57results about How to "Achieve redistribution" patented technology

The invention discloses an MEMS (micro electro mechanical system) device and a wafer-level vacuum packaging method thereof, wherein the MEMS device is composed of a glass substrate (1), a silicon wafer sensitive structure layer with a sealing ring (2), and a silicon cap (9), and the MEMS device is characterized in that at least two silicon islands (11) are arranged in the silicon wafer sensitive structure layer, the bottom of each silicon island (11) is connected with the glass substrate (1) and an electrode lead (8), a press welding spot (6) is respectively arranged on the top of each silicon island (11); parts, corresponding to the silicon islands, on the silicon cap are respectively provided with a press welding spot cavity (7), so that the press welding spots (6) are arranged in the press welding spot cavities (7); and the periphery of each press welding spot cavity is provided with a press welding spot sealing ring (12) which is connected and matched with the top of each silicon island, and the periphery of each press welding spot sealing ring is provided with a press welding spot isolation channel (5). The MEMS device and the wafer-level vacuum packaging method thereof disclosed by the invention have the advantages that the technical problem of electrical isolation between the leakproof structure of the press welding spot and the press welding spots caused by that an electrode is led in the surface of the structural layer of the device from the substrate is avoided, so that the vacuum packaging structure of the MEMS device disclosed by the invention is reasonable in design, simple in process, long in vacuum retention time, reliable in performance and versatile, thereby reducing the cost for vacuum packaging.

The invention relates to an electro-deionization method and device for concentrating and purifying heavy metal wastewater synchronously, belonging to a wastewater treatment technique, which adopts first-stage two-section or first-stage multi-section electro-deionization device, wherein the inner sides of the positive and negative poles are arranged with corresponding pole protection chambers, the desalting chamber is filled with large-hole strong-acid strong-base mixed bed resin with narrow particles distributed; cation exchange film is adopted as the direction-turning film, after direction-turning, two adjacent concentration chambers are arranged continuously, both are separated by cation exchange film, simultaneously after direction-turning, the first concentration chamber is filled with large-hole mixed bed resin with the volume of cathode resin more than 50 percent, the heavy metal wastewater to be treated enters the desalting chamber and the concentration chamber in two paths, the heavy metal ion and cathode in the desalted water flow are transferred into the concentration chamber so as to obtain the desalted water, the concentrated water flow is partially circulated or closely circulated so as to obtain the concentrated liquid of metal wastewater, thereby recycling valence metals and pure water resources synchronously and realizing zero emission and resource treatment of wastewater. Compared with the prior art, the wastewater treatment process has higher separation efficiency, more reliable operation, more convenient operation, continuous process operation and no secondary pollution.

The invention discloses a dynamic STKNN model-based short-time traffic prediction method. The method comprises the steps of: a, feature representation: averaging traffic conditions of each road segment in history days, and carrying out feature representation on each road segment by utilizing an average speed vector; b, automatic traffic mode recognition: automatically recognizing similar traffic modes of road networks through an AP cluster algorithm; c, automatic time interval division: aiming at the automatically recognized traffic modes, automatically dividing time intervals through a K-Means algorithm; and d, self-adaptive STKNN model construction: aiming at each time interval of each traffic mode obtained in the step 2 and 3, respectively constructing an STKNN model. The method is capable of directly helping the traffic management department to generate reasonable and efficient strategies to ease traffic congestion, thereby realizing redistribution of road network traffic flows andhelping the public to realize correct path planning.

The invention relates to a gas diffusion layer as well as a preparation method and application thereof. The gas diffusion layer comprises a supporting layer, and a composite carbon material diffusionlayer and a microporous layer which are sequentially arranged on the surface of the supporting layer; the supporting layer is made of a porous material, and the composite carbon material diffusion layer comprises carbon nanotubes and carbon fibers. The support layer provided by the invention has high mechanical strength, and can be used as both a current collector and a diffusion layer frame substrate; the carbon nanotubes and the carbon fibers are mixed, the carbon fibers serve as a base frame, the carbon nanotubes serve as filler of the frame, the requirement for high air permeability of thegas diffusion layer is met, and high mechanical strength is achieved; the microporous layer can fill up pores with different sizes of the diffusion layer, and can also slow down the unevenness phenomenon of the diffusion layer, so that redistribution of water and reaction gas in a flow field and the catalyst layer is realized, the conductivity is increased, and the service life of a battery is prolonged.

