282 results about "Sample chamber" patented technology

The invention provides a dynamic heat-water-force coupling test device and test method, and relates to the technical field of rock performance test.The device comprises a sample chamber for containing a rock sample; the heat loading assembly, the pore water pressure loading assembly and the force loading assembly are integrally arranged; the heat loading assembly comprises a heating element and a cooling element so as to simulate an environment in a wide temperature range or under a freezing and thawing cycle condition; the pore water pressure loading assembly is communicated with the rock sample to establish pore water seepage loading; an axial pressure loading element of the force loading assembly applies dynamic axial pressure to the rock sample, and a confining pressure loading element of the force loading assembly applies dynamic confining pressure to the rock sample; the sealing sleeve wraps the rock sample so as to isolate the confining pressure medium from the liquid medium. According to the device provided by the invention, three dynamic loads including the dynamic temperature, the dynamic pore water pressure and the dynamic mechanical stress can be synchronously applied and accurately controlled in a single device, so that a rock sample is subjected to a mechanical test in a vivid dynamic multi-field coupling environment.

A lysis capsule for performing a cell lysis procedure includes a hollow body having an open first end and an open second end, a first porous membrane covering the open first end, and a second porous membrane covering the open second end, and the hollow body defines a lysis chamber between the first and second porous membranes. A plurality of non-magnetic beads and at least one magnetic element are disposed within the lysis chamber, and the pores of the first and second porous membranes are sized to retain the non-magnetic beads and the magnetic element within the lysis chamber. An internal control may be contained within the lysis chamber to validate an assay result and / or to validate the effectiveness of the cell lysis procedure. The lysis capsule may be disposed within a sample chamber of a fluidic cartridge.

The invention provides a nuclear magnetic resonance system and method for simulating high-temperature and high-pressure conditions. The nuclear magnetic resonance system for simulating the high-temperature and high-pressure conditions comprises a core rotor module, a temperature control and heat dissipation module, a signal enhancement and detection module and a high-pressure environment module, and the core rotor module is used for solving the problems that a traditional rotor is low in precision, short in service life and poor in adaptability. According to the nuclear magnetic resonance system and method for simulating the high-temperature and high-pressure conditions, the tolerance pressure of a sample cavity is improved, extreme high-pressure scenes such as deep sea and a mantle can be simulated, the sealing life is prolonged, the sample pollution rate is reduced, the detection accuracy is improved, the pressure monitoring delay is shortened, the pressure fluctuation is reduced, and the environmental stability is improved; the deviation of different batches of detection results is reduced to be within 2%, the system has an overpressure automatic pressure relief function, the safety of the system is improved, the system is adaptive to different types of highly corrosive samples, and the detection types are expanded.

Provided herein is an electron particle system comprising an electron source system comprising a high voltage component housed within a high voltage component volume occupied by an insulation gas, a sample chamber, and an electron beam column. Also provided herein is a charged particle system comprising a charged source system comprising a high voltage component housed within a high voltage component volume occupied by an insulation gas, a sample chamber, and an electron beam column. Further provided herein is a method of using an insulation gas in a high voltage component of an electron particle system.

According to the high-gain back scattering detector and the observation system provided by the invention, the detector can be adaptively integrated with the immersed objective lens, and the combination scheme can realize the remarkable advantage of no loss of the working distance. According to the detector provided by the invention, the light path conduction structure is optimized, and the detector is cooperatively matched with the immersed objective lens, so that the advantage of high-resolution imaging of the immersed objective lens is reserved, the efficient capturing capability of the detector on backscattered electrons is maintained, and sufficient working distance can still be ensured in a high-precision observation scene. The flexible optical fiber is adopted to complete optical signal transmission in the sample bin, the length and the overall size of the light guide pipe can be effectively reduced, and the situation that a large-size light guide pipe of a conventional scintillator type back scattering electron detector occupies too much space in the sample bin is avoided. In addition, the detector realizes four-channel independent imaging of the scintillator type back scattering electron detector through a customized four-channel light guide pipe by connecting an independent optical fiber and a PMT.

