30 results about "Bulk samples" patented technology

The invention discloses a preparation method of a transmission electron microscope sample of a sintered neodymium-iron-boron block material, which comprises the following steps of block sample cutting, mechanical grinding, sample punching, ring sticking, pre-thinning and final thinning, so that the transmission electron microscope sample to be observed is obtained. In addition, the method is simple, feasible, economical and practical, and the sample preparation success rate can be remarkably increased.

The utility model discloses a chromatography and tangential flow filtration integrated device capable of switching flow paths, which comprises two pumps, a circulation tank, a circulation pipeline, a valve and a detection element, and a chromatography and tangential flow filtration structure is integrated on the same device. The types and the number of the circulation pipelines, the valves and the detection elements can be changed according to the process development requirements of chromatography or tangential flow filtration, the function can be rapidly switched by directly replacing the whole flow path and switching operation software, and the upper limit value adjustment of the working flow can be achieved. And the process development work originally completed by two devices can be realized by switching the flow path structure. The device can be used for chromatography and tangential flow filtration operation in a process development stage, is not only suitable for small-scale test process groping tests, but also can be used for preparation of a large number of samples and pilot scale amplification production operation, realizes dual purposes, is simple and rapid in the whole operation process, effectively improves the process development efficiency, and saves the use cost.

A method and a system for analyzing the particle size of fly ash are provided. The method includes performing drying treatment on the sample to ensure that the water content is lower than 0.5%; uniformly dispersing the particles by using ultrasonic wave or airflow dispersion technology; measuring the particle size by laser particle size analyzer to generate cumulative distribution curve; calculating the median particle size and specific surface area by cumulative distribution curve. The system of the disclosure has an automatic operation function, and may automatically complete sample treatment, particle size measurement, data analysis and result output. This method improves the accuracy of measurement and data processing, and is suitable for efficient analysis of a large number of samples, which has a wide industrial application prospect.

According to the technical scheme, the automatic water quality monitoring method is characterized by comprising the following steps that on-site sampling is conducted, and sample information is input into a printing tool and printed on a sample; transporting and handing over the water sample, scanning and inputting all sample information into a management system, and recording the sample entering time; intelligent sample distribution and circulation; performing intelligent water sample detection by using a water quality analyzer; data analysis and transmission and intelligent sample distribution and circulation comprise a sample test distribution strategy and a quality control scheme, in the method, each sample has a unique digital identity card, the system automatically distributes tasks, optimizes a detection path, greatly improves circulation efficiency, avoids deviation caused by manual selection, can continuously run for 24 hours, and has a wide application prospect. Rapid treatment of a large number of samples is achieved, and the high-throughput requirement of modern monitoring is met.

The disclosure relates to a method of preparing a sample in a charged particle microscope. The method comprises the steps of providing a sample carrier having a mechanical support contour and a grid member connected thereto. The method comprises the step of connecting said sample carrier to a mechanical stage device of the charged particle microscope. Additionally, the method comprises the step of providing a sample, for example a chunk-shaped or lamella-shaped sample and connecting said sample to the grid member of the sample carrier. The method allows, in an embodiment, easy and reliable transfer of a sample between a bulk sample and a sample carrier.

The application relates to the technical field of chemical analysis, and discloses a method for extracting, separating and detecting N-nitrosamine, which comprises the following steps: a sample obtaining step; a sample purification step; a preparation and extraction solution step; an extraction solution separation step; an extraction solution concentration step; a chromatographic detection and quantitative analysis step; the sample to be detected is crushed to a size of 0.01g of powder, and the powder is mixed with sodium chloride, barium hydroxide and water. In the application, the sample to be detected is subjected to a step-by-step sample treatment process before detection, so that the interference factors of the sample to be detected can be effectively reduced, the influence on the detection instrument is reduced, the detection result and detection data are more accurate, and when the application is detected, a large amount of sample does not need to be weighed like in the traditional detection mode, the overall operation is more convenient, and the detection demand of N-nitrosamine in smoked food is met.

The utility model discloses a sample storage rotating machine, and relates to the technical field of sample storage, in particular to a sample storage rotating machine which comprises a belt conveyor, air cylinder blocking mechanisms are supported on the two sides of the belt conveyor, a material storage frame is arranged outside the right side of the belt conveyor, and a driving mechanism is installed at the top of the material storage frame. A transmission shaft is movably supported in the material storage frame, a read-write device is supported on the inner side of the material storage frame, and the transmission shaft is sleeved with a rotating disc. According to the sample storage rotating machine, through cooperation of the transmission shaft, the tray assembly, the conveyor, the blocking air cylinder, the read-write device and the sensor, storage and read-write of multiple sets of samples can be achieved, a multi-layer three-dimensional structure is adopted, storage of a large number of samples in a single batch can be completed, the rotating positioning precision is high, the rotating efficiency is high, the occupied area of storage equipment is reduced, and the cost is reduced. And the storage capacity of multiple groups of materials is improved.

