1345results about "Sampling" patented technology

An energy-saving and environment-friendly park air monitoring device, comprising a stand (1), a detection apparatus body (2) being mounted on the stand (1) by means of a first mounting bracket, and a solar panel (3) being further mounted on the stand (1) by means of a second mounting bracket. A filter cylinder (21) is mounted on the detection apparatus body (2), a plurality of openings (4) being formed in the filter cylinder (21), a filter plate (5) being fixedly mounted in the openings (4). A dual-shaft motor (6) is fixedly mounted at the bottom of the filter cylinder (21). When dust and impurities adsorbed and accumulated on the filter plate (5) need to be removed, the dual-shaft motor (6) is started, the two output ends of the dual-shaft motor (6) rotate to drive a L-shaped rod (7) and a driving gear (8) to rotate synchronously, and the rotation of the L-shaped rod (7) can drive a cleaning brush (9) to clean the filter plate (5). In addition, by means of a transmission mechanism, the kinetic energy from the driving gear (8) can be transmitted to a blocking mechanism, so as to drive the blocking mechanism to rotate for blocking the openings (4), such that the dust raised during cleaning of the filter plate (5) is prevented from passing through the filter holes in the filter plate (5) and entering the filter cylinder (21), thereby avoiding contamination of a detection probe by the dust during the cleaning of the filter plate (5), and achieving a protective effect on the detection probe.

A system and method for simultaneously running a plurality of air quality sensor units using a centralized station and software to test for field performance upon factory return from field installations, automatically identify preventative maintenance requirements, and automatically calibrate the sensor units and generate quality metric reporting. The centralized station and software include a computer, a manifold, tubes, and cables. A test gas is supplied, wherein the manifold distributes the test gas. Once powered and supplied with test gas, the sensor units are tested simultaneously. The computer runs software that compares the test data collected from the sensor units to determine if any of the sensor units fail standards or produce data that deviates from a mean average range. Sensor units that do not require maintenance are calibrated using test gasses to generate calibration coefficients which are stored within the sensors' firmware.

A fluid transfer system component for internally measuring fluid density in real- time. The component may be a flange comprising a base having a first face and a second face, a primary fluid passageway extending through the base from the first face to the second face, a secondary fluid passageway extending through the base from the first face to the second face, and an outside wall, a portion of which is configured to operably engage with a measuring device and comprises a third opening. The primary fluid passageway may have a non-circular cross-section allowing the secondary fluid passageway to be parallel to the primary fluid passageway. The third opening may be in fluid communication with the secondary fluid passageway allowing the measurement device to measure fluid data such as fluid density via the secondary fluid passageway.

A cartridge for dissociating tissue, comprising: a processing chamber comprising a stator, a side wall, a top orifice, and a first processing chamber port positioned in the side wall; and a grinder assembly comprising a plunger comprising a rotor, a grinder assembly slidably positioned in the processing chamber through the top orifice; wherein: the stator comprises a plurality of teeth arranged in a spaced-apart array of rings; and the rotor comprises one or more central teeth and a plurality of teeth arranged in a spaced-apart array of rings, wherein one ring of teeth is positioned at or substantially at a circumference of the rotor; wherein the rings in the stator and the rings in the rotor are positioned such that when the rotor contacts the stator, rings of teeth in the stator mesh with the one or more central teeth and rings of teeth in the rotor

A system and method for automated slide retrieval and scanning is disclosed. The system comprises at least a processor configured to receive, from a user, a set of scan requirements, identify a current slide configuration, generate an operational scan sequence based on the received scan requirements and the current slide configuration, and execute the generated operational scan sequence.

The invention provides an automatic pulverized coal bunker gas analysis method and system based on multi-path inspection, and relates to the technical field of pulverized coal bunker safety monitoring, the system comprises a gas collection module and a temperature monitoring module, the temperature monitoring module uploads collected temperature data to a control center, and the control center is connected with the gas collection module. The gas analysis module uploads a gas component analysis result to the control center, and the control center fuses data of the temperature monitoring module and data of the gas collection module, processes and analyzes the data and sends an early warning instruction to the early warning output module. By fusing a three-dimensional gas concentration distribution model and a three-dimensional temperature field model, voxel-level overlay analysis is carried out in a unified space grid, a space coupling area of high-temperature and high-concentration carbon monoxide is accurately identified, and the effect of early and quantitative diagnosis of spontaneous combustion risks is achieved by calculating risk characteristic values.

The present invention relates to a system and method for analyzing foreign substances in a positive electrode material, the system includes a pretreatment part configured to prepare a monolayer sample of a positive electrode material powder, a measurement part configured to obtain an optical image of the monolayer sample using an optical microscope, and an analysis part configured to analyze the optical image of the monolayer sample, thereby obtaining information on foreign substances in the positive electrode material.

