374results about How to "Uniform operation" patented technology

The invention relates to a gas turbine blade or vane ring having a supporting structure and gas turbine blades or vanes secured to it. The gas turbine blades or vanes have a blade or vane root, which is successively adjoined by a platform and then a blade profile which is curved in the longitudinal direction, the blade or vane root running in the longitudinal direction of the blade profile, and the platform having two platform longitudinal edges which are bent parallel and run in the longitudinal direction. To provide an alternative gas turbine blade or vane ring with simplified assembly, it is proposed that the blade or vane root be shaped in such a manner that the suction-side or pressure-side blade or vane root surface of the associated platform longitudinal edge be curved convexly or concavely, respectively. Moreover, the invention relates to the use of a gas turbine blade or vane ring of this type.

The invention provides a foreground segmentation method applied to mobile communication network transmission and belongs to the field of image processing and communication network transmission. Five background templates with the shooting time intervals to be consistent with image acquisition intervals in the case of operation are pre-stored, and the former four background templates are used for fine detection in the case when a target is detected coarsely. The difference region area between the monitored image and the background image is calculated to judge whether a target enters, the image does not need to be transmitted when the target does not exist, the target region is segmented when the target exists, and the target region is only transmitted. The received target region is fused in the pre-stored background image by a server for video playing or image presentation. In a shooting mode, in order to prevent a passerby from being judged to be an obstacle, the target is set to be transmitted to the server only when the target is extracted by a third party according to the scene length, the human walking speed and the monitoring shooting frequency. Background replacement can be timely carried out after each time of segmentation cycle acquisition is finished, and interference caused by light and other environmental changes can be overcome in a slow transition way.

The invention discloses a high-strength light foam ceramic plate and a manufacturing method thereof, and belongs to the field of building material manufacturing. The ceramic plate comprises the following materials in percentage by weight: 10-30 percent of sludge/bottom mud, 20-30 percent of building waste, 15-25 percent of waste ceramic, 10-25 percent of waste glass, 5-15 percent of bentonite, 5-15 percent of kaolin, 0.5-5 percent of aluminum powder, 5-10 percent of sodium bicarbonate, 0.5-1.5 percent of animal albumen foaming agent and 9-16 percent (percentage of total amount of the solid matters) of water. The manufacturing method comprises the following steps of: mixing and crushing the main raw material; adding the animal albumen foaming agent and water; granulating; filling a granular material into a refractory combined mould; leveling; filling in a kiln; firing; and performing cold processing to produce a ceramic plate finished product. The high-strength light foam ceramic plate has the advantages of high product strength, small volume weight, fire proofing, excellent freeze proofing, long-term water proofing, readily available main raw material which basically comes from environmental solid waste, has a wide source and is low in cost and adoption of the animal albumen foaming agent of small using amount and wide source; the manufacturing process has the advantages of simplicity, high efficiency, energy conservation, environmental friendliness, no secondary pollution; and the high-strength light foam ceramic plate can be used as thermal insulation decorative materials, fire barriers and the like of exterior walls of buildings.

The invention discloses a power battery equalization control method, and the method comprises the steps: judging whether the equalization processing of a battery pack of an electric car needs to be carried out or not when the electric car is in a charging state or a discharging state; determining each to-be-equalized cell in the battery pack when the equalization processing of the battery pack needs to be carried out; reading the equalization time of each to-be-equalized cell from a storage unit which stores the equalization time of each cell, and carrying out the equalization of each cell through the corresponding equalization time. The invention also discloses a corresponding battery management system. According to the embodiment of the invention, the method can effectively reduce the hardware cost, reduces the heat dissipation risk of a hardware cost, and prolongs the service life of the battery.