The utility model provides a full-automatic vending machine which comprises a box body, a box door and a goods taking opening are arranged on the box body, a fixing plate is arranged in the box body, a material storage tank used for storing bulk goods is installed on the fixing plate, a material falling pipe is arranged below the material storage tank, and a valve and an open groove used for installing a baffle are arranged in the material falling pipe. A cylinder is connected behind the baffle, a sealing bag is arranged in the box body and located on one side of the blanking pipe, an edge sealing device is installed on one side of the blanking pipe through an edge sealing device support and used for sealing the edge of a single-layer sealing bag, and a fuse is installed on the lower portion in the box body through a fuse support. The vending machine effectively makes up the sales mode of conventional circulation bulk goods on a vending machine, consumers can select proper bulk goods through the vending machine, the goods are automatically bagged, weighed and sealed, then bulk samples are presented to the consumers through the automatic labeling device, the shopping experience is improved, and the market competitiveness of the consumers is improved. And the safety and sanitation of commodities are ensured.

The invention relates to the technical field of medical instruments, and discloses a medical examination liquid adding diluter which comprises a device body, a sealing cover is fixedly connected to the top of the device body, a liquid inlet pipe is fixedly connected to the side face of the device body, and a fixing disc is rotationally connected to the device body and fixedly connected with an output shaft of a motor. The top of the fixed disc is fixedly connected with a liquid distribution disc, and the liquid distribution disc is fixedly connected with the device main body; the device body comprises a device shell, a driving motor is fixedly connected into the device shell, a driving gear is fixedly connected to a top output shaft of the driving motor, and a planet carrier is connected to the side face of the driving gear in an engaged mode. The gear transmission system arranged in the device realizes accurate proportioning and efficient mixing of a diluent and a mother solution, greatly shortens the dilution time of a single sample, is suitable for a scene in which a large number of samples need to be detected every day, can accelerate the dilution process through continuous automatic operation, and improves the flux and timeliness of the whole detection work.

Provided is a charged particle beam device with which work time can be reduced. A charged particle beam device 100 comprises: a charged particle beam column 1 that radiates an electron beam; a focused ion beam column 2 that radiates a focused ion beam; a first sample stage 5 that can be tilted; a second sample stage 6 that is disposed on the first sample stage 5 and can be tilted independently of the first sample stage 5; an EBSD detector 3; and a sample transfer unit 13. The second sample stage 6 has bulk sample holders 65, 66 on which bulk samples 7, 9 are placed, and a sample piece holder 67 on which sample pieces 7a, 9a extracted from the bulk sample 9 are placed, and a sample placement surface 67S of the sample piece holder 67 has an inclination angle that is set with respect to a bulk sample placement surface 66S of the bulk sample holder 66.

To collect a large volume of samples and shorten a time required for sample deactivation.SOLUTION: A plant tissue sampling device comprises: an upper support part 21; a lower support part 22 that is disposed facing the upper support part 21 and has a hole part 22c; a blade-mounted lid part 12 that is provided on a lower surface of the upper support part 21 and has a blade part 32 for cutting out a sample; a sample container part 13 that is provided below the hole part 22c of the lower support part 22, and at which the sample cut out by the blade part 32 is introduced into a container body 41 via an inlet part 42 at an upper part of the container body 41; and a cooling tank part 14 that is filled with a coolant 52 and stores the sample container part 13. The container body 41 has a container hole part 43 that allows passage of the coolant 52 from the cooling tank part 14. The blade-mounted lid part 12, upon cutting out the sample with the blade part 32 and introducing it into the container body 41, is engaged with and closes the inlet part 42 of the container body 41, and also closes the container hole part 43.SELECTED DRAWING: Figure 1

The present application relates to the technical field of rail processing, and discloses an automatic processing method for rail samples, which comprises the following steps: obtaining image information and label information of a rail to be processed; obtaining a sample type to be processed, and calling a corresponding processing model from a preset processing model database in combination with the label information; automatically clamping and positioning the rail to be processed based on the processing model and the image information; sequentially performing bulk sample cutting, small sample decomposition and finishing on the clamped and positioned rail blank based on the processing model, so as to obtain a finished sample; and marking the finished sample and automatically discharging it. The method solves the problems of low processing efficiency, poor precision consistency, insufficient intelligence, and high safety risks caused by relying on manual operation in the processing of existing rail samples.

