31results about How to "Good test reproducibility" patented technology

The invention relates to a method for detecting physical and chemical indexes of a reconstituted tobacco extracting solution and a tobacco extracting paste by a near infrared spectrum detection paper making method, which comprises the following steps of: carrying out the detection of the physical and chemical indexes on collected samples one by one by a standard method to obtain quantitative reference data; scanning and collecting spectrums of all the samples, carrying out spectrum preprocessing for eliminating the influence of noise and baseline drift; then corresponding spectrum data to the reference data of all physical and chemical indexes obtained by the standard method one to one and establishing a quantitative model by a partial least square method and mutual verification; carrying out accuracy and reproducibility inspection and then storing the quantitative model in a computer. When the physical and chemical component content of the reconstituted tobacco extracting solution and tobacco extracting paste samples to be detected needs to be detected, the near infrared spectrum data of the samples to be detected are scanned and collected, and the physical and chemical indexes of the reconstituted tobacco extracting solution and the tobacco extracting paste in the paper making method can be detected by calling the analysis of the quantitative model. The method has rapid and accurate detection and low analyzing cost without damaging the analyzing samples and pollution.

The invention relates to a method for distinguishing paper process reconstituted tobacco products via near infrared spectroscopy in combination with PLS-DA, belonging to the technical field of paper process reconstituted tobacco. The method mainly comprises the following steps: (1) collecting and preparing flaky samples; (2) scanning the spectrum; (3) pre-treating the spectrum; (4) detecting and removing an abnormal value; and (5) establishing and verifying a PLS-DA model. A classification model of reconstituted tobacco products is established by near infrared technology in combination with PLS-DA, and has the advantages of high detection speed, high classification accuracy, high classification efficiency and the like and is used for quickly classifying reconstituted tobacco products with different shop signs, and the established classification model has good classification ability and has important significance on primary online monitoring of quality stability of the reconstituted tobacco products.

The invention discloses a sample for a welding crack sensitivity test. The sample comprises a rectangular sample body, the sample body is provided with long edges and wide edges and is provided with aplurality of first slots extending from the long edges to the middle portion of the sample, the first slots are vertically arranged relative to the long edges, separation distances between the multiple first slots in pairs are equal, a center line in the width direction of the sample is further provided with a welding groove extending in the length direction of the sample, and the cross-sectionalshape of the welding groove is a'y'type. The invention further discloses a welding crack sensitivity test method which performs the welding crack sensitivity test adopting the sample for the weldingcrack sensitivity test. According to the welding crack sensitivity test method, because the sample with the cross-sectional shape of the welding groove being the'y'type, a welding seam root portion notch points to a heat-affected area, cracks craze and extend to the heat-affected area preferentially, and quantitative testing and evaluating can be performed on the cold cracking sensitivity of the welding heat-affected area of a plate material.

The invention discloses a method for measuring cellulose of a reconstituted tobacco by virtue of a near infrared reflectance spectroscopy technique. The method comprises the following steps: (1) collecting and preparing a representative sample; (2) collecting an original spectrum; (3) selecting a correcting sample set and a verifying sample set; (4) measuring a reference value of the sample; (5) carrying out pretreatment on spectrum; (6) establishing a PLC model; (7) verifying the model; and (8) measuring cellulose. The method disclosed by the invention is simple, feasible and fast. By adopting a near infrared spectrum nondestructive detection technology, not only can the analytical efficiency be enhanced and the cost be lowered, but the method also has obvious practicality for accurately measuring the cellulose of the reconstituted tobacco, improving the detection efficiency and objectively reflecting the product quality. The method disclosed by the invention has the advantages of high detection speed, no pollution, greenness and environmental protection, high accuracy, good repeatability and the like, and is suitable for on-site analysis and fast detection of the cellulose of a reconstituted tobacco product as well as online monitoring of fluctuation of product quality.

The invention discloses a method for measuring paper process reconstituted tobacco filling value via near infrared diffuse reflection spectroscopy. The method comprises the following steps: (1) collecting samples; (2) collecting an original spectrum; (3) selecting a correction sample set and a validation sample set; (4) determining a sample reference value; (5) pre-processing the spectrum; (6) establishing a PLS model; (7) verifying the model; and (8) measuring the filling value. The method disclosed by the invention is simple, feasible and fast, the near infrared spectrum non-destructive testing technology can be used for not only improving the analysis efficiency and saving the cost, but also has obvious practicability of accurately measuring the reconstituted tobacco filling value, improving the detection efficiency and objectively reflecting the product quality. The method disclosed by the invention has the advantages of fast detection speed, no pollution, environmental protection, high accuracy and good reproducibility, and is suitable for onsite analysis and fast detection of the reconstituted tobacco filling value and online monitoring of product quality fluctuation.

