R. Reifenrath

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A bubble method was used to record dynamic area/surface tension diagrams of mixed lecithin-cholesterol films prepared at different weight ratios. The lecithin/cholesterol weight ratios were: 1:2, 1:1, 4:1, 6:1, 8:1 and 12:1. The minimum surface tension is about 20 dyn/cm for all weight ratios at amplitudes of 75, 25, 12.5, 6 and 3% area oscillation. The(More)
It is customary to describe alveolar respiratory mechanics in terms of a bubble-shaped model alveolus, using the Laplace equation. The coexistence of alveoli of different radii cannot be satisfactorily explained by this model, even if hypotheses as yet unconfirmed by experiment are taken into account. Moreover, this model requires the assumption of(More)
What is the nature of the hyperplastic cells you illustrated in bronchioles of long-surviving animals? Dr. Loosli: They are metaplastic epithelial cells derived from regenerating bronchial membranes. Dr. Murray: How do you explain the patchy nature of your lesions? Human influenza pneumonia is usually a diffuse process. Dr. Loosli: With the aerosol(More)
The biochemicaI properties of lung alveolar surfactant (LAS) proteins as well as their functional significance are unknown. The purpose of this study was to determine if these proteins contain carbohydrates and if they are capable of forming a surface film with surface-tension (ST) properties characteristic of LAS films [1]. The LAS proteins were removed(More)
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