1097 results about "Primary screening" patented technology

The invention discloses a method for locating a vehicle license plate in complex background. The method comprises the following steps: (1). Differentiating a gray scale mean of a fixed-size region and extracting a vehicle body image from a video; (2). preprocessing the vehicle body image such as gradation, gradient information enhancing, binarization and the like; (3). performing mathematical morphology operation on the processed vehicle body image, and performing primary screening by combining structural features of the vehicle license plate to obtain a plurality of candidate vehicle license plate regions; (4). converting the obtained candidate vehicle license plate regions into an HSV color spatial image; (5). adopting a BP neural network to perform color identification on the HSV color spatial candidate vehicle license plate image, and performing color edge detection by computing the mean color distance between two adjacent regions of a certain pixel; (6). judging edge color pair of an edge point, and eliminating the false vehicle license plate edge; and (7). performing final vehicle license plate location by the texture feature of the vehicle license plate. The method is suitable for complex background, and has higher location accuracy rate and higher robustness.

The invention provides a 3D human face quick identity authentication method and apparatus. The method comprises the following steps of S1, obtaining a depth image and a two-dimensional image comprising a current user face; S2, obtaining the depth image and the two-dimensional image of the current user face; S3, performing identity authentication primary screening on the current user face to obtaincandidate reference data sets; S4, extracting feature information of the current user face, and determining a pose orientation vector of the current user face; and S5, performing identity authentication. The functions of input, detection, identification and the like of a face identity are realized by utilizing the depth image and the two-dimensional image, and the primary screening of the reference data sets is performed in combination with the depth image and the two-dimensional image, so that the identification efficiency is improved, the influence of an external complex environment is avoided, and absolute front face of a user is not required.

The invention provides a dense crowd security and protection monitoring management method based on artificial intelligence dynamic monitoring. The method comprises the following steps: screening and marking sensitive personnel based on dynamic face recognition at an entrance and an exit, Wherein the face recognition comprises rapid primary screening and accurate secondary screening; And if necessary, using the unmanned aerial vehicle monitoring system to assist in performing face tracking monitoring; performing Crowd density dynamic monitoring based on video analysis, Wherein the dynamic crowddensity is calculated by adopting a direction gradient histogram human body detection algorithm; Detecting and warning group abnormal behaviors of the dense crowd under video monitoring; And performing the unmanned aerial vehicle assisting monitoring in the video monitoring blind area. According to the method, a key monitoring area and comprehensive dynamic monitoring are combined, flow monitoring of an unmanned aerial vehicle system is assisted, and full monitoring coverage of dense crowd occasions is achieved.

The invention discloses an urban garbage and sludge resource comprehensive utilization system. Urban garbage is fed into garbage feeding/sorting equipment (1) and, after primary sorting, primary rough crushing and primary screening, is divided into two parts: oversize materials and undersize materials. The oversize materials include paper and paper plastic composite materials left after air separation and secondary sorting and plastic, wherein the paper and paper plastic composite materials are fed into paper pump recovery equipment (2) to recover high-quality paper pulp; the waste plastic is fed into waste plastic oil producing equipment (3) for recovering fuel oil by low-temperature catalytic pyrolysis, and the slag (active carbon powder) is used in waste gas purification equipment (50) directly. The undersize materials include inorganic materials and organic materials, which are separated by secondary screening by a vibrating screen, wherein the inorganic materials are fed into a baking-free brick production equipment (6), dried, crushed and added with ingredients such as coagulator to produce baking-free bricks; and the organic materials are mixed with sludge from sludge feeding equipment (4) in a ratio and then fed into organic fertilizer production equipment (5) for producing organic fertilizers by special processes such as high-temperature high-pressure degradation and microbial fermentation.

