The coded and actual values of the studied variables at various levels Code Variables Low Medium High level(-1) level(0) level(1) F1 Precursor concentration (M) 0.5 1 2 F2 Reductant
concentration (v/v) 0.5% 5% 10% F3 Temperature ([sup.R"]C) 30 40 50 Table 4.
composition that is fed into the uf LNT is different compared to the engine out reductant
composition that reached the cc LNT.
Cyclic Voltammetry experiments on the standard AgNPs (0.02 mg/mL, 20 nm AgNPs colloidal dispersion) and AgNPs samples prepared using watermelon rind extract as the reductant
and stabilizing agent were carried out to confirm whether AgNPs were present in the samples prepared using the green chemistry method.
[H.sub.2] is also a good candidate for the reductant
since [H.sub.2] can be converted into a proton by photocatalyst [27-36].
It was reported that plants extracts contain biomolecules including polyphenols, ascorbic acid, flavonoids, sterols, triterpenes, alkaloids, alcoholic compounds, polysaccharides, saponins, [beta]-phenylethylamines, glucose and fructose, and proteins/enzymes which could be used as reductant
to react with silver ions and therefore used as scaffolds to direct the formation of AgNPs in the solution.
In order to maintain a safe turnover of the ATP and reductant
pools sustained by light reaction, neutral lipid synthesis is upregulated because fatty acid production needs more ATP and reductant
than other substance production in cell; neutral lipids store significantly more energy and its synthesis requires twice energy than carbohydrate or protein .
FRAP assay reported by Benzie and Strain (1996), and which depends upon the reduction of ferric [Fe(III)-TPTZ] to [Fe(II)-TPTZ] complex by a reductant
at low pH, was adopted.
It is also concluded that extract of Conocarpus erectus leaves can be utilized as a good reductant
for the non-toxic or green synthesis of metal (Ni) nanoparticles.
A gaseous reductant
derived from ammonia based additives or urea is used in this system.
Ascorbate is the principal reductant
of chromium (VI) in rat liver and kidney ultrafiltrates.