48results about How to "Screening results are accurate" patented technology

The invention discloses a method for screening a feature peptide fragment for quantitatively detecting protein in food, and belongs to the technical field of protein quantitative detection. The screening method comprises the following steps: (1) comparing and analyzing matching score and interference number corresponding to a to-be-detected protein theoretical enzymolysis fragment by utilizing BLAST; (2) analyzing a mass spectrum response value and fragment abundance of a target peptide fragment through high performance liquid chromatography-tandem mass spectrometry; (3) calculating the enzymolysis rate of the target peptide fragment when the enzymolysis is conducted for 1 to 3 hours by utilizing a fitted curve; (4) calculating the recovery rate and the precision degree of the target peptide fragment. The feature peptide fragment suitable for protein accurate quantification is comprehensively screened from the aspects of specificity, mass spectrum characteristic, enzymolysis characteristic, accuracy, stability and the like and by utilizing various methods in a combined way; the screened feature peptide fragment can meet the quantitative detection requirement of high performance liquid chromatography-tandem mass spectrometry on protein in food matrix, and realizes protein quantitative detection requirement with high sensitivity, high precision degree and excellent reproducibility.

The invention relates to a fire extinguishing agent using amount screening method for extinguishing a lithium ion battery fire. The method comprises a method for determining the using amount of a fireextinguishing agent for a battery fire and a method for estimating the using amount of a fire extinguishing agent in a protection area. In the case of the method for determining the using amount of the extinguishing agent for the battery fire, the amount of the fire extinguishing agent which is needed in the unit volume space to be used for extinguishing the battery fire and making the temperature of the surface of a battery reach the expected temperature after the fire is extinguished is obtained through experiments. In the case of the method for estimating the using amount of the extinguishing agent in the protection area, the using amount of the extinguishing agent for the whole protection area is extrapolated through the using amount of the extinguishing agent for the battery fire. The method for determining the using amount of the fire extinguishing agent for the battery fire comprises the steps of single battery fire extinguishing experiment, data fitting, determination of the expected using amount of the fire extinguishing agent, determination of theoretical using amount of the fire extinguishing agent for single battery fire extinguishing and the like. According to the fire extinguishing agent using amount screening method for extinguishing the lithium ion battery fire, the using amount of the fire extinguishing agent which is used for extinguishing the battery fire and making the temperature of the surface of the battery reach an expected value in a certain space volume can be screened out through the experiments, and then reference is provided for the fire-fighting design of a new energy automobile using a lithium ion battery energy storage system and the fire-fighting design of an electrochemical energy storage power station.

The invention discloses a nondestructive stem-removal picking bionic gecko distinguishable pick-up and screening vehicle of a crabapple and belongs to the technical field of crabapple picking machines. The vehicle comprises a light moving mechanism, a flexible fruit stem clamping and nondestructive conveying picking mechanism, an extension steering device, a nondestructive protection stem-removaldevice, a simulating gecko foot bristle distinguishable pick-up delivery mechanism, a turnover cleaning purification mechanism and a rotary sliding-down screening mechanism, wherein the turnover cleaning purification mechanism, the extension steering device and the rotary sliding-down screening mechanism are arranged on the light moving mechanism; the simulating gecko foot bristle distinguishablepick-up delivery mechanism is arranged at the front end of the turnover cleaning purification mechanism and the light moving mechanism; the flexible fruit stem clamping and nondestructive conveying picking mechanism is arranged on the extension steering device; and the nondestructive protection stem-removal device is arranged on the flexible fruit stem clamping and nondestructive conveying pickingmechanism. The nondestructive stem-removal picking bionic gecko distinguishable pick-up and screening vehicle of the crabapple achieves dislocation stirring for nondestructive picking, absorption pick-up, nondestructive cleaning and roll screening.

The invention relates to a consistency screening method for high-rate lithium titanate unit cells. The screened lithium titanate cells have high consistency under a high-current discharge working condition. The method comprises the following steps of adjusting the cells to a specific charge state and storing the cells at elevated temperature for a short time so as to quickly screen out the cells with large self-discharge; and then carrying out a specific single-point high-frequency and low-frequency alternating-current impedance test on the cells stored at the elevated temperature so as to directly reflect the ohmic internal resistance and the polarization internal resistance of the cells. According to the method, self-discharge and dynamic internal resistance of the cells are rapidly andaccurately evaluated while the parameters of conventional discharge capacity, open-circuit voltage, constant voltage time, static internal resistance and the like are taken into consideration, and thescreening result is more comprehensive, accurate and effective; and according to the scheme, the consistency screening of the cells can be completed within one day, the screening cycle of the cells can be greatly shortened, the operation is simple and convenient, the energy consumption is low, and the method is suitable for large-scale batch application of an automatic production line.

