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Both quantitative modeling and response surface methodology suggested that methanol to water ratio percent and extraction temperature were the most effective parameters of UAE process.
Three independent variables including temperature, methanol to water ratio percent, and sonication time were studied for simultaneous optimization of antioxidant capacity, total phenolic content and extraction yield.
For example, the ratio percent of the Y-intercept with the variable data at nominal concentration is used to estimate the method variability.
In order to avoid the interferences related to physical dishomogeneity of the precursors, Cu/Zn/M catalysts (38 38 24, atomic ratio percent, where M = Cr, Al or Ga) obtained by thermal decomposition of hydrotalcite-type anionic clays were used.
The sodium adsorption ratio, percent sodium, permeability index, residual sodium carbonate, magnesium ratio and Kelly's ratio were computed and USSL, Wilcox and Doneen's diagrams were also used for evaluation of groundwater quality for irrigation.
This study was undertaken to study the statistical correlation between lecithin/sphingomylein (L/S) ratio, percent phosphatidylglycerol (%PG), lamellar body count (LBC), and surfactant-to-albumin ratio (TDx-FLMII) in amniotic fluid (AF); and derive gestational age-specific (GA) predicted risk of neonatal respiratory distress syndrome (RDS) for LBC and TDx-FLMII.
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When comparing proportion data (ratio, percents), we carried out the ANOVA on arcsine of square-root-transformed raw data.
Sharpe ratios, percent worst draw downs, recovery periods from drawdown, and portfolio rate of returns are used for performance comparisons.
Since a portion of the tensile stress after cracking was resisted by the steel fibers, low reinforcement ratios (percent) of 0.94 and 1.50 % were selected.
We evaluated confounding by ozone and the holidays Memorial Day, Independence Day, and Labor Day (which all occur in the first or last week of the month) by comparing the risk ratios (percent increase/100 + 1) for AT from models with and without inclusion of the confounders (ozone or holidays).
Table 3 shows the performance ratio in percent between serial d2o and numpy.
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