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The blood volume is 70 ml/kg body weight in adult males, 65 ml/kg in adult females and 70-75 ml/kg in children (1 year old and over). [ 5 ] [ 6 ] Total Blood Volume has been measured manually by the use of carbon monoxide (CO) as a tracer for more than 100 years and was first proposed by French scientists Grehant and Quinquaud in 1882.
one kilogram (kg) is 1000 grams; one kilometre (km) is 1000 metres; one kilojoule (kJ) is 1000 joules; one kilolitre (kL) is 1000 litres; one kilobaud (kBd) is 1000 bauds; one kilohertz (kHz) is 1000 hertz; one kilodalton (kDa) is 1000 daltons; one kilobit (kb) is 1000 bits; one kilobyte (kB) is 1000 bytes; one kiloohm is (kΩ) is 1000 ohms
The spelling "liter" is predominantly used in American English. [a] One litre of liquid water has a mass of almost exactly one kilogram, because the kilogram was originally defined in 1795 as the mass of one cubic decimetre of water at the temperature of melting ice (0 °C). [4]
The base units are defined in terms of the defining constants. For example, the kilogram is defined by taking the Planck constant h to be 6.626 070 15 × 10 −34 J⋅s, giving the expression in terms of the defining constants [1]: 131 1 kg = (299 792 458) 2 / (6.626 070 15 × 10 −34)(9 192 631 770) h Δν Cs / c 2 .
The mass of one breath is approximately a gram (0.5-5 g). A litre of air weighs about 1.2 g (1.2 kg/m 3). [20] A half litre ordinary tidal breath [11] weighs 0.6 g; a maximal 4.8 litre breath (average vital capacity for males) [11] weighs approximately 5.8 g.
The imperial gallon was originally defined as 10 pounds (4.5359 kg) of water in 1824, and refined as exactly 4.54609 litres in 1985. Traditionally, when describing volumes, recipes commonly give measurements in the following units:
In a 72 kg (159 lb) body containing 40 litres of fluid, about 25 litres is intracellular, [9] which amounts to 62.5%. Jackson's texts states 70% of body fluid is intracellular. [10] Extracellular fluid (1/3 of body water) is fluid contained in areas outside of cells.
L kilogram: kg mass "The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10 −34 when expressed in the unit J s, which is equal to kg m 2 s −1, where the metre and the second are defined in terms of c and ∆ν Cs." [1]