This invention belongs to the field of starch content measurement technology and discloses a device for measuring the starch content of vegetables. It includes a near-infrared LED light source array, a miniature spectral sensor, an ARM processor, and a touch screen. It also includes a pistol-shaped housing. The near-infrared LED light source array, miniature spectral sensor, ARM processor, and touch screen are located at the front end of the pistol-shaped housing. A battery compartment is located at the rear end of the pistol-shaped housing, housing a removable rechargeable lithium battery for providing power. A disassembly compartment is located at the bottom of the pistol-shaped housing, within which a sample chamber is detachably mounted via a magnetic structure. The sample chamber contains a diffuse reflective ceramic plate for detecting tuberous vegetables. A communication module, located within the pistol-shaped housing, is also included for transmitting measurement data and synchronizing it to a mobile terminal. The communication module supports LoRa and Bluetooth dual-mode transmission. This invention uses near-infrared light of a specific wavelength to penetrate the vegetable epidermis, eliminating the need for slicing / grinding, thus achieving non-destructive testing.

The invention relates to a device and method for evaluating the oil saturation of rock based on a step-by-step centrifugal volumetric method, and the device comprises a centrifugal unit which comprises a rotating support and a centrifugal tray sleeving the rotating support; the measuring unit comprises a plurality of closed detachable centrifugal tubes, the plurality of centrifugal tubes are uniformly arranged in the circumferential direction of the centrifugal tray, a pressurizing chamber, a sample chamber and a collecting chamber are sequentially arranged in each centrifugal tube from top to bottom, and the pressurizing chamber and the sample chamber are separated through a sealing partition plate and are controlled to be opened and closed through a valve; and the sample chamber and the collection chamber are separated by a filter screen. Compared with an organic solvent, the supercritical CO2 adopted by the method has obvious advantages in the quantification of the crude oil of the source rock. The oil content measuring agent has both gas diffusivity and liquid solubility, is small in molecular size, can penetrate through tiny pores of source rocks, is higher in dissolving capacity for heavy components in crude oil, and can fully extract the crude oil in various pores and reduce residues, so that the oil content of the rocks is more accurately quantified.

The utility model discloses a kind of high-purity germanium detector vacuum life measuring device, including vacuum generation module and detection component, detection component is by first detection module and second detection module intercommunication composition, vacuum generation module and detection component intercommunication;First detection module includes first vacuum angle valve, vacuum leak and release gas test chamber and first vacuum gauge;Second detection module includes second vacuum angle valve, getter test chamber, getter sample chamber, second vacuum gauge, fine adjustment valve and high-purity test gas tank;The high-purity germanium detector vacuum life measuring device of this is vacuumized to detection component by vacuum generation module, subsequently detects the leak and release gas amount of high-purity germanium detector by first detection module, and then detects the getter gas suction capacity by second detection module, i. e. The vacuum life of high-purity germanium detector can be detected and calculated;The device can effectively detect the vacuum performance of high-purity germanium detector, provide support for the maintenance of high-purity germanium detector, ensure its detection accuracy.

This invention relates to a portable on-site detection device and method for Lu-177 radionuclide activity. The detection device includes a gamma detection assembly and a circuit board installed within a housing. The gamma detection assembly comprises several pieces, each housing a gamma detection module. The space formed by the gamma detection assemblies serves as a sample chamber, with a central slot for holding a Lu-177 carrier bottle. The gamma detection module employs a combination structure of a GAGG:Ce scintillator and a silicon photomultiplier tube (SiPM). The circuit board houses a connection module between the circuit board and the gamma detection assembly, a power conversion module, a signal summing circuit for the gamma detection assembly, a digital multichannel module, and a data analysis and transmission module. The testing method includes five steps, including device initialization. The beneficial effects are that it provides technical support for accurate pre-administration dose verification of Lu-177, ensuring medication safety for patients undergoing radionuclide therapy and improving the quality of clinical nuclear medicine treatment.

The utility model relates to the technical field of similar simulation experiment equipment, and discloses an experiment device for simulating mine earthquakes induced by movement of a water-containing weakly cemented rock stratum, which comprises a frame body, two movable plate bodies vertically arranged on the frame body and a pressing plate horizontally arranged on the frame body, the two movable plate bodies are in sliding fit with the frame body in the horizontal direction, and the pressing plate is arranged on the frame body. The two movable plate bodies, the pressing plate and a bottom plate of the frame body form a sample chamber for accommodating a rock sample, and the two groups of transverse pressure applying mechanisms are symmetrically arranged on the outer sides of the two movable plate bodies; each group of transverse pressure applying mechanism comprises a horizontal displacement assembly and a pressure applying end part connected to the horizontal displacement assembly, and the horizontal displacement assembly drives the pressure applying end part to move in the direction close to the movable plate body so as to apply pressure in the horizontal direction to the movable plate body. The dynamic pressure change condition of the weakly cemented rock stratum can be truly simulated, and the method has important significance for exploring the law and solving problems.

