537results about How to "With a clear purpose" patented technology

The invention discloses a dynamic and static combined loading rock test machine and test method used for multiphase coupling. The machine comprises a visual confining pressure loading chamber module, air pressure control modules, a dynamic loading module and constant volume modules; and the loading chamber of the visual confining pressure loading chamber module is a steel cylinder structure with a square outside and a circular inside, three surfaces of the loading chamber has windows, high borosilicate glass is embedded in every window to realize the visualization of the test process, an opening in one surface of the loading chamber is provided with a rear door which is convenient to replace and take a test piece, and various monitoring devices are arranged in the loading chamber and are led out through sensor lead wires of a baseboard to realize real-time monitoring of all physical-mechanical parameters of the test piece in the test process. The machine has the advantages of small size, simple structure, convenience in dismounting, and realization of accurate, quantitative and visual monitoring of the adsorption-desorption characteristic of a coal rock standard test piece in different load forms and coupling form and the permeability and the damage dilatancy process of gas-containing coal body in different loading stages.

The invention relates to the field of the electric system technology, in particular to a net rack optimization method for a multi-direct-current centralized fed receiving end power grid. According to the method, the network voltage supporting capacity of the receiving end power grid, the short-circuit current control effect of the receiving end power grid and the short-circuit current control measure cost of the receiving end power grid are all considered. The method includes the steps of taking the maximum multi-direct-current feeding comprehensive short-circuit ratio, the maximum short-circuit capacity comprehensive margin and the minimum total cost of investment of current limiting measures as three objective functions, building a multi-objective optimized mathematical model which includes the three objective functions and power grid constraint conditions, and utilizing an NSGA-II multi-objective genetic algorithm to carry out the multi-objective optimization method. A result provided through the method is a line unlocking or series reactor added combining scheme, and the power grid can have strong voltage supporting capacity and system stability on the basis of controlling of a short-circuit current through moderate cost. The method has strong adaptability to an existing receiving end power grid optimization scheme.

The invention relates to a navigation device and a path searching method. When a path searching part has the following situation that: the final destination is present in the limit area (131) where the own vehicle is limited, the vehicle tool capable of connecting with the perimeter of the final destination is used as the replacement traffic way of the own vehicle based on the information selection of the passenger of the own vehicle. When the elderly is present in the passengers or many children are present in the passengers, a taxi is selected as the replacement traffic way. And, the get-onand get-off yard of the selected traffic tool is used as the transfer destination to search the path again.

The invention discloses a high-efficiency separation and purification method of a glabridin monomer. The method comprises the steps of: extracting raw material dried roots of Glycyrrhiza Glycyrrhiza glabra L which is a leguminous plant with an organic reagent A; and then extracting with an organic reagent B; carrying out chromatography by using polyamide columns and macroporous adsorbent resin columns; and finally separating and purifying a target area solution by using high effective liquid chromatogram columns; carrying out on-line test by using HPLC (High Performance Liquid Chromatography), and purposely collecting a glabridin monomer solution to obtain the glabridin monomer with the concentration higher than 98%. The invention has the advantages of high production quantity, high yield rate and good production quality, and is suitable for industrial production.

The invention discloses a control method of an IQ modulator and a system thereof. The control method comprises the following steps of adding disturbance signals of a first disturbance frequency f1 and a second disturbance frequency f2 in an I bias voltage and a Q bias voltage of a light IQ modulator; detecting an output light signal output of the light IQ modulator and the added disturbance signals in real time, and monitoring direct current light power and calculating a correlation coefficient of the input disturbance signals and the output light signal; and using a light power value and the correlation coefficient to carry out feedback adjusting on the bias voltages of the light IQ modulator so that a bias state of the light IQ modulator satisfies an adjusting object. In the invention, through establishing connection between a bias voltage VI of an I path, a bias voltage VQ of Q path control and a bias voltage VP of a P path and the first disturbance frequency f1 and the second disturbance frequency f2, spectrum analysis in the prior art is replaced so that a calculating method is simplified; and an adjusting process possesses directivity, and a bias resolution of a control signal is less than 0.005Vpi.

The invention provides a water flooding oil reservoir fireflood production well selective water controlling and channelling sealing method. The method comprises the steps that a gas channelling preferential migration pathway is sealed and blocked using a channelling sealing agent; and high water-cut preferential migration pathways near an oil well are selectively sealed and blocked. The channelling sealing agent comprises an alkali-resistant surfactant foaming agent and an auxiliary alkaline reducing agent; and the alkali-resistant surfactant foaming agent is selected from one or more of sodium lauryl sulfate, fatty alcohol polyoxyethylene ether sodium sulfate, rosin soap materials, animal and vegetable protein materials, papermaking black liquor and the like, and the auxiliary alkaline reducing agent is sodium oxalate. The water flooding oil reservoir fireflood production well selective water controlling and channelling sealing method is a selective water controlling and channelling sealing integrated technology.

