30results about How to "Determination of comprehensive" patented technology

The invention discloses a method for rapidly measuring an inorganic element in tobacco by a near infrared spectrum. The method comprises the steps of establishing a non-linearity calibration model and measuring the inorganic element in a to-be-measured tobacco sample. The method provided by the invention has the advantages that a non-linearity modeling technology is introduced in the process of establishing the calibration model, and a partial least squares modeling method based on kernel conversion is adopted, so that the influence of a non-linearity relation between a tobacco spectrum and the content of the inorganic element is eliminated, the requirement on rapid measurement on the inorganic element in a large number of tobacco samples is met, and rapid analysis and in-time feedback of the quality of tobacco are realized.

The invention provides a landscape interaction control system and method so as to solve the technical problems of single performance of an existing landscape control system and severe resource waste due to repeated construction. The system comprises a fountain landscape unit, a loudspeaker box power amplifier unit and a light illumination unit. The system also comprises a data acquisition unit for collecting tourist flow, tourist action and tourist distribution information, and a total controller. The data acquisition unit is in communication connection with the total controller through a data acquisition card. The total controller receives data information collected by the data acquisition unit and controls the fountain landscape unit, the loudspeaker box power amplifier unit and the light illumination unit to function cooperatively. The Landscape interaction control system overcomes the defects that a conventional landscape is static and single, has the advantages of being open, dynamic and flexible, can enable a plurality of functions of tourism, entertainment and media of the landscape to be integrated and realizes interaction between persons and the landscape, and enhances enjoyment and experience feeling.

The invention belongs to the field water treatment, and particularly relates to a water body and a pretreatment method of nitrosoamine compound in suspended matter of the water body. The pretreatment method comprises the following concrete steps: 1), obtaining the water sample and a suspended matter sample thereof; 2), performing extraction on nitrosoamine compound in the water sample; 3), extracting nitrosoamine compound in the suspension of the water sample. The pretreatment method of nitrosoamine compound in suspended matter of the water sample covers pretreatment process and extraction on nitrosoamine compound in the water sample and suspended matter of the water sample, so that a support is provided for more accurate and comprehensive measurement on concentration level of nitrosoamine compound in the water body; moreover, the pretreatment method further has the advantages of high extract content, and treated sample has a high enrichment degree on nitrosoamine compound, thereby being beneficial for subsequent detection.

The invention discloses a determination method for mine tailing filling grain class distribution rules. A customized organic glass determination device is used, natural sedimentation and permeation of tailing slurry with an actual concentration are simulated, a water content test and a grain class screening test are conducted on sediment tailing at different heights, test data is sorted and analyzed, and thus the tailing grain class distribution rules of a sand silo or a filled goaf are obtained. According to the scheme, the method has the advantages of being high in reliability, easy and flexible to implement, wide in application range and the like, overcomes the defects in the background art and can be used for directing actual production. Meanwhile, the invention discloses the determination device for the mine tailing filling grain class distribution rules.

The invention discloses a detection method of brexpiprazole starting material related substances. The detection method comprises steps as follows: a, preparation of a reference substance solution; b, measurement of the reference substance solution; c, preparation of a test solution; d, measurement of the test solution. With the adoption of the detection method of brexpiprazole starting material related substances, through screening with multiple processes, impurities A1-1, A1-2, A1-3 and A1-4 in a brexpiprazole starting material 7-hydroxy-2-quinolone can be effectively separated and detected, the specificity is high, detection results are accurate and reliable, and the method has multiple advantages of being high in precision, good in stability, good in repeatability, convenient to operate, shorter in time and the like. Compared with existing methods, the method has the advantages that various impurities of samples can be measured more comprehensively, the detection time is appropriate, the results are more reliable, and the method is suitable for popularization and application.