The invention relates to method for preparing an electrode for a fuel cell. The method includes the steps: 1) providing an electrode substrate; 2) forming a microporous layer on the electrode substrate; 3) forming a nano carbon layer on the surface of the microporous layer; and 4) forming a catalyst layer on the surface of the nano carbon layer. The microporous layer is formed by using a specific method. The fuel cell prepared by the method disclosed by the invention has extremely high electrochemical efficiency and output power.

The invention provides a message forwarding method and system. The method is applied to a switch, and comprises the following steps: a switch chip receives a message to be forwarded; after determining that a target ARP table item corresponding to the message to be forwarded is not stored in an ARP table, a CPU acquires the target ARP table item, associates a priority identifier for the target ARP table item, and issues the target ARP table item to a switch chip ARP table; when ARP storage resources in the switch chip ARP table are exhausted and the target ARP table item is associated with a high priority identifier, the CPU replaces any ARP table item that is associated with a normal priority identifier in the switch chip ARP table as the target ARP table item; and the switch chip forwards the message to be forwarded according to the target ARP table item. By adopting the message forwarding method and system provided by the invention, the ARP table items of the switch chip are associated with different priority identifiers, the ARP table items with low priority are replaced by the ARP table items with high priority, and thus the switch chip can store the three layers of forwarded ARP table items when the ARP storage resources are exhausted, and network delay or interruption caused by excessive usage of the CPU when forwarding the three layers of messages can be avoided.

The invention discloses a method for inhibiting Laves phase precipitation in a nickel-based alloy laser additive manufacturing process. The method specifically comprises the following steps that a base material is placed on a workbench with a cooling device, a synchronous inhibiting device is well installed, a semiconductor laser and a boiling type powder feeder are started to start cladding of metal powder, meanwhile, three chilling copper pipes of the synchronous inhibiting device are used for chilling the edge of a molten pool, after machining is completed, a sample is scanned, and the cross section structure condition of the sample is observed. According to the method, in the laser additive manufacturing or remanufacturing process of the nickel-based superalloy, a chilling source is added around the liquid molten pool, redistribution of a temperature field in the molten pool can be achieved, the front edge temperature gradient of a solid-liquid interface is increased, the solidification speed of the molten pool is increased, gathering of segregation elements such as Nb, Al and Ti among dendritic crystals is effectively reduced, and a guarantee is provided for precipitation of a strengthening phase in the subsequent aging treatment process.

The invention discloses a rotating packed bed for treating ammonia-nitrogen wastewater, belongs to the technical field of wastewater treatment, and aims to provide therotating packed bed for treatingammonia-nitrogen wastewater. The rotating packed bed comprises a shell, wherein a gas inlet is formed in one side of the shell; a gas outlet is formed in the top of the shell; a liquid inlet and a liquid outlet are respectively formed in the bottom of the shell; an annular packing support frame is arranged in the shell; packing is arranged in the packing support frame; a tubular liquid distributoris arranged in the center of the packing support frame; a plurality of nozzles are arranged ina connecting pipe of the tubular liquid distributor; the center of the top of the packing support frame is connected with a driving device through a rotating shaft; a gas distributor is arranged at the gas inlet; and a plurality of liquid redistributors are arranged on the side wall, parallel to the rotating shaft, of the shell. According to the invention, ammonia nitrogen in the ammonia nitrogen wastewater can be controlled at a certain concentration, so that the ammonia nitrogen wastewater is discharged after reaching the standard.

