182results about How to "Fill technology gaps" patented technology

The invention relates to a method for simultaneously measuring the residue of multiple pesticides in cotton by a liquid chromatography tandem mass spectrometry/mass spectrometry method. The method comprises the steps of (1) carrying out sample treatment; (2) measuring by adopting the liquid chromatography tandem mass spectrometry/mass spectrometry method; (3) carrying out a blank test; and (4) carrying out result calculation and expression, namely calculating the contents of all the pesticides in a sample according to a formula: X=CV/m, wherein X represents the contents of all the pesticides in the sample in milligrams per kilogram, C represents the concentrations of all the pesticides in sample liquid obtained by a standard work curve in micrograms per milliliter, V represents the final volume of the sample liquid in milliliters, and m represents the sample amount of the final sample liquid in grams. The measurement method can be used for simultaneously measuring the residue of the multiple pesticides in the cotton by adopting the liquid chromatography tandem mass spectrometry/mass spectrometry method and is simple, convenient, fast, accurate and reliable; the detection limit, the recovery rate and the accuracy of the method are in accordance with the requirements.

The present invention discloses a method for breeding Semanotus bifasciatus (motschulsky) on a large scale and its application for biologically controlling injurou s insects. Said invention utilizes artificial breeding or collection of Semanotus bifasciatus (Motschulsky) from natural world, and uses it as substitute host for breeding Scleroderma sp and Pymeotes sp. by means of culture dish and dactylethrae.

The invention provides a method for detecting the migration quantity of nipagin ester substances in a plastic food package bag. The method comprises the following steps of: making the plastic bag of the size of 10*10 cm<2> by a plastic sample to be detected through a plastic sealing machine, washing the plastic bag by using distilled water, and drying; respectively putting water-based food simulation liquid and olive oil into the plastic bags, and sealing to obtain a water-based food simulation liquid immersed solution and an olive oil immersed solution; performing simple treatment on the obtained immersed solutions to obtain solutions to be detected; performing analysis detection on the solutions to be detected by adopting high performance liquid chromatography (HPLC)/mass spectrum (MS)/mass spectrum (MS) to obtain theoretical measured values of the nipagin ester substances in the samples to be detected; and deducing blank values from the theoretical measured values to obtain actual measured values of the nipagin ester substances in the immersed solutions of the samples to be detected. By the method, the technical blank of detection for the nipagin ester substances in the plastic food package bag in China is filled; and the method has the characteristics of simplicity in operation and high detection accuracy.

The invention provides a high-voltage power transmission line robot. The high-voltage power transmission line robot comprises flexible power wheels which are arranged in pairs and can move along powertransmission cables, power wheel supporting arms and a supporting seat, wherein one end of each power wheel supporting arm is connected with each flexible power wheel; walking arm flexible driving mechanisms are correspondingly arranged on the supporting seat; the other end of each power wheel supporting arm is connected with each walking arm flexible driving mechanism and is hinged on the supporting seat in a swinging state; and an actuator which can be replaced according to operation tasks is also arranged on the supporting seat. The high-voltage power transmission line robot is designed for divided conductors with voltage being higher than 500kv, is capable of ensuring that the flexible power wheels are tightly close to an inspection line during moving, can be adapted to complicated situations of the line, can be better applied to line hardware, has a function of easily lifting and hanging the line, and also naturally has a falling prevention function, is capable of avoiding crossing failure caused by leaving from the line when crossing over poles and towers; the reliability and the stability of a robot platform in use are improved; the inspection efficiency and the safety aregreatly improved; and the equipment reliability is high.

The invention provides a trackability distinguishing method of an infrared sequence image. Infrared image quality features, image gradient features and image texture features are utilized for calculating the single-frame image detectability confidence coefficient of each frame of image in the sequence image, and weighting is carried out to obtain a sequence image detectability confidence coefficient. The invention provides the method for directly calculating the sequence image detectability confidence coefficient by utilizing an image entropy feature and target background feature differences between a front frame and a rear frame in the image. Two methods are both mainly used for infrared target detection and infrared target tracking, and belong to the field of infrared target detection and identification.

The invention relates to a determination method for six residual plant-growth regulators in a bean sprout, especially to a method for simultaneous determination of six residual plant-growth regulators in the bean sprout by using gas chromatography-tandem mass spectrometry. Six plant-growth regulators involved in the invention are composed of 4-chlorophenoxyacetic acid, 2,4-dichlorophenoxyacetic acid, naphthylacetic acid, indoleacetic acid, 2,4-D-butyl ester and indolebutyric acid. The method comprises the following steps: 1) sample treatment; 2) determination, wherein gas chromatography-tandem mass spectrometry is employed; 3) drafting of a standard curve; 4) blank test; and 5) result calculation and description. The determination method employs gas chromatography-tandem mass spectrometry for simultaneous determination of the six residual plant-growth regulators in bean sprout; and the method is simple, convenient, rapid, accurate and reliable, and the lower determination limit, recovery rate and precision of the method all accord with requirements.

