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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of orthopaedic surgery & traumatology 3 (1993), S. 45-48 
    ISSN: 1432-1068
    Keywords: Osteomyelitis ; Femur ; Arthritis ; Knee ; Ostéomyélitis aigue ; Fémur ; Arthrite ; Genou
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Nous rapportons un cas d'ostéomyélite de l'extrémité inférieure du fémur chez l'adulte associée à une arthrite du genou de début suraigu; la bactériologie a été négative, et après une amélioration clinique sous antibiothérapie visant les bacilles Gram négatifs, l'apparition d'un volumineux séquestre a amené à une intervention au 12ème mois. Nous discutons cette association d'ostéomyélite et d'arthrite, classique chez le nourrisson et le nouveau-né, mais dont les publications sont très peu fréquentes en ce qui concerne l'adulte. Nous discutons la physiopathogénie de l'atteinte articulaire. Cette observation malheureusement garde une partie de son mystère du fait de l'absence de preuve bactériologique.
    Notes: Abstract We report a case of acute haematogenous osteomyelitis of the lower part of the femur in a 44 years old woman, associated to an infectious arthritis of the knee. These observations are rather rare in adults. Few cases of similar association have been published. Our observation is particuliar for two reasons: 1) the knee infection occurred some days after the bone infection, not in the same time. 2) The pus culture have remained negative. We think that this case is to begin the discussion about the physiopathogeny of the joint contamination. We think that the joint have been contaminated by proximity of an infected necrotic bone, more than an haematogenous way. Such a dramatic evolution for the bone infection and the negativity of the cultures are to be related with the possibility of anaerobic germs.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1588-2837
    Keywords: de-NOx ; HC-SCR ; noble metal ; ZSM-5
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Selective catalytic reduction of NO by propene has been investigated over noble metal (Pt, Pd, Rh)-based ZSM-5 catalysts. These samples were tested in a gas mixture system in the presence of excess oxygen, simulating lean-burn exhaust gases. The sequence in activity for NO reduction was Pt 〉 Rh ∼ Pd. Regarding the selectivity of the reaction to N2, an opposite trend was observed: Rh 〉 Pd ∼ Pt. The catalytic systems have presented stable operation under isothermal conditions during time-on-stream experiments.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1588-2837
    Keywords: de-NOx ; HC-SCR ; transition metals ; propene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Several catalysts based on transition metals (Cu, Co, Fe) and different supports (ZSM-5, activated carbon, Al2O3) have been tested by Temperature-Programmed Reaction (TPR) experiments for the selective catalytic reduction of NOx with propene in the presence of excess oxygen, simulating lean-burn conditions. The activity order with respect to the metal was Cu∼Fe〉Co for all supports used. ZSM-5 catalysts have a superior behavior over Al2O3, as observed for noble metal catalysts. Application of activated carbon as a support is not practical due to its consumption at the reaction temperatures. The selectivity to N2 of the catalysts was also independent of the support, being higher than 95% in all the cases.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 71 (2000), S. 33-40 
    ISSN: 1588-2837
    Keywords: Pt-USY ; de-NOx ; HC-SCR ; propene ; stability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Selective catalytic reduction of NOx by propene has been investigated on Pt-USY and compared to other Pt-catalysts. The catalyst was characterized by XRD, Ar adsorption at 87 K, TEM, and CO chemisorption, and tested in a gas mixture system in excess oxygen. Pt-USY shows an excellent activity in the reaction, with a molar NOx conversion of 90% at 475 K. Stability during time-on-stream and resistance to SO2 and H2O in the feed stream has also been investigated. Pt-USY performs better under lean-burn conditions than other Pt-catalysts on ZSM-5, Al2O3, or SiO2. The selectivity to N2 was similar for all the catalysts (∼30%), the other major product being N2O.
    Type of Medium: Electronic Resource
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