The cone–disk apparatus consists of a cone that touches the disk at its apex and is used in medical evices, viscosimeters, conical diffusers, etc. Theoretically, three-dimensional flow nanofluid gap studied for four different physical configurations. Buongiorno model, consisting thermophoresis Brownian diffusion mechanisms, to describe convective heat transport nanofluid. continuity equation, N...

In order to determine by viscometric methods (l), the effect of the hydrogen ion concentration of starch substrates upon the activity of the amylase of Aspergillus oryxa! (taka-diastase), it was first necessary to ascertain the effect of acid and alkali alone upon the viscosity of starch solutions. E$ect of Hydrogen Ion Concentration upon the Viscosity of Unbu$ered Starch Solutions.-10.2 gm. of...