397results about How to "Significant application value" patented technology

The invention discloses a man-machine interactive system and a real-time gesture tracking processing method for the same. The method comprises the following steps of: obtaining image information of user side, executing gesture detection by a gesture detection unit to finish separation of a gesture and a background, and automatically determining a smaller rectangular frame which surrounds the hand as a region of interest in the image information through a vision algorithm; calculating the hand profile state of each frame in a video sequence by a gesture tracking unit; executing validity check on hand actions according to the calculated hand profile state, and determining the gesture action finished by the user; and generating a corresponding gesture action control instruction according to the determined gesture action, and making corresponding feedbacks by a three-dimensional user interface according to the gesture action control instruction. In the system and the method, all or part of gesture actions of the user are sensed so as to finish accurate tracking on the gesture, thus, a real-time robust solution is provided for an effective gesture man-machine interface port based on a common vision sensor.

The invention discloses a mine finding method based on a cube forecasting model with three-dimensional modeling, characterised in that having following steps: (1) collecting data; (2) establishing a database; (3) establishing a three-dimensional mine model; (4) establishing a cube forecasting model; (5) validating a forecasting result. The invention can find a mine in a large scale study region where a twodimensional mine finding method can't realized by using the method of three-dimensional modeling during a mine finding process, the obtained forecasting result can reflect an actual situation more factually. With the cube forecasting model with three-dimensional modeling, various three-dimensional space data can be used to establish a three-dimensional geological model, a three-dimensional mine model and a three-dimensional mine finding model of the study region, the forecasting result is qualified in position, quantity and probability. Accordingly, the ''cube forecasting model'' mine finding method realizes a development from the two-dimensional mine finding to the three-dimensional mine finding, has important theory value and application value.

The invention discloses graphene aerogel and a preparation method thereof. The method comprises the following steps: (1) uniformly mixing graphene oxide dispersion liquid with an amine water-soluble compound to obtain graphene oxide mixed liquid, wherein the amine water-soluble compound is selected from one or more of diethylamine, ethidene diamine, propane diamine, butane diamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine, allylamine polymer and N,N'-bis(2-aminoethyl)-1,3-propane diamine; (2) irradiating the graphene oxide mixed liquid by high-energy rays under the anaerobic condition to obtain amino-modified graphene aerogel; (3) performing freeze-drying or supercritical CO2 drying to obtain the graphene aerogel. The graphene aerogel adopts a porous and macroporous structure, is relatively uniform in structure, and can be used for adsorbing an organic solvent; moreover, the preparation method is simple and environment-friendly.

The invention provides an application of bacteroides fragilis ZY-312 to prevention and/or treatment of inflammatory bowel diseases (IBDs), including an application of bacteroides fragilis ZY-312 to preparation of medicines, medicine compositions, food, health care products, food additives, and the like for preventing and/or treating IBDs. In vivo and in vitro related experiments confirm that bacteroides fragilis ZY-312 has excellent resistance to the IBD, including ulcerative colitis or the Crohn's disease, does not have toxic or side effect and can be permanently and effectively applied to preparation of the medicines, medicine compositions, food, health care products or food additives for preventing and/or treating IBDs. The medicines, medicine compositions, food, health care products or food additives can be used for preventing and treating IBDs and have important application values.

The invention discloses a prediction method for distribution of each heavy metal in heavy metal polluted flow on a soil-water interface of a non-ferrous metal orefield. The technical points are as follows: the measured data of a sampling site on the soil-water interface of the non-ferrous metal orefield is taken a basis, a BP (back propagation) prediction model for distribution of each heavy metal in heavy metal polluted flow on the soil-water interface of the non-ferrous metal orefield based on GIS (geographic information system) technology support is constructed by utilizing a geostatistic method and combining the GIS technology in virtue of BP neural network technology principle to predict the contents, spatial variability and distribution of each heavy metal in the metal polluted flow on the soil-water interface, and the spatial distribution graph of heavy metals on the soil-water interface is drawn by ArcGIS software. According to the invention, theoretical basis and scientific reference are provided for ecology risk evaluation, control, treatment, restoration and the like of heavy metal pollution of the non-ferrous metal orefield, the accord development of the orefield and the mining cities is promoted, and great application value and social benefits are achieved.

