32results about How to "The determination method is accurate and reliable" patented technology

The present invention provides preparation process of toad skin total alkaloid. The toad skin total alkaloid contains indole total alkaloid 50-95 wt%, cinobufagin and lipo bufogenin 0.02-0.08 wt%, and toad thetine 20-50 wt%. The present invention provides also the method of measuring toad thetine content, and the injection, powder for injection, dripping pill, capsule, oral liquid, etc with the oad skin total alkaloid as effective component and their preparation process.

The invention discloses a special vehicle passenger information processing capacity measurement system and method. The system comprises a measurement system parameter setting subsystem, a passenger information processing capacity measurement subsystem and a comprehensive passenger information processing capacity level judgment system, wherein the passenger information processing capacity measurement subsystem comprises a visual discrimination reaction measurement module, a visual selection reaction measurement module, a digital information memory measurement module, a position order memory measurement module and an understanding processing memory measurement module; the comprehensive passenger information processing capacity level judgment system comprises a passenger information processing data calculation module and a passenger information processing capacity level judgment module. With the adoption of the special vehicle passenger information processing capacity measurement system and method, visual discrimination reaction time, visual selection reaction time, digital information memory breadth, position order memory breadth and understanding processing memory error rate can be processed quickly and accurately, measured person information processing capacity index comprehensive value is obtained, and the measured person information processing capacity level is obtained.

The invention discloses a method for simultaneously measuring the content of multiple active ingredients in eucommia ulmoides. The method adopts high performance liquid chromatography for analysis; the chromatographic condition is taking octadecylsilane bonded silica as a filler; the mobile-phase gradient elution process is: the mobile phase A is methanol, and the mobile phase B is an aqueous solution of phosphoric acid with mass concentration of 0.1%; the content of the mobile phase B is increased from 30% to 70% by mass according to the first-order linear gradient in 0.01-30.00min, reduced to 30% in 30.00-30.01min and kept at 30% in 30.01-40.00min; the flow rate is 0.8ml / min; the column temperature is 30 DEG C; the sample injection volume is 5mul; the detection wavelength detection process is: the 254nm wavelength is selected in 0.01-7.00min, the 277nm wavelength is selected in 7.00-12.50min, and the 254nm wavelength is selected in 12.50-40.00min; and multiple active ingredients include geniposidic acid, chlorogenic acid, pinoresinol diglucoside and rutin. According to the invention, the method is verified by linear relation survey, stability test, precision test, reproducibility test and sample injection recycling test, and the analysis method is proved to be accurate and reliable.

The present invention relates to a method for simultaneously measuring 31 components in a compound salvia miltiorrhiza extract or related medicinal materials. The method adopts a direct series-reversed-phase-hydrophilic interaction chromatography-mass spectrometry method, and the method comprises the following steps: 1 Preparation of sample solution; Step 2 Preparation of standard series solution; Step 3 Preparation of internal standard solution; Step 4 Preparation of test solution; Step 5 Take the solution obtained in Step 4 and inject it into direct series reversed-phase-hydrophilic interaction liquid chromatography The mass spectrometry system obtains the extracted ion chromatograms of 31 analytes, and calculates the content of 31 components in the compound salvia miltiorrhiza extract or related medicinal materials according to the extracted ion chromatograms.