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The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart.It is calculated as the time from the start of the Q wave to the end of the T wave, and approximates to the time taken from when the cardiac ventricles start to contract to when they finish relaxing.
The photothermal ratio is relatively constant over the year in the tropics, with lowland values around 1.3 mol m −2 day −1 °C −1.At higher latitudes PTR changes with seasons, being high in spring, and low in autumn.
Platinum disulfide is the inorganic compound with the formula Pt S 2.It is a black, semiconducting solid, which is insoluble in all solvents.The compound adopts the cadmium iodide structure, being composed of sheets of octahedral Pt and pyramidal sulfide centers.
The parent PT is an insoluble colored solid with the formula (C 4 H 2 S) n. [notes 1] [2] [3] The rings are linked through the 2- and 5-positions. Poly(alkylthiophene)s have alkyl substituents at the 3- or 4-position(s). They are also colored solids, but tend to be soluble in organic solvents. PTs become conductive when oxidized.
Passer rating (also known as passing efficiency in college football) is a measure of the performance of passers, primarily quarterbacks, in gridiron football. [1] There are two formulas currently in use: one used by both the National Football League (NFL) and Canadian Football League (CFL), and the other used in NCAA football.
Averages per game are denoted by *PG, e.g. PPG (points), BLKPG or BPG (blocks), STPG or SPG (steals), APG (assists), RPG (rebounds) and MPG (minutes).Sometime the players statistics are divided by minutes played and multiplied by 48 minutes (had he played the entire game), denoted by * per 48 min. or *48M.
A percentage point or percent point is the unit for the arithmetic difference between two percentages.For example, moving up from 40 percent to 44 percent is an increase of 4 percentage points (although it is a 10-percent increase in the quantity being measured, if the total amount remains the same). [1]
In case of a tie, point totals are added together and divided among all golfers tied for a particular position at the end of a tournament. For example, if four golfers finish tied for fifth place, the fifth through eighth place points are summed and divided by four, with each of the golfers receiving the same number of points.