27results about How to "Realize determination" patented technology

The invention discloses a thermal tracing test device and method for determining the comprehensive hydrogeological condition of an aquifer, and the device comprises a water storage system, a medium groove, a heating system, and a distributed optical fiber data collection system. The device is simple in structure and intelligent and convenient to operate, instantaneous / continuous linear heat source excitation can be achieved through the heating system, and the water pressure and temperature change conditions of all positions are monitored in real time through the distributed optical fiber data acquisition system; the comprehensive hydrogeological parameters such as the flow velocity, the flow direction, the permeability coefficient, the thermal diffusion coefficient, the thermal capacity and the heat conductivity coefficient of underground water are studied, the heating system and the distributed optical fiber data acquisition system can be used for indoor tests and field tests, operation is easy and convenient, data precision is high, and practicability is high.

The invention discloses a method for quickly detecting moisture in tobacco leaf processing. 2+ As the precursor material, dimethyl sulfoxide (DMSO) was used as the solvent. Solvent-dependent rhein-based carbon dots were prepared by microwave method. The interaction between water and aprotic solvent DMSO was used to reduce the fluorescence signal of carbon dots. Combined with smartphone RGB signal acquisition technology, a new method with high sensitivity and selectivity for moisture determination was established by using the good linear relationship between moisture content and R value. The detection limit was 5 mg. This method was applied to the detection and analysis of moisture content in tobacco leaf processing, and the results were consistent with those of the reduced pressure drying method. The method is simple, stable and accurate.

The utility model relates to the technical field of hot rod temperature field simulation tests in extremely cold regions, in particular to a hot rod temperature field simulation test device applied to extremely cold regions, which is matched with a frozen soil layer simulation soil sample for use and comprises a test box for containing the frozen soil layer simulation soil sample and a plurality of hot rod units, the plurality of hot rod units are sequentially arranged along the length direction of the test box at intervals of one time, two times and four times of a fixed distance, and are used for testing the influence of the intervals of the hot rod units on the temperature field, so that the conditions of hot rod temperature fields with different intervals can be tested through the hot rod units arranged at different intervals, and the test efficiency is improved. Meanwhile, a conveying pipe and a wire sequentially penetrate through each hot rod unit from bottom to top, fluid in the conveying pipe can take away heat in soil layers with different depths, the effect brought by reducing the temperature of the soil layers is tested, and the wire is connected with sensors at different depths, so that the temperature of the soil layers with different depths is measured.

The invention relates to a method for determining the types of carbon and hydrogen in a hydrocarbon sample by adopting gas chromatography-mass spectrometry. The method comprises the steps of carbon number cutting, calculation of mass fractions of various hydrocarbons in components with different carbon numbers in non-polar components and polar components, carbon number correction and the like. The method disclosed by the invention is low in requirement on an analysis instrument, relatively high in analysis efficiency, relatively low in analysis cost and relatively short in test time.

The utility model relates to a testing device for determining diffusible hydrogen content in deposited metal, which comprises a collecting device, an argon bottle and a vacuum pump, the collecting device comprises a plurality of collecting bottles connected in sequence, the first collecting bottle is a standard blank bottle, and the other collecting bottles are sample collecting bottles; the standard blank bottle is connected with an argon bottle, the tail sample collection bottle is connected with a vacuum pump, and samples are arranged in the sample collection bottles; an air inlet hole and an air outlet hole are formed in a bottle cap of the collecting bottle; a gas inlet hole of the standard blank bottle is connected with an argon bottle through a gas pipe, a gas outlet hole of the standard blank bottle is connected with a gas inlet hole of an adjacent sample collection bottle through a gas pipe 2, a gas outlet hole of the sample collection bottle is connected with a gas inlet hole of an adjacent sample collection bottle through a gas pipe, and the sample collection bottles are sequentially connected to the tail sample collection bottle; the air outlet of the tail sample collection bottle is connected with a vacuum pump through an air pipe. According to the device, the content of diffusible hydrogen in deposited metal can be efficiently measured, batch samples can be measured at the same time, the test period is shortened, and the test cost is greatly reduced.

