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Titolo:
The natural sampling of airborne trace signals from explosives concealed upon the human body
Autore:
Gowadia, HA; Settles, GS;
Indirizzi:
Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 n, University Pk, PA 16802 USA
Titolo Testata:
JOURNAL OF FORENSIC SCIENCES
fascicolo: 6, volume: 46, anno: 2001,
pagine: 1324 - 1331
SICI:
0022-1198(200111)46:6<1324:TNSOAT>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Keywords:
forensic science; explosive detection; natural sampling; RDX; TNT; human body; human thermal plume; aerobiology; heat transfer; flow visualization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Settles, GS Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 y Pk, PA 16802 USA
Citazione:
H.A. Gowadia e G.S. Settles, "The natural sampling of airborne trace signals from explosives concealed upon the human body", J FOREN SCI, 46(6), 2001, pp. 1324-1331

Abstract

An experimental study of the natural sampling of trace signals from explosives concealed upon the human body was performed by taking proper account of the thermal behavior of the air surrounding the human body and the particles therein. Experiments were conducted in a dispersal chamber to identify variables affecting the detectibility of concealed RDX and TNT patches. Movement by human volunteers was found to enhance the available explosive trace signal above a baseline level. Clothing blocked some of this movement-generated trace signal. The detected signal levels, were also found to vary significantly from volunteer to volunteer, indicating that human variability is an issue in explosive trace detection. Further, under the conditions studied here, the detectibility of RDX and TNT was dependent upon the efficient sampling of contaminated particulate matter, not the vapor phase. The present results are now being applied to the design of a Practical, nonintrusive; trace detection portal for aviation security screening and related applications.

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Documento generato il 29/03/20 alle ore 00:58:48