27 results about "Screening duration" patented technology

The invention relates to the technical field of data processing, in particular to a journal literature recommendation method, system and equipment oriented to a specific field, and aims to solve the technical problems of single literature importance evaluation dimension, serious time interference, insufficient field pertinence and weak recommendation practicability in the prior art. The method comprises the steps of selecting periodical literatures in a specific field, achieving normalization processing of the guided frequency and the downloading frequency, introducing indexes such as funds, core periodicals, periodical influence factors, the guided frequency and the downloading frequency, calculating the importance score of a single literature, and conducting sorting according to the importance score of the literature. And selecting the literature with the specific domain value ranking the preset proportion range as the recommended literature in the domain. Through the scheme, the user is helped to quickly find important literatures in a specific field, and the literature retrieval and screening time of the user is greatly saved.

This invention discloses a PCBA (Printed Circuit Board Assembly) product screening method based on reliability requirements, comprising: assessing the early failure rate of the PCBA product; generating a reliability target value for the product based on the early failure rate and preset conditions; establishing a functional relationship between the reliability target value and the early failure rate, the stress intensity used for screening, and the screening time; and determining the optimal screening stress intensity and screening time in conjunction with the preset conditions. This method helps PCBA manufacturers to accurately determine screening results and costs; ensures that PCBA products maintain a reliable level while controlling screening costs; and helps PCBA manufacturers accurately screen products with potential failures, thereby improving product reliability and optimizing production efficiency.

The application provides a kinase inhibitor leading compound, a virtual screening method thereof and application of the kinase inhibitor leading compound in preparation of branched-chain alpha-keto acid dehydrogenase kinase inhibitors and / or drugs for treating diseases mediated by branched-chain alpha-keto acid dehydrogenase kinase. The virtual screening method provided by the application combines various virtual screening platforms to screen a large-scale compound library, improves the true positive rate of screening results, reduces the number of compounds needing experimental screening, and saves screening time and cost. In addition, the compounds I-III screened out with good binding affinity to BCKDK can be used in researches on targeting BCKDK to treat major diseases such as obesity, insulin resistance, maple syrup urine disease, neurological dysfunction, liver cancer, colorectal cancer and tumor cachexia.

The invention discloses an intelligent grading screening method for predatory mites, relates to the technical field of large-scale production and quality control of biological control natural enemy insects, and provides a concentric ring grading screening field which comprises a release ring area, a migration ring area, an approaching ring area and a predatory area, and each ring area is provided with a ring area suction surface, a negative pressure cavity and a collection channel. A thin-layer cavity is defined by the transparent cover plate and the bearing surface, a pumping outlet is formed in the center of the thin-layer cavity and communicated with the low-flow pumping assembly, and an air supply channel is arranged in the circumferential direction to maintain airflow to point to the pumping outlet; the migration ring area is provided with a volatile clue ring belt, the approaching ring area is provided with a trace clue ring belt, and the predatory area is provided with a central predatory point and can be configured with a standardized fake prey carrier to form a predatory trigger signal; and the pretreated predatory mites are synchronously released to a release ring area and are moved and gathered in a screening time window, and when the time window arrives, the low-flow pumping and draining assembly is closed, and the negative pressure cavity is synchronously opened to suck and divide flow, so that a multi-grade predatory mite grading result is obtained.

This invention provides a method for screening highly specific nucleic acid aptamers and specific *Lactobacillus helveticus* aptamers, belonging to the field of nucleic acid aptamers. Specifically, the method for screening highly specific nucleic acid aptamers provided by this invention includes the following steps: S1: A second library is obtained after N rounds of forward screening of a first library; S2: A third library is obtained after M rounds of reverse screening of the second library; S3: The third library is obtained after X rounds of forward screening of the third library to obtain selected random single-stranded oligonucleotides, which are then subjected to PCR amplification, purification, cloning, and sequencing; S4: The sequences cloned and sequenced in step S3 are used for affinity and specificity assays to select sequences with high affinity and specificity, thereby obtaining highly specific nucleic acid aptamers. The aptamers provided by this invention have the advantages of high specificity and strong affinity, and the construction method of the aptamers provided by this invention has the advantage of short screening time.

