At the above mentioned formula, q t is the amount of the adsorbed 90Sr on the CuO NPs/Ag-clinoptilolite.
Spacing metrics obtained by mentioned formula show that NSGA-II provides non-dominated solutions that have less average value of spacing metrics.
Crystallinity index was calculated based on the previously mentioned formulae, and it was found that the lipid core of the nanoparticles was 43% crystalline.
Some above mentioned formulae were proved by Abazari and Kilicman [27] or Mirzaee and Lafiti [28] but with many mistakes and in incorrect way, respectively.
The formula for greywater was in accordance with COD 200 mg/L (Eslami et al. 2017a; Hourlier et al. 2010; Zhu et al. 2014), and also to prepare CODs of 50, 200, 300, 400, and 600 mg/L, the formula for making greywater was diluted/concentrated according to the mentioned formula.
Examining various margins of error ranging from 0% to 50% with R being 1.15, 1.40 and 1.90 and the CV of the generation time ranging from 0 to 1, the above mentioned formulae (14) and (15) are used with significance level at α = 0.05 and, for the latter formula, the power is set at 1−β = 0.80.
Improvement degree was calculated based on the FSSG or GSRS score before and after treatment, using the following mentioned formula.
Using the previously mentioned formula, it can be shown that for the case where the populations were not contracting, we would have a small percentage of the patients under treatment relapsing every year during the study (unless the LSCs were to be eternal).
In a one way sensitivity analysis, this value was assumed to range between 0.04 and 0.11, with the lower figure representing the underlying probability of dying in sub-Saharan Africa, and the upper figure calculated using the above mentioned formula and Davies' upper estimate [ 8].
