104results about How to "Large sampling volume" patented technology

Methods and kits for the isolation of organisms. Such methods and kits are particularly useful for concentrating and recovering viable organisms from food material. The recovered organisms are of sufficient number and purity to allow detection using a biochip device.

A needle set for a biopsy device is disclosed. The needle set includes an outer member, a cylinder lumen within said outer member, an inner member having a cannula and an inner lumen. The inner member is slidably disposed within the cylinder lumen. The biopsy device also includes a cylinder seal member that is disposed within the cylinder lumen and a cannula seal member attached to the outer surface of the cannula. The cylinder seal member and the cannula seal member define a vacuum chamber therebetween.

Novel rapid, efficient sample collection systems, devices and methods are disclosed which remove and capture particles, and especially potential bioterrorism particles from surfaces into a liquid sample. The devices were developed primarily for obtaining samples of biological contamination from environmental surfaces. Biological particles, as described here, include bacteria, viruses, and other microorganisms, and other particles of biological origin including nucleic acids, proteins, and toxins.

The invention discloses a gatherer of deep soil of the moon. An upper end surface of a housing of the gatherer is provided with a drilling machine and mechanical arm connecting device. A first separator plate, a second separator plate and a third separator plate are installed in the housing from top to bottom. A screw driving motor is installed on the first separator plate and drives a screw by a gear. A slide block in cooperation with the screw is fixed on a slider. Four guide rods pass through four through holes located at an end of the slider. A drill pipe driving motor is installed in the middle of the four guide rods. The drill pipe driving motor drives a drill pipe connector by a gear. Electromagnet driven wedges are arranged in the drill pipe connector. The electromagnet driven wedges stretch out from pin grooves of inner conical surfaces of corresponding drill pipes. A drill pipe rotating disk is installed in the center of the second separator plate. The drill pipe rotating disk is in cooperation with a drill pipe rotating disk driving motor by a gear. The third separator plate is arranged under a clamping device. Multiple drills are installed on a drill rotating disk along a circumferencial direction. On the third separator plate, a drill rotating disk driving motor is in cooperation with the drill rotating disk by a gear. A lunar soil bag is enclosed in the drill pipes having hollow structures. The gatherer of deep soil of the moon has the characteristics of compact structure, small floor space, high reliability of a transmission mode, large drilling and production depth, large sampling amount and simple and reliable sample recovery.

Methods and devices for the selective lysis of cells in a sample comprising micro-organisms such as bacteria are provided. The selective lysis is obtained by incubating the sample in a non-ionic detergent under alkaline conditions.

The present invention pertains to a method for isolating extracellular nucleic acids from a sample, wherein said sample is optionally stabilized, by binding the extracellular nucleic acids to a solid phase which carries anion exchange groups, comprising the following steps: binding the extracellular nucleic acids to the solid phase in a binding mixture having a first pH which allows binding the extracellular nucleic acids to the anion exchange groups of the solid phase; wherein the sample makes up at least 85% of the volume of the binding mixture; separating the solid phase with the bound extracellular nucleic acids; optionally washing the extracellular nucleic acids; optionally eluting extracellular nucleic acids from the solid phase. The method has the advantage that large sample volumes can be processed and that extracellular nucleic acids can be isolated rapidly with a high yield. The method is particularly suitable for automatable processes.

A quick ferrographic analysis method based on digital video includes the following steps: adopting a designed flow-controllable micro-channel device and a ferrographic microscope to be integrated into a whole; enabling a diluted oil sample to pass through a micro-channel directly; acquiring a clear abrasive particle image by regulating the focal length of the ferrographic microscope; sending the moving video of abrasive particles in the micro-channel to a computer through a digital camera; directly analyzing image frames through computer software to realize accurate positioning and characteristic identification of a plurality of characteristic abrasive particles to form a characteristic library. As abrasive particles tumble in the fluid, spatial characteristics of the abrasive particles from different perspectives can be acquired through characteristic identification of different frame images; through digital video image acquisition and fast computer automatic analysis, the advantages of an off-line analysis technology and an on-line analysis technology are combined, a novel method of acquiring abrasive particle characteristics on the basis of dynamic video is proposed, and real-time, continuous, high-accuracy and efficient on-line monitoring for the abrasion condition of the equipment is realized.