The application discloses a kind of polybrominated diphenyl ether class substance determination methods, utilize DGT device determination environmental medium (water body, soil and sediment) polybrominated diphenyl ether class substance, with the modified multi-walled carbon nanotube of 0.5-2 microns length of particle size, about 50nm diameter modified carbon nanotube adsorption film is prepared to agarose membrane, the adsorption film is applied to gradient diffusion film (DGT) technology based on, and suitable shell device, diffusion membrane, filter membrane are selected;After adsorption is completed, suitable eluent is selected, and the determination error of polybrominated diphenyl ether class substance is maximized to eliminate;The application preparation process is simple, time is short, determination and subsequent processing procedure is simple and convenient, suitable for in-situ detection of polybrominated diphenyl ether class substance in water body.

The present invention discloses a data drift correction method and system based on linear function, which relates to the field of data processing technology, including: obtaining the measurement data of samples to be corrected based on inductively coupled plasma spectroscopy; obtaining standard substances according to the measurement data of samples to be corrected; constructing a standard curve using the standard substances; correcting the measurement data of samples to be corrected using the standard curve according to the standard substances to obtain calibration sample data; and detecting and obtaining drift correction results according to the calibration sample data. Under the condition of constructing a standard curve once and ensuring high precision and high accuracy of analytical data, the present invention realizes the determination of large batches of samples and improves work efficiency.

The invention discloses a quantitative determination method for trace components in a dimethyl dichlorosilane hydrolysate. Comprising the following steps: carrying out neutralization pretreatment on dimethyldichlorosilane hydrolysate by using a 1.0 mol / L sodium hydroxide solution; weighing 5g of a sample, and adding 50 microliters of an internal standard; taking 0.01-0.5 g of a sample added with the internal standard; setting headspace sampling parameters, and performing chromatographic analysis; and calculating the component content. The method has the advantages of good operability, high safety and low cost, and is suitable for the field of chemical production.

The present application discloses a differential capacitance measurement method, device, electronic device and medium. The differential capacitance measurement method includes: obtaining multiple charging currents corresponding to different moments of a cell to be tested in a preset cell state; wherein the charging current is measured by charging the cell to be tested at a constant voltage after the cell to be tested is connected in series with an external resistor; based on the multiple charging currents, determining the decay time constant in the relationship model of the decay of the charging current over time; obtaining the ratio of the decay time constant to the resistance value of the external resistor to obtain the differential capacitance of the cell to be tested in the preset cell state. The above scheme realizes the measurement of the overall differential capacitance of the cell.

This invention provides a method for detecting and calculating the austenite content in steel based on a permeability meter, relating to the fields of steel and electromagnetics. Based on the theoretical differences in saturation magnetization of different phases in ferromagnetic materials, this invention establishes a theoretical calculation model and detection method for measuring austenite content using a permeability meter. A standard-prepared sample is placed in a magnetic pole shoe, and the magnetic field strength H corresponding to the maximum permeability of the ferromagnetic material is first measured. μ Then at ≥1.5H μ Under a magnetic field strength of J, the polarization intensity of the magnetic field strength at multiple points was measured at continuous intervals. m Then, based on the saturation magnetization approximation law and derivation law, the saturation magnetization Js is fitted and solved. Finally, the austenite content is determined according to the theoretical calculation model of austenite content. The method described in this invention solves the influence of the constantly changing effective magnetic path length of traditional magnetometers on the measurement results. The method for determining austenite content is simple, has a solid theoretical basis, high measurement accuracy, and strong data repeatability.

