Density: Difference between revisions
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== References == | |||
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Revision as of 17:03, 26 May 2020
Description
Density is frequently a quantity divided by volume: mass density or mass concentration is mass per volume, MΒ·V-1 [kgΒ·m-3]; radiant energy density is radiant energy per volume, QΒ·V-1 [JΒ·m-3]; charge density is charge per volume, QΒ·V-1 [CΒ·m-3]. However, electric current density is current divided by area, j=IΒ·A-1 [CΒ·m-2]. Number density of entities or number concentration is numbers per volume, CB = NBΒ·V-1 [xΒ·m-3]. In contrast, the amount-of-substance concentration, cB = nBΒ·V-1 [molΒ·m-3] is not called a substance density (IUPAC). Thus the sample mass concentration is CmX = mXΒ·V-1 [kgΒ·m-3], the mitochondrial concentration is CmtE = mtEΒ·V-1 [mtEUΒ·m-3], whereas the specific mitochondrial density is DmtE = mtEΒ·mX-1 [mtEUΒ·kg-1], and the mitochondrial content per object X is mtENX = mtEΒ·NX-1 [mtEUΒ·x-1] (BEC 2020.1).
Abbreviation: Ο, C, D
Reference: BEC 2020.1, Cohen 2008 IUPAC Green Book
References
Bioblast link | Reference | Year |
---|---|---|
Bureau International des Poids et Mesures 2019 The International System of Units (SI) | Bureau International des Poids et Mesures (2019) The International System of Units (SI). 9th edition:117-216. ISBN 978-92-822-2272-0 | 2019 |
Cohen 2008 IUPAC Green Book | Cohen ER, Cvitas T, Frey JG, HolmstrΓΆm B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor HL (2008) Quantities, Units and Symbols in Physical Chemistry. IUPAC Green Book 3rd Edition, 2nd Printing, IUPAC & RSC Publishing, Cambridge. | 2008 |
Gnaiger 2020 BEC MitoPathways | Gnaiger E (2020) Mitochondrial pathways and respiratory control. An introduction to OXPHOS analysis. 5th ed. Bioenerg Commun 2020.2. https://doi.org/10.26124/bec:2020-0002 | 2020 |
Gnaiger 2020 MitoFit x | Gnaiger E (2021) The elementary unit β canonical reviewer's comments on: Bureau International des Poids et Mesures (2019) The International System of Units (SI) 9th ed. MitoFit Preprints 2020.04.v2. https://doi.org/10.26124/mitofit:200004.v2 | 2021 |
BEC 2020.1 doi10.26124bec2020-0001.v1 | Gnaiger E et al β MitoEAGLE Task Group (2020) Mitochondrial physiology. Bioenerg Commun 2020.1. https://doi.org/10.26124/bec:2020-0001.v1 | 2020 |
MitoPedia concepts: Ergodynamics