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The lake retention time for a body of water with the volume 2,000 m 3 (71,000 cu ft) and the exit flow of 100 m 3 /h (3,500 cu ft/h) is 20 hours.. Lake retention time (also called the residence time of lake water, or the water age or flushing time) is a calculated quantity expressing the mean time that water (or some dissolved substance) spends in a particular lake.
Expiration dates for infant formula should not be ignored. [6] If formula is stored too long, it may lose its nutritional value. [6] The expiration date of pharmaceuticals specifies the date the manufacturer guarantees the full potency and safety of a drug. Most medications continue to be effective and safe for a time after the expiration date.
An expiration date is a predetermined date after which a particular product should no longer be used. The phrase may also refer to: Expiration Date, a 2006 comedy; Expiration Date (Powers novel), a novel by Tim Powers; Expiration Date (Swierczynski novel), written by Duane Swierczynski
"Sell by date" is a less ambiguous term for what is often referred to as an "expiration date". Most food is still edible after the expiration date. [6] A product that has passed its shelf life might still be safe, but quality is no longer guaranteed.
Water stagnation for as little as six days can completely change bacterial community composition and increase cell count. [3] Stagnant water may be classified into the following basic, although overlapping, types: Water body stagnation (stagnation in swamp, lake, lagoon, river, etc.) Surface and ground water stagnation; Trapped water stagnation.
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Perennial water body usually refers to mainly liquid fresh water, as opposed to sea and glaciers or other ice. Most frequently the term refers to running water (lotic ecosystems) as in perennial streams and large rivers, but the distinction between perennial and non-perennial water is of equal importance in lentic aquatic ecosystems, those that are associated with relatively still terrestrial ...
6. Seafood. Seafood, especially shellfish and salmon, can contain harmful bacteria and viruses when consumed past their expiration dates. Eating expired seafood can result in a nasty bout of food ...