The invention discloses an X-ray fluorescence determination method for a glass fiber batch. The method comprises the following steps: manufacturing a sample piece to be detected, preparing a calibration sample, manufacturing a calibration sample piece, establishing a working curve of an X-ray fluorescence spectrometer for detecting the glass fiber batch, analyzing the sample piece to be detected, and calculating the mass percent of a glass fiber component. According to the method, a wavelength dispersion X-ray fluorescence spectrometer is adopted for determining the chemical components such as fluorine, boron, sulfur, carbon, silicon and aluminum and the COD content in the glass fiber batch with different formulas, operation is easy and convenient, the analysis speed is high, the measurement accuracy and precision are good, pollution of chemical waste liquid is greatly reduced, and the method is suitable for industrial production. The components of the glass fiber and the sulfur and chemical oxygen demand (COD) in the glass fiber batch are predicted in advance.

The invention discloses a device and a method for rapidly detecting the alcoholic strength of white spirit based on a fluorescent indicator and a smart phone. The method comprises the following specific steps: firstly, preparing a fluorescent indicator stock solution; then, preparing a series of alcohol standard solutions with the alcoholic strength of 10-90%, adding the fluorescent indicator stock solution, photographing and recording fluorescent pictures of all samples by using a smart phone under the irradiation of an ultraviolet light source, and establishing a linear curve between the color channel ratio R / B and the alcoholic strength; and finally, adding the fluorescent indicator stock solution into a white spirit sample to be detected, obtaining a fluorescent picture, and calculating the alcoholic strength of the white spirit sample to be detected by utilizing the established linear curve. According to the method, the alcoholic strength is indirectly measured by using the chromaticity difference of the fluorescent indicator in samples with different alcoholic strength, and the method has the advantages of wide measurement range, small background interference, simplicity and convenience in detection operation and the like.

The invention discloses a relative coordinate positioning method and system for inspection equipment in a large-span steel box girder. The method comprises: calculating the angle between the installation plane of a laser rangefinder pointing obliquely to the ground at a fixed angle and the plane where the side surface of the stiffening rib of the bottom plate of the steel box girder is located; obtaining the installation depression angle of the laser rangefinder and the angle between the side surface of the stiffening rib of the bottom plate of the steel box girder and the bottom plate of the steel box girder, and calculating the transverse angle of the inspection equipment relative to the box chamber of the steel box girder according to the angle; measuring multiple distances with surrounding steel structures by multiple laser rangefinders distributed concentrically and radially, and obtaining the angle between the ray of each measuring point and the transverse diaphragm according to the transverse angle of the inspection equipment relative to the box chamber of the steel box girder; calculating multiple relative distances between the inspection equipment measured at each measuring point and the transverse diaphragms on both sides of the current box chamber of the steel box girder according to the multiple distances and the angle between the ray of each measuring point and the transverse diaphragm, and obtaining the maximum value of the multiple relative distances as the true value.

The invention provides a mannitol raw material quality control method, which adopts a high performance liquid chromatography, and adopts porous graphite carbon as a stationary phase to fill a chromatographic column. And an aqueous solution of 0-0.5% trifluoroacetic acid is adopted as a mobile phase. According to the mannitol content quality control method provided by the invention, mannitol and sorbitol can be separated, the analysis speed is high, and the separation degree is large. According to the quality control method provided by the invention, the chromatographic column can adopt porous graphite carbon as a stationary phase, so that the analysis accuracy and stability are improved. According to the quality control method provided by the invention, an electrospray detector is adopted as a detector, so that the reproducibility is further improved. The quality control method for the mannitol raw material provided by the invention has better specificity, accuracy, stability and reliability, can be used for detecting the content of mannitol in the mannitol raw material and detecting related substances, and realizes the quality control of the mannitol raw material, especially the quality control of medicinal mannitol.