The invention relates to the field of wafer detection, in particular to a wafer detection device and method, the device comprises a scanning electron microscope, an atomic force microscope and piezoelectric ceramics, the scanning electron microscope comprises a lens cone, an objective lens and a sample chamber, the objective lens is arranged in the sample chamber, and a sample table for bearing a wafer to be detected is arranged in the sample chamber; the objective lens is used for acquiring a two-dimensional morphology image of the surface of the wafer to be detected; the atomic force microscope is arranged in the sample chamber, the atomic force microscope is not in contact with the sample table, the atomic force microscope comprises a cantilever and a probe installed at the end of the cantilever, the probe is used for obtaining the three-dimensional structure of a wafer to be detected, and the piezoelectric ceramic is arranged at the end, away from the probe, of the cantilever; and the piezoelectric ceramic pressure realizes fine adjustment of the probe in horizontal and height directions through directional deformation. Vibration of the sample table and transmission of heat to the atomic force microscope are effectively isolated, and measurement errors caused by mismatch of vibration noise and thermal expansion are reduced. Precise control of the position of the probe is realized through piezoelectric ceramics.

A fluid sample is dispensed into a sample chamber of a fluidic cartridge, the sample chamber containing non-magnetic beads, a magnetic element, and an internal control reagent contained within an internal control pellet including an internal control for validating an assay result and / or to validate the effectiveness of a cell lysis procedure. The magnetic element is exposed to a magnetic field, thereby causing movement of the magnetic element, which causes movement of the non-magnetic beads. Movement of the non-magnetic beads causes cells contained within the fluid sample to lyse and release nucleic acids. The internal control reagent dissolves in the presence of the fluid sample or movement of the non-magnetic beads disintegrates the internal control pellet, thereby releasing the internal control into the fluid sample. Movement of the magnetic element and the non-magnetic beads causes the internal control to be distributed within the fluid sample.

Provided are a vibration-suppressing mechanism that has excellent maintainability and can effectively control vibration of a column, and a charged particle beam device using the same. This charged particle beam device comprises: a sample chamber for accommodating a sample that will serve as an object to be observed therein; a column that is disposed on an upper portion of the sample chamber and irradiates and scans the sample with a charged particle beam generated by a charged particle source; and a vibration-suppressing mechanism that is removably provided to the column, said particle beam device being characterized in that the vibration-suppressing mechanism includes a stator affixed to the column, an annular mover that is supported so as to be movable in a direction orthogonal to the axial direction of the column, a plurality of actuators that cause the mover to vibrate in the direction orthogonal to the axial direction of the column, a plurality of vibration sensors affixed to the stator, and a controller that controls the actuators according to output signals from the vibration sensors.

A device comprising a sample chamber 400 for receiving a sample collector 200, an accommodating chamber and a testing chamber 100. The sample chamber 400 is provided with a sealing film (fig 17b; 404

The invention discloses a preparation method of an iron ore concentrate powder scanning electron microscope sample, and belongs to the field of material analysis and testing. The preparation method comprises the following steps: (1) adding iron ore concentrate powder to be detected into absolute ethyl alcohol, and fully and uniformly shaking to obtain a sample solution; (2) adding a dispersing agent into the sample solution, and uniformly oscillating by using an ultrasonic method to obtain a solution after ultrasonic oscillation; and (3) pouring the solution subjected to ultrasonic oscillation into a sprayer, uniformly spraying the solution to the surface of a conductive adhesive tape fixed on an objective table of a scanning electron microscope through the sprayer, and naturally drying to obtain the iron ore concentrate powder scanning electron microscope sample. The method is simple in sample preparation process, uniform in iron ore concentrate particle dispersion and easy to operate, the problem of iron ore concentrate powder agglomeration is solved, meanwhile, a scanning electron microscope sample chamber is not polluted, and the observation result is real and reliable.

