68 results about "Specimen preparation" patented technology

The invention relates to a rock rough interface nonlinear seepage visualization test device and method. The device is characterized in that a fissure surface digitalization module generates a digitalized fissure model by obtaining natural rock sample fissure three-dimensional point cloud data through noise reduction, feature extraction and parametric modeling; the crack test piece preparation module is used for preparing a photosensitive resin crack test piece by adopting photocuring 3D printing based on the digital crack model, and then carrying out surface silicon dioxide nanoparticle spraying treatment to obtain the crack test piece; the multi-field flow field acquisition module is used for acquiring flow field information of the crack test piece by applying a microscopic flow field visualization measurement technology; and the seepage modeling analysis module identifies a seepage interface and extracts a dominant flow path based on the flow field information, and fits a nonlinear seepage curve in combination with a Forchhe immer equation to finally obtain a three-dimensional correlation model representing fracture seepage characteristics. The device can accurately reproduce the physical characteristics and seepage environment of the natural rough fracture, and effectively capture the nonlinear seepage rule under the multi-field coupling condition.

This invention provides a method for spatial positioning of concrete aggregates, a device for making concrete specimens, and a method for casting concrete specimens, belonging to the field of specimen preparation technology. The positioning method establishes a three-dimensional space by collecting and building an aggregate model library. Aggregate models are automatically arranged in the space according to a preset aggregate gradation ratio and quantity. Using a preset height as a stratification benchmark, the space is divided into several layers from bottom to top, and a corresponding layer number is generated for each aggregate model based on the height of its lowest point. The outer contour of the aggregate to be positioned is projected upwards as a defined range, with the positioning point located within this range and intersecting the outer surface of the aggregate. The centroid projection line of the aggregate to be positioned passes through the positioning point or is located within the connection range of the positioning point. This yields the layer number and positioning point coordinates of the aggregate to be positioned in the specimen making device during subsequent specimen casting. This method achieves precise placement and stable positioning of the aggregates, improving the consistency of the specimen structure and the reliability of experimental data.

The utility model relates to a three -axis sample preparation device with grading limiting function relates to geotechnical mechanics experimental equipment technical field, it includes with centering the lock base for fixed three -piece mould of clamping groove, with the tamping hammer subassembly for tamping treatment to soil material in three -piece mould of hammer head and with the limiting component for the limiting of hammer head moving path of limiting disc and is used to three -piece mould's direction of moving away or close, limiting disc is along the moving direction of hammer head and adjusts position and restricts the moving end position of hammer head in stages, tamping hammer subassembly still includes the guide rod for connecting hammer head of wearing in limiting disc and the limiting baffle ring of setting at the side of guide rod away from hammer head, limiting baffle ring and limiting disc abut and are used for the downstroke of rigid locking hammer head. The utility model has the effect that improves the precision of actual compaction thickness in compaction process.

To provide an improved device and method for acquiring an aliquot from a liquid-based biological sample such as a Papanicolaou smear test sample, while minimizing the risk of secondary contamination.SOLUTION: An automated system for processing a sample contained in a liquid sample container includes an automated tool head configured to rotate about a first axis, and to translate along a second axis different than the first axis, an analytic element positioner having an analytic element holder configured to releasably hold an analytic element, and a specimen transfer device mounted on the tool head, where the tool head is configured to automatically position a working end of the specimen transfer device to obtain a specimen from a sample container held in the sample container holder, and to transfer the obtained specimen to an analytic element held by the analytic element holder, respectively, through one or both of rotation of the tool head about the first axis and translation of the tool head along the second axis.SELECTED DRAWING: Figure 10

This disclosure provides an apparatus for preparing and curing tensile test specimens, relating to, but not limited to, the field of specimen preparation and curing. The apparatus includes a cabinet with a receiving space and a pull-out hole, a control mechanism within the cabinet, and a pull-out assembly. The control mechanism controls the temperature and humidity of the receiving space, enabling curing of the specimens within the space. This avoids the need to transport the specimens to a curing chamber after preparation, preventing deformation and contamination during transport and reducing labor costs. The pull-out assembly includes a body with multiple receiving slots and a cover with multiple mold holes. Each receiving slot contains an elastic element and a test block. The elastic element is located on the body and abuts the test block against the side of the cover facing the receiving slot, closing the mold hole. This ensures uniform depth of the multiple mold holes, resulting in a specimen with uniform thickness after sample application.

