10results about How to "Detection interference is small" patented technology

The invention provides a method for extracting and determining tea polyphenol in a tobacco extract. The method for extracting and determining the tea polyphenol in the tobacco extract comprises the following steps: preparing a standard solution of a tea polyphenol substance; adding a methanol aqueous solution into the tobacco extract, and fixing the volume to obtain a tea polyphenol diluent; sealing the tea polyphenol purified liquid, and performing ultrasonic extraction to obtain a tea polyphenol extracting solution; preparing a disodium ethylene diamine tetraacetate stabilizing solution, and fixing the volume of the tea polyphenol extracting solution by using the disodium ethylene diamine tetraacetate stabilizing solution to obtain a tea polyphenol purified solution; adding a PSA adsorbent into the tea polyphenol purified liquid, carrying out centrifugal standing to obtain a to-be-detected liquid, and carrying out instrumental analysis on the to-be-detected liquid. Through ultrasonic extraction, the loss of tea polyphenol substances is less, the preparation of a to-be-detected solution is simple, and the analysis time is short; by adding the disodium ethylene diamine tetraacetate and the PSA adsorbent, the interference of other substances on the detection of the tea polyphenol substances is reduced, so that the detection of the tea polyphenol substances in the tobacco extract is more accurate.

The embodiment of the invention provides a coupling tail fiber visual inspection packaging box and a visual inspection packaging method. The coupling tail fiber visual inspection packaging box comprises an upper cover, an inner support and a bottom support. The upper cover is buckled and connected with the bottom support, a cavity is formed in the upper cover, and the inner support is arranged in the cavity; the inner support is provided with at least one protruding platform which is away from the upper cover by a preset distance and is used for placing an insertion core. A groove with a preset height is formed in the inner support and is used for accommodating an optical fiber; at least one plane is arranged at the front position of the protruding platform and serves as a datum plane, and a sticky sheet used for fixing a product to be detected is arranged on the plane. The detection accuracy and efficiency can be improved, accurate observation of product features and rejection of defective products are facilitated, detection interference is reduced, the risk of product damage can be reduced, batch transportation and management are facilitated, products are placed more orderly, and the whole device has good application value and market prospects.

This invention discloses a cell sample viability detection kit and method based on mass spectrometry flow cytometry. The cell sample viability detection kit based on mass spectrometry flow cytometry includes separately packaged solutions C, P, Pd, F, M, and D; solution C includes bovine serum albumin and phosphate buffer; solution P includes phosphate buffer; solution Pd includes palladium dichloride and double-distilled water. The effective component of palladium dichloride, palladium, has the following natural isotope abundances: isotope 102 The relative abundance of Pd was 1.02%. 104 Pd was 11.14%. 105 Pd is 22.33%. 106 Pd is 27.33%. 108 Pd was 26.46%. 110 Pd is 11.72%; Solution F includes paraformaldehyde and phosphate buffer; Solution M includes methanol; Solution D includes... 191 / 193 Ir, paraformaldehyde, and phosphate buffer. This invention's kit features high detection sensitivity, reduced detection interference, improved experimental efficiency, and reliable results.

The present invention relates to the field of biological detection technology, and provides a PCT protein antibody, including anti-human PCT protein monoclonal antibody I and / or anti-human PCT protein monoclonal antibody II; the anti-human PCT protein monoclonal antibody I includes a light chain and a heavy chain; the amino acid sequence of the light chain is shown in SEQ ID NO.1, and the amino acid sequence of the heavy chain is shown in SEQ ID NO.2; the anti-human PCT protein monoclonal antibody II is formed by fusion of nano antibody VHH and Fc of human IgG1, and the sequence after fusion is shown in SEQ ID NO.3. The present invention also provides a latex-enhanced immunoturbidimetric kit for quantitative detection of PCT protein and a preparation method thereof, and the kit includes the above-mentioned PCT protein antibody. The advantages of the present invention are: the antibody has high affinity and good specificity, and the kit based on the antibody has high sensitivity, good specificity, and strong anti-interference ability.

The present application relates to the technical field of data monitoring, and particularly relates to a gantry machining center tool wear state intelligent monitoring system based on multi-source information fusion; suspected abnormal points are obtained according to data difference characteristics and continuous trend characteristics of data points in a monitoring data sequence; neighborhood clustering degrees are obtained according to number characteristics and time interval characteristics of suspected abnormal points in a point cluster where the suspected abnormal points are located; real wear abnormal degrees are obtained according to data point number characteristics of the same value in the history of the suspected abnormal points and the neighborhood clustering degrees; tool wear characteristic values at any moment are obtained according to real wear abnormal degrees of suspected abnormal points in all dimensions; and nearest neighbor values in the LOF algorithm are adjusted according to the tool wear characteristic values at any moment. According to the monitoring data sequence in all dimensions and the adaptive nearest neighbor value, the tool wear state is judged through the LOF algorithm, and the accuracy of the wear state monitoring is improved.

