Accepted 27 May 1992 Abstract The amount ofbudesonide suspension actually delivered to six subjects (aged 4-30 months) by a jet nebuliser and spacer system (System 22) was determined. Two nebulisations were performed in each subject using a filter at the exhalation outlet of the inhalation chamber. An inhalation filter was additionally attached between the facemask and the spacer in the first t...

Phonation is defined as a laryngeal motor behavior used for speech production, which involves a highly specialized coordination of laryngeal and respiratory neuromuscular control. During speech, brief periods of vocal fold vibration for vowels are interspersed by voiced and unvoiced consonants, glottal stops and glottal fricatives (/h/). It remains unknown whether laryngeal/respiratory coordina...

The aim of the present study is to measure activity concentrations 226Ra, 222Rn, mass exhalation rate and annual effective dose radon in marble samples collected from Al-Bayda city local market –Libya. Samples were measured by using a low-background NaI (Tl) detector. average 226Ra 222Rn 72.57 Bq.kg-1 597.85 Bq.m-3.The vary 0.05-0.30 Bq.kg-1.S-1 with an 0.13 Bq.kg-1.S-1. was calculated under in...

ABSTRACT  Background: The essential constituents of cements like lime, silica and alumina are derived from earth’s crust in which radioactive elements like uranium, thorium etc are also present in varying amounts almost everywhere. These two elements are considered as the parent elements of uranium and thorium radioactive decay series in which radon and thoron are produced respectively as decay...

Abstract. There is a need for validation framework long-range atmospheric transport modelling dedicated to radionuclides. For distances greater than 50 km, the of radionuclide deposition and ambient gamma dose rate evaluation are particularly difficult validate, since it has been mainly only observed after accidents Chernobyl Fukushima. however natural wet phenomenon leading numerous well-obser...

Lung ventilation in Siren lacertina was studied using X-ray video, measurements of body cavity pressure and electromyography of hypaxial muscles. S. lacertina utilizes a two-stroke buccal pump in which mixing of expired and inspired gas is minimized by partial expansion of the buccal cavity during exhalation and then full expansion after exhalation is complete. Mixing is further reduced by the ...

In the present paper we address the old question of respiratory planning in speech production. We recast the problem in terms of speakers' communicative goals and propose that speakers try to minimize respiratory effort in line with the H&H theory. We analyze respiratory cycles coinciding with no speech (i.e., silence), short verbal feedback expressions (SFE's) as well as longer vocalizations i...

We read with interest the manuscript of PIACENTINI et al. [1]. This paper shows that exhaled breath temperature plateau and exhaled nitric oxide (NO) are correlated in children with asthma. This finding is interesting considering that NO is a marker of inflammation and that exhaled breath temperature may also be used to assess inflammation in the airways in a noninvasive way. We previously show...