A specimen storage for storing an observation specimen obtained by providing an observation object on a light transmissive plate, comprises an opening and closing member that is movably attached to a main body of the specimen storage in one direction, and an abutting member configured to be able to abut on a case for housing observation specimens, wherein the opening and closing member is provided to be movable with respect to the main body so as to abut on the case when the opening and closing member is a closing state and to be separated from the case when the opening and closing member is an opening state.

The invention relates to the technical field of rock mechanics test sample preparation, and particularly discloses an energy-absorbing anchoring body structure precise preparation device and a preparation method thereof.The energy-absorbing anchoring body structure precise preparation device comprises a frame body, a first motor is fixedly installed on the surface of the frame body, a transmission box is installed at the output end of the first motor, and the transmission box is installed on the surface of the frame body; a transmission case is installed on the frame body, a three-jaw chuck is installed on the end face of the transmission case, a sleeve is installed on the end face of the three-jaw chuck, and the clamping mechanism comprises two fixed rails fixedly connected to the two sides of the inner wall of the frame body respectively. A round pipe is arranged on the anchor rod mold, and in the downward moving process of the anchor rod mold, the round pipe is in extrusion fit with two baffles below the round pipe, so that transmission of a gear and a gear block is achieved, the effect that two first arc-shaped plates are combined together is achieved, and along with continuous downward moving of the anchor rod mold, the anchor rod mold can be fixed. And the circular pipe is matched with the connecting rod through a spiral groove of the circular pipe, so that the first arc-shaped plate rotates.

The present invention provides a method for preparing a weld specimen with a crack, which relates to the technical field of weld specimen preparation. The method comprises the following steps: S1: Process the bevels at the welding ends of two base metals. The main weld is located between the two bevels, and the two base metals are welded at the main weld; S2: Process a first groove on the outer side wall of the base metal, and the first groove penetrates through the main weld; S3: Weld in the first groove to form an induced layer; S4: Process a second groove on the surface of the induced layer, and perform welding in the second groove by means of fusion welding. After welding, perform a cooling treatment to generate cracks; S5: Complete the welding of the cover layer of the main weld, and cover the crack inside the welding material during welding. By adopting the present invention, the crack morphology is realistic, and the position and depth of the crack are easy to control during the preparation process. It can be detected and verified in ultrasonic testing to ensure the reliability of the simulation test results. Compared with the fatigue loading method, this method effectively saves the production cost and time of cracks.

The invention discloses a sample preparation and detection device in liver cancer biopsy, and relates to the technical field of sample preparation and detection, the sample preparation and detection device comprises a table top, the upper surface of the table top is provided with a detection frame for detecting a sample, and the front side of the table top is provided with a conveying belt for adjusting the position of the sample; and a heating box for drying the dyed specimens is fixedly connected above the conveying belt. According to the sample preparation detection device in the liver cancer biopsy operation, the air pressure in the adjusting box can be changed through the intermittently-started warm air blower, when the warm air blower is started, the air pressure in the adjusting box is increased, the spherical spraying pipe rotates around the air supply pipe, the air spraying direction is changed, and large-range heating treatment on the interior of the heating box is achieved; the air pressure in the adjusting box is reduced, under the action of the reset spring, the spherical spray pipe also restores to the initial position, and the circulation is repeated, so that the heat distribution in the heating box is more uniform under the action of the swing mechanism, and the drying effect and efficiency of sample preparation are improved.

The invention relates to a novel manufacturing method of a macro fungus specimen, which can effectively solve the problems of single fungus specimen, low manufacturing speed and low efficiency in the prior art. The manufacturing method comprises the following steps: 1) collecting a fungus specimen; 2) alcohol dehydration and vacuum drying; 3) preparing transparent pouring glue; and (4) demolding. According to the method, the conditions of alcohol dehydration and vacuum drying are utilized, so that the time and cost for drying the macro fungus specimen are reduced; the layering sense of the specimen is improved by adopting a batch glue filling mode, and meanwhile, an optimal scheme for keeping the original state of the macro fungi is obtained; alcohol in fungi is thoroughly removed by adopting a vacuumizing method, and a set of efficient and rapid large fungus solidified specimen manufacturing method is established in the whole process. The macro fungus specimen manufactured by the method is complete in form, free of bubbles, clear in structure, high in ornamental value, capable of being stored for a long time and used for popularization of science, appreciation and teaching, and is an innovation of the macro fungus specimen manufacturing method.

