446results about How to "Improve elimination effect" patented technology

The invention discloses a method for eliminating noise of a long-distance microphone array and a noise-eliminating system. In the invention, the signals collected from two microphones are treated with respect to beam forming, and then the intensified target phonetic signals and the weakened target phonetic signals are obtained; whether target phonetic signals exist in the signals collected from the two microphones is further tested; the update of the adaptive filter coefficient is controlled based on the test result; and lastly, based on a controlled adaptive filter coefficient, the obtained intensified target phonetic signals and the weakened target phonetic signals undergo an adaptive filter process. According to the invention, the performance of noise elimination is greatly improved without affecting the quality of the target phonetics even in case that the microphones are not increased in number.

The invention discloses a bdellovibrio bacteriovorus for preventing and curing rice bacterial diseases and application thereof. The invention can obtain bdellovibrio bacteriovorus BDFM05 by separationand ultraviolet mutation. The bdellovibrio bacteriovorus BDFM05 is combined with oligosaccharide to obtain bdellovibrio bacteriovorus for preventing and curing crop bacterial diseases. The inventionapplies bdellovibrio bacteriovorus BDFM05 to prevent and cure crop bacterial diseases for the first time. The bdellovibrio bacteriovorus prepared by the method has better rice bacterial diseases preventing and curing effect than common Saisentong, has no toxicity or pollution, is safe to natural enemies of crop diseases and pests, produces no pathogenic bacteria resistance, has no toxic or side effects to people and animals, improves the quality and safety of agricultural products and conforms to the requirements of people on healthy and green food and sustainable-development for agriculturalproduction.

The present invention is directed to mutant Salmonella sp. having a genetically modified msbB gene in which the mutant Salmonella is capable of targeting solid tumors. The invention is also directed to Salmonella sp. containing a genetically modified msbB gene as well as an genetic modification in a biosynthetic pathway gene such as the purI gene. The present invention further relates to the therapeutic use of the mutant Salmonella for growth inhibition and / or reduction in volume of solid tumors.

A method for an eNB to transmit a downlink signal to a User Equipment (UE) is disclosed. The method includes transmitting information about a data transmission power within an OFDM symbol in a data region of a downlink subframe to the UE. The information about the data transmission power is determined according to a specific condition and the specific condition includes at least one of presence / absence of a Cell-specific Reference Signal (CRS) within the symbol and a modulation scheme or a Modulation and Coding Scheme (MCS) of the symbol. The downlink subframe is a Non-Zero Power Almost Blank Subframe (NZP ABS) in which signals are transmitted at a lower transmission power than a transmission power of a normal subframe on downlink.

The invention relates to a hot-rolling production method for low-nickel austenitic stainless steel coils, which is specially used for rolling low-nickel austenitic stainless steel coil products with the thicknesses of 2.5-16mm. The technological process comprises grinding, heating, high pressure water dephosphorization, rough rolling, finish rolling, laminar cooling and coiling. The steel coils are made of low-nickel austenitic stainless steel that comprises the following components in percentage by mass: less than or equal to 0.15 percent of C, 8-11 percent of Mn, less than or equal to 0.045 percent of P, less than or equal to 0.03 percent of S, less than or equal to 1.0 percent of Si, 13-17 percent of Cr, 1.0-2.0 percent of Ni, less than or equal to 0.8 percent of Mo, 0.1-0.20 percent of N, 0.5-1.5 percent of Cu and the balance of Fe. The hot-rolling production method can be used for producing low-nickel austenitic stainless steel coils without the defects of edge crack and surface crack, and the yield of the low-nickel austenitic stainless steel coils is increased.

The present invention is directed to mutant Salmonella sp. having a genetically modified msbB gene in which the mutant Salmonella is capable of targeting solid tumors. The invention is also directed to Salmonella sp. containing a genetically modified msbB gene as well as an genetic modification in a biosynthetic pathway gene such as the purl gene. The present invention further relates to the therapeutic use of the mutant Salmonella for growth inhibition and / or reduction in volume of solid tumors.

