59results about How to "Comprehensive screening" patented technology

The invention provides a qualitative and quantitative detection method of residual solvent in medicine through adopting a multi-channel parallel chromatographic column system in gas chromatography (GC), wherein, a double-channel or triple-channel shunt tube is arranged behind a gas chromatograph sampling system and in front of a chromatographic column; moreover, a chromatographic column of opposite polarity is connected in parallel behind the shunt tube, or a mass spectrum analysis system is connected with the shunt tube; in addition, each channel has an independent switch to control the switching on / off of the channel. According to the comparison and analysis of the detection result of the samples inside all channels, the method can complete the qualitative and quantitative analysis of the same sample at a time along with higher efficiency and accuracy.

The invention relates to a screening method of a volatile organic compound in a cigarette filter tip blasting-bead. The method comprises the steps of (1) performing headspace sampling on liquid in the blasting-bead, and combining a combined comprehensive two-dimensional gas chromatography mass spectrometry for carrying out full-scanning analysis on a sample to obtain a full-scanning spectroscopy; (2) automatically comparing chromatographic peaks of the full-scanning spectroscopy and database information through data software to obtain a preliminary qualitative result of each spot; (3) checking the preliminary qualitative result of each spot, combing a peak structure and similarity proportion, optimizing the full-scanning spectroscopy to obtain an optimal spectroscopy, and manually comparing with the database information to obtain an optimal qualitative result; (4) using percentage response for carrying out semi-quantitative analysis on the optimal qualitative result. The method has the advantages of short detection time, simplicity and convenience in operation, high sensitivity, comprehensiveness in screening, and the like, not only can be used for monitoring conventional harmful volatile organic compounds, but also can be used for monitoring if flavor components allowed to be added exceed the limitation or not so as to ensure the safety of blasting-bead products.

The invention provides a tobacco ordering abnormity tracking system and method. The system comprises an ordering client, an order reading module, a past effective order storage module, an order comparison module, a screening mode selection module, an abnormal order confirming module, and a tobacco detachment machine connected with the abnormal order confirming module and detaching inventory tobacco into tobacco cartons. A tobacco boxing machine is connected with the tobacco detachment machine, a box sealing machine is connected with the tobacco boxing machine, a code printing and scanning device is connected with the box sealing machine, a photographing and order number input device is connected with an order number and address module, and the order number and address storage module is connected with the abnormal order confirming module. An order number and address comparison module is connected with the order number and address storage module and an order number and address reading module. The abnormal order storage module is connected with the order number and address comparison module. The method implemented according to the system has a real-time warning function, it can be effectively guaranteed that tobacco enterprises monitor flow direction of tobacco, and the tobacco market order is maintained.

The invention discloses a semantic-based candidate answer screening method and system for machine reading understanding. The method comprises the following steps of screening out the candidate answerfragments corresponding to a document from the document according to answers; screening out the optimal candidate answer segment from the candidate answer segments according to the semantic similarityand the answers; and obtaining a candidate answer document from the document according to the semantic similarity and the answers, and calculating to obtain the position information of the optimal candidate answer segment in the candidate answer documents, wherein the candidate answer document and the position information are the input values at a machine reading understanding model training stage. According to the present invention, the answers are screened according to the semantic similarity, screening is more comprehensive, the correct answers are not easy to miss, and the higher accuracyis achieved. The semantic-based candidate answer screening method and system for machine reading understanding can be widely applied to the field of natural language processing.

The invention belongs to the technical field of testing on the adhesion performance between an adhesive material and biological tissue in vitro and in particular relates to a biological tissue simulating object in the performance test and a preparation method thereof. The biological tissue simulating object comprises gelatin, an adhesion regulator and water, the moisture content of the biological tissue simulating object is 5%-40% and the weight of the adhesion regulator is 0-50% of that of the gelatin. The preparation method comprises the following steps: determining components and ratios, compounding and drying to form a membrane. The biological tissue simulating object provided by the invention is used as an adhered matrix, a simple and reliable vertical adhesion test device is constructed through a lever of a physical balance, and the problems that biological tissue is difficult to obtain, inconvenient to store, different in fresh degree, relatively tedious in treatment process and poor in test stability are overcome; therefore, the biological tissue simulating object for testing the adhesion performance in vitro is constructed, so that the screening and testing of an adhesion material is perfect.

