39 results about "Specimen preparation" patented technology

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 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 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 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 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.

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 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 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.

The utility model discloses an adhesive shear test piece sample preparation device, which belongs to the technical field of adhesive material mechanical property shear test and comprises a base and a plurality of accommodating grooves, and the accommodating grooves are arranged on the base and used for accommodating shear samples; the front side and the back side of the base are each provided with a containing groove, each containing groove comprises a first groove body and a second groove body, the first groove bodies and the second groove bodies are separately arranged and located on the two sides of the base, and the first groove bodies and the second groove bodies are in one-to-one correspondence; the first groove body and the second groove body have height differences relative to the normal direction of the front face or the back face, and the height differences between the first groove body and the second groove body of the front face and the back face are different. The height differences between the first groove bodies and the second groove bodies on the front face and the back face of the base are different, shearing sample pieces with different colloid thicknesses can be tested at the same time, the testing efficiency is high, a lifting assembly is not needed, and the structure is simple.

This utility model relates to a specimen preparation device for testing the heat resistance of waterproof membranes. The specimen has multiple areas on its upper surface where coating layers need to be removed. The device includes a positioning unit and a scraping unit. The positioning unit includes an outer frame that encloses a positioning area matching the outer contour of the specimen, and multiple auxiliary modules mounted on the outer frame. The outer frame has multiple openings communicating with the positioning area. The auxiliary modules and openings correspond one-to-one to form scraping areas matching each area to be removed. This utility model, on the one hand, relies on the cooperation of the outer frame and auxiliary modules to ensure that each area to be removed is precisely within the scraping area under positioning, and achieves precise removal using the scraping unit with the sidewall of the scraping area as a reference, effectively improving the accuracy of sample preparation. On the other hand, it is simple and convenient to operate, has high sample preparation efficiency, and meets the need for rapid preparation of large batches of samples.

The application belongs to the technical field of sample preparation, and discloses a frozen sample preparation auxiliary tool for a scanning electron microscope and a use method thereof, which comprises: a first component comprising a first handle and a first acting end; a second component movably connected with the first component in a horizontal direction and forming a translational scissor linkage structure, the second component comprising a second handle and a second acting end; two sample bearing tables, one of which is connected to the first acting end and extends horizontally towards the second acting end, and is used for bearing a first end of a sample; the other of which is connected to the second acting end and extends horizontally towards the first acting end, and is used for bearing a second end of the sample; and two pressing members, one of which is movably connected to the first acting end and can move and press the first end of the sample, and the other of which is movably connected to the second acting end and can move and press the second end of the sample. The application is beneficial to improving the sample section quality and the sample preparation efficiency.

The present invention provides a thin section conveying device that can transport thin sections cut from a sample block by a water flow while maintaining the appropriate orientation until they are picked up by a substrate. [Solution] The section transport device is a section transport device for transporting section slices obtained from a specimen block onto a substrate in a section specimen preparation system, and is located downstream of a section blade that slices the specimen block, and comprises a bottom portion and two opposing wall portions connected to the bottom portion, with a water channel configured to allow liquid to flow between the two wall portions, and two sets of rotating belts provided along the two wall portions, with the respective belt surfaces facing each other at a predetermined distance between the two wall portions, and the opposing belt portions moving toward the downstream side of the water channel.

This invention provides a method for determining green cut quality standards that can reduce variations in the judgment regarding the finished state of the green cut surface. [Solution] The method for determining the green cut standard comprises: a specimen preparation step of preparing multiple specimens that simulate concrete used at construction sites, wherein the finished state of the green cut surface of the specimens, which is the joint surface where the green cut has been performed, differs from one another; an image data acquisition step of acquiring image data of the multiple specimen green cut surfaces; and a quality standard determination step of determining an identification specimen green cut surface for identifying green cut surfaces that meet the quality standard and those that do not from among the multiple specimen green cut surfaces captured in the image data.

