Lubricating greases are colloid disperse systems consisting of a base oil and a thickener (additional additives). The lubricant is modeled as a tribological system, and the reaction of a fluid friction stress is investigated. The energetic situation of the volume element is analyzed and the system entropy described. The description of the structural degradation and the used entropy was realized...

Abstract. We consider a nonconvex conservation law modelling the settling of particles in ideal clarifier-thickener units. The flux function of this conservation law has an explicit spatial dependence that is discontinuous. Previous works by two of the authors, together with collaborators, have been aimed at providing a firm rigorous ground of mathematical (global existence and uniqueness) and ...

This work demonstrates the usefulness of SilA laccase from Streptomyces ipomoeae to functionalize Kraft lignin be used as a thickener in preparation biodegradable oleogels for lubricating...

Purpose. Improvement of the method for estimating sedimentation process parameters slurry solid phase particles in thickener on basis measurements nonlinear characteristics ultrasonic waves propagating a controlled medium. Methodology. The following methods were used: analysis scientific results and practical developments; mathematical statistics evaluating experiments; analytical synthesis; nu...

Introduction. The article presents the results of testing a developed methodology for assessing effect geometric deviations on stress-strain state metal structures an overbridge at facility «Tailings Thickener 1», located Natalka Mining Processing Plant. A brief review previously performed studies recording is provided, along with confirming relevance problems solved in and study general. It wa...

The perception of sweetness and flavour were studied in viscous solutions containing 50 g/l sucrose, 100 p.p.m. iso-amyl acetate and varying concentrations of three hydrocolloid thickeners (guar gum, lambda-carrageenan and hydroxypropylmethyl cellulose). Zero-shear viscosity of the samples ranged from 1 to 5000 mPas. Perception of both sweetness and aroma was suppressed at thickener concentrati...