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  • Articles: DFG German National Licenses  (2)
Source
  • Articles: DFG German National Licenses  (2)
Material
Years
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of clinical periodontology 20 (1993), S. 0 
    ISSN: 1600-051X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract The influence on-removing efficiency of the alternating frequency of a powered brush has never been established. In the present study, a mechanical brush was tested at various alternations per minute (Fl = 2100, F2 = 500, F3 = 3500). A double-blind, randomized, triple crossover design was applied. After a plaque growth phase, the testbrushes were used under supervision for 90 s and the remaining plaque scored. A ridit analysis yielded significant differences between F2 and F1/F3. Odds ratios and frequency distributions demonstrated a clinically meaningful advantage for F2. Subjective evaluation by the participants confirmed the positive performance of F2. The results can be generalized in 3 ways: (1) the alternating frequency of a power brush influences its effectiveness. (2) high frequencies are not generally superior, (3) the test brush has its optimal cleaning efficiency at F2. which does not necessarily need to be true for other brands. It seems imperative to determine the optimal frequency for any new brush in a controlled study.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 117 (1974), S. 19-28 
    ISSN: 1432-1076
    Keywords: Transferrin metabolism ; Iron metabolism ; Infants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Mit der einfachen radialen Immundiffusion wurden Transferrinbestimmungen im Säuglingsalter durchgeführt. Gleichzeitig wurden Erythrocytenzahl, Hämoglobin, Färbekoeffizient (MCH) und Serumeisen bestimmt. Der Transferringehalt steigt in den ersten 4 Lebenswochen langsam, im 2. bis 4. Lebensmonat steil an. Dieser Verlauf entspricht der werdenden Funktion der Leber. Er ist unabhängig von der Serumeisenkonzentration und der Trimenon-reduktion. Serumeisen, Erythrocytenzahl, Hämoglobin und Färbekoeffizient hingegen zeigen einen der Trimenonreduktion entsprechend typischen Verlauf. Im 5. und 6. Monat steigt die Serumeisenkurve kurzfristig an, da eine gesteigerte Erythropoese Eisen aus den Speichern mobilisiert.
    Notes: Abstract In infants the kinetics of transferrin were studied by radial immuno-diffusion. In addition, serum iron, hemoglobin erythrocytes and mean corpuscular hemoglobin (MCH) were determined. Transferrin levels increased slowly during the first weeks of life while in the 2nd to 4th months there was a rapid rise. This corresponds to the functional maturation of the liver. There is no correlation between transferrin kinetics and serum iron level or trimenon reduction. Serum iron, erythrocytes, hemoglobin and MCH show a typical course in trimenon reduction. In the 5th and 6th months of life augmented levels of serum iron were found for a short time, because enhanced erythropoesis mobilizes iron from stores.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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