16results about How to "Reduce preprocessing time" patented technology

The invention belongs to the technical field of city information models, and relates to a WebGL-based city information model two-dimensional and three-dimensional data service dynamic projection method and system. The method comprises the following steps of: judging a requested service type according to a URL (Uniform Resource Locator) address of a data service, and obtaining metadata information of the data service needing to be loaded; judging whether the content identifying the coordinate system information exists in the metadata information, if not, receiving an external declaration, and transmitting the external declaration into a coordinate system; if the data service has the defined coordinate system information, analyzing the coordinate system information of the data service; and calling corresponding dynamic projection components according to different service types, and performing dynamic projection transformation of the data service. According to the method, the data service is dynamically projected to the surface of the earth in real time in a browser environment, the problems of data isolation, low preprocessing efficiency and operation and maintenance redundancy in an existing scheme are solved, and the technical bottleneck that multi-coordinate system data cannot be dynamically processed in an existing Web end three-dimensional scene is broken through.

The present application relates to the technical field of GPU computing optimization, and in particular to a sparse attention computing method, device and medium for GPU, wherein the method realizes the high efficiency of long context reasoning through the geometric perception sparse attention framework of ball hashing, and combines a large-scale parallel hashing optimization algorithm and a load adaptive computing kernel. Compared with the existing sparse attention methods based on heuristics or gradient learning, the present application realizes higher retrieval recall rate, lower preprocessing overhead and efficient hardware adaptation to irregular sparse patterns.

The present application belongs to the technical field of analytical chemistry, plastic detection and regenerated polyester quality control, and particularly relates to a microcoulometric method and system for determining trace PVC content in PET microplastics. After water washing and drying of the PET sample, the method uses a selective solvent mainly composed of tetrahydrofuran to dissolve PVC for a short time and filter and fix the volume, burns the chlorine-containing sample solution under the condition of high temperature, oxygen enrichment and copper-free chlorine-trapping filler, converts chlorine into hydrogen chloride and performs microcoulometric titration, and converts the PVC content according to the electrolytic electric quantity, which has the advantages of rapidness, accuracy, resistance to inorganic chlorine interference and suitability for trace detection.

This invention discloses a pretreatment method for detecting arsenic-containing samples, comprising the following steps: S1. Drying the sludge sample, grinding and sieving it to obtain a pretreated sample; S2. Wetting the pretreated sample with deionized water, adding a digestion solution for digestion at normal pressure, and then using a hydrogen peroxide aqueous solution in boiling water for peroxidation reaction to obtain the sample to be tested; the digestion solution consists of concentrated hydrochloric acid, dilute perchloric acid, and dilute nitric acid; the sample to be tested is directly used for atomic spectroscopy to detect the arsenic content. The light source for atomic analysis spectroscopy is an inductively coupled high-frequency plasma torch. The method is simple, saves materials, has a low detection limit, and high repeatability.

The invention discloses an automatic identification and intelligent evaluation method for a primary frequency modulation disturbance event of a thermal power generating unit, and the method comprises the steps: collecting the operation data of the thermal power generating unit, and constructing a multi-dimensional time sequence data set containing the active power, the power grid frequency and a control instruction; performing abnormal value elimination and high-frequency noise suppression processing on the multi-dimensional time sequence data set to obtain a processed multi-dimensional time sequence data set; constructing an LSTM recognition model fused with the attention mechanism, inputting the processed multi-dimensional time sequence data set into the LSTM recognition model fused with the attention mechanism, and outputting a recognition result after training; based on the recognition result, the amplitude, response delay and overshoot index of the disturbance event are extracted, a comprehensive index is calculated, and the multi-dimensional time sequence data set, the recognition result and the evaluation index are stored and visually output. According to the method, the LSTM model of the attention mechanism is fused, the disturbance recognition accuracy is improved, and the algorithm misjudgment rate is reduced.

This invention discloses a method for preparing Iota carrageenan. Using *Euphorbia tirucalli* as raw material, the raw material is washed to remove salt and sand, then alkali-modified in a potassium hydroxide solution. After acid neutralization, the raw material is directly soaked, ground, and ultrasonically extracted. The extract is then homogenized and finely filtered. A calcium chloride coagulant solution is added, and after mixing, only ethanol is added for dehydration. The precipitate is granulated, dried at low temperature, and pulverized to obtain high-yield, high-viscosity pure Iota carrageenan. This invention employs ultrasonic extraction technology, significantly improving the extraction rate of Iota carrageenan. The potassium salt formed during neutralization saves process water and provides a coagulant for the subsequent coagulation process. Furthermore, the addition of a low concentration of calcium chloride for coagulation greatly reduces the amount of ethanol used in traditional dehydration processes. This invention represents a novel, low-energy-consumption, high-yield, green extraction process for Iota carrageenan with broad application prospects.