The utility model discloses a rock mass direct shear sample preparation device capable of changing the dip angle of a rock bridge, which comprises a bottom plate, a grouting component arranged on the plate surface of the bottom plate and guard plate components arranged on the plate surface of the bottom plate, the grouting component is arranged between the guard plate components, the plate surface of the bottom plate is connected with a panel unit, and the panel unit is arranged between the guard plate components. The side wall of the panel unit is connected with a rotary clamping groove. According to the utility model, the influence of cracks on the shear strength of rocks is considered, secondly, by designing the rotary clamping grooves, not only can the dip angle change of the cracks be considered, but also the dip angle change of a rock bridge between the two cracks can be considered, so that one mold has multiple purposes, the manufacturing cost of the mold is saved, and finally, by arranging the grouting holes in the bottom plate, the production efficiency is improved. The injection mode of the cement slurry is changed, the generation of bubbles in the sample preparation process is reduced, and the uniformity of the sample is improved.

A specimen storage tank for storing an observation specimen in which an object to be observed is applied to a translucent plate, the specimen storage tank being provided with: an opening / closing member which is attached to the main body of the specimen storage tank so as to be capable of sliding in one direction; and a contact member configured so as to be able to come into contact with a cartridge for accommodating the observation specimen, the contact member being rotatably fixed with respect to the main body of the specimen storage tank so as to come into contact with the cartridge when the opening / closing member is in the closed state, and the contact member being configured so as to be able to come into contact with the cartridge when the opening / closing member is in the closed state. When the opening / closing member is in an open state, the opening / closing member is separated from the case.

The invention provides a novel method for preparing a fish otolith specimen, and belongs to the field of biological specimen preparation. Comprising the steps of specimen fixation, head skin dissection and segmentation, head muscle dissection and segmentation, head skeleton exposure and dissection, muscle dissection, dehydration, degreasing, polymer infiltration, fixation, solidification and the like. More importantly, the spatial position relation and the connection mode of the otolith, the skull, the brain, the nerve and the muscle system are displayed in situ. The otolith can be processed in a non-destructive mode, the otolith can be taken out or put back, the flexible display effect that the same specimen can display the details of the otolith and can also display overall dissection association is achieved, and the teaching and scientific research value of the specimen is greatly improved.

This application provides a high-temperature impact testing device and test specimen preparation method for composite material connection structures, belonging to the field of composite material testing technology. It includes a test specimen, an integrated heating and guiding device, a dynamic tensile upper clamp, a dynamic tensile lower clamp, a heating assembly, and a test loading system. The test specimen is configured as a C-shaped connecting plate butt joint structure, with the open ends of the specimen fixedly connected to the dynamic tensile upper and lower clamps respectively. The butt joint surfaces are inclined along a direction perpendicular to the C-shaped cross-section, and different angles of tensile-shear coupling loading are achieved by adjusting the inclination angle. The integrated heating and guiding device is located on the outer periphery of the test specimen and fixedly connected to the dynamic tensile lower clamp, which is connected to the lower clamp of the testing machine. The heating assembly is located on the outer periphery of the integrated heating and guiding device, and its position corresponds to the test area of ​​the test specimen. It also includes an image acquisition component and a temperature measurement system. This solution is highly operable, efficient, and yields highly reliable test results.

This disclosure relates to the field of geotechnical engineering specimen preparation technology, and relates to a method for preparing rock structural surfaces based on two-dimensional blasting, comprising the following steps: providing a rock specimen substrate; determining the foliation orientation of the rock specimen substrate; determining the drilling area and drilling direction according to the foliation orientation of the rock specimen substrate; drilling holes in the drilling area along the determined drilling direction to obtain mounting holes; preparing a blasting device, the blasting device including a shaped charge tube and an expanding agent disposed inside the shaped charge tube, the tube wall having two shaped charge zones arranged radially opposite to it, and multiple shaped charge holes arranged at intervals along the axial direction of the shaped charge tube on the shaped charge zones, the outer diameter of the shaped charge tube matching the inner diameter of the mounting holes; placing the blasting device into the mounting holes; detonating the blasting device to obtain the blasted substrate, the blasted substrate being used as the target specimen, which can completely retain the original rock structure and mechanical properties, meeting the requirements of indoor structural surface rock mechanics testing.

