Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 38: 955-960, 1975;
8750-7587/75 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Hoffman, R. A.
Right arrow Articles by Billingham, J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hoffman, R. A.
Right arrow Articles by Billingham, J.

Journal of Applied Physiology, Vol 38, Issue 6 955-960, Copyright © 1975 by American Physiological Society

ARTICLES

Effect of altered G levels on deposition of particulates in the human respiratory tract

R. A. Hoffman and J. Billingham

The primary mode of depositon of particles in the respiratory tract in the size range 0.5-10 mum diam (unit density) is sedimentation. The rate of sedimentation is directly proportional to the velocity of settling of the particle. Therefore, the total deposition of particles in the respiratory tract as well as the region of deposition is affected by changes in gravity. Human subjects were exposed to aerosols of 2.02-mum-diam polyvinyltoluene particles at 0, 0.5, 1.0, and 2.0 G. Total deposition was measured at each G level. Results indicate an almost linear increase in total deposition with increasing G levels over the range studied. The deposition measured at 1 G was less than reported in earlier experiments and the deposition at levels less than 1 G was less than had been calculated by Muir and Beeckmans. These data show that although sedimentation plays the major role in depostion of 2.02 mum particles, it is less than previously described.


This article has been cited by other articles:


Home page
 J. Appl. Physiol.Home page
G. K. Prisk
Physiology of a Microgravity Environment: Invited Review: Microgravity and the lung
J Appl Physiol, July 1, 2000; 89(1): 385 - 396.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
C. Darquenne, J. B. West, and G. K. Prisk
Deposition and dispersion of 1-µm aerosol boluses in the human lung: effect of micro- and hypergravity
J Appl Physiol, October 1, 1998; 85(4): 1252 - 1259.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
C. Darquenne, M. Paiva, J. B. West, and G. K. Prisk
Effect of microgravity and hypergravity on deposition of 0.5- to 3-µm-diameter aerosol in the human lung
J Appl Physiol, December 1, 1997; 83(6): 2029 - 2036.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online