93 results about "Contamination" patented technology

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 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.

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.

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.

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.

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 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.

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.

The utility model relates to the technical field of water conservancy projects, in particular to a multi-point sampling device which comprises a floating frame, a fixing plate is fixedly mounted on one side of the floating frame, sliding grooves are formed in the four sides of the fixing plate, sliding blocks are slidably mounted in the multiple sliding grooves, a water storage tank is fixedly mounted on the side, away from the fixing plate, of the floating frame, and the water storage tank is fixedly mounted on the other side of the floating frame. A plurality of water suction pumps are fixedly mounted on one side of the water storage tank; according to the scheme, a plurality of sampling pipes are arranged, so that an upper-layer water sample can be prevented from influencing a lower-layer water sample, and different sampling pipes are used for sampling at each depth, so that the risk of cross contamination is reduced, the situation that re-sampling is needed due to cross contamination is avoided, time and resources are saved, and the sampling efficiency is improved. Meanwhile, the accurate depth sampling data is beneficial to subsequent water quality analysis, the reliability of the result is ensured, the electromagnetic valve is arranged, so that when the electromagnetic valve is not opened, the sample does not make contact with the external environment, and the cross contamination risk of the sample in the collection process is reduced.

A method for cleaning containers (10), wherein containers (10) are transported by means of a transport device (2) and fed to a cleaning device (4) for cleaning the containers, and this cleaning device (6) cleans the containers (10), in particular by applying a free-flowing cleaning agent to the containers, characterized in that the containers (10) to be cleaned are inspected, and at least one first value (V1, V2, V3) is determined which is characteristic of a degree of soiling of an inspected container (10) or a degree of soiling of a group of inspected containers, and the cleaning device (6) cleans the containers (10) to be cleaned or the groups of containers to be cleaned taking into account the first value (V1, V2, V3), wherein differently soiled containers (10) are cleaned differently.

The present invention relates to a cleaner having a turbidity correction function and an operation method therefor. The cleaner having a turbidity correction function, according to one aspect of the present invention, comprises: a turbidity sensor unit for measuring a contamination level of washing water sucked in through a suction pipe; and a processor unit that calculates the contamination level of the washing water by correcting the measured contamination level of the washing water with reference to a preset reference contamination level.

The invention is directed towards methods, compositions, and apparatus for accurately detecting the presence and amounts of contaminants in wastewater. The method comprises the steps of adding to a volume of wastewater at least one tracer molecule, observing the tracer for indications of particular contaminants, conducting at least one second form of contamination detection, and interrelating the two measured properties to identify the specific composition of the contamination. Using a tracer molecule allows for the detection of otherwise hard to detect oils and grease. Use of the second method however compensates for tracer interfering contaminants and allows for more accurate readings. The invention includes feeding of functional chemicals in response to the detections and conducting the detections online and continuously.

The invention belongs to the technical field of pipeline maintenance, and particularly relates to a heating pipeline maintaining and cleaning device which comprises a shell and a plurality of sets of electric rollers arranged on the outer wall of the shell, and further comprises a fixing plate fixedly arranged in the shell, and a cleaning mechanism is arranged on the surface of the fixing plate and the end of the shell; the scraping mechanism is arranged on one side of the sweeping mechanism, and the scraping mechanism and the sweeping mechanism are connected into a whole; and the gap cleaning mechanism is arranged on one side of the scraping mechanism. Pipeline connection gaps can be accurately recognized, internal stubborn impurities can be deeply cleaned, cleaning blind areas and pipeline damage are avoided, and the leakage risk is reduced; meanwhile, hard impurities on the inner wall of the pipeline and around gaps can be removed in a targeted mode, the cleanliness of the inner wall is improved, and the influence on the heating efficiency is reduced; and residual fine impurities can be comprehensively cleaned and collected in real time, secondary accumulation and environmental contamination are prevented, and the cleaning effect, the cleaning efficiency and pipeline protection are considered.

In one embodiment, contamination detection includes attaching a front-facing side of a detector enclosure to a ripper of a ripper machine. The detector enclosure includes a rear-facing side having a rear-facing window, two lateral-facing sides, and a bottom-facing side. A detector is disposed inside the detector enclosure. The ripper is inserted into a soil to position the rear-facing window, the two lateral-facing sides, and the bottom-facing side of the detector enclosure below a soil surface of the soil. The ripper is moved horizontally through the soil leading with the front-facing side of the detector enclosure to detect subsurface contamination via the rear-facing window using the detector.