The invention discloses a smashing and screening device for compound fertilizer production. The smashing and screening device for compound fertilizer production comprises a base, a smashing tank, a bearing, a primary screening tank, a secondary screening tank, a second drive motor and a special-shaped gear, wherein the smashing tank is fixedly installed on the base through screws; two sets of mainsmashing rollers are installed in a smashing cavity in a bilateral symmetry mode; auxiliary smashing rollers are further rotationally installed in the smashing cavity; a scattering disc is further fixedly connected to the upper end of an output shaft of a first drive motor; the second drive motor is further fixedly installed on the outer wall of the right side of the smashing tank; and the special-shaped gear is further installed on an output shaft of the second drive motor. According to the smashing and screening device for compound fertilizer production, the structure is novel, and fertilizer particles are more uniform in the smashing process; and through arrangement of the scattering disc, smashed fertilizer is evenly tossed out and then falls into the primary screening tank, so that the fertilizer on the primary screening tank is evenly distributed and prevented from being accumulated on a screen of the primary screening tank.

The invention discloses a potassium feldspar powder production and preparation method, and belongs to machining technologies of potassium feldspar powder. The method comprises the steps of ore washing treatment, preliminary screening treatment, crushing treatment, primary ball milling treatment, primary screening treatment, primary cyclone treatment, primary magnetic separation treatment, secondary ball milling treatment, secondary screening treatment, secondary cyclone treatment, secondary magnetic separation treatment, third cyclone treatment and thickening and dehydration treatment, and potassium feldspar mineral powder with the moisture content being lower than 16% and the brightness being higher than 60% is obtained.

The invention discloses a gear driven vibrating activated carbon grinding screening device. The device consists of a pedestal, a grinding box, a first driving motor, a ball screw, a grinding groove, aprimary screening box and a secondary screening box. The grinding box is arranged above the pedestal, the primary screening box and the secondary screening box are respectively installed on a first slide bar and a second slide bar, the right end of the first slide bar is fixedly connected to a first rack, and the right end of the second slide bar is also fixedly connected to a second rack, and the output shaft of a second driving motor is equipped with a special-shaped rotating wheel. The device provided by the invention utilizes the rotation of the second driving motor to realize left and right swinging of the primary screening box and the secondary screening box at the same time, and the left and right swinging of the primary screening box and the secondary screening box can increase the screening speed, also through multi-dimensional vibration, the activated carbon screening speed is greatly enhanced, at the same time sieve mesh blocking by activated carbon particles can be avoided, and the working efficiency is improved.

The invention discloses a production method of recycled aggregates of building wastes. The method comprises the following steps: (a) pre-screening; (b) impurity removal; (c) primary crushing; (d) primary screening; (e) secondary crushing; (f) secondary screening; (g) material division; (h) mixing of the recycled aggregates; (I) homogenization and entrance into warehouse. According to the production method of the recycled aggregates of the building wastes, based on a series of treatment processes, the building wastes are manufactured into engineering dinas (also named as aggregates), so that the problems of land occupation and environment pollution caused by stacking the building wastes are solved, a large quantity of dinas for building engineering can also be provided, and the method is energy-saving and environmentally friendly; meanwhile, the problems of energy sources and environment caused in a manual dinas exploitation process also can be solved. The recycled aggregates produced by using the production method is stable in performance, and can be widely applied to construction of various kinds of building engineering and road engineering.

The invention discloses a global feature and local feature-based cross-lens target retrieval system and method. The method comprises the steps of obtaining a foreground target image from a monitoring video; preprocessing the foreground target image, and extracting a color feature, a texture feature and the like with a plurality of feature dimensions from the image; and after dimension reduction processing, storing the features in a database, so that the target retrieval system is formed. When the target retrieval system is used for retrieving a query image, firstly feature information of the query image is extracted, and the query image and the foreground target image in the target system are subjected to global feature similarity calculation to obtain a primary screening result; and secondly local feature information of the query image is extracted, the query image and the foreground target image subjected to primary screening are subjected to local feature similarity calculation, and the foreground target image with high global and local feature similarity is taken as a query result image. According to the system and the method, the identification accuracy and performance of cross-lens target retrieval can be improved.

