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Search Publications by: Robert A. Fletcher (Assoc)

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Displaying 76 - 98 of 98

Chapter 12: Analysis of Individual Collected Particles

January 1, 2001
Author(s)
Robert A. Fletcher, John A. Small, J H. Scott
This chapter describes microscopes and microprobes used for analysis of collected, individual particles. The instruments discussed are the light microscope, electron microscopes (scanning, environmental and transmission), electron microprobes, laser

Shape Factors of ISO 12103-A3 (Medium Test Dust)

November 1, 2000
Author(s)
Robert A. Fletcher, David S. Bright
A new derivative of Arizona sand, ISO Medium Test Dust, is coming into use as a liquid optical particle count calibrant. ISO Medium Test Dust and optical particle counters are used to test filtering efficiency. Particle shape plays a role in both filtering

SRM 2806 (ISO Medium Test Dust in Hydraulic Oil): A Particle-Contamination Standard Reference Material for the Fluid Power Industry

August 1, 1999
Author(s)
Robert A. Fletcher, Jennifer R. Verkouteren, Eric S. Windsor, David S. Bright, Eric B. Steel, John A. Small, Walter S. Liggett Jr
Standard Reference material (SRM) 2806 is composed of ISO medium test dust (ISO 12103-A3), a mineral dust, suspended in MIL-H-5606 hydraulic oil. SRM 2806 is a traceable particle count standard and is certified for number of particles larger than a

AMS and Microprobe Analysis of Combusted Particles in Ice and Snow

August 1, 1998
Author(s)
S R. Biegalski, George A. Klouda, R Weissenbok, Lloyd A. Currie, Robert A. Fletcher
Ice cores and snow pits of the cryosphere contain particles that detail the history of past atmospheric air compositions. Some of these particles result from combustion processes and have undergone long-range transport to arrive in the Arctic. Recent

Ultrafine Combustion Aerosol Generator

January 1, 1992
Author(s)
Thomas G. Cleary, George W. Mulholland, Lewis K. Ives, Robert A. Fletcher, J. W. Gentry
We are able to produce a narrowly distributed combustion aerosol with a mean particle size of about 10 nm by operating a laminar diffusion burner with acetylene fuel in the nominal "presooting" condition. Number concentrations of approximately 106

Analysis of Smoke Samples From Oil Well Fires in Kuwait. Report of Test (FR 3985)

June 20, 1991
Author(s)
George W. Mulholland, Bruce A. Benner Jr, Robert A. Fletcher, Eric B. Steel, Stephen A. Wise, Willie E. May, Daniel M. Madrzykowski, David J. Evans
This report describes results from a preliminary series of measurements concerning the smoke production from the Kuwait oil well fires. Detailed chemical analysis of the smoke is being carried out for determination of the fraction of ambient aerosol

Microchemical and Molecular Dating

March 1, 1989
Author(s)
Lloyd A. Currie, T. W. Stafford, A. E. Sheffield, George A. Klouda, Stephen A. Wise, Robert A. Fletcher, D. J. Donahue, A.J.T. Jull, T. W. Linick