[Peak Height] 進入 波峰高度畫面, 如下圖所示 54 其中 P1, P2 分為兩支使用者指定之特定波峰 Base1, Base2則為決定 P1, P2 高度之基準點 波峰高度計算如下 P1 or P2 高度 Base1 Base2 P 1, P2, base1, base2 位置均由使用者決定 Step3 :由 [Calculation Method] 進入波峰高度設定模式, 如下圖...
Experiment and calculation results show: accuracy can be improved by taking strong peak height at low concentration range, taking peak area or weak peak height at high concentration range as quantitative feature, and using third order polynomial to fit the output curve of FTIR. The lo...
In contrast to manual calculations, the FTIR spectra of standards were opened in the TQ analyst program, which is a superior way to save time and labour when measuring peak height, peak width, and peak area. The leave-one-out cross-validation procedure was used to verify the calibration ...
ATR-FTIR分析冻结-解冻后的牛肉蛋白二级结构变化 摘要 In order to further clarify the influence mechanism of different freezing temperature on meat quality in meat industry. The effects of freezing at -18,-23 and -38 ℃ on the stability of protein secondary structures of beef were studied.Th...
Thus, the peak at 930/cm, attributed to the P-OH bending mode, is used to track changes in the amount of phosphate excreted in the urine31. The calculated area of this peak is compared between the two groups in Fig. 6b. Although the diversity of peak areas is similar in both groups...
We find that for d2 < 20 nm the peak positions are nearly the same as for the calculation including the factor (1 + r)² (solid lines), revealing that the peak shift is essentially a near-field effect. For d2 > 20 nm, the peak shift stays rather constant and ...
altered peak widths, and non-linear absorbance. DRIFTS can be performed on undiluted “neat” soil samples, or using KBr dilution of soil samples (2–10% sample). The suitability of KBr dilution is assessed empirically to determine if spectral quality is improved, or as a necessity when only...
e detailed conclusions can be drawn as follows: (1) For these samples (GZ, HB, and HN), the contraction vibration intensity 2860 cm−1) is very of the weak at −CH3 band (2920 cm−1 di erent temperatures and and the peak area of this band cannot be obtained so that the P1 ...
but also the relative peak intensity ratio of the water bands is altered. Unlike the absolute peak intensity, this relative intensity ratio is independent of the total immersed area and is not affected by experimental variations. Therefore, it is an excellent measure for the average wetting state...
protein- and lipid-richstratum corneum. In the designated SC area of our investigation—comprising also the epidermal layer—the amide I peak maximum at ~1655 cm−1(Fig.5b) derives from α-helices present in keratin33. In the dermis, the peak maximum located at 1660 cm−1corresponds to...