A pond-lake heavy-metal pesticide fertilizer pollutant solidifying removing agent relates to the technical field of disinfectants, and is composed of the following raw materials: 450-600 parts of montmorillonite, 150-300 parts of silicate clinker, 80-150 parts of quicklime, 50-100 parts of modified starch, 10-30 parts of plaster, 3-6 parts of glucoside, 5-10 parts of alum, and 3-8 parts of calcium chloride. The beneficial effects comprise that the employed raw materials are abundant and cheap, the preparation technology is simple, the agent is applicable to pollution cleaning of large-scope water body of ponds, lakes and rivers, is capable of rapidly thoroughly eliminating organic harmful substances, chemical pesticides and harmful microbes and heavy metals in water body, has improving eliminating effect on total phosphorus and total nitrogen in eutrophic water, has growth-controlling effect on algae in water body, and has water-bottom anti-permeation effect and effect of preventing heavy metals from permeating and polluting water resource.

The invention provides a laser radar. The laser radar includes a laser emitting module, a light splitting module, a scanning module and a receiving module. The laser emitting module is used to emit a pulsed laser beam; the light splitting module is used to divide the pulsed laser beam into N beams of incident light beams , and transmitted to the scanning module, where N≥2; the scanning module is used to reflect N beams of incident light beams to three-dimensional space, and is used to receive and reflect N beams of incident light beams reflected by the target to be measured in three-dimensional space. wave light beam; the receiving module is used to receive and process N beams of echo beams; the spectroscopic module and the scanning module correspond to form N sub-scanning fields of view, and the N sub-scanning fields of view form the total field of view of the lidar through field splicing. The laser radar of the present invention uses a spectroscopic module, so under the premise of satisfying the scanning field of view of the laser radar, less than N light sources can be used to reduce the cost of the laser radar, reduce internal heat generation, and reduce the volume of the laser radar.

The embodiment of the invention discloses an audio signal processing method and system, an audio interaction device and computer equipment. The method includes the following steps: performing echo cancellation on an echo signal in an acquired audio input signal to obtain an audio residual error signal of the audio input signal; performing noise cancellation on a noise signal in the audio residual error signal to obtain an audio enhancing signal after noise cancellation; and performing residual noise signal detection on the audio enhancing signal, and if a residual noise signal exists in the audio enhancing signal, filtering out the residual noise signal. By utilization of the method, the echo signal and the environmental noise signal in the audio input signal during audio interaction can be removed, detection and filtering of residual noise are realized at the same time, influence of environmental noise on an audio interaction process is effectively suppressed, and an effect of cancelling echoes and noise in the audio interaction process is improved, thereby improving the performance of an audio interaction device in cancelling echoes and noise.

The invention provides skin-care cleansing oil. The skin-care cleansing oil is prepared from components of raw materials in percentage by weight as follows: 20%-70% of grease, 5%-35% of lecithin, 5%-15% of alpha hydroxy acid, 3%-6% of geranium essential oil, 0.2%-0.4% of phytosterol, 0.05%-0.2% of bisabolol, 1%-5% of a moisturizing agent and 0.1%-0.6% of rosemary leaf extracts, and the sum of the components is 100%. On the premise of excellent cleansing capability, the skin-care cleansing oil as a whole has very excellent and powerful skin care efficacy of exfoliating, allergy resistance, oxidation resistance, moisture keeping, skin brightening, skin moistening, little irritation and the like through synergetic matching of the components and addition of a natural lecithin surfactant, alpha hydroxy acid, the geranium essential oil, bisabolol, phytosterol and other functional ingredients.

The invention discloses an oil gas field exploitation used compound inhibitor and the preparation method. The compound inhibitor contains imidazolinyl organic phosphate, 2 - N-acid butyrate -1, 2, 4-tricarboxylic acid, thiourea, cetylpyridinium chloride. The mixture proportions of all constituents by weight can meet the specified contents of all active substances. The preparation method is that the 2 - N-acid butyrate -1, 2, 4 - tricarboxylic acid is added into imidazolinyl organic phosphate; thiourea is added into and dissolved into water; the solutions obtained by sub-steps are mixed together and are added into the cetylpyridinium chloride; after evenly stirring for 50-90 minutes and keeping the temperature rang within 15-45 DEG C, the inhibitor of the invention is produced. The compound inhibitor uses multifold medicaments for synergia, can prevent scale formation, can kill bacteria or inhabit bacteria from growing with less usage, can be applied to wide range, and can perform excellent efficiency under complex water quality condition.

