63results about How to "Sensitivity advantage" patented technology

The invention discloses an anti-influenza A virus nucleoprotein monoclonal antibody with high affinity and high specificity, its preparation and application. The anti-influenza A virus nucleoprotein monoclonal antibody is secreted by a hybridoma cell strain H1N1-2F10, and the preservation number of the cell strain is CCTCC C201119. The invention also provides a kit prepared with monoclonal antibody for rapid detection of influenza A. The kit has the characteristics of simple operation, strong specificity and high sensitivity, etc.

The invention belongs to the field of petroleum exploration and development and particularly relates to a system and a method for detecting by applying a Raman spectrum technology in the gas detection process of oil-gas logging. A Raman spectrum gas detection system comprises a sample pretreatment device, a Raman gas analyzer, a data signal processing module, a data communication module, a signal output display unit and a master control unit, wherein the sample pretreatment device is connected with the Raman gas analyzer and is used for inputting the pretreated gas in the Raman gas analyzer for analyzing components; the Raman gas analyzer is used for inputting the analyzed result to the data signal processing module; the data signal processing module is used for outputting the analysis result to the signal output display unit through the data communication module; and the master control unit is used for controlling the inputting of sample gas.

The invention discloses a strain sensor made of carbon nanotube / epoxy resin composite material. The strain sensor comprises a strain body and conductors arranged at two ends of the strain body, wherein the strain body is made of the carbon nanotube / epoxy resin composite material, and the carbon nanotube / epoxy resin composite material mainly comprises an epoxy resin agent A, carbon nanotubes and a curing agent B. The strain sensor has the advantages that the ratio of the resistance change rate to the strain can reach above 20, the strain can be accurately measured without a digital electric bridge strain gauge extremely high in precision, and the strain sensor is high in sensitivity.

The invention relates to a new method for measuring phospholipase A1 or A2 activity in a sample, using a solid phase coated with a fluorochrome-labelled phospholipase A1 or A2 substrate, wherein the molecular coverage is in the range from 8 to 30 fluorochrome-labelled phospholipase A1 or A2 substrate molecules / nm2, and kit for carrying out said method.

The invention relates to a method for achieving infrared detection by a desorption phenomenon of infrared excitation molecules. The method comprises the following steps that micro-nanometer structure surfaces absorb chemical molecules; infrared signals are added to the micro-nanometer structure surface, and the chemical molecules adsorbed by the micro-nanometer structure surface are desorbed from the micro-nanometer structure surfaces under excitation of the infrared signals; micro-nanometer structures has changes of physical properties due to the molecular desorption, and the changes of the physical properties of the micro-nanometer structures are detected through a device, and therefore detection of the extra infrared signals is achieved. Due to an effect of the extra infrared signals, the chemical molecules adsorbed on the micro-nanometer structure surfaces are desorbed from the micro-nanometer structure surfaces because the chemical molecules absorb the infrared signals to make the temperature rise, the optical property, electrical property, magnetic property and other physical properties of the micro-nanometer structures is caused to change, and therefore the phenomenon is utilized to achieve the detection of the infrared signals. Compared with existing infrared detection technologies, the method for achieving the infrared detection by the desorption phenomenon of the infrared excitation molecules has the advantages that the sensitivity is high and feedback signals are easy to analyze and the like.

The invention discloses a dopamine electrochemical sensor based on an Au / Ti3C2Tx modified glassy carbon working electrode and a preparation method of the dopamine electrochemical sensor, and belongs to the technical field of biosensors. The sensor is composed of a reference electrode AgCl / Ag, a counter electrode Pt sheet, a glassy carbon working electrode modified by Au / Ti3C2Tx, an electrolyte of 0.1 M, and a phosphate buffer solution with a pH value of 7. According to the invention, Au / Ti < 3 > C < 2 > T < x > is used as a working electrode modification material, and Ti < 3 > C < 2 > T < x > has a large specific surface area, excellent conductivity, a hydrophilic surface and good biocompatibility, and has a good adsorption effect on dopamine; au nanoparticles are used for catalyzing the redox reaction on the surface of the electrode, so that the conductivity, the electron transfer capability and the electrochemical active area are improved. The electrode modification material is a nano composite material, and the purpose of improving the sensitive characteristic of the sensor is achieved by utilizing the synergistic effect among the composite materials.

