منابع مشابه
Pores of Kohn.
The history of the investigations into interalveolar communications (pores of Kohn) shows that the question whether they exist and, if so, their nature has for approximately a century been contentious. The present electron microscopic study of the lungs of mice demonstrates that alveolar pores are normal structures, with edges composed of intact alveolar wall. A number of planes are demonstrate...
متن کاملThe alveolar pores of Kohn in young postnatal rat lungs and their relation with type II pneumocytes.
In order to obtain more information on the development, morphology and function of the pores of Kohn, the lungs of Wistar rats are studied during their early postnatal period, up to 3 weeks of age, by scanning and transmission electron microscopy. The substantial development of the interalveolar pores on days 14 and 21 coincides with the period of septal rearrangement when secondary interalveol...
متن کاملMaor kohn
Ethnic and indegenous groups with spatial transient characteristic that live in modern countries can find themselves in a unique situation of an impounded space where on one hand they aspire to improve their condition and to integrate into the wide society, and on the other hand, they are debarred from this process due to various reasons. This situation compels them to live in substandard condi...
متن کاملKohn anomalies in superconductors.
I present the detailed behavior of phonon dispersion curves near momenta which span the electronic Fermi sea in a superconductor. I demonstrate that an anomaly, similar to the metallic Kohn anomaly, exists in a superconductor’s dispersion curves when the frequency of the phonon spanning the Fermi sea exceeds twice the superconducting energy gap. This anomaly occurs at approximately the same mom...
متن کاملKohn anomalies in graphene nanoribbons
The quantum corrections to the energies of the point optical phonon modes Kohn anomalies in graphene nanoribbons NRs are investigated. We show theoretically that the longitudinal optical LO modes undergo a Kohn anomaly effect, while the transverse optical TO modes do not. In relation to Raman spectroscopy, we show that the longitudinal optical modes are not Raman active near the zigzag edge, wh...
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ژورنال
عنوان ژورنال: Thorax
سال: 1972
ISSN: 0040-6376
DOI: 10.1136/thx.27.4.433