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NCJRS Abstract

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NCJ Number: 228180 Find in a Library
Title: Use of Small Bloodstains in Blood Source Area of Origin Determinations
Journal: Canadian Society of Forensic Science Journal  Volume:42  Issue:2  Dated:June 2009  Pages:133-146
Author(s): M.E. Reynolds; M.A. Raymond; I. Dadour
Date Published: June 2009
Page Count: 14
Type: Report (Study/Research)
Format: Article
Language: English
Country: Canada
Annotation: This study examined small bloodstains resulting from impact spatter to compare experimental angle of impact calculation trends with angle of impact calculation theory.
Abstract: The study found that an apparent power law relationship may exist between the size of a parent blood droplet and the role of viscous and surface tension forces on subsequent bloodstain formation, particularly on those bloodstains caused by small droplets impacting obliquely with planar surfaces. Data were collected and measured using computer generated measuring systems, and compared to identical tests on larger droplets. This two part study examined small bloodstains using angle calculation theory using vertical droplets on inclined surfaces in part one, and experimentally generated impact spattered droplets in part two. The study concludes that until further research is conducted, caution should be exercised on the use of small droplets for blood source area of origin determinations. Tables, figures, and references
Main Term(s): Blood/body fluid analysis; Evidence collection
Index Term(s): Evaluation techniques; Evidence technicians; Investigative techniques; Scientific techniques; Technical evolution; Technical experts
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