An exhaust gas-purifying catalyst system is provided with a plurality of catalyst layers including a first and a second catalyst layers, supported on a support structure. The first catalyst layer comes into contact with an exhaust gas stream firstly among the plurality of catalyst layers. The second catalyst layer is provided adjacent to the first catalyst layer. The first catalyst layer contains a first noble metal active component including rhodium, together with a powder of a barely soluble barium compound in an amount of 0.05 mol to 0.2 mol per volume in liter of the support structure. The second catalyst layer contains a second noble metal active component.

The invention provides an indoor noise elimination device. The indoor noise elimination device comprises a noise collector, a backward wave frequency transmitter and a controller. The noise collector is used for measuring the waveform and frequency of external noise in a preset direction and transmitting external noise collection signals. The backward wave frequency transmitter is used for attenuating or offsetting noise energy and can emit backward sound waves with the same frequency as the external noise in the direction opposite to the direction of the external noise, or can form a wave attenuating energy field region on a noise transmission channel, wherein the wave attenuating energy field region can prevent the external noise from entering a room. The controller is used for receiving the external noise collection signals and controlling the working status of the backward wave frequency transmitter according to the external noise waveform and frequency corresponding to the external noise collection signals. According to the indoor noise elimination device, the noise collector is used for measuring the external noise, and the controller is used for controlling the backward wave frequency transmitter to eliminate the noise, so that active elimination of the noise is achieved, the effect of noise elimination is improved, and the noise pollution is reduced.

A self-interference elimination method based on power detection and loop delay calculation includes the following steps of firstly, measuring parameters of a self-interference loop channel, namely, transmitting a set of training sequence signals, calculating the time delay produced after self-interference signals are transmitted through the loop through the public loop delay algorithm, and calculating the changes of the receiving power and the transmitting power of the self-interference signal in a digital signal processing circuit; secondly, eliminating self-interference produced in the communication process, namely, generating a set of corresponding compensation signals which conduct quantization and delay along with transmitted digital signals according to the measured parameters of the self-interference loop channel in the first step when communication and data sending start, and then enabling compensation signals to subtract the self-interference signals to eliminate the self-interference signals in the communication process when the received self-interference signals arrive at the digital signal processing circuit.

The invention provides a multi-channel signal processing system, a multi-channel signal processing chip, a method thereof, a manufacturing method thereof, a filtering device, an external signal processing card and a signal transmitting and receiving device. The multi-channel signal processing system comprises a filtering unit which is arranged on a signal transmitting end and a feedback unit which is arranged on a signal receiving end; the filtering unit comprises a signal synthesis unit and a filter, and the signal synthesis unit inputs a signal waiting for transmission; wherein, the filter is used for filtering a crosstalk source signal of the signal waiting for transmission; the signal synthesis unit is used for synthesizing the signal waiting for transmission and the crosstalk source signal after filtering; the feedback unit feeds back according to the received signal waiting for transmission, wherein, the filter is also used for performing subsequent filtering according to information which is acquired by feedback. The invention can self-adaptively cancel a far end crosstalk signal.

The invention discloses a fingerprint detection circuit which comprises a plurality of detection units arranged in an array. The fingerprint detection circuit is characterized in that summation units are further included, each detection unit comprises a first detection unit and a second detection unit, the first detection units and the second detection units are connected with the summation units, and the summation units carry out summation on output signals of the second detection units and output signals of the first detection units to eliminate substrate signals in the output signals of the second detection units and obtain useful signals comprising fingerprint information. According to the fingerprint detection circuit, at least one detection unit is selected as a neutralizing unit, and the output signals of other detection units and the output signals of the detection unit which is used as the neutralizing unit are subjected to summation to eliminate the substrate signals in the output signals of the detection units and obtain the useful signals comprising the fingerprint information. Compared with the prior art, the eliminating capacity of the substrate signals is improved, and fingerprint identification precision is further improved.