The invention discloses a GC-IMS pear production place distinguishing method based on an aromatic substance fingerprint spectrum. According to the invention, a headspace gas chromatography-ion mobility spectrometry instrument is used for detecting pears from different producing areas; GC-IMS sample data are obtained; the GC-IMS sample data is subjected to statistical analysis through LAV analysissoftware and GC * IMS Library Search Software qualitative software of the instrument, and GC-IMS fingerprint spectrums of volatile aroma components of the pears from all production places are obtainedfor distinguishing the production places of the pears. The GC-IMS technology is applied to collection and trace analysis of complex aroma substances in the pears from different producing areas, comprehensive fingerprint information is provided for distinguishing the producing areas of the pears, rapid and accurate distinguishing of the producing areas of the pears from different producing areas is achieved, and theoretical basis and data support are provided for identifying and tracing the producing areas of the pears.

The invention relates to a device for determining soil wind erosion of black soil farmland, and an application method of the device, belonging to the field of wind erosion measurement, aiming at solving the problems that the existing big spring number eight (BSNE) sand collecting instrument is limited in particle size range of collected soil particles and larger in error in the wind erosion measurement value of the northeast black soil area. According to the device for determining the soil wind erosion of the black soil farmland, a trapezoid hollow box body is adopted as a sand excavation box,a ventilation screen is arranged on the top face of the sand excavation box, a ventilation opening is formed in the side face where the narrow side of the sand excavation box is positioned, and a windscreen baffle plate is arranged on the bottom face of the box body of the sand excavation box; the sand excavation box is connected with a sand collection box, so that a sand box assembly is formed;a plurality of bases are fixed on a fixed rod, and support frames are arranged on the bases; the sand box assembly and tail wing wind deflectors are installed on the support frames. The device for determining the soil wind erosion is applied to wind erosion monitoring of the black soil farmland, and the soil sand transport fluxes at different heights are obtained by calculation; the device is easyto operate, small in monitoring error and higher in applicability, and the obtained conclusion is closer to reality.

The invention discloses an underground environment quality determining method and device. The underground environment quality determining method comprises the following steps: detecting types and contents of heavy metals in soil, organic matters in the soil and heavy metals in underground water; respectively corresponding four-level weights according to the types of the heavy metals and the organic matters in the soil and the heavy metals in the underground water; respectively determining corresponding score values according to the corresponding contents of each heavy metal and each organic matter in the soil and the corresponding content of each heavy metal in the underground water; automatically figuring out pollution levels by combining the four-level weights and the score values of each heavy metal and each organic matter in the soil and the four-level weight and the score value of each heavy metal in the underground water, and determining a comprehensive quality of an underground environment. According to the underground environment quality determining method, pollution degrees of the organic matters and the heavy metals in the underground water and the soil are considered, and the comprehensive quality of the underground environment on which the human depends for existence is completely determined and evaluated, so that a scientific basis is provided for evaluation and treatment of the environmental pollution.

The invention belongs to the technical field of power grid stability analysis of a power system, and particularly relates to a system and method for testing a volume time constant of a large steam turbine. The system mainly comprises steam turbine governor valves, a main steam pressure transmitter, a governing stage pressure transmitter, an intermediate pressure cylinder steam inlet pressure transmitter, a low pressure cylinder steam inlet pressure transmitter, a displacement sensor and other measuring devices, a data acquisition module, and parallel experiment function modules additionally arranged in the load command link in control logic. Through testing and data analysis of signals for reflecting the steam turbine volume time constant, the accurate steam turbine volume time constant can be acquired, the reliability of a steam turbine speed governing system simulation model and the accuracy of model parameters of the model are improved, the steam turbine volume time constant can be comprehensively and quickly measured, and the requirements for stability calculation and analysis of a power grid are met.

The invention provides a method for detecting a brexpiprazole related substance, and the method adopts a chromatographic column with octadecylsilane chemically bonded silica as a filler, an acetonitrile solution as a mobile phase A and an ammonium chloride solution as a mobile phase B, and adopts gradient elution to determine brexpiprazole and related substances thereof. According to the method, brexpiprazole can be effectively separated from adjacent impurities and various impurities, the separation degree is high, brexpiprazole and related substances thereof can be accurately detected, the problem that brexpiprazole and related substances thereof are difficult to separate and detect is effectively solved, and therefore it is guaranteed that the quality of brexpiprazole is controllable.

