Some of the dykes are partly concealed, while some are exposed in stream cuttings, dug well section, and road cuts.
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The basins often cover 250 square km (about 100 square miles) and may expose "disappearing streams".
Because it is shade tolerant it dominates other plants and, being an annual, exposes stream banks to erosion when it dies back in winter.
The community composition in three streams exposed to maximum total pesticide levels between 0.2× and 0.01× acute toxicity to Daphnia (48-h LC50) was clearly distinct from that at three control sites.
A multivariate analysis based on principal response curves indicated that communities in streams exposed to 222 419 mg/L were significantly different from the controls leading to an overall (multivariate and univariate) conclusion that 0.106 mg/L was the ecosystem NOEC.
The inverse problem is defined as heat source surrounded by a solid medium exposed to free stream in external flow.
A couple of studies testing invertebrate communities in Bt- versus non-Bt-exposed streams did not detect negative effects ascribed to the presence of Cry1Ab toxins [23, 24].
Corrosion monitoring is the practice of measuring the corrosivity of process stream conditions by the use of probes (mechanical, electrical, or electrochemical devices) which are inserted into the process stream and continuously exposed to the process stream condition.
The endothelial cell-coated channel was exposed to a stream of platelets for 20 min at a constant flow rate of 30 μL/h.