The invention provides a pickup method of a microphone array, which is applied to long-distance voice recognition. The pickup method of the microphone array sequentially performs delay compensation, gain compensation, beam forming, post-filtering and gain control on a target voice received in the microphone array, wherein through delay compensation, the time point for the microphone array to receive the target voice is ensured to be consistent; through gain compensation, signal amplitude difference caused by inconsistency of microphones is reduced; through beam forming, coherent noises in a target voice signal are eliminated; through post-filtering, diffusion noises in the target voice signal are eliminated; through gain control, a part with relatively small remote recording volume is amplified, so that recognition by a recognition engine is facilitated. By the pickup method provided by the invention, the recognition rate of the voice signal can be significantly increased. The invention further provides a processor capable of executing the pickup method and a storage medium thereof.

The invention discloses a power-off ghosting elimination control circuit and a control method thereof and a liquid crystal display device. After voltage rectification and voltage division through a rectification and voltage division module, switch control signals are outputted; when an alternating-current power supply is in power failure, voltage of the switch control signals is reduced to be notlarger than preset voltage, and a voltage division control module is controlled to output first-level discharge control signals; in power supply through the alternating-current power supply, the voltage of the switch control signals is increased to be larger than the preset voltage, and the voltage division control module is controlled to output second-level discharge control signals; only under the control of the first-level discharge control signals, a level switch module outputs gate-on signals to all TFT gates in a liquid crystal display panel to control on of TFTs. Therefore, by detectionof voltage of the alternating-current power supply after rectification and voltage division, all TFTs in a liquid crystal display panel can be turned on when the alternating-current power supply is in power failure, and power-off ghosting elimination effects are improved.

The invention discloses a process for welding electronic microcomponents based on a multi-temperature gradient. The process is simple, convenient, efficient, stable and reliable in processing quality, good in welding flowability and little in welding hollows. The process is realized by the following technical scheme: designing the temperature gradient of welding fluxes according to melting points of different welding fluxes and respectively manufacturing welding flux slices at different temperature gradients from a secondary high temperature to a minimum temperature; dividing a function substrate and a transition parent plate on each electronic microcomponent into welding surfaces of the welding fluxes at different temperature gradients and coating a welding flux film coating layer on the welding surfaces directly and respectively by sputter coating; arranging welding flux thickness control pins at more points on the welding surfaces of the electronic component; laminating the electronic microcomponents (1), the welding flux slices (3) and the substrate component (5) sequentially, putting into a clamp with a counter-recoil pressure holding mechanism and putting the clamp into a furnace for vacuum welding; firstly completing the welding at a high temperature gradient, and then protecting other surfaces, which are not used for the welding at the next temperature gradient, of the substrate component, and coating one welding flux film coating layer on the welding surfaces respectively by the sputter coating at the next temperature gradient.

The invention provides a formaldehyde eliminator and a plaster board with formaldehyde elimination and the preparation method. The formaldehyde eliminator comprises the following weight proportion material: 500 to 650 share dispersed medium, 20 to 160 share acid compounds, 100 to 400 share multi-amine compounds, 10 to 80 salt compounds, 5 to 20 share polyvinyl alcohols, and 0.1 to 5 share acetic acid acetyl acetic esters. The formaldehyde eliminating preparation has the advantages of low cost, simple production technology and convenient use. The plaster board with formaldehyde elimination not only provides with formaldehyde elimination, but also do not influence the other properties of the plaster board and provides with the virtue of formaldehyde eliminating in the environment rapidly and the eliminating effect is good and long lasting.

The invention provides an image stitching method, an image stitching device, electronic equipment and a computer readable storage medium. The image stitching method comprises the steps that an image sequence obtained through continuous shooting is acquired; a motion target in the image sequence under a dynamic background is detected based on an optical flow method; a first image and a second imageto be stitched are extracted from the image sequence; image processing is performed on the first image and the second image to obtain a first processed image and a second processed image, wherein image processing comprises image registration; and based on the detection result, image fusion is performed on the first processed image and the second processed image to obtain an image after stitching.The technical scheme is beneficial for improving the elimination effect of ghost.

The invention discloses ozonized borneol tea oil. The ozonized borneol tea oil comprises ozone, borneol and tea oil; the tea oil per 1L includes 30 to 50g of borneol; the total input of ozone in tea oil per 1L is controlled to be 13.5 to 20.0g under temperature of 25 to 30 DEG C and pressure of 0.5 to 1.5bar. According to the ozonized borneol tea oil, the raw materials are cheap and easy to be obtained, the antibacterial effect can be obviously improved, the effects of diminishing inflammation, relieving pain and sterilizing are great, the wound healing is effectively promoted, the recovery of patients is sped up, a patient can easily accept, the ozone can be stably and slowly released, escherichia coli, staphylococcus aureus, candida albicans and the like can be eliminated within a short time, and good effect is particularly shown on treating chronic wounds like diabetic foot and acute wounds.