The invention discloses a matching method and device, a computer device and a storage medium, and the method comprises the steps of obtaining the attribute information of a user, the attribute information comprising the necessary attribute information and the auxiliary attribute information; inquiring a supplier database, wherein the supplier database comprises the basic service tags and the tendency service tags of all suppliers; screening the suppliers corresponding to the basic service tags matched with the necessary attribute information in the supplier database as the pre-selected suppliers; calculating a total matching score of the pre-selected supplier based on the auxiliary attribute information and the tendency service tag of the pre-selected supplier; and generating a target recommendation object based on the total matching score, and generating a recommendation list. According to the technical scheme, the rapid, accurate and comprehensive matching information can be providedfor the user and the supplier by adopting the matching method, and a large amount of time and effort are saved for the user and the supplier to mutually select the appropriate objects, so that the order matching efficiency of the internet platform is effectively improved.

The invention discloses efficient wheat meal screening equipment for food processing, and belongs to the technical field of food processing. In order to solve the technical problems, the invention provides efficient wheat meal screening equipment for food processing, and the efficient wheat meal screening equipment is good in screening effect, is high in screening speed, and saves time and labor.The top of a bottom plate is sequentially equipped with a bracket, a drive device and a collecting frame from left to right; the middle part of the right side surface of the bracket is connected witha cross plate in a bolt connecting mode; the right side surface of the cross plate is equipped with a blocking hopper in the bolt connecting mode; the middle part of the blocking hopper is equipped with a screening device; and a screening part of the screening device is positioned in the blocking hopper. The efficient wheat meal screening equipment is driven by a first motor, so that a screening frame moves left and right for screening wheat meal, and therefore, the effects of being good in screening effect, being high in screening speed and being time-saving and labor-saving are achieved.

The invention relates to screening equipment, in particular to secondary screening equipment for producing petroleum asphalt. The secondary screening equipment is high in screening efficiency, relatively uniform in screening and capable of achieving comprehensive collection during screening. The secondary screening equipment for producing the petroleum asphalt comprises a bottom plate, a left support, a right support, a collection box, a shaking mechanism, a moving mechanism and the like. The left support is arranged on the left side of the top of the bottom plate, the right support is arranged on the right side of the top of the bottom plate, the shaking mechanism is arranged on the upper portion of the left support, and the moving mechanism is arranged on the right side of the left support and the left side of the right support. A first filter net is connected to the upper portion of the moving mechanism. According to the secondary screening equipment, the shaking mechanism is used as the main power source to drive the moving mechanism to move up and down, so that the first filter net and a second filter net are driven to move up and down, the petroleum asphalt is prevented frombeing accumulated on the first filter net and the second filter net, the screening speed is increased, and the effect of the high screening efficiency is achieved.

The invention relates to screening equipment, in particular to screening equipment for melon seed processing and aims at achieving the technical purpose of providing the screening equipment which is used for melon seed processing and is easy to operate and comprehensive in screening. To achieve the technical purpose, the screening equipment for melon seed processing is provided and comprises an installation frame and the like. A net frame is arranged on the left side of the inner bottom of the installation frame, the top of the left wall of the net frame is rotationally connected with a net cover through hinges, a pull ring is arranged on the right side of the top of the net cover, a first spring is connected between the left side of the bottom of the net cover and the upper portion of the inner left wall of the net frame, a blowing device is arranged on the upper portion of the inner right wall of the installation frame, and a lifting device is arranged on the lower portion of the right side of the installation frame. According to the screening equipment, the lifting device drives a lifting plate and melon seeds on the lifting plate to move up and down, meanwhile, the blowing device screens the melon seeds which move up and down, and the effect that screening is comprehensive is achieved.