The invention relates to the technical field of scanning electron microscopes, and discloses a molecular pump damping device for a high-resolution scanning electron microscope, the molecular pump damping device comprises a first damping assembly, the first damping assembly comprises a first connecting structure, a corrugated pipe, a second connecting structure and a plurality of supporting columns, the two ends of the corrugated pipe are respectively connected with the first connecting structure and the second connecting structure, and the first connecting structure is connected with the second connecting structure; the two ends of the supporting column are connected with the first connecting structure and the second connecting structure respectively, and at least part of the supporting column is an elastic section. The first damping assembly is arranged, the first damping assembly is combined with the corrugated pipe and is provided with the elastic section and the supporting column, the elastic section absorbs high-frequency vibration energy through elastic deformation of the elastic section, and the corrugated pipe compensates axial and radial displacement and isolates low-frequency vibration through a flexible structure of the corrugated pipe; vibration transmitted from a molecular pump to a sample chamber of the scanning electron microscope can be dissipated, so that zigzag artifacts of an image are effectively eliminated, and the scanning electron microscope has relatively high imaging resolution and definition under high magnification.

This invention discloses a sludge moisture content detection device based on true density, comprising a sample chamber. The device is characterized by having a detection unit within the sample chamber, a compression unit on one side of the sample chamber, and the compression unit being installed within a support device. The detection unit includes a pressure sensor, a gravity sensor, and a limit sensor. The pressure sensor is installed on the side wall of the sample chamber, the gravity sensor is installed at the bottom of the sample chamber, and a sample tray is located above the gravity sensor. The limit sensor is located at the connection between the sample chamber and the compression unit. The compression unit includes a power drive base connected to a hydraulic rod, which is connected to a piston. The sludge moisture content detection device and method provided by this invention are simple, have a short measurement time, and utilize a non-contact method to eliminate the influence of porosity, ensuring the accuracy of sludge true density calculation and thus determining the detection accuracy of sludge moisture content.

The invention relates to a device and method for testing the freezing point of a mixed working medium, and the device comprises a first saturated vapor pressure working medium storage tank, a second saturated vapor pressure working medium storage tank, a third saturated vapor pressure working medium storage tank, a vacuum gas distribution bottle, a vacuum pump, and a sample chamber. An outlet of the first saturated vapor pressure working medium storage tank, an outlet of the second saturated vapor pressure working medium storage tank, an outlet of the third saturated vapor pressure working medium storage tank and an outlet of the vacuum gas distribution bottle are communicated and then are communicated with the vacuum pump through a first valve body; a sample groove is formed in the sample chamber, a working medium sample inlet is formed in the sample groove, and the outlet of the vacuum gas distribution bottle is further communicated with the working medium sample inlet through a ninth valve body; and the sample chamber is refrigerated by a refrigerator or liquid nitrogen.

The present application relates to a kind of high-strength steel low-angle grain boundary display and quantitative analysis method, the method comprises the following steps: step 1: sample preparation: the sample to be measured is inlaid, polished, polished, and then vibration polished, cut into 0.25-2mm thin section after being made into ordinary metallographic sample;Step 2: the sample prepared is placed in scanning electron microscope sample chamber, step 3: through EBSD acquisition crystal diffraction pattern;Step 4: utilize software to process data and show low-angle grain boundary;Step 5: utilize software to process data and quantitatively analyze low-angle grain boundary.This method displays a large number of low-angle grain boundaries in high-strength steel, and quantitatively analyzes the percentage content of different angle grain boundaries, which fills the gap in the existing microstructure observation method that cannot clearly display low-angle grain boundaries and conduct quantitative analysis, and provides important theoretical support for high-strength steel organization refinement strengthening mechanism research and on-site cooling process development.

This invention discloses a finger-driven microfluidic chip, belonging to the field of microfluidic chips. The volume of the first air bladder is different from that of the second air bladder. A check valve is disposed between the sample chamber and the second air bladder and / or the first air bladder. When one of the first air bladder and the second air bladder is pressed, the sample in the sample chamber flows between the sample chamber and the mixer, causing the sample to fuse with the pre-filled solid or liquid reagent in the first reagent chamber and enter the mixer for preliminary mixing. When the other of the first air bladder and the second air bladder is pressed, the sample in the sample chamber flows between the sample chamber and the second reagent chamber, causing the pre-mixed liquid to fuse with the pre-filled solid or liquid reagent in the second reagent chamber and be mixed in the mixer. Through the design of the first and second air bladders, the deformation volume can be precisely controlled individually each time, thereby controlling the flow of liquid. It adopts a finger-pressing method, eliminating the need for pump drive and simplifying operation. The check valve prevents liquid backflow.

