In this paper, we discuss the structure of the Ramond N = 2 superconformal algebras. We classify the modules of the intermediate series over Ramond N = 2 superconformal algebra.

4 Museum National d’Histoire Naturelle, CNRS UMR 5176, 4 avenue du Petit Château, 5 91 800 Brunoy, France 6 7 Abstract 8 9 We analysed by an optical method (the small volume method) the composition 10 and the vertical distribution of an organic soil which accumulated over an old petroleum 11 tar deposit. The study site was an oil refinery now colonised by woody vegetation since 12 the time of a...

An efficient synthesis of the 1-hydroxy-2-(prop-2'-enyl)9-anthrone is described. Selective nitration of anthraquinone, reduction to the corresponding amine, diazotization and treatment by sulfuric acid solution afforded the 1-hydroxy-9,10-anthraquinone in good yield as the key intermediate. Reaction with allyl bromide/K2CO3 and subsequent selective reduction accompanie...

Exposing individuals to an isolated component (a prime) of a prior event alleviates its forgetting. Two experiments with 120 human infants between 3 and 18 months of age determined the minimum duration of a prime that can reactivate a forgotten memory and how long the reactivated memory persists. Infants learned an operant task, forgot it, were exposed to the prime, and later were tested for re...

A new Gray map between codes over F2 +uF2 +uF2 +uF2 + ....+ uF2 and codes over F2 is defined. It is proved that the Gray image of a linear (1− um)-cyclic code over F2 + uF2 + uF2 + uF2 + .... + uF2 of length n is a binary distance invariant quasi-cylic code of index 2m−1 and length 2mn. It is also proved that if n is odd, then every code of length 2mn over F2 which is the Gray image of a linear...