281results about How to "Speed up extraction" patented technology

The private and public keys of users, as encrypted with a symmetric algorithm by using individual user identifying keys are stored at a network server, indexed or addressable by user ID, and are sent to the user equipment only when needed. The user identifying keys are determined by hashing the users' respective passphrases or biometric information. After use, the private key and user identifying key are not retained at the user equipment. The encrypted private key is transmitted via the network to the user equipment along with a document to be approved by the user (in the case where the private key is used for digital signature) and, at the user equipment, the received encrypted private key is decrypted using a key determined at the user equipment by hashing either the user's passphrase, which is entered by the user, or the user's biometric information which is obtained by measurement or scanning the user. The received document is modified or merely reviewed, and a digital signature signifying the user's approval, is formed as a hash of the approved document encrypted using the user's private key. The digital signature and document are transmitted to the server, where verification takes place.

The invention discloses a cross-modal retrieval method based on adversarial learning and asymmetric hashing. The cross-modal retrieval method comprises the following steps: 1) selecting a cross-modaldata set and dividing the cross-modal data set into a training set and a test set; training a model, wherein the model comprises a loss module, a feature extraction unit and a Hash code learning unit,wherein the hash code learning unit comprises a hash code learning network and a shared multi-label binary matrix, and the loss module comprises the confrontation loss of the feature extraction unit,the ternary margin loss of the hash code learning unit, the cosine quantization loss and the asymmetric hash loss; 2) generating a binary hash code of each modal data in the cross-modal data set by using the trained optimal model; and 3) for a given query data, firstly generating a binary hash code, and then calculating a Hamming distance between the binary hash code of the query data and the binary hash code of the modal data in the cross-modal data set, which is different from the modal of the query data, so as to obtain a cross-modal data instance meeting the condition.

The invention discloses a reverse-conducting insulated-gate bipolar transistor (RC-IGBT) with a P floating layer current bolt, and belongs to the field of semiconductor power elements. A medium buried layer is led in between an N collector region and a P collector region of a traditional RC-IGBT, and the P floating layer current bolt is led into an N-type buffering layer above the medium buried layer. According to the RC-IGBT with the P floating layer current bolt, other parameters of an element are not affected, break-over voltage of a snapback is obviously lowered, a reverse recovery soft factor is improved, current is distributed uniformly, local over-heating phenomenon is avoided, and the reliability of the RC-IGBT is improved.

The invention relates to a photoelectric detector based on colloidal quantum dots and grapheme utilized as a photoelectrode and a manufacturing method thereof and belongs to the fields of photoelectric conversion, new energy materials and technologies. The method comprises the following steps: preparing a graphene film on a clean ITO (indium tin oxide) glass surface by an electrophoresis method, and then preparing a layer of colloidal quantum-dot film on the graphene film; spinning an organic polymer active layer on the photoelectrode; and finally evaporating the photoelectrode to obtain a photoelectric detector. The method for manufacturing the structure of the photoelectric detector provided by the invention is simple and low-priced; spectral bands induced by the detector can be adjusted according to the compositions of the polymers and the spectral band range of the incident sunlight absorbed by the polymers; PbS colloidal quantum dots with different particle sizes can absorb near-infrared light with different wavelengths and different near-infrared spectrums in the incident sunlight can be absorbed by the photoelectric detector with the colloidal quantum dots; and the quantum dots dotted on the graphene film can interact with the graphene, so that photon-generated carriers can be effectively separated and rapidly transmitted, and the photoelectric detection sensitivity is improved.

The embodiment of the invention discloses a method, a system and a device for extracting structured data and a storage medium. The method comprises the following steps: recognizing input text based onan on-line recognition model by an on-line recognition subsystem to output structured data; obtaining customized data of the user through a customized interface of an offline marking subsystem, and adjusting an offline identification model according to the customized data; updating an on-line identification model of the off-line identification subsystem according to the off-line identification model by the off-line identification subsystem, wherein the on-line identification model corresponds to the off-line identification model. The embodiment of the invention can update the identification model according to the customized data of the user, reduce the difficulty of customizing the rules and the difficulty of modifying the rules, and reduce the realization cost of text extraction and structuring.