This utility model discloses a pretreatment device for protein precipitation in biological detection samples, including a protein precipitation pretreatment plate. A filter plate cover is snapped onto the top of the protein precipitation pretreatment plate, and a limiting mechanism is fixedly connected to the lower surface of the protein precipitation pretreatment plate. A 96-well sample loading plate is slidably connected to the inner side of the limiting mechanism. In this utility model, the 96-well pretreatment plate device has a simple structure design and is easy to manufacture due to the protein precipitation pretreatment plate and limiting mechanism. Furthermore, for the separation and collection of extracts after protein precipitation, the extract collection step can be performed in batches, saving pretreatment time, avoiding extract spillage and cross-contamination, simplifying operation, enhancing the repeatability of the collection process, avoiding operator error during pretreatment, saving sample detection pretreatment time, improving pretreatment efficiency, and making it more practical.

The utility model discloses a kind of pretreatment mechanism for PVC plastic particle hot melting, including material cylinder, the compression stirring rod of rotation installation in material cylinder inside and the hot melting cylinder of fixed setting in material cylinder inside, material cylinder top end is equipped with the reduction motor for driving the rotation of compression stirring rod.Said compression stirring rod includes taper shaft, spiral arrangement in the rotating vane of taper shaft surface and the stirring shaft rod at its bottom end, hot melting cylinder surface is equipped with several homogenization holes, and along axial fixed mounting has electric heating ring.By taper compression structure and spiral conveying cooperation, PVC plastic particle is gradually compacted and forms stable material flow in conveying process.The utility model integrates compression, heating, hot melting and mixing function in the same structure, realizes the efficient pretreatment of PVC plastic particle before entering extrusion or molding equipment, compact structure, stable operation, it is favorable to improve subsequent processing quality and production efficiency.

The invention provides carbonized aggregate, a carbonized product with high carbonization depth and a preparation method of the carbonized aggregate, and belongs to the technical field of carbon sequestration building materials.The preparation method comprises the following steps that solid waste raw materials, cement, silica fume, a thickening agent, a water reducing agent and water are evenly mixed and subjected to pouring forming, and a green body is obtained; and drying the green body until the water content is 13-20%, and carbonizing and curing to obtain the high-connectivity artificial carbonized aggregate. And stacking a plurality of high-connectivity artificial carbonized aggregates in a mold in advance, pouring the slurry into the mold, maintaining at 25 DEG C for 24 hours, demolding, carrying out microwave pretreatment, and then carrying out carbonization maintenance to obtain the carbonized product. According to the method for constructing the continuous carbon dioxide transportation network by using the high-connectivity artificial carbonized aggregate and the preset aggregate technology, the light high-strength carbonized product with the high carbonization depth is prepared, the compressive strength can reach 39.23 MPa after the carbonized product is carbonized for 1 day, the density is 1711 kg / m < 3 >, the carbonization degree is 43.27%, the carbonization uniformity depth is 50 mm, the carbon fixation amount is 356.2 kg / m < 3 >, and the pre-curing time is 4 h.

The invention provides a determination method for rapid screening of plastic part color masterbatch carcinogenic dyes, and the determination method for rapid screening of plastic part color masterbatch carcinogenic dyes comprises the following steps: crushing a plastic sample, adding the crushed plastic sample into dichloromethane, carrying out swelling and decoloration, and carrying out ultrasonic extraction to obtain a swelling mixed solution; adding methylbenzene into the swelled mixed solution to swell and decolor, and performing ultrasonic extraction and concentration to obtain a concentrated extract; adding the concentrated extract into a methanol precipitator, and separating to obtain a precipitate mixed solution; and eluting the precipitate mixed solution through an activated alumina small column, drying, and re-dissolving in methanol to obtain a to-be-detected solution, and analyzing by using a liquid chromatograph-mass spectrometer. Dye molecules are selectively released through step-by-step swelling of dichloromethane and toluene, so that the extraction effect of the color masterbatch dye in the plastic is improved; through combination of step-by-step solvent synergistic swelling extraction and multi-stage purification, drying of polymer dissolved impurities is avoided, and efficient and accurate extraction and determination of the plastic color masterbatch dye are realized.

The application provides a method for inducing rapid rooting of lily bulbils and application thereof, and the lily bulbil (diameter>1.0cm) is used as material, the outer scale is peeled off after surface disinfection and low-temperature pretreatment, the peeled-off outer scale is placed in sterile sawdust with humidity of 15%-25% and cultured at 26 DEG C in dark, and the lily bulbil can be rooted. Compared with a control, the lily bulbil obtained by the method has developed root system, early root system germination, and the number and length of roots are obviously increased, the low-temperature pretreatment time is short, the culture period is short, and a large amount of lily root system can be rapidly obtained in about 10 weeks, and the lily root system can be applied to preparation of medicines, foods and cosmetics resisting melanin synthesis and inflammation reaction, and the method can also realize rapid propagation of lily and provide a new selection, and has important significance. The material is easy to obtain, the method is non-tissue culture, simple and convenient to operate, and can be produced on a large scale, and has good application prospect.