Embodiments of the present disclosure relate to the technical field of testing corrosion resistance of materials, and specifically to a system and method for performing a supercritical CO2 corrosion test. The system for performing a supercritical CO2 corrosion test includes a sample loading device, a pressure regulating valve, and an auxiliary pressure regulating member. The sample loading device is configured to have a sample chamber for accommodating a sample, where the sample chamber is further configured to receive a supercritical CO2 fluid so that the sample in the sample chamber undergoes a corrosion test under a supercritical CO2 atmosphere. The pressure regulating valve is disposed downstream of the sample chamber along a flow direction of the supercritical CO2 fluid to regulate a pressure inside the sample chamber so that the sample in the sample chamber is tested under a first preset pressure. The auxiliary pressure regulating member is configured to increase a pressure at an outlet of the pressure regulating valve. According to embodiments of the present disclosure, by providing the auxiliary pressure regulating member, the pressure difference between the inlet and outlet of the pressure regulating valve is reduced, ensuring a precise regulation of the pressure inside the sample chamber by the pressure regulating valve.

The invention relates to the technical field of physical adsorption testing, particularly provides an inflation control method for a physical adsorption instrument, intelligent equipment and a storage medium, and aims at solving the problem that an existing inflation control method is low in testing efficiency. The method comprises the steps that a target pressure point set set by a user is acquired, the target pressure point set comprises a plurality of target pressure values arranged from small to large, and the first target pressure value serves as a current target pressure value; predicting a target inflation pressure value of the outer air chamber according to the adsorption quantity increment, the temperature value of the outer air chamber, the balance pressure value and the balance temperature value of the sample chamber and the current target pressure value; based on the target inflation pressure value, sequentially controlling a first valve and a second valve to inflate gas into the sample chamber through an external gas source and the outer gas chamber, and obtaining a balance pressure value of the outer gas chamber; whether the next target pressure value is selected for inflation control or not is determined according to the balance pressure value of the outer air chamber and the preset standard of the target pressure value, so that the test time is saved, and the test efficiency is improved.

This invention provides an in-situ sediment stratification sampling and culture device and method, including a base with sample chambers arranged circumferentially on the base and a turret at the center of the base. A sediment sampling and dispensing device is mounted on the turret. The sampling and dispensing device includes a sediment sampling tube, a tube extension mechanism, a pushing mechanism, and a stratification and dispensing mechanism. The tube extension mechanism drives the sampling tube to insert into the sediment for sampling; the pushing mechanism pushes the sediment out of the tube opening; and the stratification and dispensing mechanism cuts and stratifies the ejected sediment. The turret drives the sampling and dispensing device to rotate, sequentially dispensing the stratified samples into each sample chamber. Each sample chamber contains a fixative for bio-information fixation of the sediment. This invention achieves integrated in-situ low-disturbance sediment sampling, vertical stratification cutting, automated dispensing, and sample fixation, effectively avoiding information loss during sample transfer.

This invention discloses a two-dimensional infrared spectroscopy system and its detection method that combines acid-base step and pulsed heating. The system includes a femtosecond laser, an optical parametric amplifier and difference frequency generator, a frequency divider, an electronic time delay generator, a nanosecond laser, a detachable optical parametric oscillator providing 355nm light pulses, an optical parametric oscillator providing 2020nm light pulses, a monochromator and a mercury cadmium telluride array detector, an integrator and data acquisition card, a computer, a chopper, a time-resolved pulse generation chamber, and a sample chamber. This invention retains the original pulsed heating trigger mode by using a nanosecond light source with a detachable optical parametric oscillator providing 355nm light pulses. It achieves convenient switching between the acid-base step and pulsed heating modes through a dichroic mirror and a reversible reflector. Before and after switching, the propagation direction of the nanosecond pulses is completely consistent, and the relative time delay is corrected by the electronic time delay device.

