106results about How to "Analytical data is accurate" patented technology

The invention relates to a device and a method for detecting and controlling a slag state of a converter. The method comprises the following steps of: combining a mass spectrometer PLC (Programmable logic Controller) and an oxygen lance real-time control program of a second-level computer of the converter into an industrial Ethernet, wherein the mass spectrometer PLC is connected with a gas sampling device; adding an oxygen lance real-time control communication data module in a first-level PLC (Programmable logic Controller) of the converter; and additionally arranging an oxygen lance real-time control button in an operation picture; controlling the oxygen lance position and the oxygen flow of an oxygen lance at real time according to data in the communication data module by the first-level PLC control program of the converter. The mass spectrometer can accurately analyze data and ensures detection accuracy. The invention has high measuring and controlling accuracy, stops the phenomena of running slag and drying, has reasonable programming design, realizes real-time quantitative survey, controls a slag melting state of the converter, increases the yield and the production efficiency of molten steel of the converter, reduces the workload of operating workers for cleaning the slag, avoids the injury of personnel and equipment for running the slag and reduces the production cost of the converter.

The invention relates to a method for detecting the ash content of tobacco, which belongs to the technical field of tobacco analysis and detection. The method specifically comprises the following steps: weighing a certain amount (correct to 0.0002g) of crushed tobacco samples with fineness of 30 meshes; putting the crushed tobacco samples into a quartz fiber crucible, firing the crushed tobacco samples in a microwave muffle furnace for 20 minutes at a temperature of 500 DEG C, then taking out the fired tobacco samples and cooling the fired tobacco samples to room temperature in a dryer, accurately weighing; and subtracting the water content of the tobacco from the weight of the tobacco to obtain the ash content of the tobacco. The method provided by the invention is simple and has the characteristics of low cost, high efficiency, accurate data analysis, safe operating environment, and capability of reducing harms to operators.

A method of detecting volatile organic compounds in soil is provided. The method is characterized in that: the method includes detection of polycyclic aromatic hydrocarbons, esters and organochlorines; the polycyclic aromatic hydrocarbons are detected by liquid chromatography; the esters are detected by adoption of GC-MS; and the organochlorines are detected by gas chromatography. Before detection, the soil is subjected to pretreatment; and the pretreatment includes adding a weighed soil sample into a digestion tank, adding an extraction liquid, putting the digestion tank into a heating jacket, and putting into a microwave-assisted extractor. The method analyzes the volatile organic compounds in the soil. According to the method, relatively more comprehensive organic compound components in the soil can be obtained, solid foundations are laid for analysis of soil organic compound components and contents by a large-scale instrument, and more comprehensive and more accurate analysis data is provided.

The invention relates to an on-the-spot rapid detection device in the safety production field. The hazardous gas comprehensive detection device of the invention comprises a gas sampling module, a detection device and a sampling pipe which is used to perform remote sampling to a limited space with safety potential. Remote gas sampling is performed in the limited space by using the invention and the detection equipment is used to perform rapid and qualitative or quantitative analysis, thus providing accurate analysis data for operation staff and avoiding accident occurrence caused by blind operation in the limited space.

During the rubber mixing process, Mooney viscosity index is used as the in-situ key parameter for judging and controlling the mixing process, and multifunctional regression mold between the mixing process parameter and the Mooney viscosity index is established. Then, the real-time mixing process information is acquired and the in-situ Mooney viscosity index is reported. The said adaptive rubber discharging control method includes compensating rubber discharging and tracking rubber discharging control method. The mixing control model based on the on-line rubber material quality forecasting and real-time data processing has the advantages of low cost, being reasonable, accurate data analysis, etc. and is the effective way and optimal scheme for control in banburying production.

The invention discloses a multi-channel congenital heart disease rapid screening device and a screening method thereof. The multi-channel congenital heart disease rapid screening device comprises a handheld type gun body, a sleeve, a heart sound sensor array, an environment noise collector, an oxyhemoglobin saturation collecting sensor and a displaying screen. The sleeve is detachably connected toa gun head of the handheld type gun body, the heart sound sensor array is integrated on the front end face of the sleeve, the heart sound sensor array is arranged according to the position where a signal needs to be collected, the environment noise collector is arranged on the side wall of the sleeve, the displaying screen is arranged above a handheld part of the handheld type gun body, the oxyhemoglobin saturation collecting sensor is connected with the handheld type gun body, and an internally-arranged circuit board and a lithium battery are arranged in the handheld type gun body. Comparedwith the prior art, the multi-channel congenital disease rapid screening device and the screening method thereof have the beneficial effects that the detection process of congenital heart disease is simplified to a large extent, rapid collecting and intelligent analysis of heart disease data are achieved, and the rapid screening device is a novel device which can be applied to newborn congenital heart disease screening.

The invention relates to a special sampling device for an online chromatographic analysis system to mainly solve problems of bad analytic result accuracy, bad analytic result stability and bad analytic result repeatability caused by middle and high voltage seepage, condensation obstruction, cracking and the like in acquisition and transmission of a sample in present online chromatographic analysis. The device is characterized in that connection pipelines 54, 55, 56 and 57 which can independently control and adjust the temperature are adopted to respectively let samples in reactors 1, 2, 3 and 4 to into six-way valves 21, 22, 23 and 24; and the samples are respectively acquired by quantitative rings 25, 26, 27 and 28, are carried by carrying gases 29, 30, 31 and 32 to enter the shunting introduction port 36 of a gas chromatograph, and are transmitted from a sample outlet to sample tanks 41, 42, 43 and 44 through two-way valves 37, 38, 39 and 40 respectively. The device well solves the problems through above technical scheme, and can be used for the sample acquisition in online chromatographic analysis.

