Sceond-order derivative spectrum;
二阶导数谱；
Conclusion Either ultraviolet spectrum or derivative spectrum can be used as a tool of quality evaluation of Hongqu.
结论：紫外光谱法可作为红曲药材的质量评价手段之一。
This proves that it is feasible to use the technology of derivative spectrum and the method of vegetation index to monitor the pigment concentration and growth of rice.
这表明，用微分光谱技术与植被指数方法来监测水稻的色素含量和长势应该是可行的。
The derivative spectrum of saccharin sodium, benzoic acid and sorbic acid were seriously overlapping, so they can not be determined individually by spectrophotometry without prior separation.
糖精钠、苯甲酸和山梨酸的导数光谱彼此严重重叠，未经分离无法作单一成分分析。
The second derivative of rats′serum fluorescence spectrum was analyzed to obtained spectral properties during the process of liver fibrosis.
分析了白鼠肝纤维化病变过程中血清荧光光谱的二阶导数光谱。
The effect of different zero crossing wavelengths on determination of mixed colorants in food under the same divisor factor in derivative ratio spectrum were discussed.
探讨比值导数波谱法中相同除数因子下的不同零交点波长对食品混合色素检测的影响。
It is shown that the wavelength modulated reflective spectrum is essentially the first derivative of dielectric function with respect to the energy.
分析表明波长调制反射谱的实质，是介电函数对能量的一级微商。
Chitosan is compatibility from the natural N-deacetylated derivative of chitin, and has perfect biocompatibility and antibacterial function with broad-spectrum.
壳聚糖是天然甲壳素经乙酰基反应后的可溶物，具有良好的生物相容性和防腐抑菌性。
The original spectrum is processed by using first derivative, and applying Partial Least-Squares method to set up linear mathematical model.
采用一阶导数方法对光谱进行预处理；利用偏最小二乘法建立模型。
The original spectrum is processed by using first derivative, and applying Partial Least-Squares method to set up linear mathematical model.
采用一阶导数方法对光谱进行预处理；利用偏最小二乘法建立模型。
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