The invention relates to a method for screening a lactobacillus plantarum ST-III salt-tolerance gene. The method adopts lactobacillus plantarum ST-III as a material, a ribonucleic acid (RNA)-sequence (seq) technology is applied to carry out transcriptome sequencing analysis, the lactobacillus plantarum ST-III salt-tolerance gene is screened quickly and comprehensively, and the method has an important guiding significance for lactobacillus plantarum ST-III salt-tolerance mechanisms, probiotic performance and product development.

The invention discloses a non-target biomarker high-throughput screening method based on pollutant metabolism disturbance, and belongs to the field of environmental exposure and health, and the methodcomprises the following steps: (1) extracting to obtain a to-be-detected extracting solution; (2) performing chromatographic analysis to obtain a spectrogram containing chromatographic peaks; (3) identifying and labeling pollutant characteristic peaks, taking chromatographic peaks except the pollutant characteristic peaks as potential metabolite characteristic peaks, and carrying out non-target labeling on the potential metabolite characteristic peaks; (4) establishing a linear regression model by taking the peak area of the potential metabolite characteristic peak as a dependent variable andthe peak area of the pollutant characteristic peak as an independent variable; (5) operating the model, carrying out non-target screening on the biomarkers, and preliminarily obtaining related biomarkers; and (6) identifying the preliminarily obtained primary and secondary spectrograms of the biomarker, and identifying the biomarker related to pollutant exposure. According to the method disclosedby the invention, the accuracy of biomarker screening is remarkably improved, and meanwhile, the flux of biomarker screening is improved.

The invention relates to an electric power project screening method and device, a computer device and a storage medium. The method comprises: the computer device evaluating electric power project information according to a preset risk screening index, and obtaining a risk value of an electric power project; determining whether to evaluate the electric power project information according to the enterprise development screening index or not according to a comparison result of the risk value and a preset risk threshold value, and / or determining whether to evaluate the electric power project information according to the financial screening index so as to obtain a calculation result; and finally, screening the electric power project according to the calculation result. Due to the fact that thecomputer equipment evaluates the electric power project information according to the risk screening index, the enterprise development screening index and / or the financial screening index, the electricpower projects can be screened from the three dimensions of the project risk, the development characteristic and the revenue characteristic, and the implementation value of the overseas electric power projects can be more comprehensively evaluated.

The invention relates to the technical field of steel slag powder bulk containers, in particular to a semi-finished steel slag powder bulk container which comprises a box body, a screening mechanism for screening semi-finished steel slag powder is installed on the box body, and a material blocking mechanism for blocking the semi-finished steel slag powder is installed on the screening mechanism. A collecting mechanism for storing large-particle semi-finished steel slag powder is installed on the side wall of the box body, a discharging mechanism for taking out small semi-finished steel slag powder is arranged on the box body, and a walking mechanism facilitating walking and carrying of the whole structure is installed at the bottom of the box body. A pressing mechanism for braking the walking mechanism is mounted on the box body; when an operator recycles semi-finished steel slag powder, the steel slag powder is placed on the screening mechanism, the operator pushes and pulls the screening mechanism in a reciprocating mode to screen the steel slag powder, the steel slag powder of different particles is collected through the box body and the collecting mechanism, the steel slag powder does not need to be taken out of the box body to be screened after being contained, and operation is easy.

The invention relates to a rapid screening and classifying device for chemical fertilizer production. The rapid screening and classifying device comprises a main body, a circular ring, a first screen,a pasting plate and a sliding rail, wherein an inlet is formed in the left side of the main body, a screening box is installed inside the inlet, a separation cylinder is arranged inside the screeningbox, and the separation cylinder is movably connected with the screening box; an outlet is formed in the outer surface of the separation cylinder, a motor is connected to the right side of the separation cylinder, and the motor and the separation cylinder are fastened through nuts; and a fixing plate is tightly attached to the lower part of the motor, welding connection is formed between the fixing plate and the main body, a first spring is connected below the fixing plate, and the circular ring penetrates through the outer wall of the inlet. According to the rapid screening and classifying device for chemical fertilizer production, a vibrating machine is arranged, the vibrating machine drives a second screen to vibrate through a vibrating belt so that chemical fertilizer falling from thefirst screen can fall into the classifying device more rapidly, the classification is more rapid, and the classification efficiency is improved.

