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Thermal conductivity (increasing with temperature) and viscosity (decreasing with temperature) of multiwalled carbon nanotube (MWCNT)–water nanofluid at 1 wt %, with a COOH acid group, Triton’s X-100(TrX) at 0.25 weight percent, or Arabic Gum (AG) at 0.25 wt % surfactants shown using measurements [45].
