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81results about How to "Improve analysis and detection efficiency" patented technology

Method and device for rapidly and objectively distinguishing real and counterfeit cigarettes

The invention discloses a method and a device for rapidly and objectively distinguishing real and counterfeit cigarettes. The method comprises the following steps: acquiring a weightlessness curve of a to-be-detected cigarette through thermogravimetric analysis; inquiring a standard weightlessness curve related to the to-be-detected cigarette; acquiring the similarity of the to-be-detected cigarette according to the weightlessness curve of the to-be-detected cigarette and the standard weightlessness curve; judging whether the similarity of the to-be-detected cigarette is greater than a predetermined threshold value; judging the to-be-detected cigarette to be a counterfeit cigarette if the similarity of the to-be-detected cigarette is greater than the threshold value; judging the to-be-detected cigarette to be a real cigarette if the similarity of the to-be-detected cigarette is lower than or equal to the threshold value. According to the invention, real and counterfeit cigarettes are identified through thermogravimetric analysis, the cigarettes are not needed to be subjected to complicated pretreatment, no chemical agent is used, so that the system error and the personal error are greatly reduced, the automatic sample feeding can be realized, a large quantity of samples can be analyzed, and the efficiency of analysis and detection is greatly improved.
Owner:CHINA TOBACCO FUJIAN IND

Deoxyribonucleic acid (DNA) fragment amplification and quantitative detection system based on closed reactors

The invention relates to a deoxyribonucleic acid (DNA) fragment amplification and quantitative detection system based on closed reactors, belonging to the technical field of molecular biology detection systems. The DNA fragment amplification and quantitative detection system comprises an amplification unit. A group of closed reactors are arranged in the amplification unit in a matching way. An exciting light device and a fluorescence detection device are arranged on one side of each closed reactor in a matching way. A transmission device which is used for providing power to the closed reactors is arranged at the bottom of the amplification unit in a matching way. The transmission device is connected with a motor. Two or more than two independent constant-temperature areas at different temperatures are arranged in the amplification unit in a matching way. By adopting the technique, the thermal response of reagent samples is improved, the polymerase chain reaction process is accelerated and the experimental period is greatly shortened; the degradation of DNA enzymes is reduced, the amplification sensitivity, accuracy and reproducibility of the samples are improved and the reagent detection linearity range is expanded; the pollution risk during experiments is reduced; the optical path is shortened and the sensitivity and the low background of optical detection are improved; and the low-cost multi-sample multi-channel detection is realized.
Owner:胡惠平

Fully-automatic chemiluminescence enzyme immunity analyzer

ActiveCN103901221ARealize fully automated experimentsFast experimentMaterial analysisModern medicineModular design
The invention relates to a fully-automatic chemiluminescence enzyme immunity analyzer which comprises a fixed working platform, a porous plate, an incubation oscillator, a sample rack, a detection analysis device, a plate washing device and a three-axis movement mechanism, wherein the incubation oscillator and the sample rack are arranged on the upper surface of the fixed working platform; the detection analysis device and the plate washing device are arranged at one side of the fixed working platform, and the detection analysis device comprises a chemiluminescence analyzer and an enzyme immunity analyzer; the three-axis movement mechanism is arranged at the periphery of the fixed working platform, and a sample adding device and a grab mechanism are arranged on the three-axis movement mechanism. The fully-automatic chemiluminescence enzyme immunity analyzer is capable of simultaneously performing an enzyme immunity experiment and a chemiluminescence experiment, and also separately performing the enzyme immunity experiment and the chemiluminescence experiment; meanwhile, by adopting a modular design, a fully-automatic experiment is realized, the experiment speed is high, the detection analysis efficiency is high, and the demand of the modern medicine development is met; in addition, a grab is located with a plate frame through a locating structure, thus rapid grabbing and transferring are realized; meanwhile, a 96-needle plate washing head is adopted in the plate washing device, thus porous rapid cleaning is realized.
Owner:深圳德夏生物医学工程有限公司

