The underlying hypothesis of this study is that collateral ventilation by diffusion of occluded air spaces in the lungs of patients with chronic obstructive pulmonary disease (COPD) may play a substantial role in the pulmonary gas exchange of these patients. Using a related lung model we have simulated: a) the multiple-breath washout of helium (He) and sulphur hexafluoride (SF6) from the alveol...

Heptacene, generated in inert gas matrices by photobisdecarbonylation of a bridged alpha-diketone precursor, undergoes ionization into radical anion and radical cation upon UV irradiation.

I nert gas washout tests including single breath washout (SBW) and multiple breath washout (MBW) have been used for several decades across a wide age range spanning from early infancy to late adulthood. In the past, these lung function tests were typically applied in research settings, assessing lung volume and ventilation distribution in order to gain insight into presence, severity and progre...

Many studies employing various methods have been carried out into the number densities of excited atoms in electrical discharges with inert gases [1,2,3], but the ranges of the discharge current and gas pressure is very limited in them all. In this work, the population densities of 3S, 3s' of neon have been investigated using the atomic absorption method. Since the discharge current and gas...

Inert Gas System is a machine that functions as security system to prevent explosions on tankers. Explosion prevention carried out by introducing inert gas into the cargo tank with aim of reducing oxygen levels in atmosphere so formation flammable mixture. contains very little oxygen, namely 1-2% volume. The device produces called Generator (IGG). purpose this study was determine factors cause ...