The invention discloses a sniffing detection error compensation method, which relates to the technical field of environment detection, and comprises the following steps: S1, data acquisition: collecting detection data and environment parameters of sniffing distinguishers in multiple dimensions, S2, establishment of a sniffing analysis model: extracting features from three aspects of individuals, working states and environments, the method comprises the following steps of: selecting a basic algorithm to construct a model according to personal information, historical detection performance, physiological index statistical values, workload and various environmental parameters, and counting the number of sniffing and distinguishing aiming at a smell adaptation problem, S3, error prediction and coefficient compensation, S4, result correction and S5, data transmission. According to the invention, through data acquisition and establishment of the olfactory analysis model, the physical signs of the olfactory discriminator and the fine parameters of the environment are matched with long-term data accumulation to provide massive and high-quality data for the data-driven olfactory detection error prediction model, and through error prediction, coefficient compensation and result correction, the accuracy of the olfactory detection error prediction model is improved. Therefore, accurate prediction and compensation of the sniff detection error are realized, and the accuracy of sniff detection is improved.

The invention relates to a gas leakage detection method and system, and an acquisition and processing device applied to the gas leakage detection system, the system comprises an unmanned aerial vehicle, a sampling device, a rotating wheel device and an acquisition and processing device, and the sampling device, the rotating wheel device and the acquisition and processing device are fixed on the unmanned aerial vehicle; the method comprises the steps that collected to-be-detected gas is detected, and the to-be-detected gas is obtained by collecting gas in the environment where detected equipment is located through a sampling device under the condition that the extension length of a sampling pipe of the sampling device is adjusted to the reference extension length; the extension length of the sampling pipe is adjusted based on the reference extension length through a rotating wheel device in the detection system. According to the invention, the accuracy of gas leakage detection can be improved.

The invention discloses a milk sampling system (100). The milk sampling system comprises a milk sampling device (120) with a lower / upper connecting part (121, 124). The upper connecting part (124) comprises a movable cover (122) which can be detachably attached to the lower connecting part (121) so as to form a closed space in a closed position; and is separated from the lower connecting part in the separated position. A milk conduit tip (117) is arranged to provide milk via a first air gap (127) into the lower connection part (121) in the separated position. The system (100) further comprises a milk pump (119), an actuator (190) arranged to push / pull the cover (122), and a controller (199). The controller (199) is configured to confirm that the cover (122) is in the disengaged position; the milk pump (119) is commanded to deliver milk to the milk conduit tip (117).

A method for identifying transformation products of antibiotics from known and potential unknown transformation pathways includes: step 1: collecting samples, extracting antibiotics and transformation products thereof, and obtaining non-target data by ultra-high performance liquid chromatography-high resolution mass spectrometry; step 2: identifying transformation products of antibiotics from known and unknown transformation pathways; step 3: generating a list of candidate transformation products and annotating their structures; step 4: extracting feature fragments based on structure annotations of the transformation products obtained in step 3, and searching for spectra with the feature fragment, and supplementing the transformation products from unknown transformation pathway; and step 5: obtaining a final list of identified products based on annotated structures.

The utility model relates to the field of prediction platforms, in particular to a dynamic optimization traffic transportation energy consumption prediction platform which comprises a stand column and an adjusting assembly. The outer end of the stand column is provided with an adjusting assembly used for adjusting the height of equipment for adaptive detection, the adjusting assembly comprises a sleeve rod, an air cylinder, a telescopic rod, a connecting rod, a tail gas detection head, a monitoring plate, a transmission rod, a positioning block, a connecting plate, a detection piece and a butt joint, the sleeve rod is located above the stand column, and the air cylinder is arranged between the sleeve rod and the stand column; a hydraulic rod is arranged at one end, located in the sleeve rod, of the air cylinder, a telescopic rod is arranged in the sleeve rod, and the telescopic rod is slidably arranged in the sleeve rod through the hydraulic rod; according to the utility model, the cylinder is combined with the hydraulic rod to drive the telescopic rod to stretch out and draw back to adjust the height of the tail gas detection head, so as to ensure that the equipment reaches the required height, so that the equipment can obtain accurate detection data under different vehicle types and working conditions to adapt to different monitoring requirements and environmental conditions, and the accuracy of data acquisition is improved.

Devices are provided for remote environmental and atmospheric testing that can be deployed without personnel entering a potentially dangerous area. The device can detect and automatically analyze biological and chemical agents and then automatically report if any of these agents are present without the intervention of public safety or military personnel. During sample collection and analysis, the device deploys a sample-collecting pad, tape, or filter which is then retracted with captured samples (liquid or solid) obtained from either surfaces or as aerosols from the air. The captured samples may be retracted into an enclosed vessel which will then extract the sample off of the pad, tape, or filter into a liquid carrier, and this liquid carrier is delivered to a downstream process for further analysis. The steps between sample collection and analysis are completely automated and include solvent washes, extractions, centrifugations, or other steps that are not normally readily amenable to totally-hands-off automation.