The application provides a preparation method and application of an insect specimen, and belongs to the field of specimen preparation. The preparation method of the insect specimen comprises the following steps: collecting insects and observing, finding an insect mating pair, freezing the insect mating pair, fixing the frozen insect mating pair in a fixing solution, and transferring the insect mating pair into a storage solution to obtain the insect specimen. The preparation method of the insect specimen can fully expand the genital organs of the Phyllophaga, and maximally retains the mating state of the insects. After dissecting the prepared specimen, the lock-and-key theory in the reproductive isolation of insects can be verified. In addition, the Phyllophaga specimen prepared by using the method can be applied to the identification of female Phyllophaga.

The utility model relates to the technical field of test piece preparation, in particular to an inorganic binder test piece manufacturing and demolding all-in-one machine and a manufacturing system, which comprise a rack, a push-pull plate, a stirring device, a console, a mold bearing platform, a guide rod and a telescopic mechanism, a mold bearing platform is arranged on the base, guide rods are arranged on the periphery of the mold bearing platform, a mold is placed in the mold bearing platform, and through holes are formed in the bottom of the mold bearing platform and the bottom of the mold; a first telescopic mechanism and a second telescopic mechanism are further arranged on the base, the first telescopic mechanism penetrates through the through hole to push the test piece, and a cushion block is further arranged in the mold; the second telescopic mechanism pushes the mold bearing platform; a push-pull plate is further arranged on the top of the machine body, and the edge of the push-pull plate abuts against the edge of the mold. The machine body is further provided with a console for controlling starting of the telescopic mechanism. According to the device, compaction and demolding of inorganic binder test piece manufacturing can be completed at a time in the molding device, different devices do not need to be replaced, and the accuracy of test results and the efficiency of test work are improved.

The mouse intestine roll specimen preparation device comprises a box body, a box cover, a sliding plate and an insertion column, the top face of the box body is open, and the box cover is connected to the opening of the top face of the box body in an inserted mode; the sliding plate is located on the inner bottom face of the box body, the side face of the sliding plate is slidably connected with the inner side wall of the box body, and the sliding plate slides in the vertical direction. The upper surface of the sliding plate is symmetrically provided with two rows of jacks, each row of jacks comprises three jacks, the lower ends of the insertion columns are provided with insertion blocks, and the insertion blocks are connected with the holes in a pluggable mode. According to the mouse intestine dehydration device, after the mouse intestine is completely dehydrated, the sliding plate and the insertion columns are moved upwards to be completely away from formalin solution, and the insertion columns are pulled out of the insertion holes, so that the mouse intestine can be conveniently taken down from the insertion columns, and subsequent sample manufacturing is facilitated; the mouse intestine is in a specific shape, and after the mouse intestine is soaked in a formalin solution and dehydrated, the mouse intestine has a plurality of straight sections, so that the later processing and manufacturing of specimens are facilitated.

The utility model relates to a cutting device for animal specimen sampling, comprising: a container which is provided with a bottom surface and a side wall and is made of organic glass; the bottom supporting plate is provided with a bottom plate and four supporting columns, the supporting columns are erected at the four corners of the bottom plate, the bottom supporting plate is perpendicular to the bottom plate, an inserting groove is formed in the direction of one edge a of the bottom plate, the other inserting groove is formed in the direction of the opposite side edge b of the edge a of the bottom plate, the bottom supporting plate is detachably arranged in the container, and the supporting columns are higher than the side wall of the container. The bottom plate and the supporting columns are made of organic glass; and the comb plate is provided with a cross beam and comb teeth arranged on the cross beam at intervals, the comb plate is detachably inserted into the slot through the cross beam, and the comb plate is made of copper.