Methods for measuring chemical oxygen demand, a composition and a kit useful for measuring chemical oxygen demand, a method for calibrating a chemical oxygen demand analysis method, and a method for determining carbonaceous chemical oxygen demand are disclosed.

The invention provides, inter alia, methods of extracting an analyte from a solution comprising the steps of: passing a solution containing an analyte through an extraction channel having a solid phase extraction surface, whereby analyte adsorbs to the extraction surface of said extraction channel; purging bulk liquid from said extraction channel; and eluting the analyte by passing a desorption solvent through the channel. In some embodiments, the analyte is a protein. The invention further provides reagents, channels, columns and instrumentation related to this and other methods.

The invention relates to a method and device for enriching and sampling xenon in atmosphere at low temperature. The method comprises the following steps of: enriching the xenon in the atmosphere at low temperature, and realizing enrichment concentration of the xenon by using four levels of adsorbing columns at the same time and removing other impurities synchronously. According to the method for enriching and sampling the xenon in the atmosphere at low temperature, disclosed by the invention, active carbon serves as an adsorbing agent, thus the complexity and the realization difficulty of the method are reduced, and no spare time exists; in addition, the device disclosed by the invention can be used for carrying out continuous sampling and has a simple structure; and the method disclosed by the invention is simple and convenient, and is large in sampling amount.

A coded mass spectrometer incorporates a spatial or temporal code to reduce the resolution / sensitivity dichotomy inherent in mass spectrometry. The code is used to code one or more portions of a mass spectrometer. Coding patterns, such as Hadamard codes, Walsh codes, and perfect code sequences can be used. The coding can be spatial, for example, by using an aperture mask and / or temporal, for example, by coded injection of ions for analysis.

The invention relates to an on-line sampling device for multi-phase flow liquid. The device comprises a container which is uprightly installed, wherein the lateral surface of the upper end of the container is provided with a hole which is connected with an inlet pipeline, a spiral passage with a downward spiral angle is arranged in the container, and the inlet pipeline is connected with an inlet of the spiral passage; and the inner wall of the lower part of the container is welded with an annular liquid storage bin, 'L'-shaped diversion baffle plates are uniformly distributed on the inner wall of the container between the liquid storage bin and an outlet of the spiral passage, the upper end of the container is connected with a gas discharging pipeline, the lower end of the container is connected with a discharging pipeline of a process system, and the bottom of the liquid storage bin is connected into a liquid sampling and discharging pipeline. The device has the advantages of novel design, simple structure, elimination of movable component, high safety and reliability, convenience in installation, low cost, good applicability, high sampling quantity and high sampling accuracy and has obvious significance for reducing the product cost of a multi-phase metering product and improving the measurement accuracy of the phase division rate.

The invention provides a method for simultaneously determining trace gold, silver and palladium in a geochemical sample. The method comprises the following steps: firstly, digesting the geochemical sample by using 1:1 chloroazotic acid in a constant-temperature boiled water bath in a sealed manner; secondly, selectively enriching the trace gold, silver and palladium by using diphenylthiourea loaded polyurethane foam, and separating other interference elements; and finally, drawing a standard curve of Au197, Ag107 and Pd105 by adopting an inductively coupled plasma source mass spectrometer through a standard curve method, and simultaneously determining the trace gold, silver and palladium in the sample. According to the method provided by the invention, the problem that other main interference elements with the abundance of geochemical elements, which is hundreds, even thousands of times of that of the silver and the palladium, have interference on mass spectrums of the silver and the palladium is solved; and compared with a traditional emission spectrum and graphite furnace atomic absorption spectrometry, the sampling amount in analysis of the silver in the geochemical sample is increased by dozens of times, so that the influences caused by gold grain effect of the geochemical silver are effectively overcome.

The invention discloses a ship ballast water collection device which comprises a hollow sealed water reservoir, and the water reservoir is connected with an air extraction pump and a water collection pipe respectively in a dismountable and sealed mode. The ship ballast water collection device provided by the invention collects and stores a water sample through aseptic operation, ensures that the collected water sample is not polluted, has great sampling amount, is convenient and rapid to take water and is applicable to different ships.