The invention discloses a detection method for a drug capable of treating fever in children. The detection method comprises the following steps of 1) weighing a palmatine hydrochloride reference substance, a berberine hydrochloride reference substance, a liquiritin reference substance and an ammonium glycyrrhetate reference substance, preparing a mixed solution of the reference substances with an alcohol solvent, smashing Linghuang Bao'er pills, mixing the smashed Linghuang Bao'er pills with the alcohol aqueous solution to obtain a test sample solution; 2) measuring the mixed solution of the reference substances with different concentrations, detecting through HPLC to obtain the peak area respectively, making a standard curve to obtain the standard curve of the mixed solution of the reference substances; and 3) detecting the test sample solution through HPLC to obtain the peak area of the test sample solution, and comparing with the standard curve to obtain the content of palmatine hydrochloride, berberine hydrochloride, liquiritin and ammonium glycyrrhetate in the test sample solution. The detection method overcomes one-sidedness that the quality of a drug is determined only by measuring one component, is comprehensive and reliable, and has the advantages of high accuracy, high precision, stability, and relatively good repeatability.

The invention discloses a method for determining phenylpropanoid glycoside substances in a Tibetan medicine Lamiophlomis rotate. According to the invention, the characteristic that phenylpropanoid glycoside can be hydrolyzed to release phenethanol and cinnamic acid compounds is used, various types of phenethanol and cinnamic acid compounds in Lamiophlomis rotata are separated by a high performance liquid chromatography method and determined by using an external standard method, so that accurate determination of phenylpropanoid glycoside substances in the Lamiophlomis rotate can be achieved.

The present invention relates to a method for testing the interaction of a temperature-sensitive random polymer with agglutinin. The method comprises the steps of: preparing a temperature-sensitive random polymer P (DEGMA-co-OVNGlu) solution; preparing an agglutinin protein Con A solution, an agglutinin protein BSA solution and an agglutinin protein RCA120 solution; UV testing the Con A solution,the BSA solution and the RCA120 solution; UV testing the mutual combination of the polymer with Con A, BSA, RCA120; subjecting different concentrations of polymer solutions to a dynamic light scattering test; and adding the agglutinin solution to the polymer solution and then performing a dynamic light scattering test. Compared with other test methods (surface plasmon resonance and isothermal titration calorimetry), the method is easy to operate, low in cost, and fast in test analysis.

The invention discloses a study chair for correcting sitting posture. The study chair comprises a moving base, a stand column, a cushion, a backrest, a master controller, a first power supply and a multi-directional linkage switch; the cushion comprises a shell, a matrix, a base plate, a soft cushion, a vertical supporting spring rectangular deploy and control array, an arc elastic metal sheet rectangular deploy and control ring, a pressure sensor spring deploy and control unit and a vibrator deploy and control unit; the vertical supporting spring rectangular deploy and control array is composed of a plurality of vertical springs distributed in a rectangular array; the arc elastic metal sheet rectangular deploy and control ring is composed of a plurality of arc elastic sheets distributed in a rectangular ring shape, the pressure sensor spring deploy and control unit is composed of four pressure sensor springs correspondingly deployed and controlled in front, rear, left and right of the cushion, and the vibrator deploy and control unit is composed of vibrators correspondingly deployed and controlled in front, rear, left and right directions of the cushion. According to the study chair, a user can be reminded by vibration through the different pressure on the front, rear, left and right parts of the cushion, and thus the user is helped to better correct the sitting posture.

