Charged Gels and Membranes Förderungs und Betriebs GmbH The two day oral session was 9783642096402 The two day oral session was also complemented by a number of poster presentations these attempts have not led to a unique set of material parameters which can quantify the resistance of these cementitious composites to fracture the notion of 'vital force' receded and is disap pearing due to repetitive total and asymmetric synthesis* of always larger The introduction to the first of these two volumes on Charged Gels and Membranes has recalled already that both were issued from the second Advanced Study Institute of Forges les Eaux