The invention discloses a formaldehyde elimination agent and a preparation method thereof. The formaldehyde elimination agent comprises the following components in percentage by weight: 5-15% of Alfa-cyclodextrin grafted oligopeptide, 1-5% of silver-loaded nanometric anatase type titanium dioxide, 0.1-0.5% of phytoncide, 0.1-.05% of a dispersing agent, 0.1-0.5% of a penetrating agent and the balance of deionized water. The preparation method comprises the following steps: adding an Alfa-cyclodextrin grafted oligopeptide mixed dispersing agent into deionized water, and stirring, so that a mixed solution A is obtained; and adding a phytoncide stock solution and the penetrating agent into the mixed solution A, uniformly stirring, adding the silver-loaded nanometric anatase type titanium dioxide, and uniformly stirring, so that a finished product is obtained. The formaldehyde elimination agent disclosed by the invention has good permeability, and can deeply permeate into the interior of a material to further adsorb and degrade harmful substances at deep layers; and the used raw materials have the characteristics of extensive source, environmental friendliness, wide application range, low treatment cost, simplicity in application and no secondary pollution.

Embodiments of the present application disclose a method and a device for eliminating video captions. The method comprises the following steps of: obtaining a target video with subtitles to be eliminated, identifying an initial subtitle area of a video frame in the target video, and generating an initial subtitle mask image corresponding to the initial subtitle area; determining a target subtitlemask image corresponding to the current video frame according to the initial subtitle mask image corresponding to the current video frame and the initial subtitle mask image corresponding to the adjacent video frames of the current video frame; wherein the pixel value of the pixel point at the specified position in the target subtitle mask image is obtained according to the pixel value of the pixel point at the specified position in the initial subtitle mask image corresponding to the initial subtitle mask image corresponding to the current video frame and the initial subtitle mask image corresponding to the adjacent video frame of the current video frame; according to the target subtitle mask image corresponding to the current video frame, the current video frame is subjected to subtitleclearing processing. The technical proposal provided by the embodiment of the present application can improve the elimination effect of the video caption.

The invention discloses a stereo echo cancellation method and system based on a neural network, and the method comprises the steps: enabling the system to input three audio signals: a microphone signal, a left channel reference signal played by a stereo loudspeaker, and a right channel reference signal played by the stereo loudspeaker; performing short-time Fourier transform on the three paths ofaudio signals to obtain three paths of frequency domain signals, compressing the three paths of frequency domain signals to form frequency band energy information, taking the three paths of frequencyband energy information as input of a neural network model, and outputting an ideal probability masking IRM value through the trained neural network model, wherein the neural network model takes a setIRM value as a training target; obtaining frequency domain information after echo cancellation according to the IRM value obtained through calculation and the frequency band information energy valuecorresponding to the microphone signal; and carrying out inverse short-time Fourier transform on the frequency domain information to obtain time domain information, and completing echo cancellation. According to the invention, an artificial intelligence-deep learning method is adopted to replace a traditional complex stereo echo cancellation algorithm, and stereo echo cancellation in voice communication is realized.

The invention discloses a Smear effect processing method of a CCD (Charge-Coupled Device) sensor, which aims to solve the technical problem of low Smear effect eliminating capability of a traditional Smear effect correcting method. The invention adopts the technical scheme that the concrete position information of a Smear effect generation region is judged by utilizing the statistic information of global image gray to eliminate the dependency on carrying out Smear effect correction by known relevant parameters of a camera. In consideration of the generated relation of a Smear effect image and an original image, background modeling is carried out on the original image and a Smear effect region according to the original image and the gray characteristics of generating the Smear effect region, the Smear effect image is estimated, and the influence of factors such as illumination, noise and the like on the image is considered by means of the image characteristics of the original image. The invention more truly reflects the image characteristics of generating a Smear image current frame and improves the Smear effect eliminating capability.

