50results about How to "The solution cannot be applied" patented technology

The invention relates to a reinforced concrete frame-supporting column, in particular to a frame-supporting column with high strength steel bars and super high strength concrete. The frame-supporting column overcomes defects that axial compression ratio limits of ordinary reinforced concrete frame-supporting columns and steel reinforced concrete frame-supporting columns are low, protective covers fall easily under earthquake force, longitudinal bars and steel flanges are easy to bend, the columns are difficult to repair after an earthquake, and high strength steel bars and super high strength concrete cannot be applied, and defects that node constructions of steel reinforced concrete and steel pipe concrete frame-supporting columns are complex, the steel pipe concrete frame-supporting columns do not constrain concrete fully, and steel pipes are easy to bend. The frame-supporting column comprises longitudinal high strength steel bars, high strength closed stirrups and self-compaction super high strength concrete; and constraints include that stirrup spacing of concrete protective covers in whole concrete ranges from 30mm to 35mm, outer surfaces are aligned to outer surfaces of concrete frame-supporting columns, and the stirrup spacing of longitudinal high strength steel bars is constrained to range from 60 mm to 120 mm. By aid of constraining of closely-matched high strength welding closed stirrups on the whole concrete, mechanical properties of super high strength concrete are improved, anti-seismic properties of the column are improved, and the frame-supporting column has a wide application prospect in high-rise or super high-rise structures.

The invention belongs to the technical field of communication, and relates to a high-speed parallel multi-path fractional delay filter implementation technology based on Lagrange interpolation. According to the invention, a fractional delay filter can be applied under the high-speed parallel multi-path condition and meanwhile, by using a Lagrange interpolation algorithm, the process of solving a filter coefficient is simplified. The high-speed parallel multi-path fractional delay filter implementation technology based on Lagrange interpolation, which is disclosed by the invention, is suitable to implement in high-speed platform, such as a FPGA, a DSP and the like, and is convenient for practical application.

A DOA estimation method based on DFT enhancement in a large-scale array obtains accurate estimation of DOA through combination of DFT and a Taylor expansion algorithm, and comprises the following steps: firstly, for a space signal received by a large-scale antenna array, obtaining initial DOA estimation of the signal through DFT; then, on the basis of obtaining the initial angle, carrying out first-order Taylor series expansion on the array direction matrix at the initial angle, and obtaining a difference value between a real signal angle and the initial angle by utilizing an overall least square method; and finally, adding the difference value to the initial angle to obtain an accurate DOA estimation angle. According to the invention, the characteristics of DFT, Taylor series expansion and large-scale antenna array are ingeniously combined; the technical bottleneck that a traditional subspace algorithm needs huge complexity and is not easy to apply practically when applied to a large-scale antenna array is broken through, the target signal angle can be estimated more quickly and accurately, the operation cost is low, the effect is good, and engineering implementation is easy.

The invention discloses a preparation method of a superabsorbent proton exchange membrane, which comprises the following steps: (1) preparing hollow mesoporous silica microspheres and fluorine-type perfluorosulfonic acid polymers according to a mass ratio of 1:9-99 Stir and mix to obtain a mixture; (2) Add the mixture obtained in step (1) to an extruder for melt extrusion to form a film. The temperature of the casting head is 180-200°C, the screw speed is 20-35r / min, The linear speed of the press is 60-100 cm / min; (3) putting the film obtained in step (2) into a sodium hydroxide solution with a concentration of 0.1-1 wt% for 4-12 hours, and the soaking temperature is 60-80°C, Obtain a sodium-form perfluorosulfonic acid film; (4) put the sodium-form perfluorosulfonic acid film obtained in step (3) into hydrochloric acid with a concentration of 0.1 to 1 wt % and soak for 1 to 6 hours at a temperature of 20 to 30° C. , and then washed with deionized water to obtain a superabsorbent proton exchange membrane. Compared with the solution casting method, the superabsorbent proton exchange membrane prepared by the present invention has higher electrical conductivity and mechanical strength.

