12 results about "Chromatography column" patented technology

The invention discloses a serum specificity metabolite spectrum for a patient with a lung cancer and a building method thereof, and particularly discloses a method for carrying out liquid-phase/gas-phase chromatography mass spectrometry metabonomics analysis based on the patient suffering from the lung cancer. The method comprises the following steps: collecting fasting blood samples of a healthy and normal detected person and the patient suffering from the lung cancer 7 days before and after an operation, separating by a chromatogram column after processing; extracting and aligning original data of an instrument after adopting mass spectrometry analysis; building a mathematical model to analyze the metabolites spectrum by adopting multivariable data statistical software; comparing with the difference between an average person with the metabolites spectrum of the patient with the lung cancer, so as to determine the specificity metabolite spectrum. By adopting the method disclosed by the invention, the mutation status of the metabolite of the patient with the lung cancer can be generally and comprehensively reflected, and the serum specificity metabolite spectrum can be applied to early diagnosis of the lung cancer or a beneficial technical support is supplied for prognosis.

Various embodiments of the present invention are directed to systems and methods for packing chromatography columns. In one described embodiment of the present invention, a compressible resin is combined with a relatively high-viscosity packing solution to form a resin slurry for packing within a chromatography-column tube. In an alternative embodiment of the present invention, a relatively high-viscosity column-compression solution is used to compress a chromatography column initially packed with a dilute aqueous solution.

The invention relates to a six-way valve structure for online monitoring and detection of oil gas chromatogram and an application method thereof. The six-way valve structure comprises a valve body, wherein a pipe orifice A, a pipe orifice B, a pipe orifice C, a pipe orifice D, a pipe orifice E and a pipe orifice F are formed in the valve body; the pipe orifice A and the pipe orifice B are communicated through a pipeline built in the valve body; the pipe orifice C and the pipe orifice D are communicated through a pipeline built in the valve body; the pipe orifice E and the pipe orifice F are communicated through a pipeline built in the valve body; the output ends of the pipe orifice D and the pipe orifice A are communicated through a switch pipeline built in the valve body; a miniature electromagnetic valve A is arranged on the switch pipeline; a miniature electromagnetic valve B is arranged at an the input end of the pipe orifice A; the pipe orifice C is connected with the pipe orificeF through a quantifying pipe built outside; the pipe orifice A is a carrier gas inlet; the pipe orifice E is a sample inlet; the pipe orifice B is connected with a chromatographic column. The six-wayvalve structure provided by the invention has the advantages of simple structure, reasonable design and high operation quality, improves the stability of an oil chromatogram online monitoring system,and reduces the maintenance frequency; stable operation of the equipment can better reflect internal conditions of a transformer.

The invention discloses a liquid chromatographic column pipe body grinding device which comprises a machine body and a bearing frame. Supporting legs are arranged on the peripheral wall bodies of the bottom of the machine body correspondingly, an electric control box is arranged on the wall body of the front end of one side of the top of the machine body, and a machine box is arranged on the wall body located behind the electric control box and at the top of the machine body; and a transmission box is arranged on the wall body of the rear end of the machine box and at the top of the machine body, a grinding wheel is arranged on a machine shaft at the rear end of the transmission box, a protective cover is further arranged on the wall body of the rear end of the transmission box, a waste residue pipe is arranged in the wall body of the back of the protective cover, and a sliding table is arranged on the wall body of the other side of the top of the machine body. According to the liquid chromatographic column pipe body grinding device, through the arrangement of a containing mechanism, a ground pipe body can be conveniently contained; and meanwhile, through the arrangement of a first fixing frame, a second fixing frame and a second adjusting shaft, the height of arc-shaped covers can be conveniently adjusted. Through the arrangement of a first adjusting shaft, a first sliding block and a second sliding block, the distance between the arc-shaped covers can be adjusted conveniently.