The invention discloses a garment sewing assembly line optimization method. According to the method, an ant colony algorithm is improved by utilizing a genetic algorithm. By referring to the ideas ofchromosome crossover and variation in the genetic algorithm and combining the ability of the ant colony algorithm to quickly search the optimal value and the robustness of the solving performance, thegarment sewing assembly line is optimally designed. The crossover and variation thought in the genetic algorithm can better achieve recombination and redistribution of sewing assembly line processes,and the robustness of the ant colony algorithm solution performance can enable the ant colony algorithm solution performance to be easily applied to the garment sewing assembly line optimization problem. And meanwhile, the advantage of quick search of the ant colony algorithm can be fully exerted, optimized recombination of the garment sewing assembly line can be more accurately and more quicklyachieved, the number of iterations is reduced, and divergence is avoided.

The invention discloses a method for improving performance of a device of an SONOS (silicon-oxide-nitride-oxide-silicon) structure. The SONOS structure comprises a substrate, a tunneling dielectric layer, a charge storage layer, a barrier dielectric layer and a conducting layer, wherein the substrate comprises a source and a drain inside, and the tunneling dielectric layer, the charge storage layer, the barrier dielectric layer and the conducting layer are arranged on the substrate from bottom to top in sequence, wherein a concave SONOS structure design is adopted and a graded silicon nitride layer is used for forming the charge storage layer. The method has the following beneficial effects: the formation of the concave SONOS structure facilitates the difference of distribution of the electric field strength in different layers, so that the compiling and erasing speeds can be increased, and the impact of the erasing saturation on the erasing speed can be inhibited; due to relatively low difference between the Young's moduli of the graded silicon nitride layer and the tunneling silicon oxide layer, the impact of stress caused by relatively high difference between the Young's moduli of the tunneling silicon oxide layer and the silicon nitride on the device can be reduced; and the trapped electrons can be redistributed by the gradual silicon nitride layer, so that the storage charges can be distributed in the charge storage layer more uniformly.

A sewage pipeline, the stirring spindle drives the stirring unit to rotate to drive the horizontal plate and the stirring extension part to stir the sewage and waste water. The stirring extension part includes a vertical pipe and a horizontal pipe, and the medicine outlet hole of the plate and the medicine outlet hole of the part can be supplemented and decomposed online The medicine and heating device can provide heat energy to the mixing room. The connecting room and connecting port are conducive to the re-discharge of treated sewage and wastewater. The temperature sensor installed in the side wall of the mixing room can monitor the temperature in the mixing room. This design not only has a strong mixing and crushing function, can be heated and dispersed, and has a better dispersion and homogenization effect, but also can supplement and decompose drugs online, which is beneficial to the re-discharge of treated sewage and waste water.

The invention relates to a method for depositing an InGaN film on a Si(100) substrate via double-optical-path pulse laser. The laser is divided into two paths to irradiate a target material. The method concretely comprises that the cleaned Si(100) substrate is placed on a substrate platform, heated to 650-750 DEG C, and thermally insulated for 50-70min; TiN, AlN, GaN and InGaN layers are depositedsuccessively in the laser energy of 150-250mJ, 50-150mJ, 200-300mJ and 100-200mJ for deposition time of 10-30min, 30-50min, 50-70min and 50-70min respectively; and the InGaN layer undergoes a double-optical-path technology. The crystal quality of the thin film can be improved, and the efficiency of devices as a semiconductor laser, light emitting diode and solar battery can be improved greatly.

The invention provides a transmission method and system of interactive digital signals belonging to the digital signal processing technology field. The method comprises: receiving at least a request signal of digital interactive information and outputting an obtaining instruction and a distribution signal of digital interactive information corresponding to the request signal according to the request signal; obtaining the digital interactive information corresponding to the request signal according to the obtaining instruction and outputting it; receiving output the digital interactive information and encrypting the same and sending processed digital interactive information, after modulated by a corresponding QAM modulation device, to corresponding digital TV receiving terminal via the transmission channel of digital signals, which realizes recycling and re-distribution of idle digital signal transmission channels when the user changes service content and saves network bandwidth with strong applicability.