The invention discloses a method for eliminating image noise, comprising the steps: a sub-block image to be processed generates a plurality of image blocks, adjacent image blocks contain image information of same position; transformation of a two-dimensional transform domain is conducted on the image blocks to obtain a coefficient matrix of the two-dimensional transform domain and form a three-dimensional array; transformation of a one-dimensional transform domain is conducted on the three-dimensional array to obtain a three-dimensional transform domain coefficient; threshold operation is conducted on the obtained three-dimensional transform domain coefficient, and then inverse transformation of a transform domain is conducted to obtain the processed image block information; and image information of the same position in the processed image blocks is averaged to obtain a first processed image. The invention also discloses a device for eliminating image noise. In the invention, pixel information of a plurality of adjacent image blocks contained in one image block is utilized and the pixel information of the same position is averaged, thus avoiding feature matching error caused by conducting feature matching on the image blocks, and being capable of effectively improving the effect of image noise elimination and the image quality.

The invention discloses a speed sensorless control system based on a sliding-mode observer of a Kalman filter. The system comprises an inverter module, a PMSM module, a first Clark transformation module, a Park transformation module, a second Clark transformation module, a Kalman observer module, a first comparator module, a first PI adjusting module, a second comparator module, a second PI adjusting module, a third comparator module, a third PI adjusting module, a Park inverse transformation module and an SVPWM module; the revolving speed and the rotor position are estimated by adopting the sliding-mode observer of the Kalman filter, and speed regulation of the motor is controlled by estimating the rotor position and the rotor speed. According to the speed sensorless control system, the rotor position and the revolving speed information of the motor are acquired by replacing a mechanical sensor with a speed sensorless control algorithm, therefore, errors in closed loop feedback information are reduced, the calculation amount of a sliding-mode observer control method is decreased, and the system is easily achieved on engineering.

The invention discloses a bactericide for preventing and curing crop bacterial diseasess as well as a preparation method and application thereof. In the preparation method, oligosaccharide is added into bdellovibrio bacteriovorus solution to be evenly mixed to obtain the bactericide for preventing and curing crop bacterial diseasess. The invention applies bdellovibrio bacteriovorus solution for preventing and curing crop bacterial diseases for the first time, fills the vacancy of researching and developing bdellovibrio bacteriovorus at home and abroad and adds new species for biopesticide. Asbdellovibrio bacteriovorus has the characteristics of broad cracking pattern and quick growth and has the outstanding capability of eliminating various pathogenicbacteria and bacteria, after combinedwith oligosaccharide, the bdellovibrio bacteriovorus strengthens crop resistance, greatly improves pesticide effect and enlarges the preventing and curing spectrum of bacterial diseases. The bactericide prepared by the invention has no toxicity or pollution, is safe to natural enemies of crop diseases and pests, pathogenic bacteria have small possibility of producing resistance, so that the invention overcomes 3R problems brought by abusing antibiotics and avoids the defects of serious chemical pesticide pollution and ecological balance damage at present.

The invention discloses a low-viscosity solvent-free epoxy graphene glass-flake coating and a preparation method thereof, and aims to solve the problems that the conventional solvent-free epoxy graphene glass-flake coating has a high requirement on a construction thickness, is not ideal in corrosion resistance, needs to apply heating spraying and has a large number of coating working procedures. The coating consists of two components specifically as follows: the component I is prepared from the following raw materials in percentage by mass: 37 to 40 percent of epoxy resin E51, 2 to 4 percent of an active diluents NC513, 0.2 to 0.6 percent of a dispersing agent BYK-9077, 15 to 23 percent of functional resin 312, 14 to 15 percent of titanium dioxide R2196, 20 to 25 percent of glass flakes, 0.2 to 0.3 percent of graphene, 0.2 to 0.5 percent of a rheological agent BYK-410, 0.2 to 0.4 percent of a leveling agent F40 and 0.2 to 0.6 percent of a defoaming agent 6800; the component II is prepared from the following raw materials in percentage by mass: 75 to 94 percent of a curing agent CK-5106, 5.6 to 24.2 percent of a curing agent D0590, 0.2 to 1.5 percent of graphene and 0.2 to 1.0 percent of the dispersing agent BYK-9077. The coating can be directly used for coating by a conventional construction process without being heated, and the construction is rapid, simple and convenient.