The invention relates to a screening method of dominant hybridization species of German mirror carps and discloses a screening method of the dominant hybridization species of carps. The invention provides an effective screening method of the dominant hybridization species of the German mirror carps so as to ensure the genetic diversity of hybrids thereof, thus reducing the workloads, shortening the breeding period, decreasing the breeding cost and improving the success rate of selective breeding. The screening method includes the following steps: 1. morphological marker; 2. microsatellite molecular maker; and 3. data analysis. The method screens the dominant hybridization species of the German mirror carps by combining the morphological marker and the microsatellite molecular marker. The genetic differences between the species are dually tested and the screening results are more accurate.

The invention discloses a false matching removal method based on superpixel motion statistics. The method comprises the following steps: carrying out feature extraction, description and matching on two images to be matched; Segmenting the to-be-matched images I1 and I2 by using an improved superpixel segmentation algorithm to obtain two superpixel mark graphs; And establishing a superpixel motionstatistical model based on the superpixel marker map, and realizing automatic screening of registration feature points of the non-rigid deformation image through the model. According to the method, asuper-pixel segmentation strategy is adopted to replace simple rectangular grid division, super-pixel blocks obtained through segmentation are tightly connected in space, colors and textures in singlesuper-pixel blocks are kept consistent, a segmentation result better follows the moving edge of an object, and therefore it is guaranteed that feature points in super-pixels have the same or consistent moving tendency.

The invention belongs to the technical field of screening of agricultural germplasm resources, and particularly relates to a screening method for a selenium-enriched rice variety. According to the method, preliminary screening is performed at first through indoor cultivation, so that the blindness of the subsequent field screening test is reduced; South Henan black glutinous rice is used as a contrast material, so that the screening process is simple and feasible. In the indoor screening process, a selenium-enriched culture medium is used to provide a uniform and stable selenium source for rice seedlings; the accuracy of variety screening can be substantially improved; seeds are started to be cultivated in the initial stage of germination and growth; nutrition is mainly supplied by the seeds to the seedlings; the culture medium is relatively easy to prepare, and the screening method is easy to apply.

The invention discloses an automatic screening apparatus and an automatic screening method for clone bacterial strains. The apparatus comprises a three-dimensional electronic control motion platform for placing a culture dish and changing a spatial position thereof, the control side of the three-dimensional electronic control motion platform is connected with corresponding control side of a central management system; and the periphery of the three-dimensional electronic control motion platform is provided with a high resolution digital camera, a binocular stereoscopic visual sensor system, a measuring characteristic optical projection system and an optical illumination system, wherein the control side of the measuring characteristic optical projection system is connected with corresponding control side of the central management system; and the control sides of the high resolution digital camera and the binocular stereoscopic visual sensor system are connected with corresponding control sides of the central management system via an image acquisition control system. The method realizes automatic screening through monitoring logarithmic phase of the growth of the clone bacterial strains. The method realizes rapid and automatic screening for the clone bacterial strains through the apparatus; the screening results are accurate; and the screened clone bacterial strains are undamaged.

The invention discloses a decayed-sample degradation DNA (deoxyribonucleic acid) detection method. The method includes the steps of a), acquiring DNA, located at a nucleosome core region, of human blood tissue; b), sequencing the DNA at the nucleosome core region; c), comparing a sequence acquired by sequencing with human genome sequence information to acquire SNVs (single nucleotide variants), Indels or STRs genetic markers by screening; d), according to the sequences of the SNVs, the Indels or the STRs genetic markers, designing upstream or downstream primers; e), extracting the DNA of decayed samples; f), performing PCR amplification to the DNA of decayed samples through the upstream or downstream primers to obtain amplification products; and g), performing electrophoresis on the amplification products and performing type analysis according to genetic loca acquired from amplification. The decayed-sample degradation DNA is detected by the aid of the genetic markers of the nucleosome core region, the detection rate of the genetic loca is higher, acquired detection information is more comprehensive, and more accurate and reliable results can be acquired from medicolegal expertise and archaeological analysis.

