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  2. Vapor quality - Wikipedia

    en.wikipedia.org/wiki/Vapor_quality

    The above expression for vapor quality can be expressed as: = where is equal to either specific enthalpy, specific entropy, specific volume or specific internal energy, is the value of the specific property of saturated liquid state and is the value of the specific property of the substance in dome zone, which we can find both liquid and vapor .

  3. Hill equation (biochemistry) - Wikipedia

    en.wikipedia.org/wiki/Hill_equation_(biochemistry)

    The Hill equation reflects the occupancy of macromolecules: the fraction that is saturated or bound by the ligand. [1] [2] [nb 1] This equation is formally equivalent to the Langmuir isotherm. [3] Conversely, the Hill equation proper reflects the cellular or tissue response to the ligand: the physiological output of the system, such as muscle ...

  4. P50 (pressure) - Wikipedia

    en.wikipedia.org/wiki/P50_(pressure)

    The fractional saturation Y O2 of the myoglobin is what proportion of the total myoglobin concentration is made up of oxygen-bound myoglobin, which can be rearranged as the concentration of free oxygen over the sum of that concentration and the dissociation constant K. Since diatomic oxygen is a gas, its concentration in solution can be thought ...

  5. Saturated absorption spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Saturated_absorption...

    Another counter-propagating weak beam is also sent through the atoms at the same frequency, known as the probe beam. The absorption of the probe beam is recorded on a photodiode for various frequencies of the beams. Although the two beams are at the same frequency, they address different atoms due to natural thermal motion.

  6. Relative permeability - Wikipedia

    en.wikipedia.org/wiki/Relative_permeability

    Each of the phase saturations must be larger than the irreducible saturation, and each phase is assumed continuous within the porous medium. Based on data from special core analysis laboratory (SCAL) experiments, [2] simplified models of relative permeability as a function of saturation (e.g. water saturation) can be constructed. This article ...

  7. Fick's laws of diffusion - Wikipedia

    en.wikipedia.org/wiki/Fick's_laws_of_diffusion

    Fick's first law relates the diffusive flux to the gradient of the concentration. It postulates that the flux goes from regions of high concentration to regions of low concentration, with a magnitude that is proportional to the concentration gradient (spatial derivative), or in simplistic terms the concept that a solute will move from a region of high concentration to a region of low ...

  8. Mass fraction (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Mass_fraction_(chemistry)

    It is one way of expressing the composition of a mixture in a dimensionless size; mole fraction (percentage by moles, mol%) and volume fraction (percentage by volume, vol%) are others. When the prevalences of interest are those of individual chemical elements , rather than of compounds or other substances, the term mass fraction can also refer ...

  9. Fraction of inspired oxygen - Wikipedia

    en.wikipedia.org/wiki/Fraction_of_Inspired_Oxygen

    Fraction of inspired oxygen (F I O 2), correctly denoted with a capital I, [1] is the molar or volumetric fraction of oxygen in the inhaled gas. Medical patients experiencing difficulty breathing are provided with oxygen-enriched air, which means a higher-than-atmospheric F I O 2 .