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  • 1
    Electronic Resource
    Electronic Resource
    Notre expérience de l'ostéomyélite hématogène du rachis Revue de 160 cas (1993)
    Springer
    European journal of orthopaedic surgery & traumatology 3 (1993), S. 19-25 
    Details
    ISSN: 1432-1068
    Keywords: Osteomyelitis ; Spine ; Antibiotherapy ; Ostéomyélite ; Rachis ; Antibiothérapie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'ostéomyélite vertébrale d'origine hématogène a été observée chez 160 malades (1960–1990). L'âge moyen d'apparition des premiers symptômes était de 48 ans. L'origine fut prouvée par prélèvements locaux, hémocultures, résultats histologiques, ou dans d'autres sièges simultanés d'infection. Le traitement a consisté essentiellement en antibiothérapie. La chirurgie fut utilisée pour établir le diagnostic, ou pour évacuation d'abcès. Les complications neurologiques, 29 cas furent traitées par chirurgie et antibiotiques; 21 ont eu une récupération complète ou subtotale, mais dans 7 cas les signes neurologiques ont persisté. Les auteurs ont observé que l'antibiothérapie mise en œuvre rapidement évite les destructions osseuses et les complications neurologiques. Un diagnostic exact (entre les infections à pyogènes et les tumeurs, la tuberculose, l'arthrose⋯) nécessite tomographies, scanner, IRM, ponctions, aspirations, ou biopsies.
    Notes: Abstract Hematogenous osteomyelitis of the spine was diagnosed in 160 patients (1960–1990). The average age of the appearance of the first symptoms was 48 years. Pathogens were identified from local sample taking, hemocultures, histological proof, or other infections seats. Access way is in 82 cases known. Treated consisted of antibiotics. Surgery was performed to establish the diagnosis or to evacuate an abcess. Neurological complications, 29 cases, were treated with surgery and antibiotherapy; 21 had complete or subtotal resolution of their symptoms; but neurological symptoms persisted in 7. Primary antibiotherapy should be started promptly to avoid bone destructions or neurological complications. A correct diagnosis (differenciation between pyogenic infection, tumors, tuberculosis, arthrosis⋯) necessits tomographies, scanner, magnetic resonance imaging, punctures, aspiration, or open biopsy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01798159
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of the H− thermal energy in a volume ion source plasma (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 1212-1219 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The H− negative ion thermal energy measured using the two-laser-pulse photodetachment technique is reported to be in the range from 0.1 to 0.7 eV for various conditions of volume ion source operation (pressure−from 2 to 7 mTorr, discharge current−from 1.5 to 20 A). The hydrogen pressure has a significant effect in lowering the negative ion temperature, while the increase of the discharge current leads to a rise in T−. It is found that T− is a fraction of the electron temperature, Te. This fraction is strongly dependent on the gas pressure. T− scales linearly with the electron temperature and exceeds the highest values predicted by the theory of dissociative attachment. The possible mechanisms for H− ion heating are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349575
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  • 3
    Electronic Resource
    Electronic Resource
    H− and D− temperature in volume sources : Proceeding of the fourth International Conference on Ion Sources (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2686-2688 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new technique using laser induced photodetachment has been developed for measuring the negative ion temperature in H− and D− sources. Using this technique, we have investigated the dependence of the negative ion temperature on source parameters such as pressure, discharge current, and electron temperature. Simultaneous measurements of negative ion density, temperature, and extracted current lead to the conclusion that the extracted negative ion current is, at most, equal to the thermal flux.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142823
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  • 4
    Electronic Resource
    Electronic Resource
    Lagrangian approaches for particle collisions: The colliding particle velocity correlation in the multiple particles tracking method and in the stochastic approach (2001)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 13 (2001), S. 2946-2956 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Two different Lagrangian approaches for particle/particle collisions are described. The first model is based on the simultaneous tracking of several particles and suitable treatment is developed on particle pairs to detect collisions on each time step of the particle trajectory realization. The second method is based on a stochastic approach where one single particle is tracked, and successive random processes are applied to generate a fictitious partner of collision. In order to validate both approaches, simulations have been carried out in homogeneous isotropic turbulence and they have been compared with LES data. The particle/particle correlated motion through the surrounding fluid is proved to be a key parameter in a particle/particle collision process. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1396845
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  • 5
    Electronic Resource
    Electronic Resource
    Negative ion volume production model: State of the experimental confirmation (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 2721-2728 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We report the results of simulating two multicusp volume negative ion sources in which plasma parameters, hydrogen vibrational spectra, and in one case the negative ion density, have been measured. We find generally good quantitative and qualitative agreement between experiment and theory for the basic discharge parameters. Good agreement is also found for atomic density, although the wall recombination coefficient γ(H) is 0.05 in one source and 0.5 in the other. The calculated densities of vibrationally excited states with v‘≥5 are higher than the measured densities, but the calculated negative ion densities are lower than available measurements. Possible causes for these discrepancies are suggested. Fundamental modifications to the model may be necessary, and we have discussed two possibilities: a suprathermal rotational spectrum, and a spatial gradient in vibrational excitation (due to elastic collisions which can localize the effect of vibrational wall cooling near the wall).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1144410
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  • 6
    Electronic Resource
    Electronic Resource
    Photodetachment technique for measuring H− velocities in a hydrogen plasma (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 2873-2878 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This article reports work in progress on laser diagnostics of negative-ion transport velocity in H−-ion volume sources. The plasma dynamics after the laser shot is discussed in detail, and the effect of the potential perturbation on the H− velocities is evaluated. A method of evaluation of the H− transport velocity from single-laser-beam photodetachment experiments is proposed. To substantiate this method, two-laser-beam photodetachment experiments have been effected. The velocities thus determined are pressure dependent; they correspond to H− energies in the range 0.23–0.08 eV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140620
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  • 7
    Electronic Resource
    Electronic Resource
    Dispersion of discrete particles by continuous turbulent motions: New results and discussions (1986)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 29 (1986), S. 2147-2151 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A number of results for the Tchen theory of dispersion of discrete particles by continuous turbulent motion are recalled. A Frenkiel family of Lagrangian correlation functions is used and the main results are rewritten in nondimensional form. The theory is completed by a new relation expressing the mean square of the relative particle velocity. The validity of the Stokes contribution to the Tchen equation of motion is examined. Numerical results are given and discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865602
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  • 8
    Electronic Resource
    Electronic Resource
    Theoretical non-equilibrium electron energy and vibrational distributions of H"2 in magnetic multicusp plasmas: an analysis of the input cross-section data
    Amsterdam : Elsevier
    Chemical Physics Letters 179 (1991), S. 48-52 
    Details
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-2614(91)90289-L
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  • 9
    Electronic Resource
    Electronic Resource
    Modeling surface effects in negative-ion volume sources
    Amsterdam : Elsevier
    Chemical Physics Letters 183 (1991), S. 397-402 
    Details
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-2614(91)90401-T
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  • 10
    Electronic Resource
    Electronic Resource
    STUDY OF WATER VAPOR THERMOLYSIS IN A CYLINDRICAL REACTOR (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 404 (1983), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1983.tb19515.x
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