The invention discloses a hidden danger accident early warning method based on a block chain. The hidden danger accident early warning method comprises the steps of 1, establishing a block chain system based on a P2P consensus network and taking an information loading flow end as a node; 2, collecting cause and effect of an accident, and loading an induction reason, a result and a corresponding relationship of the accident into the block chain system through each node in a keyword data mode; step 3, collecting field monitoring data and converting a monitoring result into a monitoring fact keyword in a datamation processing form; step 4, loading the monitored fact keywords into the blockchain system and performing fuzzy comparison with keywords of accident induction reasons stored in the blockchain system, and if the similarity is higher than 70%, determining that the keywords are hidden dangers and performing early warning. The method has the effects of facilitating on-site hidden danger early warning and improving the construction safety.

The embodiment of the invention discloses a visual inspection device. The visual inspection device comprises a main body, a visual inspection module and a workpiece grabbing mechanism, the visual detection module is arranged on the main body; the visual detection module comprises a first detection unit, a second detection unit and a third detection unit; the first detection unit is used for carrying out appearance detection on the top wall of a to-be-detected product, the second detection unit is used for carrying out appearance detection on the bottom wall of the to-be-detected product, and the third detection unit is used for carrying out appearance detection on the side wall between the top wall and the bottom wall of the to-be-detected product; and the workpiece grabbing mechanism is used for grabbing the to-be-detected product and moving among the first detection unit, the second detection unit and the third detection unit. One technical effect of the embodiment of the invention is that the structural design is reasonable, the whole appearance of the to-be-detected product can be accurately detected through the three detection units, the detection precision is high, and the application range is wide.

The invention discloses a Raid slow disk screening method, which comprises the steps of testing a to-be-tested Raid to obtain a target test result; analyzing the target test result to obtain a targetanalysis result; wherein the target analysis result comprises IOPS, bandwidth and maximum response delay of the Raid to be tested in a test state; comparing the target analysis result with a preset standard to screen out a slow disk of the Raid to be tested; wherein the preset standard is a standard set for IOPS, bandwidth and maximum response delay of the Raid to be tested in advance. Obviously,through the method provided by the invention, the to-be-tested Raid can be analyzed and screened more comprehensively, so that the accuracy of a screening result in the process of screening the slow disks in the to-be-tested Raid can be further improved. Correspondingly, the Raid slow disk screening device, the Raid slow disk screening equipment and the medium provided by the invention also have the above beneficial effects.

The invention discloses an anti-Alzheimer's disease drug screening method based on behavior and biochemical indicators and a drug screened by the method. The screening method comprises the steps that a zebra fish juvenile fish Alzheimer's disease model is built, the maximum safe concentration of a drug to be screened is determined, and experimental treatment is conducted on zebra fish juvenile fish; the method also includes screening an anti-Alzheimer's disease drug by utilizing behavioral and biochemical indexes; and judging whether the medicine has the Alzheimer's disease resistance or not. According to the anti-Alzheimer's disease drug screening method based on behavior and biochemical indicators, the anti-Alzheimer's disease drug can be systematically and completely screened, especially, new drugs with uncertain efficacy are screened; compared with the prior art, medicine soaking and testing environments are simpler and only need to be carried out in the experimental pore plate, multiple fishes can be soaked in medicine in one pore during medicine soaking, the behavior ability of 48 fishes can be tested at most at the same time during testing, the operation process is simple and easy to operate, the testing workload is greatly reduced, and testing system errors are reduced.