The invention discloses a glass fiber cloth cover black and grey detection method. The detection method comprises the following steps: firstly, collecting a picture of a glass fiber cloth cover; converting the color image data f into first grayscale image data g0; equally dividing the first grayscale image data g0 into m first areas g0m; performing filtering processing on the plurality of first areas in the picture through a preset template, and performing arrangement to obtain second grayscale image data gt; checking the ratio of the two pieces of grayscale image data and a preset standard, and screening out boundary points; and extracting all boundary points to further judge whether the boundary points are black gray. A color picture is subjected to gray processing and then is divided into multiple parts according to a preset width, the initial gray picture is divided according to the preset width and then is subjected to respective filtering processing, so that the screening result of a final black-gray area can be more accurate, and the gray values of the image before and after filtering processing are checked according to a preset standard to screen out boundary points. And whether the cloth surface is black gray is judged according to the continuity of the plurality of continuous boundary points in the coordinate system.

The invention provides a method for high-efficiency screening of cold-resistant varieties of rice at a seedling stage, relating to the technical field of rice screening. The method comprises the following steps: selecting soil, putting the soil into a culture dish, adding nutrients, drying the seeds, selecting the seeds, soaking the seeds with a reagent, carrying out germination treatment, sowing the seeds, putting the culture dish in an artificial weather box to simulate a cold environment and recording and analyzing the cold resistance level of all the rice varieties at the seedling stage. The method provided by the invention has the advantage that the problem of low screening efficiency of the existing cold-resistant varieties of the rice at the seedling stage is solved.

The invention discloses a pile brace supporting structure screening method based on the sacrifice yield rate. The pile brace supporting structure screening method comprises the following steps that 1,a feasible region of a foundation pit pile brace supporting structure is established; 2, a noise factor set is established; 3, FLAC<3D> software is utilized to simulate the foundation pit excavationprocess, and a system response result is obtained; 4, robustness measurement indexes of the foundation pit pile brace supporting structure are calculated; 5, the cost of the foundation pit pile bracesupporting structure is calculated; 6, a Pareto leading edge is drawn according to the cost and the robustness measurement indexes; and 7, a knee point of the Pareto leading edge is obtained by applying the sacrifice yield rate, that is, the optimal foundation pit pile brace supporting structure designing scheme is obtained. By screening points of the Pareto leading edge, the influences of the similar points on knee point selection are weakened, the knee point is multiply screened to avoid trapping in the dilemma of local optimum, dependence on shape and curve fitting of the Pareto leading edge is small during knee point screening is small, and the screening result is accurate and reliable.

The invention relates to a data processing method and device, a computer readable storage medium and computer equipment, and the method comprises the steps of receiving a business request sent by a terminal, and enabling the business request to carry a user identification corresponding to the terminal; obtaining a screening machine code corresponding to the service request; obtaining current userportrait information corresponding to the user identifier from an access server request according to the service request; analyzing and executing the screening machine code through a local virtual machine corresponding to the service request, and obtaining a screening result corresponding to the user identifier according to the current user portrait information and an analysis result correspondingto the screening machine code; and returning the service request data corresponding to the user identifier to the terminal according to the screening result, so that the service request data corresponding to the user identifier can be matched locally according to the real-time user data, and the matching degree between the user data and the service request data is improved.

The invention relates to the technical field of pipeline detection, in particular to a control method and system for a pipeline damage detection robot, and the method comprises the steps: obtaining the layout information of a to-be-detected pipeline, and triggering a robot detection message according to the layout information of the to-be-detected pipeline, the pipeline detection robot is controlled to move in the pipeline and detect whether the pipeline is damaged or not; according to the robot detection message, pipeline internal image information is obtained, the pipeline internal image information is input into a pipeline damage detection model for detection, and a corresponding detection result is obtained; when a suspected fracture detection result is obtained, a damage confirmation detection message is triggered; and if pipeline damage confirmation information corresponding to the damage confirmation detection message is obtained, triggering a pipeline repair instruction according to the pipeline position. The pipeline robot has the effect of improving the efficiency of detecting the pipeline by using the pipeline robot.

The invention is suitable for the technical field of grape screening, and provides a grape particle screening machine for grape wine production and processing, the grape particle screening machine comprises a transmission assembly, an oscillation screening assembly and a linkage assembly, a feeding pipe can gradually put grape particles onto the oscillation screening assembly, then the oscillation screening assembly is driven, and the grape particles are conveyed to the transmission assembly in the operation process of the oscillation screening assembly. When the grape grains are conveyed, the conveying assembly is driven through the linkage assembly, so that the grape grains are pushed to be conveyed step by step, after the conveying assembly finishes running each time, the oscillating screening assembly oscillates once, grapes are classified according to the grape grains, the grape grains fall into the storage box according to specifications and sizes and are separated through the partition plates, and meanwhile, the grape grains are conveyed through the conveying assembly. The sensor can detect whether grapes fall or not, when no grapes fall into the storage box for a long time, it can be judged that the grape screening work is completely completed, at the moment, the sensor can automatically close the vibration screening assembly, operation is easy, the automation degree is high, and the screening result is accurate.