The invention relates to the technical field of data processing, in particular to an intelligent screening method, device and system for an intelligent personnel platform, and the method comprises the steps: collecting a plurality of reference resumes, extracting keywords, and building a reference resume database; obtaining an applied post and a corresponding delivery resume, and matching a reference resume of the delivery resume for the applied post through a reference resume database; counting the number of the same keywords according to the delivery resume and the corresponding reference resume, respectively determining the coincidence degree and the non-aiming degree of the job capability corresponding to the job post, obtaining the coincidence condition of the delivery resume corresponding to the job post, and visually displaying the coincidence condition; the reference resume corresponding post and the corresponding delivery resume are analyzed, the coincidence condition of the delivery resume corresponding post is determined, and all the delivery resumes are screened according to the coincidence condition, so that the coincidence condition of the delivery resumes is judged more accurately, the time for manually screening the delivery resumes is effectively shortened, meanwhile, the proper delivery resumes are reserved, and the efficiency of screening the delivery resumes is improved. And omission of excellent talents is prevented.

The present invention provides a fluorescent protein screening marker staygold‑DUF350 r The invention relates to a gene and its derivative products and applications, which belong to the field of genetic engineering technology. staygold‑DUF350 r fluorescent protein gene Staygold and genes DUF350 The codon for L-valine in the nucleotide sequence of is replaced with the second rare codon GTC, and the resulting fluorescent protein gene after codon replacement is Staygold The gene DUF350 after codon replacement is connected with a flexible protein peptide. staygold‑DUF350 r When the gene is transformed into Escherichia coli, the fluorescence intensity of the expression is positively correlated with the L-valine concentration, which can significantly improve the screening efficiency of L-valine high-yielding strains. staygold‑DUF350 r Genes can effectively save screening time and costs, and also improve screening efficiency.

This invention provides a method, apparatus, and electronic device for screening SerDes chips. The method includes: obtaining the bit error rate (BER) of the target coordinate points in the digital eye diagram corresponding to the SerDes chip based on the target coordinate points of a predetermined BER boundary contour; the BER boundary contour is predetermined based on the boundary coordinate points with a BER of zero in the digital eye diagram corresponding to a qualified SerDes chip; if a first proportion of the target coordinate points with a BER of zero is greater than a preset proportion threshold, the SerDes chip is determined to be a qualified chip. In this application, judging the SerDes chip by obtaining the BER of the target coordinate points in the digital eye diagram corresponding to the SerDes chip based on the predetermined BER boundary contour can reduce misjudgments of SerDes chips and improve the yield of SerDes chips. Furthermore, only the BER of the target coordinate points of the predetermined BER boundary contour in the digital eye diagram of the SerDes chip needs to be obtained, which shortens the screening time and improves the screening efficiency of SerDes chips compared to obtaining the complete digital eye diagram.

A seedling culture screening device for rice planting belongs to the technical field of agricultural planting, and comprises a feeding mechanism, a discharge port, a shell discharge box, a first-layer screening plate, a second-layer screening plate and a paving mechanism, the discharge port is located on one side of the bottom of the feeding mechanism, and the shell discharge box is mounted in the middle of one side of the feeding mechanism in an intercommunication manner; when the seedling culture screening device for rice planting works, the flattening mechanism moves back and forth above the first-layer screening plate through the linear motor, rice seeds stacked on the first-layer screening plate in a concentrated mode are flattened, and the situations of screening leakage and incomplete screening caused by local stacking are avoided; meanwhile, a pore pressure device drives a movable frame to rotate and move up and down through a connecting plate and a hydraulic cylinder to press and dredge rice seeds blocked in round holes in a layer of screening plate, the workload of frequent shutdown cleaning and the cleaning frequency of manual intervention due to rice seed blockage of the equipment can be reduced, the continuous screening duration of the equipment is guaranteed, and the working efficiency is improved. And the operation efficiency of equipment is improved.