The invention discloses a test device for measuring shear viscosity of sand under confined stress state, including a soil sample confined torsion deformation sample tube, a vertical pressure / displacement application system, and a torsion deformation / torque application system. The soil sample confined torsion deformation sample tube is an inner and outer three-layer structure, including an outer rigid tube, a middle annular friction control stacked ring bearing, an inner vertical friction control stacked ring sleeve, and inner stacked ring inter-ring balls, and the inner vertical friction control stacked ring and the inner ring of the middle stacked ring bearing are processed as a whole; the vertical pressure / displacement application system includes a frame with a guide rail, a loading hydraulic cylinder, a loading arm, a mobile loading beam clamped on both sides on the guide rail, a vertical force sensor, a vertical displacement sensor, a sample upper pressure plate, and a sample lower support plate, and the contact surface between the sample upper pressure plate and the lower support plate and the soil sample is engraved with radial protrusions; the torsion deformation / torque application system includes a servo motor, a reducer, a rotating shaft, a torque sensor, and a coupler connected to the lower support plate.

The present invention discloses a positioning test block and method for measuring the relative positions of the surfaces on both sides of a steel plate. The top surface of the positioning test block is provided with a rectangular long groove, the two ends are provided with sharp angle grooves, a flat bottom hole is provided between the sharp corner top of the sharp angle groove and the rectangular long groove, and the bottom surface of the test block body is provided with blind holes on both sides of the sharp angle groove, and circular magnets are embedded in the blind holes. The method draws a positioning straight line on the surface of one side of the steel plate, and the bottom surface of the positioning test block is coated with a coupling agent and adsorbed on the surface of the steel plate, and the sharp corners of the sharp angle grooves on the two end surfaces coincide with the positioning straight line; an area roughly corresponding to the positioning straight line is found on the surface of the other side of the steel plate and a coupling agent is applied; the area is scanned with an ultrasonic probe to determine the two positions corresponding to the flat bottom hole and mark the center position of the circle; the two centers of the circle are connected and extended to obtain a straight line corresponding to the projection position of the positioning straight line drawn on the surface of one side of the steel plate. The present invention applies the principle of ultrasonic detection technology and uses a positioning test block to measure the relative positions of the surfaces on both sides of the steel plate.

The present invention provides a method for preparing a fluorescent probe molecule 10-methyl-4,6-dioxo-1,4,6,9-tetrahydropyrido[3,2-g]quinoline-2,8-dicarboxylic acid derivative for human G protein-coupled receptor 35 (GPR35) and its application. In the invention, such compounds generally show agonistic activity to GPR35, are specific agonists of human GPR35 receptors, and can be applied to bioluminescence resonance energy transfer (BRET) to test the affinity constants of GPR35 receptors and related ligands. The method has good sensitivity and biocompatibility, solves the problem that general compounds need to be labeled with radioactive ligands in activity tests, can realize the determination of affinity constants of active molecules targeting GPR35, and provides new probe molecules for the study of GPR35 biology, helps to explain the active mechanism of action of related compounds, and provides lead compounds for the study of related diseases.

The invention discloses a method for rapidly detecting total nitrogen and total phosphorus in seawater. The method comprises the following steps: collecting a seawater sample to be detected; adding an alkaline persulfate solution into the seawater sample for digestion; screening out an inorganic nitrogen kit and an orthophosphate kit suitable for seawater quality detection from common nitrogen and phosphorus rapid detection kits in the market; and determining total nitrogen and total phosphorus in the digested seawater sample by using the screened inorganic nitrogen kit and orthophosphate kit, and the like. The method has the remarkable effects that the operation is rapid and convenient, the accuracy is reliable, the total nitrogen and the total phosphorus can be measured at the same time, secondary digestion is not needed, the application scene is not limited, the method is suitable for on-site monitoring of the total nitrogen and the total phosphorus in a sewage treatment plant and a fishery breeding plant, the detection time and the detection cost are greatly reduced, and the detection efficiency is improved.