The invention provides a method and an apparatus for determining a semantic matching degree. The method comprises the steps of obtaining a first statement and a second statement; dividing the first statement and the second statement into x and y statement segments respectively; performing convolution operation on a word vector in each statement segment of the first statement and a word vector in each statement segment of the second statement to obtain a three-dimensional tensor; combining and / or screening adjacent vectors in one-dimensional vectors in x rows and y columns until the three-dimensional tensors are combined into a one-dimensional target vector; and according to the target vector, determining the semantic matching degree of the first statement and the second statement. According to embodiments of the invention, the to-be-matched statements are divided into the statement segments taking the word vectors as units according to a word order; the statement segments in the two statements are subjected to the convolution operation in pairs to obtain the three-dimensional tensors, wherein each three-dimensional tensor comprises local matching information of the statement segments of each statement; and a semantic matching result obtained based on the three-dimensional tensors is more accurate.

The invention provides a train tail screening method and device and a storage medium, and the method comprises the steps of determining whether a to-be-screened train meets a preset tail screening condition, and enabling the preset tail screening condition to be associated with at least one of train suspension, axle counting state collection delay and train-ground communication delay, wherein the train suspension and / or the train-ground communication delay are / is associated with a distance judgment condition included in the preset tail screening condition, and the train-ground communication delay is associated with a section idle judgment condition included in the preset tail screening condition; when the to-be-screened train meets the preset tail screening condition, determining that tail screening of the to-be-screened train is passed; and when the to-be-screened train does not meet the preset tail screening condition, determining that tail screening of the to-be-screened train is not passed. At least one of train suspension, axle counting state acquisition delay and train-ground communication delay is considered in the tail screening condition, so that the train tail screening result is more accurate, and train tail screening is more reasonable and safer.

The invention discloses a method and device for screening similar statements in a database. The method comprises the steps that semantic vectors and semantic vectors of multiple target extension statements of a target standard statement are utilized to expect to screen all the target extension statements to obtain extension statements to be subjected to quality inspection; Calculating the similarity between the semantic vector of each extended statement to be subjected to quality inspection and the semantic vectors of other extended statements in the database; Wherein the semantic vector is obtained through a semantic measurement model; And based on the similarity and a first preset screening condition, screening each extended statement to be subjected to quality inspection and each otherextended statement to obtain similar extended statements to be subjected to quality inspection and corresponding similar other extended statements. Therefore, only the target extension statement needing quality inspection is screened as the to-be-quality-inspected extension statement, and the number of the to-be-quality-inspected extension statements is reduced; Compared with a screening result obtained through manual screening, the automatic similar statement screening is more perfect and accurate, manpower and time are saved, and the screening efficiency is improved.

The invention discloses an active fluorescence detection method of an anthropogenic silent information regulatory factor 6 (Sirtuin6). A polypeptide containing fluorophore and quenching group (FRET (fluorescence resonance energy transfer) effect) and long-chain fatty acylation lysine residue is used as a substrate, the fluorescence intensity is associated with the enzymatic activity of Sirtuin6, and the Sirtuin6 recognition site (long-chain fatty acylation lysine) of the substrate is located in the middle of the substrate by the FRET effect, thus, the substrate (polypeptide) is close to a natural substrate of Sirtuin6, and the combination is close; more fluorophores can be selected, and reliable screening result can be obtained. The method can be applied to screening of the Sirtuin6 regulator or is used for active detection of Sirtuin6 in a biological sample, has the characteristics of miniaturization, automation, reliability, rapidness and the like, is suitable for high-reflux application, and also can be used for development of the novel Sirtuin6 active detection kit and screening of the Sirtuin6 regulator.

The invention belongs to the field of germ screening and particularly relates to a system and a method for screening a model infected with arcanobacterium pyogenes or corynebacterium pseudotuberculosis. The system comprises an elisa plate, a heater, a reagent, a database, an elisa instrument and a data comparison output module, wherein the elisa plate comprises a polystyrene / polyvinyl chloride material label plate which comprises 96 holes or 48 holes; the reagent comprises an antigen coating solution, an enzyme-labeled antibody, a developing solution and a germ infection model or immune model serum; the database generates absorbance of different antibody amounts for a healthy or infected or immunized animal model, and the absorbance can be imported and deleted; and the wavelength of the microplate reader is set to be 450 nm. The screening system provided by the invention is complete in database, accurate in screening result, capable of quickly screening out the types of the bacteria infecting the bacteria model, simple and convenient.