The invention provides a method for detecting 31 common blood pressure-lowering and blood sugar-lowering drugs in blood by an ultra high performance liquid-mass spectrometry, and is characterized in that the method comprises the following steps: (1) confirmation of detected target compounds; (2) sample processing: processing a sample by an organic solvent protein-deposition method; (3) primary screening detection: carrying out primary screening detection by a multiple reaction monitoring (MRM) mode of the ultra high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) in different periods of time; (4) reexamining of the sample which is positive by the primary screening detection in the step (3): after treating and concentrating the sample which is positive by the screening detection, carrying out UPLC-MS/MS detection; and optionally, (5) reexamining of the sample which is positive by the reexamining detection in the step (4): reexamining by a high performance liquid chromatography-high resolution time-of-flight tandem mass spectrometry (HPLC-QTOF). According to a fact that the drugs have different retention time in the set detection conditions, a method for sectional detection is creatively completed. The required time for totally completing the detection of 31 drugs can be within 11 minutes.

The invention belongs to the biological technology and relates to a culture method and applications of Pseudomonas aurantiaca. The prior art shows that Pseudomonas aurantiaca can inhibit various plant pathogenic bacteria; but a small amount of Pseudomonas aurantiaca exists in nature, the propagation speed of Pseudomonas aurantiaca is low and the demands on the disease control of plant and the growth improvement of plant can not be met. The culture method of Pseudomonas aurantiaca comprises the following steps: collecting a sample; preparing a culture medium; selecting and determining the antibiotic and tested pathogenic fungus; performing primary screening and secondary screening of the strain; and using the finally screened strain to perform fermentation and propagation. The obtained Pseudomonas aurantiaca can be utilized to control the diseases of rape, rice, wheat, tomato and corn. The invention has the following advantages: the obtained Pseudomonas aurantiaca has efficient antibacterial activity and remarkable control effect of plant diseases; and the Pseudomonas aurantiaca is safe and non-toxic for people and livestock, and can be used for promoting the growth of crop and be easy to propagate and convenient to use.

Screening and application of yeast with high ethanol yield and low fusel oil yield in Chinese Maotai-flavor liquor production belong to the technical field of biological engineering. The strain is any one strain selected from pichia anomala CGMCC4740, schizosaccharomyces pombe CGMCC4744, zygosaccharomyces bailii CGMCC4745, trichosporon asahii CGMCC4746, saccharomyces cerevisiae CGMCC4747, kazachstania exigua CGMCC4748, pichia fermentans CGMCC4750. The strain is separated from various Daqu, fermented grains, brewing raw materials and brewing environment of several Chinese famous distilleries; the screening method comprises the following steps: diluting distiller yeast samples, fermented grains, brewing raw materials or brewing environment substances, coating on a TTC primary screening plate, selecting a colony with an obvious red color, inoculating the colony in a shake flask for culture, performing secondary screening, determining the contents of ethanol and fusel oil of the fermentation broth by a distillation specific gravity method and HS-SPME-GC-MS respectively, screening the strain with high ethanol concentration and low fusel oil concentration. The strain is applicable to food industry and brewed wine industry.

The invention relates to a man-machine interaction method and system based on space voices. The man-machine interaction method comprises the following steps: recording customer voices through a client microphone; carrying out primary screening to the recorded voice data, thus obtaining voice data; uploading the voice data to a server; analyzing and integrating the received voice data by the server; carrying out space voice generation rendering to the voice data; playing the voice data through the playing end of the client; and generating space voice bullet screen. According to the method and the system provided by the invention, the voices can be positioned in a three-dimensional space; a user is guided to watch a panorama video more effectively; the defect of shielding video contents resultingfrom using the character mode in the traditional bullet screen is overcome; and the interest of the user is increased.

