University of Shanghai for Science and Technology

Liping Wang

Yan Peng

Yiming Zhu

Songlin Zhuang

Yang Liu

Zhijia Liu

Lin Guo

Chenjun Shi

Jiayu Zhao

Keying Liu

Qingrou Yang

Xinyu Tang

Tianyi Kou

Zhaozhao Sun

Haicheng Xiao

A method for quantitative detection of blood lipid in blood based on terahertz spectroscopy, including: matching the terahertz spectral absorption coefficient curves of blood samples obtained in step 3 with parameters of component concentration and component type of the blood lipid detected by hospital instruments, and establishing a terahertz blood lipid parameter database by combining the time-domain signal data of samples of the triglyceride and cholesterol; determining parameters of a support vector regression (SVR) model; performing a training with the training set as input to the SVR model to obtain a support vector and a corresponding weight; and testing the test set of an unknown blood sample using the trained support vector and the corresponding weight.

Method for quantitative detection of blood lipid content in blood based on terahertz spectroscopy

A method for detecting notoginseng using terahertz technology. The notoginseng samples are pulverized in pulverizer. The pulverized samples are mixed with polyethylene powder in the ratio of 1:4 to 1:6. The powder mixture is pressed in a tablet press to obtain notoginseng tablet. Terahertz spectrograph is started. A peak is saved, and a background signal is measured. The time-domain graph of the background without sample is acquired. The time-domain graphs of the notoginseng tablets are acquired. The time-domain graphs are transformed into frequency-domain graphs by Fourier transform. The frequency-domain graphs are converted to obtain absorption spectrum of the notoginseng tablets. The absorption peak position of test tablet is compared with that of standard tablet to determine its authenticity. The concentration of key active substances of the notoginseng test sample is quantitatively analyzed by integrating the area under absorption peak curve of the notoginseng test sample.

Method for detecting notoginseng using terahertz technology

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Shanghai, China

Liping Wang