175results about How to "Guaranteed extraction efficiency" patented technology

The invention provides a division and identification method and device based on a dense network image and relates to the technical field of neural networks. The division and identification method based on the dense network image comprises the following steps: firstly, capturing layering features of the dense network image by taking a convolutional layer as a feature extracting device; inputting obtained multi-scale feature patterns into an encoding module; meanwhile, connecting feature patterns with different scales with the feature patterns with the corresponding scales in the encoding moduleby utilizing jumping connection; carrying out down-sampling and semantic feature extraction on the feature patterns by applying the encoding module; carrying out up-sampling on the feature patterns by applying a decoding module and recovering detailed information to obtain the multi-scale feature patterns; then carrying out chain type residual error pooling operation on an output feature patternobtained by dense deconvolution operation, so as to improve the accuracy of boundary division and capture local contextual information; adding depth monitoring into three boundary thinning blocks in the encoding module and carrying out steps above to improve the precision of medical image division.

The invention relates to a method for refining and purifying polyformaldehyde dialkyl ether. By deeply researching the extraction unit technique of the polyformaldehyde dialkyl ether in the prior art, the invention finds out the reasons for influencing the extraction yield of the extraction unit and the purity of the extraction product, thereby providing a refinement extraction technique capable of enhancing the extraction yield and product purity. A proper amount of sodium hydroxide is added into the polyformaldehyde dialkyl ether balance product to remove formaldehyde in the polyformaldehyde dialkyl ether balance system. Under the refinement and purification conditions provided by the invention, the sodium hydroxide can easily break the complexation system between the formaldehyde and the polyformaldehyde dialkyl ether with different polymerization degrees, and the products with different polymerization degrees can be refined and purified by a conventional technique, such as distillation and the like.

The invention relates to a method and a system for extracting a resequencing template in machine translation. The method comprises the following steps of: (1) inputting bilingual alignment corpus and carrying out word segmentation and part-of-speech tagging on a source language part in the bilingual alignment corpus; (2) resequencing and analyzing each bilingual pair of sentences in the bilingual alignment corpus and extracting a resequencing example; (3) dividing each resequencing example into two parts according to the positions of a word pair in a source language and a target language in the resequencing example, and for each part, confirming a variable part according to the part-of-speech tagging, and replacing the variable part with a variable. The invention can eliminate the restriction to extract a translation template in the prior art and can extract various resequencing templates so as to increase the coverage rate of the resequencing template on resequencing phenomena in translation.

The invention relates to a method for refining and purifying polyformaldehyde dialkyl ether. By deeply researching the extraction unit technique of the polyformaldehyde dialkyl ether in the prior art, the invention finds out the reasons for influencing the extraction yield of the extraction unit and the purity of the extraction product, thereby providing a refinement extraction technique capable of enhancing the extraction yield and product purity. A proper amount of sulfite is added into the polyformaldehyde dialkyl ether balance product to remove formaldehyde in the polyformaldehyde dialkyl ether balance system. The method for refining and purifying polyformaldehyde dialkyl ether belongs to solid-phase reaction, the generated alpha-hydroxysulfonate is insoluble in the product, the impurities after reaction are easy to separate, and thus, the technique is simple. The method of adding sulfite several times is beneficial to breaking the adsorption balance between the sulfite and formaldehyde, so that the reaction proceeds forwards, thereby sufficiently removing the methanol by the reaction. Since the sulfite is added in a solid phase, the problem of dissolution of methanol and other materials in the water solution does not exists, and thus, the recovery rate of the product is high, thereby effectively lowering the production cost.

The invention discloses cordyceps cicadae wine and a preparation method thereof. The cordyceps cicadae wine is obtained by dipping coremium of paecilomyces cicadae and/or mycoplasma, as raw materials, in base wine, or obtained by mixing an extract of the coremium of paecilomyces cicadae and/or an extract of mycoplasma, as raw materials, with drinking wine. In the cordyceps cicadae wine, the raw materials are fully utilized, activated secondary metabolism components in the mycoplasma are effectively kept, the integrity of active components in the cordyceps cicadae wine is ensured, the product quality is stable and the production cost is low.

