Deposition Analysis of Unattached Radon Decay Products In Human Respiratory Tract
| dc.contributor.advisor | Tesfaye, Tilahun (PhD) | |
| dc.contributor.author | Seid, Abdu | |
| dc.date.accessioned | 2019-11-20T08:44:43Z | |
| dc.date.accessioned | 2023-11-09T11:26:00Z | |
| dc.date.available | 2019-11-20T08:44:43Z | |
| dc.date.available | 2023-11-09T11:26:00Z | |
| dc.date.issued | 2018-07-03 | |
| dc.description.abstract | Radon is a natural radioactive gas derived from geological materials. The greatest fraction of the natural radiation exposure in human results from inhalation of the short-lived decay products of radon (222Rn), which occur in the free atmosphere and in higher concentrations in the room air of buildings. Inhalation of unattached radon progeny has been implicated in potential health risks of ambient and indoor environments. These particles deposit in the respiratory tract mainly by diffusion. In this paper, the deposition pattern of unattached radon decay products in the human respiratory tract of adults Caucasian male based on ICRP66 algebraic formulas is reviewed. The percentage of deposition fractions for unattached radon progeny in respiratory tract were estimated for best estimation of aerosol parameters, with range of 49.03%–16.70% , 48.29%–19.00%, 2.25%–7.17%, 0.38%–32.04% and 0.04%–23.40% for nose, mouth, bronchial, bronchiolar and alveolar region, respectively | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/20150 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Deposition Analysis | en_US |
| dc.subject | Unattached Radon | en_US |
| dc.subject | Decay Products | en_US |
| dc.subject | Human | en_US |
| dc.subject | Respiratory | en_US |
| dc.subject | Tract | en_US |
| dc.title | Deposition Analysis of Unattached Radon Decay Products In Human Respiratory Tract | en_US |
| dc.type | Thesis | en_US |