abundance ratio

abundance ratio

[ə′bən·dəns ′rā·shō]
(nucleonics)
The ratio of the number of atoms of one isotope to the total number of atoms in a mixture of isotopes. Also known as abundance.
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Although no pattern was seen regarding extrusion rates and body shape (perciform versus clupeiform), greater extrusion was suggested by the somewhat higher predicted abundance ratio of engraulid (clupeiform) larvae 1-2 mm in length compared with that of similar-size scombrid (perciform) and sciaenid (perciform) larvae.
We calculated trap success (number of captured rodents/number of trapnights), species richness, abundance ratio ([TS.sub.i]/[TS.sub.total]), the Shannon-Weaver Diversity Index, and hantavirus antibody prevalence by species, habitat, and trap session.
The cell abundance ratio of thycopelagic species at Station 1 facing the outer ocean was larger than that at Station 2.
The major species in the defined microbial consortia with highest abundance ratio are found to be Brevundimonas diminuta, Alcaligenes faecalis, Stenotrophomonas acidaminiphila, Bacillus cereus and Desulfosporosinus meridiei (Table 1).
Total count and individual radioelements are displayed as pseudo-colored images to show the supply of the three radioelements or as abundance ratio images.
The vulcanized rubber composition comprises a phase (SBR phase) comprising a styrene butadiene rubber being incompatible with a butadiene rubber and silica and a phase (BR phase) comprising a butadiene rubber and silica, wherein the SBR phase and the BR phase are incompatible with each other, an abundance ratio a of silica in the SBR phase after vulcanization satisfies 0.3 [less than or equal to] [alpha] [less than or equal to] 0.7 (relation 1) and a proportion [beta] of the styrene butadiene rubber being incompatible with the butadiene rubber satisfies 0.4 [less than or equal to] [beta] [less than or equal to] 0.8 (relation 2), and the tire has a tread composed of the vulcanized rubber composition.
The virus-toprokaryote abundance ratio (VPR) was calculated using the data set of bacterioplankton, previously published by Hakspiel-Segura et al.
Torres-Peimbert, "The [O.sup.++]/[H.sup.+] abundance ratio in gaseous nebulae derived from recombination lines," Astrophysical Journal Letters, vol.
The AOA:AOB amoA gene abundance ratio was significantly different between WA and SA (Fig.
In 1961, Osterbrock and Rogerson would elegantly summarize the situation relative to estimating helium abundances in the Sun: "Though helium is observed in the upper chromo-sphere and in prominences, the physical conditions in these regions are too complicated and imperfectly understood for the abundance ratio to be determined from measurements of these emission lines.
Abundance ratio of a predator with its different available preys (p/p ratio) ) was then calculated by dividing the density of preys with the density of a predator in a particular month.
Fenofibrate generated parent ions at m/z 361 and 363 in an abundance ratio of 3:1, a distinctive pattern related to the presence of chlorine in the chemical composition.