The invention discloses a test-piece support for a corrosion test. The test-piece support is composed of a circular ring, support rods, piece hanging rods and nuts. The test-piece support is characterized in that uniformly distributed positioning holes are arranged in the bottom of the circular ring; the support rods are inserted into the positioning holes to be connected with the circular ring for fixing by the nuts; uniformly distributed thread grooves are arranged in the side of the circular ring; one ends of the piece hanging rods are embedded in the thread grooves and the other ends of the piece hanging rods are used for hanging an corrosion test test-piece; and the other ends of the piece hanging rods are fixed by positioning pieces after hanging the test-piece. The test-piece support for the corrosion test is convenient to adjust and use, simple in structure, efficient in corrosion evaluation performance and favourable in insulativity and corrosion resistance.

The invention relates to a displacement estimation method of a bearing-free synchronous reluctance motor, comprising the following steps: constructing a band-pass filter BPF: sending coordinate- transformed suspension winding three-phase detection current into the band-pass filter BPF; extracting suspension winding high frequency induction current ix_i and iy_i through the BPF; then constructing a multiplication demodulator: taking the ix_i and iy_i as a first input signal of the multiplication demodulator; constructing a phase shifter, taking pulsation high-frequency voltage signal ud_i having gone through phase shift as a second input signal of the multiplication demodulator; obtaining I' and I signal after demodulation computation is carried out on the two input signals by the multiplication demodulator; then filtering high-frequency component of the I' and I' signal by a low-pass filter LPF, finally obtaining current components comprising rator radial displacement; afterwards multiplying corresponding scale factor to obtain estimated value of the radial displacement of a controller electric machine rator. With the method and the device for controlling the displacement-free sensor, the displacement sensor is not needed and a DSP is adopted to control an electrical machine with the assistance of a software.

The invention discloses a distribution prediction method of Mn and associated heavy metals, such as Cu, Ni, Zn, Pb, Cd and the like, in a soil-water interface contaminated flow in a manganese mine area. On the basis of runoff water sample actual detection data of a sampling point of a soil-water interface in the manganese mine area and along-river distribution status of heavy metal content in sediments, a BP prediction model of the manganese and associated heavy metal distribution in the soil-water interface contaminated flow in the manganese mine area is constructed on the basis of a GIS technology through a geostatistic method with the GIS technology with a BP neural network introduced. The predict model has excellent fault-tolerant capability and nonlinear approximating mapping capability. A predict result of contents and spatial distribution of the manganese and associated heavy metal of the soil-water interface contaminated flow in manganese mine area is more objective and accurate.

The invention discloses a bearing-free synchronous reluctance motor rotor displacement soft measurement method, which comprises the following steps of: first establishing a back electromotive force model of a suspension winding of a motor, namely, performing coordinate transformation on three-phase detection current and voltage of the suspension winding, transmitting the transformed detection current and voltage into the back electromotive force model to generate back electromotive forces ealpha2 and ebeta2 of a stator; then constructing an expanded flux linkage observer of the suspension winding, namely, acquiring flux linkage observed values Psix and Psiy by taking the back electromotive forces as input signals of the expanded flux linkage observer; and finally constructing an expanded displacement observer, namely, performing the coordinate transformation on the three-phase detection current of a torque winding and the suspension winding by taking the flux linkage observed values Psix and Psiy as a first input signal of the expanded displacement observer, and finally acquiring the rotor displacement observed values alpha and beta under biphase stationary coordinates by taking the transformed detection current as second and third input signals of the expanded displacement observer. A bearing-free synchronous reluctance motor suspension system constructed by the method saves a displacement sensor, can realize a rotor displacement soft measurement technology and the high-speed and stable suspension running of a controlled motor, and has the advantages of simple structure, easily realized algorithm, quick dynamic response and the like.