The utility model discloses a sampling and sample preparation device for meat food inspection, and belongs to the field of meat food inspection. A sampling and sample preparation device for meat food inspection comprises a first sampling pipe and a second sampling pipe which are connected through a reset assembly, the bottom end of the first sampling pipe and the bottom end of the second sampling pipe are each provided with an insertion tip, and the first sampling pipe and the second sampling pipe are each internally provided with a plurality of evenly-installed slitting plates. Cutting edges are arranged on the edge of the outer end of the slitting plate and the edge position where the first sampling pipe and the second sampling pipe are combined, a supporting column is mounted at the top end of the second sampling pipe, a mounting plate is connected to the outer side of the supporting column through a connecting plate, a second handle is mounted at one end of the supporting column, a pressing ring is arranged on the supporting column, and a notch is formed in the pressing ring; the width of the notch is greater than that of the connecting plate between the mounting plate and the supporting column; according to the utility model, the first sampling tube and the second sampling tube are combined, and meat strips are quickly cut through the cutting plate on the inner side, so that the cutting efficiency is improved.

The utility model relates to the technical field of specimen production, and specifically relates to a specimen production device, which comprises a first base plate, a second base plate, a cleaning assembly, a collecting assembly and a clamping assembly, the first base plate is symmetrically provided with guide rails on both sides of one side, the cleaning assembly is composed of short sliding blocks, long sliding blocks and scraping strips, the long sliding block is fixed on the top of the short sliding block through a countersunk screw, the top of the long sliding block is glued and fixed with a scraping strip, the inner sides of the short sliding blocks and the long sliding blocks are respectively provided with protrusions, and the two groups of protrusions are respectively clamped in the corresponding guide rails, the collecting assembly comprises a semicylindrical lower collecting groove, and the two sides of the top end of the semicylindrical lower collecting groove are provided with buckles, the scraping removal part is driven to move through the sliding rail sliding block structure, the efficient scraping and collection of latex residues are realized in combination with the collecting structure, the specimen is directly transferred to the platform paper by cooperation of the first base plate and the second base plate, and the efficient production of the specimen is realized.

The present invention provides a thin section conveying device that can transport thin sections cut from a sample block by a water flow while maintaining the appropriate orientation until they are picked up by a substrate. [Solution] The section transport device is a section transport device for transporting section slices obtained from a specimen block onto a substrate in a section specimen preparation system, and is located downstream of a section blade that slices the specimen block, and comprises a bottom portion and two opposing wall portions connected to the bottom portion, with a water channel configured to allow liquid to flow between the two wall portions, and two sets of rotating belts provided along the two wall portions, with the respective belt surfaces facing each other at a predetermined distance between the two wall portions, and the opposing belt portions moving toward the downstream side of the water channel.

This invention discloses a fully automated intelligent robotic workstation for nucleic acid sampling, detection, and analysis. It comprises a movable prefabricated building with multiple unit compartments arranged sequentially from left to right. These unit compartments, from left to right, are a sampling room, a sample tube loading room, a specimen preparation room, and a detection and specimen processing room. A transfer mechanism is provided between adjacent unit compartments. The sample tube loading room, specimen preparation room, and detection and specimen processing room are all enclosed spaces. Each unit compartment has a corresponding transfer hole on its wall for the transfer mechanism. The transfer mechanism includes a conveyor belt located at the bottom of the transfer hole and extending laterally, and an airtight door located within the transfer hole that divides the conveyor belt into two sections. This system can automatically collect nucleic acid samples and directly perform nucleic acid detection and analysis without needing to transport them to other locations, thus eliminating the risk of infection during transport. It can also receive nucleic acid samples collected from other locations for testing.

This invention discloses a method for preparing metallographic specimens for axial section testing of film-forming holes in aero-engines. The invention uses a specially designed clamp to hold and fix the metallographic specimen cut from an aero-engine blade, achieving stable positioning and ensuring that the axial direction of the film-forming holes is parallel to the observation surface. The invention employs a cold-mounting technique to mount the metallographic specimen, ensuring that the mounting solution fills the film-forming holes, and preventing the specimen from being compressed during mounting to avoid tilting. This invention effectively improves the pass rate of metallographic specimens, reduces the number of rework operations during specimen preparation, and thus increases the first-time success rate of metallographic specimen preparation.