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Author: robert fletcher

Displaying records 21 to 30 of 41 records.
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21. Polycyclic Aromatic Hydrocarbons in Flames, in Diesel Fuels, and in Diesel Emissions
Published: 1/1/2005
Authors: Robert A Fletcher, R Dobbins, Bruce A Benner Jr, S Hoeft
Abstract: Diesel fuels and emissions are composed of numerous hydrocarbon species. Combustion generated or pyrogenic polycyclic aromatic hydrocarbons (PAHs) derived from premixed and diffusion flames often consists of the most stable benzenoid PAHs. In contra ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831342

22. Automated Analysis of Organic Particles Using Cluster SIMS
Published: 6/1/2004
Authors: John G Gillen, Cynthia J Zeissler, Christine M. Mahoney, Abigail P. Lindstrom, Robert A Fletcher, P Chi, Jennifer R Verkouteren, David S. Bright, R Lareau, M Boldman
Abstract: Cluster primary ion bombardment combined with secondary ion imaging is used in an ion microscope secondary ion mass spectrometer for the spatially resolved analysis of organic particles on various surfaces. Compared to the use of monoatomic primary ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831316

23. Soot Inception in a Well Stirred Reactor
Published: 3/19/2003
Authors: L G. Blevins, K A Jensen, R A Ristau, N Y Yang, C W Frayne, R C Striebich, M J DeWitt, S D Stouffer, E J Lee, Robert A Fletcher, J M Oran, Joseph M Conny, George William Mulholland
Abstract: Soot samples collected from a well stirred reactor operating with ethylene/air equivalence ratios of 1.9, 2.0, and 2.1 were examined to determine yield, size distribution, morphology, and composition. For F = 1.9, particles are absent. For F = 2.0 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861218

24. The Existence of Precursor Soot in the Exhaust of Inverse Diffusion Flames
Published: 10/1/2002
Authors: L G. Blevins, Robert A Fletcher, Bruce A Benner Jr, Eric B Steel, George William Mulholland
Abstract: Knowledge of the chemical and physical structure of precursor soot is useful in the development of soot particle inception models. This paper examines the hypothesis that soot exiting an inverse flame is similar in chemical and morphological structu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861125

25. The Existence of Young Soot in the Exhaust of Inverse Diffusion Flames
Published: 7/1/2002
Authors: L G Blevins, Robert A Fletcher, Bruce A Benner Jr, Eric B Steel, George William Mulholland
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903297

26. Chapter 12: Analysis of Individual Collected Particles
Published: 1/1/2001
Authors: Robert A Fletcher, John A Small, J H J Scott
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831472

27. Shape Factors of ISO 12103-A3 (Medium Test Dust)
Published: 11/1/2000
Authors: Robert A Fletcher, David S. Bright
Abstract: 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 fil ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831146

28. SRM 2806 (ISO Medium Test Dust in Hydraulic Oil): A Particle-Contamination Standard Reference Material for the Fluid Power Industry
Published: 8/1/1999
Authors: Robert A Fletcher, Jennifer R Verkouteren, Eric S Windsor, David S. Bright, Eric B Steel, John A Small, Walter S Liggett Jr
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831080

29. AMS and Microprobe Analysis of Combusted Particles in Ice and Snow
Published: 8/1/1998
Authors: S R. Biegalski, George A Klouda, R Weissenbok, Lloyd A. Currie, Robert A Fletcher
Abstract: 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. Rece ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831038

30. Heated Inlet Sampling System for Removing Carbonaceous Aersol
Published: 4/1/1998
Authors: Robert A Fletcher, John A Small, Douglas H. Blackburn
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901758



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