La vie sexuelle des grecs anciens

In this paper, the authors present their point of view concerning the sexuality of the Ancient Greeks and try to improve the reputation of their sexual practices.     

Social behavior adaptations of gibbon (Hylobates lar) in a controlled environment

A population of six adolescent—adult gibbons (three males and three females) were observed in a controlled environment in order to assess any social behavior adaptations related to forced aggregation and to a physical environment which differed from the native habitat in that there were no predators, no food scarcity and the geographic range was limited to 1.5 acres. Data on location, size and composition of naturally formed social groupings revealed that certain gibbons avoided social contact with certain others. This observation is discussed in relation toChance's (1967) concept of “attention structure.” It is viewed as representative of a dominance hierarchy serving gibbons as a social behavior adaptation when forced to aggregate.     

Mass spectrometry of some N-acyldaunosamine derivatives

The principal modes of fragmentation subsequent to electron impact of some N-acyl derivatives of daunosamine, the glycoside moiety of the antitumour antibiotics daunomycin and adriamycin, have been studied by using specifically deuterated derivatives and high-resolution measurements. In particular, the elimination of MeOH from methyl β-daunosaminides is shown to occur extensively and stereo-specifically, and involves HO-4. The splitting of the moieties C-1-C-2 and C-5-O-5 affords the fragments D₂, D′₂, and D′′₂, which are among the most abundant.