34results about How to "The detection method is reasonable" patented technology

The invention discloses a specific primer used for rapid detection of a kiwi fruit soft rot pathogenic bacterium, and a detection method of the kiwi fruit soft rot pathogenic bacteriaum. A problem that existing technology is incapable of realizing accurate and rapid detection of the kiwi fruit soft rot pathogenic bacterium is solved. The specific primer comprises BZY-1 and BZY-2, the sequence of BZY-1 is 5'-CCATCAAACTCCAGTCAGTAAACG-3', and the sequence of BZY-2 is 5'-CTGCGCTCCGAAGCGAGATGTATG-3. The detection method of the kiwi fruit soft rot pathogenic bacterium comprises following steps: (1) DNA of samples are extracted; (2) the sample DNA is taken as a template, and primer BZY-1, primer BZY-2, 2*TaqPCRMasterMix and sterile ultrapure water are added for uniform mixing, and then PCR amplification is performed; and (3) an amplification product is subjected to agarose gel electrophoresis analysis, and the existence of the kiwi fruit soft rot pathogenic bacterium is determined based on the existence of amplification bands. Specificity of the primer is extremely high, only the kiwi fruit soft rot pathogenic bacterium band can be obtained by amplification, so that it is just needed to extract genome DNA from kiwi fruit tissue to be detected for PCR amplification, and the existence of the kiwi fruit soft rot pathogenic bacterium is determined based on the existence of amplification bands in electrophoretograms.

A detection method for closely spaced frequency components of a non-stationary signal, said method comprising the following steps: performing EMD decomposition on the non-stationary signal to be measured, and then obtaining the time spectrum and marginal spectrum of the non-stationary signal to be measured by Hilbert transform; The value of each frequency component is obtained by processing the spectrogram data, and the signals of different frequency components are extracted by filtering method; through AMD decomposition, it is judged whether each frequency component contains multiple frequency values ​​that have not been separated; if the signal has frequency mixing If there is an overlap phenomenon, AMD decomposition is performed on the frequency components to separate signals with similar frequencies; the separated signals are then operated in the order of the above steps until a single frequency signal is separated to ensure that the decomposed signals are all single frequency components. The invention solves the problem that the Hilbert-Huang transform cannot effectively separate two closely spaced frequency component signals, ensures the correct decomposition of effective data of the signal, and improves the resolution precision of the signal.

The invention provides a billiard cue performance detection method and a detection platform, by obtaining the velocity V before the billiard cue hits the ball 1 and the velocity V obtained by the ball after impact 2 , get the force transmission coefficient K of the billiard cue 1 , by obtaining the action time T of the impact force F from the ball in the process of the billiard cue hitting the ball, the impact time K of the billiard cue is obtained 2 , where: K 2 =T. The beneficial effects of the present invention are: a method for detecting the performance of a billiard cue is provided, which can obtain useful parameters in the process of hitting a billiard cue, directly and objectively evaluate the performance of a billiard cue, be used for objective and quantitative evaluation of the performance of a billiard cue, and standardize the judgment of a cue cue. The performance of the billiard cue is reasonable, and the detection method is reasonable; a billiard cue performance detection platform is provided to simulate the hitting process of the billiard cue, the structure is simple, and the design is ingenious. The performance of the rod no longer stays in perceptual knowledge, but has objective and quantitative evaluation indicators.

The invention discloses a method and a device for probing an available bandwidth, belonging to the field of internet technology. The method comprises the steps of: receiving first probing data packetssent by a sending end every preset time period; calculating a delay value of one-way delay of the first probing data packets within the current time period; and when the delay value of one-way delayis determined to change suddenly, taking the receiving rate calculated according to the data volume of the first probing data packets as an available bandwidth within the current time period. The method and the device do not rely on multimedia data packets, but probe based on the first probing data packets special for probing an available bandwidth. Since the first probing data packets do not contain related data of audio and video communication, the loss does not affect the communication quality, and the packet loss probability of each kind of data packets in a network is the same. When the network is congested, in the presence of the first probing data packets, the lost multimedia data packets are less than those in the prior art, so that the audio and video communication quality is obviously improved. Therefore, the probing method is more reasonable.

The invention relates to a method for detecting physical properties of textiles, which comprises sampling three times, selecting at least four weft test pieces and at least four warp test pieces on the same fabric to be sampled each time; The outer edge of the original wire is evenly disassembled, and the width of the test piece is adjusted to 40-60mm; the test is carried out one by one by a tensile testing machine, the test environment is 57% RH, the temperature is 25°C, the pulling speed is 100-150mm / min, the maximum The strength value is 500N, the maximum elongation value is 40-50%, and each test piece is measured with a length of 200-300mm; get rid of abnormal values, and keep the test results of three weft test pieces and three warp test pieces. The invention forms a reasonable and effective detection method, which can objectively detect various tensile test values ​​of the fabric, thereby determining its physical property status, objectively reflecting the breaking ability and tearing ability of the fabric, and is beneficial to improving the product quality of textile production.

The invention provides a method for producing a wide-angle camera module with a non-wide-angle machine, and relates to the technical field of wide-angle camera production. The method for producing a wide-angle camera module with a non-wide-angle machine includes the following steps: S1, making a wide-angle camera module, and placing the finished wide-angle camera module in the main transmission unit for transmission; S2, first detecting the wide-angle camera module The module performs preliminary detection; S3, the second detection unit performs imaging distortion detection on the tested wide-angle camera module. In the present invention, during the production process of the wide-angle camera module, the appearance part of the wide-angle camera module is measured and judged by the first detection unit, and the imaging distortion detection is performed on the measured wide-angle camera module by the second detection unit, so that the non-wide-angle camera module The detection method of the wide-angle camera module produced in Taiwan is more reasonable, so that the quality of the finished product of the wide-angle camera module has been further improved, which is conducive to the long-term development of the enterprise.