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  • 1990-1994  (4)
  • 1991  (1)
  • 1990  (3)
Materialart
Erscheinungszeitraum
  • 1990-1994  (4)
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Urological research 18 (1990), S. 219-222 
    ISSN: 1434-0879
    Schlagwort(e): Inhibitors ; Calcium-oxalate monohydrate growth ; Pyrophosphate ; Citrate ; Urine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary In order to have a rapid method of measuring the inhibition of calcium-oxalate monohydrate growth in freshly voided whole urine, a test system by Meyer and Smith that has originally been developed for diluted urine was modified. The crystallization processes were monitored by an ion-selective calcium electrode, which allowed determination of the half-life value of the decrease in calcium within 25 min. Even given the high inhibitory activity of whole urine, the test gave reliable results when a high seed concentration was used. Inhibition was expressed as the ratio between the half-lives of the calcium decrease obtained in the presence and in the absence of inhibitors. This approach allowed kinetic studies of individual inhibitors in model solutions. Furthermore, the measurements of inhibitors in urine could be, performed before the chemical composition was determined.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Urological research 18 (1990), S. S37 
    ISSN: 1434-0879
    Schlagwort(e): Calcium urolithiasis ; Diet ; Medical treatment
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The most important measure in the prophylaxis of idiopathic calcium urolithiasis is dietary advice. Patients should be kept to a high-fluid intake, increasing their diuresis by at least 0.51. The mineral content of drinking water seems to be of minor importance, but the liquid should be low in carbohydrates and oxalate. The intake of animal proteins should be reduced to no more than five meals with meat, fish or poultry per week. Excesses of oxalate-rich food must be avoided. The daily intake of calcium in dairy products should be in the range of 800–1200 mg. Sodium and refined carbohydrates should be moderately restricted. Medical treatment is indicated only in cases of recurrence under the appropriate diet. Selective treatment according to urinary chemical composition is favoured; alkali citrate, thiazides, allopurinol, and pyridoxine are of major interest.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1434-601X
    Schlagwort(e): 23.60+e ; 27.90+b
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The neutron-deficient isotopes226Np and227Np were produced in the bombardment of a 380μg/cm2 209Bi target with22Ne projectiles at an incident beam energy of 5.5 MeV/u. They were identified using the α-α time-correlation method /1/.226Np was found to decay with Eα=(8044±20) keV andT 1/2=(31±8) ms. For227Np two α-lines were observed at (7650±20) keV and (7677±20) keV with a half-life of (510±60) ms. The gas-filled separator NASE installed at GSI Darmstadt was used to separate the evaporation residues inflight.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1434-601X
    Schlagwort(e): 25.70.Jj ; 25.70.Gh ; 27.90.+b
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The fusion of the massive systems110Pd+104Ru and110Pd+110Pd was uniquely identified by observing the a decay of the evaporation residues. The observed distribution of the fusion cross section on the different evaporation-residue channels is in clear contradiction to calculations based on the compound-nucleus model. As a possible explanation the precompound evaporation of a particles is proposed.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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