Within the finite-temperature Greens-function formalism we study the equation of state of a hot interacting pion gas at zero chemical potential. Employing realistic ππ meson-exchange interactions we selfconsistently calculate the in-medium single-pion selfenergy and the ππ scattering amplitude in the quasiparticle approximation. These quantities are then used to evaluate the thermodynamic poten...

A programme of increased physical activity and self treatment based on the forced expiration technique was introduced to 14 adolescent patients with cystic fibrosis, diagnosed since infancy or early childhood, who had gastrointestinal and pulmonary symptoms. Twelve patients who fulfilled the one year programme had unchanged clinical conditions, pulmonary function tests, and chest x ray films. T...

Hypercapnia is frequently used to accelerate emergence from anesthesia in the OR, but not in the post anesthesia care unit (PACU). To this end, a reemergence device has been proposed that will take advantage of hypercapnia to reduce recovery time and number of adverse clinical events experienced in the PACU. In order to design a device capable of meeting the wide range of breathing patterns exh...

Amacroscopic two-fluid model of compressible particle-laden gas flows is considered. The governing equations are discretized by a high-resolution finite element method based on algebraic flux correction. A multidimensional limiter of TVD type is employed to constrain the local characteristic variables for the continuous gas phase and conservative fluxes for a suspension of solid particles. Spec...

• In studies of gas exchange between the lung and the pulmonary circulation it is generally assumed that the principal exchange takes place at the level of the pulmonary capillaries. The work presented here shows that some gaseous exchange can occur as well between the lung and vessels of macroscopic size. Hydrogen gas when administered to a subject by inhalation can be detected in the pulmonar...