Fluid analyzation devices, methods, and systems are disclosed including an analyzation device comprising a sample vessel having an outer surface, a microchannel within the confines of the outer surface, a first port extending through the outer surface to the microchannel, and a second port extending through the outer surface to the microchannel; and an piezo transducer bonded to the outer surface of the sample vessel to form a monolithic structure, the piezo transducer configured to emit ultrasonic acoustic waves having a first frequency, a second frequency, and a third frequency into and / or to a blood sample within the microchannel, the first frequency configured to begin separation of red blood cells and plasma in the blood sample, the second frequency configured to complete separation of the red blood cells and plasma, and the third frequency configured to rupture cell walls of the blood cells producing a lysed blood sample.

A method and apparatus for a fluid sensing system is disclosed. The method can include providing a first portion of a sample fluid in a sensing channel, retaining the first portion of the sample fluid in the sensing channel for a first diffusion period, providing a second portion of the sample fluid in the sensing channel after the first diffusion period, retaining the second portion of the sample fluid in the sensing channel for a second diffusion period, and sensing the second portion of the sample fluid in the sensing channel by a sensing element after the second diffusion period. Providing a pulse of sample with an intervening diffusion period can produce a more uniform analyte concentration across the sensor with a smaller overall volume of sample fluid.

The present invention concerns a method of performing one or more reactions on a biological entity, the method comprising: (i) isolating the biological entity in a microcapsule comprising a core and a semi-permeable shell; and (ii) performing the one or more reactions on the biological entity in the microcapsule.

The utility model relates to the technical field of air samplers, and discloses an air sampler for indoor environment detection, which comprises a fixed table, a hydraulic rod is fixedly connected to the side wall of the fixed table, a first sliding table is fixedly connected to the output end of the hydraulic rod, a sliding rail is fixedly connected to the side wall of the fixed table, the first sliding table is slidably connected to the side wall of the sliding rail, and a second sliding table is fixedly connected to the side wall of the sliding rail. An inclined plate is fixedly connected to the side wall of the fixed table, a supporting table is fixedly connected to one side wall of the sliding table, a connecting column is rotatably connected to the interior of the supporting table, a connecting plate is fixedly connected to the bottom of the connecting column, a pulley is rotatably connected to the interior of the connecting plate, and a sampling head is fixedly connected to the top of the connecting column. According to the utility model, through the cooperation of the sliding rail, the supporting table, the inclined plate and other structures, the movement and rotation of the sampling head are realized, so that the sampling range of the sampling head is expanded, the sampling structure is diversified, and the indoor air quality detection and evaluation are more accurate.

A resealable fluidic device for conducting assays of a biological sample comprises a frame having a sample opening; and a cover slide configured to be received in the frame; wherein the frame is configured to receive a base slide on which a biological sample is configured to be disposed; wherein the cover slide and the base slide are configured to form a flow cell chamber housing the biological sample, and the flow cell chamber is configured to be aligned with the sample opening when the frame, the cover slide, and the based slide are assembled.

The present invention provides a pretreatment method for determining the stable isotope ratio of non-exchangeable hydrogen in acetic acid, belonging to the field of stable isotope analysis of foods. The pretreatment method comprises the following steps: adding a reaction reagent to a vinegar sample extract to replace the carboxyl hydrogen in the acetic acid with the exchangeable hydrogen to achieve isotope exchange equilibrium. The present invention can be used to simply and rapidly determine the isotope ratio of non-exchangeable hydrogen in acetic acid in vinegar products and can be used in research and applications for detecting the authenticity or adulteration of vinegar products.

We describe apparatuses, systems, method, reagents, and kits for conducting assays as well as process for their preparation. They are particularly well suited for conducting automated sampling, sample preparation, and analysis in a multi-well plate assay format. For example, they may be used for automated analysis of particulates in air and / or liquid samples derived therefrom in environmental monitoring.

A scraping device for a pole piece (70) coating and a layered scraping method for the pole piece (70) coating, the scraping device comprises a roller (80), a scraper (20) located on one side of the surface of the roller (80), a tensioning structure located on the other side of the surface of the roller (80), a force value sensor, a feed driving structure, a distance measurement sensing structure and a scraping driving structure, after the pole piece (70) bypasses the surface of the roller (80), the tensioning structure fixes the end portion of the pole piece (70) and applies a pulling force to the pole piece (70), and the scraping driving structure is driven by the scraper (20) to scrape the pole piece (70). The force value sensor is used for monitoring and feeding back tension applied by the tensioning structure; the cutter feeding driving structure drives the blade point of the scraper (20) to go deep into the coating of the pole piece (70), the distance measurement sensing structure is used for detecting the distance between the scraper (20) and the coating of the pole piece (70), and the scraping driving structure is used for driving the scraper (20) and the pole piece (70) to relatively rotate by taking the shaft of the roller (80) as the center, so that the coating is scraped.