The invention is applicable to the technical field of bearing composite fault separation, and provides a rolling bearing composite fault determining method and a terminal device. The method comprisessteps: a vibration signal of the rolling bearing and a deconvolution period of a different fault are acquired; the vibration signal is subjected to deconvolution processing according to the deconvolution period of a different fault to obtain a deconvolution signal; the deconvolution signal is subjected to Teager kurtosis spectrum analysis, a fault characteristic frequency of the rolling bearing isextracted, the composite fault type of the rolling bearing is determined, a single fault source signal in a mixed signal can be separated and extracted clearly and accurately, hidden weak feature information is effectively amplified and extracted, and thus, the rolling bearing state can be distinguished comprehensively and accurately.

The invention belongs to the technical field of coal mine devices, and particularly relates to a coal briquette crushing and screening machine for coal dressing. The coal briquette crushing and screening machine comprises a coal briquette crushing mechanism, a coal briquette screening mechanism and a control system; the coal briquette crushing mechanism is used for crushing coal briquettes, and the coal briquette screening mechanism is used for screening the crushed coal briquettes in size; the coal briquette crushing mechanism comprises a first crushing mechanism and a second crushing mechanism which are arranged in a mirroring manner, and connecting pieces for connecting the first crushing mechanism and the second crushing mechanism are arranged on the upper portions of the first crushing mechanism and the second crushing mechanism in a mirroring manner; and adjusting pieces for adjusting the distance between the first crushing mechanism and the second crushing mechanism are arranged on the lower portions of the first crushing mechanism and the second crushing mechanism in a mirroring manner. According to the technical scheme, the problems that a coal briquette crushing device is single in crushing specification, and a coal briquette screening device is incomplete in coal briquette screening specification, so that the coal briquettes need to be further treated in the subsequent using process are solved.

The invention discloses a multistage material screening mortar stirring device which comprises a supporting stirring installation module and a multistage screening feeding module. The supporting stirring installation module comprises a supporting installation plate. Supporting installation pillars are symmetrically arranged at the left end and the right end of the lower side of the supporting installation plate. A stirring installation cylinder is horizontally arranged at the upper end of the supporting installation plate. A stirring transmission structure is arranged at the right end of the stirring installation cylinder. The stirring transmission structure comprises a transmission installation frame. The middle position of the left end of the transmission installation frame is matched with the right end of the stirring installation cylinder and is horizontally provided with a stirring transmission pillar through a bearing bush. The left end of the stirring transmission pillar penetrates the stirring installation cylinder leftwards, is matched with the inner wall of the stirring installation cylinder and is provided with multiple rotary stirring structures at equal intervals. Therotary stirring structures include stirring pillars which are arranged on the stirring transmission pillar with equal angles. The multistage material screening mortar stirring device has the beneficial effects that the structural design is complete, the screening process is comprehensive, the mortar quality is uniform, transmission is stable, and the stirring efficiency is high.

The invention belongs to the technical field of application of protein tyrosine kinase (PTKs), and relates to a variant SH2 structural domain having high affinity with tyrosine-containing phosphorylation modification peptide. The invention provides the variant SH2 structural domain having high affinity with the tyrosine-containing phosphorylation modification peptide. The variant SH2 structural domain comprises amino acid sequences selected from SEQ ID NOs: 3, 4, 5 or 6. According to the invention, a residue is used for substituting a pTyr-binding region which is introduced into an SH2 domain,and a favorable substitution for enhanced binding affinity for a pTyr-containing peptide is set forth. Different substitution combinations exhibit different degrees of impact on affinity enhancement.The variant SH2 structural domain shows that the strength of the variant SH2 structural domain is much higher than that of a wild type SH2 structural domain in in-vitro binding analysis of pTyr-containing protein.

The invention discloses a small sample rolling bearing fault diagnosis method under multiple working conditions. The method comprises the following steps: a, constructing a task set; b, inputting data in the task set into ISDAE for reconstruction to obtain a reconstructed signal matrix which retains effective characteristics in original signals and reduces noise; c, classifying the reconstructed signals by using the MAML, and training model parameters of the MAML to obtain an optimal network model; and d, inputting an original vibration signal of the monitored rolling bearing into the trained MAML model, and judging whether the rolling bearing has a fault or not and the type of the fault. According to the method, the bearing fault is diagnosed by adopting a method of combining model independence and improved sparse noise reduction self-coding, not only can the separable characteristics in the original vibration signal be extracted and the anti-noise capability of the signal be improved, but also the generalization capability of the model can be improved, so that the bearing fault of small sample data under multiple working conditions can be accurately diagnosed, and the fault diagnosis accuracy is improved. And safe operation of mechanical equipment is ensured.