The invention relates to a device (100) for determining a state of a system component (102) of a conveying system (104) for conveying bulk material, comprising: at least one measuring device (108) for measuring, in particular automatically, at least one contamination parameter that describes at least one cause of contamination present in the conveying system (102); and an evaluation device (110) which is configured to determine, in particular automatically, the state of the system component (102) on the basis of the at least one contamination parameter determined by the at least one measuring device (108). The invention also relates to a conveying system having such a device (100) and to a corresponding method for determining a state of a system component (102) of a conveying system (104) for conveying bulk material.

The invention relates to a door device (1) for a first closed space, which enables a sealed connection between the first closed space and a second closed space, comprising a flange (2) defining an opening to the first closed space, a door (4) mounted on the flange (2) by means of a hinge, a member for fixing the flange of the second space pressed against the flange of the first space, comprising a lock catch (8) which is movable between an unlocked position in which it is embedded inside the flange (2) and a locked position in which it protrudes radially from the flange (2) to the opening, whereby the flange of the second space is locked by engaging each lock catch in a notch provided on the peripheral edge of the flange of the second space without rotating the flange (2).

The present invention relates to an article having a contamination-preventing surface and a method for forming a contamination-preventing surface on the surface of an article.

This invention belongs to the field of mechanical automation engineering, specifically a multifunctional integrated detection and decontamination device. A lifting assembly is mounted on the guide column, and a rotary table assembly has a power unit and a rotating unit. The power unit is connected to the output end of the lifting assembly, and the rotating unit is driven to rotate by the power unit. The entire rotary table assembly is lifted and lowered along the length of the guide column by the lifting assembly. A partial decontamination module and a comprehensive decontamination module are respectively connected to the rotating unit of the rotary table assembly. One end of the partial decontamination module is connected to the rotating unit of the rotary table assembly, and the other end is the execution unit that enables integrated detection and decontamination. The comprehensive decontamination module is a deformable spray pipe arm that sprays washing liquid onto contaminated personnel. This invention can detect and decontaminate radioactive material contamination on the body surface of personnel working in nuclear environments, effectively reducing the radiation dose to contaminated personnel and minimizing the spread of contamination. It features multiple functions, high efficiency, and wide applicability.

This application relates to a method and apparatus for labeling the degree of contamination of power transmission components. The method includes: acquiring inspection images of power transmission lines; sequentially performing noise suppression, illumination equalization correction, and standardization processing on the inspection images to obtain a standardized sample set to be labeled; inputting the sample set to be labeled into a trained hybrid detection model to output a preliminary detection result containing a first score of cognitive uncertainty; filtering and correcting the preliminary detection result based on the first score to obtain a contamination labeling result for the power transmission components; classifying the degree of contamination in the inspection images within the contamination labeling result to obtain a refined labeling result containing a second score of cognitive uncertainty; and filtering and correcting the refined labeling result based on the second score to obtain the final contamination labeling result for the power transmission components. This method can improve the accuracy of contamination labeling of power transmission components.

Methods and systems for performing iterative contamination detection and segmentation of sequence read data are described. The methods are based on comparing a distribution of minor allele frequencies (MAPs) for a plurality of single nucleotide polymorphisms (SNPs) detected in the sample to an expected distribution of minor allele frequencies for a plurality of selected SNP loci, and adjusting a MAP threshold used to discriminate between aberrant SNPs (SNPs exhibiting a different distribution of MAP values than that expected for the plurality of selected SNPs) and those conforming to the expected distribution of minor allele frequencies for the plurality of selected SNP loci. The methods may be used to estimate the degree of contamination in a sample and to provide segmentation of sequence read data for the sample, and may further comprise building a copy number model that predicts a copy number for one or more gene loci.

Device (100) for determining the state of a system component (102) of a conveying system (104) for conveying bulk material, comprising: at least one detection device (108) designed to determine, in particular automatically, at least one contamination parameter that describes at least one cause of contamination present on the system component (102); and an evaluation device (110) designed to determine, in particular automatically, the state of the system component (102) based on the at least one contamination parameter determined by the at least one detection device (108), as well as a conveying system with such a device (100) and a corresponding method for determining the state of a system component (102) of a conveying system (104) for conveying bulk material.