A signal processing apparatus scans a beam of elastic waves into an object to be examined, acquires received waveform data of a plurality of scan lines, and performs signal processing to form a tomographic image of said object to be examined from the received waveform data of the plurality of scan lines. The signal processing apparatus includes a scan line correlation calculation part (009) that calculates a correlation value of received waveform data between a first scan line and a second scan line that has a prescribed correlation with the first scan line, for a plurality of positions on the scan lines, and a correlation change position extraction part (010) that extracts, from among the plurality of positions on said scan lines, a position at which the correlation value becomes a value different from a prescribed value as a position at which a unique region can exist.

The invention discloses application of an amide compound, an extraction composition containing the amide compound and an extraction system. The extraction composition contains N,N-dicyclohexyl-butyramide and a diluents, but does not contain neutral phosphorus oxide as shown in the formula A. According to the amide compound or the extraction composition containing the amide compound, the extractionand back-extraction of lithium from Lithium-containing brine can be performed, the Lithium extraction rate of Lithium-containing brine is above 83.89%, and the distribution coefficient of Lithium-Magnesium is above 521; and when back-extraction of lithium is performed by the adoption of HCl, the back-extraction rate is above 91.74%, the corrosion to equipment is small, and the application of theamide compound, the extraction composition and the extraction system are suitable for industrial operation requirements (Please see the formula A in the specification.).

The invention discloses an extraction composition, an extraction system and application thereof. The extraction composition disclosed by the invention comprises an extraction agent and a neutral phosphorus oxide compound of formula A as shown in the description, wherein the extraction agent comprises N,N-di(2-ethylhexyl) acetamide and N,N-dihexyl-2-mehtyl propanamide. As a mixture of amide compounds and the neutral phosphorus oxide compound of specific structures is adopted as the extraction agent, the extraction rate for Li of lithium-containing brine is 80% or greater, for example, 83.41-93.5%; the lithium-magnesium allocation coefficient is as high as 600 or greater, for example, 625-1110; when lithium is reextracted with HCl, the reextraction rate is 85% or greater, for example, 87.55-91.32%, the extraction and reextraction properties for extracting lithium from the lithium-containing brine are greatly improved, the cost is reduced, and industrial production can be relatively well met.

The invention discloses a method for efficiently repairing composite polluted soil by an artificial ecological system. Scientific allocation is conducted according to different latitudes and longitudes, different temperature and humidity and different coastal pollution types. The ecological system of trees, shrubs, vines, herbaceous plants and benthonic animals is artificially constructed, and a unique sediment microbial community is naturally formed, so that heavy metal and organic pollutants in the polluted soil are quickly and effectively adsorbed and transformed by microorganism and are adsorbed and extracted by plants, and the effect of efficient purifying of the soil is achieved by artificially harvesting aboveground vegetation. According to the method for efficiently repairing the composite polluted soil by the artificial ecological system, the ecological system suitable for any soil pollution repairing can be derived in the case of scientific species configuration and the method has good ecological benefits and economic value. The maximization of the ecological benefits and repairing efficiency is ensured, meanwhile, repairing cost is reduced, and certain economic benefits can be produced.

The invention relates to an ectopic-in-situ combined bioremediation method of high-concentration petroleum contaminated soil, and belongs to the technical field of contaminated soil remediation. The ectopic-in-situ combined bioremediation method comprises the following steps: firstly, high-concentration petroleum contaminated soil is subjected to ectopic biological piling, so that the concentration of petroleum hydrocarbon in soil is reduced greatly; then a certain amount of the piled materials are returned to the field, so that the concentration of petroleum hydrocarbon in soil after field return is less than 2000mg.kg<1-> to meet the in-situ remediation requirement; finally, the remediation requirement is achieved after in-situ remediation. The ectopic-in-situ combined bioremediation method is combined skillfully so as to achieve the economical and efficient remediation effect.

