6results about How to "Instant detection" patented technology

The invention provides an ion detection method and device. The method comprises the following steps: obtaining a target chip; performing liquid crystal filling on the target chip to form a liquid crystal optical flow control chip; obtaining a plurality of first to-be-detected solutions with different sodium ion concentrations; acquiring optical images before and after the first to-be-detected liquid is dripped into the liquid crystal optical flow control chip by using a polarizing microscope to obtain a plurality of groups of image data; processing the multiple groups of image data based on a bright field optical image processing flow and a polarized light image data processing flow to obtain a processing result; constructing a target model architecture; training the target model architecture based on the processing result to obtain a target model for detecting the concentration of sodium ions in the solution; collecting a polarized light image presented by the liquid crystal optical flow control chip dripped with the second liquid to be detected; and processing the polarized light image by using the target model so as to calculate and determine the sodium ion concentration in the second to-be-detected liquid. The ion detection method disclosed by the invention can be used for rapidly and effectively detecting sodium ions in the solution.

The invention relates to a microfluidic electrochemical aptamer sensor and a microfluidic electrochemical analysis system. According to the invention, a series of important biomarkers such as adenosine, homocysteine and the like in a blood sample of an organism can be rapidly and accurately quantitatively detected, so that the health condition of the organism can be judged for subsequent treatment. In addition to instant and rapid detection, the device is moderate in size and weight, convenient to carry and suitable for detecting the body health condition in various environments such as hospitals, families and fields, and the obtained physiological parameters are used for giving an early warning to the health condition of people.

The invention discloses a molecular colorimetric ratio detection and analysis method based on metal ions, which utilizes color change generated by reaction of metal ions (strontium ions Sr < 2 + >) and specific chemical substances and gas pressure effect generated by catalysis of decomposition of hydrogen peroxide by platinum nano-enzyme to detect the molecular colorimetric ratio when pathological cells exist. According to the technical scheme, obvious color precipitates appear in the solution through a series of chemical reactions, so that signal output is realized, the detection range is widened, and the technical scheme has higher accuracy and practicability in pathological cell detection.

The invention discloses a probe for targeting staphylococcus aureus and an application of the probe. The amino acid sequence of a nano antibody is as follows: QLQLVESGGLVQAGGSMRLSCAASGRTFSTNTMGWFRQAPGKEREFVAGIRWISGSTQADSVKGRFTISRDNAKNTLFLQMNSLPEDAVYYCAAGPHNIPILRTSAYNYWGQGTQVTVSS, and the amino acid sequence of the nano antibody is as follows: QLQLVEGGGLVQAGGTQVTVSS. According to the invention, a high-performance probe is screened, and a high-sensitivity electrochemical sensor is constructed to realize rapid and accurate screening of staphylococcus aureus in different media; staphylococcus aureus can be qualitatively detected within one minute, and the method has high sensitivity and excellent specificity and accuracy. The method meets the urgent demand of accurately, reliably and quickly detecting the staphylococcus aureus in a complex environment.

This invention discloses a rapid rope adjustment system and method based on gear pitch pulsation, belonging to the field of hoist technology. The system includes a control box, a gear pitch detection device, and a hoist electrical drive. The method involves: after the rope adjustment clutch is engaged, the gear pitch detection device positions the initial position of the moving gear block; the control box calculates the pulsating speed curve based on the gear pitch of the internal gear ring, and uses a closed-loop position control mode to drive the hoist electrical drive to rotate the fixed drum in a pulsating manner according to the gear pitch. When the container reaches the target position, the system control device automatically and precisely stops at the current gear pitch position, then closes the clutch to engage the moving gear block with the internal gear ring, completing the rope adjustment. This invention automates the rope adjustment process, avoiding the manual observation and back-and-forth gear adjustment required in traditional methods, significantly improving the efficiency and accuracy of rope adjustment operations.

The invention discloses a novel coronavirus neutralizing antibody latex test strip traceable to the titer of the novel coronavirus neutralization test, which contains a sample pad, a conjugation pad, a reaction membrane and a blotting paper sequentially joined on a base plate, wherein the conjugation pad is coated with latex microspheres coupled to RBD protein 1 and sheep anti-chicken IgY respectively; a detection limit and a quality control line are provided on the reaction membrane, the detection limit is coated with RBD protein 2, and the quality control line is coated with chicken IgY antibody. Compared with cVNT, it has the characteristics of low cost, fast detection, sensitivity, instant, no need for professional operation, etc., and can be completed in a secondary biosafety laboratory; and compared with conventional latex test strips, it has a semi-quantitative advantage; it can effectively monitor the vaccination reaction in clinical research and serve as an evaluation index of vaccine effect; improve the novel coronavirus detection rate, make up for the missed detection caused by the false negative of nucleic acid detection; detect the neutralizing antibody content in the body of the novel coronavirus infected / recovered person to determine whether there is a risk of reinfection.