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Time of useful consciousness ( TUC ), also effective performance time ( EPT ), is defined as the amount of time an individual is able to function effectively (e.g. perform flying duties) in an environment of inadequate oxygen supply. [ 1] It is the period of time from the interruption of the oxygen supply or exposure to an oxygen-poor ...
Counts per minute (abbreviated to cpm) is a measure of the detection rate of ionization events per minute. Counts are only manifested in the reading of the measuring instrument, and are not an absolute measure of the strength of the source of radiation. Whilst an instrument will display a rate of cpm, it does not have to detect counts for one ...
The chart was founded in 2004 and was first published on 1 September that year. The first artist ever to reach number one was Irish boy band Westlife. [2] Since then, as of 13 April 2013, 200 different artists have reached number-one on the UK Singles Downloads Chart as either a main or featured artist. The following table lists those artists.
He charted further No. 1 singles on various Billboard R&B charts with "You Know I Love You," "Please Love Me" and "You Upset Me Baby." [ 1 ] Between 1958 and 1974 he had 10 top 10 hits on the R&B chart, including "Sweet Sixteen," "Chains And Things," "I Like To Live the Love" and one of his most well-known hits, " The Thrill Is Gone ."
UEIT - Universal Electronic Test Chart ( russian: УЭИТ - Универсальная электронная испытательная таблица) is a Soviet / Russian test card, designed to test TVs operating in the analogue SECAM colour standard. [ 1][ 2][ 3] UEIT was developed by N. G. Deryugin and V. A. Minaev at the NII Radio ...
In the most familiar acuity test, a Snellen chart is placed at a standard distance: 6 metres. At this distance, the symbols on the line representing "normal" acuity subtend an angle of five minutes of arc, and the thickness of the lines and of the spaces between the lines subtends one minute of arc. This line, designated 6/6 (or 20/20), is the ...
Landolt C. Lea test. logMAR chart. An eye chart is a chart used to measure visual acuity comprising lines of optotypes in ranges of sizes. Optotypes are the letters or symbols shown on an eye chart. [ 1] Eye charts are often used by health care professionals, such as optometrists, physicians and nurses, to screen persons for vision impairment.
List of reagent testing color charts. It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2] For this reason it is essential to use multiple different tests to show all adulterants.