An embodiment of the invention provides a named entity extraction method and device. The method includes: preprocessing a sample corpus to generate a standard corpus with the preset length and an annotation; constructing a feature vector of each character in the standard corpus; training a preset long-term and short-term memory network according to the feature vectors to obtain a predicted label value of each character; optimizing the preset conditional random field model according to the predicted label value and the true label value of each character; conducting named entity extraction usinga neural network model consisting of the long-term and short-term memory network and the conditional random field model. By means of the technical scheme, the feature vectors capable of characterizing more corpus features are constructed by controlling the length of the standard corpus. Further, by means of the method for optimizing the output sequence of the neural network model by using the conditional random field model, the named entity extraction accuracy is improved while the named entity extraction efficiency is guaranteed.

The invention relates to a magnetic-bead-process-based kit for extracting free DNAs (deoxyribonucleic acids) and an application method thereof. The kit comprises a DNA fixation combination solution, a first magnetic bead suspension, a cleaning solution, a genome DNA removal solution, a second magnetic bead suspension and an elution solution which are respectively packaged independently. The kit can be used for directly extracting free DNAs from the whole blood sample. The object for extracting and purifying free DNAs is widened from the serum or plasma to the whole blood sample, and the free DNA extraction step is extended forward to the blood preliminary treatment, thereby greatly reducing the original steps for extracting free DNAs from blood. Besides, the kit can also be used for extracting and purifying free DNAs from a plasma or serum sample. The kit can be used for removing genome DNA interference. The kit can be used for removing trace genome DNAs mixed in the whole blood, plasma or serum, thereby lowering the subsequent testing interference. Different reagents in the kit are compounded, so that the free DNA extraction efficiency and purity are maximally ensured.

The invention discloses a method for simultaneously measuring residual quantity of three types of herbicide in vega soil, belonging to the technical field of physicochemical detection of pesticide residue in vega soil. Specifically, acetonitrile is used for extraction, Florisil is carried out with solid phase extraction, a gas chromatograph is matched with an electron capture detector to directly measure the residual quantity of three types of herbicide, such as propanil, Rimsulfuron, quizalofop-p-ethyl and the like in vega soil. The invention overcomes the restriction of the defect and the condition of the prior art to optimize the pretreatment method and the instrument detection condition of vega soil samples. Compared with the prior art, the invention has the following favorable advantages that the invention can detect three types of herbicide all at once and has the advantages of simple pretreatment process, high detection sensitivity and good accuracy and reproducibility.

The invention discloses a method for efficiently producing melatonin, relates to the technical field of melatonin synthesis, and aims to solve the problems that purity and an extraction rate of melatonin are relatively low and preparation cost is relatively high in the prior art. According to the method, 5-methoxy indole is taken as 100% of a raw material, carbonyl chloride accounts for 98% of theraw material, ammonium hydroxide accounts for 57% of a generation compound, and lithium aluminum hydride accounts for 80% of the generated compound. The 5-methoxy indole (1) is taken as a raw material, and a carbonyl chloride reaction solvent is added to acylate the 5-methoxy indole, so that a reaction is carried out to generate a compound (2); the generated compound (2) is stranded, and then anammonium hydroxide solvent is mixed with the generated compound (2) according to a certain usage amount to generate a compound (3); and after the compound (3) is generated, a lithium aluminum hydridereagent is added to carry out a reduction reaction on the compound (3) to generate a compound (4).

The invention discloses a pu'er raw tea extract for effectively retaining quality of original tea and a preparation method and an application of same. The pu'er raw tea extract comprises tea polyphenol, caffeine, tea polysaccharide, amino acids, and an aroma component. The mass percents of the components are respectively as follows: 25-69% of tea polyphenol, 8-20% of caffeine, 10-30% of tea polysaccharide, 5-23% of amino acids, and 0.01-0.1% of aroma component. The sum of mass percents of the component is not greater than 100%. The preparation method comprises the steps of: tea digestion, cooling and clarification, primary concentration, second concentration and low temperature drying. The pu'er tea extract is applied to instant tea beverages, tobacco or foods. Oxidation and loss of main thermosensitive substances such as aroma and taste are reduced by middle- and low-temperature digestion, constant temperature film concentration and low temperature drying technologies and the like. The preparation method is simple, and the aqueous solution of the extract has a scent and is strong in aroma, smooth to drink, sweet and liquid-engendering, and red and bright in liquor color. The pu'er raw tea extract is similar to the original pu'er tea in tea liquid scent, taste and liquor color.

