Granulation was performed while the flow rate and concentration of the binder were changed as independent operational variables, according to a two-factor central composite design.
The effects of initial dye concentration, adsorbent dose and contact time on the removal efficiency were evaluated and were considered as the operational variables in the present study.
Considering the important effect and interactions of time and temperature, a statistical Box Behnken design was conducted including substrate concentration, time and temperature as operational variables and reducing sugar concentration released as dependent variable.
Considering the important effect and interactions of the variable involved, a statistical Box-Behnken design was conducted including the cited variables as operational variables and concentrations of glucose, fructose, arabinose, acetic acid, furfural and 5- hydroxymethyl -2-furaldehyde (HMF) released as dependent variables.
The process of purification by selective fermentation of raw GOS at 20% (w/w) was optimised in terms of the specific productivity of unwanted carbohydrate removal, considering temperature, pH and RCC as operational variables.
A parametric sensitivity study allows the identification of volume disperse phase fraction (ϕ = 0.2 0.5), agitation rate (200 400 rpm) and airflow rate (0.5 1 vvm) as the main operational variables influencing the biological conversion of -valencene.
The Student's t-test revealed a positive influence (p < 0.05) of all the studied variables on the ferulic and p-coumaric acids extraction from BSG. Linear models were well fitted (R2 > 0.90) to the experimental data to describe the extraction of these acids as a function of the operational variables employed.
My longwinded explanation (left on the ABC News cutting room floor, understandably and thankfully) was this: absent any clear-cut exogenous variable or variables accounting for the decline, it behooves us to attribute, as an operational hypothesis, a good part of the drop-off to women's individual and aggregate choice, plain and simple.
It began as an operational deal, but became a merger.
