Another recent study, by scientists from the U.K., Hawaii and Massachusetts, concluded that «marine and freshwater assemblages have always experienced variable pH conditions,» and that «in many freshwater lakes, pH changes that are orders of magnitude greater than those projected for the 22nd - century oceans can
occur over periods of hours.
Not exact matches
Many Facebook experts recommend this «get to know you» phase to
occur in 24
hours or less, but we've seen it work for that
period of time as well as
over an entire week.
Stroke What it is: Most strokes
occur when a blood clot blocks an artery or a blood vessel, interrupting blood flow to an area
of the brain
over a
period of minutes or
hours, causing brain cells to die.
Acute inflammation
occurs over seconds, minutes,
hours, and days; for example swelling after an injury; while chronic inflammation
occurs over long
periods of time and is associated with chronic diseases such as diabetes, heart disease and obesity.
Rather, the events displayed in Darkest
Hour occur over the span
of the two - and - a-half week
period between Churchill's appointment to the position and the events
of the successful civilian - manned evacuation at Dunkirk.
The measurements should be taken during school
hours over a suitable time
period to be able to quantify the representative sound pressure level, likely to
occur during teaching
hours and should include noisy events — such as peak time road traffic, but should exclude rare, intermittent events, such as the mowing
of school lawns.
After strict «chill out» time
of 24 - 36
hours during which the cat is not handled, evaluation should then
occur daily
over the following 3 — 4 days for the 5 - day holding
period.»
In general, the majority
of all precipitation
occurs as isolated 1 - day events, while most extreme precipitation
occurs over a
period of several
hours embedded within 2 - 5 day events.
So whilst most
of the radiation losses (
over land) within the atmospheric windows will
occur during the
period between mid morning and early evening, radiation at wavelengths around the absorption peaks will be pretty constant during any given 24
hours.