INDEX appearance potential

D.R. Chopra, Appearance potential spectroscopy of lanthanides and their intermetallics 519 Author index 547... 

Levetiracetam acts in a manner different to other antiepilepsy drugs. It has a potentially broad spectrum of use but is currently indicated for adjunctive treatment in partial seizures with or without secondary generalisation. It is rapidly and completely absorbed after oral administration, and is effective with twice-daily dosing. Its therapeutic index appears to be high and the commonest of the adverse effects are asthenia, dizziness and drowsiness. 

The Pariser-Parr-Poplc (PPP) method is based on three assumptions (a) Whenever the factor, (n), (n) (where i n is any electron index) appears in the integrand the integi al vanishes zero differential overlap approximation) (b) The resonance integrals between nearest neighbours are treated as empirical parameters those between non-neighbours are neglected (c) The one-centre Coulomb integrals ii, it) are taken to be equal to /, — E where I, and E, are the ionization potential and electron affinity, respectively, of the atomic orbital tpi, when the atom is in the appropriate valence state. 

M.A. Subramanian and A.W. Sleight, Rare earth pyrochlores 225 R. MiyawaM and I. Nakai, Crystal structures curare earth minerals 249 D.R. Chopra, Appearance potential spectroscopy of lanthanides and their intermetallics 519 Author index 547 Subject index 579... 

The first chapter presents the general aspects of the reaction Chapters 2-6 illustrate the various methods and their applications in organic synthesis. At the end of each chapter a list of graphically abstracted Diels-Alder reactions is presented to show selected synthetic applications of the specific methodology. The discussion of the various topics is not exhaustive because our aim has been to emphasize the synthetic potential of each method. Chapter 7 reports a list of books, reviews, monographs and symposia proceedings which have appeared since 1990 and an index of keywords to help the reader find a particular paper of interest. 

---