The invention discloses a kit and a method for separating free nucleic acid in peripheral blood by using magnetic microspheres and belongs to the technical field of biologics. Based on magnetic microspheres coupled with Oligo(dT)25 and a nonspecific capturing probe which comprises Poly-A and a sequence of L(k)2-d(k)5-L(k)2-d(k)5-L(k)2-dT5dA15, nucleic acid in a peripheral blood sample is captured and subjected to magnetic separation, and a splitting buffer liquid, proteinase K, a washing buffer solution and an elution buffer solution of a formula are further optimized, so that the kit and the method for separating free nucleic acid in peripheral blood by using magnetic microspheres have the advantages that rapid splitting and efficient washing and elution are achieved, the free nucleic acid in the peripheral blood sample is efficiently extracted, and sufficient free nucleic acid can be extracted from a small amount of samples; the kit and the method are easy to operate and are safe and environmentally friendly, steps are greatly simplified, the experiment efficiency is improved, good repeatability is achieved, and high-flux automatic operation is facilitated.

The invention provides a method of making a milky coffee drink with a capsule drink machine. The capsule drink machine comprises a base, a brewing chamber, a control panel, a brewing head, an inflow piercing needle, an extraction piercing needle, a liquid supply mechanism and a brewing cup for receiving milky coffee capsules; each milky coffee capsule includes a capsule body and a membrane and also includes a separator for liquid passage, the separator is arranged in the capsule body and divides an inner cavity of the capsule body into a first cavity and a second cavity, milk powder is arranged in the first cavity, and coffee powder is arranged in the second cavity; the method comprises the steps of emulsifying, extracting and mixing; sequentially, the milk powder is emulsified and brewed, the coffee powder is extracted and filtered, and milk and coffee liquids are mixed into a milky coffee drink; in the method, the milk and coffee liquids are mixed well, the milk liquid never floats on the surface of the coffee liquid, the taste of the milky coffee drink is enhanced, and the milky coffee drink has good color and appearance.

The invention discloses a method of simultaneously detecting residues of different types of veterinary drugs in fish meat. In the method, a sample is subjected to pretreatment with a mixture solutioncomposed of acetonitrile, methanol and water according to the volume ratio of 3:1:1 and contains 1% of acetic acid (v/v) and 10 mM of EDTA disodium. A purification operation is composed of one time oflow temperature standing treatment and two times of low-temperature high-speed centrifugation, so that majority of co-extracted protein and lipid impurities are removed. Finally, qualitative detection and quantitative analysis to all target substances are completed by means of tandem of ultra-high performance liquid chromatography and Orbitrap high-resolution mass spectrum under positive and negative ionization modes. The method can simultaneously detecting eighty kinds, covering twelve types, of common fish-use veterinary drug compounds, thus achieving general detection of the veterinary drug compounds in fish meat at high sensitivity, broad spectrum, high speed and high throughput. The method includes simple and high-effective pre-treatment process, so that extraction efficiency of theresidual compounds in various types is ensured. Tandem ultra-high performance liquid chromatography and Orbitrap high-resolution mass spectrum represents high selectivity and sensitivity, so that screening and quantification to potential target substances in the sample can be completed at a lower level.

The invention discloses a sample preparation treatment method for excrement and soil metabonomics study. The sample preparation treatment method comprises the following steps: pretreating a sample to obtain first suspension; adding a steel ball and shaking, breaking and extracting to obtain the broken first suspension; performing ultrasonic treatment; centrifuging; collecting first supernate and precipitate; concentrating the first supernate until the first supernate is nearly dry; adding water-soluble re-dissolution liquid and a steel ball, and shaking for re-dissolution; centrifuging at a high speed, wherein obtained second supernate is a water-soluble metabolism extract which can be analyzed directly on a machine; adding a fat-soluble metabolite extracting solution into the collected precipitate, and mixing uniformly to obtain second suspension; shaking, breaking and extracting; performing ultrasonic treatment; centrifuging; collecting a lower-layer solution; blowing to dry the obtained lower-layer solution through a nitrogen blowing way; adding fat-soluble re-dissolution liquid and a steel ball, and shaking for re-dissolution; centrifuging at a high speed, wherein an obtained product is a fat-soluble metabolism extract which can be analyzed directly on the machine. The method disclosed by the invention has the advantages of simple operation, strong stability, comprehensiveness and high recovery rate, and is of great significance to extensive related studies of excrement and soil metabonomics.