Electric wire and cable bending detection testing device

The invention relates to the technical field of pipeline detection equipment, in particular to a wire and cable bending detection test device, which includes a base, and two mutually symmetrical support frames are installed on the base, and rotating shafts are arranged on the two support frames. A turntable is installed on one end of the rotating shaft, and the other end is connected to the second motor, and the second motor is installed on the support frame. In the present invention, a turntable is installed on the rotating shaft between the support frames, and a horizontal plate is installed between the two turntables. , the detection analyzer is installed on the horizontal plate, through the electric telescopic rod installed on the detection analyzer, the horizontal movement of the detection analyzer can be realized, and the rotation of the rotating shaft is driven by the motor to realize the rotation of the detection analyzer on the turntable. By realizing the horizontal reciprocating movement and the rotation in the three-dimensional space of the detection analyzer at the same time, the detection and analysis of the object to be detected by the detection analyzer can be achieved in all directions, and the detection and analysis efficiency and analysis accuracy can be effectively improved.
Owner:合肥华福土工合成材料有限公司

Green tea aroma dynamic fingerprint analysis and aroma type discrimination method based on ion mobility spectrometry

ActiveCN111141860AReduce Assay Analysis TimeAchieve onlineComponent separationGreen teasAroma aroma
The invention discloses a green tea aroma dynamic fingerprint analysis and aroma type discrimination method based on ion mobility spectrometry, and belongs to the technical field of food quality detection. The method comprises the following steps: (1) setting acetone-assisted positive ion mode photoionization ion mobility spectrometry detection conditions; (2) weighing a tea sample, adopting headspace sample injection, and collecting a dynamic fingerprint spectrum which is continuously purged for 3-8 minutes; (3) performing dimension reduction processing on the multi-dimensional original dataof the dynamic fingerprint spectrum obtained in the step (2) to obtain a preprocessed data matrix; and (4) distinguishing and distinguishing different fragrances by utilizing the preprocessed data matrix obtained in the step (3). Green tea sample pretreatment is not needed, so that the detection and analysis time of the tea sample is saved; through ion mobility spectrometry and continuous purgingsample injection, all spectrogram information in a certain period of time can be obtained at the same time, and dynamic fingerprint information is more comprehensive and accurate; and five different fragrances of faint scent, sweet fragrance, tender fragrance, tender chestnut fragrance and cooked chestnut fragrance of the green tea are distinguished and judged.
Owner:TEA RES INST CHINESE ACAD OF AGRI SCI

Rotary iron ore analyzing device

The invention relates to a rotary iron ore analyzing device, which belongs to the field of chemical analysis equipment of iron ores. A weighing platform (4), a heating platform (7) and a cooling platform (6) are at least arranged at the periphery of a rotary workbench, wherein a flask (3) is placed on one platform of the rotary workbench; an arc-shaped left clamping arm (14) and an arc-shaped right clamping arm (15) are arranged at two sides of the flask (3) and are connected with a clamping arm driving mechanism; the clamping arm driving mechanism is used for driving the left clamping arm (14) and the right clamping arm (15) to swing oppositely so as to be tightly clamped and also used for lifting the flask (3) so as to enable the bottom of the flask (3) to be apart from the rotary workbench; a fixing workbench (1) is fixed above the flask (3); a plurality of reagent dropping bottles (8) in which different indicators are contained are fixed on the fixing workbench (1); the flask is always positioned below each reagent dropping bottle; and the flask does not need to be moved during the dropping of various reagents and the adding of water. The rotary iron ore analyzing device realizes improvement in analysis detection efficiency, and is high in degree of automation as well as safe and convenient to operate.
Owner:SHANDONG UNIV OF TECH

Jade identification method based on terahertz time-domain spectroscopy technology

The invention relates to the technical field of jade detection, in particular to a jade identification method based on a terahertz time-domain spectroscopy technology. The method comprises the following steps: S100, establishing a jade classification identification model; S200, preparing a to-be-identified jade sample; S300, measuring a terahertz time domain signal of the to-be-identified jade sample; S400, calculating characteristic parameters of the to-be-identified jade sample; and S500, comparing the characteristic parameter of the to-be-identified jade sample with each model in the jade classification identification model to obtain an identification result. To be specific, the S100 includes: S101, preparing a natural jade sample and an artificially processed jade sample; S102, measuring terahertz time domain signals of the natural jade sample and the artificially processed jade sample; S103, calculating characteristic parameters of the natural jade sample and the artificially processed jade sample; and S104, on the basis of the characteristic parameters, forming a jade classification identification model based on the characteristic parameters. With the provided jade identification method based on the terahertz time-domain spectroscopy technology, problems of incomprehensive detection and low efficiency in the prior art are solved.
Owner:CHONGQING ACAD OF METROLOGY & QUALITY INST +1

