31results about How to "Improve extraction" patented technology

Methods and apparatus for blood sampling from skin capillaries are provided. Blood extraction is improved by applying gradient pressure in a proximal to distal direction of an extremity. Blood is extracted and sampled from the skin capillaries with a blood sampling mechanism of at least a lancet and testing kit.

The invention relates to the technical field of physical and chemical inspection of paper materials for cigarette, and in particular discloses a method for determining the content of phthalate in the paper material for the cigarette. The method utilizes an internal standard method and comprises the following steps of: preparing an internal standard solution, mixing a standard operation solution with a sample solution, respectively carrying out analysis detection on the mixed standard operation solution and sample solution through GC-MS (Gas Chromatography Mass Spectrometry), and obtaining the content of phthalate in the paper material for the cigarette according to the detection result. According to the method for determining the content of the phthalate in the paper material for the cigarette, disclosed by the invention, a process method of the sample and the GC-MS detection conditions are optimized, the extraction efficiency of the phthalate in the sample to be detected is remarkably improved; in addition, the method for determining the content of the phthalate in the paper material for the cigarette, disclosed by the invention, has the advantages of exactness in operation, high sensitiveness and accuracy, and good repeatability; if the detection limit is detected through three times of the ratio of signal to noise, the detection limit is 0.3mu g/g-0.6mu g/g; and the spiked recovery rate is 90.2-100.6%, and the relative standard deviation is 2.2-6.7%.

Proposed for high-performance light-emitting diodes are semiconductor chips (1) whose longitudinal sides are substantially longer than their transverse sides. Light extraction can be substantially improved in this manner.

A lead includes a lead body with a stylet receiving lumen, a distal tip, and a distal portion proximal of the distal tip that is biased to assume a non-linear configuration. Insertion of a stylet into the lumen causes the distal portion to transition from the non-linear configuration to a generally linear configuration. The lead also includes a first arm member having a distal end and a proximal end coupled to the lead body proximal of the distal tip; and a nosepiece, at least a portion of which is biodegradable. The nosepiece is configured to receive the distal tip of the lead body and the distal end of the first arm member such that the lead body, first arm member and nosepiece form a closed arrangement prior to biodegradation of the nosepiece and an open arrangement after biodegradation of the nosepiece.

The invention discloses a treatment method of high-concentration phenolic wastewater generated in a lignite upgrading process. The method comprises the following steps: high-concentration phenolic wastewater subjected to deacidification and ammonia removal enters a plurality of extraction columns connected in series, each extraction column uses a fresh extractant to perform counter-current extraction on the phenolic wastewater, and cross-flow extraction is formed between every two extraction columns. The extractant can be methyl isobutyl ketone, mesityl oxide or tert amyl methyl ether. The number of the extraction columns can be 2-4. The amounts of the fresh extractants in the extraction columns can be different. After the wastewater treated by the method is subjected to solvent stripping, the optimal COD (chemical oxygen demand) can be down to 4000 mg/L below, and the total phenol content is lower than 220ppm, thereby completely satisfying the demands for conventional subsequent biochemical treatment.

The invention relates to an organic phase extraction and rare-earth separation process. According to the organic phase extraction and rare-earth separation process, a saponified organic extractant is mixed with water-phase rare-earth solution, rare-earth ions are exchanged and enter an organic phase to complete a rare-earth extraction process, then the organic phase enters a washing section and/or an acid pickling section, the organic phase is washed by acid solution or the rare-earth solution, or rare earth in the organic phase is reversely extracted by inorganic acid to obtain a blank organic phase for a cycle, the blank organic phase is pre-treated before cyclical use, impurities mainly containing uranium and thorium in the blank organic phase are reversely extracted by washing solution in sequence, and the blank organic phase is washed. The rare-earth impurities of uranium and thorium which are difficult to remove are removed through pre-treating the blank organic phase before cycle, and the contents of uranium and thorium in the blank organic phase are reduced to be below the original 10% respectively, so as to improve the extraction effect of the organic phase and guarantee the cycle performance of the organic phase, and then improve yield and product quality.

The invention discloses a method for mixing raw materials and a solvent in a lubricant extraction process. The method comprises the following procedures: (1) dividing furfuraldehyde solvent into two parts of furfuraldehyde solvent A and furfuraldehyde B, wherein the furfuraldehyde A and the raw materials form a premix after being commonly mixed through a mixer, and the premix enters the lower partof an extraction tower after passing through a raw material cooler; (2) enabling the furfuraldehyde B to enter from the upper part of the extraction tower in the extraction tower, enabling the raw materials in the premix to upward and reversely contact with the furfuraldehyde B; and (3) forming refining solution at the tower top of the extraction tower, maintaining the pressure of the tower top at 0.5 MPa, enabling the refining solution to enter the refining solution recycling system by self-pressure; forming dispatching solution at the tower bottom, enabling the dispatching solution to enterthe dispatching solution recycling system after being discharged from the tower bottom. Through the method disclosed by the invention, the separation effect of the extraction tower can be effectivelyimproved, and the yield of the refining oil in the raw material is improved.