The invention discloses a fast cold brew coffee and a preparation method thereof. The cold brew coffee comprises coffee powder obtained by grinding roasted coffee beans with a medium or medium light roasting degree, and water; the mass ratio of the coffee powder to the water is 1:(10-14). The preparation method comprises the steps of mixing the ground coffee powder with the water sufficiently; performing pressurized immersion extraction immediately after mixing, wherein the immersion temperature is 5-10 DEG C, the pressurization pressure is 300-500 MPa, and the immersion time is 10-25 minutes;performing filtration with filter paper quickly after immersion to obtain coffee liquid, namely the cold brew coffee. By adjusting the appropriate coffee grinding degree and powder-water ratio and performing pressurized ultra-high immersion extraction of the coffee under the low temperature condition, the extraction of coffee flavor components is accelerated; by controlling the pressurization pressure and time, the dissolution of undesirable flavor components is reduced; the coffee has the strong aroma of caramel and nuts and a fruit flavor, the sweetness is obvious, the sour taste is refreshing and agreeable, the mellowness is moderate, and no obvious bitter aftertaste is generated.

The invention relates to the field of computer software, in particular to a transformation method for an extract, transform and load (ETL) operation relation graph and an implementation system thereof. The method comprises the following steps: requesting task relation data related to the current task node from a background, wherein the current task node is taken as a center; receiving the request by the background, finding logic relation related to the current task node and storing into the corresponding task relation data; returning the task relation data to a foreground; receiving the task relation data by the foreground and drawing the task relation data into a corresponding relation graph; and selecting any one task node as the next current task node and repeating the steps 1 to 4 until all the task nodes are subjected to operation of the steps 1 to 4. A user can observe logic relation graphs of different hierarchies and different angles according to the own wish, so that the work efficiency is improved, fault during configuration is reduced and construction of the ETL and a data warehouse is accelerated.

The invention discloses a segmented resistance type IGBT driving circuit, which is characterized in that a segmented resistor driving circuit comprises a plurality of segmented resistors which are connected in series, both ends of each segmented resistors are connected with a bypass MOS transistor in parallel; each bypass MOS transistor and a driving push-pull circuit are connected with a driving controller; and an IGBT gate clamping circuit comprises an IGBT gate voltage-stabilized clamping circuit and an IGBT gate power supply clamping circuit. The invention further discloses a control method of the segmented resistance type IGBT driving circuit, which is characterized in that a pulse rising edge and a falling edge are driven at the gate, and the size of the gate driving resistance is changed through switching of the bypass MOS transistors. The segmented resistance type IGBT driving circuit and the control method thereof can achieve the purposes of reducing the switching loss of an IGBT device and improving the application frequency of the device while ensuring suppression for surge and gate oscillation.

The invention belongs to the technical field of plant biology and in particular relates to a method for extracting paeonol from paeonia suffruticosa roots. The method comprises the steps of picking, complex enzyme liquid preparation, ultrasonic treatment, centrifugal treatment and reduced pressure distillation. The method has the beneficial effects that enzyme treatment is firstly carried out on paeonia suffruticosa roots and barks at 30 DEG C for 20 minutes, so that the cell walls of the paeonia suffruticosa roots and barks and the interstitial structures of the cell walls can suffer from changes such as local loosening, swelling, collapse and the like; short-time ultrasonic treatment is then carried out on the paeonia suffruticosa roots and barks, ultrasonic waves generate strong impact waves and microjet inside the liquid, and the powerful impact flow can effectively reduce and eliminate the blocking layer between a solvent and an aqueous phase, thus increasing the mass transfer rate; besides, the impact flow generates a physical shear force towards cell tissues, so that the cell tissues deform, fracture and release inclusions, the cell walls and the interstitial structures of the cell walls suffer from local loosening and swelling, the extraction process of paeonol in the cells is accelerated, and the effect of getting twofold results with half the effort is achieved.