The invention discloses a subway station passenger flow micro statistics and scheduling method. The method comprises the following steps of building a model of the total number of people entering and leaving an automatic fare collection entrance in the time period T, and making a scheduling strategy according to the model; building a dynamic moving model of escalators and pedestrian stairs, and making a scheduling strategy according to the model; and building an in-station-hall dynamic subway waiting people number model, and making a scheduling strategy according to the model. The method has the advantages that the intuitive performance is good; the implementation is simple; and the intentionality is definite, and the like. By the method provided by the invention, the number of people in station entering ticket check-in gate and a station leaving ticket check-in gate in a subway system, the number of people in passages and stairs, and the number of subway waiting people in different station halls in each time period can be predicted; easy-to-be-crowded regions such as station entering and leaving ticket check-in gates, stairs and platforms are subjected to maximum passenger flow threshold value analysis and prediction distribution, so that the passenger flow rule is provided for the relative traffic study; and the data analysis and support is provided for the infrastructure building.

The invention belongs to the technical field of weakening treatment of hard and difficult roofs of coal seams, in particular to a method for weakening hard roofs of coal seams. Solve the problem that in the actual mining process, the hard roof is overhanging in a large area and it is difficult to collapse naturally. After the collapse, it mostly collapses in a large area and has a large impact range. 1) Drilling settings, 2) Ground drilling, 3) Chemical erosion, 4) hydraulic fracturing, 5) surface drainage. The invention can not only give full play to the softening effect of the chemical solution on the hard roof rock, but also give full play to the effect of hydraulic fracturing on the cutting and cracking of the rock, thereby softening the hard roof rock.

A film-spreading oil agent capable of preventing and curing rice banded sclerotial blight comprises the following components by weight percent: 10-60 percent of effective component, 3-85 percent of additive, 0-70 percent of filling material, 5-14 percent of water surface diffusant, and 0-10 percent of water, wherein the effective component is one or the combination of any one selected from difenoconazole, propiconazole, hexaconazole, epoxiconazole, tricyclazole, tebuconazole, kresoxim-methyl, azoxystrobin, trifloxystrobin, enestroburin, thifluzamide, validamycin, and prochloraz, and the weight ratio of the two effective components under two ways is (1:10)-(10:1). The oil agent has the technical effects that the effect of preventing and curing the rice banded sclerotial blight is improved, the operation is simple, labor and time are saved, no harm is caused for human body, and no pollution is caused for the ambient condition when the oil agent is applied; moreover, the utilization ratio of the effective component is improved, the labor intensity is reduced, the labor is saved, and the agricultural production cost is reduced.

The invention provides a projection device for projecting images on an object. The projection device comprises a sensing unit, a control unit, a light source module and an optical processing unit, wherein the sensing unit generates a sensing signal; the control unit is coupled to the sensing unit and generates a control signal according to the sensing signal; the light source module outputs polychromatic light and adjusts the polychromatic light according to the control signal; and the optical processing unit receives the polychromatic light output by the light source module to generate a projection image.

The invention relates to a modeling and verifying method of a laser gyroscope temperature compensation model. The method comprises 1, acquiring original data output by a laser gyroscope and multiple temperature information in different positions, building a laser gyroscope temperature compensation model and calculating a temperature compensation coefficient, and 2, building a verifying test weakly related to a modeling test on the laser gyroscope temperature compensation model and verifying compensation effects of the temperature compensation model through dual indexes such as the laser gyroscope zero-bias stability and zero-bias repeatability. The method realizes simultaneous examination and verification of two zero-bias key indexes such as zero-bias stability and zero-bias repeatability of the laser gyroscope after temperature compensation, has a more clear temperature compensation object and is conducive to further improvement of a temperature compensation precision. The method is conducive to improvement of a temperature coefficient precision of a temperature compensation model so that a temperature compensation precision and reliability are improved.

The invention relates to a method for quickly acquiring process information of a part. The method comprises the following steps of: designing the part by design staff and process staff through three-dimensional modeling software, adding geometric information, processing information and other information onto nodes of a feature tree of the part for storing different types of attribute information; simultaneously improving a template library by the process staff, performing detailed classification on the corresponding process information, detailing to each sub-node, then starting PDM (pulse density modulation) software, checking the part into a product data management system through corresponding intermediate software and simultaneously storing the process information of the part into a database of the information quick acquiring method so as to facilitate the extraction of the process information; and logging into a PDM system by manufacturing staff, entering a visual page, entering the part concerned by the manufacturing staff and selecting the node of the information concerned by the manufacturing staff so as to be capable of generating a three-dimensional process digital model and a process file of the part which only carries the information concerned by the manufacturing staff.

