Construction of five-level practical teaching system for bioengineering under Emerging Engineering Education background / 生物工程学报

Strengthening practical teaching, together with improving innovation ability is one of the key tasks of Emerging Engineering Education. This paper is based on the revision of the training program of bioengineering in School of Chemical Engineering and Technology, Tianjin University, improved the practical teaching system and curriculum content, built a five-level teaching system for basic experiment, comprehensive experiment, course design, scientific research and practical training. In order to cultivate outstanding innovative talents with practical ability and innovative spirit, innovative teaching reform mode is proposed. Furthermore the new thought and new schemes for Emerging Engineering Education are put forward.

Evaluation of matrix effect of processed materials in serum total glycerol measurements / 中华检验医学杂志

Objective To evaluate the matrix effect of processed materials in serum total glycerol measurement and to assess the accuracy of routine test systems.Methods With an isotope dilution liquid chromatography tandem mass spectrometry method as the comparative method，matrix effects of 28 processed materials on 8 routine test systems were evaluated ccording to the NCCLS EP 14 protocol.The processed materials and 20 flesh patient specimens were analyzed with both the comparative method and each of the evaluated methods and results obtained with the two methods were plotted.Two-tailed 95% prediction intervals for the mean of the flesh patient specimen were computed and results on the processed aterials were compared with these intervals for evaluation of matrix effect.Results with the two methods on fresh samples were also compared for assessment of the accuracy of the routine test systems.Results Some of the processed samples showed matrix effects on some of the routine test systems.The observed matrix effects were system-specific and aused either positive or negative biases.Calibration biases were also observed on some test systems.Conclusion Matrix effect and calibration bias have been observed in serum total glycerol measurements.Continued efforts are needed for improving the accuracy of serum total glycerol measurements.