The invention discloses a system and method for pushing global information in real time based on a micro platform, and relates to the technical field of information analysis, processing and pushing.The system comprises a micro platform for whole-region information annalists and pushing; an enterprise terminal used for receiving the information pushed by the micro platform; wherein the enterprise terminal is also used for inputting keyword information of the wanted global information to the micro platform; and internet used for providing network files for the micro platform. The invention is scientific, reasonable and safe and convenient to use, and by comparing and analyzing the internet public files and the enterprise keywords, on one hand, the enterprise is assisted to classify and screen network information pools, and accurate positioning is conducted on acquisition of external information of the enterprise; on the other hand, beneficial benchmarking information can be obtained for an enterprise in real time, repeated implantation of a certain piece of information by the enterprise is avoided, and benchmarking and difference finding effects are indirectly achieved; finally, information source support can be provided for the enterprise from other aspects, and a way is laid for subsequent development of the enterprise.

The invention discloses a matching method, device, computer equipment and storage medium. The method includes: obtaining user attribute information, the attribute information includes necessary attribute information and auxiliary attribute information; querying a supplier database, the supplier database includes all suppliers Basic service tags and preferred service tags; Screen the suppliers corresponding to the basic service tags that match the necessary attribute information in the supplier database as pre-selected suppliers; Calculate the pre-selected suppliers based on the auxiliary attribute information and the preferred service tags of the pre-selected suppliers The total matching score; based on the total matching score, target recommendation objects are generated, and a recommendation list is generated. The technical scheme of the present invention can provide users and suppliers with fast, accurate and comprehensive matching information by adopting the matching method, saving a lot of time and energy for users and suppliers to choose suitable objects from each other, thereby effectively improving the Internet platform. Order matching efficiency.

The invention discloses the application of EBS1 gene in enhancing Arabidopsis thaliana resistance to bicarbonate stress. The nucleotide sequence of the protein coding region of the EBS1 gene is shown in SEQ ID No.1. The present invention identifies and screens a gene EBS1 resistant to bicarbonate stress, and provides a new application of EBS1 as a positive regulator in regulating Arabidopsis bicarbonate resistance and improving planting in saline-alkali land, for the cultivation of bicarbonate-tolerant plants Provide evidence.

The invention discloses a method for screening reference genes related to regulation and control of poplar stress resistance gene expression. The method comprises the following steps: selecting gene chips with serial numbers of GSE13990, GSE15242, gene chip GSE21171 and GSE23637, performing normalization processing on probes in the gene chips to obtain candidate reference genes, then performing function prediction by using InterproScan software, and selecting related genes for maintaining basic life functions of poplars as the reference genes. By virtue of the screening method, new reference genes beyond those reported in the prior art can be obtained, thereby enriching the selection of the reference genes of poplars, providing a way for screening more stable and ideal reference genes, having significant importance for the researches on the expression level of the poplar stress resistance genes and systematic researches on the stress resistance of the poplars, and having important guidance for further breeding plants with excellent stress resistance.

The invention discloses a manufacturing method of educational resources. A server is included, a resource recording system and a transmission module are arranged in the server, the resource recordingsystem is respectively connected with a resource uploading system and a search engine, the transmission module is in communication connection with the resource uploading system, the search engine andthe resource uploading system are both connected with a screening system, and the screening system is connected with an auditing system. The screening system is internally provided with sensitive wordscreening, source link screening and video content screening, so that files can be detected and screened from three aspects, the source, the safety, the content authority and the content normality ofthe files are ensured, screening is more comprehensive, invalid files or low-value files in the files can be effectively filtered out, the screened files can be audited and screened again through theauditing system, the accuracy and authority of file content are guaranteed, and learners are prevented from making contact with low-value learning materials.