Peak position and width

An example plot of / and g distributions is shown in Fig. 6.4. Note that in general, the / and g distribution functions are not identical [cf. (6.15) one exception is the case of a NEW calculation with a reversible transition path, see Sect. 6.4.2]. They have different peak positions and widths (aj and a2g) characterizing the distributions. 

The data in Table I show that fraction chromatogram peak positions and widths appear to approach limiting values (7.64-7.68 and 0.92... 

The interfaces formed by evaporating copper, nickel and chromium layers on polystyrene, polyvinyl alcohol, polyethylene oxide, polyvinyl methyl ether, polyvinyl acetate and polymethyl methacrylate have been studied with X-ray photoemission spectroscopy (XPS). At submonolayer coverages of the metals, the peak positions and widths of the metallic electron core levels vary significantly from one polymer substrate to another. Most of... 

The situation in aluminosilicate glasses is complicated by the additional effects of next-nearest-neighbour Al on the Si shifts. Although some Q" sites can be unambiguously assigned, others such as Q (OAl) and Q (3A1) occur in the same chemical shift range and cannot be differentiated on this basis. Systematic variations in the Si peak positions and widths of sodium aluminosilicate and calcium aluminosilicate glasses can... 

Dehydration of the small-pore zeolite analcime (NaAlSi20e) has also been studied by high-temperature Na NMR measurements up to 500°C (Kim and Kirkpatrick 1998) in which changes in the Na peak positions and widths with temperature were interpreted in terms of exchange between the Na sites and the effect of motional averaging of the intensity of the ( 1/2, 3/2) satellite transitions. 

In the visible Raman spectra the cross section of the sp phase is much higher (50-250 times for 514.5 nm) than that of the sp phase. Hence UV Raman spectroscopy (Renishaw 2000 system) with a He- Cd laser (325 nm wavelength) was used for vibrational studies of the sp -bonded carbon phase. The resulting spectra recorded at different points at the surface besides the D- and G-band demonstrated a new feature in the range 1328 1332cm , which corresponds to the CVD-deposited nanocrystalline-sized diamonds (Figure 3.9b). The curve shape analysis of this band, i.e. its peak position and width provides information about the size of the CVD-deposited diamond crystallites [30]. With diamond size decreasing from 1000 nm to... 

In the following subsections, these approaches are reviewed. It is important to remark here that the deduction of affinity spectra from binding (titration) curves is a hard numerical problem, where the accuracy of the resulting spectrum depends critically on the quality of the input data it is well known that exact distributions can only be obtained with accordingly exact data even with 1% random deviations, variations in the results are found. Besides, titration curves are sensitive only to the main moments of the distribution (peak positions and width) thus in the absence of additional information, further details cannot be obtained (Merz 1980 Borkovec et al. 1996 Orsetti, Andrade, and Molina 2009). 

Distribution of Particle Size It is aU but impossible that every solute molecule or particle has exactly the same hydrodynamic radius in a given solution. There is always a dishibution in as illustrated in Figure 3.16. The peak position and width of the distribution vary from sample to sample. The distribution in leads to a distribution in the diffusion coefficient and therefore a distribution in the decay rate T of gi(T). Then, gi(T) is not a simple exponential decay. 

Figure 9. (right) Temperature dependence of the peak position and width of the long-wavelength absorption band of P in Rb. sphaeroides and Rps. viridis RCs. A and V are the position and half-width (at half maximum), respectively, for P in Rb. sphaeroides the circles and squares are the position and full-width (at half-maximum) for P in Rps. viridis. (Figure taken from [29],) Note the similarity between the temperature dependence of these data and the temperature dependence of the lifetime of F shown in Fig. 8. 

Effects on Dissolved Analytes (Peak Position and Width)... 

Figure 6. S(Q,w) for solid K. The solid line corresponds to approxirruitely one half of the melting temperature, the dashed and dotted curves are ttvo independent calculations at about nine-tenths melting. The system consisted of 432 atoms interacting via the potential from Ref. 24 truncated after eight shells of neighbors. The inset shows the temperature variation of the peak position and width compared with experiment (error bars) and lattice dynamical calculations (25).

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