The invention discloses a diamond-like carbon composite molybdenum disulfide nano multilayer film and a method for preparing the same. A double-target magnetron sputtering technology is adopted to alternatively deposit diamond-like carbon layers and molybdenum disulfide layers on a stainless steel base, so that the diamond-like carbon composite molybdenum disulfide nano multilayer film is obtained, wherein the thickness of a single diamond-like carbon layer is between 10 and 100 nanometers, the thickness of a single molybdenum disulfide layer is between 10 and 100 nanometers, and the total thickness of the diamond-like carbon composite molybdenum disulfide nano multilayer film is between 1.5 and 6 micrometers. By the prepared nano multilayer film, the wearing life defect and the problems of friction coefficient environment sensitivity of the molybdenum disulfide layer are improved, moreover, the problems of large brittleness, poor toughness and the like of a hard diamond-like carbon film are solved, so that the wear rate of the nano multilayer film in high vacuum environments is reduced by 1-2 orders of magnitude compared with the wear rate of a conventional molybdenum disulfide or diamond-like carbon film, and the perfect matching of ultralow friction and high hardness and toughness is realized.

A process for regenerating the used water glass sand used for metallic casting includes such steps as breaking, adding water, freezing at -1¿D-60 deg.C, dry regeneration while dusting and de-moistening.

The invention relates to a preparation method for a Cr2O3 or NiO porous film material using WO3 as a base material and a method for manufacturing an air-sensitive sensor. A WO3-Cr2O3 or WO3-NiO sol material is prepared by using chemical pure tungstic acid H2WO4 and analytical pure Cr(NO3)3.9H2O or Ni(NO3)2.6H2O as raw materials, 2mol/L of citric acid as a complexing agent, 30 percent of hydrogen peroxide (H2O2) as a dispersing agent and urea as a pore-forming agent. A porous film type air-sensitive sensor manufactured by a sol-gel method has the characteristics of high selectivity, high sensitivity, short response-recovery time, high stability and the like. By the methods, the sensitivity of low-concentration specific gas can be detected; and the methods are particularly suitable for the fields of breath detection, food quality detection, environment detection and the like, have obvious research and application value, have the characteristics of low energy consumption, low cost, smallvolume and the like and are easy to operate.

The invention discloses engineered yeasts producing glucose oxidase and a construction method and use thereof, and belongs to the technical field of genetic engineering. The glucose oxidase(GOD) gene of aspergillus niger is cloned and bonded to a pichia pastoris expression vector pGAPZalpha by recombination DNA technology, the Pichia pastoris X33 is transformed, and finally, the recombinant pichia pastoris X33-pGAPZalpha-GOD producing high-activity glucose oxidase is separated and identified, and the collection number of the recombinant pichia pastoris is CCTCC NO.M2012267. The activity of the glucose oxidase expressed by the strain in shake flask is 23U/mL, which is nearly 11 times higher than that of wild fungi. The engineered yeasts provide a good basis for the mass production of glucose oxidase and the use of the glucose oxidase in starch as a food additive.

The invention relates to the field of image registration, in particular to a visible light image registration method based on salient region. The method comprises: (1) loading an image; (2) extracting the salient region of the image; (3) calculating the region feature describer for the extracted salient region and performing salient region match according to the similarity of the region feature describer; (4) performing local rigid registration to the salient region initially matched in step (3); and (5) adopting the center of the salient region after local rigid registration as a control point to perform overall quadratic polynomial transformation registration. The invention is an automatic image registration method characterized in fastness, accuracy and robustness, and has critical application value in image registration.