An analysis device measures ion concentration in a sample to detect an abnormality using an ion selective electrode. The analysis device includes an ion selective electrode that obtains a potential based on the ion concentration, a reference electrode that obtains a potential based on a reference liquid, a measurement unit that measures an electromotive force between the ion selective electrode and the reference electrode, an analyzer that analyzes a potential change of the electromotive force in a certain time region, and a storage that stores abnormality analysis data indicating a relation between the potential change and an abnormality of the analysis device. The analyzer acquires a parameter for the potential change of the electromotive force measured by the measurement unit, and analyzes the abnormality of the analysis device based on the parameter and the abnormality analysis data stored in the storage.

The present invention relates to an apparatus for droplet manipulation, the apparatus comprising: a drive module configured to receive control signals and operate an electrowetting-on-dielectric (EWOD) chip configured to manipulate droplets; a droplet detection system having a light source and a lens-free imaging device configured to obtain at least one image including a droplet on the electrowetting-on-dielectric chip; and a control unit configured to receive at least one image from the droplet detection system and send control signals to the drive module. The control unit is further configured to adjust at least one of the control signals as a function of the at least one image. The present invention also relates to a system comprising the apparatus and an electrowetting-on-dielectric chip configured to receive signals from the drive module.

The invention provides a greenhouse gas emission flux monitoring method for a regional sewage pipe network. The monitoring accuracy and efficiency are improved. The method comprises the following steps: S1, drawing a mobile monitoring route guidance diagram and constructing a drainage pipe network node data set, wherein the drainage pipe network node data set at least comprises latitude and longitude coordinates and node numbers; s2, monitoring greenhouse gas emission plume data based on the mobile monitoring route guidance diagram; s3, combining the greenhouse gas emission plume data with the drainage pipe network node data set, constructing a drainage pipe network node plume data set, and drawing an emission hot spot distribution map; s4, according to the drainage pipe network node plume data set and the emission hot spot distribution diagram, key node static box field monitoring is carried out, and the greenhouse gas emission flux is calculated. According to the method, the uncertainty of sewage pipe network flux measurement is effectively reduced by combining mobile and static monitoring technologies, and a monitoring means which is simple to operate, economical, efficient and accurate in result is provided.

The technologies described enable tracking statuses of and performance metrics for alcohol sensing devices, with respect to performing device integrity checks in order to ensure that testing of provided samples is performed properly. Systems described include alcohol testing devices including flow tubes, alcohol sensors, pumps, supplementary sensors, processors, and user interfaces. Methods described include steps for performing a set of integrity checks in coordination with receiving samples (e.g., breath samples, transdermal samples, etc.) from users.

The application discloses a kind of mine gas concentration inspection devices, including guide rail, is installed in the top of roadway, and along the extension direction of roadway arrangement;Mobile device, is installed on the guide rail, can move along the guide rail;Detection device, is fixed in the lower end of the mobile device, the lower end of the detection device is fixed with arc-shaped frame, the shape of the arc-shaped frame is adapted to the top of roadway, the tail of the detection device is provided with negative pressure fan with its communication;Drive assembly, is installed on the arc-shaped frame, and can reciprocatingly move along the extension direction of the arc-shaped frame, the lower end of the drive assembly is provided with sampling assembly, and the sampling assembly is communicated with the detection device by hose;Control module, in the interior of the mobile device, can be coordinated control each component and carry out segmented multi-point sampling detection, and early warning light, it is located in the front end of the detection device, can carry out sound-light mixed early warning.

The present invention relates to a method for detecting and / or quantifying an analyte in a sample using mass spectrometry. The method of the invention comprises: extracting the analyte from the sample using solid phase extraction (SPE) so as to obtain an SPE extract comprising the analyte, concentrating the analyte, said concentrating comprising evaporating solvent from the SPE-extract; and detecting and / or quantifying the analyte in the sample using mass spectrometry.

Various examples are provided related to slide preparation. In one example, a slide preparation apparatus includes a support surface, an upper surface opposite the support surface, and a sample tube holder. The upper surface can include a slide channel extending to a stop, a fiducial mark disposed in the slide channel, and a support bar extending across the slide channel. The sample tube holder can secure a sample tube in a vertical position adjacent to an end of the upper surface adjacent to the stop. When a syringe is supported by a sample tube positioned in the sample tube holder, a needle of the syringe can be aligned with the fiducial mark when it is seated in a guide groove of the support bar.