The invention relates to a method for building a wireless intersystem electromagnetic interference allowance calculation model. The method for building the wireless intersystem electromagnetic interference allowance calculation model comprises the following steps that firstly, a wireless system which comprises a transmitter and a receiver is selected; secondly, whether the wireless system in the first step meets the condition of frequency elimination or not is judged, wherein if yes, the electromagnetic interference allowance calculation process is not executed, and if not, the third step is executed; thirdly, electromagnetic interference allowance calculation is carried out on the wireless system in the first step. The method for building the wireless intersystem electromagnetic interference allowance calculation model can provide powerful technological support for system EMC designing.

The present invention provides a lithium battery safety valve opening pressure finite element modeling method, belonging to the technical field of lithium battery safety valve performance analysis. The lithium battery safety valve opening pressure finite element modeling method is especially used for simulation analysis of intensity of a lithium battery safety valve, and the intensity is taken asan index to identify a condition of opening event generation of the safety valve to replace an experiment so as to rapidly determine the opening pressure of the safety valve. The lithium battery safety valve opening pressure finite element modeling method can help structure designers with rapid pre-determination and response for rationality of the model design at an initial phase of the design, asimulation result is not influenced by consistence of actual produced products, and the deviation of the actual indexes of the products and design values can be identified to perform manage and control of key feature indexes of the lithium battery safety valve.

The invention discloses a head lettuce cultivation method. The head lettuce cultivation method comprises the following steps: 1, preparing a dedicated insecticide; 2, selecting seeds and sowing; 3, carrying out filed planting; 4, carrying out field management; 5, harvesting: harvesting 40-70 days after filed planting, when leafy heads form and are slightly pressed by a hand to show solid feeling. The head lettuce cultivation method, provided by the invention, fills up the technical blank that the head lettuce only grows in summer and winter, and enables the head lettuce to be cultivated in a whole year, so as to achieve a good benefit.

The invention discloses a radio frequency interference suppression and classification method based on a convolutional neural network. The method comprises: initializing a transmission signal parameter, a target signal parameter and an interference signal parameter of an SAR system, calculating a target signal and an interference signal, superposing the interference signal on the target signal to obtain affected echo signals, and marking an interference type of the interference signal in each echo signal; carrying out discrete Fourier transform on the echo signals to obtain frequency domain forms of the echo signals, and carrying out classification based on a proportion to obtain a training set and a testing set randomly; inputting the training set into a convolutional neural network VGG16for training to obtain a test network; and inputting the testing set in the test network, and verifying a classification result of the testing set by the test network. Therefore, the classification and recognition of the interference signals by the echo signals are realized under the circumstances that the synthetic aperture radar works normally and the key parameters such as the signal parameter,the imaging range and the resolution are not changed.

The invention discloses a defect characteristic extraction and identification method of an AOI system used for bullet apparent defect detection. The method includes the following steps: (1) obtaining a bullet surface image through the AOI system and obtaining a connection domain mark image through the bullet surface image; (2)according to expectation, presetting to-be-detected known defect types and obtaining image characteristics needed in judgment of each kind of defect; (3) associating all needed image characteristics with parameters of the connection domain mark image so as to obtain a corresponding calculation general formula through conversion and presetting standard thresholds of the image characteristics; (4) carrying out image characteristic calculation on each connection domain of the connection domain mark image and comparing the results with the standard thresholds so as to determine a defect type. Through analysis of a pullet structure and apparent defects of the bullet structure, the method designs the image characteristics of different kinds of defects in a targeted manner when the AOI system is used to detect the apparent defects and carries out datamation of the image characteristics and then comparative judgment of image processing data is combined so that an effective and comprehensive defect result is obtained and a technical blank in the field is filled.

The invention discloses a frequent sub-graph mining and optimizing method for a single uncertain graph. The frequent sub-graph mining and optimizing method comprises: acquiring the single uncertain graph; enumerating all sub-graphs of the single uncertain graph according to the single uncertain graph; using part of implication graphs in all implication graphs of the single uncertain graph as sample graphs by appointing; respectively calculating an existence probability of each sample graph of the single uncertain graph by using a calculation reuse method, and calculating an expected support degree of each sub-graph on the corresponding sample graph of the single uncertain graph by using the calculation reuse method; judging whether the sub-graphs are frequent sub-graphs according to the expected support degree of each sub-graph on the corresponding sample graph of the single uncertain graph and the existence probability of each sample graph of the single uncertain graph; and outputting all the frequent sub-graphs.

The invention provides a method and equipment for automatically refining noodles, belong to the technical field of noodle making machines, and solve the problems that in the prior art, a machine is complex, and blanks exist in the prior art. According to the method and equipment for automatically refining noodles disclosed by the invention, a transglutaminase adding pipe is arranged on a dough mixing bucket; the dough mixing bucket is sequentially connected with a dough leavening box, squeezing roller wheels, protrusion point roller wheels, a folding machine, a beating machine, a secondary dough kneading and transporting loop and output roller wheels through a conveyer belt; a humidity probe and a gluten structure observing lens which can extend into the inner part of dough are arranged inthe dough leavening box; the dough leavening box is provided with a thermostat; and the transglutaminase adding pipe, the conveyer belt, the dough leavening box, the squeezing roller wheels, the protrusion point roller wheels, the folding machine, the beating machine, the secondary dough kneading and transporting loop and the output roller wheels are controlled by a computer to automatically work. The method and equipment disclosed by the invention have the advantages that the production efficiency is improved, production cost is reduced, technique blanks are filled, and the method and the equipment have creativity.