The invention discloses a method for determining the tensile strength of reproduced tobacco leaves of a papermaking method by a near-infrared diffuse reflection spectrum. The method comprises the following steps: (1) collecting and preparing a sheet-shaped sample with representativeness; (2) collecting an original spectrum; (3) selecting a correction sample set and a verification sample set; (4) determining a sample reference value; (5) pre-treating the spectrum; (6) establishing a PLS model; (7) verifying the model; and (8) determining the tensile strength. The method disclosed by the invention is simple, feasible and rapid; the analysis efficiency can be improved and the cost is saved by adopting a near-infrared spectrum nondestructive testing technology; the detection efficiency for accurately determining the tensile strength of the reproduced tobacco leaves is improved; and the product quality is objectively reflected and the practicability is obvious. The method has the advantages of rapid detection speed, no pollution, greenness and environmental pollution, high accuracy, good repeatability and the like, and is suitable for field analysis and rapid detection of the tensile strength of the reproduced tobacco leaf products, and online monitoring of the fluctuation of the product quality.

The invention provides a method for measuring the heavy metal content of the oyster based on the hyperspectral image technology. The method comprises: preparing a heavy metal contaminated sample; collecting a hyperspectral image of the heavy metal contaminated sample by a hyperspectral image acquisition system; carrying out spectral data extraction and pretreatment; acquiring a heavy metal ion sensitive characteristic band subset; constructing a heavy metal ion content measurement model based on an extreme learning machine; and inputting hyperspectral data of a to-be-measured oyster sample into the heavy metal ion content measurement model and outputting measurement of the oyster heavy metal content. According to the provided method, the heavy metal ion sensitive characteristic band subsetis extracted and the heavy metal ion content measurement model is constructed to detect the heavy metal contamination content of the oyster. During the detection process, complicated pretreatment ofthe sample is avoided; and during the analysis process, no chemical reagent for assistance is required, so that the environment is protected from being polluted. And the complex pollution of several kinds of heavy metal can be analyzed simultaneously.

The invention relates to a method for quantitatively detecting the content of protein in protein viscose. The method comprises the following steps: (1) arranging a test sample in a measuring bottle, and transferring the dried test sample to a constant weight into a conical flask with a stopper; (2) diluting a well-calibrated sodium hypochlorite stock solution to given concentration, arranging the diluted sodium hypochlorite stock solution into the conical flask with the stopper, covering a bottle cover, oscillating the moistened test sample, and arranging the test sample into a constant-temperature oscillation water-bath pot and oscillating at a given temperature; transferring residues into a glass sand core crucible with known drying mass, and washing the residues by utilizing the sodium hypochlorite sodium solution, tertiary water and dilute acetic acid respectively; (3) calculating the content of the protein according to the reduced mass of the protein viscose test sample before and after being processed by sodium hypochlorite. By adopting the method, the weaknesses that the test period is long, the danger in operation is high, toxic and harmful gas is likely to generate, and the like in the classical kjeldah method for measuring the content of the protein can be overcome. The method has the advantages of good test reproducibility, simplicity in operation, accuracy conforming to the analysis requirement, slight environmental pollution and the like.

The invention relates to an ophiocordyceps xuefengensis stroma and an artificial cultivation method thereof. The method comprises the following steps: performing tissue separation for a culture, a wild culture or a stroma obtained after successful cultivation of the culture, inoculating into a slant culture medium, preparing a slant mother strain, then inoculating the slant mother strain into a liquid culture medium, preparing a primary culture, inoculating the primary culture into the liquid culture medium to prepare a spawn, and culturing the spawn in a culture medium for production to obtain the artificially-cultivated ophiocordyceps xuefengensis stroma. The ophiocordyceps xuefengensis stroma and the artificial cultivation method thereof have advantages of simplicity in operation, low cost, experimental reproducibility and the like, are suitable for mass production and have wide development prospect.

The invention belongs to the field of medical equipment, and discloses a multifunctional gastrointestinal surgical examination and treatment instrument which comprises a treatment instrument ring, anexamination and treatment plate, a camera, a stethoscope, a controller, a CPU-Z processor, a distance sensor, an ultrasonic treatment instrument, a headrest, a small massage ball, a magnetic treatmentring, a bed surface, a guide rail, a bed, a bed cushion and a bed support. The treatment instrument ring is placed on the ground, the examination and treatment plate is embedded into the top of the inner side of the treatment instrument ring, and the camera and the stethoscope are embedded into the left of the top of the inner side of the treatment instrument ring. The controller controls a linear motor to move front and back on the surface of a sliding rail, the examination and treatment plate can be manually controlled to automatically reach an affected part and perform diagnosis and treatment, the ultrasonic treatment instrument is used for examination, and the pain of a patient is greatly decreased. The multifunctional gastrointestinal surgical examination and treatment instrument isgood in treatment effect and quite worthy of popularization and use, and achieves the purpose of examination and treatment integration.