The invention relates to a method for extracting peony essential oil from peonies. The method comprises the following steps that step 1, the peonies are picked, forced air drying is conducted on the peonies, and the dried peonies are taken out and ground; step 2, a cellulase water solution and a pectinase water solution are mixed, acetum is added, and therefore a phosphoesterases complex solution is obtained; step 3, the ground peonies are placed in a triangular flask, the phosphoesterases complex solution is added, standing is conducted, ultrasonic treatment is conducted, and standing is conducted; step 4, the obtained solution in the step 3 is added to a petroleum ether ethanol solution, backflow is conducted, digestion is conducted at the indoor temperature, and the obtained solution is transferred into a rotary evaporator for vacuum concentration. According to the method, enzyme treatment is firstly conducted on the peonies so that local changes of loosening, expansion, crashing and the like are generated in the cell walls of the peonies and the mesenchyme structures of the cell walls; then, ultrasonic treatment is conducted on the peonies for a short time, and therefore the extraction rate of the essential oil from the cells of the peonies is greatly improved.

The present invention relates to a vanadium pentoxide preparation method, and provides a method for preparing vanadium pentoxide through composite extraction. The method comprises: (1) leaching; (2) reducing; (3) extracting, wherein a vanadium-containing material liquid is extracted with a composite extractant prepared from a phosphate organic matter and a modifier to prepare a vanadium-containing supported organic phase; (4) carrying out back extraction, wherein the supported organic phase is subjected to back extraction with sulfuric acid or a vanadium-containing sulfuric acid solution to prepare a vanadium-rich liquid; (5) removing acid, wherein the excess acid in the vanadium-rich liquid is extracted; (6) precipitating vanadium; and (7) calcining. According to the present invention, the vanadium is extracted with the composite extractant having strong extraction ability and strong back extraction ability, such that the vanadium extraction rate and the vanadium purity can be improved so as to improve the yield and the product of the vanadium pentoxide product, and the alkali consumption can be reduced so as to reduce the production cost.

The invention discloses a method for determining PPCPs (Pharmaceutical and Personal Care Products) in water by an LPME (Liquid-phase Micro Extraction) technology based on ionic liquid, wherein green solvent ion liquid takes the place of the traditional organic solvent, the PPCPs in environmental samples are extracted and separated by utilizing a single drop liquid phase micro extraction technology, and then the samples are detected by the high-performance liquid chromatography. The invention has the characteristics of small environmental pollution, good extraction effect, simple operation, low cost, easy combination with a chromatogram system and the like.

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 calendula yellow pigment extraction method; the calendula or dry calendula granules are used as raw material, calendula paste is extracted by ethanol used as extractant, calendula yellow pigment which mainly contains lutein ester is extracted by a supercritical carbon dioxide extractor for paste by taking kieselguhr as dispersing agents, the extracted residue is eluted by the ethanol, and the eluent is concentrated and dried to obtain the calendula yellow pigment which mainly contains quercitrin patuletin.

The invention discloses a method for efficiently repairing a contaminated wetland with artificial ecosystems. Scientific configuration is performed according to different longitudes and latitudes, different temperatures and humidity and different coastal contamination types, the arbor, tree and shrub, herbaceous plant and benthonic animal ecosystems are established artificially, a particular sediment microorganism community is formed naturally, and heavy metal and organic pollutants in the contaminated wetland are rapidly and effectively absorbed and converted by microorganisms and adsorbed and extracted by plants. Maximization of ecological benefits and repairing efficiency is guaranteed while the repairing cost is greatly lowered, and certain economic benefits can be generated. The ecological niche difference of the overground part is fully utilized, the vertical space utilization rate is maximized, the underground space root earth contact area is maximized in cooperation with the rhizospheric microorganisms and the benthonic animals, and a new thought for ecological restoration is provided.