53results about How to "Good quality extract" patented technology

The present invention discloses an instantaneous elasticity imaging code detection method and a system. The method comprises the steps: an instantaneous low-frequency signal sent by a signal generator is subjected to power amplification to drive an electromagnetic vibrator and motivate the generation of an instantaneous shear wave inside a medium; modulating the coding of an ultrasonic pulse signal, detecting and tracking the vibration signal of the instantaneous shear wave based on the coded excitation technique to obtain a coded ultrasonic echo signal; amplifying and sampling the received coded ultrasonic echo signal to obtain coded detection echo discrete data; decoding according to the digital pulse compression technique to obtain a vibration displacement signal generated during the propagating process of the shear wave in a to-be-detected medium; according to the extracted displacement signal, calculating the speed of the instantaneous shear wave and the elastic modulus of the to-be-detected medium; and outputting the speed of the instantaneous shear wave and the elastic modulus of the to-be-detected medium. According to the technical scheme of the invention, the average emission energy of signals is improved, and the signal-to-noise ratio of echo signals is increased. Meanwhile, the system detection sensitivity and the ultrasonic penetration capability are improved. Moreover, the vibration signal extraction quality of the shear wave is improved, and the depth-detection penetrating power of the instantaneous elasticity imaging process is enhanced.

The invention relates to a monitoring-video-oriented masked face detection method. The method comprises the steps of: carrying out video frame skipping processing strategies on the basis of simple background difference value operation; realizing moving head and shoulder region detection on the basis of an improved background difference method; and detecting a masked face on the basis of a two-stage Haar classifier. By carrying out the video frame skipping processing strategies on the basis of the simple background difference value operation, the processing range is effectively reduced; the system overhead is reduced; and the processing efficiency is improved. A region with a head and shoulder image is judged to be an effective moving region; the condition that the background is detected to be a moving object by mistake is effectively reduced; by combining the frame skipping strategies, the background is only updated only when the existence of the head and shoulder moving region is detected; and the processing speed can be further accelerated, and the moving target extraction quality of the background difference method can be further improved. According to the Haar linear features of the common masked face, the training and the detection of a masked target are carried out on the basis of a binary image; the gray level distribution rules of training samples and a target to be detected can be intensified and emphasized; and an effect better than that of a pure gray level image is obtained.

The invention relates to a surveillance video oriented bearded face detection method. The method mainly used for processing the surveillance videos and comprises the following steps: reading a video file into a computer, decoding, and obtaining a region with human upper body moving targets by using an improved background subtraction method and a human upper body HOG classifier; then, aiming at the upper one third part of the human upper body moving region, detecting the possible face region in the part by adopting a face Haar classifier, and intercepting the lower half part of the face region as a beard detection region; finally, carrying out scale normalization for the region, then calculating the horizontal texture complexity, and judging whether beards exist or not. The method utilizes the motion feature and the morphological feature of the surveillance video oriented bearded faces, can reliably detect the bearded face targets in the walking and running front upright bodies.

The invention discloses a traditional Chinese medicine extracting and filtering device which comprises a reaction kettle and an inner container. The inner container is arranged in an inner cavity of the reaction kettle, a heating cavity is formed between the reaction kettle and the inner container, the top end of one side face of the heating cavity is penetratingly connected with an air incoming pipe, an air shift box is arranged at the top wall of an inner cavity of the inner container, a stirring rod is arranged in the inner cavity of the inner container, the top end of the stirring rod penetrates the top walls of the air shift box and the reaction kettle and is fixedly connected on a motor shaft of a motor, a plurality of stirring pipes are uniformly arranged on the stirring rod, the bottom end of the inner container is penetratingly connected with an agent discharging pipe, the other end of the agent discharging pipe penetrates the bottom wall of the reaction kettle and is penetratingly connected with a filter, and a plurality of supporting legs are arranged at the bottom end of the reaction kettle uniformly. By arranging the heating cavity to wrap the whole inner container to enable the outside of the same to be heated uniformly, lowering of quality of medicine liquid due to charring of traditional Chinese medicine caused by local overheating can be prevented effectively; the medicine liquid is heated from the inside of the same through the stirring rod and the stirring pipes, so that heating effect of the medicine liquid is further improved, and extraction speed and quality of traditional Chinese medicine are improved substantially.

The invention provides a method and an apparatus for extracting a keyword from a single document. According to an embodiment, the apparatus for extracting the keyword from the single document comprises a key sentence extraction unit for extracting a key sentence from the single document, and a keyword extraction unit for extracting the keyword from the key sentence.