The invention provides a protein biomarker for sepiella japonica in the senescence process and belongs to the technical field of genetic engineering. The protein biomarker comprises a mitochondrial ATP / ADP (adenosine triphosphate / adenosine diphosphate) carrier protein SLC25A4S, has relative abundance of 1.82*10<7> before sexual maturation and oviposition, and has relative abundance of 0 during oviposition and articulo mortis after oviposition. A screening method of the protein biomarker comprises the following steps: extracting optic gland protein samples from individuals of sepiella japonicaat different reproductive stages; performing enzymolysis on the protein samples by using trypsin; analyzing the protein samples after enzymolysis by using liquid chromatogram-mass spectrum combination; and performing protein differential expression analysis, gene ontology analysis, signal pathway analysis and protein homologous cluster analysis through LC-MS (liquid chromatogram-mass spectrum) data processing. Through proteomic analysis and screening on the optic gland protein samples of the sepiella japonica at different reproductive stages, potential biomarkers can be obtained.

The invention discloses a cocoon screening device comprising a conveyor belt. A push plate and a link plate are arranged in the middle of the conveyor belt and form uniform barriers, a plurality of sheet iron are uniformly distributed on one side of the conveyor belt, a feeding plate, a perspective plate, a plurality of door plates and a cocoon pool are arranged below the conveyor belt in sequence, the upper planes of the feeding plate, the perspective plate and the door plates are positioned on a same plane, a CCD (Charge Coupled Device) camera is arranged above the perspective plate, a fluorescent lamp source is arranged below the perspective plate, the plurality of door plates form a door plate array and correspond to the barriers between each two sheet iron one to one, a gas cylinder is arranged below each door plate and is controlled by virtue of each solenoid valve, and an inferior-quality product pool is arranged below the gas cylinders. The cocoon screening device is used for automatically screening cocoons on line without damaging the cocoons, is simple to operate, and not only reduces the labor intensity of workers to a great degree, but also ensures the cocoon screening result to be more accurate and objective.

The invention relates to a feature index screening method, which comprises the following steps: obtaining a user data set, user data in the user data set comprising at least two feature indexes; at least two different pre-screening models are constructed based on the same n characteristic indexes, the at least two different pre-screening models form a pre-screening model group, and n is a natural number greater than 0; and when it is judged that the performance indexes of the pre-screening model group meet requirements, taking the n feature indexes as the screened feature indexes. The invention further relates to a satisfaction prediction model construction method and a satisfaction prediction method. The degree of satisfaction prediction model constructed by the method and the device is more universal.

The invention discloses a chemical material screening machine for chemical industry. The machine comprises a main body and a sieve plate horizontally arranged in an inner cavity of the main body, support angles are vertically arranged at four corners of the bottom wall of the main body, a feeding pipe penetrating through the top wall of the main body and extending into the inner cavity of the mainbody is welded on the top wall of the main body in the vertical direction, electric push rods and bearing plates respectively welded and fixed with two sides of the inner side wall of the main body are arranged on two sides of the sieve plate, two sides of the top wall of the inner cavity of the main body are fixedly welded with mounting blocks with openings of inner cavities facing downwards, and a material pushing plate is further arranged in the inner cavity of the main body; and a partition plate welded with the bottom wall of the inner cavity of the main body is vertically arranged in the main body, and a first discharge pipe and a second discharge pipe are respectively and fixedly welded on two sides of the bottom wall of the main body. According to the chemical material screening machine for the chemical industry, the electric push rods, the bearing plates, a support and a pulley are arranged, the electric push rods continuously stretch and retract to drive the sieve plate to continuously vibrate back and forth and enable materials on the sieve plate to continuously vibrate, and the material screening is facilitated to be more sufficient.