The application discloses a kind of efficient super large liquid tank pool preparation method, with dimethyl carbonate (DMC) as solvent preparation concentration 15%-20% (w / v, g / mL) polyvinyl acetate (PVAC) solution as shell precursor liquid, with water as solvent preparation 10 vol%-70 vol% glycerol solution as core precursor liquid, by coaxial electrospinning technology, with carbon support membrane direct receiving spinning fiber, to obtain by PVAC wrapping water's fibrous liquid tank pool that can be directly used for electron microscope test.This method can prepare about 9000 liquid tank pools in 30s, greatly improve the preparation efficiency of liquid tank pool, the raw materials used in the whole process are cheap and easy to obtain, which greatly saves the cost;At the same time, a large number of liquid tank pools prepared are on the same support film or substrate, so a large number of samples can be observed under the same external conditions to observe the behavior of a large number of samples in real liquid environment, so it can be used for statistical research.

The utility model discloses a bacteria endotoxin gel method detection device based on automatic control, including work table, the upper end of work table is provided with sample holder, the right -hand member of sample holder is provided with dilution frame correspondingly, dilution frame is provided with three groups, the right -hand member of dilution frame is provided with oscillation frame correspondingly, the rear end of oscillation frame is installed tip head area correspondingly, this patent device easy operation, man -machine interface is friendly, has reduced manpower cost, has improved work efficiency, the device degree of automation is high, has reduced the risk factor that human interference possibly brings maximum limit, and whole device can realize automatic gel result determination simultaneously, result calculation can, and can real -time monitoring whole test process, realizes the traceability of metadata simultaneously, can carry out endotoxin gel method detection to a large number of samples simultaneously, adapts to the demand of large -scale detection.

This invention provides a method for identifying the textural characteristics of small-sample cooked rice from rice genetic populations. By using centrifuge tubes as the rice cooking vessel and measuring various textural parameters of the rice using a texture analyzer, the amount of each parallel sample is reduced to 0.5 ± 0.03 g. Only 2.5 g is needed to obtain the textural parameters of both fresh and reheated rice, providing a feasible method for identifying the textural phenotype of rice genetic populations, especially those with small seed quantities. Qualitative medium-speed filter paper is used to cover the tube opening, facilitating the exchange of moisture between the inside and outside of the centrifuge tube during cooking and preventing rapid loss of surface moisture during reheating. The sampling process employs whole-grain indiscriminate sampling, effectively avoiding differences in results caused by different sampling locations due to the unevenness of the inner and outer layers of the rice when sampling from a large number of samples after cooking. This invention establishes an objective evaluation method for the textural characteristics of small-sample rice based on a texture analyzer, laying the foundation for genetic research on the textural characteristics of rice.

The invention provides a target detection segmentation method, system and device for an engineering drawing steel bar bulk sample annotation area, and a storage medium. The method comprises the following steps: S1, constructing a steel bar bulk sample annotation area target detection network based on key point guidance; s2, defining a large sample annotation key point target detection network loss function, and obtaining a comprehensive total loss through hyper-parameter balance key point loss and bounding box loss; s3, collecting engineering drawings containing steel bar bulk sample annotations and carrying out data set annotation; s4, selecting a big sample annotation area target detection network model evaluation index and carrying out model training; s5, performing key point positioning correction by using a morphological image processing technology; and S6, carrying out region segmentation according to the large sample annotation information of the key point positions. According to the method, joint detection of the bounding box and the key points of the bounding box is realized, and the accuracy, robustness and generalization of reinforcement bulk sample annotation area identification based on the neural network are improved.

An automated, large-scale, energy-efficient biological material storage and retrieval system stores a large number of samples in a tray. The system includes a heat exchanger for capturing and recirculating residual energy, a movable wall, a storage compartment, a multi-tray shuttle compartment with shuttles, a plenum for maintaining the temperature of air between the compartments and along sections within the storage compartment, a mechanism for opening and closing partitions between the compartments, and a tray connector for releasing or attaching one or more trays within the compartment, the tray connector configured to minimize energy loss during operation.

The utility model discloses a sewage detection device for environmental engineering, which comprises a first supporting piece, a second supporting piece is arranged at the bottom end of the first supporting piece, the second supporting piece is in limited sliding connection with a telescopic piece, the telescopic piece is detachably connected with a sampling piece, and one side of the first supporting piece is provided with a sample piece corresponding to the sampling piece. According to the utility model, each group of sampling pieces can draw a plurality of groups of sewage samples at the same time, so that the detection period is remarkably shortened, and as for environmental engineering application requiring detection of a large number of samples, remarkable time benefits are achieved; by reducing the number of test paper required by single detection and shortening the detection time, the device is beneficial to reducing the detection cost, and meanwhile, the design of the detachable sampling piece is also convenient to clean and reuse, so that the cost is further saved.