The utility model discloses meal replacement powder raw material screening equipment capable of rapidly screening impurities, which belongs to the technical field of meal replacement powder raw material screening, and adopts the technical scheme that the meal replacement powder raw material screening equipment comprises a fixed seat, a vibration frame is arranged at the top of the fixed seat, and a cleaning mechanism, a screening frame and a sealing cover are arranged at the top of the vibration frame; an auxiliary mechanism is arranged at the top of the sealing cover; the cleaning mechanism comprises a fixing frame, a plurality of elastic balls, a plurality of moving grooves, a limiting plate and a fixing plate, the top of the fixing frame extends into the screening frame and is in close contact with the interior of the screening frame, and the surfaces of the elastic balls are in contact with the interiors of the moving grooves. The problems that the screening effect is affected due to the fact that the screening time is long, and the screening efficiency is reduced due to the fact that the surface of a screen is prone to being damaged by a cleaning brush when the screen is cleaned and the diameter of meshes of the screen may be increased are solved.

The embodiment of the invention provides a data fusion comparison method and system and a readable storage medium, and the method comprises the steps: firstly obtaining investment information data which belongs to the same investment information and comes from different data sources based on a preset data screening time range, guaranteeing the pertinence and comprehensiveness of data collection, and avoiding the irrelevant data interference; and then, target data is performed on the multiple groups of investment information data to focus core fusion data, multi-dimensional verification is completed in combination with a preset data comparison verification rule, and data with data errors and format deviation in the target fusion data is effectively discriminated and eliminated, so that the data quality of the fusion data is guaranteed. And finally, performing fusion processing on the data passing the verification according to a data fusion rule to form standardized data with a unified caliber, thereby solving the problems of tedious multi-source data summarization and difficulty in unified management. Meanwhile, the fused standardized data has both accuracy and practicability, and the management efficiency of the data is effectively improved.

The utility model relates to a screening device for processing an efficient desulfurizing agent, which is characterized in that a machine body is provided with a feed port, a vibration motor and a shock strut, and the screening device comprises at least two stages of stacked screening devices; the screening device comprises a screen frame, a discharging bin away from one side of the feeding port and a driving device driving the screen frame to swing in a reciprocating mode. A discharging opening is formed in the discharging bin; a guide rod extending out of the side wall of the machine body is arranged at the end, close to the discharging bin, of the screen frame; a guide hole for the guide rod to penetrate through is formed in the side wall of the machine body; the driving device comprises a hydraulic rod fixed on the outer wall of the machine body and a guide block arranged at the moving end of the hydraulic rod; a through hole for the guide rod to penetrate through is formed in the guide block; and the guide rod can horizontally slide in the through hole. The vibrating screen is reasonable in structural design, the screen cloth is divided into two parts by designing the vibrating screen frame controlled by the telescopic hydraulic rod, the sufficient screening time is guaranteed, the conveying and collecting efficiency of screened materials is guaranteed, and the screening efficiency is guaranteed.

The invention discloses an aptamer de novo design virtual screening method and system based on sugar molecules, and belongs to the field of biology. Comprising the following steps: constructing a three-dimensional structure library: constructing an initial aptamer library and a target sugar molecule library; aptamer library screening, wherein the aptamer library screening comprises initial nucleic acid aptamer molecule docking and filtering, optimized nucleic acid aptamer library construction, optimized nucleic acid aptamer molecule docking and molecular dynamics simulation multi-round filtering; and experimental verification: detecting the binding capacity of the potential nucleic acid aptamer and the sugar molecules. Compared with the prior art, the method has the advantages that the nucleic acid aptamer three-dimensional structure database can be independently constructed, and consumption of a large number of traditional wet experiments in several months is replaced; the screening process is more efficient and controllable, virtual screening of aptamers designed from the beginning of targeted sugar molecules is achieved, the accuracy is higher, and the screening time and cost are effectively reduced.