The invention discloses an intelligent equipment automation identification system. The system comprises a moving ring monitoring system and lower-hanging intelligent equipment. The moving ring monitoring system and the lower-hanging intelligent equipment are connected through FSU equipment. The FSU equipment is provided with intelligent identification equipment. The intelligent identification equipment automatically identifies and matches with a model of the lower-hanging intelligent equipment through a polling instruction module, an initial model matching module and a characteristic value retrieval module. By using the system, intelligent identification of a communication parameter and an intelligent equipment access model is realized so that moving-ring intelligent equipment access construction and maintenance possess high intelligence and operation feasibility is increased.

The invention provides an online pretreatment device of chromatography gas samples, which is mainly used for ethylene cracking furnace sample gas online pretreatment. The pretreatment device is of a box-type structure, is arranged between the outlet of an online analytical sampler of the ethylene cracking furnace and an online chromatograph. The pretreatment device is mainly composed of a buffer settling tank, a visible discharge tank, a gas filter, a pressure regulating valve, a clean switching valve, an electrical heating system and an electrical insulation component. The water, solid impurities and heavy hydrocarbon liquid droplets in the chromatograph gas sample can be removed after processing so that the gas sample can be output to online chromatograph by a stable flow.

The invention discloses a feed protein detection method and aims to provide a protein detection method high in analysis speed and accurate in data analysis.The feed protein detection method is characterized by including the steps of 1, sample digestion, 2, ammonia distillation, 3, detection of the distillation step, 4, titration, 5, blank determination, and 6, calculation.The feed protein detection method belongs to the technical field of chemical detection.

The invention provides an online pretreatment device of chromatography gas samples, which is mainly used for ethylene cracking furnace sample gas online pretreatment. The pretreatment device is of a box-type structure, is arranged between the outlet of an online analytical sampler of the ethylene cracking furnace and an online chromatograph. The pretreatment device is mainly composed of a buffer settling tank, a visible discharge tank, a gas filter, a pressure regulating valve, a clean switching valve, an electrical heating system and an electrical insulation component, wherein ultramicro nanostructure with low surface tension is used for the inner surface of connecting lines. The water, solid impurities and heavy hydrocarbon liquid droplets of the chromatograph gas sample can be removed after processing so that the gas sample can be output to online chromatograph by a stable flow.

The invention discloses a method for one-time and simultaneous measurement of five preservatives in fruits. The method includes the steps: (1) preparing mixed standard solution (substrate standard); (2) extracting samples; (3) preparing liquid to be measured; (4) measuring liquid chromatography. According to the method, pretreated extracting agents and cleaning agents are improved, a dispersion solid-phase extraction technique replaces a solid-phase extraction cartridge purification technique, computer measurement is performed by a combined organic flowing phase, a gradient elution program and a wavelength detection technique, correction is performed by the substrate standard, and the five preservatives can be rapidly and accurately measured once.

The present disclosure relates to a method for providing a customized educational content by an electronic device, the method including: a step a of generating a set of tags of sub-learning elements by listing a learning element of a particular subject in a tree structure, and designating analysis groups of the tags; a step b of generating structural information of a question by indexing an incorrect-answer tag to each of distractors of the question; a step c of inquiring about a result of a user test so as to calculate a user conquest rate for each of the analysis groups; and a step d of providing a user-customized question by using at least one of the structural information of the question and the user conquest rate.

The invention provides a non-methane total hydrocarbon detection system and method based on a single valve. The non-methane total hydrocarbon detection system based on a single valve comprises a sample loop, a chromatographic column and a detector. The ports of only one multi-way valve are respectively communicated with the two ends of the sample loop, the two ends of the chromatographic column, sample gas, carrier gas and the detector. The carrier gas is selectively communicated with one end of the sample loop and one end of the chromatographic column, and the other end of the sample loop is selectively communicated with the sample gas and the other end of the chromatographic column. An adsorption tube is connected with the chromatographic column in series. During sample introduction, gas in the sample loop sequentially passes through the adsorption tube and the chromatographic column, and the adsorption tube adsorbs non-methane hydrocarbon. A temperature control unit is used for heating and refrigerating the adsorption tube. The system has the advantages of simple structure and the like.

The invention discloses a detection method of a child Jiegan traditional Chinese medicine preparation. The content of indigowoad leaves and the content of platycodon roots in the child Jiegan traditional Chinese medicine preparation are determined with high performance liquid chromatography. The method is convenient to operate, analyzed data are accurate, and the product quality is safe, stable and controllable.

The invention provides a video capture and processing method for teaching and training on baseball batting by aiming at the current situation of lack of means for measurement key parameters of batting point position and the like during teaching and training on baseball batting. By means of acquisition of video images and adoption of video processing technology for automatic measurement of relevant parameters, accurate analysis data can be provided for baseball teaching and training, and accordingly baseball teaching and training efficiency can be better improved.