The present invention provides an automated system and method for collecting biological samples from liquid sample containers and distributing those samples onto analytical elements such as sample slides, as well as an automated system and method for obtaining aliquots of samples for additional testing. [Solution] An automated system for processing a sample contained in a liquid sample container comprises an automated tool head configured to rotate around a first axis and move along a second axis different from the first axis; an analytical element positioner having an analytical element holder configured to hold an analytical element in a releasable manner; and a sample transfer device mounted on the tool head. The tool head is configured to automatically position the working end of the sample transfer device by either or both rotation of the tool head around the first axis and / or movement of the tool head along the second axis to acquire a sample from a sample container held in a sample container holder and transfer the acquired sample to an analytical element held in an analytical element holder.

A device and method for preparing frozen tissue specimens are disclosed. The device includes a solid block having a top surface and a bottom surface, with two parallel side walls extending upward from the top surface. A slotted groove is formed in the middle of the solid block and extends from the top surface to the bottom surface to receive a specimen chuck, such that a head of the chuck rests on the top surface. Top edges of the side walls support a tissue slide containing an encapsulated specimen. The device may include finger grooves for manual handling and is preferably made of a heat-conducting material to assist in rapid freezing. The method involves placing the specimen chuck in the groove, depositing a freezing medium over it, and positioning the tissue slide so that the specimen contacts the freezing medium for effective specimen preparation.

The invention discloses a method suitable for manufacturing a microbial specimen by sealing UV glue, and belongs to the technical field of microbial specimen manufacturing, microorganisms are inoculated to a plate culture medium for culture, then a cultured microbial plate is sterilized and dried, the preheated UV glue is poured into the dried microbial plate, and the microbial specimen is obtained. And carrying out auxiliary defoaming by using a hot air gun or a syringe needle or a vacuum pump, and finally, irradiating for 5 minutes or 8 minutes by using a 36W ultraviolet lamp, so as to obtain the microbial specimen. The method is mainly used for keeping morphological characteristics such as bacterial colony shape and color of microorganisms to the greatest extent after a series of specimen manufacturing process steps are carried out on a cultured microorganism plate with relatively obvious bacterial colony morphological characteristics, the processing steps are simple, convenient and safe, the prepared specimen is stable, and the method is suitable for large-scale popularization and application. The exhibition period is longer, and the exhibition effect is better.

The present application relates to rock sample preparation technical field, disclose a kind of soft and hard interbedded rock specimen preparation device, including workbench, workbench top is provided with mounting groove, mounting groove is equipped with protective cylinder, the bottom of protective cylinder is equipped with shaft hole, shaft hole is equipped with grinding disc spindle, the top of grinding disc spindle is connected with grinding disc, still be provided with the polishing motor of the connecting grinding disc spindle bottom in workbench;Workbench is detachably equipped with support, one end of support is connected with the clamping mechanism for clamping test piece.The clamping mechanism includes installation cylinder, the top of installation cylinder is connected with support, the bottom surface of installation cylinder is equipped with clamping groove, clamping groove is equipped with magnetic layer, and metal plate is magnetically attracted in clamping groove.The present application can realize automatic polishing, its working process improves work efficiency, reduces the error caused by manual operation, ensures the quality stability of test piece, and clamping mechanism can quickly fix sample, can adjust sample polishing pressure, and the polishing effect is better.

This invention provides an indirect tensile strength testing method for plant roots using a splitting method, belonging to the field of plant root strength testing technology. This invention draws on the indirect tensile principle of the Brazilian splitting test for rocks, employing a three-point bending splitting method to replace the traditional direct tensile method. The steps include specimen preparation, sample fixing, loading test, strength calculation, and data screening. A single taproot is selected as the specimen, and the equivalent diameter is determined using a cross-shaped bidirectional diameter measurement method. The specimen is placed horizontally on two concave-facing arc-shaped rubber supports. Vertical pressure is applied to the midpoint of the specimen using a convex-facing indenter. The peak load is used as the failure load, and the test is terminated when the load decreases by 20%. The equivalent tensile strength is calculated using an approximate formula for rectangular cross-sections. This invention is simple to operate, has a high success rate, is suitable for the irregular circular cross-section characteristics of plant roots, allows for batch testing, and the test results closely approximate the actual stress state of the root system. It can be widely applied to root strength testing in engineering and scientific research.

