Sentence examples for stretch region from inspiring English sources
Spectra A and B in Figure 4 show the second derivatives of FTIR absorbance spectra of LDH and the LDH·NADH complex, respectively, in the C=C and C=O stretch region.
Presently these instruments are able to obtain quantitative, spatially resolved information on lipids from the CH stretch region of the Raman spectrum, and some instrument designs facilitate acquisition of high quality fingerprint spectra, containing information on a host of molecular species including structural proteins, nucleotides, and metabolites.
After comparing the shapes of the bands for the absorbance spectra of the saline-soaked samples, it was noticed that 3D-Direct, Rok, ICE, 4 Seasons, Tetric Evo Ceram, Venus, and Grandio have similar band shape in the region between 1,200 and 600 cm-1 (silica stretch region).
The infrared spectroscopy of initial feed mixtures was characterized by a broad peak at 3282 cm−1 (O H stretch), 2921 and 2852 cm−1 (C H stretch), 1743 cm−1 (C=O stretch) and intense peak at 1031 cm−1 (C O stretch) region.
Zeolites are among the most important catalyst materials, but below ~1,800 cm−1 are opaque to infrared radiation; however, they are transparent to neutrons, thus the combination of INS to study the 'fingerprint region' with infrared spectroscopy to study the O H stretch region is very powerful and enables access to the complete 0 4,000 cm−1 spectral range.
For α = 6, the results were qualitatively similar but the stretch ratios were closer to 1. Due to the Poisson effect, the high stretch region was also associated with substantial compression along the third principle axis, however some of the material was stretched along all three axes (Fig. 4).
Bands in the C-H stretching region indicate the presence of CH3 and CH2 groups.
The spectra showed the CC and CO stretching region (1300-800 cm−1) to be sensitive to the retrogradation process.
The ex situ IR reflection absorption measurements were performed under near-grazing conditions (80°), yielding changes mainly in the C H stretching region.
The presence of well-resolved IR bands allowed an unequivocal relative quantitative analysis of each species, avoiding the use of the carboxylate stretching region (1600 1200 cm−1600 1200
Analysis of the carbonyl stretching region from FTIR showed increased degree of hydrogen bonding for the urethane carbonyl groups of the nanocomposites compared to the neat matrix.