The invention belongs to the technical field of graphene materials and relates to a preparation method of a high quality graphene conductive film. The preparation method comprises the following steps: uniformly mixing natural flake graphite with mixed acid in a reactor, then adding an intercalator and stirring to react, and filtering, washing and drying to obtain layered graphite; then after microwave treatment of the layered graphite, dispersing the layered graphite in water for ultrasonic exfoliation to form a graphene aqueous liquid, and dispersing the centrifugalized graphene aqueous liquid in a solvent to obtain a graphene dispersion liquid; and then after ultrasonic treatment of the graphene dispersion liquid, forming a graphene thin film by virtue of dispensing or filtration of a cellulose filter membrane and polishing the surface of the graphene thin film, and furthermore, transferring the substrate and heating the graphene thin film to prepare the graphene conductive film. The preparation method is simple and convenient to operate, the controllability of process parameters is high and the production cost is low, and moreover, strong oxidants and toxic reducers are avoided, and the preparation method is environment-friendly.

The invention relates to the technical field of biochemistry and aims at providing a cadmium-contaminated paddy field soil microbial passivating agent. According to the technical scheme, for the cadmium-contaminated paddy field soil microbial passivating agent and application, the cadmium-contaminated paddy field soil microbial passivating agent is prepared from the following components including pseudomonas alcaligenes, bacillus subtilis, sulfate reducing bacteria, nutrients and a carrier. In microorganisms, the pseudomonas alcaligenes and the bacillus subtilis are mainly solidified by directly or indirectly adsorbing cadmium ions onto the surfaces of the microorganisms or into cells, so that the migration and the bioavailability of cadmium are lowered; and in addition, the pseudomonas alcaligenes has the effect of regulating a pH value of the soil. In the microorganisms, the sulfate reducing bacteria enables cadmium to be solidified in the soil by mainly reducing sulfate into sulfur ions to form cadmium sulfide with the cadmium. By applying the cadmium-contaminated paddy field soil microbial passivating agent, the cadmium in the soil can be passivated, and absorption of the cadmium ions by rice is greatly eliminated. The technical application is low in cost and convenient to operate and has very good popularization and application values.

In some aspects of the invention, semiconductor unit can produce chips performing uniform parallel operation and a low-thermal-resistance. Aspects of the invention can include a plurality of small semiconductor chips of one and the same kind formed by use of an SiC substrate, which is a wide gap substrate are sandwiched between two conductive plates. In this manner, there can be provided a high-reliability semiconductor unit in which parallel operation of the semiconductor chips is uniformized so that breakdown caused by current concentration can be prevented.

A method and system for monitoring the operation of a wind energy installation. State data relating to the wind energy installation is recorded and discrepancies are found between the state data and an associated comparison value. A failure probability of the wind energy installation is determined based on any found discrepancy. An availability value for the wind energy installation is determined from the ratio of the actually produced amount of electrical energy to the total amount of energy which can potentially be produced. The availability value and the failure probability are then combined to form a repair priority, which is associated with the wind energy installation. Accordingly, more uniform operation of wind energy installations can be achieved.

The invention discloses a method for simultaneously measuring an absorption coefficient of an aerosol at multiple wavelengths through a single photoacoustic cell. The method comprises the steps that amplitude modulation is conducted on multiple laser devices with different wavelengths through square signals which are generated by a function generator at the frequency intervals of df, lasers with different wavelengths are emitted into the photoacoustic cell after being subjected to beam combination through a fiber optic combiner, the lasers emitted into the photoacoustic cell interact with the aerosol in the photoacoustic cell, and a photoacoustic signal P<m>(f0+/-f) reflecting an absorption signal of aerosol particles is generated; the absorption coefficient of the aerosol at the multiple wavelengths is obtained through calculation according to a deduced absorption coefficient formula at different modulation frequencies. The method solves the problems of spatial and temporal heterogeneity of samples and particle losses caused by measurement conducted through multiple photoacoustic cells, the measuring process is simpler, and the system structure is more compact. By means of the method, the aerosol absorption Angstrom coefficient can be obtained, components of the aerosol can be recognized, and therefore a valuable decision making basis is provided for traceability and governance of haze.