The invention provides a quality control method of cysteine hydrochloride pharmaceutic adjuvants, which adopts high performance liquid chromatography, a mobile phase A adopts an aqueous solution of trifluoroacetic acid with the concentration of 0.1%-0.5%, a mobile phase B adopts an acetonitrile solution of trifluoroacetic acid, and the concentration of trifluoroacetic acid in the mobile phase B is 0.1%-0.5%. According to the quality control method of the cysteine hydrochloride pharmaceutic adjuvant provided by the invention, effective separation of cysteine hydrochloride and related substance tyrosine thereof can be realized, the separation degree is high, further the content of cysteine hydrochloride and related substance tyrosine can be measured at the same time, and the analysis speed is high. The quality control method for the cysteine hydrochloride medicinal auxiliary material has good specificity, accuracy, stability and reliability, the content of cysteine hydrochloride and related substances can be detected at the same time, the related substance tyrosine can be quantitatively detected, and therefore quality control over the cysteine hydrochloride medicinal auxiliary material is achieved.

A biomarker detection system based on gas generation comprises a closed container, a capillary tube and a scale mark, a magnetic bead-nucleic acid aptamer compound is used for specific recognition and capture of target protein, a platinum nanoparticle-nucleic acid aptamer compound catalyzes hydrogen peroxide to generate oxygen, a gas pressure difference is formed to push a liquid column to move, and the target protein is detected through the scale mark. The concentration of the target protein is measured by reading the length of a liquid column in a capillary tube with naked eyes, and quantitative detection is realized. The detection system improves the detection sensitivity and speed, reduces the operation complexity and cost, has high expansibility, can detect various biomarkers, and is suitable for diagnosis of various diseases such as tumors and the like. The system has the advantages of high sensitivity, rapidness, low cost and wide application prospect.

The present disclosure relates to a coal quality analysis system and method, wherein the coal quality analysis system comprises: a first heating furnace configured to heat a coal sample to volatilize moisture in the coal sample; a second heating furnace configured to heat the coal sample after dehydration by the first heating furnace to volatilize volatile matter in the coal sample and cause reactions of sulfur components, carbon components and hydrogen components; a gas supply assembly comprising: a nitrogen gas source configured to supply nitrogen gas to the first heating furnace, and an oxygen gas source configured to supply oxygen gas to the second heating furnace; and a gas analysis assembly comprising a first branch and an analysis component, a first end of the first branch being connected to an exhaust port of the second heating furnace, a second end of the first branch being connected to the analysis component, the analysis component being configured to measure a content of the volatile matter and determine contents of the corresponding components according to reaction products of the sulfur components, the carbon components and the hydrogen components.

The invention discloses a coke oven preheating hole temperature intelligent measuring device which comprises a preheating hole cover arranged in a coke oven preheating hole, and a first temperature measuring element and a second temperature measuring element which are arranged on the preheating hole cover, the first temperature measuring element is used for measuring the environment temperature, and the second temperature measuring element is used for measuring the temperature in the preheating hole. According to the intelligent measuring device for the temperature of the preheating hole of the coke oven, the ambient temperature of the top of the coke oven can be measured, and a seasonal standard temperature reference value of the ambient temperature can be conveniently determined and calculated; the influence of the external temperature on the furnace temperature can be quantified by utilizing the change of the temperature of the measured preheating hole, and intervention on the standard temperature is formed, so that the influence of the change of the external unknown environment on the furnace temperature is eliminated, and the purposes of avoiding the sudden fluctuation of the furnace temperature caused by the long-time violent fluctuation of the external condition and prolonging the service life of the coke furnace are achieved. The invention further discloses a coke oven preheating hole temperature measuring method.