This utility model relates to the field of raw material screening technology, specifically to a raw material grading, screening, and conveying device. The device includes a screening mechanism comprising a housing with an inlet at the top and a first outlet on one side. A first support member is mounted on the inner wall of the housing. A first spring is mounted on top of the first support member. A connecting member is mounted on top of the first spring. A screen is hinged to one end of the connecting member. A vibrating motor is mounted at the bottom of the screen. A first drive mechanism for rotating the screen is mounted below the screen. A second support member is slidably mounted on the rear wall of the housing. A second spring is mounted on top of the second support member. A third support member is mounted on top of the second spring. A first electric cylinder is mounted on one side of the second support member. A fourth support member is mounted at the first outlet. This device can perform screening in a horizontal state, extending the screening time and ensuring more thorough screening of the raw materials.

The invention belongs to the technical field of cell biology, and particularly discloses a marine fish gene editing and mutant screening method which comprises the steps of sgRNA synthesis, Cas9-sgRNA RNP complex preparation, microinjection and mutant screening. The marine fish microinjection needle and the biological glue are used, so that the problem that microinjection of marine fish fertilized eggs is difficult is solved; on the basis, the mutants can be screened through PCR amplification, HRMA analysis and PAGE electrophoresis, so that the screening cost is greatly reduced; in addition, the mutant screening time is shortened from several weeks to several months to about four days, and an efficient and economical novel method is provided for marine fish gene editing and mutant screening.

The invention relates to a fluorescent protein selection marker staygold-S13 gene as well as a construction method and application thereof, and belongs to the technical field of biological engineering. The invention provides a fluorescent protein selection marker staygod-S13 gene for screening an L-arginine production strain and a construction method of a gene fragment, compared with other similar gene selection markers, the selection marker provided by the invention has the advantages that the fluorescence intensity is positively correlated with the concentration of L-arginine; according to the screening marker, the screening efficiency of the L-arginine high-yield strain can be obviously improved, the screening time and cost can be saved, the screening efficiency can be improved, and the screening marker has a wide application prospect.

The present application relates to the technical field of particle detector, specifically to a signal acquisition, processing and analysis method and system of particle detector array, comprising the following steps: channel amplitude segmentation difference ratio threshold marking stable section, calculating difference ratio screening monotone rising channel marking transition, extracting the earliest excitation channel as the starting point, searching adjacent channels screening time difference within the window as the candidate, and taking the angle change less than the threshold as the main section to generate path structure. In the present application, the amplitude difference of the extracted channel in the fixed period is screened to select the stable signal section, the signal is preliminarily structured, the rising trend channel is identified by the difference ratio, the first excitation time is extracted to establish the spatial starting point index, the path candidate is screened by combining the adjacent channel time difference and state, the direction consistent path main section is extracted by using the angle change analysis, the particle path reconstruction is realized, the recognition accuracy is improved by multi-dimensional parameter cooperation, the analysis ability is enhanced, and the misjudgment rate is reduced.

The present invention relates to a fluorescent protein screening marker staygold-levE r The invention provides a fluorescent protein screening marker staygold-levE for screening L-valine production strains. r The present invention discloses a gene and a method for constructing the gene fragment. Compared with other similar gene screening markers, the fluorescence intensity of the screening marker provided by the present invention is positively correlated with the L-valine concentration, which can significantly improve the screening efficiency of L-valine high-yielding strains. The screening marker can save screening time and cost, and can improve screening efficiency, and has broad application prospects.

