Viscosity is an intrinsic property of a fluid caused by friction between its own molecules layer while flowing. It would not only offer a decisive effect on the motion characteristics of the fluid, but also affects its application scopes. As a result, quickly and accurately understanding the physical feature of a fluid has always been an important target [1]. So far, the viscometers, the instru...

Panovská Z., Váchová A., Pokorný J. (2012): Effect of thickening agents on perceived viscosity and acidity of model beverages. Czech J. Food Sci., 30: 442–445. The effect of thickening agents – methyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, and xanthan gum – solutions on the sensory viscosity was investigated in the concentration range of 0–0.8%. The perceived viscosi...

Precursors derived from the hydrolysis of organic or inorganic salts have been widely used to produce ceramic coatings for a broad variety of applications. When applying the liquid precursors to the substrates, it is extremely challenging to control the film uniformity and homogeneity. The rate of solvent evaporation at different locations is different, causing the viscosity variation and flows...

First-principles molecular-dynamics simulations based on density-functional theory and the projector augmented wave ~PAW! technique have been used to study the structural and dynamical properties of liquid iron under Earth’s core conditions. As evidence for the accuracy of the techniques, we present PAW results for a range of solid-state properties of lowand high-pressure iron, and compare them...

The surface shear viscosity of the liquid expanded phase in Langmuir monolayers of fluorinated alcohols differs by orders of magnitude from the corresponding surface shear viscosity of Langmuir monolayers of their non-fluorinated counterparts. The line tension between the liquid expanded and the gaseous phase on the other hand is of similar magnitude for both fluorinated and non-fluorinated sur...