The invention discloses a variable speed / variable load rolling bearing fault diagnosis method based on mode conversion, which includes the following steps: establishing a bearing vibration signal model by assuming that the fault rolling bearing vibration signal is composed of at least two signal sources with different distribution characteristics, Then based on the threshold technology and the tail estimation method, the signal is preliminarily separated and analyzed to obtain signal patterns with different distribution characteristics, and then combined with the expectation-maximization theory to establish a hidden Markov model of the signal to obtain the noise pulse, and compare the original signal with it Subtraction to further improve the signal-to-noise ratio of the signal, and finally use the traditional envelope spectrum to analyze the signal to evaluate whether the rolling bearing has a fault and the type of the fault. On the one hand, the present invention overcomes the problem that the vibration signal is difficult to diagnose under the condition of variable load / rotating speed; on the other hand, it solves the problem that the traditional envelope method cannot application problem.

The invention discloses an antibacterial antifogging agent and an antibacterial long-acting antifogging wet tissue prepared therefrom. The raw materials and the mass percentages of each raw material are: special film-forming agent 0.1%-0.5%, antibacterial agent 0.05%- 0.1%, chelating agent 0.01%~0.05%, alkyl glycoside 0.1%~0.5%, emulsifier 0.01%~0.1%, fluorocarbon surfactant 0.01%~0.1%, sodium chloride 0.01%~0.1%, citric acid 0.05% to 0.1%, absolute ethanol 10% to 40%, and water balance; the product of the invention prolongs the anti-fog time to a great extent, and is applicable to various types of lenses at the same time.

The invention discloses a polymer emulsion building waterproof coating and a preparation method thereof. The polymer emulsion building waterproof paint comprises: styrene-acrylic emulsion, dispersant, defoamer, water, flocculant, thickener, drying accelerator, powder, and preservative. The present invention utilizes the low glass transition temperature emulsion, and the polymer emulsion architectural waterproof coating prepared in combination with flocculants and drying accelerators solves the problem that such products cannot be constructed at low temperatures, and reduces the ambient temperature that can be constructed from the current 6°C to 1°C. °C; The polymer emulsion architectural waterproof coating of the present invention does not need to add film-forming agents and plasticizers, and the finally formed waterproof film has stable and long-lasting properties, and there will be no film-forming late stage caused by volatilization and migration of film-forming aids and plasticizers. The problem of performance degradation of the waterproof membrane; the invention is simple to manufacture, low in cost, environmentally friendly and pollution-free, can be mass-produced and applied, and has practicability.

The invention discloses a method and a system for solving the light diffraction transmission problem, and relates to the field of optics. The method includes: constructing a calculation area grid; tracing the chief ray in the calculation area grid, and expanding the first interface of the crystal through which the chief ray passes into an infinite plane; The rays are traced to determine the intersection of other rays and the infinite plane; according to the intersection, it is judged whether other rays are on the same side as the main ray, and if they are on different sides, the virtual rays of other rays are generated, and the virtual rays are assumed to propagate in the crystal. , which follows the same physical propagation law as the chief ray; the diffraction transmission problem is solved according to the chief ray and the virtual ray. The invention can be used for the diffraction transmission calculation process of plane reflection of any shape, has the advantage of strong practicability, and solves the problem that the traditional optical field diffraction transmission solution method cannot be applied in the process of light propagation in non-parallel planes.

The present invention provides an evaluation method for judging the validity of search intent recognition, comprising the following steps: S1, obtaining the total number of word segmentations and information of each word segmentation in the search intent recognition process to be evaluated; S2, calculating separately according to the information The sum of the word frequencies corresponding to each word segment and the inverted document frequency; S3, using the sum of the word frequencies corresponding to each word segment obtained in step S2 and the inverted document frequency to calculate the search intent identification process to be evaluated. Effectiveness score, and then determine whether the search intent recognition process is effective. The present invention also relates to related computer-readable storage media and electronic devices.

The invention discloses a three-dimensional rotary type net-shaped contact body assembly mounting structure, and relates to the technical field of environmental protection equipment. A three-dimensional rotary type net-shaped contact body assembly is directly installed on a tank body, the occupied area does not need to be increased, an equipment room does not need to be built, and various pipelines, valves and air supply devices are not needed. Less land is occupied when sewage treatment plants with the same scale are newly built, and early-stage investment is greatly reduced. According to different scales of sewage treatment plants and different inlet water qualities, the number of the required three-dimensional rotary net-shaped contact body assemblies is different, and corresponding design can be carried out according to the installation number and the occupied area. The problem that an existing three-dimensional net-shaped rotating body device cannot be applied to a newly-built sewage treatment plant with the limited land area is solved, and the cost is greatly reduced.