40results about How to "Intuitive detection method" patented technology

The invention relates to a method for differentiating propolis and poplar gum. The method includes following steps: (1), ultrasonically dissolving propolis and poplar gum respectively, centrifugally filtering, performing rotary evaporation on filtrate to form paste to obtain propolis extract and poplar gum extract; (2), using methanol to respectively dilute the propolis extract and the poplar gum extract to obtain propolis analysis liquid and poplar gum analysis liquid; (3), respectively injecting samples of the propolis analysis liquid and the poplar gum analysis liquid into a high performance liquid chromatography-free radical detection system combined online detection system; (4), comparing chromatogram of propolis with chromatogram of the poplar gum to differentiate propolis and the poplar gum. By the method, an anti-oxidation active ingredient can be used as a comparison product, the defect that fingerprint spectra are low in repeatability is overcome, and the defect that the comparison product is unstable due to degrading and activity loss of the active ingredient can be avoided. The method is efficiency, visual, simple and convenient to operate and high in sensitivity and repeatability.

The invention discloses a vibration acoustic wave based charged flaw detection device and method for a porcelain post insulator. The device comprises a detecting device, an insulating bar and a background data management system, wherein the detecting device comprises a casing, an emitting probe and a receiving probe, wherein the emitting probe and the receiving probe are arranged at the upper end of the casing, a control circuit board is arranged in the casing, and a thread fixing hole is formed in the lower end of the casing; a screw rod is arranged at the upper end of the insulating bar and is spirally connected with the thread fixing hole; the background data management system is connected with the detecting device through the wireless network. A vibration load is applied to the porcelain post insulator, the vibration frequency of the porcelain post insulator is detected, accordingly, the complete detection function of the porcelain post insulator is realized, the problem of failure in charged detection is solved, the detection result is directly and effectively reflected in a vibration spectrogram form, and a large amount of labor and manpower is saved.

The invention discloses a method for determining sodium copper chlorophyllin in olive oil. A sample is extracted through an extracting solution and then is subjected to low-temperature high-speed centrifugation, and supernatant is separated through a liquid chromatography, is detected through a diode array detector, is subjected to nature determination through retention time and is quantified by an external standard method. The method comprises the following steps: step1. preparing a standard working solution, a standard using solution for standard addition and olive oil mixed with sodium copper chlorophyllin in a simulating manner; step 2. respectively carrying out liquid chromatogram determination on the three kinds of solutions of the step 1 by adopting a high performance liquid chromatography; drawing a regression curve of the standard working solution by using the concentration x of sodium copper chlorophyllin in the standard working solution as an x-coordinate and the correspondingly-measured peak area y as a y-coordinate, and calculating a slope factor a and an intercept b of the regression curve according to a linear equation (y=ax+b) obtained based on the curve; step 3. according to the standard curve equation, calculating the concentration of sodium copper chlorophyllin in olive oil. According to the method, a universal liquid chromatographic column and an ultraviolet detector are adopted to carry out high performance liquid chromatogram determination for the sodium copper chlorophyllin, and the interference of determination of other substances is eliminated. According to the method, the content of sodium copper chlorophyllin in olive oil can be accurately measured, the quantifying is accurate and reliable and the reproducibility is good.

The invention relates to a serologic detecting kit for potyvirus on a sweet potato and a detecting method thereof. The kit is divided into an upper layer and a lower layer, wherein reagent bottles are arranged on the upper layer; a push-pull drawer is arranged on the lower layer; a nitrocellulose film is placed into the drawer; and a specific antibody for the potyvirus, a mixed antibody for the potyvirus and a goat anti-rabbit IgG, NBT, BCIP and Tris-HCl solution marked with alkaline phospholipase are respectively filled in different reagent bottles. When a sample is detected, the reagent bottle containing the mixed reagent is used for detecting if the sample contains the potyvirus; other specific antibodies are used for detecting when a certain specific virus needs to be confirmed; the detection is convenient; and the cost is saved; and the detecting method is simple, direct, convenient and practical. The serologic detecting kit and the detecting method provided by the invention can be applied to the detection for the detoxified sweet potato stem seedling and all-level potatoes, and the quality and the yield-increasing effect of the detoxified sweet potatoes are ensured by quickly and efficiently detecting the potyviruses.