The invention provides a double-shaft spike-tooth beater which comprises a rack and a machine case, a motor, a belt and two parallel shafts arranged on the rack; the two parallel shafts are arranged in the machine case; and a feed hopper and a discharge hopper are arranged on the rack. The beater is characterized that the two parallel driving and driven shafts are respectively provided with spike teeth and a pair of mutually engaged and connected driving and driven gears; the number of the teeth of the driving gear is less than that of the driven gear, and the motor is driven by the belt to connect with the driving shaft. The spike teeth on the driving and driven shafts are uniformly distributed, and the spike teeth on the two shafts are interlaced to keep certain distances. The beater is reasonable and simple in structure, easy to produce and manufacture, convenient in use and good in effect, and solves the problem that the fruit and vegetable skins are hard to be uniformly beaten before being washed and dried; with the transmission of the gears, double-shaft reversing, differential and alternative beating driven by one motor is realized, therefore, the beater has good security and lower cost, and can be operated conveniently and further can uniformly beat the fruit and vegetable.

The invention provides a method for prolonging the service life of a CdS nano photocatalyst. The method is characterized by depositing a layer of 1-10 A as protective layer (TiO2, ZnO, Al2O3, AZO, and the like) on the surface of a CdS nano particle synthesized hydrothermally by virtue of an atomic layer deposition technique. On the premise of guaranteeing relatively a high catalytic efficiency, light corrosion occurrence is effectively reduced, and therefore the service life CdS nano photocatalyst is prolonged from 1 hour to over 18 hour. The preparation method effectively reduces the harm to the light CdS nano particle and prolongs the catalyst life of the CdS nano particle.

The invention discloses a preparation method of a nitrogen-doped ordered mesoporous carbon material. The preparation method comprises the following steps: performing polymerization reaction on 2,4,6-trichloro-1,3,5-triazine and a polyamine compound in an organic solvent, adding an acid-binding agent to neutralize acid generated during polymerization reaction, so as to promote the polymerization reaction; filtering and drying to obtain a carbon-nitrogen material precursor, and performing high-temperature carbonization under inert atmosphere; cooling to room temperature, removing a template agent by utilizing hydrofluoric acid, to obtain the nitrogen-doped ordered mesoporous carbon material. The polymerization process of the precursor is simple and easily controlled and safe, the nitrogen-doped ordered mesoporous carbon material is good in the integration with a template, the porous structure is controllable, the cost is low, and the equipment is simple and convenient in requirement. The method is high in repeatability, and high in reaction yield; the product is good in uniformity, high in nitrogen content, and regular in structure; the whole process is simple and convenient. The prepared nitrogen-doped ordered mesoporous carbon material has porous ducts with ordered heights, large in specific surface area, the apertures are uniformly distributed, and the nitrogen-doped ordered mesoporous carbon material is high in stability, and has wide application prospects in the field of catalytic and electrode materials, and the like.

The invention relates to drying equipment, in particular to efficient drying equipment used for graphite powder wet manufacturing. The technical problems are solved. The efficient drying equipment used for graphite powder wet manufacturing comprises a treatment rack, a collection frame, a rotary motor, a fifth rotary shaft, a driving wheel, a flat belt, a discharge pipe, an electric control valve, a stirring rod, a first rotary shaft, a first bevel gear and the like. A fourth bearing base and the rotary motor are in bolt connection with the right-inner wall of the treatment rack. The fourth bearing base is located above the rotary motor. A fourth rotary shaft is connected to an inner bearing of the fourth bearing base in an interference fit mode. A driven wheel is in key connection with the fourth rotary shaft. The efficient drying equipment achieves the effects of being capable of uniformly heating graphite powder, simple in structure and easy to operate during working of the rotary motor.

The invention relates to a preparation method of large-dimension graphene oxide. The method comprises the following steps of using graphite paper as an anode; using a platinum sheet as a cathode; performing electrochemical pretreatment in electrolyte; performing intercalation on an anode material; peeling graphite; adding the materials into a mixed solution of an oxidizing agent and acid for oxidization reaction; peeling the graphene oxide under the oscillator oscillation or magnetic power stirring conditions, so that the multilayer graphene oxides are peeled into single-layer and few-layer graphene oxides and are dispersed into deionized water to form large-dimension graphene oxide dispersion liquid; performing centrifugal separation to obtain graphene oxide slurry; performing freeze drying treatment to obtain large-dimension graphene oxide powder. The invention also provides the large-dimension graphene oxide obtained by the preparation method. The electrochemical intercalation graphene is used as raw materials to perform oxidization reaction to realize the fast oxidization on the graphene; through natural settling cleaning and mild mechanical peeling, the fast peeling on the large-dimension graphene oxide is realized; the characteristics of high efficiency, high yield and low cost are achieved.

