http://hdl.handle.net/10195/38124 2013-05-25T13:35:59Z 2013-05-25T13:35:59Z Hyršlová, Jaroslava Bednaříková, Marie Hájek, Miroslav http://hdl.handle.net/10195/32940 2012-02-12T06:02:00Z 2009-01-01T00:00:00Z

Title: Material flow cost accounting. "Only" a tool of environmental management or a tool for the optimization of corporate production processes? Authors: Hyršlová, Jaroslava; Bednaříková, Marie; Hájek, Miroslav Abstract: Environmental Management Accounting (EMA) is considered to be a system providing information to support decision-making mainly within the framework of environmental management. EMA includes also Environmental Cost Accounting which uses an extensive range of methods. Of major significance for the management of corporate processes are primarily the methods based on material and energy flows. The paper focuses on Material Flow Cost Accounting (MFCA). It characterizes MFCA not only as a tool of environmental management, but mainly as a tool for the management of material flows and points out the significance of MFCA information for the optimization of production processes. The paper also includes selected results of research activities focusing on EMA and MFCA application in the Czech Republic.

2009-01-01T00:00:00Z Javůrek, Milan Taufer, Ivan Čermák, Josef http://hdl.handle.net/10195/32939 2012-02-12T06:02:04Z 2009-01-01T00:00:00Z

Title: Programs for teaching of optimization methods Authors: Javůrek, Milan; Taufer, Ivan; Čermák, Josef Abstract: The paper presents two programs for teaching methods of non-linear programming. The model example is a chemical reactor in which a consecutive or reversible reaction takes place. The student's task consists in finding the optimum regime for the reactor, where according to the algorithm of search of the chosen method the independent variable is introduced and the program computes the gradually stabilizing regulated quantity, i.e. the dependent variable. The individual variables are loaded with generated random error, which brings the model closer to real situations.

2009-01-01T00:00:00Z Strnadel, Jaroslav Machač, Ivan http://hdl.handle.net/10195/32938 2012-02-12T06:00:33Z 2009-01-01T00:00:00Z

Title: Wall effects on a single spherical particle moving through a power-law fluid Authors: Strnadel, Jaroslav; Machač, Ivan Abstract: The steady motion of solid spheres through a power-law fluid contained in a cylindrical tube has been solved numerically using a finite element method by means of the COMSOL software package for the steady non-Newtonian flows. From the resulting stress fields, the drag force on the sphere, drag coefficient, drag coefficient corrective factor, and wall correction factor have been evaluated in dependence on the fluid power law index and the sphere-to-tube diameter ratio. The results of numerical computation are in very good agreement with previous theoretical and experimental literature data, which documents suitability of the computational method used.

2009-01-01T00:00:00Z Mikulášek, Petr Velikovská, Pavlína Horčičková, Jana http://hdl.handle.net/10195/32937 2012-02-12T06:00:42Z 2009-01-01T00:00:00Z

Title: Effect of physicochemical conditions on crossflow microfiltration of mineral despersions using ceramic membranes Authors: Mikulášek, Petr; Velikovská, Pavlína; Horčičková, Jana Abstract: This paper studies the influence of dispersion pH, ionic strength, and coagulant type on ceramic membrane microfiltration of TiO2 dispersions. A series of crossflow microfiltration experiments were carried out at various pH values, ionic strengths and with various multivalent inorganic salts. The filtration behaviour was analyzed based on measurements of zeta potential of alumina membrane and TiO2 particle and particle size distribution of the TiO2 suspension. The results show that inorganic anions affect the microfiltration of TiO2 dispersion by changing the surface properties of both the alumina membrane and TiO2 particle. The solution environment affects the dispersion of TiO2 particles and plays a major role in the filtration flux.

2009-01-01T00:00:00Z