The utility model discloses a fused quartz screening device which comprises a support, two guide mechanisms, a supporting mechanism, a screening tray, a crank rocker mechanism and a driving assembly, and the two guide mechanisms are obliquely arranged on the support side by side; the supporting mechanism is movably arranged on the two guide mechanisms; the sieve tray is arranged on the supporting mechanism, and a discharge port is formed in one end of the sieve tray; the crank rocker mechanism is rotationally arranged on the bracket, and the crank rocker mechanism is pivotally connected with the supporting mechanism; the driving assembly is arranged on the support and connected with the crank and rocker mechanism. Therefore, the screening efficiency can be effectively improved, the materials can be quickly dispersed and pass through the screen, the screening time required by unit yield is shortened, and the production process is more efficient and smoother.

The invention relates to the technical field of impurity removal and screening, and discloses automatic impurity removal and screening equipment for carbon black production, which comprises a screening tank, a vibration module arranged on a damping base, a plurality of impurity screening modules continuously arranged in the screening tank up and down, and a discharging module arranged on the outer side corresponding to the screening equipment and connected with a material receiving tank, a feeding module, an ion air supply module and a rotary driving module are arranged above the impurity screening module, and the impurity screening module eliminates static electricity through the ion air supply module and rotates through the rotary driving module; the screening equipment comprises a tank wall, a screen is arranged in the tank wall, a material guiding ring groove of the discharging module is formed between the screen and the tank wall, the top of the material guiding ring groove is open, the screen is rotationally arranged on the material guiding ring groove, and a spirally-arranged blocking plate is arranged on the portion, close to the outer side, of the top face of the screen. Compared with the prior art, the carbon black powder screening device has the advantages that the blocking plate is arranged on the screen, the screening time of carbon black powder can be prolonged, and automatic feeding and static electricity elimination can be achieved.

The utility model relates to the technical field of printing ink production equipment, and discloses a printing ink powder vibration screening device which comprises a screening box, a multi-stage screen drum is connected between a plurality of guide wheels in a rolling mode, a plurality of filtering holes are formed in the outer wall of the multi-stage screen drum, a spiral plate is fixedly connected to the inner wall of the multi-stage screen drum, and a plurality of material stirring plates are further fixedly connected to the inner wall of the multi-stage screen drum. According to the printing ink powder screening device, the vibration motor drives the screening box to vibrate, so that printing ink powder can fully jump and roll in the multi-stage screening drum, the servo motor drives the driving wheel to rotate so as to drive the multi-stage screening drum to rotate, and when the spiral plate and the stirring plate in the multi-stage screening drum rotate, the powder can be stirred and stirred and conveyed at a constant speed; compared with a traditional screening mode depending on natural falling or simple shaking, the powder screening device has the advantages that the screening speed is greatly increased, the screening time of a single batch of printing ink powder is effectively shortened, and therefore the overall production efficiency is improved.

The invention discloses a fault injection test case screening method and device based on fault detectability analysis, and aims to solve the problems of blindness and low efficiency of existing screening. The method comprises the steps of firstly defining a fault injection range and generating a full-quantity fault set, extracting a dynamic behavior portrait of a test case through fault-free gate-level logic simulation, and identifying a static region register set; performing structure detectability analysis on the full-amount fault set under unconstrained and static region conversion structure constraints respectively; quantifying irreplaceability of the test case to fault detection through differential analysis, and fusing a multi-dimensional coverage rate index and time cost to obtain a sorting score; and finally, screening out an optimal test case subset through a greedy algorithm by using a combinatorial optimization model with budget constraint. According to the method, a large amount of fault injection simulation is not needed, the screening time is remarkably shortened, the fault coverage rate is improved, the computing resource overhead is reduced, and the method is suitable for functional security verification of a high-reliability chip.