Novel rapid, efficient sample collection systems, devices and methods are disclosed which remove and capture particles, and especially potential bioterrorism particles from surfaces into a liquid sample. The devices were developed primarily for obtaining samples of biological contamination from environmental surfaces. Biological particles, as described here, include bacteria, viruses, and other microorganisms, and other particles of biological origin including nucleic acids, proteins, and toxins.

The invention discloses a rapid detection method and a device for ferrous oxide in sintered ores. The detection method comprises the following steps: subjecting a sample to a pre-treatment, establishing a standard curve between the sintered ore magnetic conductivity and the corresponding ferrous oxide content in the sintered ore, and finally substituting the measured sample magnetic conductivity into the standard curve between the sintered ore magnetic conductivity and the ferrous oxide content to calculate the concentration of ferrous oxide in the sinter ore sample. The device comprises a detection signal generating unit, the upper end of the iron core of the transformer of the detection signal generating unit is provided with a magnetic circuit disconnecting gap, the magnetic circuit disconnecting gap is provided with a sample measuring cavity, which is used to place an sintered ore sample and make the sample contact and connect to the iron core; a signal collecting unit is used to convert the collected voltage signals into magnetic conductivity signals and then transmits the magnetic conductivity signals to a signal processing unit, the signal processing unit is used to substitute the magnetic conductivity into the standard curve to calculate the ferrous oxide concentration of the sample, and the device has the advantages of low detection cost, rapid analysis speed, and accurate detection result.

The invention relates to an amphibious soil profile gas in-situ collecting device, which comprises an outer protecting tube and an inner sampling tube which are made of polrvinyl chloride, wherein air vents are fully distributed on a wall of the outer protecting tube and a wall of the inner sampling tube; a waterproof and breathable film made of polyethylene is pasted on an outer wall of the inner sampling tube in a sealing way; a gauze is pasted outside the waterproof and breathable film; two ends of the outer protecting tube and the inner sampling tube are respectively sealed by adopting a first silicone plug and a second silicone plug with the middle part being provided with a gas conduit in a penetrating way; one end of the gas conduit is stretched into the middle part of the inner sampling tube; and the other end of the gas conduit is extended out of the outer protecting tube and is sealed by a third silicone plug. The device is simple and convenient to manufacture and use, is convenient to recover and utilize, has low cost, durability, good waterproofness, high air permeability and larger sample volume, is amphibious, can be applied in soil with high contents of rocky soil and sand grains, and can be used for effectively preventing a field installation process, plant roots and soil animals from damaging the device.

Method and apparatus for high-sensitivity fluorescence detection wherein (I) a sample comprising fluorescent molecules is made to flow through a channel structure (1) including a constricted region (2) with a dimension corresponding to the size of a tightly focused laser spot and with extremely thin, transparent walls; (II) a laser beam (3) is focused inside the constricted (2) and thus exciting molecules passing through the constricted region (2); and (III) the fluorescence emitted due to excitation is detected. This enables direct determination of the concentration of a sample without use of internal or external standards. A method for the production of a flow cell for use in the method or apparatus, wherein a part of a channel structure (1) is heated until its melting point is reached, followed by pulling of the structure to lengthen the melted region and make it thinner until it has a dimension corresponding to the size of a tightly focused laser spot at the diffraction limit.

The invention discloses a bridge-type intelligentized car coal sampling machine. The bridge-type intelligentized car coal sampling machine comprises a steel structure room, a cart mechanism, a trolley mechanism, a sampling head, a belt feeder, a crusher, a divider and a sample collector, wherein the upper part of the steel structure room is provided with a crane beam; the crane beam is provided with a track; the cart mechanism is connected to the track in a sliding mode; the trolley mechanism is connected to the cart mechanism in a sliding mode; the sampling head is installed on the trolley mechanism which is provided with a hydraulic lifting system controlling the sampling head to lift; the sampling head is a full-fracture sampling head; the steel structure room is also internally provided with an operation room which is internally provided with a display, an industrial control machine, a PLC cabinet and a power cabinet; the steel structure room is also internally provided with a monitoring device and a wireless radio frequency recognition device; the top of the steel structure room is provided with a photographing and positioning device and an illumination device. The bridge-type intelligentized car coal sampling machine can sample a full fracture, is high in sampling precision, and can sample automatically, thus cheat brought by artificial sampling is eliminated, and the sampling process is rapid.

