Results 251 to 260 of about 185,114,065 (299)
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Recent developments in the theory of emanation thermal analysis
Thermochimica Acta, 1987Abstract A report of recent developments in the theory of the emanation thermal analysis of porous and dispersed solids is given. A mathematical model of the inert gas release during non-isothermal heating of solids is suggested, describing the behaviour of porous and dispersed solids on heating, taking into account the annealing of structure defects,
J. Kříž, V. Balek
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Recoil-emanation theory applied to radon release from mineral grains
Geochimica Et Cosmochimica Acta, 1990Abstract In this paper the α-recoil emanation theory is presented as a major mechanism for Rn release from solid materials. The basic theory is developed for Rn emanation from geometrical shapes: spheres and cylinders having variable thickness of precursor-Ra containing material.
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Editor's Comments: Internationalizing Theory—How “Fusion Theory” Emanates from Down Under
Academy of Management Review, 2013The editorial comments on the development of management and organization theory from the perspective that this periodical is biased toward the U.S. The article argues the international growth of the Academy of Management's meeting program is affecting this periodical's content and the selection of its editorial board.
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Journal of Thermal Analysis and Calorimetry, 2002
The theoretical background for the use of radon diffusion as a probe of microstructure changes in solids is given. The high sensitivity of the emanation thermal analysis (ETA) in the study of solid state processes especially interactions taking place on surfaces and in the near surface layers is described.
I. N. Beckman, V. Balek
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The theoretical background for the use of radon diffusion as a probe of microstructure changes in solids is given. The high sensitivity of the emanation thermal analysis (ETA) in the study of solid state processes especially interactions taking place on surfaces and in the near surface layers is described.
I. N. Beckman, V. Balek
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Journal of Thermal Analysis and Calorimetry, 2002
Computer modelling of time dependences of radon release rate during hydration of 3CaO·SiO2 was carried out. It was demonstrated that the emanation thermal analysis (ETA) can be used for the characterisation of morphology changes during hydration of Portland cement clinker minerals.
V. Balek, I. N. Beckman
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Computer modelling of time dependences of radon release rate during hydration of 3CaO·SiO2 was carried out. It was demonstrated that the emanation thermal analysis (ETA) can be used for the characterisation of morphology changes during hydration of Portland cement clinker minerals.
V. Balek, I. N. Beckman
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Empirical Software Engineering, 1997
The paper of Briand et al. criticizes the approach of using measurement theory in software engineering. A careful analysis of the statements of Briand et al. showed , that Briand et al. focus mainly on scale types. However, scales types are only one aspect of measurement theory, another important aspect of measurement theory are the empirical and ...
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The paper of Briand et al. criticizes the approach of using measurement theory in software engineering. A careful analysis of the statements of Briand et al. showed , that Briand et al. focus mainly on scale types. However, scales types are only one aspect of measurement theory, another important aspect of measurement theory are the empirical and ...
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Theory of Emanation Thermal Analysis IX. Inert gas release during thermal decomposition of solids
Journal of Thermal Analysis and Calorimetry, 1999In the Emanation Thermal Analysis the release of inert gas atoms previously incorporated in the sample is measured. Results of the statistical modelling of the inert gas release during thermal decomposition of solids are presented. The updated model supposing three components in the solid-state reaction system including the formation of an intermediate
I. N. Beckman, V. Balek
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Theory of emanation thermal analysis. I. Mathematical model for inert gas release from porous solids
Thermochimica Acta, 1983Abstract The expression for the emanation rate due to recoil and to the diffusion of inert gas in pores is given for a solid spherical body labelled by the appropriate parent nuclides. This model describes a solid with radial cylindrical pores of both uniform and general distribution sizes.
J. Kříẑ, V. Balek
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Thermochimica Acta, 1984
Abstract The mathematical model for the inert gas release from porous solids has been experimentally verified. The structure relaxation and sintering of the following solids have been investigated by the emanation thermal analysis at constant heating rate: silica gel, thoria powder, ferric oxide powder of various thermal history, commercial ferric ...
V. Balek, J. Kříẑ
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Abstract The mathematical model for the inert gas release from porous solids has been experimentally verified. The structure relaxation and sintering of the following solids have been investigated by the emanation thermal analysis at constant heating rate: silica gel, thoria powder, ferric oxide powder of various thermal history, commercial ferric ...
V. Balek, J. Kříẑ
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Thermochimica Acta, 1989
Abstract The results are given of the investigation into the influence of the energy spectrum of defect sites in solids occupied by inert gas atoms (used as the label of solid samples) on the thermostimulated gas release rate curves. The model curves of the temperature dependences of the inert gas release were investigated using several methods, such
A.V. Sheleznov, I.N. Beckman, V. Balek
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Abstract The results are given of the investigation into the influence of the energy spectrum of defect sites in solids occupied by inert gas atoms (used as the label of solid samples) on the thermostimulated gas release rate curves. The model curves of the temperature dependences of the inert gas release were investigated using several methods, such
A.V. Sheleznov, I.N. Beckman, V. Balek
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