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Geotextiles have been extensively used in hydraulic structures as revetment filters subjected to wave loads. The alternating flow through the geotextile creates a flow regime very different from the unidirectional flow condition that has been extensively studied. The stability of the revetment system depends on many factors, such as the hydraulic properties of geotextile, the initial placement condition and particle size distribution of the subsoil, and the intensity of the wave loads. A new laboratory apparatus has been used to investigate the influence of the hydraulic conditions on the behavior of soil-geotextile interaction and the stability of the revetment system. One series of tests has been conducted simulating cyclic flow conditions normal to the soil-geotextile interface. Preliminary test results are presented and discussed in this paper.

Two children with toxic shock-like syndrome due to streptococcal infection are reported. In both cases (one fatal) the site of infection was in the soft tissues. Both strains of group A hemolytic streptococci isolated from blood culture produced large amounts of erythrogenic toxin B (ET B) small amounts of ET C but no ET A. This report confirms the implication of Streptococcus pyogenes in toxic shock like syndromes. When ET A seems to be responsible for most cases observed in the USA, our cases and others observed in Europe could be related to strains producing large amounts of ET B.

Resume Les auteurs rapportent un cas d'arthrite septique a Aeromonas hydrophila, Plesiomonas shigelloideset Klebsiella oxytoca, du a une contamination par de l'eau saumatre. Un drainage et un parage chirurgical ont ete realises et une antibiotherapie adaptee a ete mise en place. L'evolution a ete favorable.