The invention discloses multi-stage sand screening equipment for a building. The multi-stage sand screening equipment comprises a box body, a primary screening mechanism, a secondary screening mechanism and a tertiary screening mechanism, wherein the secondary screening mechanism is arranged on the right side of the box body, the secondary screening mechanism comprises a first screen plate and a material guide plate, the material guide plate is arranged below the first screen plate, and a backflow hole is formed in the position, located at the lower end of the material guide plate, of the boxbody. According to the multi-stage sand screening equipment for the building, a screen drum, scraping plates, an annular supporting plate, a second screen plate and a rotating shaft linkage mechanismare arranged, so that screening and recovery of fine sand in waste residues are achieved by swinging of the second screen plate, the screening effect is improved, repeated sand screening is avoided, and the screening efficiency is improved; the conical screen drum is arranged, and crushing cones arranged on the screen drum and screen holes formed in the screen drum are arranged, so that sand blocks in coarse sand are crushed, meanwhile, the waste residues in the coarse sand are separated efficiently, and follow-up treatment is facilitated; and the screen drum and the second screen plate are arranged, so that the secondary screening is carried out on the coarse sand, and the screening effect is improved.

A streptomyce shygeroscopicus (CCTCC No.M203062) able to generate glutamine transaminase wigh high output is extracted from the soil of milk cow farm through plate screening, primary fermenting, flask culture, comparing test with standard color tape, and enzyme activity test. Said glutamine transaminase is prepared by deep fermentation.

The invention discloses a manufacture method for rhamnolipid that includes the following steps: filtering fungus, inoculating into culture medium after taking dipping preprocess to the sample getting from oil field sewage or grease, inoculating on blood agar plate for culturing, selecting single colony, inoculating on blue agar plate for culturing, selecting the colony having blue halo to the bevel for microbial conserving; fermenting the primary screening strain in fermenting culture medium, testing the oil drainage activity, emulsibility and fermenting liquid surface tension, selecting target strain; taking ferment to the selected strain, and optimizing the fermenting culture medium, fermenting condition and strain to gain rhamnolipid fermenting liquid; distilling rhanmolipid raw product from the rhamnolipid fermenting liquid. The invention has high yield, good heavy hydrocarbon degradation effect, and improves the selecting accuracy.

The invention discloses a colloidal gold method detection test strip and a reagent kit for IgM and IgG antibodies of mycoplasma pneumonia (MP) and a preparation method of the reagent kit. The test strip determines the IgM antibody and the IgG antibody by using a principle of an immunocapture method; the specific IgM and IgG antibodies of the MP can be detected jointly by one operation; the operation process is simplified; and the reagent kit is simple, convenient, rapid and accurate in detection, is particularly applicable to primary screening and epidemiological survey, and has an auxiliary diagnosis effect on early and interim mycoplasma pneumoniae infection.

The invention discloses a lump mineral crushing and primary screening device which comprises a base. Two first supports, two second supports and two third supports are arranged at the top end of the base, the top ends of the two third supports are fixedly connected with a screening box, the top ends of the two second supports are fixedly connected with a crushing box, an inner cavity of the crushing box is provided with a supporting partition plate and divided into a left cavity and a right cavity by the supporting partition plate, two mutually symmetric rotating shafts are arranged in the right cavity, rollers are arranged on the rotating shafts, inclined second guide plates cover the top of the left cavity, the top ends of the two first supports are fixedly connected with a feeding device, and a fine screening mesh is arranged in the middle of an inner cavity of the screening box. The feeding device slowly performs feeding through vibration, centralized feeding of mineral aggregate can be effectively prevented, overload operation of the inside of equipment is prevented, and lump ores can be simply screened and screened by the crushing box and prevented from entering the screening box and damaging the fine screening mesh of the screening box.

Provided is a preparation method for high-quality recycled concrete aggregates. The preparation method comprises steps of sorting of waste concrete, primary crushing, primary screening, rod milling, secondary screening and cleaning, and then the graded aggregates are mixed according to required gradations to obtain recycled coarse aggregates with different particle sizes. According to the preparation method, the cyclic utilization rate of waste concrete can be close to 80%, the resource utilization of construction waste in cities can be realized, the secondary pollution of construction waste to the environment can be reduced, the land occupation account for landfilling of construction waste can be saved, and the industrialization development of comprehensive utilization of construction waste can be promoted to some extent.