A method for preparing a volume of interest from a bulk sample uses a particle beam system configured to accommodate and to image the bulk sample and configured to provide a particle beam for the removal of material from the bulk sample. Moreover, the particle beam system is configured to define trimming regions. A trimming region determines location and size of a volume to be removed from the bulk sample.

The present invention belongs to the field of shale oil exploration technology and discloses a method for finding oil-rich strata in terrestrial shale oil layers based on the paleomagnetic characteristics of rocks. The present invention utilizes the correlation between volcanic sedimentary materials and oil and gas distribution in shale oil layers, thereby using the paleomagnetic characteristics of shale samples as the connection point between volcanic activity and organic matter enrichment, guiding the rapid and accurate positioning of organic-rich strata in shale. Since the magnetic susceptibility test does not require rock powder, only about 10 g of rock fragments are required, and about 30 samples can be tested in 1 hour, the machine hourly fee is 3,000 yuan / hour, and each sample is about 100 yuan. Therefore, the use of the method of the present invention can save a lot of time and testing costs. It is conducive to the testing of a large number of samples and is applied to the selection of organic-rich strata in the early stages of exploration.

This invention discloses a method for enhancing reactive polystyrene / nylon interfaces using different nanomaterials, belonging to the field of polymer interface modification. The method uses maleic anhydride-grafted polystyrene (SMA) and PA6 as the base system, selecting MXene or POSS. 101 Nanomaterials were used as interface compatibilizers. Bilayer thin film samples were prepared by spin coating, and bulk samples were prepared by hot pressing, followed by heat treatment at 180-240℃ for 15-300 min. MXene utilizes surface -O, -F, and -OH groups to provide reaction sites, POSS... 101 Interfacial interactions were enhanced through physical-assisted and chemical mechanisms by the participation of epoxy groups in the interfacial reaction. After treatment, the MXene system exhibited a shear strength of 2.6 MPa and a POSS (Positive Stress Index) of [missing information - likely related to heat treatment at 200℃ for 2 hours]. 101 The system has a simultaneous shear strength of 4.5 MPa, which can effectively improve the interfacial properties of SMA / PA6 and is suitable for the preparation of high-performance polymer composite materials.

The utility model relates to the technical field of medical examination equipment, and discloses an integrated assembly line sample loading and unloading system, which comprises a sample rack loading and unloading platform module, a sample rack loading and unloading platform module, a sample rack loading and unloading platform module and a sample rack loading and unloading platform module, the dumping type sample injection module is used for receiving sample tubes dumped in bulk or conveyed by a third party and conveying the sample tubes subjected to material distribution to a dumping grabbing position; the sample transmission track module comprises a main track and a sample injection track communicated with the main track, the main track is provided with a material distribution position, the sample injection track is sequentially provided with a scanning position and a grabbing and releasing position in the reverse direction of the transmission direction, and the connection position where the main track enters the sample injection track is arranged at the downstream of the material distribution position; and the sample tube transferring module is provided with a mechanical arm for transferring the sample tube among the moving platform, the dumping grabbing position and the grabbing and releasing position. Batch frame type sample injection, bulk sample injection and third-party transmission sample injection can be achieved, a plurality of devices do not need to be correspondingly arranged, and the space utilization rate of a laboratory can be increased.

This invention provides an MXene-MOF biomimetic porous material, its preparation method, and its applications. The biomimetic porous material has directional honeycomb or layered porous channels arranged along the freezing direction, with characteristic pore sizes ranging from 20 to 200 μm. This invention uses MXene two-dimensional sheets as the framework reinforcing phase, CALF-20 as the main CO2 adsorption functional phase, and CMC as the connecting and shaping binder phase. A biomimetic hierarchical porous channel arrangement along the freezing direction is constructed through directional freeze-drying, thus balancing bulk formability, gas mass transfer efficiency, and utilization of adsorption active sites. The biomimetic porous material sample prepared by this invention achieves an efficiency of 9.89% in passive direct air capture tests, higher than the CALF-20 sample (48 h) without MXene (4.56%). The resulting bulk sample exhibits directional pores, lightweight, self-supporting properties, hydrophobicity, and a certain degree of elastic recovery.