The invention discloses an extraction method of anthocyanin. The method comprises the following steps: (1) putting original Lonicera caerulea fruits into a container, introducing sulfur dioxide, adding 30% hydrochloric acid, pulverizing, fermenting, carrying out enzymolysis, and filtering to obtain a Lonicera caerulea enzymolysis solution; (2) dropwisely adding the Lonicera caerulea enzymolysis solution into a macroporous resin column, washing with a 10-90% ethanol solution, concentrating the washing solution under reduced pressure until no ethanol smell emits, regulating the pH value to 9, and carrying out centrifugal separation to obtain a Lonicera caerulea extracting solution; and (3) adding the Lonicera caerulea extracting solution and an amide ionic liquid disclosed as Formula (I) into a reaction vessel, extracting with stirring at 5-50 DEG C for 1-50 hours, standing to stratify, separating out the organic phase, and determining the content. In Formula (I), R<1> and R<2> are respectively C1-C10 amido or C1-C10 alkyl; and L<-> is BF4<->, PF6<->, OAC<->, CF3SO3<-> or N(SO2CF3)2<->.

The invention discloses health maintenance and health care wine and a preparation method thereof. According to the health maintenance and health care wine, 250-1,000 ml of water, 20-200 g of honey, 10-50 g of saffron, 20-100 g of poria cocos, 20-100 g of fleeceflower roots, 20-100 g of polyhachis vicina roger, 20-100 g of fiveleaf gynostemma herbs, 20-100 g of black mulberries, 20-100 g of yams, 20-100 g of black sesame, 20-100 g of fructus lycii, 20-100 g of walnuts, 20-100 g of red dates and 20-100 g of desertliving cistanche are added to every 1,000-8,000 ml of base wine; the alcohol volume fraction of the base wine is 50%-60%. According to the preparation method, the base wine and additives are mixed and then subjected to cold soaking and sealing for fermentation, a fermented mixed liquid is filtered, fermented raw wine is obtained and flavored by the aid of the honey and the water, and the health maintenance and health care wine with the excellent taste is obtained. The preparation method is simple, and the wine has the remarkable health maintenance and health care effects.

Relating to the technical field of experimental equipment, the invention discloses a novel pear-shaped separating funnel, which comprises a bottle body, a bottleneck arranged at the upper end of the bottle body, and a drain pipe arranged at the lower end of the bottle body. The bottle body is in the shape of a pear and has a large top and a small bottom, the drain pipe is equipped with a cock cavity, in which a cock is disposed. A novel pear-shaped separating funnel cleaning device includes a support platform, stand columns arranged at four corners of the support platform, and a cleaning platearranged at the tops of the four stand columns. The support platform is used for placing the separating funnel, a cleaning brush is arranged under the cleaning plate, a rotary table is arranged at the middle of the cleaning plate, and a water inlet pipe is arranged at the center of the rotary table, the cleaning brush is connected to an external water source through a water inlet pipe passing through the rotary table. The drain pipe is S-shaped, improves the flow path of liquid in the extraction process, enhances the extraction effect and makes the solution separation more thorough. The cleaning device realizes the function of fast cleaning of the funnel and improves the cleaning efficiency.

The invention discloses an extraction method of cigar tobacco leaf essential oil, which comprises the following steps: shredding cigar tobacco leaf leftovers, adjusting the water content, standing at room temperature, freezing at -5 to -10 DEG C for 2-6 hours, drying to constant weight, crushing and sieving, spraying an enzymolysis solution on the surface of the cigar tobacco leaf leftovers, and then performing enzymolysis and high-temperature inactivation to obtain enzymolyzed tobacco leaves; adding the enzymolyzed tobacco leaves into a tubular furnace, heating to 120-160 DEG C under the protection of nitrogen, keeping the temperature for 1-2 hours, slowly cooling to room temperature, and grinding to obtain pre-crushed cigar tobacco leaves; adding the pre-crushed cigar tobacco leaves into an ultrasonic extraction tank, adding an organic solvent, soaking, carrying out ultrasonic extraction, and collecting an extracting solution a; adding an organic solvent into the residual material residues, performing ultrasonic extraction, and collecting an extracting solution b; and combining the extracting solution a and the extracting solution b, concentrating under reduced pressure, keeping the vacuum pressure of the system at 1-1.5 kPa, and collecting fractions with the boiling point lower than 175 DEG C to obtain the cigar tobacco leaf essential oil. Waste in the cigar processing process is turned into wealth, the extracted essential oil is pure natural tobacco homologous perfume, and the defect that tobacco products are insufficient in fragrance is effectively overcome.

