English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Mathematical derivations were discussed to predict expiratory efficiencies of individual autopsied lungs, normal and emphysematous, on anatomical basis. The following conditions were used in the derivation. 1) The contractile force of the lung is generated by the stress of a linear elastic system of randomized orientation. The stress function is of the form of F=eax-1, in which F is the stress; x, the strain; and a, elasticity constant. 2) Geometrically similar configuration of the elastic system is approximately sustained irrespective of pulmonary expansion. 3) In the course of expiration intrapulmonary pressure is always equalized over the whole lung on account of intrapulmonary air flow. 4) The distribution of the density of the elastic system can be approximated to a combination of a small number n of different normal distributions. The results could be summarized as:

Derivation of Expiratory Mechanics of Normal and Emphysematous Lungs on Anatomical Basis