The invention discloses a charged dust cloud minimum ignition energy and flame propagation testing device and method, the device comprises a support frame, a transparent test box is fixed on the support frame, and a box door is hinged to the top of the transparent test box; the corona discharge system is mounted in the transparent test box and is used for corona discharge; the electric spark release system is mounted in the transparent test box and is used for releasing electric sparks; the object image acquisition system is arranged outside the transparent test box and is used for acquiring explosive object images; the vibration dust raising system is mounted at the bottom of the transparent test box and is used for raising dust; the dust charge capacity test system is arranged outside the transparent test box and is used for measuring the charge capacity and the mass of the dust sample and calculating the dust charge-to-mass ratio; and a terminal control system. According to the invention, the test of the minimum ignition energy and the flame propagation characteristic of the charged dust cloud formed after electrostatic electrification of dust can be realized, so that the influence rule of the dust charge quantity on the minimum ignition energy and the flame propagation characteristic can be obtained.

The present application discloses a method for detecting free protein content in polysaccharide protein conjugate, and the method is operated as follows: after pretreatment, the polysaccharide protein conjugate is labeled with protein labeling liquid and Chromeo P503 fluorescent reagent, after labeling, deionized water is added to terminate the reaction, and then sample detection is carried out; the present application adopts the method of fluorescent labeling to label the protein component in the detection product first, then separates through micellar electrokinetic capillary electrophoresis, and finally detects the free carrier protein tetanus toxoid and diphtheria toxin non-toxic mutant through a laser-induced fluorescence detector (LIF). The present method replaces the Lowry method with CE-LIF to improve the detection sensitivity of the protein; it is easy to realize automation, reduces the operation error, improves the repeatability and quantitative accuracy; the sample usage is small, only a few microliters of solution sample is needed for one-time analysis, so that the detection and analysis of trace samples can be realized; the analysis speed is fast, and the analysis of one sample can be completed within several tens of minutes.

The present invention relates to the technical field of power transmission line construction, and more specifically, to a method and construction method for determining installation parameters of a foundation of an inserted steel pipe type power transmission tower. The method for determining installation parameters comprises: setting a plurality of measurement marks at the upper end face of a flange of a connecting flange located at the upper end of a steel pipe; establishing a plurality of observation reference points on the ground; and obtaining the installation parameters of a steel pipe inserted into a steel pipe type power transmission tower at the foundation of the current tower based on the measurement positions of the plurality of measurement marks at the plurality of observation reference points. The construction method obtains reference data based on the method for determining installation parameters to achieve adjustment of relevant parameters during the construction process. The present invention can quickly, conveniently and accurately provide reference data for adjusting the posture of the steel pipe, and can achieve the determination of the final actual construction parameters.

The invention provides a biomarker visual quantitative detection device and a preparation method thereof. The device realizes rapid, low-cost and high-sensitivity target molecule concentration detection through innovative design. The device mainly comprises a transparent micro-channel structure, a reaction container, a container cover and scale marks. When the reaction container is placed in the forward direction, air pressure of the reaction container and the micro-channel structure is balanced, after the reaction container is reversed, internal liquid seals the micro-channel due to the gravity effect, air pressure of gas generated by chemical reaction is increased, the liquid is pushed to enter the micro-channel, the length of a liquid column is in direct proportion to target concentration, and naked eye reading is achieved. Compared with the prior art, the invention can perform quantitative detection, has the characteristics of high sensitivity and quick operation, does not need instruments and equipment, is simple to prepare, low in cost and wide in application range, and can detect various biomolecules including nucleic acid and protein. The invention provides a novel efficient detection means for the fields of chemical analysis and biological target detection.

The present invention relates to the field of nuclear emergency medical rescue, and provides a neutron dose assessment method and device based on blood sodium 24 specific activity. The blood sodium 24 specific activity-neutron dose conversion coefficient is calculated in advance through a human body digital model. When assessing the neutron dose received by the human body, it is only necessary to measure the sodium 24 characteristic gamma ray counts in the blood sample of the tested person, and finally the neutron dose received by the person is assessed using the measured blood sodium 24 specific activity and the blood sodium 24 specific activity-neutron dose conversion coefficient calculated in advance. Compared with the traditional method, the present invention greatly improves the neutron dose test efficiency and further improves the test accuracy.