The invention discloses a method for extracting natural effective components of a bacteriostatic agent. The method comprises the following steps: carrying out primary steam heating on natural plants,then carrying out primary freezing treatment, carrying out primary crushing in the primary freezing treatment process, unfreezing the crushed material to room temperature, carrying out secondary steamheating, then carrying out secondary freezing treatment, carrying out secondary crushing in the secondary freezing treatment process, and unfreezing obtained powder to room temperature to obtain a prefabricated material; adding water into the prefabricated material, adding cellulase for enzymolysis and inactivation, adding nano bentonite and nano aluminum oxide for mixing, then adding microcrystalline cellulose, performing stirring, adding a cross-linking agent in a stirring state, performing stirring, standing, concentrating and drying to obtain the natural effective components of the bacteriostatic agent. According to the invention, the natural components are extracted from plants, and have a good antibacterial effect. The natural components contain the natural plant extract with the antibacterial effect, so that the addition amount of original chemical preservatives can be reduced, and meanwhile, the product has antibacterial and anti-inflammatory effects.

The invention discloses a plant essential oil production method. According to the plant essential oil production method, medicine raw materials are selected, wherein American ginseng, saussurea involucrate, pseudo-ginseng, folium artemisiae argyi, and philippine flemingia root; the medicine raw materials are processed into decoction pieces; classification extraction is carried out, obtained semi-finished products are subjected to supercritical carbon dioxide extraction, blending is carried out, based on assistant and guide principles, mulberry leaf, chrysanthemum flower, dried orange peel, andcaulis bambusae in taeniam are added, a solvent is added, aseptic subpackaging is carried out, and obtained products are packaged. The plant essential oil production method is capable of increasing effective component extraction degree, and reducing impurity content.

The invention provides an image information extraction and generation method based on an inter-region attention mechanism. The method comprises the following steps: 1, a generator coding stage: takinga semantic label graph in a training set as an input, dividing the semantic label graph into four branches for coding, and obtaining four branch images; step 2, a generator decoding stage: splicing the four branch images generated in the encoding stage to generate a false image as input of discriminator training; 3, a discriminator training stage, splicing the semantic label graph in the trainingset with the real image of the training set and the false image generated by the generator on the channel dimension to serve as input of the discriminator; dividing the discriminator into two scaleswhich are respectively an original scale and a downsampled two-time scale; on each scale, inputting a downsampling convolution layer which continuously passes through four layers and finally passes through one layer of convolution, and outputting 0 or 1 at each position to serve as true or false of a prediction image, wherein namely 0 represents that the current position is predicted to be a falseimage, and 1 represents that the current position is predicted to be a true image.

The invention relates to the technical field of methyl p-hydroxybenzoate measurement, and discloses a method for measuring methyl p-hydroxybenzoate in a drug based on vortex oscillation. The method comprises the following steps of preparing a sample: grinding the sample which needs to be detected through an ultrasonic grinder, and carrying out magnetic sieving on powder; preparing an extracting agent: mixing n-hexane and diethyl ether according to a volume ratio of 1 : 9 to obtain the extracting agent; dissolving the sample: mixing and dissolving the sample powder subjected to the magnetic sieving and a methanol solution to obtain a solution A; carrying out vortex oscillation: putting the solution A and the extracting agent into two test tubes respectively, and placing the two test tubes on a vortex oscillator for carrying out vibration mixing; and carrying out filtering and separating: filtering the solution A subjected to the vortex oscillation to obtain filter residues and filtrate.According to the method, the extraction effect can be improved; the detection precision can be improved; the influence of metal impurities on a detection result can be eliminated; an extraction experiment does not need to be repeated; comparison of implementation results is facilitated; a detection error is reduced; and the working efficiency is improved.

The invention discloses a membrane extraction tank with movable separation boards. A structure with the movable separation board with sealing layers and tightening devices is arranged in the tank; themovable separation boards are fixed and sealed by the tightening devices, the extraction direction is enabled to be opposite to the membrane direction, and the flowing direction of extraction liquidis guided and changed, so that an extraction effect of the membrane is effectively improved, the extraction is more sufficient and the surface quality of the membrane is improved.

