survival ratio

survival ratio

[sər′vī·vəl ‚rā·shō]
(biology)
The number of organisms surviving irradiation by ionizing radiation divided by the number of organisms before irradiation.
References in periodicals archive ?
Under the head of Green Highways, 302,785 plants have been planted near posts and in their beat areas, respectively and their survival ratio is 41%, Last year, three new posts were being operationalized two existing Rajanpur namely; Shah Wali and Khakhar and 01 in Toba Take Singh named as 284/JB.
Survival ratio has registered an improvement with an upward shift observed among all age groups as compared to the census data of the previous decade.
The cell survival ratio was expressed as percent of PI-negative cells per control cells which were cultured in nanoparticle-free medium.
The three-year survival ratio is an estimate of the number of years that current reserve levels can support recent loss-payout patterns.
In this way, this study will analyze how long it took for PPs that fell behind others to close their business, as well as identify trends in the survival ratio.
Part of the residual discrepancy may be explained by Grayson's assumption that usable army service records cover only one-quarter of all servicemen, even though the accepted survival ratio for these documents is two-fifths (including an unknown proportion of files so badly damaged as to be unsearchable by address).
For example, the number of native-born white men age 20-24 counted by the 1860 census (1,055,632), is divided by the number age 10-14 in the 1850 census (1,147,038), to yield a ten-year survival ratio of 0.
Chapters on modeling and simulation discuss direct calculation of survival ratio and isothermal time equivalent in heat preservation processes, new kinetic models for inactivation of bacterial spores, modeling heat transfer in thermal processing, heat transfer in rotary processing of canned liquid/particle mixtures, numerical model for ohmic heating of foods, and computational fluid dynamics.
The survival ratio of the two selected families was 87% and 93% after the occurrence of mass-mortality caused by abalone amyotrophia, whereas that of the four other families ranged from 0% to 37%.
The independent variables required for the regression analysis are (i) child-woman ratio (ii) proportion of females married (iii) infant mortality rate (iv) female survival ratio of 15-40 years of age (v) age composition of women in various reproductive age groups.
Hutchings (1993) tested these predictions with data from three Newfoundland brook trout (Salvelinus fontinalis) populations, and found, in accordance with theory, that reproductive effort declined with an increase in the adult-to-juvenile survival ratio and also that the population with the highest adult-to-juvenile survival ratio had the latest mean reproductive age.
Although slightly different conventions have emerged for scoring viability in Giardia muris and Giardia lamblia excystation experiments, the general excystation procedure is to consider the disinfection survival ratio being the ratio of the fraction of excysted organisms in an experimental system to the fraction excysted in an unexposed control population.
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