Fruit and vegetable multi-pesticide residue rapid detecting method

The invention discloses a fruit and vegetable multi-pesticide residue rapid detecting method. The fruit and vegetable multi-pesticide residue rapid detecting method comprises following steps: a 15+-0.5g pre-treated sample is weighed, and is delivered into a reagent bottle, 90ml of ethyl acetate is added, an obtained mixture is mixed to be uniform via shaking, sodium bicarbonate and anhydrous sodium sulfate are added, and an obtain mixed material is mixed to be uniform via shaking; the reagent bottle is subjected to water batch at 30+-3 DEG C, and is subjected to homogenizing for 1min in a homogenizer; an upper layer clear liquid in the reagent bottle is filtered, and a filtrate is collected; two parts of the filtrate are delivered into two pear-shaped bottles respectively, and are both subjected to water bath at 35+-3 DEG C; one part of filtrate is subjected to vacuum concentration to dry so as to obtain a residue, and the other part of filtrate is subjected to vacuum concentration toclose to dry. The fruit and vegetable multi-pesticide residue rapid detecting method can be used for detection of most fruit and vegetable based samples; a pre-treatment step is adopted, pesticide objects of different properties are detected using a gas phase liquid phase tandom mass spectrometer, the using amount of chemical reagents in the pre-treatment process is reduced, pre-treatment time isshortened, detection analysis efficiency is increased, and accurate and reliable analysis results are obtained at the same time.
Owner:梅里埃检测技术(青岛)有限公司

Chemiluminescence immunoassay device

The invention discloses a chemiluminescence immunoassay device. The chemiluminescence immunoassay device comprises a shell, wherein a base is arranged at the bottom of the inner side of the shell; a first sliding rail is arranged at the top of the base; a first buffer mechanism and a first roller are arranged on the inner wall of the first sliding rail, and a placement frame and a detection plateare arranged in the first sliding rail in a matching manner; a plurality of second rollers and a second buffer mechanism are arranged at one end of the bottom of the placement frame; a pull rod is arranged at one end of the placement frame; a latch is arranged outside the shell; a lifting compartment and a sliding compartment are arranged at the top of the first sliding rail; a second sliding railand a rack are vertically arranged in the center of the lifting compartment; a first motor is arranged on one side of the second sliding rail; a gear is arranged at the output end of the first motor;a connecting plate and a second motor are arranged at the bottom of the first motor; an output shaft of the second motor is sleeved with a rotary shaft and a plurality of connecting rods; a control box is arranged on one side of the top of the base; a supporting rod and a horizontal rod are arranged at the top of the control box; a detection opening is formed in the bottom of one end of the horizontal rod. The device is simple in structure, convenient and fast to operate, high in detection analysis efficiency, and long in service life.
Owner:郭俊成

Method for rapidly detecting and analyzing quality of sericite

The invention discloses a method for rapidly detecting and analyzing the quality of sericite. The method comprises the following steps: acquiring a physical structure of a sericite sample to be detected by adopting an X-ray diffraction analyzer; acquiring the element content of the sericite sample to be detected by adopting a microcomputer multi-element analyzer, and acquiring spectral information of the sericite sample to be detected by adopting a spectrum analyzer; analyzing the physical structure, element content and spectral information of the sericite sample to be detected by adopting an optimal correction model, so as to obtain a quality analysis result of the sericite sample to be detected, wherein a process of establishing the optimal correction model comprises the following step: S1: acquiring the physical structures of the plurality of sericite samples by the X-ray diffraction analyzer under the conditions that the working voltage is 38kV-42kV, the working current is 28mA-32mA and the wavelength is 10-20 angstroms, so as to obtain information of the plurality of physical structures. The method disclosed by the invention can be used for comprehensively and rapidly detecting and analyzing the quality of the sericite, and is low in cost and high in detection and analysis efficiency.
Owner:ANHUI HENGHAO SCI & TECH