The invention relates to new application of a hydroquinone compound, particularly application of a hydroquinone compound (shikonin) in preparing medicines for resisting hepatitis C virus (HCV). The hydroquinone compound (shikonin) has obvious activity for resisting HCV, and the selection index is up to 43.56; and thus, the hydroquinone compound (shikonin) can be used as a lead compound for treating hepatitis C. The molecular formula of the hydroquinone compound (shikonin) is C16H16O5, and the chemical structural formula is disclosed in the specification.

The invention discloses a peony flower extract as well as a preparation method and application thereof, and belongs to the technical field of plant extraction. The preparation method of the paeonia lactiflora extract comprises the following steps: (1) crushing dried paeonia lactiflora buds, adding an ethanol aqueous solution with the volume ratio of 60%-90% according to the solid-liquid ratio of 1g: (10-30) mL, and leaching at the temperature of 30-60 DEG C to obtain a leaching solution; and (2) removing ethanol in the leaching solution to obtain a concentrated solution, diluting the concentrated solution with water until the pH value is 5-7, and then drying to obtain the peony flower extract. According to the method, main components in the paeonia lactiflora are defined, efficient extraction of four active components in the paeonia lactiflora is achieved, the process is easy and convenient to operate, and the obtained paeonia lactiflora extract is good in quality and stable in quality. The peony flower extract prepared by the invention has the effects of resisting oxidation, resisting aging, blocking sun, whitening, resisting wrinkles and the like, and provides powerful support for the application of the peony flower extract in the aspects of food and cosmetics.

The invention discloses a hickory sterol extractive. The hickory sterol extractive comprises 10 to 50% by weight of total sterol; the total sterol comprises 70 to 95% by weight of beta-sitosterol, fucosterol, campesterol and stigmasterol, wherein the weight ratio of the beta-sitosterol to the fucosterol to the campesterol to the stigmasterol is (70-95): (1-10): (2-12): (1-15). The invention also provides a preparation method of the hickory sterol extractive. The hickory sterol extractive is applicable to the preparation of medicines for reducing blood fat, daily cosmetics, or health care products.

The invention discloses a preparation method of a natural medical collagen sponge made of sharkskin and belongs to the technical field of biological medical material preparation. The preparation method includes: removing the blood of the sharkskin, performing quick-freezing at minus 20 DEG C, separating the black skin layer and a collagen layer, removing impurity protein and lipid, and crushing with a crusher; using an acetic acid solution to suspend the processed collagen layer, adding protease, and slowly stirring for enzymolysis to obtain an unmodified collagen solution; separating the obtained collagen solution to obtain supernate and precipitates, subjecting the supernate to salting out, redissolving the precipitates, and using a dialysis membrane to perform dialysis on the redissolved precipitates; subjecting the obtained dialysis solution to crosslinking and freeze drying to obtain a collagen sponge, and packaging to obtain the medical collagen sponge. The preparation method hasthe advantages that aquatic product processing waste such as the sharkskin is sufficiently utilized, the preparation method is simple in production process, high in operability and low in cost, and the prepared collagen sponge is high in purity and widely applicable to the fields such as medical biological materials.

The invention discloses a technology for extracting antibacterial ingredients in propolis, comprising the following steps: taking the propolis raw material, removing impurities, and freezing for 13-15h; adding a crushing medium which accounts for 3-10 wt% of the weight of the propolis raw material into the frozen propolis raw material and crushing, and sieving through a sieve of 40-60 meshes to obtain fine powder; mixing the crushed and screened propolis fine powder with a mixed liquor of water and compound enzyme at a certain ratio, laying the mixed raw materials on a biological enzymolysisbed and carrying out a biological enzymolysis reaction; using ethanol water as a solvent and carrying out microwave extraction on the mixed raw materials obtained after the enzymolysis, filtering, carrying out vacuum concentration on a filtrate to prepare a propolis functional ingredient, and simultaneously recovering the ethanol water while vacuum concentration. Weight ratio of propolis to the ethanol water is 1: 8-15; the microwave treatment time is 2-8 min; and microwave power is 800w-1000w. Problems of existing propolis functional ingredients extraction technologies, such as slow extraction speed and poor purification effect, are solved.

