Bacterial communities and enzyme activities of PAHs polluted soils.

Three soils (i.e. a Belgian soil, B-BT, a German soil, G, and an Italian agricultural soil, I-BT) with different properties and hydrocarbon-pollution history with regard to their potential to degrade phenanthrene were investigated.

[Recurrent asthmatic bronchitis in the first years of life: a 3-year follow-up].

The natural history of asthma is not well known; its origin may go back to just after the birth. The aims of this study are: 1) studying the evolution of the symptomatology of a group of children suffering from recurrent asthmatic bronchitis of a moderate-severe level in the first two years of life; 2) inquiring some risk factors conditioning the evolution of it. One hundred children, aged from 16.