39results about How to "Not demanding" patented technology

The invention relates to an LED large-area controllable surface coarsening and etching method based on a laser, belonging to the technical field of an LED. The method utilizes semiconductor material for carrying out strong absorption generating gasification on high-power laser with the wavelength less than the band edge absorption wavelength of the semiconductor material, thus realizing surface coarsening for the semiconductor material on the surface of the LED. A high-speed galvanometer or a precise displacement platform is used for controlling the laser processing area or pattern, and can be used for controlling the laser power and the processing line width and depth of focus level adjustment. The LED large-area controllable surface coarsening and etching method can be applied to surface coarsening and etching of the GaAs-based LED and the GaN-based LED of various structures. The laser takes the wavelength less than the band edge absorption wavelength of the processed semiconductor material as reference. The method has the advantages of wide applicable material, rapid processing speed, large area, low cost, good coarsening effect, low damage for the semiconductor material, high controllability of system processing parameters and the like, can effectively solve the problem of p-GaN layer coarsening, and has great application potential in the production of the high-brightness LED.

The invention discloses a fish and vegetable symbiotic system and application thereof. The fish and vegetable symbiotic system includes a water inlet, a water storage tank, at least one filter tank, avegetable planting pipeline, a drainage port, a waste liquid treating tank and a fish framing water tank which are all connected in sequence; the fish framing water tank is lower than the position ofthe waste liquid treating tank. By adopting the fish and vegetable symbiotic system, firstly, vegetables are planted in the vegetable planting pipeline, and fish are farmed in the fish framing watertank; then, water in the fish framing water tank is transported into the water storage tank, and after being filtered by the filter tanks, the water is transported to the vegetable planting pipeline;finally, the water is transported to the waste liquid treating tank, and after being treated, the water is transported back to the fish framing water tank. In this way, water current circulation is formed, the eutrophic water can be converted into water suitable for survival of aquatic organisms, meanwhile, nutrient substances in the eutrophic water are used as plant fertilizer, therefore, waste of water resources is reduced, and the cost can be reduced.

The invention relates to a method for preparing an oxide dispersion strengthened copper composite material, and belongs to the field of preparation of copper alloy materials. The method is as follows:firstly reducing Cu powder; alloying element powder, to be more specific, thoroughly mixing the reduced Cu powder with an appropriate amount of Y powder to obtain a Cu powder and Y powder mixture, then packaging the Cu powder and Y powder mixture and grinding balls in a stainless steel ball mill tank, and performing ball milling under an inert gas atmosphere; after the ball milling, annealing alloyed alloy powder by a muffle furnace, and sintering the annealed alloy powder into a block by a discharge plasma sintering furnace, and then rolling the block into a desiring thickness; and finally using a muffle furnace to perform heat treatment on the rolled copper alloy, and cooling in the furnace to obtain the oxide dispersion strengthened copper composite material. The oxide dispersion strengthened copper composite material prepared by the method has uniform distribution of nano-oxide particles with an average size of 5-6 nm, the powder production rate is over 95%, and the process is simple and easy to operate.

The invention discloses a multisystem compatible receiver frequency point selecting method which comprises the following steps: firstly, defining a parameter value, coding and establishing an initial frequency point set, then acquiring the fitness of each frequency point, judging whether a termination condition is met, and finally outputting a global optimal result. The invention has low requirements on the problem property and high computing efficiency, can solve a complicated optimization problem at limited cost, is suitable for a condition with large computing amount, has better global search performance, enables the process of solving the problem to be conveniently parallelized, and improves the processing efficiency. The invention can be used in the field of satellite navigation and communication, especially is suitable for the design of a satellite navigation multisystem compatible receiver, and has good application prospects in the aspects of military and civil use.

The present invention is one electric stopping brake assistor for hand stopping brake system of automobile with braking handle. The electric stopping brake assistor consists of an assisting motor, a clutch, a planetary speed reducing mechanism, an angle sensor, and an electronic control unit with built-in first set angle and second set angle. The assisting motor has its output shaft connected through the clutch to the planetary speed reducing mechanism; the planetary speed reducing mechanism has its output shaft connected through a coupling to the rotation shaft of the braking handle in the hand stopping brake system and one angle sensor connected for detecting the rotation angle of the handle, and the assisting motor and the angle sensor are connected electrically to the electronic control unit. The electric stopping brake assistor has simple structure and capacity of assisting the driver's stopping.

The invention discloses a method for determining the surface roughness of an impression material through adopting a bulk amorphous alloy new material. The bulk amorphous alloy has the thermoplastic forming capability within the supercooling liquid phase interval, so that low-temperature impression treatment can be realized through utilizing the characteristic, and the material is a plastic material completely during impression and is changed into a rigid material with high strength after the impression. Consequently, compared with the traditional material, the bulk amorphous alloy impression material can high precisely reproduce the surface appearances of samples, and the impression can be stored for a long time stably; and moreover, the method is simple and convenient to operate, does not generate pollution, meets the requirements of social sustainable development and has a wide application prospect.