The invention belongs to the technical field of researches of soil science and environmental science, and specifically relates to a ridge soil sampler applied to ridge planted crops. The ridge soil sampler mainly comprises a sampling head, a connection rod, a support rod, a handle and a lever, wherein one end of the lever is fixedly connected with the handle and the other end of the lever is hinged with one end of the connection rod through a pivot device; the other end of the connection rod is fixedly connected with the top end of the sampling head; one end of the support rod is fixedly connected with the handle and the other end of the support rod is fixedly connected with the sampling head; the sampling head is composed of two hollow 90-degree fan-shaped grab buckets; sampling ports are formed in the fan-shaped grab buckets; the edges of the sampling ports are shaped like waves or sawteeth; and the sampling ports of the two fan-shaped grab buckets are meshed. The ridge soil sampler is simple in structure, convenient to use, less in disturbance to crop growth and high in precision and representativeness, and is suitable for the soil sampling of ridge cultivation.

The invention relates to an atmosphere collecting device for an inflatable unmanned helicopter. The device is connected to a frame of the unmanned helicopter. The device comprises a vertical inflatable tube opened at two ends and a gas collecting bag sleeving the lower end opening of the vertical inflatable tube; the vertical inflatable tube is internally provided with an inflatable fan which is controlled to start or stop through a ground remote controller; the vertical inflatable tube is fixedly connected with the frame through a horizontal connecting rod; the opening of the gas collecting bag is fixedly connected with the lower end opening of the vertical inflatable tube through an elastic sealing clip. In use, the unmanned helicopter carries the gas collecting device to collect atmosphere in air and remotely controls to open the inflatable fan, so that the gas collecting bag inflated is automatically separated from the unmanned helicopter under atmospheric resistance. The elastic sealing clip automatically closes the gas collecting bag and the gas collecting bag drops under the action of the gravity. The device provided by the invention is short in collecting time and high in efficiency, and the requirement on duration of flight of the unmanned helicopter is reduced. Moreover, the device is simple in structure, reasonable in design and low in cost and effectively solves the problems that in altitude gas collection, equipment is complex, inconvenient to carry, poor in automatic effect and the like.

The invention belongs to the technical field of microplastic sampling, and discloses a system and a method for sampling microplastics in seawater. The system comprises a flowmeter and a filter connected with the flowmeter, wherein the filter is provided with a water inlet, a water outlet and an ultrasonic vibrator; the water inlet of the filter is connected with the flowmeter; a detachable filterscreen is arranged between a filter shell and the ultrasonic vibrator; a channel between the shell and the filter screen is connected with the water inlet; a channel between the filter screen and theultrasonic vibrator leads to the water outlet; a valve is arranged on the bottom part of the shell. According to the technical scheme, the microplastics in a water body can be acquired on site, and the microplastics in a large sample water body are quantitatively enriched so as to be analyzed and detected by a laboratory. The system and the method are large in sampling quantity, high-efficient, accurate, simple, convenient and flexible.

A method and apparatus for analysing particulate material having one or more crystalline substances, the apparatus including: a grinder for receiving a sample extracted from the particulate material and grinding the sample into powdered material having a designated particle size; a measurement station including an X-ray generator for illuminating the powdered material with an X-ray beam and an X-ray detector for detecting X-ray diffraction patterns from the powdered material; a carrier for receiving the powdered material from the grinder and conveying the powdered material through the measurement station; and a processor configured to: receive the X-ray diffraction patterns of the powdered material from the X-ray detector; analyse the X-ray diffraction patterns to determine a series of sequential composition determinations of one or more crystalline substances in the powdered material as the carrier conveys the powdered material through the measurement station; and determine composition of the one or more crystalline substances in the sample from the series of sequential composition determinations.

The invention discloses sample surface coating sampling equipment. The equipment comprises a base which is horizontally arranged, a sample fixing device and a blade sliding control device, wherein the sample fixing device is slidably arranged on the base along the Y-axial direction, and comprises a pedestal and pressing devices arranged on two sides of the pedestal, a sample is loaded on the pedestal, and the pressing devices are used for pressing and fixing the sample; the blade sliding control device is provided with a blade, and is slidably arranged on the base along the X-axial direction; and a blade drive device is fixedly connected with the blade and drives the blade to scrape the surface coating of the sample on the upper surface of the sample in a rotating way. The surface coating sampling equipment disclosed by the invention can be widely applied to scraping the surface coating of the sample, can be used for effectively improving the sampling work efficiency of the surface coating of the sample, and has the advantages of simple structure, convenience in use, large sampling amount, safety and reliability.

