Record Display for the EPA National Library Catalog


Main Title Airflow Characteristics in a Baboon Nasal Passage Cast.
Author Patra, A. L. ; Gooya, A. ; Morgan, K. T. ;
CORP Author Northrop Services, Inc., Research Triangle Park, NC.;Health Effects Research Lab., Research Triangle Park, NC.
Publisher c1986
Year Published 1986
Report Number EPA-68-02-4032; EPA/600/J-86/547;
Stock Number PB91-109132
Additional Subjects Airflow ; Anatomy ; Casting ; Velocity ; Reprints ; Nasopharynx ; Air pollution effects(Animals) ; Papio ; Nasal mucosa
Library Call Number Additional Info Location Last
NTIS  PB91-109132 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
Airflow patterns in the nasal passages influence the distribution of air-pollutant-induced lesions in the airway mucosa. Little is known about airflow characteristics of the complex nasopharyngeal airway of man and experimental animals. Airflow characteristics in the nasopharyngeal airways of an adult male baboon (13.9 kg) were investigated with thermistor probes and the findings compared with flow visualization, using a cine-photographic technique. A clear, acrylic, hollow cast of a baboon nose was made, and thermistor probes were inserted to record air velocity in the cast lumen using a wind tunnel to propel air through the cast. An identical cast was studied by passing water through the cast and using pulses of blue dye to reveal flow patterns, and then velocities and flow patterns were determined from cine film with an analytical projector. Flow rates showed good correlations between the two methods, whereas cine-photography revealed areas of turbulence and vortex-like flow. These results suggest that water flow may provide useful information in complex airways where airflow cannot be determined.