Low-cost and high-sensitivity laser probe element analyzer

The invention discloses a low-cost and high-sensitivity laser probe element analyzer. The laser probe element analyzer comprises a pulsed laser, a beam splitter, a laser energy meter probe, a digital delay pulse generator, a data acquisition card, a laser energy meter, a computer, a first convergent lens and a photomultiplier; the first convergent lens is located on the reflecting optical path of the beam splitter; a plasma signal acquisition optical system is used for acquiring laser plasma signals on one side of a detected object in the horizontal direction and comprises a second convergent lens, an adjustable slit, a third convergent lens, a narrow band filter and a fourth convergent lens which are sequentially arranged, the width of the adjustable slit can be continuously adjusted within the range from 0 mm to 10 mm, and the adjustable slit is used for conducting spatial selection on plasma emission optical signals; a light inlet of the photomultiplier is located at the focus of the fourth convergent lens. The low-cost and high-sensitivity laser probe element analyzer is especially suitable for on-line detection on substance components, has the advantages of being low in cost and high in detection sensitivity and detection speed and has a wide application prospect and market.
Owner:HUAZHONG UNIV OF SCI & TECH

Analyzing and detecting method for content of microelements in dedicated ferric oxide powder standard sample

The invention discloses an analyzing and detecting method for the content of microelements in a dedicated ferric oxide powder standard sample. The method comprises the following steps: taking low-quality ferric oxide powder as the sample, and controlling the content of each microelement in the sample; accurately weighing the sample, adding concentrated hydrochloric acid, heating to dissolve, removing into a volumetric flask, and diluting with water so as to obtain a sample liquid; weighing 5 parts of high-purity iron powder, adding concentrated hydrochloric acid, heating to dissolve, respectively removing into five volumetric flasks, respectively adding a standard solution of each microelement according to different amount into the five volumetric flasks, diluting with water, agitating uniformly, and respectively carrying out spectral line intensity measurement on each microelement so as to obtain a working curve; uniformly mixing the sample liquid and measuring the line strength of each microelement, and obtaining the content of each microelement in the sample through the working curve. The content of each microelement in the ferric oxide powder standard sample, obtained by the method, satisfies the requirement of the microelement analysis and detection in the ferric oxide powder, and the method can be used for performing quality control in ferric oxide powder analysis and detection and used for evaluating and revising detecting instruments, and effectively improves the efficiency of analysis and detection.
Owner:SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE

Kit and method for detecting concentration of cyclosporine drug in dried blood spot sample

The invention discloses a kit and a detection method for detecting cyclosporine drug concentration in a dried blood spot sample, the kit comprises a kit body, a lining, a wide-mouth bottle, a first sample collection tube, a second sample collection tube and a third sample collection tube, the wide-mouth bottle is filled with a sample extraction liquid, the first sample collection tube is filled with a calibrator, and the second sample collection tube is filled with a sample extraction liquid. A quality control product is placed in the second sample collection tube, a blank quality control product is placed in the third sample collection tube, and glass fiber filter paper is arranged in the first sample collection tube, the second sample collection tube and the third sample collection tube and is used as a carrier of a standard product and the quality control product. The detection method based on the kit provided by the invention comprises the following steps: pretreating a sample, loading and detecting the sample by combining a liquid chromatography tandem mass spectrometer, and finally carrying out quantitative analysis on cyclosporine by adopting an internal standard method. According to the invention, the influence of hematocrit effect is avoided, the risk of occupational exposure is reduced, and the detection stability and the practicability of the kit are improved.
Owner:WUXI APPTEC ZK SUZHOU BIOSCIENCE CO LTD

Method for predicting cigarette combustion cone falling tendency

The present invention relates to a method for predicting cigarette combustion cone falling tendency. The method comprises following steps: taking a plurality of cigarettes of a same type, testing tobacco density distribution of each cigarette, and analyzing and calculating to obtain density difference between a highest density point and a lowest density point in a falling section of each cigarette; testing a combustion cone falling rate of each cigarette under same conditions, and obtaining the combustion cone falling rate of each cigarette; drawing a correlation curve between the combustioncone falling rate and the density difference of the cigarette model; and testing the tobacco density distribution of a cigarette to be tested of the same type, obtaining density difference between a highest density point and a lowest density point in a falling section of the cigarette, and calculating the combustion cone falling rate of the cigarette to be tested according to the correlation curve. The method firstly predicts the combustion cone falling rate of the cigarette through the tobacco density distribution, is simple and accurate, has high accuracy, and can greatly improve the efficiency of analysis and detection; and in addition, can mechanically reveal influence of the tobacco structure distribution on the cigarette combustion cone falling behavior.
Owner:CHINA TOBACCO HUNAN INDAL CORP
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