## Abstract The chemical oxygen demand (COD) parameter of a wastewater treatment plant is predicted based on wavelet decomposition, entropy, and neural networks (NN) for rapid COD analysis. This paper also describes the usage of wavelet and NNs for parameter prediction. Data from a wastewater treat
Quantitative prediction of substituted products based on quantum-chemical parameters and neural network method
✍ Scribed by Wang Xue-Ye; Song Huang
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 327 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0256-7660
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✦ Synopsis
Abstract
The criterion of orientating group of electrophilic aromatic nitration was discussed by means of pattern recognition method with quantum‐chemical parameters as features, and the product ratios of the reactions were quantitatively calculated using artificial neural network (ANN) method with the same parameters as inputs, based on the ab initio calculation of quantum chemistry, The quantum‐chemical parameters involved orbital energy, orbital electron population, atomic total electron density and atomic net charge. The predicted values are in agreement with experimental results and the predicted error of the ANN with quantum‐chemical parameters for the reaction is the smallest among the all methods.
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