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Autor:
J.F. Brudny
Publikováno v:
Journal de Physique III. 7:1009-1023
The estimation of induction machine magnetic noise demands to determine accurately all the stator and rotor harmonic flux density components. The main problems are tied to the air-gap permeance expression. By characterizing this permeance through a r
Autor:
G. Barakat
Publikováno v:
Journal de Physique III. 5:1991-2002
The aim of this paper is to present a three dimensional (3D) study and modelling of a 27.8 kW, 36 000 rpm claw-pole synchronous machine, by means of the 3D finite elements method. The 3D magnetic field computation has been carried out by the coupling
Publikováno v:
Journal de Physique III. 5:1469-1480
The kinematics and dynamics of human neutrophils in a narrow glass tube (4.9 μm to 6.3 μm in diameter) have been investigated both experimentally and theoretically. Cells were activated by the tri-peptide (fMLP) to migrate through a tube with a mea
Autor:
G. Quichaud, A. Ihaddadene
Publikováno v:
Journal de Physique III. 5:59-76
Dans un precedent article [10], nous avons presente une machine a courant continu dont le collecteur a subi des modifications qui permettent de mieux l'adapter a l'assistance electronique a la commutation. L'experimentation a reussi et la machine mod
Autor:
S. V. Kabin, V. N. Radchenko, V. K. Pesetsky, V. E. Mosharov, M. W. lpatov, A. A. Orlov, P. D. Nushtaev, A. P. Bukov, A. O. Andreev, S. D. Phonov
Publikováno v:
Journal de Physique III. 4:2317-2327
The results of Luminescence Pressure Sensor (LPS) technology applications for pressure field measurements on the surface of aerospacecraft model ≪ BURAN ≫ are presented. Physical principles of LPS technology, an experimental technique and data re
Autor:
George Gutman, K D Joensen, Paul Gorenstein, Herbert W. Schnopper, Eric Louis, I. L. Rasmussen, H-J Voorma, Peter K. Frederiksen, H.-J. Wiebicke, Allan Hornstrup, Konstantin N. Borozdin, Marc Legros, Niels J. Westergaard, Ulrich Geppert, E. H. Silver, Ingolf Halm, James L. Wood, Finn Erland Christensen, N.B. Koster, Salim Abdali
Publikováno v:
Journal de Physique III. 4:1599-1612
Nanometer scale structures such as multilayers, gratings and natural crystals are playing an increasing role in spectroscopic applications for X-ray astrophysics. A few examples are briefly described as an introduction to current and planned applicat
Autor:
A. R. Jorden, V. C. Kempson, M. C. Townsend, M. N. Wilson, J. C. Schouten, R. J. Anderson, N. Crosland
Publikováno v:
Journal de Physique III. 4:1679-1686
The compact synchrotron X-ray source, HELIOS built by Oxford Instruments, was commissioned at IBM's Advanced Lithography Facility at Fishkill New York in 1991. Key features and specifications for HELIOS are described, emphasising the unique features
Publikováno v:
Journal de Physique III
Journal de Physique III, EDP Sciences, 1994, 4 (6), pp.1101-1119. ⟨10.1051/jp3:1994189⟩
Journal de Physique III, EDP Sciences, 1994, 4 (6), pp.1101-1119. ⟨10.1051/jp3:1994189⟩
Cet article propose une méthode nouvelle et originale pour la commande numérique temps réel d'un onduleur MLI sur charges non linéaires. Un asservissement de la valeur moyenne instantanée de la tension de sortie est réalisé par l'intermédiair
Publikováno v:
Journal de Physique III. 4:595-601
50-60 Hz electrical engineering represents a considerable potential market for superconductors. Fault current limitation will probably be the first among the possible applications, to find an industrial opening. Exploited features are very specific o
Publikováno v:
Journal de Physique III. 3:2121-2132
This paper describes an optimal design of a highly homogeneous resistive coil system for Magnetic Resonance Imaging (MRI). Magnetic material is used to improve field uniformity at the central region and to shield the magnet. The influence of magnetic