The invention provides non-constant-temperature type heated electronic smoking set consistency detecting method and system. The method comprises the following steps: screening a standard sample from mass-produced electronic smoking sets; acquiring the temperature change curve of the standard sample and the temperature change curve of each electronic smoking set to be detected; determining the upper and lower floating temperature threshold according to the temperature change curve of the standard sample, and acquiring the upper and lower temperature threshold curve of the standard sample; judging whether the temperature value on the temperature change curve of the electronic smoking set to be detected exceeds the temperature range of the upper and lower temperature threshold curves of the standard sample or not; and carrying out sensory evaluation and test on the electronic smoking set to be detected which exceeds the temperature range of the upper and lower temperature threshold curvesof the standard sample. The method and the system are effective for the detection of mass-produced products, are wide in application range, and are not limited by the heating mode and structure; thetemperature detection is sensitive, and the realization device is simple.

The invention discloses a one-step droplet digital PCR method for quantitatively detecting the GII type norovirus in fruits and vegetables. According to the method, RT-ddPCR is utilized, a primer and a probe for RT-qPCR detection of the GII type norovirus are combined for use, reaction is carried out, and then the high-sensitivity rapid detection for the GII type norovirus is realized. The method is high in sensitivity and can achieve about 2copies/[mu] L, but the sensitivity of the conventional RT-qPCR is usually 10 copies/[mu] L; the amplification efficiency is high, the amplification efficiency is 95.4%, R2 is equal to 0.9973. Under low copy number, compared with RT-qPCR, the method provided by the invention can more effectively avoid the influences of inhibitors in fruits and vegetables, and the false negative generation is reduced. Therefore, the detection method provided by the invention is sensitive, accurate and visual, a novel detection method is provided for the government departments including the agriculture department and the inspection and quarantine bureau, and related detection mechanisms and enterprises, and guiding significance is also achieved.

The invention relates to a detection system and a detection method of a base band digital video frame rate. The system comprises a video frame rate detection card, a video quality assessment analyzerand a tested video camera, wherein the video frame rate detection card comprises a dial plate, a pointer which is driven by a motor to rotate at a constant seed is arranged on the dial plate, long scale lines are arranged on the dial plate every five degrees, and short scale lines are arranged on the dial plate every one degree; the video frame rate detection card also comprises a detection stripand an image positioning point used for automatically finding dial plate and pointer positions when image recognition is performing, wherein the detection strip is composed of multiple pieces of colors with different gray levels; the video frame rate detection card is a real image card, generates a continuous movement image, provides a continuous video source for the tested video camera, and transmits data to the video quality assessment analyzer through imaging of the video camera, sampling and coding. The detection method provided by the invention adopts the detection system of the base banddigital video frame rate for detecting.

The invention discloses a method for detecting the content of manganese in sewage by using fluorescent bacteria, relating to the field of methods for detecting the content of manganese in the sewage and aiming to solve the problems that the traditional method for detecting the content of manganese in the sewage is expensive in equipment, complex in processing, high in cost, large in workload and high in error. The method for detecting the content of manganese in the sewage by using the fluorescent bacteria comprises the steps of: 1, preparing an LB (Luria-Bertani) liquid culture medium; 2, culturing fluorescent bacteria; 3, diluting a bacterial solution; 4, preparing bacterial solutions with different manganese contents and culturing; 5, carrying out fluorescent detection; 6, establishing a rectangular coordinate system and calculating a regression equation; 7, detecting the fluorescent intensity of the bacteria solution containing the sewage to be detected; and 8, working out the manganese content of the sewage to be detected. The method disclosed by the invention is applied to the field of sewage detection.

The invention discloses a detection tool, which is used for detecting an extension tolerance zone of a threaded hole in a part, and comprises a detection tool body and a detection bolt, the detectiontool body comprises a base used for supporting a part; a base is used for supporting the part; wherein one end of the base extends in the first direction to form a first positioning part used for abutting against a part. The first positioning part is parallel to the extending direction of the base to form a support, the support is provided with a through hole, and the through hole is coaxial witha threaded hole in the part. The upper surface of the support is a stopping surface of the testing fixture body. The detection bolt comprises a limiting part and a detection part; the step surfaces ofthe limiting part and the detection part are limiting surfaces of the detection bolt; and the limiting surface is used for being matched with the stopping surface to detect the part. On one hand, thedetection efficiency of parts is improved; on the other hand, the detection precision is improved.