The invention relates to the technical field of plant active material extraction, and particularly relates to a vitex negundo linn leaf extract and preparation method as well as application thereof. General flavone content in the vitex negundo linn leaf extract is not less than 82.5%, organic is not used in the preparation method of the vitex negundo linn leaf extract, and on the premise of guaranteeing purity of flavonoid compounds, extraction efficiency is improved. Experiment shows that, when being used in skin care products, the vitex negundo linn leaf extract cannot cause adverse reaction, and enables skin to be more shiny and elastic.

The invention relates to an intelligent filtering tissue box. The intelligent filtering tissue box comprises a tissue box body (1), a tissue box bottom plate (2), a top plate (4), at least one spring (5), a distance measuring sensor (8), a control module (6) , a power supply (7), a voice alarming module (9) and a filtering circuit (10), wherein the power supply (7), the voice alarming module (9) and the filtering circuit (10) are respectively connected with the control module (6); the top plate (4) is arranged above the tissue box bottom plate (2) through the springs (5) and is positioned in the tissue box body (1); and the distance measuring sensor (8) is arranged at the edge of the upper surface of the top plate (4). Through an upward force of the springs (5) on the top plate (4), a tissue under an extracted tissue can be fed into a tissue extracting opening (3) in time, and a user can use the tissue later conveniently. Moreover, by the distance measuring sensor (8), whether tissues in the tissue box run out or not can be detected, the user can be reminded of adding tissues, and tissue extracting efficiency of the tissue box is guaranteed effectively.

The invention discloses an extraction technology of egg yolk immunoglobulins, comprising the following steps: a) preparing antigen; b) immunizing laying hen, and collecting eggs; c) uniformly stirring membrane-removed egg yolk, freezing at the temperature of minus 20 DEG C +/- 3 DEG C for at least 24-72 h, rapidly unfreezing, adjusting pH, and standing overnight; d) carrying out centrifugal filtration, carrying out ultrafiltration concentration, carrying out displacement by the use of a sodium chloride solution, carrying out precipitation by the use of ammonium sulfate, and dissolving by the use of sodium chloride; and e) successively carrying out dialysis and centrifugal filtration so as to obtain an egg yolk immunoglobulin liquid. By a series of physical-chemical processes such as centrifugation, filtration, precipitation, dialysis, etc., extraction and purification of egg yolk immunoglobulins are carried out in the invention. In comparison with the prior art, the invention has the following advantages: operation is convenient; extraction cost is low; the extraction technology is easy to control; the extracted egg yolk immunoglobulins can be greatly used for treatment of periodontitis; and the effect is obvious. The extraction technology can be adopted for large-scale industrial production.

The invention provides an intelligent smokeless pot device capable of automatically adjusting blower power, which comprises an intelligent smokeless pot main body, a processor, a controller, a temperature sensor, and a weight sensor; the processor is provided with an adjusting part and a parameter acquiring part, wherein the parameter acquiring part reads the set pot temperature of a pot temperature setting unit in real time; the temperature sensor detects current temperature of the pot body; the weight sensor detects weight of a load in the pot body; when any one of two conditions below is satisfied, the adjusting part sends a first speed-up signal to the controller when 1) detection result of the temperature sensor is more than the first temperature threshold value, and the weight of theload is more than the weight threshold value; 2), the set pot temperature is more than the second temperature threshold value, the load weight is more than the weight threshold value; the controlleradjusts the rotate speed of the motor according to the first speed-up signal of the adjusting part, so that the rotate speed of the motor is increased to the first setting rotate speed. The intelligent smokeless pot device can adjust blower power through adjusting motor rotate speed, and save energy consumption on the basis of guaranteeing the oil smoke extraction efficiency.

The invention discloses a water body extraction method for a high-resolution remote sensing image. Firstly, an original high-resolution remote sensing image is given; a local binary pattern and K nearest neighbor-based algorithm is proposed for performing water and land coarse separation; and noise points in a classification area are suppressed through morphological processing. Secondly, a LBP andsupport vector machine-based method is designed for performing further fine separation on a water and land boundary region; and noise points near a refined boundary area are removed through morphological filtering. Finally, for a refinement result, a morphological corrosion operation is adopted for smoothing the edge of a water body to obtain a final water body extraction result. According to themethod provided by the invention, a ''coarse separation and fine separation'' strategy is adopted to carry out water and land separation, so that the accuracy is higher; in addition, two different classification methods of KNN and SVM are adopted, so that on one hand, the extraction efficiency is ensured, and on the other hand, the classification of pixels with different sizes is adapted and a final classification result is steady and effective.

