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- secondary derivative spectrum 二阶导数谱
- ：Illicium vatum Hook.f.and Illicium lanceolatum A.C.Smith;FTIR;Secondary derivative spectra;2D-IR correlation spectra 知网空间,八角茴香与其伪品莽草的红外光谱三级鉴定研究,八角茴香和莽草,红外光谱,二阶导数谱,二维相关红外光谱
- Secondary derivative spectra 二阶导数谱
- In the second-step identification, the resolution of spectrum in the secondary derivative IR spectra was better than that of 1D-IR.Furthermore, the rule of spectra in 1D-IR was further demonstrated. 在二级鉴定中，二阶导数谱显示了比一维红外谱图更高的分辨率，同时进一步确认一维红外谱图的成谱规律；
- The secondary derivative differential pulse polarography was developed for the quantitative determination of chrysophanol in rheum. 建立了中草药大黄中大黄酚的二阶导数差示脉冲极谱定量分析方法。
- D by using the first derivative spectrum and REP, and the properest models were index(R2=0.9487)and parabola (R2=0.9392) respectively. D 是可行的;最适模型分别为指数(R2=0.;9487)和抛物线(R2=0
- The first derivative spectrum is more correlatively with the biophysical parameter including chlorophyll density and LAI. 综合分析，孕穗期是利用高光谱遥感进行作物长势和养分诊断研究的最佳时期。
- Aim The secondary derivative differential pulse polarography was developed for the quantitative determination of the aesculin in medicinal herbs (?Cortex Fraxini?). 目的 :建立中草药秦皮中秦皮甲素的二阶导数差示脉冲极谱定量分析方法。
- The second-class derivative spectrum method was u sed to determine the amygdalin contents of Prunus persica(L .) Batsch. from three different areas (Fujian, Anhui, Xinjiang). 采用二阶导数光谱法直接测定三种不同产地(福建、安徽、新疆)桃仁中苦杏仁甙的含量。
- Sceond-order derivative spectrum 二阶导数谱
- derivative -ratio derivative spectrum 导数-比导数光谱
- Keywords Natamycin;yoghourt;Derivative Spectrum; 纳他霉素;酸奶;导数光谱法;
- Derivative-Ratio Derivative Spectrum 导数-比导数光谱
- Results Obvious differences exist in the ultraviolet spectra and derivative spectra of the Hongqu produced with different species. 结果：不同种红曲霉制备的红曲的紫外光谱及其导数光谱存在明显差异。
- Determination of Colchicine by Secondary Derivative Polarography 秋水仙碱的二阶导数极谱测定
- A new method to resolve nearly overlapping spectra is proposed.By means of derivative spectrum the discrepancy of constituents can be enlarged,thus the analytical sharpness of separation was improved. 利用导数光谱能增大组分的光谱差异,从而提高二维联用数据解析的分辨率,通过将二维数据对波长求导,以解析光谱相近的同系物体系。
- Several kinds of powdered milk were identified fast and nondestructively by Fourier transform infrared spectroscopy (FTIR) combined with second derivative spectra. 采用红外光谱法(FTIR)并结合二阶导数谱对几种奶粉产品进行了无损快速鉴别。
- In this method, the propranolol were extracted by GDX403 resin and eluted by methanol.The content of propranolol were obtained by determing UV 2nd derivative spectra of elutent. 肝中心得安用GDX403树脂吸附然后用甲醇洗脱,用二阶紫外导数光谱测定心得安的含量。
- The survey covered a broad spectrum of topic. 这本简史涉及的话题范围很广。
- Her age is of secondary interest. 她的年龄不太重要。
