Results 221 to 230 of about 891 (263)
Some of the next articles are maybe not open access.
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Thermochimica Acta, 1984
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
openaire +1 more source
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
openaire +1 more source
2001
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.
openaire +1 more source
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.
openaire +1 more source
Theory of emanation thermal analysis
Thermochimica Acta, 1987J. Kr̆íz̆, V. Balek
openaire +1 more source
İbn Sînâ felsefesinde Sudûr teorisi = Theory of emanation in The Philosophy of Avicenna / [PDF]
Sudûr teorisi, başka bir deyişle feyz teorisi, Plotinus'tan başlayarak felsefe tarihinde hep var olmuş bir teoridir. İslam dünyasında Fârâbî ve İbn Sînâ gibi filozoflar teoriyi geliştirmişler ve felsefi sistemlerinde bu teorik malzemeyi kullanmışlardır. Buna karşılık, sudûr teorisini ve teorinin savunucuları olan Fârâbî ve İbn Sînâ'yı Gazzâlî, İbn Rüşd
Sylla, Ousmane, 1990- 201125 author +2 more
openaire
Theory of emanation thermal analysis
Thermochimica Acta, 1986A.A. Shviryaev, I.N. Beckman, V. Balek
openaire +1 more source