This utility model relates to the field of cylinder head technology, specifically to a pretreatment device for an aluminum alloy cylinder head insert, comprising a sealing chamber. The sealing chamber contains two sets of receiving slots, an adjustment assembly, two sets of suspension components, and an inert gas chamber. The two sets of receiving slots are used to hold molten aluminum. The adjustment assembly is used to adjust the position and angle of the insert. The suspension components are used to suspend and fix the insert. The inert gas chamber is used to supply inert gas into the sealing chamber. Through the cooperation of the drive motor, transmission gear shaft, and meshing gears in the adjustment assembly, the suspension components and the insert can be rotated at an angle. Simultaneously, the lifting cylinder can adjust the immersion depth of the insert in the molten aluminum. This multi-dimensional adjustment ensures that all parts of the insert can uniformly contact the molten aluminum, avoiding differences in aluminizing speed caused by localized iron enrichment. This improves the consistency of the aluminized layer thickness, shortens the pretreatment time, and enhances the overall process efficiency.

The utility model provides a kind of superfast detection device of fluorescent quantitative polymerase chain reaction, it is related to molecular biology detection technical field, including: casing, the bottom position of the one side of the casing and the inside position of casing are equipped with firm plate respectively, the firm plate of bottom is equipped with first electric motor on one side, the bottom position of the firm plate of inside is equipped with third electric motor, the bottom position of casing is equipped with locating sleeve on the other side.Electric motor driven stirring sleeve simultaneously, synchronously stirs a group of reaction test tube, makes fluorescent quantitative polymerase chain fully mix in reaction test tube, the inside of stirring sleeve is provided with detection rod and the reaction of fluorescent quantitative polymerase chain is rapidly detected, the setting of an electric motor simplifies the drive structure and energy consumption of a group of stirring sleeve, detection rod, solves the problem that traditional integration structure is poor in adaptability, maintenance is complicated.

The invention provides a saliva-based PCOS early-screening microfluidic dual-enhanced electrochemical chip and a detection method thereof, the electrochemical chip comprises: a microfluidic pretreatment module, in which a filter area is used for intercepting insoluble impurities in saliva injected through a sample introduction area, an enrichment area is used for enriching target hormones, and a detection area is used for bearing an enriched sample; the dual-enhancement electrochemical detection module is used for detecting a sample located in a detection area, a signal acquisition unit is used for acquiring an electrochemical signal of the sample, a signal amplification unit is used for performing physical and chemical dual enhancement on the electrochemical signal, and a signal processing unit is used for calculating hormone concentration; the collaborative integration module is arranged between the detection area of the microfluidic pretreatment module and the dual-enhancement electrochemical detection module, the connection unit is used for realizing electric connection, and the trigger unit is used for automatically starting a detection process based on an electrode contact signal of the detection area. The performance of the electrochemical chip in the aspects of detection efficiency, sensitivity, portability and the like is remarkably improved.

The utility model belongs to soil detection technical field especially for soil cyanide determination device based on gas chromatography, including including preprocessing unit, gas chromatography detection unit and automation control unit, preprocessing unit includes ultrasonic extraction module, automatic distillation module and derivatization module, gas chromatography detection unit includes headspace sampler, chromatographic column and detector, automation control unit includes microprocessor and data processing module, still include the derivatization device for derivatization module in preprocessing unit, the utility model, adopt ultrasonic extraction and automatic distillation combination, shorten the pretreatment time, shake the reactor ware in the derivatization process simultaneously, make the reactant fast mixing reaction, promote the reaction speed and efficiency, and the detection sensitivity is promoted to chloramine T derivatization technology, and the sample processing is from data output and all is by microprocessor control, reduces the human error, promotes the accuracy of detection, and the speed is fast, the efficiency is high, and the convenient use.

This utility model relates to the field of DHA algal oil filtration technology, and more particularly to a filtration device for DHA algal oil, including a housing, a moving mechanism on the side of the housing, a thawing mechanism disposed within the moving mechanism, a first filtration mechanism fixedly installed below the thawing mechanism, and a second filtration mechanism fixedly installed below the first filtration mechanism. This utility model employs a split-type thawing box design in the thawing mechanism, which can quickly and evenly melt solidified algal oil raw materials, avoiding DHA oxidation loss caused by localized overheating. The moving mechanism, in conjunction with a sliding groove, allows for flexible pulling of the thawing box. The solenoid valve of the first filtration mechanism can precisely control the coarse filtration flow rate, while the second filtration mechanism further removes micron-sized impurities through silk mesh gradient filtration. The synergistic effect of the two stages ensures high light transmittance and low acid value of the algal oil. Real-time monitoring of the filtration process is achieved through a glass observation window and a weighing plate, and support legs and anti-slip pads enhance the equipment's resistance to displacement in vibration environments.