The invention discloses to a small leakage detection ball for a liquid pipeline and relates to the technical fields of tests not included in other classes, acoustic wave measurement and pipeline systems. The small leakage detection ball for the liquid pipeline comprises a battery and power supply switching circuit, an electret microphone and a signal processing circuit, an STM32 (scanning tunneling microscope 32) processor, an inertial navigation module, a timing unit, a magnetic field transmitting device, an SD (secure digital) card memorizer, a USB (universal serial bus) interface and a Jtag (joint test action group) interface of the electret microphone, wherein an output end of the electret microphone is connected with the signal processing circuit which is connected with the STM32 processor, the STM32 processor is connected with the inertial navigation module, the timing unit, the magnetic field transmitting device, the SD card memorizer, the USB interface and the Jtag interface, and the battery and power supply switching circuit is connected with all the circuits to supply power to the same. The small leakage detection ball for the liquid pipeline can detect small and even tiny leakages and is high in sensitivity.

The invention discloses an RT-LAMP method for identifying Japanese encephalitis virus gene types I and III. Through the comparative analysis of Japanese encephalitis virus gene nucleotide sequences of gene types I and III, four specific primers for specific amplification of Japanese encephalitis virus nucleic acids of gene types I and III are designed for six regions on a target gene, the reaction result can be determined according to the color change of liquid in a reaction tube when a reaction is finished after calcein fluorochrome is added to a reaction system, and the reaction result can be determined according to whether a precipitate exists in the reaction tube or not after the reaction is finished or whether a ladder band appears or not during electrophoresis. According to the method, under the constant temperature condition, reverse transcription and nucleic acid amplification are realized within 1h, and the Japanese encephalitis virus gene types I and III can be quickly detected and identified within 1h.

A test system for the determination of the presence of an antibiotic in a fluid using Bromthymol Blue as an indicator.

The invention discloses an anti-influenza A virus nucleoprotein monoclonal antibody with high affinity and high specificity, its preparation and application. The anti-influenza A virus nucleoprotein monoclonal antibody is secreted by a hybridoma cell strain H1N1-2F10, and the preservation number of the cell strain is CCTCC C201119. The invention also provides a kit prepared with monoclonal antibody for rapid detection of influenza A. The kit has the characteristics of simple operation, strong specificity and high sensitivity, etc.

The invention discloses a strain sensor made of carbon nanotube / epoxy resin composite material. The strain sensor comprises a strain body and conductors arranged at two ends of the strain body, wherein the strain body is made of the carbon nanotube / epoxy resin composite material, and the carbon nanotube / epoxy resin composite material mainly comprises an epoxy resin agent A, carbon nanotubes and a curing agent B. The strain sensor has the advantages that the ratio of the resistance change rate to the strain can reach above 20, the strain can be accurately measured without a digital electric bridge strain gauge extremely high in precision, and the strain sensor is high in sensitivity.

The invention discloses a sentinel lymph node rapid assay kit, which is prepared from four antibodies, namely a rat-human moc-31 antibody, a rat-human CD4-4v6-FITC antibody, a rat-human her-2-percp antibody and a rat-human Mucin1-PE antibody. The preparation and detection method comprises the following steps of: preparing sentinel lymph node single cell suspension, prewashing miltenyi; labeling the moc-31 antibody; performing cell separation; performing cell elution and performing flow cytometry. The sentinel lymph node rapid assay kit has the advantages that: the kit is convenient to operate, has short time and can finish the whole process within 60 to 70 minutes. Meanwhile, compared with intraoperational frozen HE dyeing and CK-IHC in the prior art, the sentinel lymph node rapid assay kit has obvious advantages in sensibility of diagnosing the sentinel lymph node transfer and false negative rate.