Stretch marks origin

At 321 mn there is a vibronic origin marked This has one quantum of v, the antisynnnetric C-H stretching mode, in the upper state. Its intensity is induced by a distortion along This state has B2 vibrational symmetry. The direct product of B2 and A2 is B, so it has B vibronic syimnetry and absorbs x-polarized light. One can also see a 4 6,, vibronic origin which has the same syimnetry and intensity induced by... 

A larger upward force F is then applied to the drillstring. This causes the free portion of the drillstring to elastically stretch by an amount L (ft). The stretch (or elastic displacement) is measured by the movement of the original reference mark. The magnitude of F is limited by the yield, or elastic limit of the pipe steel. 

One of the signatures of densely tethered chains is expressed in Eq. 5, namely the linear variation of L with N. This stands in marked contrast with free chains where excluded volume interaction produces, at most, an R N3/5 distortion from the R N1/2 unperturbed dimensions. Tethered layers are stretched and this is the origin of their interesting behavior. 

The elongation remaining after a rubber test piece has been stretched for a given time and allowed to rest for a given time it is expressed as a percentage of the original distance between the bench marks. The term permanent set (correctly, permanent set in tension) is still popularly used to denote tension set, see standard BS903-A5. 

Prepare the soil as for raspberries (see p.310). Attach horizontal wires to the wall or fence 9 in (25 cm) apart, starting at about 24 in (60 cm) above soil level and going up to about 5 ft (1.5 m) or stretch the wires between two 5-ft (1.5-m) posts, set 10-12 ft (3-3.5 m) apart. Plant a single plant at the center of the support, or space several plants out according to their vigor. Bury each stool up to the original soil mark on the cane stub and firm it in. 

First, the original mechanism of the CIEEL process involves, as a key tenet, the chemically activated transfer of the electron from the donor (activator) to the acceptor (peroxide) functionality. Indeed, as estimated from electrochemical data, the electron transfer from an activator is endothermic at the equilibrium geometry of the peroxide bond. Thus, the chemical activation process involves stretching of the oxygen-oxygen bond to accommodate the transferred electron. Consistent with the semiempirical computations, the 0-0 bond in the radical anion is markedly elongated relative to the neutral dioxetane (cf. Fig. 1). 

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