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China Focus: Chinese study unlocks clues to fight African swine fever
African swine fever three-dimensional structure protein subunits
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2019/10/22
Chinese scientists have unraveled the three-dimensional structure of the African swine fever virus, laying a solid foundation for developing effective and safe vaccines against the disease.
霉变板栗的近红外光谱和神经网络方法判别(Discrimination of Moldy Chinese Chestnut Based on Artificial Neural Network and Near Infrared Spectra)
板栗 近红外光谱 BP神经网络 预处理
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2009/11/3
利用近红外光谱检测了带壳板栗的品质。在波数为12000~4000cm-1范围内采用近红外漫反射法采集了合格板栗和霉变板栗的光谱,用6种光谱预处理方法分析数据,比较了板栗近红外光谱在不同预处理方法下所建模型的识别率。试验结果表明经矢量归一化预处理所建模型识别效果最好,对预测集中的合格板栗、表面霉变板栗、内部霉变板栗的预测正确率分别为94.74%、94.44%、92.31%。