To control the uneven distribution of current density and reduce the area of an ESD protection circuit in an SCR-type ESD protection device. An N-type well 11, and P-type wells 12a and 12b disposed oppositely and adjacent to the N-type well 11, with the N-type well 11 interposed between them, are formed on the surface of a semiconductor substrate. A high concentration N-type region 15a is formed on the surface of the P-type well 12a, a high concentration N-type region 15b is formed on the surface of the P-type well 12b, and each of them is grounded. Further, a high concentration P-type region 14a is formed, oppositely to the high concentration N-type region 15a, on the surface of the N-type well 11, and a high concentration P-type region 14b is formed, oppositely to the high concentration N-type region 15b, on the surface of the N-type well 11, and each of them is connected to an I/O pad. A high concentration N-type region 13 is formed on the N-type well 11, being interposed between the high concentration P-type region 14a and the high concentration P-type region 14b, and connected to a trigger device. A surge loaded on the I/O pad is released to the ground terminal via the SCR structures on the both sides.

The invention discloses an indoor scene three-dimensional point cloud reconstruction method based on depth information fusion. The method comprises the following steps: collecting a color image and a depth image of a scene; fusing the color image and the depth image to perform feature extraction and matching; determining the pose of the depth camera and screening out a key frame; generating a three-dimensional point cloud of each key frame according to the key frames; and splicing the three-dimensional point cloud of each key frame frame by frame according to the pose of the depth camera to obtain a globally consistent scene three-dimensional point cloud model. According to the method, whether a point is a feature point is judged by using image brightness information and depth information at the same time in feature extraction, so that the extracted feature points have high representativeness. Meanwhile, homogenization operation is performed on the extracted feature points, it is ensured that the number of the feature points is within a reasonable range, the calculated amount of a system is effectively controlled. The system reliability is improved. The accuracy of the front end is improved, the robustness of the front end is enhanced, and the result of back-end optimization is more accurate or the number of iterations of back-end optimization is reduced.

The invention belongs to the scientific and technical field of carbon materials, and provides a method for preparing metal or metal oxide/carbon composite materials by asphaltine. The method takes the by-product asphaltine in the coal liquefaction process as a carbon source, takes a pyrolytic polymer as a pore-forming agent, and takes easily-pyrolytic metal salt as a metal precursor; and then the metal or the metal oxide/carbon composite materials are prepared by one step after the physical blending and carbonizing reductive treatment. The metal or the metal oxide/carbon composite materials prepared by the method have the controllable appearance that the metal or the metal oxide is uniformly dispersed in a carbon carrier with the grain diameter of 3-50nm. The preparation process has simple routes, mild conditions, conventional equipment, low cost, and controllable output of products, and is suitable for mass production. The prepared metal or the prepared metal oxide/carbon composite materials can be used as a highly-active catalyst, an adsorbent, a magnetic separation material, an electrode material and the like.

The invention provides a lithium ion battery equalization control enablement method and a quitting method for hybrid vehicle, and the control enablement method is as follows: when the vehicle is in an idle state, parking time of the vehicle is determined; if the parking time exceeds a preset threshold, battery voltages of all monomers of a battery pack are collected; if the voltage difference exceeds a certain threshold and a present system does not have fault, an equalization is enabled to carry out for the battery monomer. In the equalization process, if the voltage difference is less than a certain threshold, or the vehicle has a power on request, or the equalization temperature is higher than a certain threshold, or an equalization time exceeds a certain threshold, the equalization function quits from the monomer battery which is carried out with the equalization. According to the invention, the equalization enablement method and the quitting method can be carried out for correct effective equalization start and close control in the prerequisite that the battery and the vehicle are safe, and reduce differences between battery monomers.