The invention relates to the technical field of extraction of residual oil, in particular to a petroleum residual oil solvent extracting device. The petroleum residual oil solvent extracting device comprises a supporting plate, compression mechanisms, a storage mechanism, a closing mechanism, a feeding hopper, a water draining tube, a circulating mechanism, a discharging mechanism, stirring mechanisms, a connecting mechanism and a sealing mechanism; the inside of the storage mechanism is symmetrically rotatably connected with the two stirring mechanisms; the rotating directions of the two stirring mechanisms are opposite; the residual oil in the storage mechanism is broken, so that the residual oil and an extracting agent are in contact fully, and the extracting efficiency is improved; thestorage mechanism communicates with the circulating mechanism, the circulating mechanism communicates with the compression mechanisms, the two compression mechanisms flush an extracting solution intothe storage mechanism through the circulating mechanism, therefore, the extracting solution moves in the two compression mechanisms and the storage mechanism back and forth, the residual oil and theextracting solution are in contact fully, and the extracting effect is improved; and the compression mechanisms move to suck the extracting solution in the storage mechanism through the circulating mechanism, so that the extracting solution is separated from the residual oil conveniently.

The invention discloses an alcohol oil extraction device in a dimethyl ether production system and an alcohol oil extraction method. A reaction product obtained by taking crude methanol as a raw material to prepare dimethyl ether enters a dimethyl ether rectifying tower; a kettle liquid buffer slot is formed in the flow of the rectified tower kettle liquid to a methanol vaporization tower; a valve controls the flow of the kettle liquid; a mining opening I is connected to the buffer slot in the upper part of a content gauge of the rectifying tower, and a mining opening II is connected with an atmospheric pressure buffer tank on the top of the buffer slot; dilute alkali lye is supplied to the buffer tank; an inverted U-shaped water seal is arranged at the outlet of the buffer tank, and connected with a methanol intermediate tank; an alcohol oil mining opening is formed in the upper part of the buffer tank. By adopting the alcohol oil extraction device and the alcohol oil extraction method, the target of continuously and automatically recovering alcohol oil in the dimethyl ether is achieved by an organic matter separation method. Thus, the quality of the dimethyl ether product is improved, and the dehydration catalyst is protected.

The present invention relates to techniques for processing hydrocarbon-containing gaseous mixtures, and in particular to the cryogenic separation of gas components, and may be used in the processing of oil well gas or natural gas. Technical results include reduced loss of target components and increased process efficiency.

The invention discloses a method for improving the detection accuracy and precision of the content of cinnamic acid in a Mailuoning injection intermediate extract.The method comprises the following steps: preparing a test solution of cinnamic acid in the intermediate extract of the Mailuoning injection, and preparing the test solution by the following specific steps: taking a sample of the intermediate extract of the Mailuoning injection, dissolving the sample in a water bath at the temperature of 50-80 DEG C in a heating manner, uniformly mixing by shaking, precisely measuring 0.5 mL of the sample, placing the abve in a 500mL measuring flask, dissolving in water, diluting to a scale, and uniformly shaking, so that the extract is more uniformly mixed by adopting a hot water dissolving method. The extract extraction rate is increased from 0.395 mg/mL to 1.719 mg/mL, and the extraction degree is increased by 335%. According to the invention, a preferable method for dissolving and preparing the test sample is determined, and the preparation time of the test sample solution is reduced from 4 hours before improvement to 1 hour at present, so that the preparation time of the test sample solution is greatly shortened, and the working efficiency is improved; and the RSD of a detection result is less than 2 percent.

The present invention relates to providing a simple and highly reproducible method for measuring the concentration of acetic acid in blood plasma by using a gas chromatography/mass spectrometry (GC/MS), and more specifically relates to a method for measuring the concentration of acetic acid in blood plasma by using a gas chromatography/mass spectrometry (GC/MS), which comprises extracting acetic acid in blood plasma with methyl-tert-butyl ether (MTBE).

The invention relates to a light-emitting diode chip with an inverted structure and a preparation method of the light-emitting diode chip. The light-emitting diode comprises an LED epitaxial wafer, an n electrode ohmic contact layer (1-05) and a p electrode ohmic contact layer (1-06), wherein the n electrode ohmic contact layer (1-05) and the p electrode ohmic contact layer (1-06) are arranged on the LED epitaxial wafer; a first transparent passivation layer (1-07) is arranged on the area, where the n electrode ohmic contact layer (1-05) and the p electrode ohmic contact layer (1-06) are not arranged, of the LED epitaxial wafer, and a micro-array structure (3-01) is etched on the first transparent passivation layer (1-07). A high-reflection insulating material film (3-02) is deposited on the first transparent passivation layer (1-07), and the thickness of the high-reflection insulating material film (3-02) is greater than the depth of the micro-array structure (3-01). The light extraction efficiency of the chip can be improved, so the effect of improving the brightness is achieved.