The application discloses a kind of for geotextile drainage test soil column test piece preparation device, including: workbench, soil column test piece, light compactor and the like structure, soil column test piece is installed on workbench by soil column test piece fixing device, the soil column test piece is hollow structure, for filling soil body;The soil column test piece side wall leaves transverse geotextile exposed seam, for storing geotextile in the process of preparation to soil body inside;Light compactor is set on the workbench by driving device, and the driving device can drive the light compactor to move up and down, and then the soil body in the soil column test piece is compacted;Sealing mechanism is used to compact geotextile, and the gap of geotextile exposed seam is sealed;The preparation process of the application can be recycled and continuously carried out, with high work efficiency, improved preparation efficiency, and shortened test cycle.

The application provides a device and method for preparing large-size fissure rock samples in a laboratory, which comprises a fissure rock sample, a cuboid plastic net, a cuboid mold and a cement paste layer; the fissure rock sample is obtained by chiseling at a representative position; the fissure rock sample is put in the middle of the cuboid mold after being held by the cuboid plastic net; the cuboid mold is in the shape of a hollow cuboid; and the cement paste layer is formed by pouring the cement paste into the gap between the fissure rock sample and the cuboid mold. The application can guarantee the integrity of the fissure rock, effectively prepare large-size fissure rock samples, realize the laboratory test of large-size fissure rock, and change the current situation that only field rock mechanics test can be carried out.

The invention relates to the technical field of preparation of test pieces for testing, in particular to a preparation device and a preparation method of a high-water-cement-ratio cement single-liquid standard test piece. The test piece preparation device comprises a pouring mold, a curing box, an ultrasonic sensor and a cutting blade; the pouring mold comprises an upper mold and a lower mold which are detachable; the curing box is provided with a hollow cavity, a groove is formed in a side plate of the curing box, the pouring mold is placed in the hollow cavity, and the top face of the lower mold is flush with the groove; the ultrasonic sensor comprises a receiver and an emitter, and the receiver and the emitter are respectively mounted on two opposite side plates of the curing box; and the cutting blade can move along the groove to cut off the upper part of the test piece in the pouring mold. According to the invention, a cement test piece with a standard size can be obtained after the test piece is maintained and cut, and the reliability of a subsequent experiment result is ensured.

The invention provides a polar region ship steel raw plate thickness static bending sample and a method for measuring ductile-brittle transition temperature thereof, and the method comprises the following steps: step 1, setting a sample form: adopting a raw plate thickness sample, and processing a preset notch on the thick sample; step 2, loading mode: carrying out experimental testing on the thick sample by a testing machine in a three-point bending loading mode; 3, measuring the fiber fracture surface rate; step 4, testing temperature; step 5, determining ductile-brittle transition temperature: drawing a temperature-fiber fracture surface rate curve measured by a test by adopting a Boltzman formula, and selecting the temperature of the adopted fiber fracture surface rate as ductile-brittle transition characteristic temperature according to needs; according to the polar region ship raw steel plate thickness static bending sample and the measuring method for the ductile-brittle transition temperature of the polar region ship raw steel plate thickness static bending sample, the sample structure and the measuring method can be optimized, the sample preparation cost can be reduced, the measuring precision can be improved, the measuring operation can be simplified, and the testing result can better represent the overall ductile-brittle transition characteristic of a polar region ship thick steel plate.

The disclosure is directed to techniques in preparing an atom probe tomography (“APT”) specimen. The disclosed techniques form an APT specimen or sample directly on a DUT region on a wafer. The APT specimen is formed integrally to the substrate or the support structure, e.g., a carrier, under the APT specimen. A laser patterning is conducted to form a trench in the DUT and one or more bump structures in the trench. The laser patterning is relatively coarse and forms a coarse surface texture on each of the bump structures. A low-kV gas ion milling using a dual-beam focused ion beam (“FIB”) microscopes is then conducted to shape the bump structures into APT specimen.

The application relates to the field of material testing, and relates to a sample preparation device and method for hot-state repair material and substrate bonding strength. The sample preparation device for hot-state repair material and substrate bonding strength comprises a heating furnace, a material bin rotatably arranged in the heating furnace, a feeding hopper coaxial with a rotation axis of the material bin, at least one sample cylinder and a rotating motor for driving the material bin to rotate, one end of the feeding hopper is communicated with a top of the material bin, the other end penetrates out of the heating furnace, and the outer wall of the material bin is communicated with at least one connecting pipe; the sample cylinder is configured to be detachably connected to the connecting pipe, so that the sample cylinder and the connecting pipe are communicated. The sample preparation device and method for hot-state repair material and substrate bonding strength provided by the application can prepare a sample in which hot-state repair material and a substrate are fully combined, so that the strength of the hot-state repair material and the substrate bonding material can be accurately tested, and the device has the advantages of simple operation and high preparation efficiency.