This invention provides a graphene three-electrode coplanar standard electrode and its application. Specifically, three coplanar electrodes are fixedly disposed on an electrode substrate, which are, from left to right, a first electrode, a second electrode, and a third electrode. The first electrode includes a first pin (1), a first guide portion (4), and a first detection layer (7); the second electrode includes a second pin (2) and a second guide portion (5); and the third electrode includes a third pin (3), a third guide portion (6), and a second detection layer (8). An electrode modification hole (9) is formed by drilling a hole in the electrode substrate and is placed directly above the second electrode. A through hole (10) is provided in the middle of the second guide portion (5). A back electrode is disposed on the back side of the electrode substrate, specifically including a back pin (11), a back guide portion (12), and an electrode modification ring (13). The back guide portion (12) is provided with a through hole (10), and the electrode modification hole (9) is provided inside the inner ring of the electrode modification ring (13).

The utility model discloses a fault detection device for a servo driver, which belongs to the technical field of fault detection devices and comprises a detection table, a plurality of supporting seats are fixedly connected to the lower end of the detection table, a clamping mechanism is mounted at the upper end of the detection table, and a push-pull cylinder is mounted at the rear end of the detection table in an embedded manner. A detection terminal is installed at the output end of the push-pull air cylinder, a touch screen is installed at the upper end of the detection terminal, a double-groove connecting wire board is installed at the front end of the detection terminal, and a pair of guide rail boards is installed at the front end of the double-groove connecting wire board; according to the utility model, the flexible clamping mechanism can drive the plurality of terminal butt joint detection heads to horizontally move along the double-groove connection wire board and the pair of guide rail plates respectively, so that adaptive adjustment can be carried out according to terminal interface positions of servo drivers with different sizes and models; therefore, the device can be suitable for servo drivers of different sizes and models, the application range is expanded, and the practicability is improved.

The utility model provides a pipeline detection auxiliary device and a pipeline detection device, and relates to the technical field of defect detection of metal pipelines under thermal insulation layers. The pipeline detection auxiliary device is used for performing auxiliary detection on a pipeline coated with a heat preservation layer and comprises two bent plates, and the two bent plates define a barrel; the rotary connecting piece is respectively connected with the two bent plates, so that the two bent plates are rotationally connected, and the rotating axes of the two bent plates are parallel to the axis of the cylinder body; the fixing piece is at least arranged on one bent plate so as to fix the two bent plates when the bent plates are combined into the cylinder body; and the adaptive part is arranged on the inner wall of the cylinder body, and the adaptive part is adaptive to the lap joint part of the thermal insulation layer, so that the cylinder body is parallel to the pipeline. When the two bent plates are closed, the barrel is defined, the barrel is parallel to the pipeline through the adaptation of the adaptation part and the lap joint part, the scanner moves along the outer surface of the barrel, the scanner moves parallel to the plane of the pipeline to be detected, and the detection effect is improved.

The application discloses a kind of energy storage battery state evaluation method and system based on quartz enhanced photoacoustic spectroscopy, belong to energy storage detection technical field.The method is applicable to the signal evaluation module of energy storage battery state evaluation system;Energy storage battery state evaluation system further includes synthetic ester coolant circulation module, degassing sampling module and quartz enhanced photoacoustic spectroscopy detection module;The energy storage battery to be evaluated is immersed in synthetic ester coolant;The method includes after the gas evolved in degassing sampling module is transported to detection module and output modulated laser signal, the resonant electric signal formed is phase-locked demodulated to obtain photoacoustic amplitude and phase information;Resonant frequency and quality factor are obtained based on phase information, and temperature parameter is obtained according to mapping model;According to temperature parameter and the gas concentration obtained by photoacoustic amplitude and quality factor compensation calculation, state evaluation characteristic quantity is constructed to carry out evaluation, and energy storage battery state evaluation result is obtained, by implementing the present application, the problem of low accuracy of prior art evaluation is solved.

A peanut-shaped fiber optic biosensor for chloramphenicol measurement based on the SPR effect includes a broadband light source (SLED), a sensing structure, and an OSA (Optical Spectrum Analysis System). The sensing structure includes a single-mode fiber, a peanut-shaped fiber, a Bragg fiber grating (FBG), and a surface functional modification region. The surface functional modification region includes an APTES-modified region, a gold film, and a CAP-BSA coupling region. This invention utilizes a peanut-shaped structure to couple more light from the single-mode fiber core into the cladding, enhancing the SPR effect and improving sensitivity. Specific detection of chloramphenicol is achieved through the CAP-BSA coupling region on the fiber surface. Temperature testing is performed using a cascaded Bragg fiber grating to establish a temperature-chloramphenicol concentration sensitivity coefficient matrix, reducing temperature interference with chloramphenicol concentration detection, resolving cross-sensitivity issues, and improving accuracy. This invention features a compact structure, simple fabrication, high accuracy, and high sensitivity.