The invention discloses a method for rapidly distinguishing production places of jasmine-fragrance grapes based on GC-IMS fingerprint spectrums. According to the method, a headspace gas chromatography-ion mobility spectrometry combined instrument is adopted to detect the jasmine-fragrance grapes from different producing areas to obtain GC-IMS sample data, the GC-IMS sample data is subjected to statistical analysis through LAV analysis software and GC * IMS Library Search Software qualitative software of the instrument, and the GC-IMS fingerprint spectrums of the volatile aroma components of the jasmine-fragrance grapes from various producing areas are acquired so as to distinguish the producing areas of the jasmine-fragrance grapes. According to the invention, the GC-IMS technology is adopted to perform collection and trace analysis on the complex aroma substances in the jasmine-fragrance grapes in different production places, so comprehensive fingerprint information is provided for production place distinguishing of the jasmine-fragrance grapes, the rapid and accurate distinguishing of the jasmine-fragrance grapes in different production places is achieved, and the theoretical basis and the data support are provided for the production place identification and the source tracing of the jasmine-fragrance grapes.

The invention relates to a methylene blue colorimetric method for determining the concentration of gamma-PGA in a solution. The methylene blue colorimetric method comprises the following steps: (1) preparing a methylene blue and gamma-PGA aqueous solution; (2) methylene blue and a gamma-PGA aqueous solution are subjected to a mixed reaction; (3) carrying out full-wavelength scanning on the mixed solution of methylene blue and gamma-PGA at the wavelength of 200-800nm; (4) judging the type of a full-wavelength scanning spectrum; and (5) calculating the gamma-PGA concentration according to the standard curve. The problem of glutamic acid interference when the gamma-PGA concentration is measured by an ultraviolet spectrophotometric method is solved. The gamma-PGA concentration in the unknown solution is determined by using the methylene blue colorimetric method, the problem of methylene blue interference when the gamma-PGA concentration is determined by using the methylene blue colorimetric method is solved, and the method is convenient, rapid, accurate and reliable and can be used for determining the gamma-PGA concentration in the unknown solution.

The invention discloses a method for determining the content of polysaccharide in a cassia twig and poria cocos capsule, the polysaccharide comprises water-soluble polysaccharide, and the method comprises the following steps: obtaining a cassia twig and poria cocos capsule water-soluble polysaccharide sample to be detected; determining the water-soluble polysaccharide of the cassia twig and poria cocos capsule water-soluble polysaccharide sample to be detected by using an anthrone-sulfuric acid colorimetric method; wherein the step of obtaining the to-be-detected water-soluble polysaccharide sample of the cassia twig and poria cocos capsule comprises the following steps: taking contents of the cassia twig and poria cocos capsule, uniformly mixing, grinding, removing impurities, extracting, and recovering the water-soluble polysaccharide from an extracting solution, so as to obtain the to-be-detected water-soluble polysaccharide sample; wherein the impurity removal comprises the following steps: adding 70%-80% ethanol, carrying out ultrasonic treatment for 1-5 times, and carrying out ultrasonic treatment for 15-25 minutes each time; the extraction comprises the following steps: an extraction mode is selected from ultrasonic treatment, warm immersion or reflux, an extraction solvent is water, the extraction time is 15-120 minutes, and the number of times of extraction is 1-3; the step of recovering the water-soluble polysaccharide from the extracting solution comprises the following steps: concentrating the extracting solution to 3-5mL, adding absolute ethyl alcohol until the alcohol content is 60-80%, and refrigerating and standing for 6-24 hours.

The invention relates to a method for comprehensively testing the fragrant components of crops, which belongs to the technical field of analysis and detection. The invention aims to solve a technical problem of providing a method for comprehensively testing the fragrant components of crops. Fragrant components in wheat, sorghum and maize can be comprehensively and accurately tested with the method. The method for comprehensively testing the fragrant components of crops comprises the following steps of: respectively pre-processing crop samples and capturing the fragrant components of crops with a headspace-solid phase micro-extraction method and a simultaneous distillation and extraction method, then respectively carrying out qualitative analysis through gas-phase color spectrum-mass spectrum and combining analyzed results to obtain the test results of the fragrant components of the crops. The crops refer to the wheat, the sorghum and the maize.