The utility model discloses a specimen preparation device for electrophysiology experiments, which relates to the technical field of specimen preparation and comprises a preparation table, and a timer, a gas flow controller, a temperature controller, a microscope, an electronic balance, a cell separation operation area and a blowing and suction tube accommodating box are arranged on the upper surface of the preparation table. The mixed gas of the oxygen steel cylinder and the carbon dioxide steel cylinder is controlled by the gas flow controller to flow into the first incubation bath tank, the second incubation bath tank and the digestion bath tank, and the gas does not need to be frequently filled from the gas steel cylinders by using an oxygen bag, so that the consumed time is shorter, and the error is smaller; two first rotating shafts are driven by a rotating disc to revolve, then gears are matched with gear rings, so that the two first rotating shafts rotate, second magnets repel or attract first magnets in the revolution process, and the first rotating shafts reciprocate up and down in the revolution process; and the oxygen and the carbon dioxide in the mixing barrel are uniformly mixed.

The application discloses a kind of triaxial sample preparation device and method based on underwater deposition method, including saturator, support, water base, vacuum pump and three membrane mechanism, saturator is used for the container of underwater sand soil vacuum saturation, saturator top cover is equipped with the pipeline of connecting pressure tube, and is equipped with first valve to control on-off, pressure tube other end is connected with vacuum pump.Saturator below is equipped with the pipeline of connecting rubber tube, and is equipped with second valve to control on-off.The three membrane mechanism is the mold of triaxial sample, and water base is installed on top.Saturator is fixed on the three membrane mechanism and water base by support.The device simplifies the process of preparing triaxial sample of conventional underwater deposition method, eliminates sample heating, injects airless water, overnight cooling, sand soil solution is transferred between flask and funnel and other processes, greatly shorten the time of sample preparation, reduce test operation threshold, improve test reliability.

The utility model belongs to the technical field of specimen preparation tools, and particularly relates to a novel pathological section airing plate which comprises an airing plate body, four supporting legs, four connecting grooves and a lifting frame, a plurality of grooves distributed at equal intervals in an array mode are formed in the top of the airing plate body, and the four supporting legs are located at the four corners of the bottom of the airing plate body. The four connecting grooves are located in the four corners of the top of the airing plate body, the supporting legs and the connecting grooves are used for stacking and connecting the multiple airing plates, the lifting frame is fixedly connected with the middle side of the bottom of the airing plate body, and the lifting frame is located among the four supporting legs; the supporting legs are arranged at the four corners of the bottom of the airing plate main body, and the connecting grooves are formed in the positions, corresponding to the four supporting legs, of the top of the airing plate main body, so that when the airing plate is used for airing glass slides, a plurality of airing plates can be stacked and connected through the supporting legs and the connecting grooves, the occupied space of the airing plate in use can be reduced, and the airing plate is convenient to use. And the connection of the supporting legs and the connecting grooves can also maintain the stability among the plurality of airing plates.

The utility model discloses a specimen storage cabinet for pathological examination, and relates to the technical field of pathological specimen storage, the specimen storage cabinet comprises a cabinet body, the cabinet body is provided with a storage cavity, the front side of the storage cavity is provided with an opening, the opening is movably connected with a first movable door, the storage cavity is internally and fixedly connected with a support, and the support is fixedly connected with a second movable door. According to the pathological specimen storage cabinet, the storage cavity for storing specimens and the cavity for storing solutions are formed in the cabinet body at the same time, the solutions can be rapidly and conveniently taken through the grooves to prepare pathological specimens, the solutions are prevented from splashing outwards when the solutions are taken through the baffles, and therefore the pathological specimens can be prepared conveniently and rapidly. Environment pollution and harm to medical staff are avoided, the prepared specimens can be stored on site, the storage efficiency of the specimens is improved, and damage and pollution caused by long-distance transfer of the specimens are avoided.