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Articles by Yong He
Total Records ( 2 ) for Yong He
  Fei Liu , Babangida Lawal Yusuf , Jianli Zhong , Lei Feng , Yong He and Li Wang
  Visible and near infrared spectroscopy was investigated to identify the varieties of rice vinegars based on back propagation neural network and least squares-support vector machine. Five varieties of rice vinegars were prepared. Partial least squares discriminant analysis was implemented for calibration and extraction of partial least squares factors. The factors were used as inputs of back propagation neural network and least squares-support vector machine. Finally, back propagation neural network and least squares-support vector machine models were achieved. The threshold value of prediction was set as ±0.1. An excellent precision and recognition ratio of 100% was achieved by both methods. Simultaneously, certain effective wavelengths were proposed by x-loading weights and regression coefficients. The performance of effective wavelengths was validated and an acceptable result was achieved. The results indicated that visible and near infrared spectroscopy could be used as a rapid and high precision method for the identification of different varieties of rice vinegars.
  Wenjuan Chu , Hongchang Yao , Hongcui MA , Yong He , Yaoting Fan and Hongwei Hou
  Two new coordination polymers, [ZnL]n (1) and {[Zn(phen)(L)(H2O)] · 3H2O}n (2) (H2L = 1,2-bis[3-(1,2,4-triazolyl)-4-amino-5-carboxylmethylthio]ethane, phen = 1,10-phenanthroline), have been synthesized and characterized by elemental analysis, IR, and X-ray diffraction. Polymer 1 is a 1-D infinite chain (space group Pī) and further forms a 3-D supramolecular structure by S ··· S interactions and hydrogen bonds. Polymer 2 displays a mononuclear structure (space group Pī) and extends into a 3-D supramolecular structure through hydrogen bonds. In addition, spectra and thermal stability of 1 and 2 are also discussed. Strong luminescence characteristics of both polymers are found, suggesting their potential applications as luminescent materials.
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