The invention discloses a high and medium pressure joint heat supply system based on energy level matching. The high and medium pressure joint heat supply system based on energy level matching comprises a high pressure heat supply steam system, a medium pressure heat supply steam system and a steam-steam heat exchanger system. Firstly, the novel steam-steam heat exchanger system is designed, by means of the system, energy redistribution is achieved, temperature lowering of the medium pressure heat supply steam system is achieved, heating of high pressure heat supply steam is also achieved, and gradient utilization of energy is achieved by achieving two benefits; secondly, according to the heat supply scheme, steam extraction is used for replacing raw main steam heat supply, separate production of heat and power of the original high pressure heat supply steam is changed into combined production of heat and power, and the energy utilizing efficiency is improved; and thirdly, a high pressure heat supply bypass and a medium pressure heat supply bypass system are designed, and by means of cooperation of a heat supply main way and the bypasses, the variable work condition requirement of heat supply is flexibly and conveniently met. Thus, by means of the high and medium pressure joint heat supply system based on energy level matching, the energy utilizing efficiency is improved, and the heat supply reliability is also improved.

The invention discloses a vertical pipe high efficiency falling-film evaporator suitable for evaporation of small flow, high viscosity and heat-sensitive materials. The vertical pipe high efficiency falling-film evaporator mainly comprises a liquid distributor, drain pipes, spiral nozzles, heat exchange pipes, fixed rods, positioning pipes, vapor-liquid redistribution elements and fixed parts. Theliquid distributor and the spiral nozzles are connected by the drain pipes, and the heat exchange pipes are internally equipped with the vapor-liquid redistribution elements. The vertical pipe high efficiency falling-film evaporator provided by the invention has the beneficial effects that: the evaporator solves the initial distribution problem of small flow and high viscosity materials, solves the problem that parts of liquid drops directly fall from a pipe center without full heat exchange because of steam flow impact in the liquid falling process, and solves the problem that high viscositymaterials flow difficultly, the liquid on the inner surfaces of heat exchange pipes cannot be renewed timely, and therefore the heat transfer efficiency of the evaporator is reduced.

The invention discloses a thermostat device capable of performing continuous variable temperature control in a wide temperature zone, which comprises a low-temperature refrigerating system, a sample cavity assembly, a heat insulation assembly and a sample temperature control system. A sample rod body (43) in the sample cavity assembly is provided with a sample temperature sensor (54) and a sample heater (55) which are respectively connected with a temperature controller (57) in the sample temperature control system, the temperature controller (57) is connected with an upper computer (56) through a circuit, and the upper computer (56) performs PID closed-loop control on the sample temperature sensor (54) and the sample heater (55) through the temperature controller (57). A static helium pressure sensor (64) connected with the upper computer (56) is arranged on a static helium pipeline communicated with a static helium interface (47) in the sample cavity assembly. The device disclosed by the invention can realize continuous variable temperature control in a wide temperature zone of 2-800K, and meets the requirements of the current high-end physical property measurement field.

The present invention relates to the technical field of maize cultivation and in particular to a dryland farming and water-saving cultivation method for maize in an arid cropland in loess plateau. Rotary tillage, drip irrigation tape laying, film mulching and seeding integrated operation is adopted, a narrow line is 40 cm wide, a wide line is 60 cm wide, ridges are formed in the wide row, a drip irrigation tape is laid, the ridges serve as rain collecting regions, furrows serve as planting regions, the slopes of the rain collecting ridges are 35 DEG, and the ridges are 30 cm high and are disposed in an east and west direction; mechanical hole sowing is performed, a degradable water-absorbing fiber ball is buried in each of front, rear, left and right sides of each hole, the hole spacing iskept at 24-27 cm, the sowing depth is kept at 3-4 cm, the line spacing in the furrows is kept at 40 cm, and the planting density is kept at 5000-5500 per mu; and the total ground is covered with a plastic film with the width of 120 cm and the thickness of 0.08 mm, the edge of the plastic film is fixed and pressed with soil so that the plastic film is prevented from being damaged by wind, film mulching is kept for 10 d, a mulching film clings to the ground or perforation is performed every other 50 cm in the furrows after rainfall. By using the dryland farming and water-saving cultivation method, the emergence rate and survival rate of seedlings may be increased, and meanwhile, the utilization efficiency of water may be remarkably increased.