Results 181 to 190 of about 300 (224)
Editor's Comments: Internationalizing Theory—How “Fusion Theory” Emanates from Down Under
The 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.
Neal M. Ashkanasy
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Recent developments in the theory of emanation thermal analysis
Abstract 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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The most typical for engineering materials micromechanism is discussed of fracture involving the coalescence process between the main crack and microcrack nucleated ahead of main crack. The appropriate criteria for mathematical description of such process are described.
A. J. Krasowsky
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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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Theory of emanation thermal analysis. I. Mathematical model for inert gas release from porous solids
Abstract 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. Kříž, 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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Abstract An improved mathematical model for the inert gas release from porous solids is proposed. The idea of the recoil atoms' escape via migration along their recoil path and via diffusion in a quasi-continuum, simulating the highly defective solid, has been introduced in this model.
J. Kříž, V. Balek
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Theory of Emanation Thermal Analysis IX. Inert gas release during thermal decomposition of solids
In 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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Averroës and the Theory of Emanation
Barry Sherman Kogan
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