from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Floating on the surface.
- n. The clear fluid above a sediment or precipitate.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Lying above a sediment or precipitate
- adj. Floating on the surface of a liquid
- n. The liquid that lies above a sediment or precipitate; supernate
- n. Material that floats on the surface of a liquid
from the GNU version of the Collaborative International Dictionary of English
- adj. Swimming above; floating on the surface.
from The Century Dictionary and Cyclopedia
- Swimming above; floating on the surface.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the clear liquid that lies above a sediment or precipitate
- adj. of a liquid; floating on the surface above a sediment or precipitate
The cell culture supernatant was regularly tested for reverse transcriptase activity.
Following 5-10 min at 90°C, the hemoglobin in crude Fraction I was "cooked" and precipitated like mud, and the activity remained soluble in the supernatant.
Depending on the filter design, flow rates may have to be adjusted accordingly or the layer of supernatant water on the filter will get too high.
Filter cleaning starts with drainage of the supernatant water and dewatering of the top part of the sand bed.
Filter cleaning must be carried out once the supernatant water has reached its maximum permissible level; i.e., when maximum filter resistance of about 1 meter is attained for the designed filtration rate.
Missing supernatant drainage system ® long drainage periods for dewatering the filter box will affect the biology in the sand bed
The top should be covered by a layer of coarse stones to shade the supernatant water and thus prevent algal growth often experienced in pretreated water exposed to the sun.
This is also true for the recommended inlet controlled slow sand filters which compensate the progressive headloss development by a gradual increase of the supernatant water level.
In practice, the stock of supernatant water is drained through the filter at a continuously declining flow rate during the night and in the morning hours, the filter is refilled with pretreated water to reassume normal operation.
The crude oil is left to stand for three days and the clarified supernatant oil (35.8 kg) is poured off leaving 11.2 kg of sediment