may be separated through a Particulate Trap Mechanism (“PTM”) to ensure that particulate including dissolved material has been removed from the water and separated from possible contamination throughout the system. In some aspects the system may be used for continuous and direct measurement of water quality and automatic chemical level adjustment by systems to maintain a desired range or setpoints.

The present invention discloses a pH acidity monitoring system for identifying the risk of microbial contamination, which relates to the field of food filling detection. The system includes: the discharge port of the storage tank and the filling system are connected by a pipeline, and a first diaphragm valve, a pH meter, and a second diaphragm valve are sequentially arranged on the pipeline; the output end of the pH meter is electrically connected to a control cabinet, and the control end of the second diaphragm valve is electrically connected to the control cabinet. The control cabinet is used to calculate the difference between the real-time pH value detected by the pH meter and the standard pH value, and compare the difference with a set threshold value. When the difference is less than the set threshold value, the second diaphragm valve is controlled to open, and when the difference is greater than the set threshold value, the second diaphragm valve is controlled to close. The present invention can detect the real-time pH value by aseptic sampling by arranging the pH meter and the diaphragm valve on the pipeline and electrically connecting them to the control cabinet. When the pH value exceeds the standard, the diaphragm valve can be automatically closed to prevent contamination by unqualified materials.

A contamination prevention system for a fully mechanized mining face hydraulic system includes multiple contamination prevention devices mounted on hydraulic cylinders. Each device includes a contact ring fitted onto a plunger of the hydraulic cylinder. An annular flow channel is formed on each of the two end faces of the contact ring, and these channels are connected to multiple flow grooves penetrating the inner wall of the contact ring. One flow channel facing the cylinder body is also connected to at least one suction pipe, and the other flow channel facing away from the cylinder body is also connected to at least one injection pipe. This invention provides a contamination prevention system and method for a fully mechanized mining face hydraulic system, which can prevent the emulsion from the hydraulic cylinder system from flowing into the environment and causing contamination, and also prevent dust and other impurities on the fully mechanized mining face from contaminating the emulsion with the plunger, ensuring the stable operation of the hydraulic system.

This invention relates to the field of nuclear, biological, and chemical (NBC) contamination decontamination, specifically to a NBC decontamination site and method. This invention cleverly integrates public sports venues with emergency decontamination functions through a site-adaptive module. Equipped with standardized transport interfaces, it facilitates rapid deployment using conventional transportation tools, enabling the construction of sufficient decontamination areas in a short time. When folded, its compact form supports multi-layer stable stacking, significantly saving storage space. The modular water system, combined with gradient drainage and waterproof construction, utilizes the natural elevation differences of the site to form a closed-loop water system, ensuring efficient decontamination and preventing wastewater overflow. A built-in residual water treatment device facilitates rapid cleanup after operations, allowing the site to quickly return to its sports uses. This effectively overcomes the shortcomings of fixed decontamination facilities being idle during normal times and the limited capacity of mobile equipment.