The invention discloses a manufacturing method for a mini quartz glass atomic gas chamber. The method comprises the following steps of encapsulating alkali-metal atoms into a glass micro-cavity and filling inert gas; manufacturing a lower-layer encapsulation block, a middle-layer encapsulation block and an upper-layer encapsulation block; assembling the lower-layer encapsulation block, the middle-layer encapsulation block, the upper-layer encapsulation block and the glass micro-cavity and sealing to form a closed cavity; heating a plurality of closed cavities at the temperature higher than the softening point of the glass micro-cavity and stopping heating until the glass micro-cavity structure is destroyed; and cutting the closed cavities after stopping heating based on the middle-layer encapsulation block in order to form the mini quartz glass atomic gas chamber. Through setting of the glass micro-cavity, the degree of purity of the atomic gas chamber is guaranteed, the problems of large difficulty of the conventional mini atomic gas chamber manufacturing process and poor degree of purity of the cavity are solved; through simultaneous heating of the closed cavities, the mass production of the atomic gas chamber is realized, and the defects of high requirements and difficulty in mass production of the conventional mini atomic gas chamber manufacturing equipment are made up.

The invention relates to the technical field of unmanned aerial vehicle oblique photography detection, and particularly discloses an unmanned aerial vehicle high-precision full-frame oblique photogrammetry device. The device comprises an unmanned aerial vehicle body. A plurality of rotor arms are uniformly connected to the unmanned aerial vehicle body; a driving motor is fixed on a lower surface of an outer end part of each rotor arm; and propellers are arranged at an upper end, penetrating through the rotor arms, of an output shaft of the driving motor, a rectangular block is connected to thecenter of the lower surface of the unmanned aerial vehicle body, an adjusting motor is fixedly arranged on the front side surface of the rectangular block, a rotating cavity is formed in the rectangular block, and a large gear is arranged in the middle of the rotating cavity. According to the device, a photographing angle and a wide angle can be adjusted in real time in actual use; and the shooting angles of the four second high-definition cameras can be adjusted at the same time through one adjusting motor, one adjusting motor does not need to be arranged at the end of each second high-definition camera, equipment cost is greatly reduced, and more importantly, a load capacity of the whole unmanned aerial vehicle is effectively decreased.

The invention belongs to the technical field of oil sludge cleaning, and particularly relates to an oil sludge cleaning agent and a preparation method and application thereof. The oil sludge cleaningagent comprises the following components in percentage by mass: 5 to 20% of phosphate, 5 to 20% of inorganic salt, 10 to 20% of silicate, 2 to 5% of alkali, 2 to 4% of cocoanut fatty acid diethanolamide, 2 to 4% of nonylphenol polyoxyethylene ether, 2 to 4% of fatty alcohol-polyoxyethylene ether phosphate and 2 to 4% of oil stain removing agent, with the balance being water. The oil sludge cleaning agent disclosed by the invention is high in oil washing rate, relatively low in requirement on the properties of oil sludge and wide in application scope.

The invention relates to the technical field of stereo display, and discloses a liquid crystal parallax barrier and a stereo display device and a correction method thereof. A first electrode structureis arranged on the side, opposite to a liquid crystal layer, of a first substrate of the liquid crystal parallax barrier, the first electrode structure comprises multiple driving electrode sets whichare arranged in a periodic mode, each driving electrode set comprises at least two driving electrode layers, each driving electrode layer comprises multiple driving electrodes which are arranged at intervals, a gap portion is arranged between each two adjacent driving electrodes, and the driving electrodes and the gap portions of each two adjacent driving electrode layers are oppositely arranged;the driving electrodes which apply the first preset driving voltage in each driving electrode set form a shading portion, the driving electrodes which apply the second preset driving voltage in eachdriving electrode set form a photic portion, and when the driving electrodes which apply the first preset driving voltage and the driving electrodes which apply the second preset driving voltage change, the positions of the shading portions and the photic portions change correspondingly, so that over dependency and excessive demands on the laminating accuracy can be effectively avoided.

The invention relates to a plastic packaging bag and belongs to the field of processing of plastic products. The plastic packaging bag is prepared from raw materials in parts by weight as follows: 45-65 parts of polyhydroxybutyrate, 22-35 parts of polyvinyl butyral, 13-20 parts of polyethylene, 8-17 parts of chitosan, 12-20 parts of starch, 6-11 parts of lignin, 5-12 parts of cotton-linen fiber, 6-11 parts of montmorillonoid, 1-3 parts of a stabilizer, 2-4 parts of a coupling agent and 1-5 parts of a plasticizer. The plastic packaging bag is mainly prepared from bio-degradable polyhydroxybutyrate and polyvinyl butyral matched with chitosan, lignin, cotton-linen fiber and montmorillonoid, the toughness of the plastic packaging bag is guaranteed, the plastic packaging bag has a good degradation effect and influence on surrounding environment is reduced. The processing process is simple, convenient and low in manufacturing cost and has good economic benefits.

The invention discloses a chelating agent washed-off soil improvement method which includes the steps: planting aquatic plants into chelating agent washed-off soil; applying fertilizers for cultivation to improve chelating agent washed-off soil. The aquatic plants are alligator alternanthera herbs and/or myriophyllum spicatum. The alligator alternanthera herbs and/or myriophyllum spicatum are used for improving the chelating agent washed-off soil for the first time, degradation activity of enzyme and microorganisms in the restorable soil can be improved, chelating agents remaining in the soil can be biologically degraded, toxicity of the soil is remarkably reduced, the problem of difficulty in growth and survival of plants in the chelating agent washed-off soil is solved, and the method has the advantages of low cost, high practicability, good improvement effect and the like.