The invention belongs to the technical field of crops, and more specifically relates to a high-efficiency extraction method of peanut leaf DNA. The high-efficiency extraction method comprises following steps: peanut leaf samples are collected; CTAB solution is added into the collected peanut leaf samples in two steps; samples are smashed; the smashed peanut leaf samples are introduced into a waterbath pot for a certain time period of water bath; a chloroform/isoamyl alcohol solution is adopted for a first time of extraction; a phenol/chloroform/isoamyl alcohol solution is adopted for a secondtime of extraction; after extraction, an obtained supernate is collected, precipitation of DNA is carried out, and obtained DNA is washed and stored. The high-efficiency extraction method is capableof realizing high efficiency extraction of peanut leaf DNA at room temperature, and is especially suitable for extraction of DNA of large amounts of samples; extraction cost is relatively; extractiontime is short; batch extraction of a large amount of DNA can be realized; the quality of extracted DNA is basically the same with that of DNA extracted using DNA kits. Operation of the high-efficiencyextraction method is simple, and extraction cost is reduced by half or more of that of extraction using kits.

The invention discloses an image processing method based on near-infrared imaging and a terminal. The image processing method comprises the steps: respectively obtaining convolution kernels in different directions, the dimension of each convolution kernel being n, and the number of directions being m; obtaining an interested matrix from the original grayscale image in a traversal mode, wherein thedimension of the interested matrix is n; performing convolution operation on the interested matrix and convolution kernels in different directions to obtain m new element matrixes; taking the maximumvalue of the new element values with the same coordinates in the m new element matrixes to obtain a preprocessed image matrix; and performing color assignment on the preprocessed image matrix to obtain a final image. The image processing method performs convolution operation on the original grayscale image and a convolution kernel to obtain a pre-processed image with enhanced blood vessels ratherthan inhibited blood vessels, wherein the pre-processed image still well reserves relative depth information of the blood vessels; and the image processing method performs color assignment on the preprocessed image so that the preprocessed image is enabled to have better human eye identification degree.

The invention discloses a preparation method of a mild and non-irritating saponin composition, the preparation method comprises the following steps: (1) sample pretreatment: freezing and crushing Chinese honeylocust peel to obtain Chinese honeylocust peel powder; (2) primary extraction: stirring and centrifuging the Chinese honeylocust fruit tablet powder and distilled water twice to obtain mixed supernate; (3) clarification: adding a flocculant and an adsorption aid into the mixed supernatant, stirring and centrifuging to obtain a precipitate and a clarified solution; (4) decoloring: adding hydroxide, inorganic acid salt, inorganic acid and distilled water into the precipitate, stirring and filtering to obtain filtrate, and mixing the filtrate with the clear liquid; and (5) refining: purifying the clarified liquid through resin, then removing impurities from the clarified liquid by using an electrodialysis device, and then concentrating by using a plate type falling film evaporator to obtain the composition. The method provided by the invention has a good saponin extract extraction effect, and the extracted saponin composition has excellent stability, low irritation and appropriate surface tension, is suitable for popularization in the field of daily chemical products, and has a wide development prospect.

The invention discloses zanthoxylum armatum oil production equipment which comprises a barrel body, a top cover, a stirring device, a heater and a generator, the barrel body is a pressure barrel; the top cover is hermetically connected with the barrel body; an oil inlet communicated with the interior of the barrel body is formed in the top cover; the heater and the generator are arranged in the top cover through a bracket; and the stirring device and the oil outlet are respectively arranged at the bottom of the barrel body. The zanthoxylum armatum oil is extracted through the device, the whole extraction process is in a closed pressure environment, no pollution is caused, and the treatment energy consumption is low. The zanthoxylum armatum is subjected to dual stimulation of the microwave generator and the ultrasonic generator in the extraction process of the hot oil, the oil temperature is regulated and controlled through the heater, the extraction efficiency is high, and the extraction quality is good. After the zanthoxylum armatum oil is extracted, the residual oil in the barrel is centrifuged to achieve full extraction. After zanthoxylum armatum oil extraction is completed, a pull ring on the inner barrel is buckled through a travelling crane, residues in the inner barrel are cleaned, the next round of production is conducted, design is reasonable, and operation is convenient and fast.

The invention discloses a device and a method for extracting total DNA of matrix-attached microorganisms, and belongs to the technical field of molecular biology, the device comprises a pressure control flushing device, a negative pressure device and a collecting device, the flushing water outlet pressure is controlled through the pressure control flushing device; suspension generated by flushingthe matrix through a flushing pipeline is collected to the collecting device through the negative pressure pipeline; the invention also discloses an extraction method of DNA. The negative pressure device is matched to collect samples; the method overcomes the problems of difficult sampling and incomplete sampling of microbial samples attached to a matrix in the prior art, significantly improves the representativeness, extraction efficiency and quality of microbial genome DNA attached to the matrix, has bright and clear strips, is basically non-degradable, and has good extraction efficiency ondifficult-to-extract microorganisms, such as fungi and the like.