Preface (Professor Šestak’s Biography)

Jaroslav was born in the village ‘Držkov’ (North Bohemian Mountains) where he still possesses a small farm. He obtained a degree MEng in silicate chemistry (1962) and PhD in solid state physics (1968, both in Prague) latter degree was approved while he spend a year at the University of Missouri at Rolla as an assistant professor in ceramics (UMR 1970). He got married when working in Sweden (1969, Studsvik Nuclear Research Center) with a MEng graduate from Prague (Věra) who joined and then supported Jaroslav when he was staying at USA where she received her second degree in ceramics (M.S., UMR 1970). Since that Jaroslav and Věra have two children, daughter Elizabeth (Bětka, *1977) and boy Paul (*1980) who graduated in economics (B.S. 2007).
He lives at the address: V stráni 3, CZ-15000 Prague, Czech Republic;

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websites: www.fzu.cz/~sestak

Title: Thermal behavior of ground talc mineral

Abstract

Microstructure development and thermal behavior of  ground talc mineral samples (from locality Puebla de Lillo,Spain) was characterized by X-ray diffraction, scanning electron microscopy(SEM),surface area measurement...

Title: The synthesis and properties of the phases obtained by solid-solid reactions

Abstract

The presented work encompasses the subject of the studies and the results obtained over the last years by the research workers of the Department of Inorganic Chemistry. They include mainly the studies on the reactivity of...

Title: The effect of lanthanides on colour properties of the (Bi₂O₃)_0.7(Ln₂O₃)_0.3 compounds

Abstract

(Bi₂O₃)_0.7(Ln₂O₃)_0.3 solid solutions were synthesized as new inorganic yellow and orange pigments and their colour properties have been investigated as possible ecological materials. The pigments were prepared by the...

Title: Thermal analysis study of polymer-to-ceramic conversion of organosilicon precursors

Abstract

The organosilicon precursors attract significant attention as substances, which upon heating in inert or reactive atmosphere convert directly to oxide or non-oxide ceramics, like nitrides, carbides, carbonitrides,...

Title: Generalized Ellingham Diagrams for Utilization in Solid Oxide Fuel Cells

Abstract

Generalized Ellingham diagram for the P-O-H and the Ni-P-OH systems have been constructed to investigate thermodynamically the chemical stability of nickel anode against the gaseous impurities containing phosphorous...

Title: Thermodynamic calculations in Alloys Ti-Al, Ti-Fe, Al-Fe and Ti-Al-Fe

Abstract

Thermodynamic calculations of three binary Ti-based alloys: Ti-Al, Ti-Fe, and Al-Fe, as well as ternary alloy Ti-Al-Fe, is shown in this paper. Thermodynamic calculations involved thermodynamic determination of activities, coefficient...

Title: Characterization of kaolin dispersion using acoustic and electroacoustic spectroscopy

Abstract

The objective of this work is the investigation of the kaolin dispersion by the ultrasonic techniques. In contact with aqueous solution clay minerals show cation - exchange properties and certain degree of dissolution or rather...

Title: Development of oxidation heat of the coal left in the mind-out area of a longwall face – Modelling using the fluent software

Abstract

A commercial CFD software program, Fluent, was used to study oxidation processes in the longwall mined-out (gob) area. A three-dimensional model of the gob area with an advancing  coal face has been developed...

Title: Study of Ce_0.9Tb_0.05Ln_0.05O_1.975 compounds as ceramic pigments

Abstract 

New inorganic pigments based on CeO2 were synthesized as high-temperature environmentfriendly inorganic pigments. This work is focused on mixed oxides based on ceria which are doped by rare earth elements, i.e...

Title: Preparation of Strontium hexaferrite magnets from celestite and blue dust by mechanochemical route

Abstract

In the present investigation celestite (natural ore of strontium) and blue dust (iron ore fines) have been used for the preparation of strontium hexaferrite powder. The mechanical alloying process has been adopted to prepare...

Title: Effect of solid fraction on the mechanical properties of Thixomolded Magnesium alloys

Abstract

Title: The Effect of antimony presence in anodic copper on kinetics and mechanism of anodic dissulation and cathodic deposition of copper 

Abstract

The influence of the presence of Sb atoms, as foreign metal atoms in anode copper, on kinetics, and, on the mechanism of anodic dissolution and cathodic deposition of copper in acidic sulfate solution has been investigated...

Title: Voltammetric Investigations Of Anodic Dissolution Of Natural mineral Chalcopyrite

Abstract

Anodic oxidation of the natural mineral chalcopyrite from the Bor ore deposit has been studied by cyclic voltammetry in pure sulfuric acid solutions.  At the obtained voltammograms, the appearance of peaks at...

Title:   Influence pressure and time to extraction by supercritical CO₂

Abstract     

 The supercritical fluid extraction (SFE) by carbon dioxide (CO₂) of Salvia officinalis L. was investigated. SFE by CO₂ was performed at different pressure (80, 100, 150, 200 and 300 bar) and constant temperature of 40ºC ...

Title: Effect of optical basicity on the viscosity of oxide systems

Abstract

Viscosity of oxide systems, including slags, can be determined by high temperature experiments, or calculated by chemical / empirical models. Optical basicity is a chemical parameter based on the ionic nature of...

New Book: Researches on Rare Earths - History and Technology

A selected collection of papers by the author and his co-workers on the history andextractive metallurgy of the rare earths to which an outline on the recovery of rare earths from different sources has been specially written. The position of rare earths in the Periodic Table is also discussed. Fully illustrated 125 pages in color. The author is Professor Emeritus at Laval University in Quebec City, Canada.

ISBN 978-2-922686-15-9
Published November 2008 by: Métallurgie Extractive Québec 800 rue Alain # 504, Quebec City Canada G1X 4E7
Distributed by: Laval University Bookstore Zone Pavillon Maurice-Pollack, Cité Universitaire, Québec City, Canada G1V0B4.
Tel.: (418) 656-2600, Fax: (418) 656-2665.

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