The invention discloses a testing and extracting device of Chinese herbal medicines. The testing and extracting device of the Chinese herbal medicines comprises an outer box body, wherein a heater isfixedly mounted on the inner bottom surface of the outer box body, an avoiding hole is formed in the center of the lower surface of the outer box body, open sliding grooves are formed in both two lateral surfaces of the inner part of the outer box body, guide rods are fixedly connected with the central parts of the inner parts of the open sliding grooves, guide blocks are glidingly connected ontothe outer surfaces of the guide rods, the outer surfaces of the guide blocks are glidingly connected to the inner lateral surfaces of the open sliding grooves, an inner box body is fixedly connected onto the inner lateral surfaces of the guide blocks, the outer surface of the inner box body is glidingly connected to the inner lateral surface of the outer box body, a sealing cover is in threaded connection with the upper surface of the inner box body, and positioning threaded holes are formed both in two sides of the upper surface of the sealing cover. The testing and extracting device of the Chinese herbal medicines can greatly improve the use convenience and stability to ensure the extraction efficiency through the outer box body and the structure of the inner box body glidingly connectedinternally.

The invention provides a biological sample pretreatment method for treating a biological sample to obtain a pretreatment sample before gas chromatography and mass spectrometer combined detection and analysis on a metabolite in the biological sample from a living organism, application thereof to metabolite detection, and a corresponding metabolite detection and analysis method. The biological sample pretreatment method comprises the following steps: 1, performing extracting treatment; 2, performing a derivative reaction: performing the derivative reaction on the extracted biological sample by using an auxiliary reagent and a derivatization reagent to obtain a derivative biological sample; 3, standardizing and removing impurities, wherein the auxiliary reagent at least comprises a strong alkaline solution and a low-temperature alcohol organic solvent; in the step 1, the strong alkaline solution is used first and then the low-temperature alcohol organic solvent is used for continuously extracting the biological sample.

The invention discloses a high-purity lithium chloride extraction device. The high-purity lithium chloride extraction device comprises a filter press, a blending tank, an extraction system, a washing system, a reverse extraction system, a deironing system and an oil removal system which are sequentially connected through a pipeline, the blending tank is used for acid regulating treatment, and the extraction system, the washing system and the reverse extraction system are respectively formed by connecting multiple stages of centrifugal extractors in series. The reverse extraction solution outlet end of the reverse extraction system is connected with the washing system, the organic phase output end of the reverse extraction system is connected with a saponification system, and the saponification system is connected with the extraction system. A circulating loop is formed by the extraction system, the washing system, the reverse extraction system and the saponification system. The device is further provided with a data analysis system, and the work positions of the abnormal centrifugal extractors can be automatically switched to a standby centrifugal extractor through the system. Variable-frequency closed-loop flow control systems are arranged at the material input ends of all the systems in the circulating loop for obtaining the precise flow-input phase ratio through timely adjustment. The device is high in extraction efficiency, short in phase balance setting time, small in solvent needing amount, low in solvent consumption and continuous and reliable in process.

The invention relates to the technical field of health wine, in particular to health wine capable of reinforcing the kidney to strengthen yang and a preparation method of the health wine. The health wine is processed from raw materials by mass as follows: 3,000-30,000 g of Dendrobium officinale, 1,500-15,000 g of mulberries, 1,000-10,000 g of sharpleaf galangal fruits, 1,000-10,000 g of wolfberries, 1,000-10,000 g of peach seeds, 500-5,000 g of ginseng, 500-5,000 g of jujube kernels, 250-2,500 g of cinnamon, 250-2,500 g of liquorice, 500-10,000 g of white granulated sugar and 220,000-450,000 g of a wine matrix. The health wine has the effects of reinforcing the kidney, refilling essence, benefiting marrow, and promoting blood circulation to remove meridian obstruction, can build fitness and prolong life and is suitable for modern people to drink. The preparation method has simple and mature process and good economic benefit and facilitates popularization and application.