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  • 2000-2004  (2)
  • CH4  (1)
  • Nephrotic syndrome  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Simultaneous removal of N2O and CH4 as the strong greenhouse‐effect gases over Fe‐BEA zeolite in the presence of excess O2 (2000)
    Springer
    Catalysis letters 69 (2000), S. 169-173 
    Details
    ISSN: 1572-879X
    Keywords: SCR of N2O ; CH4 ; greenhouse‐effect gas ; simultaneous removal ; Fe‐BEA zeolite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Simultaneous catalytic removal of N2O and CH4 as the strong greenhouse‐effect gases was found to be possible over an Fe‐ion‐exchanged BEA zeolite (Fe‐BEA) by the selective catalytic reduction (SCR) of N2O with CH4. The direct decomposition of N2O (2N2O → 2N2 + O2) and the oxidation of CH4 (CH4 + 2O2 → CO2 + 2H2O) over Fe‐BEA zeolite required high temperature above 400 and 450 °C, respectively. Nevertheless, the catalytic reduction of N2O by adding CH4 over Fe‐BEA zeolite readily occurred at much lower temperatures (ca. 250–350 °C) whether in the presence of O2 or not. No oxidation of CH4 by O2 took place at these temperatures. On the basis of these results and the kinetic studies, it was concluded that CH4 reacted selectively with N2O to produce N2, CO2 and H2O over Fe‐BEA zeolite even in the presence of excess O2. Overall stoichiometry of the SCR of N2O with CH4 was determined as follows: 4N2O + CH4 → 4N2 + CO2 + 2H2O.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019054930595
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  • 2
    Electronic Resource
    Electronic Resource
    Skeletal effects of low-dose cyclosporin A therapy in children with nephrotic syndrome (2000)
    Springer
    Clinical and experimental nephrology 4 (2000), S. 313-317 
    Details
    ISSN: 1437-7799
    Keywords: Key words Bone mineral density ; Cyclosporin A ; Glucocorticoid ; Nephrotic syndrome ; Osteopenia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background. High doses of cyclosporin A (CsA) produce high-turnover osteopenia in rats. The aim of this study was to determine whether low-dose CsA affects the skeleton in children with nephrotic syndrome. Methods. Biochemical parameters of mineral and skeletal homeostasis, and bone mineral density (BMD) in eight boys with steroid-dependent, frequently relapsing minimal change nephrotic syndrome who had received low-dose CsA (between 1.6 and 3.1 mg/kg per day) for 2 years were compared with measurements in the same patients before CsA therapy and who had received glucocorticoids for long periods, and with measurements in age-matched controls. Results. It was possible to discontinue glucocorticoid therapy within 4 months after the start of CsA therapy. There was a significant increase in the mean serum alka-line phosphatase concentration in CsA therapy patients compared with the same patients before CsA therapy and the controls. Serum osteocalcin and tartrate-resistant acid phosphatase, and urinary deoxypyridinoline concentrations in CsA therapy patients did not differ from those in the controls. BMD in CsA therapy patients was increased significantly compared with values in the same patients before CsA therapy. BMD in CsA therapy patients was lower than that in the controls, but remained within 80% of the overall mean BMD value. Conclusions. Two years of low-dose CsA therapy without glucocorticoids does not appear to induce high-turnover osteopenia in children with steroid-dependent nephrotic syndrome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101570070007
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    Paper (German National Licenses)
    Fulltext
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