Recurrence first partial

Figure 9.1 Motion of a wavepacket in coordinate space. Panels (a) - (f) depict six times in the evolution of an initially Gaussian wavepacket. The wavepacket is launched at the Franck-Condon point of a repulsive potential surface of a Y-X-Y triatomic molecule. The v coordinate (symmetric stretch) is bound and the u coordinate (antisymmetric stretch) is unbound. The wavepacket oscillates along v (the first partial recurrence is in frame e) and spreads along u (from Heller, 1978).

Figure 9.2 Relationships between features in the autocorrelation function, ( < (r)), and lineshapes in the frequency domain spectrum, I(u>). The times indicated as r0,r(,...ry in the top frame correspond to the wavepacket depicted at six times in Fig. 9.1. The width of the initial decay of the autocorrelation function, <5, is related to the overall width of /(ui). The time delay between the initial launch of the wavepacket and the first partial recurrence of the autocorrelation function, T, is encoded as oscillations at w = 27r/T in /(u ). (from Heller, 1978)...

We therefore advise that the reader should consult a recent series of papers published by Galvez et al. [171, 172] encompassing all the mechanisms mentioned in Sect. 7.1, elaborated for both d.c. and pulse polarography. The principles of the Galvez method are clearly outlined in the first part of the series [171]. It is similar to the dimensionless parameter method of Koutecky [161], which enables the series solutions for the auxiliary concentration functions cP and cQ exp (kt) and

combined directly with the partial differential equations of the type of eqn. (203). In some of the treatments, the sphericity of the DME is also accounted for. The results are usually visualized by means of predicted polarograms, some examples of which are reproduced in Fig. 38. Naturally, the numerical description of the surface concentrations at fixed potential are also immediately available, in terms of the postulated power series, and the recurrent relationships obtained for the coefficients of these series. 

Partial or generalized epileptic seizures occur for the first time in about 2% of those with acute strokes at around the time of onset, rising to approximately 10% at five years, more with large cortical infarcts or intracranial hemorrhage (Ch. 9) (Ferro and Pinto 2004). Seizures are more common with large strokes, especially if hemorrhagic, and with cortical as opposed to lacunar strokes. Cerebrovascular disease is the most common cause of epilepsy in the elderly, and late-onset epilepsy is a predictor of subsequent stroke (Cleary et al. 2004). Seizures may cause neurological deterioration or be mistaken for recurrent stroke. Intractable recurrent seizures are distinctly unusual. 

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