For a plane model of the exterior parts of the sun, the behavior of adiabatic waves with complex frequencies is investigated. The equilibrium configuration is a one-layer model with isentropic stratification at great depth and an asymptotically isothermal atmosphere. The wave equation reduces to Whittaker’s equation with complex parameters. By the assumption that only outgoing progressive waves...

The mechanical properties of the walls of blood vessels have an important influence on the flow of blood and passage of pulse waves along them. Though a certain amount of information is available concerning the mechanical properties of the aorta and its main branches (Burton, 1954), we have been unable to find any observations on the pulmonary circulation. Hence, in view of the increasing inter...

We describe a microfabricated airway system integrated with computerized air-liquid two-phase microfluidics that enables on-chip engineering of human airway epithelia and precise reproduction of physiologic or pathologic liquid plug flows found in the respiratory system. Using this device, we demonstrate cellular-level lung injury under flow conditions that cause symptoms characteristic of a wi...

[Article] Dynamics of spiral waves in a cardiac electromechanical model with a local electrical inhomogeneity Original Citation: Mesin L. (2012). Dynamics of spiral waves in a cardiac electromechanical model with a local electrical inhomogeneity. Porto, the institutional repository of the Politecnico di Torino, is provided by the University Library and the IT-Services. The aim is to enable open...

Cochlear implants are first true bionic sense organs Like human inner ear hair cells they convert mechanical sound energy into electrical impulses. Cochlear implants are not hearing aids which merely amplify mechanical sound waves and increase their energy content Otter et al have shown that in the normal auditory nerve in young people there are approximately 35,000 nerve fibres; they concluded...

In vivo measurement of the mechanical properties of thin-walled soft tissues (e.g., mitral valve, artery and bladder) and in situ mechanical characterization of thinwalled artificial soft biomaterials in service are of great challenge and difficult to address via commonly used testing methods. Here we investigate the properties of guided waves in immersed pre-stressed plates and tubes, and show...