An alternative test is presented, in which algal cultures are used for testing toxic substances. This test system is based on variations in the size distribution of cells in test cultures as a measurement of growth. Thus, inhibition of mitotic activity is used as a measurement for toxic effects. The test can be performed on a short time-scale and is very sensitive to even weak toxic doses.
AbstractWe present time series observations of the Herbig Ae star V351 Ori. This star presents light variations on short time scale (a few hours), typical of the δ Scuti pulsation. The new data are briefly described and the possibility to observe V351 Ori with the WET is discussed.
Nitrogen cycling in an estuarine upwelling system, the Ría de Arousa (NW Spain). I. Short-time-scale patterns of hydrodynamic and biogeochemical circulation