Thesis (Ph. D.)--University of Oregon, 2006. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 172-186). Also available for download via the World Wide Web; free to University of Oregon users.

Thesis (Ph. D.)--University of Oregon, 2006. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 172-186). Also available for download via the World Wide Web; free to University of Oregon users.

Thesis (Ph. D.)--University of Oregon, 2006. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 172-186). Also available for download via the World Wide Web; free to University of Oregon users.

Thesis (M.S.) - - Oregon Graduate Center, 1981.

Thesis (Ph. D.)--Oregon Graduate Center, 1979.

This experiment is concerned with sampling submicrometer particles in near sonic and supersonic flows. The study employed a high volume condensation aerosol generator to produce stearic acid particles having a geometric mean diameter of 0.8 μm and a geometric standard deviation of 1.28. The aerosol was diluted with dry air and accelerated to Mach 0.6, 0.8, 1.26, or 1.47 through a flow nozzle. Aerosol mass concentrations were determined using a small bore probe in the jet and by a large bore probe sampling isokinetically upstream of the jet nozzle. The results of both samples were compared to compute the sampling error associated with the high speed jet sample. The mass of stearic acid collected on polycarbonate membrane filters was determined by gravimetric and chromatographic methods. Studies at Mach 0.8 with four sampling probes having inlet wall to bore area ratios ranging from 3.8 to 0.28 demonstrated that probe wall thickness effects are not significant when the sample is extracted isokinetically. Subisokinetic experiments using a knife edged probe showed relative errors of 124 ± 12% when sampling at 20% of the isokinetic condition. The subisokinetic results are compared favorably with the extended empirical results of other authors. For the supersonic cases it is shown that the subsonic velocity downstream of the sampling probe bow shock can be used in estimating the sampling error. / Graduation date: 1991

No description available.

Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references. Also available in electronic version. Access restricted to campus users.

Thesis (Ph. D.)--California Institute of Technology, 1988. UM #88-03,381. / Advisor names found in the Acknowledgments pages of the thesis. Title from home page. Viewed 02/19/2010. Includes bibliographical references.

No description available.