The invention relates to the technical field of exosome enrichment, in particular to a centrifugal micro-fluidic chip and method for automatically and rapidly enriching and detecting exosomes. Comprising a sample chamber, a sample quantification chamber, a waste sample chamber, a reagent chamber, an efficient mixing chamber, a high-abundance protein removal chamber, an exosome sorting chamber, a carrier generation chamber, an exosome quantification storage chamber, an exosome total storage chamber, a gas generation chamber and a reagent storage chamber, the liquid conveying channel and the gas conveying channel are used for connecting the chambers and controlling the fluid to flow directionally; the rotating speed, direction and time of the chip are controlled through programming of a centrifugal machine, automatic enrichment of exosomes is achieved, and the exosome sorting cavity is configured to capture the exosomes through a bubble carrier and E-Am functional molecules. The exosome sorting device does not depend on a complex liquid pumping system and a mechanical arm, exosome sorting is achieved by programming the centrifugal sample feeding machine, the exosome is not damaged, the sorting speed is high, and the cost is low.

The present invention is a cuvette assembly for use in optically measuring at least one characteristic of particles within a plurality of liquid samples. The cuvette assembly comprises a main body having internal walls and external walls, and a plurality of cuvettes within the main body at least partially being defined by the internal walls. Each of the plurality of cuvettes has a liquid-input chamber for receiving a respective one of the plurality of liquid samples, a filter, and an optical chamber for receiving a respective filtered liquid sample caused by passing the respective one of the plurality of liquid samples through the filter. Each of the optical chambers includes an entry window for allowing transmission of an input light beam through the filtered liquid sample and an exit window for transmitting a forward scatter signal caused by the particles within the filtered liquid sample.

An extraction device assembly for extracting a sample from a sample-containing chamber of a nucleic acid amplification cartridge is provided. The assembly has a cartridge interface forming a receptacle configured to at least partially fit the sample-containing chamber therein. The cartridge interface has an aperture configured to at least partially expose the sample-containing chamber, and a collection interface having an aperture configured to at least partially align with the cartridge interface aperture and with the sample-containing chamber positioned at least partially between them. The collection interface aperture is in fluid communication with a collector. The extraction device assembly is operable to fit the sample-containing chamber in the receptacle of the cartridge interface and guide a piercing tool into the cartridge interface aperture to pierce the sample-containing chamber and liberate a sample contained therein for transferral to the collector.

Chip laboratory cartridge (1), preferably for single use, in particular for a modular medical analysis system (20), comprising a sample chamber (2), wherein a fluorescent dye (4) is contained in the sample chamber (2) and wherein the fluorescent dye (4) is adhesive to a specific target molecule.

The kit comprises an outer box body and an inner module, the outer box body is provided with a sample chamber and a heat preservation chamber from top to bottom, the bottom of the sample chamber is provided with a plurality of sample storage holes, the inner module is detachably nested in a hollow area of the sample chamber, and the heat preservation chamber is provided with a plurality of heat preservation holes. The inner module comprises an antibody module and a universal reagent module which are detachably connected in the horizontal direction, a plurality of antibody storage holes are formed in the antibody module, a plurality of universal reagent storage holes are formed in the universal reagent module, and box covers are further connected to the two adjacent side faces of the non-opening of the heat preservation cavity correspondingly; and the box cover can seal the hollow area of the sample chamber in an openable manner, wherein the inner module is detachably nested in the hollow area. According to the kit for detecting the expression condition of the antigen on the plasma cell tumor, an antibody cannot be taken wrongly, the stability and integrity of storage and taking of the kit are good, a light-proof environment is provided, and storage of a temperature-sensitive sample is ensured.

The invention relates to a testing machine and a testing machine sample chamber (12) for installation in a testing machine (10) for carrying out a material test of a material sample (18) comprising: a sample chamber body (48), a sample holding device (24) for holding the material sample (18) with a first side (26) and a second side (28), a receiving device (32) with a transparent material disc (30), an inlet device (22) for a fluid medium, wherein a sample chamber interior (20) is formed between the material sample (18) and the transparent material disc (30), which can be filled with the fluid. The invention further relates to a testing method for carrying out a material test of a material sample (18), a computer program, a machine learning model and a data processing device for controlling and / or regulating a testing machine (10).