Main peaks

Their effects are illustrated in figure B1.11.4 which is a H-decoupled C NMR spectrum of the same sample of paracetamol, obtained without such precautions. The main peak integrals are displayed both as steps and... 

During the course of biochemical studies (138). the mass spectrum of 2-acetamidothiazole was recorded its main peaks are the molecular ion (m/e= 142, relative intensity = 26%) and fragments 100 (100), 58 (2. 5), and 43 (39). For 2-acetamido-5-bromothiazole the main peak results again from the loss of C2H2O by the molecular ion. 2-AcetyIacet-amido-4-methylthiazole (2S) exhibits significant loss of from the... 

Positive-ion electrospray mass spectrum of human hemoglobin (a) as initially obtained with all the measured masses, and (b) after calculation of true mass, as in Figure 8.3. The spectrum transforms into two main peaks representing the main alpha and beta chains of hemoglobin with accurate masses as given. This transformation is fnlly automated. The letters A, B, C refer to the three chains of hemoglobin. Thus, A13 means the alpha chain with 13 protons added. 

The XPS survey spectrum of a 75 nm thick film of plasma polymerized acetylene that was deposited onto a polished steel substrate is shown in Fig. 18 [22]. This film consisted mostly of carbon and a small amount of oxygen. Thus, the main peaks in the spectrum were attributed to C(ls) electrons near 284.6 eV and 0(ls) electrons near 533.2 eV. Additional weak peaks due to X-ray-induced O(KVV) and C(KLL) Auger electrons were also observed. High-resolution C(ls) and 0(ls) spectra are shown in Fig. 19. The C(ls) peak was highly symmetric. 

Peak position (eV) Shift from main peak (eV) Percentage of total C(ls) area Assignment... 

FIG. 10 Micelle size distribution for H2T2 surfactants within the Larson model. The dashed lines show fits to the expected form for spherical micelles (main peak) and cylindrical micelles (tail). Inset shows the tail of the distribution on a semi-logarithmic plot to demonstrate the exponential decay predicted for the cylindrical micelles. (From Nelson et al. [120].)... 

In figure 1 the DOS along the [110] or [110] directions (solid and dashed line respectively, parallel to the surface) shows two pronounced peaks at 1.25 and 1.6 THz, while for Cu adatoms on Cu(lOO) a single peak at 2.0 THz was found . This shift towards lower frequencies is somewhat expected, because the Au adatom is heavier than the Cu atom. The DOS at the normal direction (thick dashed line in Figure 1) shows a main peak at... 

In the case of Cu(l 11) face, the Au adatom presents almost similar phonon modes for both the in-plane directions (solid and dashed line in Figure 3) at 0.7THz, which can be compared with that of Cu adatom on the same surface (1. ITHz). There is now again a shift to lower frequencies, due to the different mass of the two elements. The DOS at the perpendicular to the surface direction ( thick dashed line in Figure 3) shows a main peak at 1.7 THz, which appears in energetically lower position, compared with that of Cu adatom (3.2 THz) ... 

Figure 4.18. Peak-size correlation in an HPLC-chromatogram. The impurity profile of a chemical intermediate shown in the middle contains peaks that betray the presence of at least two reaction pathways. The strength of the correlation between peak areas is schematically indicated by the thickness of the horizontal lines below the chromatogram. The top panel gives the mean and standard deviation of some peak areas (n = 21) the two groups of peaks immediately before and after the main peak were integrated as peak groups.

When coincidences apply, for example, when the time between injections is such that the main peak co-elutes with a late peak from a previous injection. 

To characterize the difference between two chromatograms, an overall mismatch index and a list of the areas, helglits, and positions of the main peaks in the difference chromatogram are provided. The difference chromatogram is the result of subtracting the standard chromatogram for that class of specimen from the chromatogram of the specimen. 

A 5 wt.% CoOx/Ti02 catalyst gave the most promising activity for continuous catalytic wet oxidation of trichloroethylene at 310 K with a unsteady-state behavior up to 1 h. The catalyst after the oxidation possessed a Co 2p3/2 main peak at 779.8 eV, while the peak was obtained at 781.3 eV for a fiosh sample. Only reflections for C03O4 were indicated for these samples upon XRD measurements. The simplest model for nanosized C03O4 particles existing with the fi"esh catalyst could reasonably explain the transient activity behavior. 

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