Search results for "COLUMN"
showing 10 items of 1301 documents
¿Europa sin proyecto?
1998
Contestación y utopía
2003
Fin del pensamiento unico
2001
Más allá del 'todo negocio'
2008
Columna escrita para El País, aunque se cree que finalmente no fue publicada.
Europa no está en el Atlántico
2005
La gran Europa
1991
Se trata de la versión no publicada del texto "La Gran Europa". Se desconoce si finalmente fue publicado.
Biomethylation of thallium by bacteria and first determination of biogenic dimethylthallium in the ocean
2000
To investigate a possible biomethylation of thallium, incubation experiments were carried out under aerobic conditions with a sewage sludge and with a mixed bacterial culture isolated from a sewage sludge, as well as under anaerobic conditions with a fresh-water lake sediment, by adding Tl(I) nitrate to these systems. Only in the case of the anaerobic sediment was a significant production of dimethylthallium observed (after three-weeks). Analysing different surface seawater samples and those from a single depth profile down to 4000 m, dimethylthallium was determined above the detection limit of 0.4 ng L−1 in about 20% of all samples, ranging from 0.5 to 3.2 ng l−1. The proportion of dimethy…