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Being dimensionless, its unit is 1; it is expressed as a number, e.g., 0.18. It is the same concept as volume percent (vol%) except that the latter is expressed with a denominator of 100, e.g., 18%. The volume fraction coincides with the volume concentration in ideal solutions where the volumes of the constituents are additive (the volume of ...
cl − = 100 bun = 20 / glu = 150 \ k + = 4 co 2 = 22 pcr = 1.0 arterial blood gas: hco 3 − = 24 p a co 2 = 40 p a o 2 = 95 ph = 7.40 alveolar gas: p a co 2 = 36 p a o 2 = 105 a-a g = 10 other: ca = 9.5 mg 2+ = 2.0 po 4 = 1 ck = 55 be = −0.36 ag = 16 serum osmolarity/renal: pmo = 300 pco = 295 pog = 5 bun:cr = 20 urinalysis: una + = 80 ucl ...
The airborne fraction is a scaling factor defined as the ratio of the annual increase in atmospheric CO 2 to the CO 2 emissions from human sources. [1] It represents the proportion of human emitted CO 2 that remains in the atmosphere. Observations over the past six decades show that the airborne fraction has remained relatively stable at around ...
It is the simplest of the aldehydes (R−CHO). As a precursor to many other materials and chemical compounds, in 2006 the global production of formaldehyde was estimated at 12 million tons per year. [14] It is mainly used in the production of industrial resins, e.g., for particle board and coatings. Small amounts also occur naturally.
Leibniz wrote that circles "can most simply be expressed by this series, that is, the aggregate of fractions alternately added and subtracted". [118] However this formula is only accurate with a large number of terms, using 10,000,000 terms to obtain the correct value of π / 4 to 8 decimal places. [119]
In later stages, computing devices began representing numbers in continuous forms, such as by distance along a scale, rotation of a shaft, or a specific voltage level. Numbers could also be represented in the form of digits, automatically manipulated by a mechanism.
A modern consumer CPU made by Intel: An Intel Core i9-14900KF Inside a central processing unit: The integrated circuit of Intel's Xeon 3060, first manufactured in 2006. A central processing unit (CPU), also called a central processor, main processor, or just processor, is the primary processor in a given computer.