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. 2020 Jan 20;10(1):176. doi: 10.3390/nano10010176

Figure 2.

Figure 2

Electrical conductivity (mS/cm) test in buffaloberry (A) and green alder (B) upland boreal forest species. Values in bar chart represent means ± standard errors. Letters indicate significant difference at α = 0.05. Control = no CNPs added. MWCNT–COOH = multiwall carbon nanotubes functionalized with carboxylic acid, MWCNT = multiwall carbon nanotubes and Up-con = up-conversion nanophosphors.