The invention relates to an automatic parking sensing method fusing a look-around image and a laser radar, and the method comprises the following steps: 1, obtaining an original image through four fisheye cameras disposed on a vehicle body, and carrying out the distortion correction of the original image; step 2, by selecting four mark points with known ground coordinates, respectively performing projection transformation on the original image after distortion correction to obtain four aerial view images projected to the ground; 3, splicing the four aerial view images based on the spatial position consistency of the mark points to obtain an all-round view image; step 4, inputting the look-around image into a parking space detection model for parking space detection to obtain pixel coordinates of the parking space; 5, the global coordinates of the parking spaces are obtained according to the pixel coordinates of the parking spaces, and automatic parking path planning is carried out. Compared with the prior art, the method has the advantages that the tracking algorithm of the parking spaces is simplified, the intelligence and robustness of path planning are improved, and the safety in the automatic parking process is guaranteed.

The invention belongs to the technical field of purline processing equipment and relates to a C/Z-type integrated cold roll forming machine which comprises a feeding platform, a guiding device, a leveling device, a punching device, a cutting device and a forming device. The forming device can realize automatic C/Z-type conversion and comprises a front forming roller, a rear forming roller, a front conversion component and a rear conversion component which are symmetric in structure, the front conversion component comprises a power part, a rotating shaft, an angle seat and a conversion roller mounted on the angle seat, the angle seat and the conversion roller are mounted on a rack between an upper transmission shaft and a lower transmission shaft through the rotating shaft, the rear conversion component comprises an angle seat and a matching roller mounted on the angle seat, and the matching roller is mounted on the rack between the upper transmission shaft and the lower transmission shaft through the angle seat. The C/Z-type integrated cold roll forming machine can realize automatic C/Z-type conversion and automatic specification adjusting.

The invention relates to a method for measuring the residual amount of pollutants in tea, in particular to a method for measuring the residual amount of anthraquinone in tea with a gas chromatography-mass spectrum/mass spectrum method. The method for measuring the residual amount of anthraquinone in tea with the gas chromatography-mass spectrum/mass spectrum method includes the following steps of 1, sample processing; 2, measuring, wherein a standard working solution and a sample solution are injected under the set gas chromatography-mass spectrum/mass spectrum condition. The method for measuring the residual amount of anthraquinone in tea with the gas chromatography-mass spectrum/mass spectrum method is simple, convenient, rapid, accurate and reliable, and the limit of detection, the recovery rate and the precision degree all meet requirements.

The invention discloses a method for determining the dissolution rate of a polysaccharide-iron complex by using an ultraviolet-visible spectrophotometry. The method comprises the following steps: diluting a sample to be detected with water; dissolving for time t and filtering; adding equal reacting weight or overweight of hydrochloric acid into a filtering solution; heating to react; taking out a product after the reaction and cooling to a room temperature; then adding equal reacting weight or overweight of a hydroxylamine hydrochloride solution; after the reaction, adding a 1,10-phenanthroline solution and reacting to generate an orange complex; then determining the absorbance at the wavelength of 510nm by using the ultraviolet-visible spectrophotometry; and then calculating by a conventional method to obtain the content of iron in the sample to be detected so as to obtain the dissolution rate of the sample to be detected in the time t. The method for determining the dissolution rate of the polysaccharide-iron complex is strong in specificity, good in accuracy and practical and simple, and can be used for determining a dissolution curve and the dissolution rate so as to compare the dissolution consistency in a batch and between batches.

The invention discloses an experiment device for simulating natural gas hydrate formation well cementation, and relates to the technical field of unconventional oil-gas reservoir development. The experiment device comprises a kettle body, a gas liquid pressurizing injection system, a cement paste injection system, a temperature control system and a data processing system, wherein the kettle body comprises a kettle tube and a kettle cover; a first space used for being filled with formation skeleton simulation materials and a second space used for being injected with cement paste are formed inside the kettle tube; the second space is positioned between the first space and the kettle cover; the gas liquid pressurizing injection system communicates with the second space through a second pipeline, and is used for injecting the cement paste into the second space; the temperature control system is used for controlling the temperature of the kettle tube and the kettle cover; and the data processing system is used for collecting temperature or pressure data in the first space and the second space, and processing and analyzing the data. The experiment device realizes the in-situ test in aspects of conduction laws of well cementation cement paste hydration heat in the well cementation process in the hydrate containing formation near the well wall, the influence of the well cementation cement paste hydration heat on the formation temperature and hydrate stability, and the like.