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Author: john gillen

Displaying records 11 to 20 of 86 records.
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11. The Development of an Aerodynamic Shoe Sampling System
Published: 11/15/2011
Authors: Matthew E Staymates, Jessica M Grandner, John G Gillen, Stefan Lukow
Abstract: In collaboration with the Transportation Security Laboratory, the National Institute of Standards and Technology has been developing a prototype shoe sampling system that relies on aerodynamic sampling for liberating, transporting, and collecting exp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908809

12. Fabrication of Adhesive Collection swabs for Improved Swipe-Based Particle Collection Efficiency
Published: 9/2/2011
Authors: Jessica L Staymates, Jessica M Grandner, John G Gillen
Abstract: A technique was developed to improve the particle collection efficiency of commercially-available collection swabs. Improving the particle collection efficiency can provide a better chance of detection when screening for trace explosives particles. A ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907744

13. Application of Inkjet Printing Technology to Produce Test Materials of 1,3,5-Trinitro-1,3,5 Triazcyclohexane for Trace Explosive Analysis
Published: 10/15/2010
Authors: Eric S Windsor, Marcela Najarro Najarro, Anna N. Bloom, Bruce A Benner Jr, Robert A Fletcher, John G Gillen, Richard Lareau, Inho Cho, Mike Boldmand
Abstract: The feasibility of using piezoelectric drop-on-demand inkjet printing to prepare test materials for trace explosive analysis is demonstrated. Both pure high explosives and plastic-bonded putty explosives were formulated into inkjet printable solut ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902979

14. Production and Characterization of Polymer Microspheres Containing Trace Explosives Using Precision Particle Fabrication Technology
Report Number: 902104
Published: 8/2/2010
Authors: Matthew E Staymates, Robert A Fletcher, Jessica L Staymates, John G Gillen, Cory Berkland
Abstract: Well characterized test materials are essential for validating the performance of current trace explosive detection systems. These test materials must replicate trace explosive contamination in the form of small particles with characteristic diameter ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902104

15. Flow Visualization Techniques for the Evaluation of Non-Contact Trace Contraband Detectors
Published: 8/1/2010
Authors: Matthew E Staymates, Wayne Smith, John G Gillen, Richard T. Lareau, Robert A Fletcher
Abstract: Efforts are underway in the Surface and Microanalysis Science Division at the National Institute of Standards and Technology to study trace aerodynamic sampling of explosive particles using walk-through portal-based detection systems. Explosive trace ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832331

16. The Use of Gelatin-Based Samples for Verification of Trace Contraband Vapor Detectors
Published: 7/25/2010
Authors: Jessica L Staymates, John G Gillen
Abstract: This work describes a method to produce inexpensive and field deployable samples that can be used to verify the working condition of trace contraband vapor detectors such as ion mobility spectrometers (IMS). With such instruments, including chemical ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903461

17. The Internal Fluid Mechanics of Explosive Trace Detectors using Computational Fluid Dynamics
Series: OTHER
Published: 5/1/2009
Authors: Matthew E Staymates, Wayne Smith, John G Gillen
Abstract: Efforts are underway in the Surface and Microanalysis Science Division at the National Institute of Standards and Technology to study the vapor transport mechanisms inside explosive trace detection instruments (ETD s) and produce standard test materi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901483

18. Measurements of Air Jet Removal Efficiencies of Spherical Particles from Cloth and Planar Surfaces
Published: 12/1/2008
Authors: Robert A Fletcher, Nathanael Briggs, Erin Ferguson, John G Gillen
Abstract: Experiments were conducted to determine particle removal efficiencies from surfaces due to air jet impingement. We utilize monodisperse fluorescent polymer spheres ranging from 1 μm to 45 μm diameter distributed on polycarbonate surfaces ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902093

19. Method to Determine Collection Efficiency of Particles by Swipe Sampling
Published: 9/1/2008
Authors: Jennifer R Verkouteren, Jessica L Staymates, Robert A Fletcher, Wayne Smith, George A Klouda, John G Gillen
Abstract: A methodology was developed to evaluate particle collection efficiencies from swipe sampling of trace residues. Swipe sampling is used for many applications where trace residues must be collected, including the evaluation of radioactive particle con ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831421

20. Measurements of Air Jet Induced Release Rates of Spherical Particles from Cloth and Planar Surfaces
Published: 8/11/2008
Authors: Robert A Fletcher, Erin Ferguson, Nathanael Briggs, John G Gillen
Abstract: Experiments were conducted to determine particle release rates from surfaces due to air jet impingement. We utilize monodisperse fluorescent polymer spheres ranging from 1m to 45m diameter distributed on polycarbonate surfaces and muslin cloth. Parti ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832346



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