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The surface-area-to-volume ratio has physical dimension inverse length (L −1) and is therefore expressed in units of inverse metre (m −1) or its prefixed unit multiples and submultiples. As an example, a cube with sides of length 1 cm will have a surface area of 6 cm 2 and a volume of 1 cm 3. The surface to volume ratio for this cube is thus
Specific leaf area is a ratio indicating how much leaf area a plant builds with a given amount of leaf biomass: S L A = A M L {\displaystyle SLA\ =\ {\frac {A}{M_{L}}}} where A is the area of a given leaf or all leaves of a plant, and M L is the dry mass of those leaves.
where A is the total leaf area of a plant. The first component is called the 'Leaf Area Ratio' (LAR) and indicates how much leaf area there is per unit total plant mass. For young plants, values are often in the range of 1–20 m 2 kg −1, for tree seedlings they are generally less.
The "dilution factor" is an expression which describes the ratio of the aliquot volume to the final volume. Dilution factor is a notation often used in commercial assays. For example, in solution with a 1/5 dilution factor (which may be abbreviated as x5 dilution ), entails combining 1 unit volume of solute (the material to be diluted) with ...
One of the most important features of chemostats is that microorganisms can be grown in a physiological steady state under constant environmental conditions. In this steady state, growth occurs at a constant specific growth rate and all culture parameters remain constant (culture volume, dissolved oxygen concentration, nutrient and product concentrations, pH, cell density, etc.).
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Tree shape profiles can be calculated individually for each tree encountered. However, examining the profiles of a large number of trees of different species found that typical profiles varied in a regular pattern, and for each profile family there was a Crown Form value that could be used to calculate the volume of the crown.
GOP Rep. Byron Donalds, a top Trump ally in Congress, seems more vocal about running for Florida governor in 2026 in the race to succeed term-limited Republican Gov. Ron DeSantis.