The invention discloses a building rubbish disposal method. The building rubbish disposal method comprises the following building rubbish crushing and screening working procedures of soil removal, primary crushing, primary screening, artificial sorting, secondary crushing and secondary screening. Through repeated crushing and screening of building rubbish, the building rubbish can form recyclable aggregate, thus saving building resources.

The invention provide a ultra-performance liquid chromatogram-mass spectrum detection method for 23 types of drugs and mental disease resistant drugs in blood. The method comprises the following steps: 1) sample processing: employing an organic solvent for processing a sample through protein sediment; 2) primary screening detection: employing a ultra-performance liquid chromatogram-tandem mass spectrum (UPLC-MS/MS) multi-reaction monitoring (MRM) mode for primary screening detection; and 3) employing the ultra-performance liquid chromatogram-tandem mass spectrum (UPLC-MS/MS) multi-reaction monitoring (MRM) mode for reinspection of the positive sample through the primary screening in the step 2). According to physical and chemical properties of 9 types of drugs and 14 types of mental disease resistant drugs, during reinspection, the UPLC-MS/MS detection condition which is different with the primary screening detection is employed, different sample pretreatment methods are employed, so that the detection method can satisfy the rapid, sensitive and accurate requirements of primary screening detection, and misjudgement of false positive results can be reduced.

The invention provides a papermaking process method utilizing paper mulberry bark as a raw material. The method comprises the following steps of firstly, performing primary screening and soaking on the paper mulberry bark, stewing the paper mulberry bark into a paper steamer, then grinding, adding quick lime, soaking for a period of time, then stewing the obtained paper mulberry bark into the paper steamer at a high temperature, washing off the lime and impurities from the obtained paper mulberry bark, kneading for peeling, cutting the peeled raw material into slices by use of a steel knife, putting the slices into a stone cistern, and mashing to obtain a paper pulp; and finally, pouring the mashed paper pulp into a paper channel full of water, fully stirring so as to ensure that the paper pulp forms uniform suspension flocculent in water, then performing papermaking and paper squeezing, and sweeping, stoving and tearing off wet paper with moisture, wherein the produced paper is not added with chemicals, does not cause damage to health of users, is fine and smooth in quality, flexible and tough, smooth in hand feeling, abrasion-resistant, free of wrinkles, long in preservation life and wide in application range, and has the characteristics of safety, no pollution, economical efficiency and environmental friendliness.

The invention discloses a recycling method for fluorine-containing ammonia-nitrogen-containing wastewater through tantalum-niobium wet-process smelting, and relates to the technical field of wastewater recycling. The recycling method comprises the following steps: adding hydrofluoric acid or sulfuric acid into wastewater to regulate the pH value of the wastewater to 5-6, completely converting freeNH3 in the wastewater into NH<4+> for being dissolved into the wastewater, performing primary screening on mixed salt wastewater into an ammonium fluoride solution and an ammonium sulfate solution through a primary nanofiltration membrane system, pumping the primarily separated ammonium fluoride solution into a secondary nanofiltration membrane system, removing a little ammonium sulfate in the ammonium fluoride solution, wherein a little ammonium fluoride is contained in the primarily separated ammonium sulfate solution; arranging a fluorine ion concentration online monitor in the primary nanofiltration membrane circulating system until concentration of fluorine ions is lower than a set value; automatically opening an electric regulating valve for discharging the ammonium sulfate solutionwith purity reaching design requirements out of the primary nanofiltration membrane system; and introducing the concentrated ammonium fluoride solution and the concentrated ammonium sulfate solutioninto a low-temperature membrane evaporation and crystallization system, thereby recycling ammonium fluoride crystals and ammonium sulfate crystals.