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Publikováno v:
Scripta Materialia. 55:123-126
Three-dimensional images of intermetallic particles and of voids embedded in the 5182 aluminium alloy are obtained by synchrotron X-ray absorption tomography. The images are processed and analysed in order to quantify the evolution of the morphology
Publikováno v:
Journal of Alloys and Compounds. 256:234-243
The partial substitution of manganese for vanadium in the perovskite-like sheets of Bi 4 V 2 O 11 has allowed to stabilize at room temperature the structure of γ-Bi 4 V 2 O 11 for 0.15≤ x ≤0.50. Magnetic measurements have shown that the manganes
Publikováno v:
Physica B: Condensed Matter. 215:427-434
The mixed valent Tl-1222 ferrite TlSr 4 Fe 2 O 9 has been prepared and characterized using various techniques. Its structural features as well as chemical analyses evidenced that this compound shows some non-stoichiometry and that it can be formulate
Publikováno v:
Journal of Applied Meteorology. 34:1449-1458
The concept of standardized Linke's turbidity factor TLAM2 allows the conversion of the usual TL values, which exhibit virtual diurnal variations into new ones, which are strictly representative of the atmospheric turbidity caused by both water vapor
Publikováno v:
Solar Energy. 52:303-313
A model of Linke's turbidity factor, TL, is developed by means of updated spectral extraterrestrial irradiances and extinction coefficients of gaseous absorbers. It is shown that the new values of TL are clearly different from those obtained by Kaste
Publikováno v:
Solar Energy. 51:93-100
Simultaneous measurements of horizontal global solar irradiance were done over three years, at altitudes ranging from 200 m to 1,700 m in an industrial alpine valley, for studying the clearness index variations versus height. Estimated values of the
Publikováno v:
Journal de Physique III
Journal de Physique III, EDP Sciences, 1991, 1 (11), pp.1755-1764. ⟨10.1051/jp3:1991229⟩
Journal de Physique III, EDP Sciences, 1991, 1 (11), pp.1755-1764. ⟨10.1051/jp3:1991229⟩
Une nouvelle méthode de préparation est décrite, l'oxydation électrochimique de La2CuO4+δ en milieu alcalin; elle a permis d'obtenir un matériau supraconducteur en deçà de 45 K. Les caractéristiques structurales et physico-chimiques de cette
Publikováno v:
Journal of the Less Common Metals. :862-869
La 2 CuO 4 ceramics prepared by different methods, in particular by electrochemical oxidation and single crystals undoped and doped with Sr or Ba, were studied at various temperatures by laser local heating. Evidence of two orthorhombic isophases in