The invention provides a construction and detection method of a calibration model for determining the content of effective components in a compound liquorice tablet. The construction method comprisesthe following steps: taking a plurality of compound liquorice tablet samples as a calibration set, and performing near-infrared light scanning to obtain original spectral data of the calibration set;carrying out spectrum preprocessing on the original spectrum data of the calibration set, and selecting a modeling waveband of the effective component to obtain a content characteristic spectrum of the effective component; respectively determining the effective components of a plurality of compound liquorice tablet samples contained in the calibration set by adopting a high performance liquid chromatography to obtain the true content value of the effective components; and associating the obtained content characteristic spectrum with the content true value by using a partial least square method, and establishing a content correction model of the effective component. When the content correction model is used for detecting the content of glycyrrhizic acid in the compound liquorice tablet, background noise and physical factor dryness can be effectively eliminated, the prediction capability is good, and the detection result is accurate; meanwhile, the content correction model also has verystrong applicability.

The invention discloses a small-size closed chamber for measuring evaporative emission of fuel of a motorcycle.The small-size closed chamber comprises a closed chamber box body, gas collection bags, a temperature control device, a hydrogen flame ionization type hydrocarbon analyzer, a pressure adjusting device, a circulation air duct, a fuel tank heating system, a rack and a control platform; a suspended ceiling is arranged at the ceiling of the closed chamber box body, and the gas collection bags are placed on the suspended ceiling; the closed chamber box body is a cubic box body, the circulation air duct and the temperature control device are fixed to the back side of the closed chamber box body, and circulating fans are mounted in the circulation air duct.The closed chamber is good in air-tightness, accurate in measured data and good in test reproducibility.Meanwhile, the closed chamber fully takes particularity of a measured object and price acceptable to domestic enterprises into consideration, on the premise that relevant test laws and regulations are met, independent design and development are conducted, equipment cost is greatly lowered, the engineering purpose of miniaturizing a fuel evaporation closed chamber is achieved, and the closed chamber can meet requirements of national standards.

The invention discloses a chlorosilane pretreatment method, which comprises the following steps: S1, a rectified solution in a polycrystalline silicon production process is subjected to extraction ofa sample liquid; S2, the sample liquid is transferred to a centrifugal tube; S3, the centrifugal tube is placed in a centrifuge; S4, the centrifuge is started for centrifugation; S5, the supernatant liquid in the centrifugal tube after centrifugation is taken; and S6, the supernatant liquid is taken to be analyzed by using a chromatograph. According to the chlorosilane pretreatment method disclosed in the invention, spare part consumption of an injection needle, an injection system and a separation system of a gas chromatography instrument is reduced, and the cost is saved. Through the technology, production analysis data can be effectively provided, production is effectively guided, and a clear judgment basis is provided for the composition content of a dirty material.

The invention provides a prediction model for predicting the density of a wood component by using moth damage information. The model is used to realize the rapid and accurate detection of the basic density of the wood, and provides a fast, accurate, simple and cheap method for the large-scale detection of the material property parameters of wood, so the genetic variation law of the material properties of the wood can be comprehensively known, the great potential of the wood is disclosed, accurate selection can be carried out, studies on the correlation among material property factors of the wood and among the material property factors, a growth factor and a form factor in China are enriched, and the process of genetic improvement of the wood is actually important. The establishment of thebasic density model of the moth damaged wood component overcomes the shortcomings, comprising long detection time, large human operating error and high cost, of conventional detection methods. The method has the advantages of no consumption of chemicals, reduction of harms of the chemicals to human bodies, typical nondestructive analysis measurement, good test reproducibility, high analysis efficiency and good result stability.

The invention relates to a rock debris type identification method, and the method is characterized in that the method comprises the following steps: obtaining a laser-induced breakdown spectrum wavelet transform coefficient of a standard rock debris sample and frequency spectrum data of a photoacoustic signal through pulse high-energy laser, and constructing a rock debris type prediction model byusing the laser-induced breakdown spectrum wavelet transform coefficient and the frequency spectrum data as input signals; obtaining a laser-induced breakdown spectroscopy wavelet transform coefficient of the rock debris sample to be detected and spectral data of the photoacoustic signal by using the same method, and obtaining an identification result of the type of the rock debris sample to be detected by using the constructed rock debris type prediction model. The method has the advantages that two signals generated when the pulse high-energy laser irradiates the rock debris are fully utilized, the two signals are combined, the type of the rock debris to be tested can be accurately obtained, and the method has the advantages of being high in speed, high in efficiency, low in cost, good in test reproducibility, capable of achieving online analysis and the like.