Shifting cultivation is widely practiced in many tropical mountainous watersheds. Agricultural practices are changing with the intensification of activities and development industrial monocultures associated increasing land use pesticides fertilisers. These changes have consequences for evolution sediment transfers watersheds, resulting new vulnerabilities inhabitants. This article shows struct...

Diffuse phosphorus (P) export from biosolids application to agricult­ ural land above specified soil P thresholds or incidental losses of nutrients applied as manure or fertilizers during high risk periods, may be linked to deteriorating surface or groundwater quality. However, oui research suggests that not all land has an equal risk of contributing diffuse contaminants to receiving waters, ei...

normal 0 false false false en-us x-none fa microsoftinternetexplorer4 background : erythropoietin (epo) as a major stimulator of red blood cell (rbc) production play a key role on brain protection and have a caring effect on neurons from hypoxic or traumatic injury. the objective of this trial was to study the safety and efficacy of recombinant human epo (rhepo) on level of consciousness and ot...

The diurnal variation of net ecosystem exchange (NEE) showed an unusual pattern at the Blodgett Forest Ameriflux site, with late afternoon NEE lower than early morning (indicating more uptake), while air temperature and atmospheric vapor pressure deficit were much higher. To investigate processes influencing this pattern, NEE was compared to several environmental variables during summer 2002. U...