The utility model belongs to the technical field of coal detection, and discloses a granularity observation ruler. The granularity observation ruler comprises a body, the body is made of flexible materials and provided with an attaching face and an observation face which are opposite, a first measuring ruler and a second measuring ruler are arranged on the observation face, the first measuring ruler is perpendicular to the second measuring ruler, and the attaching face is detachably connected with clothes. The body of the granularity observation ruler is made of the flexible material, so that discomfort and accidental injury caused by a hard observation ruler can be avoided when a worker climbs a bulk cargo storage yard of samples; and meanwhile, the attaching surface of the body can be detachably connected with the clothes, so that a worker does not need to hold the observation ruler to climb a storage yard, the hands of the worker are liberated, and the observation ruler is convenient to carry and has extremely high practicability.

The invention relates to the technical field of biology, in particular to a potato variety screening method suitable for whole flour processing, which is used for screening whole flour quality influence indexes, determining key influence factors, reducing workload and facilitating rapid determination. The method has the advantages of fewer used medicines and instruments, simple operation process and low cost, and can be used for batch analysis of a large number of samples; the comprehensive score ranking based on principal component analysis and the performance index based on the comprehensive evaluation model are mutually verified, and the result is reliable.

The application discloses a plastic embedding agent Big Cut resin, which is composed of a crosslinking agent and a non-reactive liquid auxiliary agent in a mass ratio of 3:7 to 7:3. The application further discloses a preparation method of the plastic embedding agent, which comprises the steps of mixing the crosslinking agent and the non-reactive liquid auxiliary agent in the mass percentage to obtain a mixture, and adding an initiator into the mixture to obtain the Big Cut resin. The application further discloses a plastic embedding method suitable for thick cutting of a large-volume sample, which embeds a biological tissue sample by using the Big Cut resin. The embedding method can realize uniform and stable polymerization of the large-volume resin, improve the cutting performance of the sample after embedding, meet the thick cutting requirement of an fMOST system, has the advantages of transparent depth imaging and adjustable refractive index, and realizes high-throughput imaging.

The utility model relates to the technical field of crystal form detection, and discloses an XRD (X-Ray Diffraction) sample tray rack which comprises an outer frame, the outer frame consists of a vertical plate I, a transverse plate I, a vertical plate II and a transverse plate II, and the vertical plate II is arranged on the right side of the outer frame. The inside of the XRD sample plate rack is divided into 100 groups of independent lattices with the same size, the bottom of the XRD sample plate rack is provided with ventilation and water leakage holes, and after cleaned sample plates are vertically placed in the lattices in the inner rack, the sample plates can be aired in the independent lattices and can be conveniently stored, so that the sample plates are convenient to store and use. A proper sample plate frame can be independently customized according to the number of laboratory sample plates, meanwhile, spring piece buckles are arranged in the independent grids, and after the sample plates are arranged in the independent grids in the inner frame, the spring piece buckles can be used for carrying out auxiliary abutting and fixing on the sample plates in the independent grids. The problem that a large number of sample discs are inconvenient to air and store after being cleaned is solved.

The invention discloses a cadmium isotope standard substance stability verification method based on organic matter interference assessment, and belongs to the technical field of environmental monitoring and geological reference material analysis, and the method comprises the following steps: firstly, randomly taking two samples in equal amount from a uniformly mixed Cd standard reference substance bulk sample to be assessed; respectively carrying out acid digestion and Cd separation and purification on the two samples, and then carrying out MC-ICP-MS measurement to obtain the delta 114 / 110 Cd value of each sample; finally, the difference value of the delta 114 / 110 Cd values of the two samples is calculated and compared with a threshold value, the uniformity and stability of the Cd isotope composition of the standard substance are judged, and the effectiveness of the method is verified according to the fact that the measurement result of the contrast sample is located in the known demonstration interval. According to the verification method disclosed by the invention, the solid powder sample is directly and separately sampled when being taken, and the standard substance is classified and evaluated according to the inherent physical and chemical properties of the standard substance, so that a reliable reference standard substance screening means is provided for the research on the Cd isotope of the environmental sample.

An automated programmable processor-controlled system and related methods for packaging an agricultural sample such as soil for testing for various chemical properties such as plant available nutrients. The packaging system includes a sample packaging apparatus processes raw bulk sample material collected in the agricultural field to be expediently and conveniently containerized for processing and analysis. The apparatus may include a grinder, compactor, container magazine, and rotatable carousel which carries a sample container between various processing stations. Bulk sample material is reduced in particle size by the grinder which is then transferred to the compactor. An actuated plunger fills and compacts the sample material into the sample container. A decapper automatically both removes and replaces the container cap before and after filling respectfully. An RFID device reads the container ID tag and writes the GPS sample collection location to the tag. The system is controlled by one or more programmable processors.