The application relates to a particle screening method, device and equipment in cryo-EM imaging and a storage medium, wherein the method comprises the following steps: dividing a protein reconstruction final particle data set into a half data set based on a division strategy in cryo-EM three-dimensional reconstruction; performing three-dimensional reconstruction on all particles in each half data set respectively to obtain a first protein density map and a second protein density map, so as to screen all particles in the corresponding half data set and obtain particles meeting preset conditions; performing iteration on the three-dimensional reconstruction and particle screening until a preset iteration number is reached, and obtaining different round first protein density maps and second protein density maps and resolutions thereof, and then determining an optimal screening ratio of the final particle data set. Therefore, the problems that the existing particle screening technology is too dependent on screening criteria established by people, the screening time is relatively long, the screening algorithm accuracy is relatively low, and it is difficult to quickly and effectively screen a large number of low signal-to-noise ratio particles and the like are solved.

The intelligent sorting machine for fruit tree fruit sorting comprises a screening plate, the side wall of the screening plate is fixedly connected with a plurality of guide columns, an abutting groove is formed in each guide column, the side wall of each abutting groove is provided with a rotating groove and a mounting groove, the upper surface of each mounting groove is fixedly connected with a screening motor, and the upper surface of each screening motor is fixedly connected with a rotating shaft. And the output end of the screening motor is fixedly connected with a first rotating column, the first rotating column is located in the rotating groove, and the upper surface of the first rotating column is fixedly connected with a turning column. The angle of each guide column can be independently controlled, so that a plurality of fruits can be screened and transferred in parallel, and the overall screening time is greatly shortened. Compared with traditional equipment with a single screening channel, the multi-guide-column structure can remarkably improve the fruit screening number in unit time, rotation of the turning columns in the abutting grooves is a stable movement mode, and violent impact and collision on fruits can be avoided.

The invention discloses a rapid micro-plastic detection method and system based on a spectral analysis technology, and the method comprises the steps: achieving the efficient separation and concentration of a sample through the development of vacuum filtration and density gradient centrifugation means; meanwhile, an automatic sample treatment system is constructed, and automatic equipment integrating filtering, digestion and separation steps is adopted, so that the time consumed by manual operation is reduced; besides, based on a rapid screening technology of Nile red fluorescent staining, through specific fluorescence labeling of hydrophobic micro-plastics, the micro-plastics are rapidly positioned by using a fluorescence microscope, so that the manual screening time is shortened, and the detection efficiency is improved.

The utility model relates to the technical field of steel fiber reinforced castable production and screening, in particular to a steel fiber reinforced castable production and screening device which is provided with a screening mechanism and a rotating mechanism, so that in the steel fiber reinforced castable production and screening process, flying dust can be inhibited, the screening effect is improved, and the production efficiency is improved. The screening time is shortened, and the processing efficiency is improved; comprising a screening mechanism; the device further comprises a limiting mechanism, a supporting mechanism, a sealing mechanism and a rotating mechanism, the supporting mechanism is installed at the upper end of the limiting mechanism, the sealing mechanism is installed on the limiting mechanism, the screening mechanism is installed in the sealing mechanism, and the rotating mechanism is installed on the screening mechanism; the limiting mechanism is used for limiting, the supporting mechanism is used for supporting, the sealing mechanism is used for sealing, the screening mechanism is used for screening, and the rotating mechanism is used for rotating.

The present application relates to the technical field of data processing, in particular to an intelligent screening method, device and system for an intelligent personnel platform, the method comprising: collecting a plurality of reference resumes and extracting keywords, establishing a reference resume database; obtaining a job position and a corresponding delivery resume, matching the reference resume of the delivery resume with the reference resume database for the job position; counting the number of same keywords according to the delivery resume and the corresponding reference resume, respectively determining the compliance degree and the non-target degree of the work ability to the job position, obtaining the compliance of the delivery resume to the job position, and visualizing the display; based on the reference resume, analyzing the job position and the corresponding delivery resume, determining the compliance of the delivery resume to the job position, screening all the delivery resumes through the compliance, making the compliance judgment of the delivery resume more accurate, effectively reducing the screening time of the delivery resume by manual, retaining suitable delivery resumes, and preventing the omission of excellent talents.