The invention discloses a surface soil sampler fast and convenient to use. The sampler comprises a handle and a sampling head which are connected with each other. The sampling head comprises a top plate and a bottom plate which are stacked in a spaced mode. A closed structure is arranged on the side, close to the handle, between the top plate and the bottom plate, and other portions are open. The surface soil sampler is simple in structure and can be used for horizontal sampling and vertical sampling, and errors of samples are reduced; samples in the soil sampler do not need to be collected by hand, and thus the surface soil sampler is fast and convenient to use, and labor is saved. When the vertical sampling mode is selected, the sampling amount is large, and damage to the soil layer structure of facility soil and the roots of plants is small; when the horizontal sampling mode is selected, soil of a specified layer can be collected, and the section characteristics of soil samples are perfectively preserved. A worker can select different sampling modes according to requirements or specific environments.

The invention provides a sampling device and method for the plant balance pressing juice, which is proper for the plant physiology, bionomy and agriculture study. So it is important in using water, fighting drought and breeding of crop. The plant juice sampling device is made up of the high-pressure tank, the tank switch, the manometer, the air inlet controlling valve, the high pressure connecting pipe, the pressure room, the room cover, the sealing collar, the precise manometer, the exhaust controlling valve and vent. In close condition, it give the pressure on the balance pressure at sampling part and keep it by the gas-liquid balancing technology to extract the juice of leaf, tress, stalk and root for test. The merits of it is that the sample is near the real condition, the time is short, the quantity is much, the sampling part is not limited; the precision and quantity are all meet the advance analysis request; also it can detect the water potential of sampling organic.

The invention provides a lime-soil compaction pile sampling device and method. The sampling device comprises a jack sampling frame, a transmission guide rod, a fixed rod and a sampling knife; the jacksampling frame comprises a four-connection-rod support, a lead screw, a base plate connected with one side of the four-connection-rod support and a carry plate connected with the other side of the four-connection-rod support; the lower end of the transmission guide rod is connected with the upper end of the lead screw; the lower end of the fixed rod is fixedly connected with the base plate; the sampling knife comprises a first cutting ring and a second cutting ring coaxially fixed on the carry plate; the diameter of the first cutting ring is more than that of the second cutting ring, and thefirst cutting ring is sleeved on the second cutting ring; and the length of the first cutting ring is more than that of the second cutting ring. With the application of the sampling device provided bythe invention, the needed sampling hole is small, meanwhile, the sampling personnel does not need to punch for sampling, the security risk caused by manual punching for sampling is avoided, and the sampling cost is greatly reduced. After sampling is completed, the sampling hole only needs to be filled with sand, and backfilling is relatively simple.

The invention discloses a surface oil sampler capable of controlling the sampling quantity. The surface soil sampler comprises a handle and a sampling head which are connected with each other, wherein the sampling head comprises a fixed plate and a movable plate which are folded mutually with an adjustable interval; the fixed plate is fixedly connected with the handle; one sides, close to the handle, between the fixed plate and the movable plate, are of a sealed structure, and the other parts of the fixed plate and the movable plate are open. The surface oil sampler is simple and convenient to operate, capable of horizontally sampling and vertically sampling, large in sampling quantity and capable of freely controlling the sampling quantity. When a manner of horizontally sampling is selected, the specified layered soil can be collected, and the sectional properties of the soil sample can be completely preserved; when a manner of vertically sampling is selected, the damage to the soil layer structure and the plant root system of the constructed soil is tiny; workers can select different sampling manners as required or according to specific environments.

A double-resonance structure for DNP-NMR experiments and / or ENDOR experiments and methods using such a double-resonance structure. The double-resonance structure comprises a microwave resonator for generating electromagnetic fields suitable for EPR and an HF resonator for generating electromagnetic fields suitable for NMR. The HF resonator is formed by a strip resonator, a section of the strip resonator at the same time forming a portion of the microwave resonator.