The invention relates to a low-noise amplifier with a multi-configurable bypass mode. The low-noise amplifier is characterized by comprising an amplification stage, an isolation stage, a load stage, an input matching stage, an output matching stage, and a multi-configurable bypass module, wherein the multi-configurable bypass module provides a low-impedance circuit from a radio frequency input end to a radio frequency output end, the low-impedance circuit and an LNA amplification circuit are mutually exclusive, namely at most only one of the two circuits is valid; the low-noise amplifier amplifies a radio frequency signal when the LNA enables, and directly outputs the radio frequency signal from the radio frequency output end when the bypass enables; when the low-impedance circuit and the LNA amplification circuit are closed, the LNA is in a closed mode; the amplification stage and the load stage are connected via the isolation stage, the input node of the multi-configurable bypass module is located at the input end of the input matching stage or between the output end of the input matching stage and the input end of the amplification stage, and the output point of the multi-configurable bypass module is located at the input end or output end of the output matching stage. The low-noise amplifier is improved in design efficiency and flexibility.

The invention discloses an enzymolysis preparation method of Cannabis sativa seed meal polypeptide with alpha-glucosidase inhibiting activity. The method includes: drying Cannabis sativa seed meal and crushing it into powder, adding water and stirring the mixture evenly, adjusting the pH to 8.0-10.5, adjusting the temperature to 30-80DEG C, performing stirring at a uniform speed for 0.5h-2h, conducting centrifugation and adjusting the pH of the supernatant to 3-6, thus obtaining protein precipitate; adding water to dissolve the protein, with the proportion being 2-7g:100mL, adjusting the pH to 7.0- 9.5, then adding alkaline protease, with the ratio of the protein weight to the enzyme activity being 0.1-5:1000, keeping the temperature at 50-75DEG C, and controlling the time at 1-4h; subjecting the enzymatic hydrolysate to separation and purification through macroporous adsorption resin and a Sephadex column, and carrying out collecting and drying, thus obtaining the alpha-glucosidase inhibiting active peptide powder. The Cannabis sativa seed meal polypeptide provided by the invention adds new sources for alpha-glucosidase inhibiting active substances, realizes full utilization of raw materials, and has the advantages of high product activity, convenient and feasible preparation process, and environmental protection, etc.

A carriage-mounted unit of a weft knitting machine enabling a reduction in size even if it has a large number of functions. A pair of stitch pressers (3, 4) are driven by the rotating motion of a motor (7) through one side drive mechanism (10) and the other side drive mechanism (20). The one side drive mechanism (10) and the other side drive mechanism (20) is provided with double-lift cams (11) and (21) to reduce a load on the motor (7). A cam drive mechanism (30) advances and retreats a bristle (5) being the other member to and from a trick gap part (6) so as to avoid its interference with the pair of stitch pressers (3, 4). Even if at least three of stitch pressers (3, 4) being a pair of members and the bristle (5) being the other member are so driven by the single motor (7) that each of these members is advanced to and retreated from the trick gap part (6) by the rotation of the motor (7), a part such as a groove cam plate reciprocating in the reciprocating direction of a carriage (2) is not provided in the unit, and therefore, the unit can be small-sized.

A body cavity probe apparatus can minimally invasively detect the insertion shape of a body cavity probe and the direction of real-time images to create guide images each containing both the insertion shape of the body cavity probe and the direction of the real-time image. An ultrasonic endoscope as a body cavity probe inserted into the body cavity has an ultrasonic transducer array in a rigid portion located at a distal end thereof, to acquire an ultrasonic echo signal, an image position and orientation detecting coil provided in the vicinity of the ultrasonic transducer array, and an insertion shape detecting coil provided in a longitudinal direction of the flexible portion, thus generating guide images each containing the shape of the flexible portion and the direction of an ultrasonic tomogram generated from the echo signal as a real-time image.

The invention discloses an electric system low frequency oscillation aid decision making method based on operation mode sensitivity. On account of low frequency oscillation possibly existing in an electric system, the operation of constructing objective function is performed to the sensitivity index of the operation mode by applying a characteristic value, and a policy table for adjusting the operation mode of the system is obtained through optimizing calculation, so that low frequency oscillation aid decision making is performed. The method combines the sensitivity index with an active adjustment scheme, the unit with the larger sensitivity index is utilized to take part in output adjustment, and the unit with the smaller sensitivity index performs output balance, so that the purposes that the operation mode (active power) of the electric system is adjusted to improve small-signal stability of the system and restrict the low frequency oscillation are realized. The method is also suitable for reactive and voltage adjustment aid decision making in the low frequency according to the sensitivity index.