Line bulges

Nenchev, M. Deneva, M. Laser device for generating fixed frequency radiation along a reference atomic absorption line. Bulg. Pat. Appl. BG 109300, 2007 Chem. Abstr. 2007, 147, 511120. 

In dc magnetic applications, an air-gap is usually required somewhere along the magnetic path of the core. In ferrite cores, the gap is placed in the center-leg of the core. The flux leaves one end of the core and flows towards the opposing end. The flux, though, repels itself and causes the flux lines to bulge out away from the centerline of the core. The presence of an air-gap creates an area... 

Fig. 8.21. Cumulative distribution function of specific angular momentum in the thin disk (broken line), thick disk (dots and long dashes), halo (dots and short dashes) and bulge (solid line), after Wyse and Gilmore (1992). Courtesy Rosemary Wyse.

Let us assume that a small bulge appears on a rough, curved interface, and that for some reason the interface morphology is altered. Intervals between the lines of equal temperature or concentration become narrower at the bulge hence, the... 

The bulge in the centre of the bond flux-bond length correlation in Fig. 7.1 is, however, unexpected and is quite unlike the behaviour shown by any other cation (cf. Fig. 3.1). As pointed out below, the reason for this bulge is the repulsion between the donor and acceptor 0 ions. The bulge is an artefact of anion-anion repulsion and is not intrinsic to the H-O bond itself. The thin line in Fig. 7.1 represents a reasonable interpolation between the two ends of the bond flux-bond length curve and indicates the correlation that might be expected if there were no anion-anion repulsion. 

Use the concepts of this chapter to discuss the existence of the bulge or line at the edge of the monolayer. 

The best way to find thin, bulging tubes when the heater is off line is to run a ring down the length of a tube. A really severe bulge may be visually observed, even when the heater is in service. Sagging tubes do not represent thin tubes. I have seen radiant-section, horizontal tubes sag by more than one tube diameter and operate for years without failing. 

Slichter, (1959) found that a narrowing of the proton resonance line width occurred 10—20° C above Tg in the case of polyisobutylene and natural rubber but closely at Tg in the case of atactic polypropylene. The two room temperature transitions in polytetrafluoroethylene, which are so clearly visible in the specific heat-temperature curve, Fig. 12, were found by Slichter (1958a) in a fluorine nucleus magnetic resonance study to cause a drop in the second moment with rise of temperature, but the whole effect occurred over the wide temperature range of 225 to 320° K. The slight bulge" in the specific heat-temperature curve of polymethyl methacrylate from 130 to 180° K, Fig. 13, might possibly be correlated with the drop in the NMR second moment between 150° and 200° K found by Powles (1956). 

Let us examine the stresses and distortions that accompany the generation of pressure in this apparatus. In Fig. 1 the original (zero pressure) shapes of piston and cylinder are shown by dotted lines the distortions, shown by the solid lines, due to pressure are exaggerated. The bulging of the piston is most pronounced above the cylinder inside the cylinder the piston is supported by, and rubs on, the wall of the cylinder. The sharp change in radial bursting... 

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