However, the identification of additives is a difficult task due to the elusive character of these substances present at low concentration in the paint.
Clinical use of rSLURPs should avoid nicotine-like toxicity, such as off-target and nonreceptor intracellular effects, because SLURPs are the physiological substances produced at low levels by IEC [ 25] and immunocytes [ 60] that alter cell functions by acting at nAChRs [ 46, 47].
Materials with tightly bound atoms or molecules, such as the crystals formed below melting temperature by most substances or simple compounds and the amorphous structures formed in glass and many polymer substances at sufficiently low temperature, are usually considered solids.
Recent advances demonstrate that surface enhanced resonance Raman scattering (SERRS) obtained from suspensions of colloidal silver can be used quantitatively to detect specific substances at extremely low concentrations.
Spurred by the advent of new, highly sensitive, analytical methods capable of detecting substances at very low levels, there have been numerous attempts at identifying a stable and specific biomarker.
A biological antioxidant is defined as a substance, which, at low concentrations compared to that of the oxidisable substrate, significantly delays or prevents this oxidation [ 6, 27, 28].
These substances become waxy at low temperatures, so they are usually blended in small quantities with petroleum diesel.