The present invention belongs to a preparation process of Y-containing spherical nickel hydroxide in the field of chemical material preparation. Through coprecipitation process, solid solution of hydroxide of Y and Ni is formed and prepared into Y-containing spherical nickel hydroxide; or through chemical precipitation process, one layer of ytterbium hydroxide is coated to the surface of spherical ytterbium hydroxide particles with or without ytterbium. The solid solution type or coated Y-containing spherical nickel hydroxide, when it has a molar Y/Ni ratio of 1-3%, aas obviously improved charge and discharge performance at 60 deg.c.

The invention provides an indoor navigation method based on a video live-action navigation technology. The method comprises the steps of: obtaining a path dividing node through modeling, and obtainingan on-site path node matched with the path dividing node through first visual angle video shooting, on the basis of processing and compressing path node videos, combining all path nodes in pairs to form a video node combination pair, calculating the shortest path corresponding to the path node combination pair, and forming the shortest path video data represented by the path node, namely the indoor navigation video data. And the user acquires the position information as starting point information according to the path node label or the path node picture, selects a destination as terminal point information through the user interaction terminal, and requests the shortest path video data matched with the starting point information and the terminal point information. The invention also provides an indoor navigation system. The conflict problem of navigation precision and cost in the prior art is overcome, and indoor navigation with no signal source, high precision and low cost is realized.

The invention discloses a making method of knocked livestock of protein gene, which is characterized by the following: losing activity for protein gene; making livestock possess relative disease of protein.

The present invention relates to a carotenoid cleavage dioxygenase CCD4a involved in the synthesis of gardenia jasminoides ellis crocin, an encoding gene and functions thereof, belongs to the technical field of gene engineering, and discloses the open reading frame sequence of a carotenoid cleavage dioxygenase CCD4a gene and the amino acid sequence encoded by the carotenoid cleavage dioxygenase CCD4a gene. According to the present invention, the CCD4a gene is screened based on transcriptomics, the functions of CCD4a are verified in vitro by using zeaxanthin as the substrate and constructing the pET28a-CCD4a prokaryotic expression vector, and the results prove that CCD4a has the functions of carotenoid cleavage dioxygenase so as to establish the foundation for the analysis and biosynthetic research of the crocin source pathway.

The invention discloses a classification method aiming at small sample and high dimensional images. The classification method aiming at the small sample and high dimensional images comprises the following steps: (1) gaining a first classification rule, (2) classifying images on a first level, (3) gaining a second classification rule, (4) classifying the images on a second level, (5) gaining a third classification rule, (6) classifying the images on a third level and gaining a classification result. The classification method aiming at the small sample and high dimensional images is combined with characteristics of industrial manufacture. The first-level image classification has strong manual controllability, and meanwhile combines a manifold dimensionality reduction method and superiorities of a support vector machine, thereby being suitable for the classification of the small sample and high dimensional images. Through combining a direct expression method of image type, the manifold dimensionality reduction method, and a support vector machine classification method with an arborescence topological structure classification method based on position features and barycenter features, a three-level image classification method is established. Due to the fact that the data transmission quantity between the image classifiers of the three levels is small, efficiency can not be affected. The classification method aiming at the small sample and high dimensional images is simple in operation, good in algorithm connection and few in input parameters.

The invention discloses a bearingless synchronous reluctance motor decoupling control system and a construction method thereof, which are used for suspension and speed control. When the system is used, an extended SVPWM (space vector pulse width modulation) inverter is firstly constructed to supply power for a motor torque winding and a suspension winding; then a magnetic field oriented decoupling model is constructed to realize the decoupling control of the motor before the magnetic field oriented decoupling model is concatenated to the extended SVPWM inverter; and finally an extended closed loop regulator is designed to realize high-performance closed-loop control on the system. According to the system provided by the invention, the extended closed loop regulator and the magnetic field oriented decoupling model can be realized by using a digital signal processor (DSP); besides, the system also comprises a displacement and current sensor and a photoelectric decoder which are used for acquiring current, displacement and a rotor location angular signal required by analysis and control of the DSP. The system and the method provided by the invention are used for the decoupling control of the bearingless synchronous reluctance motor with simple algorithm and excellent performance.