The invention belongs to the field of plant endophyte separation and microbial fermentation engineering, and particularly relates to a method for separating metabolizable cephalotaxus sinensis alkaloid strains. According to the method, roots, stems and leaves of perennial cephalotaxus sinensis are selected as explant; the explant is cut to strips, sterilized and then placed into a culture medium for culturing so as to produce cephalotaxus sinensis symbiotic bacteria; and then the cephalotaxus sinensis symbiotic bacteria are separated according to different strains and cultured and fermented respectively, and the cephalotaxus sinensis symbiotic bacteria are detected after fermentation broth is concentrated so as to determine whether the cephalotaxus sinensis symbiotic bacteria are metabolizable cephalotaxus sinensis alkaloid strains. In a fermentation broth preparation process, second batch of strains are inoculated after metabolic organisms are generated by the strains, the metabolic organisms generated by the previous batch of strains provide nutrients for the second batch of strains, so that growth of the second batch of strains is promoted greatly, the biological activity is improved simultaneously, a large amount of fermentation broth is generated accordingly, and the accuracy is improved while strain screening is facilitated.

The invention discloses a method for screening salt-tolerant day lily varieties based on glyoxalase activity. The method comprises the following steps: taking tender day lily leaves; putting into liquid nitrogen and crushing into fine powder; adding phosphate buffer, after oscillating and shaking up, centrifuging at low temperature, then taking the supernatant, dividing into two equal parts, one part is used for determining the protein content, the other part is used for determining the activity of glyoxalase, the activity of glyoxalase is calculated according to the consumption of the substrate methyl glyoxalase and the protein content per minute, and the plant with high glyoxalase activity is salt-tolerant. The salt-tolerant day lily variety is screened by measuring the activity of glyoxalase in vivo. Meanwhile, in order to avoid errors caused by fresh weight, the protein content in vivo is firstly measured, and the salt tolerance of the day lily is screened according to the glyoxalase activity of unit protein. Therefore, the method provided by the invention has the advantages of short period, accurate screening result, low cost and the like, and is of great significance to day lily salt resistance research and breeding.

The present invention provides a method and device for determining semantic matching degree. The method includes: acquiring the first sentence and the second sentence; dividing the first sentence and the second sentence into x and y sentence segments respectively; The word vector in each sentence segment is convolved with the word vector in each sentence segment of the second sentence to obtain a three-dimensional tensor; the adjacent vectors in the x row y column one-dimensional vectors are synthesized and / or screened , until the three-dimensional tensor is combined into a one-dimensional target vector; according to the target vector, the semantic matching degree between the first sentence and the second sentence is determined. In the embodiment of the present invention, according to the word order, the sentences to be matched are divided into sentence segments with the word vector as the unit, and the two sentence segments in the two sentences are convoluted to obtain a three-dimensional tensor, which contains each The local matching information of sentence fragments between sentences, the semantic matching result obtained based on this three-dimensional tensor is more accurate.

The invention discloses a chemical material screening machine for chemical industry, which comprises a main body and a sieve plate installed horizontally in its inner cavity, the four corners of the bottom wall of the main body are all vertically installed with support angles, The feed pipe is welded in the vertical direction through its top wall and into its inner cavity. The two sides of the sieve plate are provided with electric push rods and receiving plates that are welded and fixed to the two sides of the inner wall of the main body. The inner cavity of the main body is Both sides of the top wall are fixedly welded with mounting blocks with the opening of the inner cavity facing downward, and a pusher plate is also provided in the inner cavity of the main body; a partition plate welded to the bottom wall of the inner cavity is vertically arranged in the main body, and the main body Both sides of the bottom wall are respectively fixedly welded with a first discharge pipe and a second discharge pipe. The chemical material screening machine for chemical industry is equipped with electric push rods, receiving plates, brackets and pulleys. The electric push rods continue to expand and contract to drive the sieve plate to vibrate continuously back and forth and make the materials on the sieve plate constantly vibrate, which is conducive to making material screening more efficient. full.

The invention discloses an automatic screening apparatus and an automatic screening method for clone bacterial strains. The apparatus comprises a three-dimensional electronic control motion platform for placing a culture dish and changing a spatial position thereof, the control side of the three-dimensional electronic control motion platform is connected with corresponding control side of a central management system; and the periphery of the three-dimensional electronic control motion platform is provided with a high resolution digital camera, a binocular stereoscopic visual sensor system, a measuring characteristic optical projection system and an optical illumination system, wherein the control side of the measuring characteristic optical projection system is connected with corresponding control side of the central management system; and the control sides of the high resolution digital camera and the binocular stereoscopic visual sensor system are connected with corresponding control sides of the central management system via an image acquisition control system. The method realizes automatic screening through monitoring logarithmic phase of the growth of the clone bacterial strains. The method realizes rapid and automatic screening for the clone bacterial strains through the apparatus; the screening results are accurate; and the screened clone bacterial strains are undamaged.