The invention discloses a circuit and film for deformation detection, which are arranged on the surface to be tested. The circuit includes a plurality of pixel units, including (n/2) rows*m columns, and each pixel unit has a first input terminal, The second input terminal and the output terminal, the first input terminal is used to receive the first voltage signal, the second input terminal is used to receive the pulse signal, the output terminal is used to output the current signal, when the current signal changes, then It is determined that the area of ​​the corresponding pixel unit changes, and the surface to be measured is deformed. For the circuit and film of the present invention, when the output current signal changes, it means that the area of ​​the corresponding pixel unit has changed, and since the circuit and the film are attached to the surface to be tested, it means that the surface to be tested has been deformed. Therefore, it is convenient for users to detect and replace abnormal products in time, and accidents are avoided. Moreover, the detection method of the present invention is intuitive and easy to operate.

The invention discloses a method for rapidly detecting retrovirus by a cell ultrathin section electron microscope. The method comprises the following steps: 1) collecting and fixing of a sample; 2) uranium acetate block dyeing; 3) dehydrating, permeating and polymerizing; 4) slicing, dyeing and detecting through a transmission electron microscope. Compared with a traditional method, the method hasthe advantages that the sample preparation efficiency is greatly improved, the traditional 5-7-day sample preparation period is shortened to 1 day, and an ultrathin slicing technology for rapidly detecting viruses becomes possible. Compared with a traditional virus detection method, the optimized ultrathin section electron microscope technology for detecting viruses has the advantage that the specificity, accuracy and detection efficiency of virus detection are greatly improved.

The invention relates to compound snow lotus capsules as well as a preparation method and device thereof. The preparation method of the compound snow lotus capsules comprises the following steps: first raw materials including vinegar processed rhizoma corydalis, rhizoma et radix notopterygii and the like of the compound snow lotus capsules are decocted with water and filtered, and clear paste is obtained after concentration; a second raw material, namely, herba saussureae involucratae, of the compound snow lotus capsules is extracted with ethanol and filtered, and an extract solution is obtained; the extract solution and the clear paste are mixed, the mixture is left to stand and concentrated, then drying, smashing, sieving and encapsulating are performed, and the compound snow lotus capsules are obtained. Toxicity of aconitine in radix aconiti preparata and radix aconiti kusnezoffii preparata is detected with quail. According to the preparation method of the compound snow lotus capsules, the toxicity of the aconitine in the radix aconiti preparata and the radix aconiti kusnezoffii preparata is detected with a biological test material, a detection result is accurate and reliable, and the safety of the compound snow lotus capsules is improved.

The invention relates to a method for realizing an intelligent vision system for synchronous detection of an elevator brake spring, which comprises the following steps: when an elevator inspector periodically detects the brake force of an elevator, an installation detection camera is installed beside an elevator brake device in an elevator machine room, and a camera video signal is transmitted toa computer through a cable; the computer is connected with an elevator brake device control panel through an I/O interface, and an elevator brake signal is obtained; the computer receives informationof an state image of the elevator brake spring, which is automatically and continuously captured by the camera; the action states of the two springs of the left and right brakes of the elevator are detected through an image processing and mode recognizing algorithm in the computer; and the synchronous situation of the elevator brake spring is automatically detected and calculated. The method in the invention realizes accurate detection on reduction of the brake force of the elevator due to incapability of synchronization of the left and right springs of the elevator brake, can find the fatal elevator safety problem of insufficient brake force of the brake in advance and finds causes of problems so as to solve the potential safety hazard of the elevator quickly and accurately.

The invention relates to a plant spore number detecting method, especially determination of alga spore number, characterized in using micro imaging to record spore states in unit water body or substrate segment, inputting and storing the spore states into a computer, outputting paper records by printer and then according to the paper records, counting the spores and obtaining the spore number.