(J) The nitrate levels in plasma of rats and in cell culture supernatants of MS1.
The following April, soil nitrate levels were similar among all treatments each year, showing a "reset" of nitrate levels reflecting weather in the fall, winter and spring.
A variety of indicators -- dissolved oxygen, turbidity, salinity, low nitrate levels -- all seem to favor survival, according to the students.
For this project, we are only testing for soil nitrate levels.
Under normal weather conditions, nitrate levels decline rapidly after peaking, but plant stress conditions may prevent this decline.
Nitrate levels in diverted river water are rapidly reduced as water flows through coastal watersheds.
Low effluent nitrate levels can be achieved with dual anoxic systems with optimal hydraulic retention times.
As ammonium, but not nitrate, levels declined in the wet sedge meadow, N2O emissions correspondingly decreased.
Nitrate levels are limited due to health concerns in potable water.
CSF and serum total nitrite, direct nitrite and nitrate levels were determined spectrophotometrically.
Lower nitrate levels in the coastal springs were well represented by the mixing models.
